So it begins...

patches/unapplied/server/0002-Remap-fixes.patch

@@ -0,0 +1,182 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Kyle Wood <kyle@denwav.dev>
+Date: Fri, 11 Jun 2021 05:25:03 -0500
+Subject: [PATCH] Remap fixes
+
+
+diff --git a/src/main/java/net/minecraft/core/BlockPos.java b/src/main/java/net/minecraft/core/BlockPos.java
+index ad3035da44c6af2fa7cc53926f33526a43740313..e89fa618fa20e3e843d8de81629e6dc551777823 100644
+--- a/src/main/java/net/minecraft/core/BlockPos.java
++++ b/src/main/java/net/minecraft/core/BlockPos.java
+@@ -278,9 +278,11 @@ public class BlockPos extends Vec3i {
+ 
+     public static Iterable<BlockPos> withinManhattan(BlockPos center, int rangeX, int rangeY, int rangeZ) {
+         int i = rangeX + rangeY + rangeZ;
+-        int j = center.getX();
+-        int k = center.getY();
+-        int l = center.getZ();
++        // Paper start - rename variables to fix conflict with anonymous class (remap fix)
++        int centerX = center.getX();
++        int centerY = center.getY();
++        int centerZ = center.getZ();
++        // Paper end
+         return () -> {
+             return new AbstractIterator<BlockPos>() {
+                 private final BlockPos.MutableBlockPos cursor = new BlockPos.MutableBlockPos();
+@@ -295,7 +297,7 @@ public class BlockPos extends Vec3i {
+                 protected BlockPos computeNext() {
+                     if (this.zMirror) {
+                         this.zMirror = false;
+-                        this.cursor.setZ(l - (this.cursor.getZ() - l));
++                        this.cursor.setZ(centerZ - (this.cursor.getZ() - centerZ)); // Paper - remap fix
+                         return this.cursor;
+                     } else {
+                         BlockPos blockPos;
+@@ -321,7 +323,7 @@ public class BlockPos extends Vec3i {
+                             int k = this.currentDepth - Math.abs(i) - Math.abs(j);
+                             if (k <= rangeZ) {
+                                 this.zMirror = k != 0;
+-                                blockPos = this.cursor.set(j + i, k + j, l + k);
++                                blockPos = this.cursor.set(centerX + i, centerY + j, centerZ + k); // Paper - remap fix
+                             }
+                         }
+ 
+diff --git a/src/main/java/net/minecraft/world/entity/ai/behavior/BehaviorUtils.java b/src/main/java/net/minecraft/world/entity/ai/behavior/BehaviorUtils.java
+index 3ba785845a63e46a44fc48264d08c96bfc34ab8b..92bd58010e8c89e361e28aec59447349edbbc028 100644
+--- a/src/main/java/net/minecraft/world/entity/ai/behavior/BehaviorUtils.java
++++ b/src/main/java/net/minecraft/world/entity/ai/behavior/BehaviorUtils.java
+@@ -173,11 +173,11 @@ public class BehaviorUtils {
+ 
+         return optional.map((uuid) -> {
+             return ((ServerLevel) entity.level()).getEntity(uuid);
+-        }).map((entity) -> {
++        }).map((entity1) -> { // Paper - remap fix
+             LivingEntity entityliving1;
+ 
+-            if (entity instanceof LivingEntity) {
+-                LivingEntity entityliving2 = (LivingEntity) entity;
++            if (entity1 instanceof LivingEntity) { // Paper - remap fix
++                LivingEntity entityliving2 = (LivingEntity) entity1; // Paper - remap fix
+ 
+                 entityliving1 = entityliving2;
+             } else {
+diff --git a/src/main/java/net/minecraft/world/item/crafting/RecipeManager.java b/src/main/java/net/minecraft/world/item/crafting/RecipeManager.java
+index b402543da876e6d14b263443b2d692f33eb08863..4d2d23ff118e9307d50ca2a5194b83450c91a752 100644
+--- a/src/main/java/net/minecraft/world/item/crafting/RecipeManager.java
++++ b/src/main/java/net/minecraft/world/item/crafting/RecipeManager.java
+@@ -192,7 +192,7 @@ public class RecipeManager extends SimpleJsonResourceReloadListener {
+         Builder<ResourceLocation, Recipe<?>> builder = ImmutableMap.builder();
+ 
+         recipes.forEach((irecipe) -> {
+-            Map<ResourceLocation, Recipe<?>> map1 = (Map) map.computeIfAbsent(irecipe.getType(), (recipes) -> {
++            Map<ResourceLocation, Recipe<?>> map1 = (Map) map.computeIfAbsent(irecipe.getType(), (recipes_) -> { // Paper - remap fix
+                 return new Object2ObjectLinkedOpenHashMap<>(); // CraftBukkit
+             });
+             ResourceLocation minecraftkey = irecipe.getId();
+diff --git a/src/test/java/org/bukkit/DyeColorsTest.java b/src/test/java/org/bukkit/DyeColorsTest.java
+index ad52c3fc6210939a39ef77a382c640a24ee44838..6b7dd01778f0a5d3a96d2d04af4b525d17efbfba 100644
+--- a/src/test/java/org/bukkit/DyeColorsTest.java
++++ b/src/test/java/org/bukkit/DyeColorsTest.java
+@@ -4,7 +4,6 @@ import static org.hamcrest.Matchers.*;
+ import static org.junit.Assert.*;
+ import java.util.ArrayList;
+ import java.util.List;
+-import net.minecraft.world.item.DyeColor;
+ import org.bukkit.support.AbstractTestingBase;
+ import org.junit.Test;
+ import org.junit.runner.RunWith;
+@@ -29,7 +28,7 @@ public class DyeColorsTest extends AbstractTestingBase {
+     @Test
+     public void checkColor() {
+         Color color = this.dye.getColor();
+-        float[] nmsColorArray = DyeColor.byId(this.dye.getWoolData()).getTextureDiffuseColors();
++        float[] nmsColorArray = net.minecraft.world.item.DyeColor.byId(this.dye.getWoolData()).getTextureDiffuseColors(); // Paper - remap fix
+         Color nmsColor = Color.fromRGB((int) (nmsColorArray[0] * 255), (int) (nmsColorArray[1] * 255), (int) (nmsColorArray[2] * 255));
+         assertThat(color, is(nmsColor));
+     }
+@@ -37,7 +36,7 @@ public class DyeColorsTest extends AbstractTestingBase {
+     @Test
+     public void checkFireworkColor() {
+         Color color = this.dye.getFireworkColor();
+-        int nmsColor = DyeColor.byId(this.dye.getWoolData()).getFireworkColor();
++        int nmsColor = net.minecraft.world.item.DyeColor.byId(this.dye.getWoolData()).getFireworkColor(); // Paper - remap fix
+         assertThat(color, is(Color.fromRGB(nmsColor)));
+     }
+ }
+diff --git a/src/test/java/org/bukkit/RegistryConstantsTest.java b/src/test/java/org/bukkit/RegistryConstantsTest.java
+index 34e6b84c63e50972c650c0e4bc17bc0749e1b7c3..cd96cbba4d495c18f984dec6f861f75baf4300cc 100644
+--- a/src/test/java/org/bukkit/RegistryConstantsTest.java
++++ b/src/test/java/org/bukkit/RegistryConstantsTest.java
+@@ -19,17 +19,17 @@ public class RegistryConstantsTest extends AbstractTestingBase {
+ 
+     @Test
+     public void testTrimMaterial() {
+-        this.testExcessConstants(TrimMaterial.class, Registry.TRIM_MATERIAL);
++        this.testExcessConstants(TrimMaterial.class, org.bukkit.Registry.TRIM_MATERIAL); // Paper - remap fix
+         this.testMissingConstants(TrimMaterial.class, Registries.TRIM_MATERIAL);
+     }
+ 
+     @Test
+     public void testTrimPattern() {
+-        this.testExcessConstants(TrimPattern.class, Registry.TRIM_PATTERN);
++        this.testExcessConstants(TrimPattern.class, org.bukkit.Registry.TRIM_PATTERN); // Paper - remap fix
+         this.testMissingConstants(TrimPattern.class, Registries.TRIM_PATTERN);
+     }
+ 
+-    private <T extends Keyed> void testExcessConstants(Class<T> clazz, Registry<T> registry) {
++    private <T extends Keyed> void testExcessConstants(Class<T> clazz, org.bukkit.Registry<T> registry) { // Paper - remap fix
+         List<NamespacedKey> excessKeys = new ArrayList<>();
+ 
+         for (Field field : clazz.getFields()) {
+diff --git a/src/test/java/org/bukkit/entity/EntityTypesTest.java b/src/test/java/org/bukkit/entity/EntityTypesTest.java
+index b1de312e902c83a2f95d80040abb9255e64431a9..aafa6f472c82f851fe7f5ae3111488bb732d0bcc 100644
+--- a/src/test/java/org/bukkit/entity/EntityTypesTest.java
++++ b/src/test/java/org/bukkit/entity/EntityTypesTest.java
+@@ -5,7 +5,6 @@ import java.util.Set;
+ import java.util.stream.Collectors;
+ import net.minecraft.core.registries.BuiltInRegistries;
+ import net.minecraft.resources.ResourceLocation;
+-import net.minecraft.world.entity.EntityType;
+ import org.bukkit.support.AbstractTestingBase;
+ import org.junit.Assert;
+ import org.junit.Test;
+@@ -16,8 +15,8 @@ public class EntityTypesTest extends AbstractTestingBase {
+     public void testMaps() {
+         Set<EntityType> allBukkit = Arrays.stream(EntityType.values()).filter((b) -> b.getName() != null).collect(Collectors.toSet());
+ 
+-        for (EntityType<?> nms : BuiltInRegistries.ENTITY_TYPE) {
+-            ResourceLocation key = EntityType.getKey(nms);
++        for (net.minecraft.world.entity.EntityType<?> nms : BuiltInRegistries.ENTITY_TYPE) { // Paper - remap fix
++            ResourceLocation key = net.minecraft.world.entity.EntityType.getKey(nms); // Paper - remap fix
+ 
+             org.bukkit.entity.EntityType bukkit = org.bukkit.entity.EntityType.fromName(key.getPath());
+             Assert.assertNotNull("Missing nms->bukkit " + key, bukkit);
+diff --git a/src/test/java/org/bukkit/entity/PandaGeneTest.java b/src/test/java/org/bukkit/entity/PandaGeneTest.java
+index 76e2ad676ae68846bdff3c3ef711751445fb0f3c..feee17192bca55a9cf1b2fc5b9609b888db77763 100644
+--- a/src/test/java/org/bukkit/entity/PandaGeneTest.java
++++ b/src/test/java/org/bukkit/entity/PandaGeneTest.java
+@@ -1,6 +1,5 @@
+ package org.bukkit.entity;
+ 
+-import net.minecraft.world.entity.animal.Panda;
+ import org.bukkit.craftbukkit.entity.CraftPanda;
+ import org.junit.Assert;
+ import org.junit.Test;
+@@ -10,7 +9,7 @@ public class PandaGeneTest {
+     @Test
+     public void testBukkit() {
+         for (Panda.Gene gene : Panda.Gene.values()) {
+-            Panda.Gene nms = CraftPanda.toNms(gene);
++            net.minecraft.world.entity.animal.Panda.Gene nms = CraftPanda.toNms(gene); // Paper - remap fix
+ 
+             Assert.assertNotNull("NMS gene null for " + gene, nms);
+             Assert.assertEquals("Recessive status did not match " + gene, gene.isRecessive(), nms.isRecessive());
+@@ -20,7 +19,7 @@ public class PandaGeneTest {
+ 
+     @Test
+     public void testNMS() {
+-        for (Panda.Gene gene : Panda.Gene.values()) {
++        for (net.minecraft.world.entity.animal.Panda.Gene gene : net.minecraft.world.entity.animal.Panda.Gene.values()) { // Paper - remap fix
+             org.bukkit.entity.Panda.Gene bukkit = CraftPanda.fromNms(gene);
+ 
+             Assert.assertNotNull("Bukkit gene null for " + gene, bukkit);

patches/unapplied/server/0003-Build-system-changes.patch

@@ -0,0 +1,176 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Zach Brown <zach.brown@destroystokyo.com>
+Date: Mon, 29 Feb 2016 20:40:33 -0600
+Subject: [PATCH] Build system changes
+
+== AT ==
+public net.minecraft.server.packs.VanillaPackResourcesBuilder safeGetPath(Ljava/net/URI;)Ljava/nio/file/Path;
+
+Co-authored-by: Jake Potrebic <jake.m.potrebic@gmail.com>
+
+diff --git a/build.gradle.kts b/build.gradle.kts
+index 3ec94658ddd0c2f7b3716742c247656d9c7c8866..b1c84b847f8845407eafc89d8b027b34cc6a95b8 100644
+--- a/build.gradle.kts
++++ b/build.gradle.kts
+@@ -9,10 +9,9 @@ plugins {
+ dependencies {
+     implementation(project(":paper-api"))
+     implementation("jline:jline:2.12.1")
+-    implementation("org.apache.logging.log4j:log4j-iostreams:2.19.0") {
+-        exclude(group = "org.apache.logging.log4j", module = "log4j-api")
+-    }
++    implementation("org.apache.logging.log4j:log4j-iostreams:2.19.0") // Paper - remove exclusion
+     implementation("org.ow2.asm:asm:9.5")
++    implementation("org.ow2.asm:asm-commons:9.5") // Paper - ASM event executor generation
+     implementation("commons-lang:commons-lang:2.6")
+     runtimeOnly("org.xerial:sqlite-jdbc:3.42.0.0")
+     runtimeOnly("com.mysql:mysql-connector-j:8.0.33")
+@@ -23,6 +22,8 @@ dependencies {
+ 
+     testImplementation("junit:junit:4.13.2")
+     testImplementation("org.hamcrest:hamcrest-library:1.3")
++
++    implementation("io.netty:netty-all:4.1.87.Final"); // Paper - Bump netty
+ }
+ 
+ val craftbukkitPackageVersion = "1_20_R1" // Paper
+@@ -34,6 +35,7 @@ tasks.jar {
+         val gitHash = git("rev-parse", "--short=7", "HEAD").getText().trim()
+         val implementationVersion = System.getenv("BUILD_NUMBER") ?: "\"$gitHash\""
+         val date = git("show", "-s", "--format=%ci", gitHash).getText().trim() // Paper
++        val gitBranch = git("rev-parse", "--abbrev-ref", "HEAD").getText().trim() // Paper
+         attributes(
+             "Main-Class" to "org.bukkit.craftbukkit.Main",
+             "Implementation-Title" to "CraftBukkit",
+@@ -42,6 +44,9 @@ tasks.jar {
+             "Specification-Title" to "Bukkit",
+             "Specification-Version" to project.version,
+             "Specification-Vendor" to "Bukkit Team",
++            "Git-Branch" to gitBranch, // Paper
++            "Git-Commit" to gitHash, // Paper
++            "CraftBukkit-Package-Version" to craftbukkitPackageVersion, // Paper
+         )
+         for (tld in setOf("net", "com", "org")) {
+             attributes("$tld/bukkit", "Sealed" to true)
+@@ -49,6 +54,11 @@ tasks.jar {
+     }
+ }
+ 
++tasks.compileJava {
++    // incremental compilation is currently broken due to patched files having compiled counterparts already on the compile classpath
++    options.setIncremental(false)
++}
++
+ publishing {
+     publications.create<MavenPublication>("maven") {
+         artifact(tasks.shadowJar)
+@@ -75,6 +85,17 @@ tasks.shadowJar {
+     }
+ }
+ 
++// Paper start
++val scanJar = tasks.register("scanJarForBadCalls", io.papermc.paperweight.tasks.ScanJarForBadCalls::class) {
++    badAnnotations.add("Lio/papermc/paper/annotation/DoNotUse;")
++    jarToScan.set(tasks.shadowJar.flatMap { it.archiveFile })
++    classpath.from(configurations.compileClasspath)
++}
++tasks.check {
++    dependsOn(scanJar)
++}
++// Paper end
++
+ tasks.test {
+     exclude("org/bukkit/craftbukkit/inventory/ItemStack*Test.class")
+ }
+@@ -132,7 +153,14 @@ tasks.registerRunTask("runReobf") {
+     classpath(runtimeClasspathWithoutVanillaServer)
+ }
+ 
++val runtimeClasspathForRunDev = sourceSets.main.flatMap { src ->
++    src.runtimeClasspath.elements.map { elements ->
++        elements.filterNot { file -> file.asFile.endsWith("minecraft.jar") }
++    }
++}
+ tasks.registerRunTask("runDev") {
+     description = "Spin up a non-relocated Mojang-mapped test server"
+-    classpath(sourceSets.main.map { it.runtimeClasspath })
++    classpath(tasks.filterProjectDir.flatMap { it.outputJar })
++    classpath(runtimeClasspathForRunDev)
++    jvmArgs("-DPaper.isRunDev=true")
+ }
+diff --git a/src/main/java/net/minecraft/resources/ResourceLocation.java b/src/main/java/net/minecraft/resources/ResourceLocation.java
+index 6eb213981aeb7e75e1ed75f1483bc98187726f6f..de37a6e2edf36107a04b3707b9c5bbd608fcab20 100644
+--- a/src/main/java/net/minecraft/resources/ResourceLocation.java
++++ b/src/main/java/net/minecraft/resources/ResourceLocation.java
+@@ -26,6 +26,7 @@ public class ResourceLocation implements Comparable<ResourceLocation> {
+     public static final char NAMESPACE_SEPARATOR = ':';
+     public static final String DEFAULT_NAMESPACE = "minecraft";
+     public static final String REALMS_NAMESPACE = "realms";
++    public static final String PAPER_NAMESPACE = "paper"; // Paper
+     private final String namespace;
+     private final String path;
+ 
+diff --git a/src/main/java/net/minecraft/server/Main.java b/src/main/java/net/minecraft/server/Main.java
+index e7240acad17dc9c0d93f2792cc0d90c1855ac436..ba96530f00faa1d113a14242eb8192349c7c944f 100644
+--- a/src/main/java/net/minecraft/server/Main.java
++++ b/src/main/java/net/minecraft/server/Main.java
+@@ -110,6 +110,17 @@ public class Main {
+             */ // CraftBukkit end
+ 
+         try {
++            // Paper start
++            if (Boolean.getBoolean("Paper.isRunDev")) {
++                net.minecraft.server.packs.VanillaPackResourcesBuilder.developmentConfig = builder -> {
++                    try {
++                        builder.pushAssetPath(net.minecraft.server.packs.PackType.SERVER_DATA, net.minecraft.server.packs.VanillaPackResourcesBuilder.safeGetPath(java.util.Objects.requireNonNull(Main.class.getResource("/data/.paperassetsroot"), "Missing required .paperassetsroot file").toURI()).getParent());
++                    } catch (java.net.URISyntaxException | IOException ex) {
++                        throw new RuntimeException(ex);
++                    }
++                };
++            }
++            // Paper end
+ 
+             Path path = (Path) optionset.valueOf("pidFile"); // CraftBukkit
+ 
+diff --git a/src/main/java/net/minecraft/server/packs/repository/ServerPacksSource.java b/src/main/java/net/minecraft/server/packs/repository/ServerPacksSource.java
+index 03bf7dfc289c6a02f19678d3c7041c027154b99d..43ce85977472fd831fa272ff1d81df4586352d72 100644
+--- a/src/main/java/net/minecraft/server/packs/repository/ServerPacksSource.java
++++ b/src/main/java/net/minecraft/server/packs/repository/ServerPacksSource.java
+@@ -28,7 +28,7 @@ public class ServerPacksSource extends BuiltInPackSource {
+     }
+ 
+     private static VanillaPackResources createVanillaPackSource() {
+-        return (new VanillaPackResourcesBuilder()).setMetadata(BUILT_IN_METADATA).exposeNamespace("minecraft").applyDevelopmentConfig().pushJarResources().build();
++        return (new VanillaPackResourcesBuilder()).setMetadata(BUILT_IN_METADATA).exposeNamespace("minecraft", ResourceLocation.PAPER_NAMESPACE).applyDevelopmentConfig().pushJarResources().build(); // Paper
+     }
+ 
+     @Override
+diff --git a/src/main/java/org/bukkit/craftbukkit/Main.java b/src/main/java/org/bukkit/craftbukkit/Main.java
+index e325cb56f2bafce21ce06bb5c674837abbb676e7..8a30ebbac91a0750c00ebbcb5372e6d2a45c064a 100644
+--- a/src/main/java/org/bukkit/craftbukkit/Main.java
++++ b/src/main/java/org/bukkit/craftbukkit/Main.java
+@@ -209,7 +209,7 @@ public class Main {
+                 }
+ 
+                 if (Main.class.getPackage().getImplementationVendor() != null && System.getProperty("IReallyKnowWhatIAmDoingISwear") == null) {
+-                    Date buildDate = new Date(Integer.parseInt(Main.class.getPackage().getImplementationVendor()) * 1000L);
++                    Date buildDate = new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss Z").parse(Main.class.getPackage().getImplementationVendor()); // Paper
+ 
+                     Calendar deadline = Calendar.getInstance();
+                     deadline.add(Calendar.DAY_OF_YEAR, -21);
+diff --git a/src/main/java/org/bukkit/craftbukkit/util/Versioning.java b/src/main/java/org/bukkit/craftbukkit/util/Versioning.java
+index 93046379d0cefd5d3236fc59e698809acdc18f80..774556a62eb240da42e84db4502e2ed43495be17 100644
+--- a/src/main/java/org/bukkit/craftbukkit/util/Versioning.java
++++ b/src/main/java/org/bukkit/craftbukkit/util/Versioning.java
+@@ -11,7 +11,7 @@ public final class Versioning {
+     public static String getBukkitVersion() {
+         String result = "Unknown-Version";
+ 
+-        InputStream stream = Bukkit.class.getClassLoader().getResourceAsStream("META-INF/maven/org.spigotmc/spigot-api/pom.properties");
++        InputStream stream = Bukkit.class.getClassLoader().getResourceAsStream("META-INF/maven/io.papermc.paper/paper-api/pom.properties");
+         Properties properties = new Properties();
+ 
+         if (stream != null) {
+diff --git a/src/main/resources/data/.paperassetsroot b/src/main/resources/data/.paperassetsroot
+new file mode 100644
+index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391

patches/unapplied/server/0004-Test-changes.patch

@@ -0,0 +1,280 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jake Potrebic <jake.m.potrebic@gmail.com>
+Date: Mon, 13 Feb 2023 14:14:56 -0800
+Subject: [PATCH] Test changes
+
+
+diff --git a/build.gradle.kts b/build.gradle.kts
+index b1c84b847f8845407eafc89d8b027b34cc6a95b8..784a2ae459d4a6afd6773d2298838c07c9152250 100644
+--- a/build.gradle.kts
++++ b/build.gradle.kts
+@@ -12,6 +12,7 @@ dependencies {
+     implementation("org.apache.logging.log4j:log4j-iostreams:2.19.0") // Paper - remove exclusion
+     implementation("org.ow2.asm:asm:9.5")
+     implementation("org.ow2.asm:asm-commons:9.5") // Paper - ASM event executor generation
++    testImplementation("org.mockito:mockito-core:4.9.0") // Paper - switch to mockito
+     implementation("commons-lang:commons-lang:2.6")
+     runtimeOnly("org.xerial:sqlite-jdbc:3.42.0.0")
+     runtimeOnly("com.mysql:mysql-connector-j:8.0.33")
+diff --git a/src/test/java/io/papermc/paper/testing/DummyServer.java b/src/test/java/io/papermc/paper/testing/DummyServer.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..e944e9dca13883c57e93e480ae5adfe51c342532
+--- /dev/null
++++ b/src/test/java/io/papermc/paper/testing/DummyServer.java
+@@ -0,0 +1,67 @@
++package io.papermc.paper.testing;
++
++import java.util.logging.Logger;
++import org.bukkit.Bukkit;
++import org.bukkit.Material;
++import org.bukkit.NamespacedKey;
++import org.bukkit.Server;
++import org.bukkit.command.SimpleCommandMap;
++import org.bukkit.craftbukkit.CraftRegistry;
++import org.bukkit.craftbukkit.block.data.CraftBlockData;
++import org.bukkit.craftbukkit.inventory.CraftItemFactory;
++import org.bukkit.craftbukkit.util.CraftMagicNumbers;
++import org.bukkit.craftbukkit.util.CraftNamespacedKey;
++import org.bukkit.plugin.PluginManager;
++import org.bukkit.plugin.SimplePluginManager;
++import org.bukkit.support.AbstractTestingBase;
++import org.mockito.Mockito;
++
++import static org.mockito.Mockito.any;
++import static org.mockito.Mockito.mock;
++import static org.mockito.Mockito.when;
++
++public final class DummyServer {
++
++    @SuppressWarnings({"deprecation", "removal"})
++    public static void setup() {
++        //noinspection ConstantValue
++        if (Bukkit.getServer() != null) {
++            return;
++        }
++
++        final Server dummyServer = mock(Server.class, Mockito.withSettings().stubOnly());
++
++        final Logger logger = Logger.getLogger(DummyServer.class.getCanonicalName());
++        when(dummyServer.getLogger()).thenReturn(logger);
++        when(dummyServer.getName()).thenReturn(DummyServer.class.getSimpleName());
++        when(dummyServer.getVersion()).thenReturn("Version_" + DummyServer.class.getPackage().getImplementationVersion());
++        when(dummyServer.getBukkitVersion()).thenReturn("BukkitVersion_" + DummyServer.class.getPackage().getImplementationVersion());
++
++        final Thread currentThread = Thread.currentThread();
++        when(dummyServer.isPrimaryThread()).thenAnswer(ignored -> Thread.currentThread().equals(currentThread));
++
++        when(dummyServer.getItemFactory()).thenReturn(CraftItemFactory.instance());
++
++        when(dummyServer.getUnsafe()).thenAnswer(ignored -> CraftMagicNumbers.INSTANCE); // lambda for lazy load
++
++        when(dummyServer.createBlockData(any(Material.class))).thenAnswer(invocation -> {
++            return CraftBlockData.newData(invocation.getArgument(0, Material.class), null);
++        });
++
++        when(dummyServer.getLootTable(any(NamespacedKey.class))).thenAnswer(invocation -> {
++            final NamespacedKey key = invocation.getArgument(0, NamespacedKey.class);
++            return new org.bukkit.craftbukkit.CraftLootTable(key, AbstractTestingBase.DATA_PACK.getLootData().getLootTable(CraftNamespacedKey.toMinecraft(key)));
++        });
++
++        when(dummyServer.getRegistry(any())).thenAnswer(invocation -> {
++            // LazyRegistry because the vanilla data hasn't been bootstrapped yet.
++            return new LazyRegistry(() -> CraftRegistry.createRegistry(invocation.getArgument(0, Class.class), AbstractTestingBase.REGISTRY_CUSTOM));
++        });
++
++        final PluginManager pluginManager = new SimplePluginManager(dummyServer, new SimpleCommandMap(dummyServer));
++        when(dummyServer.getPluginManager()).thenReturn(pluginManager);
++
++        Bukkit.setServer(dummyServer);
++
++    }
++}
+diff --git a/src/test/java/io/papermc/paper/testing/LazyRegistry.java b/src/test/java/io/papermc/paper/testing/LazyRegistry.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..c88749e839ee1a9cf8439c4218c8a98afbd9c491
+--- /dev/null
++++ b/src/test/java/io/papermc/paper/testing/LazyRegistry.java
+@@ -0,0 +1,30 @@
++package io.papermc.paper.testing;
++
++import java.util.Iterator;
++import java.util.function.Supplier;
++import java.util.stream.Stream;
++import java.util.stream.StreamSupport;
++import org.bukkit.Keyed;
++import org.bukkit.NamespacedKey;
++import org.bukkit.Registry;
++import org.jetbrains.annotations.NotNull;
++import org.jetbrains.annotations.Nullable;
++
++public record LazyRegistry(Supplier<Registry<Keyed>> supplier) implements Registry<Keyed> {
++
++    @NotNull
++    @Override
++    public Iterator<Keyed> iterator() {
++        return this.supplier().get().iterator();
++    }
++
++    @Override
++    public @Nullable Keyed get(@NotNull final NamespacedKey key) {
++        return this.supplier().get().get(key);
++    }
++
++    @Override
++    public @NotNull Stream<Keyed> stream() {
++        return StreamSupport.stream(this.supplier.get().spliterator(), false);
++    }
++}
+diff --git a/src/test/java/org/bukkit/support/AbstractTestingBase.java b/src/test/java/org/bukkit/support/AbstractTestingBase.java
+index 4f392c199fc31808d339659156f2e9b229e755e2..453e2189b842a6f6f52186578af1ee2e2fcba2e4 100644
+--- a/src/test/java/org/bukkit/support/AbstractTestingBase.java
++++ b/src/test/java/org/bukkit/support/AbstractTestingBase.java
+@@ -54,6 +54,7 @@ public abstract class AbstractTestingBase {
+         LayeredRegistryAccess<RegistryLayer> layers = RegistryLayer.createRegistryAccess();
+         layers = WorldLoader.loadAndReplaceLayer(resourceManager, layers, RegistryLayer.WORLDGEN, RegistryDataLoader.WORLDGEN_REGISTRIES);
+         REGISTRY_CUSTOM = layers.compositeAccess().freeze();
++        io.papermc.paper.testing.DummyServer.setup(); // Paper
+         // Register vanilla pack
+         DATA_PACK = ReloadableServerResources.loadResources(resourceManager, REGISTRY_CUSTOM, FeatureFlags.REGISTRY.allFlags(), Commands.CommandSelection.DEDICATED, 0, MoreExecutors.directExecutor(), MoreExecutors.directExecutor()).join();
+         // Bind tags
+@@ -61,7 +62,6 @@ public abstract class AbstractTestingBase {
+         // Biome shortcut
+         BIOMES = REGISTRY_CUSTOM.registryOrThrow(Registries.BIOME);
+ 
+-        DummyServer.setup();
+         DummyEnchantments.setup();
+ 
+         CraftRegistry.setMinecraftRegistry(REGISTRY_CUSTOM);
+diff --git a/src/test/java/org/bukkit/support/DummyServer.java b/src/test/java/org/bukkit/support/DummyServer.java
+deleted file mode 100644
+index e3197ea88b68de8f893f3fa986507b95b789645d..0000000000000000000000000000000000000000
+--- a/src/test/java/org/bukkit/support/DummyServer.java
++++ /dev/null
+@@ -1,127 +0,0 @@
+-package org.bukkit.support;
+-
+-import java.lang.reflect.InvocationHandler;
+-import java.lang.reflect.Method;
+-import java.lang.reflect.Proxy;
+-import java.util.HashMap;
+-import java.util.logging.Logger;
+-import org.bukkit.Bukkit;
+-import org.bukkit.Material;
+-import org.bukkit.NamespacedKey;
+-import org.bukkit.Server;
+-import org.bukkit.craftbukkit.CraftLootTable;
+-import org.bukkit.craftbukkit.CraftRegistry;
+-import org.bukkit.craftbukkit.block.data.CraftBlockData;
+-import org.bukkit.craftbukkit.inventory.CraftItemFactory;
+-import org.bukkit.craftbukkit.util.CraftMagicNumbers;
+-import org.bukkit.craftbukkit.util.CraftNamespacedKey;
+-import org.bukkit.craftbukkit.util.Versioning;
+-
+-public final class DummyServer implements InvocationHandler {
+-    private static interface MethodHandler {
+-        Object handle(DummyServer server, Object[] args);
+-    }
+-    private static final HashMap<Method, MethodHandler> methods = new HashMap<Method, MethodHandler>();
+-    static {
+-        try {
+-            methods.put(
+-                    Server.class.getMethod("getItemFactory"),
+-                    new MethodHandler() {
+-                        @Override
+-                        public Object handle(DummyServer server, Object[] args) {
+-                            return CraftItemFactory.instance();
+-                        }
+-                    }
+-                );
+-            methods.put(
+-                    Server.class.getMethod("getName"),
+-                    new MethodHandler() {
+-                        @Override
+-                        public Object handle(DummyServer server, Object[] args) {
+-                            return DummyServer.class.getName();
+-                        }
+-                    }
+-                );
+-            methods.put(
+-                    Server.class.getMethod("getVersion"),
+-                    new MethodHandler() {
+-                        @Override
+-                        public Object handle(DummyServer server, Object[] args) {
+-                            return DummyServer.class.getPackage().getImplementationVersion();
+-                        }
+-                    }
+-                );
+-            methods.put(
+-                    Server.class.getMethod("getBukkitVersion"),
+-                    new MethodHandler() {
+-                        @Override
+-                        public Object handle(DummyServer server, Object[] args) {
+-                            return Versioning.getBukkitVersion();
+-                        }
+-                    }
+-                );
+-            methods.put(
+-                    Server.class.getMethod("getLogger"),
+-                    new MethodHandler() {
+-                        final Logger logger = Logger.getLogger(DummyServer.class.getCanonicalName());
+-                        @Override
+-                        public Object handle(DummyServer server, Object[] args) {
+-                            return logger;
+-                        }
+-                    }
+-                );
+-            methods.put(
+-                    Server.class.getMethod("getUnsafe"),
+-                    new MethodHandler() {
+-                        @Override
+-                        public Object handle(DummyServer server, Object[] args) {
+-                            return CraftMagicNumbers.INSTANCE;
+-                        }
+-                    }
+-                );
+-            methods.put(
+-                    Server.class.getMethod("createBlockData", Material.class),
+-                    new MethodHandler() {
+-                        final Logger logger = Logger.getLogger(DummyServer.class.getCanonicalName());
+-                        @Override
+-                        public Object handle(DummyServer server, Object[] args) {
+-                            return CraftBlockData.newData((Material) args[0], null);
+-                        }
+-                    }
+-                );
+-            methods.put(Server.class.getMethod("getLootTable", NamespacedKey.class),
+-                    new MethodHandler() {
+-                        @Override
+-                        public Object handle(DummyServer server, Object[] args) {
+-                            NamespacedKey key = (NamespacedKey) args[0];
+-                            return new CraftLootTable(key, AbstractTestingBase.DATA_PACK.getLootData().getLootTable(CraftNamespacedKey.toMinecraft(key)));
+-                        }
+-                    }
+-                );
+-            methods.put(Server.class.getMethod("getRegistry", Class.class),
+-                    new MethodHandler() {
+-                        @Override
+-                        public Object handle(DummyServer server, Object[] args) {
+-                            return CraftRegistry.createRegistry((Class) args[0], AbstractTestingBase.REGISTRY_CUSTOM);
+-                        }
+-                    }
+-            );
+-            Bukkit.setServer(Proxy.getProxyClass(Server.class.getClassLoader(), Server.class).asSubclass(Server.class).getConstructor(InvocationHandler.class).newInstance(new DummyServer()));
+-        } catch (Throwable t) {
+-            throw new Error(t);
+-        }
+-    }
+-
+-    public static void setup() {}
+-
+-    private DummyServer() {};
+-
+-    @Override
+-    public Object invoke(Object proxy, Method method, Object[] args) {
+-        MethodHandler handler = DummyServer.methods.get(method);
+-        if (handler != null) {
+-            return handler.handle(this, args);
+-        }
+-        throw new UnsupportedOperationException(String.valueOf(method));
+-    }
+-}

patches/unapplied/server/0006-MC-Dev-fixes.patch

@@ -0,0 +1,259 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Wed, 30 Mar 2016 19:36:20 -0400
+Subject: [PATCH] MC Dev fixes
+
+
+diff --git a/src/main/java/net/minecraft/Util.java b/src/main/java/net/minecraft/Util.java
+index 2b7e2b7ecda6ac2b019c361163079fd747033719..90edfea7151f2ad259288545d512af7cd1b82f19 100644
+--- a/src/main/java/net/minecraft/Util.java
++++ b/src/main/java/net/minecraft/Util.java
+@@ -358,7 +358,7 @@ public class Util {
+     }
+ 
+     public static <K> Hash.Strategy<K> identityStrategy() {
+-        return Util.IdentityStrategy.INSTANCE;
++        return (Hash.Strategy<K>) Util.IdentityStrategy.INSTANCE; // Paper - decompile fix
+     }
+ 
+     public static <V> CompletableFuture<List<V>> sequence(List<? extends CompletableFuture<V>> futures) {
+diff --git a/src/main/java/net/minecraft/core/BlockPos.java b/src/main/java/net/minecraft/core/BlockPos.java
+index e89fa618fa20e3e843d8de81629e6dc551777823..2bb5e51f71cbf66819d198505aa4a5ecffd246c6 100644
+--- a/src/main/java/net/minecraft/core/BlockPos.java
++++ b/src/main/java/net/minecraft/core/BlockPos.java
+@@ -383,12 +383,12 @@ public class BlockPos extends Vec3i {
+                     if (this.index == l) {
+                         return this.endOfData();
+                     } else {
+-                        int i = this.index % i;
+-                        int j = this.index / i;
+-                        int k = j % j;
+-                        int l = j / j;
++                        int offsetX = this.index % i; // Paper - decomp fix
++                        int u = this.index / i; // Paper - decomp fix
++                        int offsetY = u % j; // Paper - decomp fix
++                        int offsetZ = u / j; // Paper - decomp fix
+                         ++this.index;
+-                        return this.cursor.set(startX + i, startY + k, startZ + l);
++                        return this.cursor.set(startX + offsetX, startY + offsetY, startZ + offsetZ); // Paper - decomp fix
+                     }
+                 }
+             };
+diff --git a/src/main/java/net/minecraft/core/registries/BuiltInRegistries.java b/src/main/java/net/minecraft/core/registries/BuiltInRegistries.java
+index fe671ee23a5d364e20571dede6fc6bca7d83e98c..baa88201c4d08fb4f32f1198e187d7ca138b0f0e 100644
+--- a/src/main/java/net/minecraft/core/registries/BuiltInRegistries.java
++++ b/src/main/java/net/minecraft/core/registries/BuiltInRegistries.java
+@@ -314,7 +314,7 @@ public class BuiltInRegistries {
+         LOADERS.put(resourceLocation, () -> {
+             return initializer.run(registry);
+         });
+-        WRITABLE_REGISTRY.register(key, registry, lifecycle);
++        WRITABLE_REGISTRY.register((ResourceKey) key, registry, lifecycle); // Paper - decompile fix
+         return registry;
+     }
+ 
+diff --git a/src/main/java/net/minecraft/network/ConnectionProtocol.java b/src/main/java/net/minecraft/network/ConnectionProtocol.java
+index c4c1fc4e082d4d35327735e0704ada4e96195db2..a30fa3d54b70ab63d24dd67a69f39742335aff1e 100644
+--- a/src/main/java/net/minecraft/network/ConnectionProtocol.java
++++ b/src/main/java/net/minecraft/network/ConnectionProtocol.java
+@@ -335,7 +335,7 @@ public enum ConnectionProtocol implements BundlerInfo.Provider {
+ 
+         public void listAllPackets(Consumer<Class<? extends Packet<?>>> consumer) {
+             this.classToId.keySet().stream().filter((type) -> {
+-                return type != BundleDelimiterPacket.class;
++                return !type.equals(BundleDelimiterPacket.class); // Paper - fix of some kind
+             }).forEach(consumer);
+             this.extraClasses.forEach(consumer);
+         }
+diff --git a/src/main/java/net/minecraft/network/chat/ComponentUtils.java b/src/main/java/net/minecraft/network/chat/ComponentUtils.java
+index 9ff8afe750bc469c11c70b2f44c8a78887a8cd00..ea30dad0134644a8ad292a892450404203f3535e 100644
+--- a/src/main/java/net/minecraft/network/chat/ComponentUtils.java
++++ b/src/main/java/net/minecraft/network/chat/ComponentUtils.java
+@@ -138,9 +138,8 @@ public class ComponentUtils {
+             ComponentContents string = text.getContents();
+             if (string instanceof TranslatableContents) {
+                 TranslatableContents translatableContents = (TranslatableContents)string;
+-                String string = translatableContents.getKey();
+                 String string2 = translatableContents.getFallback();
+-                return string2 != null || Language.getInstance().has(string);
++                return string2 != null || Language.getInstance().has(translatableContents.getKey()); // Paper - decompile fix
+             }
+         }
+ 
+diff --git a/src/main/java/net/minecraft/resources/RegistryDataLoader.java b/src/main/java/net/minecraft/resources/RegistryDataLoader.java
+index 41d6569c00db3d467f6e90d33ebd261529b89f4c..5f051cb22ae77f4d8994b07ac5b963bd0ff05673 100644
+--- a/src/main/java/net/minecraft/resources/RegistryDataLoader.java
++++ b/src/main/java/net/minecraft/resources/RegistryDataLoader.java
+@@ -91,7 +91,7 @@ public class RegistryDataLoader {
+         return new RegistryOps.RegistryInfoLookup() {
+             @Override
+             public <T> Optional<RegistryOps.RegistryInfo<T>> lookup(ResourceKey<? extends Registry<? extends T>> registryRef) {
+-                return Optional.ofNullable(map.get(registryRef));
++                return Optional.ofNullable((RegistryOps.RegistryInfo<T>) map.get(registryRef)); // Paper - decompile fix
+             }
+         };
+     }
+diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
+index 6877a10fe56b46cf3fb7ccccf5a55e57d03048e9..8c7d762219e848387b153fb50553b7de58bc9627 100644
+--- a/src/main/java/net/minecraft/server/MinecraftServer.java
++++ b/src/main/java/net/minecraft/server/MinecraftServer.java
+@@ -1774,7 +1774,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+             PackRepository resourcepackrepository = this.packRepository;
+ 
+             Objects.requireNonNull(this.packRepository);
+-            return stream.map(resourcepackrepository::getPack).filter(Objects::nonNull).map(Pack::open).collect(ImmutableList.toImmutableList()); // CraftBukkit - decompile error
++            return stream.<Pack>map(resourcepackrepository::getPack).filter(Objects::nonNull).map(Pack::open).collect(ImmutableList.toImmutableList()); // CraftBukkit - decompile error // Paper - decompile error // todo: is this needed anymore?
+         }, this).thenCompose((immutablelist) -> {
+             MultiPackResourceManager resourcemanager = new MultiPackResourceManager(PackType.SERVER_DATA, immutablelist);
+ 
+diff --git a/src/main/java/net/minecraft/server/level/Ticket.java b/src/main/java/net/minecraft/server/level/Ticket.java
+index 2f66abf62d303342f5fe614fb3e35e7844497ffc..b346fa94b23d81da7da073f71dd12e672e0f079c 100644
+--- a/src/main/java/net/minecraft/server/level/Ticket.java
++++ b/src/main/java/net/minecraft/server/level/Ticket.java
+@@ -21,7 +21,7 @@ public final class Ticket<T> implements Comparable<Ticket<?>> {
+             return i;
+         } else {
+             int j = Integer.compare(System.identityHashCode(this.type), System.identityHashCode(ticket.type));
+-            return j != 0 ? j : this.type.getComparator().compare(this.key, ticket.key);
++            return j != 0 ? j : this.type.getComparator().compare(this.key, (T)ticket.key); // Paper - decompile fix
+         }
+     }
+ 
+diff --git a/src/main/java/net/minecraft/util/SortedArraySet.java b/src/main/java/net/minecraft/util/SortedArraySet.java
+index 2dc801061025888192c3bf2c4c38b928c16a0165..ca788f0dcec4a117b410fe8348969e056b138b1e 100644
+--- a/src/main/java/net/minecraft/util/SortedArraySet.java
++++ b/src/main/java/net/minecraft/util/SortedArraySet.java
+@@ -28,7 +28,7 @@ public class SortedArraySet<T> extends AbstractSet<T> {
+     }
+ 
+     public static <T extends Comparable<T>> SortedArraySet<T> create(int initialCapacity) {
+-        return new SortedArraySet<>(initialCapacity, Comparator.naturalOrder());
++        return new SortedArraySet<>(initialCapacity, Comparator.<T>naturalOrder()); // Paper - decompile fix
+     }
+ 
+     public static <T> SortedArraySet<T> create(Comparator<T> comparator) {
+diff --git a/src/main/java/net/minecraft/world/entity/animal/camel/Camel.java b/src/main/java/net/minecraft/world/entity/animal/camel/Camel.java
+index d6e25c7f5dc6c219e2590aa8b1ffd51a2120d50e..40cdff9eaa1e78e02060d970e477d96f960cfed3 100644
+--- a/src/main/java/net/minecraft/world/entity/animal/camel/Camel.java
++++ b/src/main/java/net/minecraft/world/entity/animal/camel/Camel.java
+@@ -151,7 +151,7 @@ public class Camel extends AbstractHorse implements PlayerRideableJumping, Rider
+     @Override
+     protected void customServerAiStep() {
+         this.level().getProfiler().push("camelBrain");
+-        Brain<?> brain = this.getBrain();
++        Brain<Camel> brain = (Brain<Camel>) this.getBrain(); // Paper - decompile fix
+         brain.tick((ServerLevel)this.level(), this);
+         this.level().getProfiler().pop();
+         this.level().getProfiler().push("camelActivityUpdate");
+diff --git a/src/main/java/net/minecraft/world/entity/animal/frog/Frog.java b/src/main/java/net/minecraft/world/entity/animal/frog/Frog.java
+index e8da5e51449d908de492b55dfa21e8d1108514fa..22eb0a8fc35baa04b34265b62aa29a71f3cc7343 100644
+--- a/src/main/java/net/minecraft/world/entity/animal/frog/Frog.java
++++ b/src/main/java/net/minecraft/world/entity/animal/frog/Frog.java
+@@ -99,7 +99,7 @@ public class Frog extends Animal implements VariantHolder<FrogVariant> {
+ 
+     @Override
+     public Brain<Frog> getBrain() {
+-        return super.getBrain();
++        return (Brain<Frog>) super.getBrain(); // Paper - decompile fix
+     }
+ 
+     @Override
+diff --git a/src/main/java/net/minecraft/world/entity/monster/hoglin/Hoglin.java b/src/main/java/net/minecraft/world/entity/monster/hoglin/Hoglin.java
+index 555b52e2d9a6d4db7a527cda46ba6acf711da697..98c41e87b644f79ebfd45af2e0d7b887a3f5d00b 100644
+--- a/src/main/java/net/minecraft/world/entity/monster/hoglin/Hoglin.java
++++ b/src/main/java/net/minecraft/world/entity/monster/hoglin/Hoglin.java
+@@ -123,7 +123,7 @@ public class Hoglin extends Animal implements Enemy, HoglinBase {
+ 
+     @Override
+     public Brain<Hoglin> getBrain() {
+-        return super.getBrain();
++        return (Brain<Hoglin>) super.getBrain(); // Paper - decompile fix
+     }
+ 
+     @Override
+diff --git a/src/main/java/net/minecraft/world/item/crafting/RecipeManager.java b/src/main/java/net/minecraft/world/item/crafting/RecipeManager.java
+index 4d2d23ff118e9307d50ca2a5194b83450c91a752..ab6dc3449a1d3b7acf1d7bf5ac1c24224cc252c7 100644
+--- a/src/main/java/net/minecraft/world/item/crafting/RecipeManager.java
++++ b/src/main/java/net/minecraft/world/item/crafting/RecipeManager.java
+@@ -78,7 +78,7 @@ public class RecipeManager extends SimpleJsonResourceReloadListener {
+         }
+ 
+         this.recipes = (Map) map1.entrySet().stream().collect(ImmutableMap.toImmutableMap(Entry::getKey, (entry1) -> {
+-            return (entry1.getValue()); // CraftBukkit
++            return entry1.getValue(); // CraftBukkit // Paper - decompile fix - *shrugs internally* // todo: is this needed anymore?
+         }));
+         this.byName = Maps.newHashMap(builder.build()); // CraftBukkit
+         RecipeManager.LOGGER.info("Loaded {} recipes", map1.size());
+diff --git a/src/main/java/net/minecraft/world/level/block/CeilingHangingSignBlock.java b/src/main/java/net/minecraft/world/level/block/CeilingHangingSignBlock.java
+index 769614aeb4ca914abcf0f770240a3d4c916f08cd..6c9d163b9f857806461dc72e54713f1a4f3a5c31 100644
+--- a/src/main/java/net/minecraft/world/level/block/CeilingHangingSignBlock.java
++++ b/src/main/java/net/minecraft/world/level/block/CeilingHangingSignBlock.java
+@@ -53,8 +53,10 @@ public class CeilingHangingSignBlock extends SignBlock {
+     public InteractionResult use(BlockState state, Level world, BlockPos pos, Player player, InteractionHand hand, BlockHitResult hit) {
+         BlockEntity itemStack = world.getBlockEntity(pos);
+         if (itemStack instanceof SignBlockEntity signBlockEntity) {
+-            ItemStack itemStack = player.getItemInHand(hand);
+-            if (this.shouldTryToChainAnotherHangingSign(player, hit, signBlockEntity, itemStack)) {
++            // Paper start - decompile fixes
++            ItemStack itemStack0 = player.getItemInHand(hand);
++            if (this.shouldTryToChainAnotherHangingSign(player, hit, signBlockEntity, itemStack0)) {
++            // Paper end - decompile fixes
+                 return InteractionResult.PASS;
+             }
+         }
+diff --git a/src/main/java/net/minecraft/world/level/block/WallHangingSignBlock.java b/src/main/java/net/minecraft/world/level/block/WallHangingSignBlock.java
+index db48010e633165972d2eac339dd7d1fd5a2f5bd8..d818d3ea6d28aa6ffb62127d4efd585d6f2935d1 100644
+--- a/src/main/java/net/minecraft/world/level/block/WallHangingSignBlock.java
++++ b/src/main/java/net/minecraft/world/level/block/WallHangingSignBlock.java
+@@ -52,8 +52,10 @@ public class WallHangingSignBlock extends SignBlock {
+     public InteractionResult use(BlockState state, Level world, BlockPos pos, Player player, InteractionHand hand, BlockHitResult hit) {
+         BlockEntity itemStack = world.getBlockEntity(pos);
+         if (itemStack instanceof SignBlockEntity signBlockEntity) {
+-            ItemStack itemStack = player.getItemInHand(hand);
+-            if (this.shouldTryToChainAnotherHangingSign(state, player, hit, signBlockEntity, itemStack)) {
++            // Paper start - decompile fixes
++            ItemStack itemStack0 = player.getItemInHand(hand);
++            if (this.shouldTryToChainAnotherHangingSign(state, player, hit, signBlockEntity, itemStack0)) {
++            // Paper end
+                 return InteractionResult.PASS;
+             }
+         }
+diff --git a/src/main/java/net/minecraft/world/level/chunk/PalettedContainer.java b/src/main/java/net/minecraft/world/level/chunk/PalettedContainer.java
+index b445f90b70d5a74f5bdc1b081500da4742e1c093..afba733824d84d650e669eda028bf4d28cf006b4 100644
+--- a/src/main/java/net/minecraft/world/level/chunk/PalettedContainer.java
++++ b/src/main/java/net/minecraft/world/level/chunk/PalettedContainer.java
+@@ -56,7 +56,7 @@ public class PalettedContainer<T> implements PaletteResize<T>, PalettedContainer
+     }
+ 
+     private static <T, C extends PalettedContainerRO<T>> Codec<C> codec(IdMap<T> idList, Codec<T> entryCodec, PalettedContainer.Strategy provider, T defaultValue, PalettedContainerRO.Unpacker<T, C> reader) {
+-        return RecordCodecBuilder.<PalettedContainerRO.PackedData>create((instance) -> {
++        return RecordCodecBuilder.<PalettedContainerRO.PackedData<T>>create((instance) -> { // Paper - decompile fix
+             return instance.group(entryCodec.mapResult(ExtraCodecs.orElsePartial(defaultValue)).listOf().fieldOf("palette").forGetter(PalettedContainerRO.PackedData::paletteEntries), Codec.LONG_STREAM.optionalFieldOf("data").forGetter(PalettedContainerRO.PackedData::storage)).apply(instance, PalettedContainerRO.PackedData::new);
+         }).comapFlatMap((serialized) -> {
+             return reader.read(idList, provider, serialized);
+diff --git a/src/main/java/net/minecraft/world/level/entity/EntityLookup.java b/src/main/java/net/minecraft/world/level/entity/EntityLookup.java
+index 6b91771a4bf559881a4f3e6c98500e09b33d16e0..21a2800db22f287b9c6a8290326fdf3b94ae94b1 100644
+--- a/src/main/java/net/minecraft/world/level/entity/EntityLookup.java
++++ b/src/main/java/net/minecraft/world/level/entity/EntityLookup.java
+@@ -19,7 +19,7 @@ public class EntityLookup<T extends EntityAccess> {
+     public <U extends T> void getEntities(EntityTypeTest<T, U> filter, AbortableIterationConsumer<U> consumer) {
+         for(T entityAccess : this.byId.values()) {
+             U entityAccess2 = (U)((EntityAccess)filter.tryCast(entityAccess));
+-            if (entityAccess2 != null && consumer.accept((T)entityAccess2).shouldAbort()) {
++            if (entityAccess2 != null && consumer.accept(entityAccess2).shouldAbort()) { // Paper - decompile fix
+                 return;
+             }
+         }
+diff --git a/src/main/java/net/minecraft/world/level/entity/EntitySection.java b/src/main/java/net/minecraft/world/level/entity/EntitySection.java
+index 69a19dbf58cde41680d086e78b9a12ffee602dbf..5dcb7f9cab097990148f5a7c4ccbe1556afdd514 100644
+--- a/src/main/java/net/minecraft/world/level/entity/EntitySection.java
++++ b/src/main/java/net/minecraft/world/level/entity/EntitySection.java
+@@ -44,7 +44,7 @@ public class EntitySection<T extends EntityAccess> {
+         } else {
+             for(T entityAccess : collection) {
+                 U entityAccess2 = (U)((EntityAccess)type.tryCast(entityAccess));
+-                if (entityAccess2 != null && entityAccess.getBoundingBox().intersects(box) && consumer.accept((T)entityAccess2).shouldAbort()) {
++                if (entityAccess2 != null && entityAccess.getBoundingBox().intersects(box) && consumer.accept(entityAccess2).shouldAbort()) { // Paper - decompile fix
+                     return AbortableIterationConsumer.Continuation.ABORT;
+                 }
+             }

patches/unapplied/server/0008-CB-fixes.patch

@@ -0,0 +1,101 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jake Potrebic <jake.m.potrebic@gmail.com>
+Date: Fri, 25 Feb 2022 07:14:48 -0800
+Subject: [PATCH] CB fixes
+
+* Missing Level -> LevelStem generic in StructureCheck
+  Need to use the right for injectDatafixingContext (Spottedleaf)
+
+* Removed incorrect parent perm for `minecraft.debugstick.always` (Machine_Maker)
+
+* Fixed method signature of Marker#addPassenger (Machine_Maker)
+
+* Removed unneeded UOE in CustomWorldChunkManager (extends BiomeSource) (Machine_Maker)
+
+* Honor Server#getLootTable method contract (Machine_Maker)
+
+Co-authored-by: Spottedleaf <Spottedleaf@users.noreply.github.com>
+
+diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
+index 82435da47f0f7db73556310f84dc538a7c5f0809..ebae711991a3ae35e35c2cffa8d928677c205492 100644
+--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
++++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
+@@ -298,7 +298,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
+ 
+         long l = minecraftserver.getWorldData().worldGenOptions().seed();
+ 
+-        this.structureCheck = new StructureCheck(this.chunkSource.chunkScanner(), this.registryAccess(), minecraftserver.getStructureManager(), resourcekey, chunkgenerator, this.chunkSource.randomState(), this, chunkgenerator.getBiomeSource(), l, datafixer);
++        this.structureCheck = new StructureCheck(this.chunkSource.chunkScanner(), this.registryAccess(), minecraftserver.getStructureManager(), this.getTypeKey(), chunkgenerator, this.chunkSource.randomState(), this, chunkgenerator.getBiomeSource(), l, datafixer); // Paper - Fix missing CB diff
+         this.structureManager = new StructureManager(this, this.serverLevelData.worldGenOptions(), this.structureCheck); // CraftBukkit
+         if ((this.dimension() == Level.END && this.dimensionTypeRegistration().is(BuiltinDimensionTypes.END)) || env == org.bukkit.World.Environment.THE_END) { // CraftBukkit - Allow to create EnderDragonBattle in default and custom END
+             this.dragonFight = new EndDragonFight(this, this.serverLevelData.worldGenOptions().seed(), this.serverLevelData.endDragonFightData()); // CraftBukkit
+diff --git a/src/main/java/net/minecraft/world/entity/animal/camel/Camel.java b/src/main/java/net/minecraft/world/entity/animal/camel/Camel.java
+index 40cdff9eaa1e78e02060d970e477d96f960cfed3..c853123c451c41beb42209c7edc14a5dcffa2a50 100644
+--- a/src/main/java/net/minecraft/world/entity/animal/camel/Camel.java
++++ b/src/main/java/net/minecraft/world/entity/animal/camel/Camel.java
+@@ -446,9 +446,9 @@ public class Camel extends AbstractHorse implements PlayerRideableJumping, Rider
+     }
+ 
+     @Override
+-    protected void actuallyHurt(DamageSource source, float amount) {
++    protected boolean damageEntity0(DamageSource source, float amount) { // Paper - fix CB method rename issue
+         this.standUpInstantly();
+-        super.actuallyHurt(source, amount);
++        return super.damageEntity0(source, amount); // Paper - fix CB method rename issue
+     }
+ 
+     @Override
+diff --git a/src/main/java/net/minecraft/world/level/levelgen/structure/StructureCheck.java b/src/main/java/net/minecraft/world/level/levelgen/structure/StructureCheck.java
+index 161ad6ab1443b2ce33a2d7d91d189c855db0453b..15a9736a870055d639d03063c7cf67fd769fff36 100644
+--- a/src/main/java/net/minecraft/world/level/levelgen/structure/StructureCheck.java
++++ b/src/main/java/net/minecraft/world/level/levelgen/structure/StructureCheck.java
+@@ -43,7 +43,7 @@ public class StructureCheck {
+     private final Registry<Biome> biomes;
+     private final Registry<Structure> structureConfigs;
+     private final StructureTemplateManager structureTemplateManager;
+-    private final ResourceKey<Level> dimension;
++    private final ResourceKey<net.minecraft.world.level.dimension.LevelStem> dimension; // Paper - fix missing CB diff
+     private final ChunkGenerator chunkGenerator;
+     private final RandomState randomState;
+     private final LevelHeightAccessor heightAccessor;
+@@ -53,7 +53,7 @@ public class StructureCheck {
+     private final Long2ObjectMap<Object2IntMap<Structure>> loadedChunks = new Long2ObjectOpenHashMap<>();
+     private final Map<Structure, Long2BooleanMap> featureChecks = new HashMap<>();
+ 
+-    public StructureCheck(ChunkScanAccess chunkIoWorker, RegistryAccess registryManager, StructureTemplateManager structureTemplateManager, ResourceKey<Level> worldKey, ChunkGenerator chunkGenerator, RandomState noiseConfig, LevelHeightAccessor world, BiomeSource biomeSource, long seed, DataFixer dataFixer) {
++    public StructureCheck(ChunkScanAccess chunkIoWorker, RegistryAccess registryManager, StructureTemplateManager structureTemplateManager, ResourceKey<net.minecraft.world.level.dimension.LevelStem> worldKey, ChunkGenerator chunkGenerator, RandomState noiseConfig, LevelHeightAccessor world, BiomeSource biomeSource, long seed, DataFixer dataFixer) { // Paper - fix missing CB diff
+         this.storageAccess = chunkIoWorker;
+         this.registryAccess = registryManager;
+         this.structureTemplateManager = structureTemplateManager;
+diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+index 34209c5f4465eadb095336d8023739e6f0f2785b..c9bbe1d3a44cea1860f0ecba9580fe8ee87f6929 100644
+--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
++++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+@@ -2357,7 +2357,13 @@ public final class CraftServer implements Server {
+         Preconditions.checkArgument(key != null, "NamespacedKey key cannot be null");
+ 
+         LootDataManager registry = this.getServer().getLootData();
+-        return new CraftLootTable(key, registry.getLootTable(CraftNamespacedKey.toMinecraft(key)));
++        // Paper start - honor method contract
++        final ResourceLocation lootTableKey = CraftNamespacedKey.toMinecraft(key);
++        if (registry.getLootTable(lootTableKey) == net.minecraft.world.level.storage.loot.LootTable.EMPTY) {
++            return null;
++        }
++        return new CraftLootTable(key, registry.getLootTable(lootTableKey));
++        // Paper end
+     }
+ 
+     @Override
+diff --git a/src/main/java/org/bukkit/craftbukkit/util/permissions/CraftDefaultPermissions.java b/src/main/java/org/bukkit/craftbukkit/util/permissions/CraftDefaultPermissions.java
+index c93eec7a81ed83dc9190417dd51acb2780d3b60d..70d3949616c63038ad3e9bd1069db5ea2fb3f3b8 100644
+--- a/src/main/java/org/bukkit/craftbukkit/util/permissions/CraftDefaultPermissions.java
++++ b/src/main/java/org/bukkit/craftbukkit/util/permissions/CraftDefaultPermissions.java
+@@ -15,7 +15,7 @@ public final class CraftDefaultPermissions {
+         DefaultPermissions.registerPermission(CraftDefaultPermissions.ROOT + ".nbt.place", "Gives the user the ability to place restricted blocks with NBT in creative", org.bukkit.permissions.PermissionDefault.OP, parent);
+         DefaultPermissions.registerPermission(CraftDefaultPermissions.ROOT + ".nbt.copy", "Gives the user the ability to copy NBT in creative", org.bukkit.permissions.PermissionDefault.TRUE, parent);
+         DefaultPermissions.registerPermission(CraftDefaultPermissions.ROOT + ".debugstick", "Gives the user the ability to use the debug stick in creative", org.bukkit.permissions.PermissionDefault.OP, parent);
+-        DefaultPermissions.registerPermission(CraftDefaultPermissions.ROOT + ".debugstick.always", "Gives the user the ability to use the debug stick in all game modes", org.bukkit.permissions.PermissionDefault.FALSE, parent);
++        DefaultPermissions.registerPermission(CraftDefaultPermissions.ROOT + ".debugstick.always", "Gives the user the ability to use the debug stick in all game modes", org.bukkit.permissions.PermissionDefault.FALSE/* , parent */); // Paper - should not have this parent, as it's not a "vanilla" utility
+         // Spigot end
+         parent.recalculatePermissibles();
+     }

patches/unapplied/server/0011-Paper-command.patch

@@ -0,0 +1,665 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jason Penilla <11360596+jpenilla@users.noreply.github.com>
+Date: Mon, 29 Feb 2016 21:02:09 -0600
+Subject: [PATCH] Paper command
+
+Co-authored-by: Zach Brown <zach.brown@destroystokyo.com>
+
+diff --git a/src/main/java/io/papermc/paper/command/CallbackCommand.java b/src/main/java/io/papermc/paper/command/CallbackCommand.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..fa4202abd13c1c286bd398938103d1103d5443e7
+--- /dev/null
++++ b/src/main/java/io/papermc/paper/command/CallbackCommand.java
+@@ -0,0 +1,35 @@
++package io.papermc.paper.command;
++
++import io.papermc.paper.adventure.providers.ClickCallbackProviderImpl;
++import org.bukkit.command.Command;
++import org.bukkit.command.CommandSender;
++import org.checkerframework.checker.nullness.qual.NonNull;
++import org.checkerframework.framework.qual.DefaultQualifier;
++import java.util.UUID;
++
++@DefaultQualifier(NonNull.class)
++public class CallbackCommand extends Command {
++
++    protected CallbackCommand(final String name) {
++        super(name);
++        this.description = "ClickEvent callback";
++        this.usageMessage = "/callback <uuid>";
++    }
++
++    @Override
++    public boolean execute(final CommandSender sender, final String commandLabel, final String[] args) {
++        if (args.length != 1) {
++            return false;
++        }
++
++        final UUID id;
++        try {
++            id = UUID.fromString(args[0]);
++        } catch (final IllegalArgumentException ignored) {
++            return false;
++        }
++
++        ClickCallbackProviderImpl.CALLBACK_MANAGER.runCallback(sender, id);
++        return true;
++    }
++}
+diff --git a/src/main/java/io/papermc/paper/command/CommandUtil.java b/src/main/java/io/papermc/paper/command/CommandUtil.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..953c30500892e5f0c55b8597bc708ea85bf56d6e
+--- /dev/null
++++ b/src/main/java/io/papermc/paper/command/CommandUtil.java
+@@ -0,0 +1,69 @@
++package io.papermc.paper.command;
++
++import com.google.common.base.Functions;
++import com.google.common.collect.Iterables;
++import com.google.common.collect.Lists;
++import java.util.ArrayList;
++import java.util.Arrays;
++import java.util.Collection;
++import java.util.Iterator;
++import java.util.List;
++import net.minecraft.resources.ResourceLocation;
++import org.bukkit.command.CommandSender;
++import org.checkerframework.checker.nullness.qual.NonNull;
++import org.checkerframework.framework.qual.DefaultQualifier;
++
++@DefaultQualifier(NonNull.class)
++public final class CommandUtil {
++    private CommandUtil() {
++    }
++
++    // Code from Mojang - copyright them
++    public static List<String> getListMatchingLast(
++        final CommandSender sender,
++        final String[] args,
++        final String... matches
++    ) {
++        return getListMatchingLast(sender, args, Arrays.asList(matches));
++    }
++
++    public static boolean matches(final String s, final String s1) {
++        return s1.regionMatches(true, 0, s, 0, s.length());
++    }
++
++    public static List<String> getListMatchingLast(
++        final CommandSender sender,
++        final String[] strings,
++        final Collection<?> collection
++    ) {
++        String last = strings[strings.length - 1];
++        ArrayList<String> results = Lists.newArrayList();
++
++        if (!collection.isEmpty()) {
++            Iterator iterator = Iterables.transform(collection, Functions.toStringFunction()).iterator();
++
++            while (iterator.hasNext()) {
++                String s1 = (String) iterator.next();
++
++                if (matches(last, s1) && (sender.hasPermission(PaperCommand.BASE_PERM + s1) || sender.hasPermission("bukkit.command.paper"))) {
++                    results.add(s1);
++                }
++            }
++
++            if (results.isEmpty()) {
++                iterator = collection.iterator();
++
++                while (iterator.hasNext()) {
++                    Object object = iterator.next();
++
++                    if (object instanceof ResourceLocation && matches(last, ((ResourceLocation) object).getPath())) {
++                        results.add(String.valueOf(object));
++                    }
++                }
++            }
++        }
++
++        return results;
++    }
++    // end copy stuff
++}
+diff --git a/src/main/java/io/papermc/paper/command/PaperCommand.java b/src/main/java/io/papermc/paper/command/PaperCommand.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..8ccc59473bac983ced6b9e4a57e0ec4ebd2b0f32
+--- /dev/null
++++ b/src/main/java/io/papermc/paper/command/PaperCommand.java
+@@ -0,0 +1,143 @@
++package io.papermc.paper.command;
++
++import io.papermc.paper.command.subcommands.*;
++import it.unimi.dsi.fastutil.Pair;
++import java.util.ArrayList;
++import java.util.Arrays;
++import java.util.Collections;
++import java.util.HashMap;
++import java.util.List;
++import java.util.Locale;
++import java.util.Map;
++import java.util.Set;
++import java.util.stream.Collectors;
++import net.minecraft.Util;
++import org.bukkit.Bukkit;
++import org.bukkit.Location;
++import org.bukkit.command.Command;
++import org.bukkit.command.CommandSender;
++import org.bukkit.permissions.Permission;
++import org.bukkit.permissions.PermissionDefault;
++import org.bukkit.plugin.PluginManager;
++import org.checkerframework.checker.nullness.qual.NonNull;
++import org.checkerframework.checker.nullness.qual.Nullable;
++import org.checkerframework.framework.qual.DefaultQualifier;
++
++import static net.kyori.adventure.text.Component.text;
++import static net.kyori.adventure.text.format.NamedTextColor.RED;
++
++@DefaultQualifier(NonNull.class)
++public final class PaperCommand extends Command {
++    static final String BASE_PERM = "bukkit.command.paper.";
++    // subcommand label -> subcommand
++    private static final Map<String, PaperSubcommand> SUBCOMMANDS = Util.make(() -> {
++        final Map<Set<String>, PaperSubcommand> commands = new HashMap<>();
++
++        commands.put(Set.of("heap"), new HeapDumpCommand());
++        commands.put(Set.of("entity"), new EntityCommand());
++        commands.put(Set.of("reload"), new ReloadCommand());
++        commands.put(Set.of("version"), new VersionCommand());
++
++        return commands.entrySet().stream()
++            .flatMap(entry -> entry.getKey().stream().map(s -> Map.entry(s, entry.getValue())))
++            .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
++    });
++    private static final Set<String> COMPLETABLE_SUBCOMMANDS = SUBCOMMANDS.entrySet().stream().filter(entry -> entry.getValue().tabCompletes()).map(Map.Entry::getKey).collect(Collectors.toSet());
++    // alias -> subcommand label
++    private static final Map<String, String> ALIASES = Util.make(() -> {
++        final Map<String, Set<String>> aliases = new HashMap<>();
++
++        aliases.put("version", Set.of("ver"));
++
++        return aliases.entrySet().stream()
++            .flatMap(entry -> entry.getValue().stream().map(s -> Map.entry(s, entry.getKey())))
++            .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
++    });
++
++    public PaperCommand(final String name) {
++        super(name);
++        this.description = "Paper related commands";
++        this.usageMessage = "/paper [" + String.join(" | ", SUBCOMMANDS.keySet()) + "]";
++        final List<String> permissions = new ArrayList<>();
++        permissions.add("bukkit.command.paper");
++        permissions.addAll(SUBCOMMANDS.keySet().stream().map(s -> BASE_PERM + s).toList());
++        this.setPermission(String.join(";", permissions));
++        final PluginManager pluginManager = Bukkit.getServer().getPluginManager();
++        for (final String perm : permissions) {
++            pluginManager.addPermission(new Permission(perm, PermissionDefault.OP));
++        }
++    }
++
++    private static boolean testPermission(final CommandSender sender, final String permission) {
++        if (sender.hasPermission(BASE_PERM + permission) || sender.hasPermission("bukkit.command.paper")) {
++            return true;
++        }
++        sender.sendMessage(text("I'm sorry, but you do not have permission to perform this command. Please contact the server administrators if you believe that this is in error.", RED));
++        return false;
++    }
++
++    @Override
++    public List<String> tabComplete(
++        final CommandSender sender,
++        final String alias,
++        final String[] args,
++        final @Nullable Location location
++    ) throws IllegalArgumentException {
++        if (args.length <= 1) {
++            return CommandUtil.getListMatchingLast(sender, args, COMPLETABLE_SUBCOMMANDS);
++        }
++
++        final @Nullable Pair<String, PaperSubcommand> subCommand = resolveCommand(args[0]);
++        if (subCommand != null) {
++            return subCommand.second().tabComplete(sender, subCommand.first(), Arrays.copyOfRange(args, 1, args.length));
++        }
++
++        return Collections.emptyList();
++    }
++
++    @Override
++    public boolean execute(
++        final CommandSender sender,
++        final String commandLabel,
++        final String[] args
++    ) {
++        if (!testPermission(sender)) {
++            return true;
++        }
++
++        if (args.length == 0) {
++            sender.sendMessage(text("Usage: " + this.usageMessage, RED));
++            return false;
++        }
++        final @Nullable Pair<String, PaperSubcommand> subCommand = resolveCommand(args[0]);
++
++        if (subCommand == null) {
++            sender.sendMessage(text("Usage: " + this.usageMessage, RED));
++            return false;
++        }
++
++        if (!testPermission(sender, subCommand.first())) {
++            return true;
++        }
++        final String[] choppedArgs = Arrays.copyOfRange(args, 1, args.length);
++        return subCommand.second().execute(sender, subCommand.first(), choppedArgs);
++    }
++
++    private static @Nullable Pair<String, PaperSubcommand> resolveCommand(String label) {
++        label = label.toLowerCase(Locale.ENGLISH);
++        @Nullable PaperSubcommand subCommand = SUBCOMMANDS.get(label);
++        if (subCommand == null) {
++            final @Nullable String command = ALIASES.get(label);
++            if (command != null) {
++                label = command;
++                subCommand = SUBCOMMANDS.get(command);
++            }
++        }
++
++        if (subCommand != null) {
++            return Pair.of(label, subCommand);
++        }
++
++        return null;
++    }
++}
+diff --git a/src/main/java/io/papermc/paper/command/PaperCommands.java b/src/main/java/io/papermc/paper/command/PaperCommands.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..5e5ec700a368cfdaa1ea0b3f0fa82089895d4b92
+--- /dev/null
++++ b/src/main/java/io/papermc/paper/command/PaperCommands.java
+@@ -0,0 +1,28 @@
++package io.papermc.paper.command;
++
++import net.minecraft.server.MinecraftServer;
++import org.bukkit.command.Command;
++
++import java.util.HashMap;
++import java.util.Map;
++import org.checkerframework.checker.nullness.qual.NonNull;
++import org.checkerframework.framework.qual.DefaultQualifier;
++
++@DefaultQualifier(NonNull.class)
++public final class PaperCommands {
++
++    private PaperCommands() {
++    }
++
++    private static final Map<String, Command> COMMANDS = new HashMap<>();
++    static {
++        COMMANDS.put("paper", new PaperCommand("paper"));
++        COMMANDS.put("callback", new CallbackCommand("callback"));
++    }
++
++    public static void registerCommands(final MinecraftServer server) {
++        COMMANDS.forEach((s, command) -> {
++            server.server.getCommandMap().register(s, "Paper", command);
++        });
++    }
++}
+diff --git a/src/main/java/io/papermc/paper/command/PaperSubcommand.java b/src/main/java/io/papermc/paper/command/PaperSubcommand.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..7e9e0ff8639be135bf8575e375cbada5b57164e1
+--- /dev/null
++++ b/src/main/java/io/papermc/paper/command/PaperSubcommand.java
+@@ -0,0 +1,20 @@
++package io.papermc.paper.command;
++
++import java.util.Collections;
++import java.util.List;
++import org.bukkit.command.CommandSender;
++import org.checkerframework.checker.nullness.qual.NonNull;
++import org.checkerframework.framework.qual.DefaultQualifier;
++
++@DefaultQualifier(NonNull.class)
++public interface PaperSubcommand {
++    boolean execute(CommandSender sender, String subCommand, String[] args);
++
++    default List<String> tabComplete(final CommandSender sender, final String subCommand, final String[] args) {
++        return Collections.emptyList();
++    }
++
++    default boolean tabCompletes() {
++        return true;
++    }
++}
+diff --git a/src/main/java/io/papermc/paper/command/subcommands/EntityCommand.java b/src/main/java/io/papermc/paper/command/subcommands/EntityCommand.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..ff99336e0b8131ae161cfa5c4fc83c6905e3dbc8
+--- /dev/null
++++ b/src/main/java/io/papermc/paper/command/subcommands/EntityCommand.java
+@@ -0,0 +1,158 @@
++package io.papermc.paper.command.subcommands;
++
++import com.google.common.collect.Maps;
++import io.papermc.paper.command.CommandUtil;
++import io.papermc.paper.command.PaperSubcommand;
++import java.util.Collections;
++import java.util.List;
++import java.util.Locale;
++import java.util.Map;
++import java.util.Set;
++import java.util.stream.Collectors;
++
++import net.kyori.adventure.text.Component;
++import net.kyori.adventure.text.event.ClickEvent;
++import net.kyori.adventure.text.event.HoverEvent;
++import net.minecraft.core.registries.BuiltInRegistries;
++import net.minecraft.resources.ResourceLocation;
++import net.minecraft.server.level.ServerChunkCache;
++import net.minecraft.server.level.ServerLevel;
++import net.minecraft.world.entity.EntityType;
++import net.minecraft.world.level.ChunkPos;
++import org.apache.commons.lang3.tuple.MutablePair;
++import org.apache.commons.lang3.tuple.Pair;
++import org.bukkit.Bukkit;
++import org.bukkit.HeightMap;
++import org.bukkit.World;
++import org.bukkit.command.CommandSender;
++import org.bukkit.craftbukkit.CraftWorld;
++import org.bukkit.entity.Player;
++import org.checkerframework.checker.nullness.qual.NonNull;
++import org.checkerframework.checker.nullness.qual.Nullable;
++import org.checkerframework.framework.qual.DefaultQualifier;
++
++import static net.kyori.adventure.text.Component.text;
++import static net.kyori.adventure.text.format.NamedTextColor.GREEN;
++import static net.kyori.adventure.text.format.NamedTextColor.RED;
++
++@DefaultQualifier(NonNull.class)
++public final class EntityCommand implements PaperSubcommand {
++    @Override
++    public boolean execute(final CommandSender sender, final String subCommand, final String[] args) {
++        this.listEntities(sender, args);
++        return true;
++    }
++
++    @Override
++    public List<String> tabComplete(final CommandSender sender, final String subCommand, final String[] args) {
++        if (args.length == 1) {
++            return CommandUtil.getListMatchingLast(sender, args, "help", "list");
++        } else if (args.length == 2) {
++            return CommandUtil.getListMatchingLast(sender, args, BuiltInRegistries.ENTITY_TYPE.keySet().stream().map(ResourceLocation::toString).sorted().toArray(String[]::new));
++        }
++        return Collections.emptyList();
++    }
++
++    /*
++     * Ported from MinecraftForge - author: LexManos <LexManos@gmail.com> - License: LGPLv2.1
++     */
++    private void listEntities(final CommandSender sender, final String[] args) {
++        // help
++        if (args.length < 1 || !args[0].toLowerCase(Locale.ENGLISH).equals("list")) {
++            sender.sendMessage(text("Use /paper entity [list] help for more information on a specific command", RED));
++            return;
++        }
++
++        if ("list".equals(args[0].toLowerCase(Locale.ENGLISH))) {
++            String filter = "*";
++            if (args.length > 1) {
++                if (args[1].toLowerCase(Locale.ENGLISH).equals("help")) {
++                    sender.sendMessage(text("Use /paper entity list [filter] [worldName] to get entity info that matches the optional filter.", RED));
++                    return;
++                }
++                filter = args[1];
++            }
++            final String cleanfilter = filter.replace("?", ".?").replace("*", ".*?");
++            Set<ResourceLocation> names = BuiltInRegistries.ENTITY_TYPE.keySet().stream()
++                .filter(n -> n.toString().matches(cleanfilter))
++                .collect(Collectors.toSet());
++            if (names.isEmpty()) {
++                sender.sendMessage(text("Invalid filter, does not match any entities. Use /paper entity list for a proper list", RED));
++                sender.sendMessage(text("Usage: /paper entity list [filter] [worldName]", RED));
++                return;
++            }
++            String worldName;
++            if (args.length > 2) {
++                worldName = args[2];
++            } else if (sender instanceof Player) {
++                worldName = ((Player) sender).getWorld().getName();
++            } else {
++                sender.sendMessage(text("Please specify the name of a world", RED));
++                sender.sendMessage(text("To do so without a filter, specify '*' as the filter", RED));
++                sender.sendMessage(text("Usage: /paper entity list [filter] [worldName]", RED));
++                return;
++            }
++            Map<ResourceLocation, MutablePair<Integer, Map<ChunkPos, Integer>>> list = Maps.newHashMap();
++            @Nullable World bukkitWorld = Bukkit.getWorld(worldName);
++            if (bukkitWorld == null) {
++                sender.sendMessage(text("Could not load world for " + worldName + ". Please select a valid world.", RED));
++                sender.sendMessage(text("Usage: /paper entity list [filter] [worldName]", RED));
++                return;
++            }
++            ServerLevel world = ((CraftWorld) bukkitWorld).getHandle();
++            Map<ResourceLocation, Integer> nonEntityTicking = Maps.newHashMap();
++            ServerChunkCache chunkProviderServer = world.getChunkSource();
++            world.getAllEntities().forEach(e -> {
++                ResourceLocation key = EntityType.getKey(e.getType());
++
++                MutablePair<Integer, Map<ChunkPos, Integer>> info = list.computeIfAbsent(key, k -> MutablePair.of(0, Maps.newHashMap()));
++                ChunkPos chunk = e.chunkPosition();
++                info.left++;
++                info.right.put(chunk, info.right.getOrDefault(chunk, 0) + 1);
++                if (!chunkProviderServer.isPositionTicking(e)) {
++                    nonEntityTicking.merge(key, 1, Integer::sum);
++                }
++            });
++            if (names.size() == 1) {
++                ResourceLocation name = names.iterator().next();
++                Pair<Integer, Map<ChunkPos, Integer>> info = list.get(name);
++                int nonTicking = nonEntityTicking.getOrDefault(name, 0);
++                if (info == null) {
++                    sender.sendMessage(text("No entities found.", RED));
++                    return;
++                }
++                sender.sendMessage("Entity: " + name + " Total Ticking: " + (info.getLeft() - nonTicking) + ", Total Non-Ticking: " + nonTicking);
++                info.getRight().entrySet().stream()
++                    .sorted((a, b) -> !a.getValue().equals(b.getValue()) ? b.getValue() - a.getValue() : a.getKey().toString().compareTo(b.getKey().toString()))
++                    .limit(10).forEach(e -> {
++                        final int x = (e.getKey().x << 4) + 8;
++                        final int z = (e.getKey().z << 4) + 8;
++                        final Component message = text("  " + e.getValue() + ": " + e.getKey().x + ", " + e.getKey().z + (chunkProviderServer.isPositionTicking(e.getKey().toLong()) ? " (Ticking)" : " (Non-Ticking)"))
++                            .hoverEvent(HoverEvent.showText(text("Click to teleport to chunk", GREEN)))
++                            .clickEvent(ClickEvent.clickEvent(ClickEvent.Action.RUN_COMMAND, "/minecraft:execute as @s in " + world.getWorld().getKey() + " run tp " + x + " " + (world.getWorld().getHighestBlockYAt(x, z, HeightMap.MOTION_BLOCKING) + 1) + " " + z));
++                        sender.sendMessage(message);
++                    });
++            } else {
++                List<Pair<ResourceLocation, Integer>> info = list.entrySet().stream()
++                    .filter(e -> names.contains(e.getKey()))
++                    .map(e -> Pair.of(e.getKey(), e.getValue().left))
++                    .sorted((a, b) -> !a.getRight().equals(b.getRight()) ? b.getRight() - a.getRight() : a.getKey().toString().compareTo(b.getKey().toString()))
++                    .toList();
++
++                if (info.isEmpty()) {
++                    sender.sendMessage(text("No entities found.", RED));
++                    return;
++                }
++
++                int count = info.stream().mapToInt(Pair::getRight).sum();
++                int nonTickingCount = nonEntityTicking.values().stream().mapToInt(Integer::intValue).sum();
++                sender.sendMessage("Total Ticking: " + (count - nonTickingCount) + ", Total Non-Ticking: " + nonTickingCount);
++                info.forEach(e -> {
++                    int nonTicking = nonEntityTicking.getOrDefault(e.getKey(), 0);
++                    sender.sendMessage("  " + (e.getValue() - nonTicking) + " (" + nonTicking + ") " + ": " + e.getKey());
++                });
++                sender.sendMessage("* First number is ticking entities, second number is non-ticking entities");
++            }
++        }
++    }
++}
+diff --git a/src/main/java/io/papermc/paper/command/subcommands/HeapDumpCommand.java b/src/main/java/io/papermc/paper/command/subcommands/HeapDumpCommand.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..cd2e4d792e972b8bf1e07b8961594a670ae949cf
+--- /dev/null
++++ b/src/main/java/io/papermc/paper/command/subcommands/HeapDumpCommand.java
+@@ -0,0 +1,38 @@
++package io.papermc.paper.command.subcommands;
++
++import io.papermc.paper.command.PaperSubcommand;
++import java.time.LocalDateTime;
++import java.time.format.DateTimeFormatter;
++import org.bukkit.command.Command;
++import org.bukkit.command.CommandSender;
++import org.bukkit.craftbukkit.CraftServer;
++import org.checkerframework.checker.nullness.qual.NonNull;
++import org.checkerframework.framework.qual.DefaultQualifier;
++
++import static net.kyori.adventure.text.Component.text;
++import static net.kyori.adventure.text.format.NamedTextColor.GREEN;
++import static net.kyori.adventure.text.format.NamedTextColor.RED;
++import static net.kyori.adventure.text.format.NamedTextColor.YELLOW;
++
++@DefaultQualifier(NonNull.class)
++public final class HeapDumpCommand implements PaperSubcommand {
++    @Override
++    public boolean execute(final CommandSender sender, final String subCommand, final String[] args) {
++        this.dumpHeap(sender);
++        return true;
++    }
++
++    private void dumpHeap(final CommandSender sender) {
++        java.nio.file.Path dir = java.nio.file.Paths.get("./dumps");
++        String name = "heap-dump-" + DateTimeFormatter.ofPattern("yyyy-MM-dd_HH.mm.ss").format(LocalDateTime.now());
++
++        Command.broadcastCommandMessage(sender, text("Writing JVM heap data...", YELLOW));
++
++        java.nio.file.Path file = CraftServer.dumpHeap(dir, name);
++        if (file != null) {
++            Command.broadcastCommandMessage(sender, text("Heap dump saved to " + file, GREEN));
++        } else {
++            Command.broadcastCommandMessage(sender, text("Failed to write heap dump, see server log for details", RED));
++        }
++    }
++}
+diff --git a/src/main/java/io/papermc/paper/command/subcommands/ReloadCommand.java b/src/main/java/io/papermc/paper/command/subcommands/ReloadCommand.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..bd68139ae635f2ad7ec8e7a21e0056a139c4c62e
+--- /dev/null
++++ b/src/main/java/io/papermc/paper/command/subcommands/ReloadCommand.java
+@@ -0,0 +1,33 @@
++package io.papermc.paper.command.subcommands;
++
++import io.papermc.paper.command.PaperSubcommand;
++import net.minecraft.server.MinecraftServer;
++import org.bukkit.command.Command;
++import org.bukkit.command.CommandSender;
++import org.bukkit.craftbukkit.CraftServer;
++import org.checkerframework.checker.nullness.qual.NonNull;
++import org.checkerframework.framework.qual.DefaultQualifier;
++
++import static net.kyori.adventure.text.Component.text;
++import static net.kyori.adventure.text.format.NamedTextColor.GREEN;
++import static net.kyori.adventure.text.format.NamedTextColor.RED;
++
++@DefaultQualifier(NonNull.class)
++public final class ReloadCommand implements PaperSubcommand {
++    @Override
++    public boolean execute(final CommandSender sender, final String subCommand, final String[] args) {
++        this.doReload(sender);
++        return true;
++    }
++
++    private void doReload(final CommandSender sender) {
++        Command.broadcastCommandMessage(sender, text("Please note that this command is not supported and may cause issues.", RED));
++        Command.broadcastCommandMessage(sender, text("If you encounter any issues please use the /stop command to restart your server.", RED));
++
++        MinecraftServer server = ((CraftServer) sender.getServer()).getServer();
++        server.paperConfigurations.reloadConfigs(server);
++        server.server.reloadCount++;
++
++        Command.broadcastCommandMessage(sender, text("Paper config reload complete.", GREEN));
++    }
++}
+diff --git a/src/main/java/io/papermc/paper/command/subcommands/VersionCommand.java b/src/main/java/io/papermc/paper/command/subcommands/VersionCommand.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..ae60bd96b5284d54676d8e7e4dd5d170b526ec1e
+--- /dev/null
++++ b/src/main/java/io/papermc/paper/command/subcommands/VersionCommand.java
+@@ -0,0 +1,21 @@
++package io.papermc.paper.command.subcommands;
++
++import io.papermc.paper.command.PaperSubcommand;
++import net.minecraft.server.MinecraftServer;
++import org.bukkit.command.Command;
++import org.bukkit.command.CommandSender;
++import org.checkerframework.checker.nullness.qual.NonNull;
++import org.checkerframework.checker.nullness.qual.Nullable;
++import org.checkerframework.framework.qual.DefaultQualifier;
++
++@DefaultQualifier(NonNull.class)
++public final class VersionCommand implements PaperSubcommand {
++    @Override
++    public boolean execute(final CommandSender sender, final String subCommand, final String[] args) {
++        final @Nullable Command ver = MinecraftServer.getServer().server.getCommandMap().getCommand("version");
++        if (ver != null) {
++            ver.execute(sender, "paper", new String[0]);
++        }
++        return true;
++    }
++}
+diff --git a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
+index 546ad678af2705e3956f5f139aa847354a6fdeae..8bce21e0d3e4ca18dcd43f9ab61387a012a5f24f 100644
+--- a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
++++ b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
+@@ -186,6 +186,7 @@ public class DedicatedServer extends MinecraftServer implements ServerInterface
+         // Paper start
+         paperConfigurations.initializeGlobalConfiguration();
+         paperConfigurations.initializeWorldDefaultsConfiguration();
++        io.papermc.paper.command.PaperCommands.registerCommands(this);
+         // Paper end
+ 
+         this.setPvpAllowed(dedicatedserverproperties.pvp);
+diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+index 7b2fdc799b0fe776606d3890098eba58c0bdea83..c373b1929b8bd4ae5ceb899c6c5ea097a6236f8d 100644
+--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
++++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+@@ -940,6 +940,7 @@ public final class CraftServer implements Server {
+         this.commandMap.clearCommands();
+         this.reloadData();
+         org.spigotmc.SpigotConfig.registerCommands(); // Spigot
++        io.papermc.paper.command.PaperCommands.registerCommands(this.console); // Paper
+         this.overrideAllCommandBlockCommands = this.commandsConfiguration.getStringList("command-block-overrides").contains("*");
+         this.ignoreVanillaPermissions = this.commandsConfiguration.getBoolean("ignore-vanilla-permissions");
+ 
+@@ -2533,6 +2534,34 @@ public final class CraftServer implements Server {
+     // Paper end
+ 
+     // Paper start
++    @SuppressWarnings({"rawtypes", "unchecked"})
++    public static java.nio.file.Path dumpHeap(java.nio.file.Path dir, String name) {
++        try {
++            java.nio.file.Files.createDirectories(dir);
++
++            javax.management.MBeanServer server = java.lang.management.ManagementFactory.getPlatformMBeanServer();
++            java.nio.file.Path file;
++
++            try {
++                Class clazz = Class.forName("openj9.lang.management.OpenJ9DiagnosticsMXBean");
++                Object openj9Mbean = java.lang.management.ManagementFactory.newPlatformMXBeanProxy(server, "openj9.lang.management:type=OpenJ9Diagnostics", clazz);
++                java.lang.reflect.Method m = clazz.getMethod("triggerDumpToFile", String.class, String.class);
++                file = dir.resolve(name + ".phd");
++                m.invoke(openj9Mbean, "heap", file.toString());
++            } catch (ClassNotFoundException e) {
++                Class clazz = Class.forName("com.sun.management.HotSpotDiagnosticMXBean");
++                Object hotspotMBean = java.lang.management.ManagementFactory.newPlatformMXBeanProxy(server, "com.sun.management:type=HotSpotDiagnostic", clazz);
++                java.lang.reflect.Method m = clazz.getMethod("dumpHeap", String.class, boolean.class);
++                file = dir.resolve(name + ".hprof");
++                m.invoke(hotspotMBean, file.toString(), true);
++            }
++
++            return file;
++        } catch (Throwable t) {
++            Bukkit.getLogger().log(Level.SEVERE, "Could not write heap", t);
++            return null;
++        }
++    }
+     private Iterable<? extends net.kyori.adventure.audience.Audience> adventure$audiences;
+     @Override
+     public Iterable<? extends net.kyori.adventure.audience.Audience> audiences() {

patches/unapplied/server/0012-Paper-Metrics.patch

@@ -0,0 +1,731 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Zach Brown <zach.brown@destroystokyo.com>
+Date: Fri, 24 Mar 2017 23:56:01 -0500
+Subject: [PATCH] Paper Metrics
+
+Removes Spigot's mcstats metrics in favor of a system using bStats
+
+To disable for privacy or other reasons go to the bStats folder in your plugins folder
+and edit the config.yml file present there.
+
+Please keep in mind the data collected is anonymous and collection should have no
+tangible effect on server performance. The data is used to allow the authors of
+PaperMC to track version and platform usage so that we can make better management
+decisions on behalf of the project.
+
+diff --git a/src/main/java/com/destroystokyo/paper/Metrics.java b/src/main/java/com/destroystokyo/paper/Metrics.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..6aaed8e8bf8c721fc834da5c76ac72a4c3e92458
+--- /dev/null
++++ b/src/main/java/com/destroystokyo/paper/Metrics.java
+@@ -0,0 +1,678 @@
++package com.destroystokyo.paper;
++
++import net.minecraft.server.MinecraftServer;
++import org.bukkit.Bukkit;
++import org.bukkit.configuration.file.YamlConfiguration;
++import org.bukkit.craftbukkit.util.CraftMagicNumbers;
++import org.bukkit.plugin.Plugin;
++
++import org.json.simple.JSONArray;
++import org.json.simple.JSONObject;
++
++import javax.net.ssl.HttpsURLConnection;
++import java.io.ByteArrayOutputStream;
++import java.io.DataOutputStream;
++import java.io.File;
++import java.io.IOException;
++import java.net.URL;
++import java.util.*;
++import java.util.concurrent.Callable;
++import java.util.concurrent.Executors;
++import java.util.concurrent.ScheduledExecutorService;
++import java.util.concurrent.TimeUnit;
++import java.util.logging.Level;
++import java.util.logging.Logger;
++import java.util.regex.Matcher;
++import java.util.regex.Pattern;
++import java.util.zip.GZIPOutputStream;
++
++/**
++ * bStats collects some data for plugin authors.
++ *
++ * Check out https://bStats.org/ to learn more about bStats!
++ */
++public class Metrics {
++
++    // Executor service for requests
++    // We use an executor service because the Bukkit scheduler is affected by server lags
++    private final ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(1);
++
++    // The version of this bStats class
++    public static final int B_STATS_VERSION = 1;
++
++    // The url to which the data is sent
++    private static final String URL = "https://bStats.org/submitData/server-implementation";
++
++    // Should failed requests be logged?
++    private static boolean logFailedRequests = false;
++
++    // The logger for the failed requests
++    private static Logger logger = Logger.getLogger("bStats");
++
++    // The name of the server software
++    private final String name;
++
++    // The uuid of the server
++    private final String serverUUID;
++
++    // A list with all custom charts
++    private final List<CustomChart> charts = new ArrayList<>();
++
++    /**
++     * Class constructor.
++     *
++     * @param name              The name of the server software.
++     * @param serverUUID        The uuid of the server.
++     * @param logFailedRequests Whether failed requests should be logged or not.
++     * @param logger            The logger for the failed requests.
++     */
++    public Metrics(String name, String serverUUID, boolean logFailedRequests, Logger logger) {
++        this.name = name;
++        this.serverUUID = serverUUID;
++        Metrics.logFailedRequests = logFailedRequests;
++        Metrics.logger = logger;
++
++        // Start submitting the data
++        startSubmitting();
++    }
++
++    /**
++     * Adds a custom chart.
++     *
++     * @param chart The chart to add.
++     */
++    public void addCustomChart(CustomChart chart) {
++        if (chart == null) {
++            throw new IllegalArgumentException("Chart cannot be null!");
++        }
++        charts.add(chart);
++    }
++
++    /**
++     * Starts the Scheduler which submits our data every 30 minutes.
++     */
++    private void startSubmitting() {
++        final Runnable submitTask = this::submitData;
++
++        // Many servers tend to restart at a fixed time at xx:00 which causes an uneven distribution of requests on the
++        // bStats backend. To circumvent this problem, we introduce some randomness into the initial and second delay.
++        // WARNING: You must not modify any part of this Metrics class, including the submit delay or frequency!
++        // WARNING: Modifying this code will get your plugin banned on bStats. Just don't do it!
++        long initialDelay = (long) (1000 * 60 * (3 + Math.random() * 3));
++        long secondDelay = (long) (1000 * 60 * (Math.random() * 30));
++        scheduler.schedule(submitTask, initialDelay, TimeUnit.MILLISECONDS);
++        scheduler.scheduleAtFixedRate(submitTask, initialDelay + secondDelay, 1000 * 60 * 30, TimeUnit.MILLISECONDS);
++    }
++
++    /**
++     * Gets the plugin specific data.
++     *
++     * @return The plugin specific data.
++     */
++    private JSONObject getPluginData() {
++        JSONObject data = new JSONObject();
++
++        data.put("pluginName", name); // Append the name of the server software
++        JSONArray customCharts = new JSONArray();
++        for (CustomChart customChart : charts) {
++            // Add the data of the custom charts
++            JSONObject chart = customChart.getRequestJsonObject();
++            if (chart == null) { // If the chart is null, we skip it
++                continue;
++            }
++            customCharts.add(chart);
++        }
++        data.put("customCharts", customCharts);
++
++        return data;
++    }
++
++    /**
++     * Gets the server specific data.
++     *
++     * @return The server specific data.
++     */
++    private JSONObject getServerData() {
++        // OS specific data
++        String osName = System.getProperty("os.name");
++        String osArch = System.getProperty("os.arch");
++        String osVersion = System.getProperty("os.version");
++        int coreCount = Runtime.getRuntime().availableProcessors();
++
++        JSONObject data = new JSONObject();
++
++        data.put("serverUUID", serverUUID);
++
++        data.put("osName", osName);
++        data.put("osArch", osArch);
++        data.put("osVersion", osVersion);
++        data.put("coreCount", coreCount);
++
++        return data;
++    }
++
++    /**
++     * Collects the data and sends it afterwards.
++     */
++    private void submitData() {
++        final JSONObject data = getServerData();
++
++        JSONArray pluginData = new JSONArray();
++        pluginData.add(getPluginData());
++        data.put("plugins", pluginData);
++
++        try {
++            // We are still in the Thread of the timer, so nothing get blocked :)
++            sendData(data);
++        } catch (Exception e) {
++            // Something went wrong! :(
++            if (logFailedRequests) {
++                logger.log(Level.WARNING, "Could not submit stats of " + name, e);
++            }
++        }
++    }
++
++    /**
++     * Sends the data to the bStats server.
++     *
++     * @param data The data to send.
++     * @throws Exception If the request failed.
++     */
++    private static void sendData(JSONObject data) throws Exception {
++        if (data == null) {
++            throw new IllegalArgumentException("Data cannot be null!");
++        }
++        HttpsURLConnection connection = (HttpsURLConnection) new URL(URL).openConnection();
++
++        // Compress the data to save bandwidth
++        byte[] compressedData = compress(data.toString());
++
++        // Add headers
++        connection.setRequestMethod("POST");
++        connection.addRequestProperty("Accept", "application/json");
++        connection.addRequestProperty("Connection", "close");
++        connection.addRequestProperty("Content-Encoding", "gzip"); // We gzip our request
++        connection.addRequestProperty("Content-Length", String.valueOf(compressedData.length));
++        connection.setRequestProperty("Content-Type", "application/json"); // We send our data in JSON format
++        connection.setRequestProperty("User-Agent", "MC-Server/" + B_STATS_VERSION);
++
++        // Send data
++        connection.setDoOutput(true);
++        DataOutputStream outputStream = new DataOutputStream(connection.getOutputStream());
++        outputStream.write(compressedData);
++        outputStream.flush();
++        outputStream.close();
++
++        connection.getInputStream().close(); // We don't care about the response - Just send our data :)
++    }
++
++    /**
++     * Gzips the given String.
++     *
++     * @param str The string to gzip.
++     * @return The gzipped String.
++     * @throws IOException If the compression failed.
++     */
++    private static byte[] compress(final String str) throws IOException {
++        if (str == null) {
++            return null;
++        }
++        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
++        GZIPOutputStream gzip = new GZIPOutputStream(outputStream);
++        gzip.write(str.getBytes("UTF-8"));
++        gzip.close();
++        return outputStream.toByteArray();
++    }
++
++    /**
++     * Represents a custom chart.
++     */
++    public static abstract class CustomChart {
++
++        // The id of the chart
++        final String chartId;
++
++        /**
++         * Class constructor.
++         *
++         * @param chartId The id of the chart.
++         */
++        CustomChart(String chartId) {
++            if (chartId == null || chartId.isEmpty()) {
++                throw new IllegalArgumentException("ChartId cannot be null or empty!");
++            }
++            this.chartId = chartId;
++        }
++
++        private JSONObject getRequestJsonObject() {
++            JSONObject chart = new JSONObject();
++            chart.put("chartId", chartId);
++            try {
++                JSONObject data = getChartData();
++                if (data == null) {
++                    // If the data is null we don't send the chart.
++                    return null;
++                }
++                chart.put("data", data);
++            } catch (Throwable t) {
++                if (logFailedRequests) {
++                    logger.log(Level.WARNING, "Failed to get data for custom chart with id " + chartId, t);
++                }
++                return null;
++            }
++            return chart;
++        }
++
++        protected abstract JSONObject getChartData() throws Exception;
++
++    }
++
++    /**
++     * Represents a custom simple pie.
++     */
++    public static class SimplePie extends CustomChart {
++
++        private final Callable<String> callable;
++
++        /**
++         * Class constructor.
++         *
++         * @param chartId  The id of the chart.
++         * @param callable The callable which is used to request the chart data.
++         */
++        public SimplePie(String chartId, Callable<String> callable) {
++            super(chartId);
++            this.callable = callable;
++        }
++
++        @Override
++        protected JSONObject getChartData() throws Exception {
++            JSONObject data = new JSONObject();
++            String value = callable.call();
++            if (value == null || value.isEmpty()) {
++                // Null = skip the chart
++                return null;
++            }
++            data.put("value", value);
++            return data;
++        }
++    }
++
++    /**
++     * Represents a custom advanced pie.
++     */
++    public static class AdvancedPie extends CustomChart {
++
++        private final Callable<Map<String, Integer>> callable;
++
++        /**
++         * Class constructor.
++         *
++         * @param chartId  The id of the chart.
++         * @param callable The callable which is used to request the chart data.
++         */
++        public AdvancedPie(String chartId, Callable<Map<String, Integer>> callable) {
++            super(chartId);
++            this.callable = callable;
++        }
++
++        @Override
++        protected JSONObject getChartData() throws Exception {
++            JSONObject data = new JSONObject();
++            JSONObject values = new JSONObject();
++            Map<String, Integer> map = callable.call();
++            if (map == null || map.isEmpty()) {
++                // Null = skip the chart
++                return null;
++            }
++            boolean allSkipped = true;
++            for (Map.Entry<String, Integer> entry : map.entrySet()) {
++                if (entry.getValue() == 0) {
++                    continue; // Skip this invalid
++                }
++                allSkipped = false;
++                values.put(entry.getKey(), entry.getValue());
++            }
++            if (allSkipped) {
++                // Null = skip the chart
++                return null;
++            }
++            data.put("values", values);
++            return data;
++        }
++    }
++
++    /**
++     * Represents a custom drilldown pie.
++     */
++    public static class DrilldownPie extends CustomChart {
++
++        private final Callable<Map<String, Map<String, Integer>>> callable;
++
++        /**
++         * Class constructor.
++         *
++         * @param chartId  The id of the chart.
++         * @param callable The callable which is used to request the chart data.
++         */
++        public DrilldownPie(String chartId, Callable<Map<String, Map<String, Integer>>> callable) {
++            super(chartId);
++            this.callable = callable;
++        }
++
++        @Override
++        public JSONObject getChartData() throws Exception {
++            JSONObject data = new JSONObject();
++            JSONObject values = new JSONObject();
++            Map<String, Map<String, Integer>> map = callable.call();
++            if (map == null || map.isEmpty()) {
++                // Null = skip the chart
++                return null;
++            }
++            boolean reallyAllSkipped = true;
++            for (Map.Entry<String, Map<String, Integer>> entryValues : map.entrySet()) {
++                JSONObject value = new JSONObject();
++                boolean allSkipped = true;
++                for (Map.Entry<String, Integer> valueEntry : map.get(entryValues.getKey()).entrySet()) {
++                    value.put(valueEntry.getKey(), valueEntry.getValue());
++                    allSkipped = false;
++                }
++                if (!allSkipped) {
++                    reallyAllSkipped = false;
++                    values.put(entryValues.getKey(), value);
++                }
++            }
++            if (reallyAllSkipped) {
++                // Null = skip the chart
++                return null;
++            }
++            data.put("values", values);
++            return data;
++        }
++    }
++
++    /**
++     * Represents a custom single line chart.
++     */
++    public static class SingleLineChart extends CustomChart {
++
++        private final Callable<Integer> callable;
++
++        /**
++         * Class constructor.
++         *
++         * @param chartId  The id of the chart.
++         * @param callable The callable which is used to request the chart data.
++         */
++        public SingleLineChart(String chartId, Callable<Integer> callable) {
++            super(chartId);
++            this.callable = callable;
++        }
++
++        @Override
++        protected JSONObject getChartData() throws Exception {
++            JSONObject data = new JSONObject();
++            int value = callable.call();
++            if (value == 0) {
++                // Null = skip the chart
++                return null;
++            }
++            data.put("value", value);
++            return data;
++        }
++
++    }
++
++    /**
++     * Represents a custom multi line chart.
++     */
++    public static class MultiLineChart extends CustomChart {
++
++        private final Callable<Map<String, Integer>> callable;
++
++        /**
++         * Class constructor.
++         *
++         * @param chartId  The id of the chart.
++         * @param callable The callable which is used to request the chart data.
++         */
++        public MultiLineChart(String chartId, Callable<Map<String, Integer>> callable) {
++            super(chartId);
++            this.callable = callable;
++        }
++
++        @Override
++        protected JSONObject getChartData() throws Exception {
++            JSONObject data = new JSONObject();
++            JSONObject values = new JSONObject();
++            Map<String, Integer> map = callable.call();
++            if (map == null || map.isEmpty()) {
++                // Null = skip the chart
++                return null;
++            }
++            boolean allSkipped = true;
++            for (Map.Entry<String, Integer> entry : map.entrySet()) {
++                if (entry.getValue() == 0) {
++                    continue; // Skip this invalid
++                }
++                allSkipped = false;
++                values.put(entry.getKey(), entry.getValue());
++            }
++            if (allSkipped) {
++                // Null = skip the chart
++                return null;
++            }
++            data.put("values", values);
++            return data;
++        }
++
++    }
++
++    /**
++     * Represents a custom simple bar chart.
++     */
++    public static class SimpleBarChart extends CustomChart {
++
++        private final Callable<Map<String, Integer>> callable;
++
++        /**
++         * Class constructor.
++         *
++         * @param chartId  The id of the chart.
++         * @param callable The callable which is used to request the chart data.
++         */
++        public SimpleBarChart(String chartId, Callable<Map<String, Integer>> callable) {
++            super(chartId);
++            this.callable = callable;
++        }
++
++        @Override
++        protected JSONObject getChartData() throws Exception {
++            JSONObject data = new JSONObject();
++            JSONObject values = new JSONObject();
++            Map<String, Integer> map = callable.call();
++            if (map == null || map.isEmpty()) {
++                // Null = skip the chart
++                return null;
++            }
++            for (Map.Entry<String, Integer> entry : map.entrySet()) {
++                JSONArray categoryValues = new JSONArray();
++                categoryValues.add(entry.getValue());
++                values.put(entry.getKey(), categoryValues);
++            }
++            data.put("values", values);
++            return data;
++        }
++
++    }
++
++    /**
++     * Represents a custom advanced bar chart.
++     */
++    public static class AdvancedBarChart extends CustomChart {
++
++        private final Callable<Map<String, int[]>> callable;
++
++        /**
++         * Class constructor.
++         *
++         * @param chartId  The id of the chart.
++         * @param callable The callable which is used to request the chart data.
++         */
++        public AdvancedBarChart(String chartId, Callable<Map<String, int[]>> callable) {
++            super(chartId);
++            this.callable = callable;
++        }
++
++        @Override
++        protected JSONObject getChartData() throws Exception {
++            JSONObject data = new JSONObject();
++            JSONObject values = new JSONObject();
++            Map<String, int[]> map = callable.call();
++            if (map == null || map.isEmpty()) {
++                // Null = skip the chart
++                return null;
++            }
++            boolean allSkipped = true;
++            for (Map.Entry<String, int[]> entry : map.entrySet()) {
++                if (entry.getValue().length == 0) {
++                    continue; // Skip this invalid
++                }
++                allSkipped = false;
++                JSONArray categoryValues = new JSONArray();
++                for (int categoryValue : entry.getValue()) {
++                    categoryValues.add(categoryValue);
++                }
++                values.put(entry.getKey(), categoryValues);
++            }
++            if (allSkipped) {
++                // Null = skip the chart
++                return null;
++            }
++            data.put("values", values);
++            return data;
++        }
++
++    }
++
++    public static class PaperMetrics {
++        public static void startMetrics() {
++            // Get the config file
++            File configFile = new File(new File((File) MinecraftServer.getServer().options.valueOf("plugins"), "bStats"), "config.yml");
++            YamlConfiguration config = YamlConfiguration.loadConfiguration(configFile);
++
++            // Check if the config file exists
++            if (!config.isSet("serverUuid")) {
++
++                // Add default values
++                config.addDefault("enabled", true);
++                // Every server gets it's unique random id.
++                config.addDefault("serverUuid", UUID.randomUUID().toString());
++                // Should failed request be logged?
++                config.addDefault("logFailedRequests", false);
++
++                // Inform the server owners about bStats
++                config.options().header(
++                        "bStats collects some data for plugin authors like how many servers are using their plugins.\n" +
++                                "To honor their work, you should not disable it.\n" +
++                                "This has nearly no effect on the server performance!\n" +
++                                "Check out https://bStats.org/ to learn more :)"
++                ).copyDefaults(true);
++                try {
++                    config.save(configFile);
++                } catch (IOException ignored) {
++                }
++            }
++            // Load the data
++            String serverUUID = config.getString("serverUuid");
++            boolean logFailedRequests = config.getBoolean("logFailedRequests", false);
++            // Only start Metrics, if it's enabled in the config
++            if (config.getBoolean("enabled", true)) {
++                Metrics metrics = new Metrics("Paper", serverUUID, logFailedRequests, Bukkit.getLogger());
++
++                metrics.addCustomChart(new Metrics.SimplePie("minecraft_version", () -> {
++                    String minecraftVersion = Bukkit.getVersion();
++                    minecraftVersion = minecraftVersion.substring(minecraftVersion.indexOf("MC: ") + 4, minecraftVersion.length() - 1);
++                    return minecraftVersion;
++                }));
++
++                metrics.addCustomChart(new Metrics.SingleLineChart("players", () -> Bukkit.getOnlinePlayers().size()));
++                metrics.addCustomChart(new Metrics.SimplePie("online_mode", () -> Bukkit.getOnlineMode() ? "online" : "offline"));
++                final String paperVersion;
++                final String implVersion = org.bukkit.craftbukkit.Main.class.getPackage().getImplementationVersion();
++                if (implVersion != null) {
++                    final String buildOrHash = implVersion.substring(implVersion.lastIndexOf('-') + 1);
++                    paperVersion = "git-Paper-%s-%s".formatted(Bukkit.getServer().getMinecraftVersion(), buildOrHash);
++                } else {
++                    paperVersion = "unknown";
++                }
++                metrics.addCustomChart(new Metrics.SimplePie("paper_version", () -> paperVersion));
++
++                metrics.addCustomChart(new Metrics.DrilldownPie("java_version", () -> {
++                    Map<String, Map<String, Integer>> map = new HashMap<>();
++                    String javaVersion = System.getProperty("java.version");
++                    Map<String, Integer> entry = new HashMap<>();
++                    entry.put(javaVersion, 1);
++
++                    // http://openjdk.java.net/jeps/223
++                    // Java decided to change their versioning scheme and in doing so modified the java.version system
++                    // property to return $major[.$minor][.$secuity][-ea], as opposed to 1.$major.0_$identifier
++                    // we can handle pre-9 by checking if the "major" is equal to "1", otherwise, 9+
++                    String majorVersion = javaVersion.split("\\.")[0];
++                    String release;
++
++                    int indexOf = javaVersion.lastIndexOf('.');
++
++                    if (majorVersion.equals("1")) {
++                        release = "Java " + javaVersion.substring(0, indexOf);
++                    } else {
++                        // of course, it really wouldn't be all that simple if they didn't add a quirk, now would it
++                        // valid strings for the major may potentially include values such as -ea to deannotate a pre release
++                        Matcher versionMatcher = Pattern.compile("\\d+").matcher(majorVersion);
++                        if (versionMatcher.find()) {
++                            majorVersion = versionMatcher.group(0);
++                        }
++                        release = "Java " + majorVersion;
++                    }
++                    map.put(release, entry);
++
++                    return map;
++                }));
++
++                metrics.addCustomChart(new Metrics.DrilldownPie("legacy_plugins", () -> {
++                    Map<String, Map<String, Integer>> map = new HashMap<>();
++
++                    // count legacy plugins
++                    int legacy = 0;
++                    for (Plugin plugin : Bukkit.getPluginManager().getPlugins()) {
++                        if (CraftMagicNumbers.isLegacy(plugin.getDescription())) {
++                            legacy++;
++                        }
++                    }
++
++                    // insert real value as lower dimension
++                    Map<String, Integer> entry = new HashMap<>();
++                    entry.put(String.valueOf(legacy), 1);
++
++                    // create buckets as higher dimension
++                    if (legacy == 0) {
++                        map.put("0 \uD83D\uDE0E", entry); // :sunglasses:
++                    } else if (legacy <= 5) {
++                        map.put("1-5", entry);
++                    } else if (legacy <= 10) {
++                        map.put("6-10", entry);
++                    } else if (legacy <= 25) {
++                        map.put("11-25", entry);
++                    } else if (legacy <= 50) {
++                        map.put("26-50", entry);
++                    } else {
++                        map.put("50+ \uD83D\uDE2D", entry); // :cry:
++                    }
++
++                    return map;
++                }));
++            }
++
++        }
++    }
++}
+diff --git a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
+index a01d423f44b3e547b4fa4d6654f9df636d69525f..59eed41e1c6012650597f1faa85063a2d536873f 100644
+--- a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
++++ b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
+@@ -187,6 +187,7 @@ public class DedicatedServer extends MinecraftServer implements ServerInterface
+         paperConfigurations.initializeGlobalConfiguration();
+         paperConfigurations.initializeWorldDefaultsConfiguration();
+         io.papermc.paper.command.PaperCommands.registerCommands(this);
++        com.destroystokyo.paper.Metrics.PaperMetrics.startMetrics();
+         // Paper end
+ 
+         this.setPvpAllowed(dedicatedserverproperties.pvp);
+diff --git a/src/main/java/org/spigotmc/SpigotConfig.java b/src/main/java/org/spigotmc/SpigotConfig.java
+index 83eabc34d952bbb13ec4b4bdcf34f647189c0b46..0a0aa6de31a94a701074cc5f43c94be7515a185c 100644
+--- a/src/main/java/org/spigotmc/SpigotConfig.java
++++ b/src/main/java/org/spigotmc/SpigotConfig.java
+@@ -83,6 +83,7 @@ public class SpigotConfig
+             MinecraftServer.getServer().server.getCommandMap().register( entry.getKey(), "Spigot", entry.getValue() );
+         }
+ 
++        /* // Paper - Replace with our own
+         if ( SpigotConfig.metrics == null )
+         {
+             try
+@@ -94,6 +95,7 @@ public class SpigotConfig
+                 Bukkit.getServer().getLogger().log( Level.SEVERE, "Could not start metrics service", ex );
+             }
+         }
++        */ // Paper end
+     }
+ 
+     public static void readConfig(Class<?> clazz, Object instance) // Paper - package-private -> public

patches/unapplied/server/0017-Add-TickThread.patch

@@ -0,0 +1,105 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Spottedleaf <Spottedleaf@users.noreply.github.com>
+Date: Sun, 3 Mar 2019 20:53:18 -0800
+Subject: [PATCH] Add TickThread
+
+Placeholder patch, to be used by chunksystem rewrite
+
+diff --git a/src/main/java/io/papermc/paper/util/TickThread.java b/src/main/java/io/papermc/paper/util/TickThread.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..d59885ee9c8b29d5bac34dce0597e345e5358c77
+--- /dev/null
++++ b/src/main/java/io/papermc/paper/util/TickThread.java
+@@ -0,0 +1,79 @@
++package io.papermc.paper.util;
++
++import net.minecraft.server.MinecraftServer;
++import net.minecraft.server.level.ServerLevel;
++import net.minecraft.world.entity.Entity;
++import org.bukkit.Bukkit;
++import java.util.concurrent.atomic.AtomicInteger;
++
++public final class TickThread extends Thread {
++
++    public static final boolean STRICT_THREAD_CHECKS = Boolean.getBoolean("paper.strict-thread-checks");
++
++    static {
++        if (STRICT_THREAD_CHECKS) {
++            MinecraftServer.LOGGER.warn("Strict thread checks enabled - performance may suffer");
++        }
++    }
++
++    public static void softEnsureTickThread(final String reason) {
++        if (!STRICT_THREAD_CHECKS) {
++            return;
++        }
++        ensureTickThread(reason);
++    }
++
++    public static void ensureTickThread(final String reason) {
++        if (!isTickThread()) {
++            MinecraftServer.LOGGER.error("Thread " + Thread.currentThread().getName() + " failed main thread check: " + reason, new Throwable());
++            throw new IllegalStateException(reason);
++        }
++    }
++
++    public static void ensureTickThread(final ServerLevel world, final int chunkX, final int chunkZ, final String reason) {
++        if (!isTickThreadFor(world, chunkX, chunkZ)) {
++            MinecraftServer.LOGGER.error("Thread " + Thread.currentThread().getName() + " failed main thread check: " + reason, new Throwable());
++            throw new IllegalStateException(reason);
++        }
++    }
++
++    public static void ensureTickThread(final Entity entity, final String reason) {
++        if (!isTickThreadFor(entity)) {
++            MinecraftServer.LOGGER.error("Thread " + Thread.currentThread().getName() + " failed main thread check: " + reason, new Throwable());
++            throw new IllegalStateException(reason);
++        }
++    }
++
++    public final int id; /* We don't override getId as the spec requires that it be unique (with respect to all other threads) */
++
++    private static final AtomicInteger ID_GENERATOR = new AtomicInteger();
++
++    public TickThread(final String name) {
++        this(null, name);
++    }
++
++    public TickThread(final Runnable run, final String name) {
++        this(run, name, ID_GENERATOR.incrementAndGet());
++    }
++
++    private TickThread(final Runnable run, final String name, final int id) {
++        super(run, name);
++        this.id = id;
++    }
++
++    public static TickThread getCurrentTickThread() {
++        return (TickThread)Thread.currentThread();
++    }
++
++    public static boolean isTickThread() {
++        return Bukkit.isPrimaryThread();
++    }
++
++    public static boolean isTickThreadFor(final ServerLevel world, final int chunkX, final int chunkZ) {
++        return Bukkit.isPrimaryThread();
++    }
++
++    public static boolean isTickThreadFor(final Entity entity) {
++        return Bukkit.isPrimaryThread();
++    }
++}
+diff --git a/src/main/java/org/spigotmc/AsyncCatcher.java b/src/main/java/org/spigotmc/AsyncCatcher.java
+index bbf0d9d9c44fe8d7add2f978994ec129420814c7..78669fa035b7537ff7e533cf32aaf2995625424f 100644
+--- a/src/main/java/org/spigotmc/AsyncCatcher.java
++++ b/src/main/java/org/spigotmc/AsyncCatcher.java
+@@ -9,7 +9,7 @@ public class AsyncCatcher
+ 
+     public static void catchOp(String reason)
+     {
+-        if ( AsyncCatcher.enabled && Thread.currentThread() != MinecraftServer.getServer().serverThread )
++        if ( (AsyncCatcher.enabled || io.papermc.paper.util.TickThread.STRICT_THREAD_CHECKS) && Thread.currentThread() != MinecraftServer.getServer().serverThread ) // Paper
+         {
+             throw new IllegalStateException( "Asynchronous " + reason + "!" );
+         }

patches/unapplied/server/0018-Add-command-line-option-to-load-extra-plugin-jars-no.patch

@@ -0,0 +1,65 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jason Penilla <11360596+jpenilla@users.noreply.github.com>
+Date: Tue, 18 May 2021 14:39:44 -0700
+Subject: [PATCH] Add command line option to load extra plugin jars not in the
+ plugins folder
+
+ex: java -jar paperclip.jar nogui -add-plugin=/path/to/plugin.jar -add-plugin=/path/to/another/plugin_jar.jar
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+index ccf71eba89afd2f86c6f46b6aebfe25c98f735ed..42e74be803ad80b78e0db1c8cdd2dd9e45a40985 100644
+--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
++++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+@@ -428,6 +428,35 @@ public final class CraftServer implements Server {
+         io.papermc.paper.plugin.entrypoint.LaunchEntryPointHandler.INSTANCE.enter(io.papermc.paper.plugin.entrypoint.Entrypoint.PLUGIN); // Paper - replace implementation
+     }
+ 
++    // Paper start
++    @Override
++    public File getPluginsFolder() {
++        return (File) this.console.options.valueOf("plugins");
++    }
++
++    private List<File> extraPluginJars() {
++        @SuppressWarnings("unchecked")
++        final List<File> jars = (List<File>) this.console.options.valuesOf("add-plugin");
++        final List<File> list = new ArrayList<>();
++        for (final File file : jars) {
++            if (!file.exists()) {
++                net.minecraft.server.MinecraftServer.LOGGER.warn("File '{}' specified through 'add-plugin' argument does not exist, cannot load a plugin from it!", file.getAbsolutePath());
++                continue;
++            }
++            if (!file.isFile()) {
++                net.minecraft.server.MinecraftServer.LOGGER.warn("File '{}' specified through 'add-plugin' argument is not a file, cannot load a plugin from it!", file.getAbsolutePath());
++                continue;
++            }
++            if (!file.getName().endsWith(".jar")) {
++                net.minecraft.server.MinecraftServer.LOGGER.warn("File '{}' specified through 'add-plugin' argument is not a jar file, cannot load a plugin from it!", file.getAbsolutePath());
++                continue;
++            }
++            list.add(file);
++        }
++        return list;
++    }
++    // Paper end
++
+     public void enablePlugins(PluginLoadOrder type) {
+         if (type == PluginLoadOrder.STARTUP) {
+             this.helpMap.clear();
+diff --git a/src/main/java/org/bukkit/craftbukkit/Main.java b/src/main/java/org/bukkit/craftbukkit/Main.java
+index 442beb8675d6d53a92fb6a5b7c2abdda2822e6fe..6aeb5c145ea26243abda693e81014f73c6abfb56 100644
+--- a/src/main/java/org/bukkit/craftbukkit/Main.java
++++ b/src/main/java/org/bukkit/craftbukkit/Main.java
+@@ -159,6 +159,12 @@ public class Main {
+                         .ofType(File.class)
+                         .defaultsTo(new File("paper.yml"))
+                         .describedAs("Yml file");
++
++                acceptsAll(asList("add-plugin", "add-extra-plugin-jar"), "Specify paths to extra plugin jars to be loaded in addition to those in the plugins folder. This argument can be specified multiple times, once for each extra plugin jar path.")
++                        .withRequiredArg()
++                        .ofType(File.class)
++                        .defaultsTo(new File[] {})
++                        .describedAs("Jar file");
+                 // Paper end
+             }
+         };

patches/unapplied/server/0020-Configurable-cactus-bamboo-and-reed-growth-heights.patch

@@ -0,0 +1,92 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Zach Brown <zach.brown@destroystokyo.com>
+Date: Tue, 1 Mar 2016 13:02:51 -0600
+Subject: [PATCH] Configurable cactus bamboo and reed growth heights
+
+Bamboo - Both the minimum fully-grown heights and the maximum are configurable
+- Machine_Maker
+
+diff --git a/src/main/java/net/minecraft/world/level/block/BambooStalkBlock.java b/src/main/java/net/minecraft/world/level/block/BambooStalkBlock.java
+index 0d05ad9c0b5043e58d639041cfe3fb7a27f373a3..a5d391af2c6b733d653188f4aeeec2afffd96adf 100644
+--- a/src/main/java/net/minecraft/world/level/block/BambooStalkBlock.java
++++ b/src/main/java/net/minecraft/world/level/block/BambooStalkBlock.java
+@@ -130,7 +130,7 @@ public class BambooStalkBlock extends Block implements BonemealableBlock {
+             if (random.nextFloat() < (world.spigotConfig.bambooModifier / (100.0f * 3)) && world.isEmptyBlock(pos.above()) && world.getRawBrightness(pos.above(), 0) >= 9) { // Spigot - SPIGOT-7159: Better modifier resolution
+                 int i = this.getHeightBelowUpToMax(world, pos) + 1;
+ 
+-                if (i < 16) {
++                if (i < world.paperConfig().maxGrowthHeight.bamboo.max) { // Paper
+                     this.growBamboo(state, world, pos, random, i);
+                 }
+             }
+@@ -161,7 +161,7 @@ public class BambooStalkBlock extends Block implements BonemealableBlock {
+         int i = this.getHeightAboveUpToMax(world, pos);
+         int j = this.getHeightBelowUpToMax(world, pos);
+ 
+-        return i + j + 1 < 16 && (Integer) world.getBlockState(pos.above(i)).getValue(BambooStalkBlock.STAGE) != 1;
++        return i + j + 1 < ((Level) world).paperConfig().maxGrowthHeight.bamboo.max && (Integer) world.getBlockState(pos.above(i)).getValue(BambooStalkBlock.STAGE) != 1; // Paper
+     }
+ 
+     @Override
+@@ -180,7 +180,7 @@ public class BambooStalkBlock extends Block implements BonemealableBlock {
+             BlockPos blockposition1 = pos.above(i);
+             BlockState iblockdata1 = world.getBlockState(blockposition1);
+ 
+-            if (k >= 16 || !iblockdata1.is(Blocks.BAMBOO) || (Integer) iblockdata1.getValue(BambooStalkBlock.STAGE) == 1 || !world.isEmptyBlock(blockposition1.above())) { // CraftBukkit - If the BlockSpreadEvent was cancelled, we have no bamboo here
++            if (k >= world.paperConfig().maxGrowthHeight.bamboo.max || !iblockdata1.is(Blocks.BAMBOO) || (Integer) iblockdata1.getValue(BambooStalkBlock.STAGE) == 1 || !world.isEmptyBlock(blockposition1.above())) { // CraftBukkit - If the BlockSpreadEvent was cancelled, we have no bamboo here // Paper - Configurable cactus bamboo and reed growth heights
+                 return;
+             }
+ 
+@@ -221,7 +221,7 @@ public class BambooStalkBlock extends Block implements BonemealableBlock {
+         }
+ 
+         int j = (Integer) state.getValue(BambooStalkBlock.AGE) != 1 && !iblockdata2.is(Blocks.BAMBOO) ? 0 : 1;
+-        int k = (height < 11 || random.nextFloat() >= 0.25F) && height != 15 ? 0 : 1;
++        int k = (height < world.paperConfig().maxGrowthHeight.bamboo.min || random.nextFloat() >= 0.25F) && height != (world.paperConfig().maxGrowthHeight.bamboo.max - 1) ? 0 : 1; // Paper
+ 
+         // CraftBukkit start
+         if (org.bukkit.craftbukkit.event.CraftEventFactory.handleBlockSpreadEvent(world, pos, pos.above(), (BlockState) ((BlockState) ((BlockState) this.defaultBlockState().setValue(BambooStalkBlock.AGE, j)).setValue(BambooStalkBlock.LEAVES, blockpropertybamboosize)).setValue(BambooStalkBlock.STAGE, k), 3)) {
+@@ -236,7 +236,7 @@ public class BambooStalkBlock extends Block implements BonemealableBlock {
+     protected int getHeightAboveUpToMax(BlockGetter world, BlockPos pos) {
+         int i;
+ 
+-        for (i = 0; i < 16 && world.getBlockState(pos.above(i + 1)).is(Blocks.BAMBOO); ++i) {
++        for (i = 0; i < ((Level) world).paperConfig().maxGrowthHeight.bamboo.max && world.getBlockState(pos.above(i + 1)).is(Blocks.BAMBOO); ++i) { // Paper
+             ;
+         }
+ 
+@@ -246,7 +246,7 @@ public class BambooStalkBlock extends Block implements BonemealableBlock {
+     protected int getHeightBelowUpToMax(BlockGetter world, BlockPos pos) {
+         int i;
+ 
+-        for (i = 0; i < 16 && world.getBlockState(pos.below(i + 1)).is(Blocks.BAMBOO); ++i) {
++        for (i = 0; i < ((Level) world).paperConfig().maxGrowthHeight.bamboo.max && world.getBlockState(pos.below(i + 1)).is(Blocks.BAMBOO); ++i) { // Paper
+             ;
+         }
+ 
+diff --git a/src/main/java/net/minecraft/world/level/block/CactusBlock.java b/src/main/java/net/minecraft/world/level/block/CactusBlock.java
+index a7e8be5545ef6c2ff9a056d297d11850d07bdd1c..2c3bbe4f295be9782c11af13c2cf9c05f27313d9 100644
+--- a/src/main/java/net/minecraft/world/level/block/CactusBlock.java
++++ b/src/main/java/net/minecraft/world/level/block/CactusBlock.java
+@@ -54,7 +54,7 @@ public class CactusBlock extends Block {
+                 ;
+             }
+ 
+-            if (i < 3) {
++            if (i < world.paperConfig().maxGrowthHeight.cactus) { // Paper - Configurable growth height
+                 int j = (Integer) state.getValue(CactusBlock.AGE);
+ 
+                 int modifier = world.spigotConfig.cactusModifier; // Spigot - SPIGOT-7159: Better modifier resolution
+diff --git a/src/main/java/net/minecraft/world/level/block/SugarCaneBlock.java b/src/main/java/net/minecraft/world/level/block/SugarCaneBlock.java
+index 7fbc511eb1cbfedc3bbf5bff7a61e8f74c294140..c3f500580d257e1397f2eb7c47b063a6fe6bb405 100644
+--- a/src/main/java/net/minecraft/world/level/block/SugarCaneBlock.java
++++ b/src/main/java/net/minecraft/world/level/block/SugarCaneBlock.java
+@@ -52,7 +52,7 @@ public class SugarCaneBlock extends Block {
+                 ;
+             }
+ 
+-            if (i < 3) {
++            if (i < world.paperConfig().maxGrowthHeight.reeds) { // Paper - Configurable growth height
+                 int j = (Integer) state.getValue(SugarCaneBlock.AGE);
+ 
+                 int modifier = world.spigotConfig.caneModifier; // Spigot - SPIGOT-7159: Better modifier resolution

patches/unapplied/server/0021-Configurable-baby-zombie-movement-speed.patch

@@ -0,0 +1,30 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Zach Brown <zach.brown@destroystokyo.com>
+Date: Tue, 1 Mar 2016 13:09:16 -0600
+Subject: [PATCH] Configurable baby zombie movement speed
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/monster/Zombie.java b/src/main/java/net/minecraft/world/entity/monster/Zombie.java
+index 5508dd33111a8206cbda4caf9d5003574d91d371..b32e55685d2a3f571828ed3cf69cb985ccaaa931 100644
+--- a/src/main/java/net/minecraft/world/entity/monster/Zombie.java
++++ b/src/main/java/net/minecraft/world/entity/monster/Zombie.java
+@@ -77,6 +77,7 @@ public class Zombie extends Monster {
+ 
+     private static final UUID SPEED_MODIFIER_BABY_UUID = UUID.fromString("B9766B59-9566-4402-BC1F-2EE2A276D836");
+     private static final AttributeModifier SPEED_MODIFIER_BABY = new AttributeModifier(Zombie.SPEED_MODIFIER_BABY_UUID, "Baby speed boost", 0.5D, AttributeModifier.Operation.MULTIPLY_BASE);
++    private final AttributeModifier babyModifier = new net.minecraft.world.entity.ai.attributes.AttributeModifier(SPEED_MODIFIER_BABY.getId(), SPEED_MODIFIER_BABY.getName(), this.level().paperConfig().entities.behavior.babyZombieMovementModifier, SPEED_MODIFIER_BABY.getOperation()); // Paper - Make baby speed configurable
+     private static final EntityDataAccessor<Boolean> DATA_BABY_ID = SynchedEntityData.defineId(Zombie.class, EntityDataSerializers.BOOLEAN);
+     private static final EntityDataAccessor<Integer> DATA_SPECIAL_TYPE_ID = SynchedEntityData.defineId(Zombie.class, EntityDataSerializers.INT);
+     public static final EntityDataAccessor<Boolean> DATA_DROWNED_CONVERSION_ID = SynchedEntityData.defineId(Zombie.class, EntityDataSerializers.BOOLEAN);
+@@ -185,9 +186,9 @@ public class Zombie extends Monster {
+         if (this.level() != null && !this.level().isClientSide) {
+             AttributeInstance attributemodifiable = this.getAttribute(Attributes.MOVEMENT_SPEED);
+ 
+-            attributemodifiable.removeModifier(Zombie.SPEED_MODIFIER_BABY);
++            attributemodifiable.removeModifier(this.babyModifier); // Paper
+             if (baby) {
+-                attributemodifiable.addTransientModifier(Zombie.SPEED_MODIFIER_BABY);
++                attributemodifiable.addTransientModifier(this.babyModifier); // Paper
+             }
+         }
+ 

patches/unapplied/server/0022-Configurable-fishing-time-ranges.patch

@@ -0,0 +1,30 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Zach Brown <zach.brown@destroystokyo.com>
+Date: Tue, 1 Mar 2016 13:14:11 -0600
+Subject: [PATCH] Configurable fishing time ranges
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/projectile/FishingHook.java b/src/main/java/net/minecraft/world/entity/projectile/FishingHook.java
+index 94ca8ae42ef02cea92c4029d219edfe69abb4ce3..4377a0f7387a09983a5580d408775f386ea5f487 100644
+--- a/src/main/java/net/minecraft/world/entity/projectile/FishingHook.java
++++ b/src/main/java/net/minecraft/world/entity/projectile/FishingHook.java
+@@ -92,6 +92,10 @@ public class FishingHook extends Projectile {
+         this.noCulling = true;
+         this.luck = Math.max(0, luckOfTheSeaLevel);
+         this.lureSpeed = Math.max(0, lureLevel);
++        // Paper start
++        minWaitTime = world.paperConfig().fishingTimeRange.minimum;
++        maxWaitTime = world.paperConfig().fishingTimeRange.maximum;
++        // Paper end
+     }
+ 
+     public FishingHook(EntityType<? extends FishingHook> type, Level world) {
+@@ -409,7 +413,7 @@ public class FishingHook extends Projectile {
+             } else {
+                 // CraftBukkit start - logic to modify fishing wait time
+                 this.timeUntilLured = Mth.nextInt(this.random, this.minWaitTime, this.maxWaitTime);
+-                this.timeUntilLured -= (this.applyLure) ? this.lureSpeed * 20 * 5 : 0;
++                this.timeUntilLured -= (this.applyLure) ? (this.lureSpeed * 20 * 5 >= this.maxWaitTime ? this.timeUntilLured - 1 : this.lureSpeed * 20 * 5) : 0; // Paper - Fix Lure infinite loop
+                 // CraftBukkit end
+             }
+         }

patches/unapplied/server/0023-Allow-nerfed-mobs-to-jump-and-take-water-damage.patch

@@ -0,0 +1,49 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Zach Brown <zach.brown@destroystokyo.com>
+Date: Tue, 1 Mar 2016 13:24:16 -0600
+Subject: [PATCH] Allow nerfed mobs to jump and take water damage
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/Mob.java b/src/main/java/net/minecraft/world/entity/Mob.java
+index c2c2c24a593f67abc1eec4a20ced1ec0b5fa8cad..b3de20af553414369784b17139dd9185cc715db2 100644
+--- a/src/main/java/net/minecraft/world/entity/Mob.java
++++ b/src/main/java/net/minecraft/world/entity/Mob.java
+@@ -109,6 +109,7 @@ public abstract class Mob extends LivingEntity implements Targeting {
+     private final BodyRotationControl bodyRotationControl;
+     protected PathNavigation navigation;
+     public GoalSelector goalSelector;
++    @Nullable public net.minecraft.world.entity.ai.goal.FloatGoal goalFloat; // Paper
+     public GoalSelector targetSelector;
+     @Nullable
+     private LivingEntity target;
+@@ -868,7 +869,17 @@ public abstract class Mob extends LivingEntity implements Targeting {
+     @Override
+     protected final void serverAiStep() {
+         ++this.noActionTime;
+-        if (!this.aware) return; // CraftBukkit
++        if (!this.aware) { // Paper start - Allow nerfed mobs to jump, float and take water damage
++            if (goalFloat != null) {
++                if (goalFloat.canUse()) goalFloat.tick();
++                this.getJumpControl().tick();
++            }
++            if (this.isSensitiveToWater() && isInWaterRainOrBubble()) {
++                hurt(this.damageSources().drown(), 1.0F);
++            }
++            return;
++        }
++        // Paper end
+         this.level().getProfiler().push("sensing");
+         this.sensing.tick();
+         this.level().getProfiler().pop();
+diff --git a/src/main/java/net/minecraft/world/entity/ai/goal/FloatGoal.java b/src/main/java/net/minecraft/world/entity/ai/goal/FloatGoal.java
+index 01950951ea06e43bedeeede489a112e577617829..7093c62be53fe99ed9880fc8ddaa07440fe4f715 100644
+--- a/src/main/java/net/minecraft/world/entity/ai/goal/FloatGoal.java
++++ b/src/main/java/net/minecraft/world/entity/ai/goal/FloatGoal.java
+@@ -9,6 +9,7 @@ public class FloatGoal extends Goal {
+ 
+     public FloatGoal(Mob mob) {
+         this.mob = mob;
++        if (mob.getCommandSenderWorld().paperConfig().entities.behavior.spawnerNerfedMobsShouldJump) mob.goalFloat = this; // Paper
+         this.setFlags(EnumSet.of(Goal.Flag.JUMP));
+         mob.getNavigation().setCanFloat(true);
+     }

patches/unapplied/server/0024-Add-configurable-despawn-distances-for-living-entiti.patch

@@ -0,0 +1,27 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Suddenly <suddenly@suddenly.coffee>
+Date: Tue, 1 Mar 2016 13:51:54 -0600
+Subject: [PATCH] Add configurable despawn distances for living entities
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/Mob.java b/src/main/java/net/minecraft/world/entity/Mob.java
+index b3de20af553414369784b17139dd9185cc715db2..9e17033b801676f9db7739bd2ed710744f42defd 100644
+--- a/src/main/java/net/minecraft/world/entity/Mob.java
++++ b/src/main/java/net/minecraft/world/entity/Mob.java
+@@ -844,14 +844,14 @@ public abstract class Mob extends LivingEntity implements Targeting {
+ 
+             if (entityhuman != null) {
+                 double d0 = entityhuman.distanceToSqr((Entity) this);
+-                int i = this.getType().getCategory().getDespawnDistance();
++                int i = this.level().paperConfig().entities.spawning.despawnRanges.get(this.getType().getCategory()).hard(); // Paper - custom despawn distances
+                 int j = i * i;
+ 
+                 if (d0 > (double) j && this.removeWhenFarAway(d0)) {
+                     this.discard();
+                 }
+ 
+-                int k = this.getType().getCategory().getNoDespawnDistance();
++                int k = this.level().paperConfig().entities.spawning.despawnRanges.get(this.getType().getCategory()).soft(); // Paper - custom despawn distances
+                 int l = k * k;
+ 
+                 if (this.noActionTime > 600 && this.random.nextInt(800) == 0 && d0 > (double) l && this.removeWhenFarAway(d0)) {

patches/unapplied/server/0025-Allow-for-toggling-of-spawn-chunks.patch

@@ -0,0 +1,18 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Zach Brown <zach.brown@destroystokyo.com>
+Date: Thu, 3 Mar 2016 03:53:43 -0600
+Subject: [PATCH] Allow for toggling of spawn chunks
+
+
+diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
+index 5988c0847af4e8f0094328e91f736f25d567db60..fb78a91d1ab77f909823422c6d4e2ef7ed10c9c3 100644
+--- a/src/main/java/net/minecraft/world/level/Level.java
++++ b/src/main/java/net/minecraft/world/level/Level.java
+@@ -261,6 +261,7 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
+         });
+         // CraftBukkit end
+         timings = new co.aikar.timings.WorldTimingsHandler(this); // Paper - code below can generate new world and access timings
++        this.keepSpawnInMemory = this.paperConfig().spawn.keepSpawnLoaded; // Paper
+         this.entityLimiter = new org.spigotmc.TickLimiter(spigotConfig.entityMaxTickTime);
+         this.tileLimiter = new org.spigotmc.TickLimiter(spigotConfig.tileMaxTickTime);
+     }

patches/unapplied/server/0026-Drop-falling-block-and-tnt-entities-at-the-specified.patch

@@ -0,0 +1,62 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Byteflux <byte@byteflux.net>
+Date: Tue, 1 Mar 2016 14:14:15 -0600
+Subject: [PATCH] Drop falling block and tnt entities at the specified height
+
+Co-authored-by: Jake Potrebic <jake.m.potrebic@gmail.com>
+
+diff --git a/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java b/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java
+index 99bfbe282fe98f23cc73f082628dab740eda944b..2d32a2b41100b0e32ec64c8724734f22c7c883e2 100644
+--- a/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java
++++ b/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java
+@@ -142,6 +142,16 @@ public class FallingBlockEntity extends Entity {
+             }
+ 
+             this.move(MoverType.SELF, this.getDeltaMovement());
++            // Paper start - Configurable EntityFallingBlock height nerf
++            if (this.level().paperConfig().fixes.fallingBlockHeightNerf.test(v -> this.getY() > v)) {
++                if (this.dropItem && this.level().getGameRules().getBoolean(GameRules.RULE_DOENTITYDROPS)) {
++                    this.spawnAtLocation(block);
++                }
++
++                this.discard();
++                return;
++            }
++            // Paper end
+             if (!this.level().isClientSide) {
+                 BlockPos blockposition = this.blockPosition();
+                 boolean flag = this.blockState.getBlock() instanceof ConcretePowderBlock;
+diff --git a/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java b/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java
+index a290daaeebfc110428dd8201f144c2acb06fddfc..415b8822f0dfb14d49bccb2a10ac04025891ddf7 100644
+--- a/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java
++++ b/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java
+@@ -69,6 +69,12 @@ public class PrimedTnt extends Entity implements TraceableEntity {
+         }
+ 
+         this.move(MoverType.SELF, this.getDeltaMovement());
++        // Paper start - Configurable TNT entity height nerf
++        if (this.level().paperConfig().fixes.tntEntityHeightNerf.test(v -> this.getY() > v)) {
++            this.discard();
++            return;
++        }
++        // Paper end
+         this.setDeltaMovement(this.getDeltaMovement().scale(0.98D));
+         if (this.onGround()) {
+             this.setDeltaMovement(this.getDeltaMovement().multiply(0.7D, -0.5D, 0.7D));
+diff --git a/src/main/java/net/minecraft/world/entity/vehicle/MinecartTNT.java b/src/main/java/net/minecraft/world/entity/vehicle/MinecartTNT.java
+index 137f9052701c5b10ff03b01316ced37220dbf280..1f4031cb7a101a7f25d530380974a627cc29bb09 100644
+--- a/src/main/java/net/minecraft/world/entity/vehicle/MinecartTNT.java
++++ b/src/main/java/net/minecraft/world/entity/vehicle/MinecartTNT.java
+@@ -53,6 +53,12 @@ public class MinecartTNT extends AbstractMinecart {
+     public void tick() {
+         super.tick();
+         if (this.fuse > 0) {
++            // Paper start - Configurable TNT entity height nerf
++            if (this.level().paperConfig().fixes.tntEntityHeightNerf.test(v -> this.getY() > v)) {
++                this.discard();
++                return;
++            }
++            // Paper end
+             --this.fuse;
+             this.level().addParticle(ParticleTypes.SMOKE, this.getX(), this.getY() + 0.5D, this.getZ(), 0.0D, 0.0D, 0.0D);
+         } else if (this.fuse == 0) {

patches/unapplied/server/0027-Show-Paper-in-client-crashes-server-lists-and-Mojang.patch

@@ -0,0 +1,104 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Zach Brown <zach.brown@destroystokyo.com>
+Date: Tue, 1 Mar 2016 14:32:43 -0600
+Subject: [PATCH] Show 'Paper' in client crashes, server lists, and Mojang
+ stats
+
+
+diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
+index f46ae930c6d1609dbefb56e67853f6e8504b749f..787f32156b02063adf6426b7430da4c4956b759c 100644
+--- a/src/main/java/net/minecraft/server/MinecraftServer.java
++++ b/src/main/java/net/minecraft/server/MinecraftServer.java
+@@ -1457,7 +1457,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+ 
+     @DontObfuscate
+     public String getServerModName() {
+-        return "Spigot"; // Spigot - Spigot > // CraftBukkit - cb > vanilla!
++        return "Paper"; // Paper - Paper > // Spigot - Spigot > // CraftBukkit - cb > vanilla!
+     }
+ 
+     public SystemReport fillSystemReport(SystemReport details) {
+diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+index 2d0d6dbcb515de0d81079a1d6b68c9b2bd973893..d5731088df47fa49e3248dfbcd755de7cd91efbd 100644
+--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
++++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+@@ -263,7 +263,7 @@ import org.yaml.snakeyaml.error.MarkedYAMLException;
+ import net.md_5.bungee.api.chat.BaseComponent; // Spigot
+ 
+ public final class CraftServer implements Server {
+-    private final String serverName = "CraftBukkit";
++    private final String serverName = "Paper"; // Paper
+     private final String serverVersion;
+     private final String bukkitVersion = Versioning.getBukkitVersion();
+     private final Logger logger = Logger.getLogger("Minecraft");
+diff --git a/src/main/java/org/bukkit/craftbukkit/Main.java b/src/main/java/org/bukkit/craftbukkit/Main.java
+index ff955d3a20bf953770cc81f8b89a6d4425a5f813..268192b06592eaa56a454e0f02b2d848f766d9ac 100644
+--- a/src/main/java/org/bukkit/craftbukkit/Main.java
++++ b/src/main/java/org/bukkit/craftbukkit/Main.java
+@@ -240,12 +240,25 @@ public class Main {
+                     deadline.add(Calendar.DAY_OF_YEAR, -21);
+                     if (buildDate.before(deadline.getTime())) {
+                         System.err.println("*** Error, this build is outdated ***");
+-                        System.err.println("*** Please download a new build as per instructions from https://www.spigotmc.org/go/outdated-spigot ***");
++                        System.err.println("*** Please download a new build as per instructions from https://papermc.io/downloads/paper ***"); // Paper
+                         System.err.println("*** Server will start in 20 seconds ***");
+                         Thread.sleep(TimeUnit.SECONDS.toMillis(20));
+                     }
+                 }
+ 
++                // Paper start - Log Java and OS versioning to help with debugging plugin issues
++                java.lang.management.RuntimeMXBean runtimeMX = java.lang.management.ManagementFactory.getRuntimeMXBean();
++                java.lang.management.OperatingSystemMXBean osMX = java.lang.management.ManagementFactory.getOperatingSystemMXBean();
++                if (runtimeMX != null && osMX != null) {
++                    String javaInfo = "Java " + runtimeMX.getSpecVersion() + " (" + runtimeMX.getVmName() + " " + runtimeMX.getVmVersion() + ")";
++                    String osInfo = "Host: " + osMX.getName() + " " + osMX.getVersion() + " (" + osMX.getArch() + ")";
++
++                    System.out.println("System Info: " + javaInfo + " " + osInfo);
++                } else {
++                    System.out.println("Unable to read system info");
++                }
++                // Paper end
++
+                 System.out.println("Loading libraries, please wait...");
+                 net.minecraft.server.Main.main(options);
+             } catch (Throwable t) {
+diff --git a/src/main/java/org/spigotmc/WatchdogThread.java b/src/main/java/org/spigotmc/WatchdogThread.java
+index f1194eb6fdfba60959e00080d0562f2820d13b27..11d7ede26b46d0bf9cced65e8c3bcc41c8b66dbf 100644
+--- a/src/main/java/org/spigotmc/WatchdogThread.java
++++ b/src/main/java/org/spigotmc/WatchdogThread.java
+@@ -19,7 +19,7 @@ public final class WatchdogThread extends io.papermc.paper.util.TickThread // Pa
+ 
+     private WatchdogThread(long timeoutTime, boolean restart)
+     {
+-        super( "Spigot Watchdog Thread" );
++        super( "Paper Watchdog Thread" );
+         this.timeoutTime = timeoutTime;
+         this.restart = restart;
+     }
+@@ -65,14 +65,14 @@ public final class WatchdogThread extends io.papermc.paper.util.TickThread // Pa
+             {
+                 Logger log = Bukkit.getServer().getLogger();
+                 log.log( Level.SEVERE, "------------------------------" );
+-                log.log( Level.SEVERE, "The server has stopped responding! This is (probably) not a Spigot bug." );
++                log.log( Level.SEVERE, "The server has stopped responding! This is (probably) not a Paper bug." ); // Paper
+                 log.log( Level.SEVERE, "If you see a plugin in the Server thread dump below, then please report it to that author" );
+                 log.log( Level.SEVERE, "\t *Especially* if it looks like HTTP or MySQL operations are occurring" );
+                 log.log( Level.SEVERE, "If you see a world save or edit, then it means you did far more than your server can handle at once" );
+                 log.log( Level.SEVERE, "\t If this is the case, consider increasing timeout-time in spigot.yml but note that this will replace the crash with LARGE lag spikes" );
+-                log.log( Level.SEVERE, "If you are unsure or still think this is a Spigot bug, please report to https://www.spigotmc.org/" );
++                log.log( Level.SEVERE, "If you are unsure or still think this is a Paper bug, please report this to https://github.com/PaperMC/Paper/issues" );
+                 log.log( Level.SEVERE, "Be sure to include ALL relevant console errors and Minecraft crash reports" );
+-                log.log( Level.SEVERE, "Spigot version: " + Bukkit.getServer().getVersion() );
++                log.log( Level.SEVERE, "Paper version: " + Bukkit.getServer().getVersion() );
+                 //
+                 if ( net.minecraft.world.level.Level.lastPhysicsProblem != null )
+                 {
+@@ -82,7 +82,7 @@ public final class WatchdogThread extends io.papermc.paper.util.TickThread // Pa
+                 }
+                 //
+                 log.log( Level.SEVERE, "------------------------------" );
+-                log.log( Level.SEVERE, "Server thread dump (Look for plugins here before reporting to Spigot!):" );
++                log.log( Level.SEVERE, "Server thread dump (Look for plugins here before reporting to Paper!):" ); // Paper
+                 io.papermc.paper.chunk.system.scheduling.ChunkTaskScheduler.dumpAllChunkLoadInfo(isLongTimeout); // Paper // Paper - rewrite chunk system
+                 WatchdogThread.dumpThread( ManagementFactory.getThreadMXBean().getThreadInfo( MinecraftServer.getServer().serverThread.getId(), Integer.MAX_VALUE ), log );
+                 log.log( Level.SEVERE, "------------------------------" );

patches/unapplied/server/0028-Implement-Paper-VersionChecker.patch

@@ -0,0 +1,157 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Zach Brown <zach@zachbr.io>
+Date: Mon, 27 May 2019 03:40:05 -0500
+Subject: [PATCH] Implement Paper VersionChecker
+
+
+diff --git a/src/main/java/com/destroystokyo/paper/PaperVersionFetcher.java b/src/main/java/com/destroystokyo/paper/PaperVersionFetcher.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..22a55be34fde453fedd987173d95b8b347a03588
+--- /dev/null
++++ b/src/main/java/com/destroystokyo/paper/PaperVersionFetcher.java
+@@ -0,0 +1,129 @@
++package com.destroystokyo.paper;
++
++import com.destroystokyo.paper.util.VersionFetcher;
++import com.google.common.base.Charsets;
++import com.google.common.io.Resources;
++import com.google.gson.*;
++import net.kyori.adventure.text.Component;
++import net.kyori.adventure.text.event.ClickEvent;
++import net.kyori.adventure.text.format.NamedTextColor;
++
++import javax.annotation.Nonnull;
++import javax.annotation.Nullable;
++import java.io.*;
++import java.net.HttpURLConnection;
++import java.net.URL;
++import java.util.stream.StreamSupport;
++
++public class PaperVersionFetcher implements VersionFetcher {
++    private static final java.util.regex.Pattern VER_PATTERN = java.util.regex.Pattern.compile("^([0-9\\.]*)\\-.*R"); // R is an anchor, will always give '-R' at end
++    private static final String GITHUB_BRANCH_NAME = "master";
++    private static final String DOWNLOAD_PAGE = "https://papermc.io/downloads/paper";
++    private static @Nullable String mcVer;
++
++    @Override
++    public long getCacheTime() {
++        return 720000;
++    }
++
++    @Nonnull
++    @Override
++    public Component getVersionMessage(@Nonnull String serverVersion) {
++        String[] parts = serverVersion.substring("git-Paper-".length()).split("[-\\s]");
++        return getUpdateStatusMessage("PaperMC/Paper", GITHUB_BRANCH_NAME, parts[0]);
++    }
++
++    private static @Nullable String getMinecraftVersion() {
++        if (mcVer == null) {
++            java.util.regex.Matcher matcher = VER_PATTERN.matcher(org.bukkit.Bukkit.getBukkitVersion());
++            if (matcher.find()) {
++                String result = matcher.group();
++                mcVer = result.substring(0, result.length() - 2); // strip 'R' anchor and trailing '-'
++            } else {
++                org.bukkit.Bukkit.getLogger().warning("Unable to match version to pattern! Report to PaperMC!");
++                org.bukkit.Bukkit.getLogger().warning("Pattern: " + VER_PATTERN.toString());
++                org.bukkit.Bukkit.getLogger().warning("Version: " + org.bukkit.Bukkit.getBukkitVersion());
++            }
++        }
++
++        return mcVer;
++    }
++
++    private static Component getUpdateStatusMessage(@Nonnull String repo, @Nonnull String branch, @Nonnull String versionInfo) {
++        int distance;
++        try {
++            int jenkinsBuild = Integer.parseInt(versionInfo);
++            distance = fetchDistanceFromSiteApi(jenkinsBuild, getMinecraftVersion());
++        } catch (NumberFormatException ignored) {
++            versionInfo = versionInfo.replace("\"", "");
++            distance = fetchDistanceFromGitHub(repo, branch, versionInfo);
++        }
++
++        switch (distance) {
++            case -1:
++                return Component.text("Error obtaining version information", NamedTextColor.YELLOW);
++            case 0:
++                return Component.text("You are running the latest version", NamedTextColor.GREEN);
++            case -2:
++                return Component.text("Unknown version", NamedTextColor.YELLOW);
++            default:
++                return Component.text("You are " + distance + " version(s) behind", NamedTextColor.YELLOW)
++                        .append(Component.newline())
++                        .append(Component.text("Download the new version at: ")
++                                .append(Component.text(DOWNLOAD_PAGE, NamedTextColor.GOLD)
++                                        .hoverEvent(Component.text("Click to open", NamedTextColor.WHITE))
++                                        .clickEvent(ClickEvent.openUrl(DOWNLOAD_PAGE))));
++        }
++    }
++
++    private static int fetchDistanceFromSiteApi(int jenkinsBuild, @Nullable String siteApiVersion) {
++        if (siteApiVersion == null) { return -1; }
++        try {
++            try (BufferedReader reader = Resources.asCharSource(
++                new URL("https://api.papermc.io/v2/projects/paper/versions/" + siteApiVersion),
++                Charsets.UTF_8
++            ).openBufferedStream()) {
++                JsonObject json = new Gson().fromJson(reader, JsonObject.class);
++                JsonArray builds = json.getAsJsonArray("builds");
++                int latest = StreamSupport.stream(builds.spliterator(), false)
++                    .mapToInt(e -> e.getAsInt())
++                    .max()
++                    .getAsInt();
++                return latest - jenkinsBuild;
++            } catch (JsonSyntaxException ex) {
++                ex.printStackTrace();
++                return -1;
++            }
++        } catch (IOException e) {
++            e.printStackTrace();
++            return -1;
++        }
++    }
++
++    // Contributed by Techcable <Techcable@outlook.com> in GH-65
++    private static int fetchDistanceFromGitHub(@Nonnull String repo, @Nonnull String branch, @Nonnull String hash) {
++        try {
++            HttpURLConnection connection = (HttpURLConnection) new URL("https://api.github.com/repos/" + repo + "/compare/" + branch + "..." + hash).openConnection();
++            connection.connect();
++            if (connection.getResponseCode() == HttpURLConnection.HTTP_NOT_FOUND) return -2; // Unknown commit
++            try (BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), Charsets.UTF_8))) {
++                JsonObject obj = new Gson().fromJson(reader, JsonObject.class);
++                String status = obj.get("status").getAsString();
++                switch (status) {
++                    case "identical":
++                        return 0;
++                    case "behind":
++                        return obj.get("behind_by").getAsInt();
++                    default:
++                        return -1;
++                }
++            } catch (JsonSyntaxException | NumberFormatException e) {
++                e.printStackTrace();
++                return -1;
++            }
++        } catch (IOException e) {
++            e.printStackTrace();
++            return -1;
++        }
++    }
++}
+diff --git a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
+index 3a7a498003d70cf9e31acffee70b23dec0be6845..bf8cb65df8e6ecc76e065625e89fd296d71b15b4 100644
+--- a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
++++ b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
+@@ -461,6 +461,11 @@ public final class CraftMagicNumbers implements UnsafeValues {
+     public String getTimingsServerName() {
+         return io.papermc.paper.configuration.GlobalConfiguration.get().timings.serverName;
+     }
++
++    @Override
++    public com.destroystokyo.paper.util.VersionFetcher getVersionFetcher() {
++        return new com.destroystokyo.paper.PaperVersionFetcher();
++    }
+     // Paper end
+ 
+     /**

patches/unapplied/server/0029-Add-version-history-to-version-command.patch

@@ -0,0 +1,214 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Kyle Wood <kyle@denwav.dev>
+Date: Thu, 1 Mar 2018 19:37:52 -0600
+Subject: [PATCH] Add version history to version command
+
+
+diff --git a/src/main/java/com/destroystokyo/paper/PaperVersionFetcher.java b/src/main/java/com/destroystokyo/paper/PaperVersionFetcher.java
+index 22a55be34fde453fedd987173d95b8b347a03588..9d687da5bdf398bb3f6c84cdf1249a7213d09f2e 100644
+--- a/src/main/java/com/destroystokyo/paper/PaperVersionFetcher.java
++++ b/src/main/java/com/destroystokyo/paper/PaperVersionFetcher.java
+@@ -7,6 +7,8 @@ import com.google.gson.*;
+ import net.kyori.adventure.text.Component;
+ import net.kyori.adventure.text.event.ClickEvent;
+ import net.kyori.adventure.text.format.NamedTextColor;
++import net.kyori.adventure.text.format.TextDecoration;
++import net.kyori.adventure.text.TextComponent;
+ 
+ import javax.annotation.Nonnull;
+ import javax.annotation.Nullable;
+@@ -30,7 +32,10 @@ public class PaperVersionFetcher implements VersionFetcher {
+     @Override
+     public Component getVersionMessage(@Nonnull String serverVersion) {
+         String[] parts = serverVersion.substring("git-Paper-".length()).split("[-\\s]");
+-        return getUpdateStatusMessage("PaperMC/Paper", GITHUB_BRANCH_NAME, parts[0]);
++        final Component updateMessage = getUpdateStatusMessage("PaperMC/Paper", GITHUB_BRANCH_NAME, parts[0]);
++        final Component history = getHistory();
++
++        return history != null ? TextComponent.ofChildren(updateMessage, Component.newline(), history) : updateMessage;
+     }
+ 
+     private static @Nullable String getMinecraftVersion() {
+@@ -126,4 +131,19 @@ public class PaperVersionFetcher implements VersionFetcher {
+             return -1;
+         }
+     }
++
++    @Nullable
++    private Component getHistory() {
++        final VersionHistoryManager.VersionData data = VersionHistoryManager.INSTANCE.getVersionData();
++        if (data == null) {
++            return null;
++        }
++
++        final String oldVersion = data.getOldVersion();
++        if (oldVersion == null) {
++            return null;
++        }
++
++        return Component.text("Previous version: " + oldVersion, NamedTextColor.GRAY, TextDecoration.ITALIC);
++    }
+ }
+diff --git a/src/main/java/com/destroystokyo/paper/VersionHistoryManager.java b/src/main/java/com/destroystokyo/paper/VersionHistoryManager.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..aac3f66cb23d260729c2a48d8710a9de2346aa22
+--- /dev/null
++++ b/src/main/java/com/destroystokyo/paper/VersionHistoryManager.java
+@@ -0,0 +1,145 @@
++package com.destroystokyo.paper;
++
++import com.google.common.base.MoreObjects;
++import com.google.gson.Gson;
++import com.google.gson.JsonSyntaxException;
++import java.io.BufferedReader;
++import java.io.BufferedWriter;
++import java.io.IOException;
++import java.nio.charset.StandardCharsets;
++import java.nio.file.Files;
++import java.nio.file.Path;
++import java.nio.file.Paths;
++import java.nio.file.StandardOpenOption;
++import java.util.Objects;
++import java.util.logging.Level;
++import java.util.logging.Logger;
++import org.bukkit.Bukkit;
++
++import javax.annotation.Nonnull;
++import javax.annotation.Nullable;
++
++public enum VersionHistoryManager {
++    INSTANCE;
++
++    private final Gson gson = new Gson();
++
++    private final Logger logger = Bukkit.getLogger();
++
++    private VersionData currentData = null;
++
++    VersionHistoryManager() {
++        final Path path = Paths.get("version_history.json");
++
++        if (Files.exists(path)) {
++            // Basic file santiy checks
++            if (!Files.isRegularFile(path)) {
++                if (Files.isDirectory(path)) {
++                    logger.severe(path + " is a directory, cannot be used for version history");
++                } else {
++                    logger.severe(path + " is not a regular file, cannot be used for version history");
++                }
++                // We can't continue
++                return;
++            }
++
++            try (final BufferedReader reader = Files.newBufferedReader(path, StandardCharsets.UTF_8)) {
++                currentData = gson.fromJson(reader, VersionData.class);
++            } catch (final IOException e) {
++                logger.log(Level.SEVERE, "Failed to read version history file '" + path + "'", e);
++                return;
++            } catch (final JsonSyntaxException e) {
++                logger.log(Level.SEVERE, "Invalid json syntax for file '" + path + "'", e);
++                return;
++            }
++
++            final String version = Bukkit.getVersion();
++            if (version == null) {
++                logger.severe("Failed to retrieve current version");
++                return;
++            }
++
++            if (!version.equals(currentData.getCurrentVersion())) {
++                // The version appears to have changed
++                currentData.setOldVersion(currentData.getCurrentVersion());
++                currentData.setCurrentVersion(version);
++                writeFile(path);
++            }
++        } else {
++            // File doesn't exist, start fresh
++            currentData = new VersionData();
++            // oldVersion is null
++            currentData.setCurrentVersion(Bukkit.getVersion());
++            writeFile(path);
++        }
++    }
++
++    private void writeFile(@Nonnull final Path path) {
++        try (final BufferedWriter writer = Files.newBufferedWriter(
++            path,
++            StandardCharsets.UTF_8,
++            StandardOpenOption.WRITE,
++            StandardOpenOption.CREATE,
++            StandardOpenOption.TRUNCATE_EXISTING
++        )) {
++            gson.toJson(currentData, writer);
++        } catch (final IOException e) {
++            logger.log(Level.SEVERE, "Failed to write to version history file", e);
++        }
++    }
++
++    @Nullable
++    public VersionData getVersionData() {
++        return currentData;
++    }
++
++    public static class VersionData {
++        private String oldVersion;
++
++        private String currentVersion;
++
++        @Nullable
++        public String getOldVersion() {
++            return oldVersion;
++        }
++
++        public void setOldVersion(@Nullable String oldVersion) {
++            this.oldVersion = oldVersion;
++        }
++
++        @Nullable
++        public String getCurrentVersion() {
++            return currentVersion;
++        }
++
++        public void setCurrentVersion(@Nullable String currentVersion) {
++            this.currentVersion = currentVersion;
++        }
++
++        @Override
++        public String toString() {
++            return MoreObjects.toStringHelper(this)
++                .add("oldVersion", oldVersion)
++                .add("currentVersion", currentVersion)
++                .toString();
++        }
++
++        @Override
++        public boolean equals(@Nullable Object o) {
++            if (this == o) {
++                return true;
++            }
++            if (o == null || getClass() != o.getClass()) {
++                return false;
++            }
++            final VersionData versionData = (VersionData) o;
++            return Objects.equals(oldVersion, versionData.oldVersion) &&
++                Objects.equals(currentVersion, versionData.currentVersion);
++        }
++
++        @Override
++        public int hashCode() {
++            return Objects.hash(oldVersion, currentVersion);
++        }
++    }
++}
+diff --git a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
+index ff279901038dfbed6a0b51cc5355ccd17efc6883..2c2d492fdfafb1d2e4e962e6818bd9d7466347d5 100644
+--- a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
++++ b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
+@@ -189,6 +189,7 @@ public class DedicatedServer extends MinecraftServer implements ServerInterface
+         paperConfigurations.initializeWorldDefaultsConfiguration();
+         io.papermc.paper.command.PaperCommands.registerCommands(this);
+         com.destroystokyo.paper.Metrics.PaperMetrics.startMetrics();
++        com.destroystokyo.paper.VersionHistoryManager.INSTANCE.getClass(); // load version history now
+         // Paper end
+ 
+         this.setPvpAllowed(dedicatedserverproperties.pvp);

patches/unapplied/server/0030-Player-affects-spawning-API.patch

@@ -0,0 +1,163 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jedediah Smith <jedediah@silencegreys.com>
+Date: Tue, 1 Mar 2016 14:47:52 -0600
+Subject: [PATCH] Player affects spawning API
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/EntitySelector.java b/src/main/java/net/minecraft/world/entity/EntitySelector.java
+index 984a13267cc1bb960507bc9231359bb4bb837205..668a7c3f36cdbe48e472cb810b27ae4ab39a65d6 100644
+--- a/src/main/java/net/minecraft/world/entity/EntitySelector.java
++++ b/src/main/java/net/minecraft/world/entity/EntitySelector.java
+@@ -29,6 +29,11 @@ public final class EntitySelector {
+     public static final Predicate<Entity> CAN_BE_COLLIDED_WITH = EntitySelector.NO_SPECTATORS.and(Entity::canBeCollidedWith);
+ 
+     private EntitySelector() {}
++    // Paper start
++    public static final Predicate<Entity> PLAYER_AFFECTS_SPAWNING = (entity) -> {
++        return !entity.isSpectator() && entity.isAlive() && entity instanceof Player player && player.affectsSpawning;
++    };
++    // Paper end
+ 
+     public static Predicate<Entity> withinDistance(double x, double y, double z, double max) {
+         double d4 = max * max;
+diff --git a/src/main/java/net/minecraft/world/entity/Mob.java b/src/main/java/net/minecraft/world/entity/Mob.java
+index 9e17033b801676f9db7739bd2ed710744f42defd..3500fd0045ad670de818dc170d9c68da643592e0 100644
+--- a/src/main/java/net/minecraft/world/entity/Mob.java
++++ b/src/main/java/net/minecraft/world/entity/Mob.java
+@@ -840,7 +840,7 @@ public abstract class Mob extends LivingEntity implements Targeting {
+         if (this.level().getDifficulty() == Difficulty.PEACEFUL && this.shouldDespawnInPeaceful()) {
+             this.discard();
+         } else if (!this.isPersistenceRequired() && !this.requiresCustomPersistence()) {
+-            Player entityhuman = this.level().getNearestPlayer(this, -1.0D);
++            Player entityhuman = this.level().findNearbyPlayer(this, -1.0D, EntitySelector.PLAYER_AFFECTS_SPAWNING); // Paper
+ 
+             if (entityhuman != null) {
+                 double d0 = entityhuman.distanceToSqr((Entity) this);
+diff --git a/src/main/java/net/minecraft/world/entity/animal/horse/SkeletonTrapGoal.java b/src/main/java/net/minecraft/world/entity/animal/horse/SkeletonTrapGoal.java
+index c7ab59aa0e2fd0f3e7252647ddb25b82ac604830..8f20239f3ef7ebe41fac8ee6e024c36dafec33c4 100644
+--- a/src/main/java/net/minecraft/world/entity/animal/horse/SkeletonTrapGoal.java
++++ b/src/main/java/net/minecraft/world/entity/animal/horse/SkeletonTrapGoal.java
+@@ -25,7 +25,7 @@ public class SkeletonTrapGoal extends Goal {
+ 
+     @Override
+     public boolean canUse() {
+-        return this.horse.level().hasNearbyAlivePlayer(this.horse.getX(), this.horse.getY(), this.horse.getZ(), 10.0D);
++        return this.horse.level().hasNearbyAlivePlayerThatAffectsSpawning(this.horse.getX(), this.horse.getY(), this.horse.getZ(), 10.0D); // Paper - Affects Spawning API
+     }
+ 
+     @Override
+diff --git a/src/main/java/net/minecraft/world/entity/monster/Silverfish.java b/src/main/java/net/minecraft/world/entity/monster/Silverfish.java
+index 790a9671ad381335c14aac114877f8f6cbdc25a0..754bad0bd38b8a356403f4c90de26de445cbf3c7 100644
+--- a/src/main/java/net/minecraft/world/entity/monster/Silverfish.java
++++ b/src/main/java/net/minecraft/world/entity/monster/Silverfish.java
+@@ -130,7 +130,7 @@ public class Silverfish extends Monster {
+         if (checkAnyLightMonsterSpawnRules(type, world, spawnReason, pos, random)) {
+             Player entityhuman = world.getNearestPlayer((double) pos.getX() + 0.5D, (double) pos.getY() + 0.5D, (double) pos.getZ() + 0.5D, 5.0D, true);
+ 
+-            return entityhuman == null;
++            return !(entityhuman != null && !entityhuman.affectsSpawning) && entityhuman == null; // Paper - Affects Spawning API
+         } else {
+             return false;
+         }
+diff --git a/src/main/java/net/minecraft/world/entity/monster/Zombie.java b/src/main/java/net/minecraft/world/entity/monster/Zombie.java
+index b32e55685d2a3f571828ed3cf69cb985ccaaa931..86dc8bdfdc4eabef2266f3409366b373fb0ae13d 100644
+--- a/src/main/java/net/minecraft/world/entity/monster/Zombie.java
++++ b/src/main/java/net/minecraft/world/entity/monster/Zombie.java
+@@ -325,7 +325,7 @@ public class Zombie extends Monster {
+ 
+                     if (NaturalSpawner.isSpawnPositionOk(entitypositiontypes_surface, this.level(), blockposition, entitytypes) && SpawnPlacements.checkSpawnRules(entitytypes, worldserver, MobSpawnType.REINFORCEMENT, blockposition, this.level().random)) {
+                         entityzombie.setPos((double) i1, (double) j1, (double) k1);
+-                        if (!this.level().hasNearbyAlivePlayer((double) i1, (double) j1, (double) k1, 7.0D) && this.level().isUnobstructed(entityzombie) && this.level().noCollision((Entity) entityzombie) && !this.level().containsAnyLiquid(entityzombie.getBoundingBox())) {
++                        if (!this.level().hasNearbyAlivePlayerThatAffectsSpawning((double) i1, (double) j1, (double) k1, 7.0D) && this.level().isUnobstructed(entityzombie) && this.level().noCollision((Entity) entityzombie) && !this.level().containsAnyLiquid(entityzombie.getBoundingBox())) { // Paper - Affects Spawning API
+                             entityzombie.setTarget(entityliving, EntityTargetEvent.TargetReason.REINFORCEMENT_TARGET, true); // CraftBukkit
+                             entityzombie.finalizeSpawn(worldserver, this.level().getCurrentDifficultyAt(entityzombie.blockPosition()), MobSpawnType.REINFORCEMENT, (SpawnGroupData) null, (CompoundTag) null);
+                             worldserver.addFreshEntityWithPassengers(entityzombie, CreatureSpawnEvent.SpawnReason.REINFORCEMENTS); // CraftBukkit
+diff --git a/src/main/java/net/minecraft/world/entity/player/Player.java b/src/main/java/net/minecraft/world/entity/player/Player.java
+index a76f1ed7b8dc1aacda987931772cb3bf8f29be42..c20753645585143421eb544a03884f0765eafb8b 100644
+--- a/src/main/java/net/minecraft/world/entity/player/Player.java
++++ b/src/main/java/net/minecraft/world/entity/player/Player.java
+@@ -183,6 +183,9 @@ public abstract class Player extends LivingEntity {
+     @Nullable
+     public FishingHook fishing;
+     protected float hurtDir;
++    // Paper start
++    public boolean affectsSpawning = true;
++    // Paper end
+ 
+     // CraftBukkit start
+     public boolean fauxSleeping;
+diff --git a/src/main/java/net/minecraft/world/level/BaseSpawner.java b/src/main/java/net/minecraft/world/level/BaseSpawner.java
+index ad5d8db9fb44f8e47edc82f9ba62872802bfa380..124703a7c043b6c3b651fa1a81c5ba3e99e47938 100644
+--- a/src/main/java/net/minecraft/world/level/BaseSpawner.java
++++ b/src/main/java/net/minecraft/world/level/BaseSpawner.java
+@@ -54,7 +54,7 @@ public abstract class BaseSpawner {
+     }
+ 
+     public boolean isNearPlayer(Level world, BlockPos pos) {
+-        return world.hasNearbyAlivePlayer((double) pos.getX() + 0.5D, (double) pos.getY() + 0.5D, (double) pos.getZ() + 0.5D, (double) this.requiredPlayerRange);
++        return world.hasNearbyAlivePlayerThatAffectsSpawning((double) pos.getX() + 0.5D, (double) pos.getY() + 0.5D, (double) pos.getZ() + 0.5D, (double) this.requiredPlayerRange); // Paper - Affects Spawning API
+     }
+ 
+     public void clientTick(Level world, BlockPos pos) {
+diff --git a/src/main/java/net/minecraft/world/level/EntityGetter.java b/src/main/java/net/minecraft/world/level/EntityGetter.java
+index be6e3e21ad62da01e5e2dd78e300cbc8efdbeb42..ea98625fe7c00743b8df74a24e6d4b75df4189a5 100644
+--- a/src/main/java/net/minecraft/world/level/EntityGetter.java
++++ b/src/main/java/net/minecraft/world/level/EntityGetter.java
+@@ -82,6 +82,11 @@ public interface EntityGetter {
+         }
+     }
+ 
++    // Paper start
++    default @Nullable Player findNearbyPlayer(Entity entity, double maxDistance, @Nullable Predicate<Entity> predicate) {
++        return this.getNearestPlayer(entity.getX(), entity.getY(), entity.getZ(), maxDistance, predicate);
++    }
++    // Paper end
+     @Nullable
+     default Player getNearestPlayer(double x, double y, double z, double maxDistance, @Nullable Predicate<Entity> targetPredicate) {
+         double d = -1.0D;
+@@ -111,6 +116,20 @@ public interface EntityGetter {
+         return this.getNearestPlayer(x, y, z, maxDistance, predicate);
+     }
+ 
++    // Paper start
++    default boolean hasNearbyAlivePlayerThatAffectsSpawning(double x, double y, double z, double range) {
++        for (Player player : this.players()) {
++            if (EntitySelector.PLAYER_AFFECTS_SPAWNING.test(player)) { // combines NO_SPECTATORS and LIVING_ENTITY_STILL_ALIVE with an "affects spawning" check
++                double distanceSqr = player.distanceToSqr(x, y, z);
++                if (range < 0.0D || distanceSqr < range * range) {
++                    return true;
++                }
++            }
++        }
++        return false;
++    }
++    // Paper end
++
+     default boolean hasNearbyAlivePlayer(double x, double y, double z, double range) {
+         for(Player player : this.players()) {
+             if (EntitySelector.NO_SPECTATORS.test(player) && EntitySelector.LIVING_ENTITY_STILL_ALIVE.test(player)) {
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+index 49ca3592012cca981b96434c9807440672a8c165..2b84eca45352db88fb58a981b5caf67b88c92e9e 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+@@ -2229,8 +2229,20 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
+     @Override
+     public String getLocale() {
+         return this.getHandle().locale;
++
++    }
++
++    // Paper start
++    public void setAffectsSpawning(boolean affects) {
++        this.getHandle().affectsSpawning = affects;
+     }
+ 
++    @Override
++    public boolean getAffectsSpawning() {
++        return this.getHandle().affectsSpawning;
++    }
++    // Paper end
++
+     @Override
+     public void updateCommands() {
+         if (this.getHandle().connection == null) return;

patches/unapplied/server/0031-Further-improve-server-tick-loop.patch

@@ -0,0 +1,237 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Tue, 1 Mar 2016 23:09:29 -0600
+Subject: [PATCH] Further improve server tick loop
+
+Improves how the catchup buffer is handled, allowing it to roll both ways
+increasing the effeciency of the thread sleep so it only will sleep once.
+
+Also increases the buffer of the catchup to ensure server stays at 20 TPS unless extreme conditions
+
+Previous implementation did not calculate TPS correctly.
+Switch to a realistic rolling average and factor in std deviation as an extra reporting variable
+
+diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
+index 787f32156b02063adf6426b7430da4c4956b759c..be23196f7bf439c54218debb517dd3f37f6dea6f 100644
+--- a/src/main/java/net/minecraft/server/MinecraftServer.java
++++ b/src/main/java/net/minecraft/server/MinecraftServer.java
+@@ -282,7 +282,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+     public OptionSet options;
+     public org.bukkit.command.ConsoleCommandSender console;
+     public ConsoleReader reader;
+-    public static int currentTick = (int) (System.currentTimeMillis() / 50);
++    public static int currentTick = 0; // Paper - Further improve tick loop
+     public java.util.Queue<Runnable> processQueue = new java.util.concurrent.ConcurrentLinkedQueue<Runnable>();
+     public int autosavePeriod;
+     public Commands vanillaCommandDispatcher;
+@@ -291,7 +291,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+     // Spigot start
+     public static final int TPS = 20;
+     public static final int TICK_TIME = 1000000000 / MinecraftServer.TPS;
+-    private static final int SAMPLE_INTERVAL = 100;
++    private static final int SAMPLE_INTERVAL = 20; // Paper
+     public final double[] recentTps = new double[ 3 ];
+     // Spigot end
+     public final io.papermc.paper.configuration.PaperConfigurations paperConfigurations;
+@@ -951,6 +951,57 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+     {
+         return ( avg * exp ) + ( tps * ( 1 - exp ) );
+     }
++
++    // Paper start - Further improve server tick loop
++    private static final long SEC_IN_NANO = 1000000000;
++    private static final long MAX_CATCHUP_BUFFER = TICK_TIME * TPS * 60L;
++    private long lastTick = 0;
++    private long catchupTime = 0;
++    public final RollingAverage tps1 = new RollingAverage(60);
++    public final RollingAverage tps5 = new RollingAverage(60 * 5);
++    public final RollingAverage tps15 = new RollingAverage(60 * 15);
++
++    public static class RollingAverage {
++        private final int size;
++        private long time;
++        private java.math.BigDecimal total;
++        private int index = 0;
++        private final java.math.BigDecimal[] samples;
++        private final long[] times;
++
++        RollingAverage(int size) {
++            this.size = size;
++            this.time = size * SEC_IN_NANO;
++            this.total = dec(TPS).multiply(dec(SEC_IN_NANO)).multiply(dec(size));
++            this.samples = new java.math.BigDecimal[size];
++            this.times = new long[size];
++            for (int i = 0; i < size; i++) {
++                this.samples[i] = dec(TPS);
++                this.times[i] = SEC_IN_NANO;
++            }
++        }
++
++        private static java.math.BigDecimal dec(long t) {
++            return new java.math.BigDecimal(t);
++        }
++        public void add(java.math.BigDecimal x, long t) {
++            time -= times[index];
++            total = total.subtract(samples[index].multiply(dec(times[index])));
++            samples[index] = x;
++            times[index] = t;
++            time += t;
++            total = total.add(x.multiply(dec(t)));
++            if (++index == size) {
++                index = 0;
++            }
++        }
++
++        public double getAverage() {
++            return total.divide(dec(time), 30, java.math.RoundingMode.HALF_UP).doubleValue();
++        }
++    }
++    private static final java.math.BigDecimal TPS_BASE = new java.math.BigDecimal(1E9).multiply(new java.math.BigDecimal(SAMPLE_INTERVAL));
++    // Paper End
+     // Spigot End
+ 
+     public static volatile RuntimeException chunkSystemCrash; // Paper - rewrite chunk system
+@@ -967,7 +1018,8 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+ 
+             // Spigot start
+             Arrays.fill( recentTps, 20 );
+-            long curTime, tickSection = Util.getMillis(), tickCount = 1;
++            long start = System.nanoTime(), curTime, tickSection = start; // Paper - Further improve server tick loop
++            lastTick = start - TICK_TIME; // Paper
+             while (this.running) {
+                 // Paper start - rewrite chunk system
+                 // guarantee that nothing can stop the server from halting if it can at least still tick
+@@ -975,7 +1027,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+                     throw this.chunkSystemCrash;
+                 }
+                 // Paper end - rewrite chunk system
+-                long i = (curTime = Util.getMillis()) - this.nextTickTime;
++                long i = ((curTime = System.nanoTime()) / (1000L * 1000L)) - this.nextTickTime; // Paper
+ 
+                 if (i > 5000L && this.nextTickTime - this.lastOverloadWarning >= 30000L) { // CraftBukkit
+                     long j = i / 50L;
+@@ -987,12 +1039,18 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+                 }
+ 
+                 ++MinecraftServer.currentTickLong; // Paper
+-                if ( tickCount++ % MinecraftServer.SAMPLE_INTERVAL == 0 )
++                if ( ++MinecraftServer.currentTick % MinecraftServer.SAMPLE_INTERVAL == 0 )
+                 {
+-                    double currentTps = 1E3 / ( curTime - tickSection ) * MinecraftServer.SAMPLE_INTERVAL;
+-                    this.recentTps[0] = MinecraftServer.calcTps( this.recentTps[0], 0.92, currentTps ); // 1/exp(5sec/1min)
+-                    this.recentTps[1] = MinecraftServer.calcTps( this.recentTps[1], 0.9835, currentTps ); // 1/exp(5sec/5min)
+-                    this.recentTps[2] = MinecraftServer.calcTps( this.recentTps[2], 0.9945, currentTps ); // 1/exp(5sec/15min)
++                    final long diff = curTime - tickSection;
++                    java.math.BigDecimal currentTps = TPS_BASE.divide(new java.math.BigDecimal(diff), 30, java.math.RoundingMode.HALF_UP);
++                    tps1.add(currentTps, diff);
++                    tps5.add(currentTps, diff);
++                    tps15.add(currentTps, diff);
++                    // Backwards compat with bad plugins
++                    this.recentTps[0] = tps1.getAverage();
++                    this.recentTps[1] = tps5.getAverage();
++                    this.recentTps[2] = tps15.getAverage();
++                    // Paper end
+                     tickSection = curTime;
+                 }
+                 // Spigot end
+@@ -1002,7 +1060,8 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+                     this.debugCommandProfiler = new MinecraftServer.TimeProfiler(Util.getNanos(), this.tickCount);
+                 }
+ 
+-                MinecraftServer.currentTick = (int) (System.currentTimeMillis() / 50); // CraftBukkit
++                //MinecraftServer.currentTick = (int) (System.currentTimeMillis() / 50); // CraftBukkit // Paper - don't overwrite current tick time
++                lastTick = curTime;
+                 this.nextTickTime += 50L;
+                 this.startMetricsRecordingTick();
+                 this.profiler.push("tick");
+diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+index d4cbe1f06be41c5e54a696898c26a5e499e3ff80..66433478fd82f730705fd383b90145d79189a915 100644
+--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
++++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+@@ -2475,6 +2475,17 @@ public final class CraftServer implements Server {
+         return CraftMagicNumbers.INSTANCE;
+     }
+ 
++    // Paper - Add getTPS API - Further improve tick loop
++    @Override
++    public double[] getTPS() {
++        return new double[] {
++                net.minecraft.server.MinecraftServer.getServer().tps1.getAverage(),
++                net.minecraft.server.MinecraftServer.getServer().tps5.getAverage(),
++                net.minecraft.server.MinecraftServer.getServer().tps15.getAverage()
++        };
++    }
++    // Paper end
++
+     // Spigot start
+     private final org.bukkit.Server.Spigot spigot = new org.bukkit.Server.Spigot()
+     {
+diff --git a/src/main/java/org/spigotmc/TicksPerSecondCommand.java b/src/main/java/org/spigotmc/TicksPerSecondCommand.java
+index 4ab81a99f906e3f28e026d0e50b5b943c1bdcfb5..bf970bf3356a914459c2d6db93537ce2d32c7e18 100644
+--- a/src/main/java/org/spigotmc/TicksPerSecondCommand.java
++++ b/src/main/java/org/spigotmc/TicksPerSecondCommand.java
+@@ -15,6 +15,12 @@ public class TicksPerSecondCommand extends Command
+         this.usageMessage = "/tps";
+         this.setPermission( "bukkit.command.tps" );
+     }
++    // Paper start
++    private static final net.kyori.adventure.text.Component WARN_MSG = net.kyori.adventure.text.Component.text()
++        .append(net.kyori.adventure.text.Component.text("Warning: ", net.kyori.adventure.text.format.NamedTextColor.RED))
++        .append(net.kyori.adventure.text.Component.text("Memory usage on modern garbage collectors is not a stable value and it is perfectly normal to see it reach max. Please do not pay it much attention.", net.kyori.adventure.text.format.NamedTextColor.GOLD))
++        .build();
++    // Paper end
+ 
+     @Override
+     public boolean execute(CommandSender sender, String currentAlias, String[] args)
+@@ -24,22 +30,40 @@ public class TicksPerSecondCommand extends Command
+             return true;
+         }
+ 
+-        StringBuilder sb = new StringBuilder( ChatColor.GOLD + "TPS from last 1m, 5m, 15m: " );
+-        for ( double tps : MinecraftServer.getServer().recentTps )
+-        {
+-            sb.append( this.format( tps ) );
+-            sb.append( ", " );
++        // Paper start - Further improve tick handling
++        double[] tps = org.bukkit.Bukkit.getTPS();
++        net.kyori.adventure.text.Component[] tpsAvg = new net.kyori.adventure.text.Component[tps.length];
++
++        for ( int i = 0; i < tps.length; i++) {
++            tpsAvg[i] = TicksPerSecondCommand.format( tps[i] );
++        }
++
++        net.kyori.adventure.text.TextComponent.Builder builder = net.kyori.adventure.text.Component.text();
++        builder.append(net.kyori.adventure.text.Component.text("TPS from last 1m, 5m, 15m: ", net.kyori.adventure.text.format.NamedTextColor.GOLD));
++        builder.append(net.kyori.adventure.text.Component.join(net.kyori.adventure.text.JoinConfiguration.commas(true), tpsAvg));
++        sender.sendMessage(builder.asComponent());
++        if (args.length > 0 && args[0].equals("mem") && sender.hasPermission("bukkit.command.tpsmemory")) {
++            sender.sendMessage(net.kyori.adventure.text.Component.text()
++                .append(net.kyori.adventure.text.Component.text("Current Memory Usage: ", net.kyori.adventure.text.format.NamedTextColor.GOLD))
++                .append(net.kyori.adventure.text.Component.text(((Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory()) / (1024 * 1024)) + "/" + (Runtime.getRuntime().totalMemory() / (1024 * 1024)) + " mb (Max: " + (Runtime.getRuntime().maxMemory() / (1024 * 1024)) + " mb)", net.kyori.adventure.text.format.NamedTextColor.GREEN))
++            );
++            if (!this.hasShownMemoryWarning) {
++                sender.sendMessage(WARN_MSG);
++                this.hasShownMemoryWarning = true;
++            }
+         }
+-        sender.sendMessage( sb.substring( 0, sb.length() - 2 ) );
+-        sender.sendMessage(ChatColor.GOLD + "Current Memory Usage: " + ChatColor.GREEN + ((Runtime.getRuntime().totalMemory() - Runtime.getRuntime().freeMemory()) / (1024 * 1024)) + "/" + (Runtime.getRuntime().totalMemory() / (1024 * 1024)) + " mb (Max: "
+-                + (Runtime.getRuntime().maxMemory() / (1024 * 1024)) + " mb)");
++        // Paper end
+ 
+         return true;
+     }
+ 
+-    private String format(double tps)
++    private boolean hasShownMemoryWarning; // Paper
++    private static net.kyori.adventure.text.Component format(double tps) // Paper - Made static
+     {
+-        return ( ( tps > 18.0 ) ? ChatColor.GREEN : ( tps > 16.0 ) ? ChatColor.YELLOW : ChatColor.RED ).toString()
+-                + ( ( tps > 20.0 ) ? "*" : "" ) + Math.min( Math.round( tps * 100.0 ) / 100.0, 20.0 );
++        // Paper
++        net.kyori.adventure.text.format.TextColor color = ( ( tps > 18.0 ) ? net.kyori.adventure.text.format.NamedTextColor.GREEN : ( tps > 16.0 ) ? net.kyori.adventure.text.format.NamedTextColor.YELLOW : net.kyori.adventure.text.format.NamedTextColor.RED );
++        String amount = Math.min(Math.round(tps * 100.0) / 100.0, 20.0) + (tps > 21.0  ? "*" : ""); // Paper - only print * at 21, we commonly peak to 20.02 as the tick sleep is not accurate enough, stop the noise
++        return net.kyori.adventure.text.Component.text(amount, color);
++        // Paper end
+     }
+ }

patches/unapplied/server/0032-Only-refresh-abilities-if-needed.patch

@@ -0,0 +1,25 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Zach Brown <zach.brown@destroystokyo.com>
+Date: Tue, 1 Mar 2016 23:12:03 -0600
+Subject: [PATCH] Only refresh abilities if needed
+
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+index 2b84eca45352db88fb58a981b5caf67b88c92e9e..1486d48e3c710ec733cd7cc6c07fb6e11d1e1d93 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+@@ -1904,12 +1904,13 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
+ 
+     @Override
+     public void setFlying(boolean value) {
++        boolean needsUpdate = getHandle().getAbilities().flying != value; // Paper - Only refresh abilities if needed
+         if (!this.getAllowFlight()) {
+             Preconditions.checkArgument(!value, "Player is not allowed to fly (check #getAllowFlight())");
+         }
+ 
+         this.getHandle().getAbilities().flying = value;
+-        this.getHandle().onUpdateAbilities();
++        if (needsUpdate) this.getHandle().onUpdateAbilities(); // Paper - Only refresh abilities if needed
+     }
+ 
+     @Override

patches/unapplied/server/0033-Entity-Origin-API.patch

@@ -0,0 +1,158 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Byteflux <byte@byteflux.net>
+Date: Tue, 1 Mar 2016 23:45:08 -0600
+Subject: [PATCH] Entity Origin API
+
+
+diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
+index 995be2fd84ce343d7430d9658f91868e653da43d..4af495424d60632b770cd1cb02157bbcf34366e8 100644
+--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
++++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
+@@ -2363,6 +2363,15 @@ public class ServerLevel extends Level implements WorldGenLevel {
+ 
+             entity.updateDynamicGameEventListener(DynamicGameEventListener::add);
+             entity.valid = true; // CraftBukkit
++            // Paper start - Set origin location when the entity is being added to the world
++            if (entity.getOriginVector() == null) {
++                entity.setOrigin(entity.getBukkitEntity().getLocation());
++            }
++            // Default to current world if unknown, gross assumption but entities rarely change world
++            if (entity.getOriginWorld() == null) {
++                entity.setOrigin(entity.getOriginVector().toLocation(getWorld()));
++            }
++            // Paper end
+         }
+ 
+         public void onTrackingEnd(Entity entity) {
+diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
+index 48ac0559e32a1b6b26a00978cf9ef6a1c13e674b..98933377d46b2dd69d5d477e7f1d6ddff96ee2b4 100644
+--- a/src/main/java/net/minecraft/world/entity/Entity.java
++++ b/src/main/java/net/minecraft/world/entity/Entity.java
+@@ -312,7 +312,27 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+     public long activatedTick = Integer.MIN_VALUE;
+     public void inactiveTick() { }
+     // Spigot end
++    // Paper start
++    @javax.annotation.Nullable
++    private org.bukkit.util.Vector origin;
++    @javax.annotation.Nullable
++    private UUID originWorld;
++
++    public void setOrigin(@javax.annotation.Nonnull Location location) {
++        this.origin = location.toVector();
++        this.originWorld = location.getWorld().getUID();
++    }
+ 
++    @javax.annotation.Nullable
++    public org.bukkit.util.Vector getOriginVector() {
++        return this.origin != null ? this.origin.clone() : null;
++    }
++
++    @javax.annotation.Nullable
++    public UUID getOriginWorld() {
++        return this.originWorld;
++    }
++    // Paper end
+     public float getBukkitYaw() {
+         return this.yRot;
+     }
+@@ -2062,6 +2082,15 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+                 this.bukkitEntity.storeBukkitValues(nbt);
+             }
+             // CraftBukkit end
++            // Paper start - Save the entity's origin location
++            if (this.origin != null) {
++                UUID originWorld = this.originWorld != null ? this.originWorld : this.level != null ? this.level.getWorld().getUID() : null;
++                if (originWorld != null) {
++                    nbt.putUUID("Paper.OriginWorld", originWorld);
++                }
++                nbt.put("Paper.Origin", this.newDoubleList(origin.getX(), origin.getY(), origin.getZ()));
++            }
++            // Paper end
+             return nbt;
+         } catch (Throwable throwable) {
+             CrashReport crashreport = CrashReport.forThrowable(throwable, "Saving entity NBT");
+@@ -2189,6 +2218,20 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+             }
+             // CraftBukkit end
+ 
++            // Paper start - Restore the entity's origin location
++            ListTag originTag = nbt.getList("Paper.Origin", 6);
++            if (!originTag.isEmpty()) {
++                UUID originWorld = null;
++                if (nbt.contains("Paper.OriginWorld")) {
++                    originWorld = nbt.getUUID("Paper.OriginWorld");
++                } else if (this.level != null) {
++                    originWorld = this.level.getWorld().getUID();
++                }
++                this.originWorld = originWorld;
++                origin = new org.bukkit.util.Vector(originTag.getDouble(0), originTag.getDouble(1), originTag.getDouble(2));
++            }
++            // Paper end
++
+         } catch (Throwable throwable) {
+             CrashReport crashreport = CrashReport.forThrowable(throwable, "Loading entity NBT");
+             CrashReportCategory crashreportsystemdetails = crashreport.addCategory("Entity being loaded");
+diff --git a/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java b/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java
+index 2d32a2b41100b0e32ec64c8724734f22c7c883e2..93c162fd126824ab0af39568efe0dec21d846810 100644
+--- a/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java
++++ b/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java
+@@ -343,6 +343,14 @@ public class FallingBlockEntity extends Entity {
+             this.blockState = Blocks.SAND.defaultBlockState();
+         }
+ 
++        // Paper start - Try and load origin location from the old NBT tags for backwards compatibility
++        if (nbt.contains("SourceLoc_x")) {
++            int srcX = nbt.getInt("SourceLoc_x");
++            int srcY = nbt.getInt("SourceLoc_y");
++            int srcZ = nbt.getInt("SourceLoc_z");
++            this.setOrigin(new org.bukkit.Location(this.level().getWorld(), srcX, srcY, srcZ));
++        }
++        // Paper end
+     }
+ 
+     public void setHurtsEntities(float fallHurtAmount, int fallHurtMax) {
+diff --git a/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java b/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java
+index 415b8822f0dfb14d49bccb2a10ac04025891ddf7..89fd5d6b373d2705dccc2f22663048f4c2aaa60f 100644
+--- a/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java
++++ b/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java
+@@ -119,6 +119,14 @@ public class PrimedTnt extends Entity implements TraceableEntity {
+     @Override
+     protected void readAdditionalSaveData(CompoundTag nbt) {
+         this.setFuse(nbt.getShort("Fuse"));
++        // Paper start - Try and load origin location from the old NBT tags for backwards compatibility
++        if (nbt.contains("SourceLoc_x")) {
++            int srcX = nbt.getInt("SourceLoc_x");
++            int srcY = nbt.getInt("SourceLoc_y");
++            int srcZ = nbt.getInt("SourceLoc_z");
++            this.setOrigin(new org.bukkit.Location(this.level().getWorld(), srcX, srcY, srcZ));
++        }
++        // Paper end
+     }
+ 
+     @Nullable
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
+index 672153a664b7b48bfb18d12efc271e296b5aa428..1ccaf59479dce7b913037f232bb37bdbc75b98a8 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
+@@ -1256,5 +1256,20 @@ public abstract class CraftEntity implements org.bukkit.entity.Entity {
+ 
+         return ret;
+     }
++
++    @Override
++    public Location getOrigin() {
++        Vector originVector = this.getHandle().getOriginVector();
++        if (originVector == null) {
++            return null;
++        }
++        World world = this.getWorld();
++        if (this.getHandle().getOriginWorld() != null) {
++            world = org.bukkit.Bukkit.getWorld(this.getHandle().getOriginWorld());
++        }
++
++        //noinspection ConstantConditions
++        return originVector.toLocation(world);
++    }
+     // Paper end
+ }

patches/unapplied/server/0034-Prevent-tile-entity-and-entity-crashes.patch

@@ -0,0 +1,66 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Tue, 1 Mar 2016 23:52:34 -0600
+Subject: [PATCH] Prevent tile entity and entity crashes
+
+
+diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
+index fb78a91d1ab77f909823422c6d4e2ef7ed10c9c3..a022d009b72e366ed69d05087457b712970c0b84 100644
+--- a/src/main/java/net/minecraft/world/level/Level.java
++++ b/src/main/java/net/minecraft/world/level/Level.java
+@@ -728,11 +728,11 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
+         try {
+             tickConsumer.accept(entity);
+         } catch (Throwable throwable) {
+-            CrashReport crashreport = CrashReport.forThrowable(throwable, "Ticking entity");
+-            CrashReportCategory crashreportsystemdetails = crashreport.addCategory("Entity being ticked");
+-
+-            entity.fillCrashReportCategory(crashreportsystemdetails);
+-            throw new ReportedException(crashreport);
++            // Paper start - Prevent tile entity and entity crashes
++            final String msg = String.format("Entity threw exception at %s:%s,%s,%s", entity.level().getWorld().getName(), entity.getX(), entity.getY(), entity.getZ());
++            MinecraftServer.LOGGER.error(msg, throwable);
++            entity.discard();
++            // Paper end
+         }
+     }
+ 
+diff --git a/src/main/java/net/minecraft/world/level/block/entity/BlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/BlockEntity.java
+index b300d12e9e00519028b53aca9c3fb01f589eaa91..63acd109a79ed752a05df3d4f1b99309297c2055 100644
+--- a/src/main/java/net/minecraft/world/level/block/entity/BlockEntity.java
++++ b/src/main/java/net/minecraft/world/level/block/entity/BlockEntity.java
+@@ -213,7 +213,12 @@ public abstract class BlockEntity {
+             return minecraftkey + " // " + this.getClass().getCanonicalName();
+         });
+         if (this.level != null) {
+-            CrashReportCategory.populateBlockDetails(crashReportSection, this.level, this.worldPosition, this.getBlockState());
++            // Paper start - Prevent TileEntity and Entity crashes
++            BlockState block = this.getBlockState();
++            if (block != null) {
++                CrashReportCategory.populateBlockDetails(crashReportSection, this.level, this.worldPosition, block);
++            }
++            // Paper end
+             CrashReportCategory.populateBlockDetails(crashReportSection, this.level, this.worldPosition, this.level.getBlockState(this.worldPosition));
+         }
+     }
+diff --git a/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java b/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java
+index a0c88a15be577d552e61bfa923a6e566b1cfcc49..1f635d06dcff8672e9bdaf29fba6fdf39618f893 100644
+--- a/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java
++++ b/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java
+@@ -1146,11 +1146,11 @@ public class LevelChunk extends ChunkAccess {
+ 
+                         gameprofilerfiller.pop();
+                     } catch (Throwable throwable) {
+-                        CrashReport crashreport = CrashReport.forThrowable(throwable, "Ticking block entity");
+-                        CrashReportCategory crashreportsystemdetails = crashreport.addCategory("Block entity being ticked");
+-
+-                        this.blockEntity.fillCrashReportCategory(crashreportsystemdetails);
+-                        throw new ReportedException(crashreport);
++                        // Paper start - Prevent tile entity and entity crashes
++                        final String msg = String.format("BlockEntity threw exception at %s:%s,%s,%s", LevelChunk.this.getLevel().getWorld().getName(), this.getPos().getX(), this.getPos().getY(), this.getPos().getZ());
++                        net.minecraft.server.MinecraftServer.LOGGER.error(msg, throwable);
++                        LevelChunk.this.removeBlockEntity(this.getPos());
++                        // Paper end
+                         // Spigot start
+                     } finally {
+                         this.blockEntity.tickTimer.stopTiming();

patches/unapplied/server/0035-Configurable-top-of-nether-void-damage.patch

@@ -0,0 +1,49 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Zach Brown <zach.brown@destroystokyo.com>
+Date: Tue, 1 Mar 2016 23:58:50 -0600
+Subject: [PATCH] Configurable top of nether void damage
+
+Co-authored-by: Jake Potrebic <jake.m.potrebic@gmail.com>
+
+diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
+index 98933377d46b2dd69d5d477e7f1d6ddff96ee2b4..30360e9e8787b893a360ba899d8fac657634de75 100644
+--- a/src/main/java/net/minecraft/world/entity/Entity.java
++++ b/src/main/java/net/minecraft/world/entity/Entity.java
+@@ -715,7 +715,11 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+     }
+ 
+     public void checkBelowWorld() {
+-        if (this.getY() < (double) (this.level().getMinBuildHeight() - 64)) {
++        // Paper start - Configurable nether ceiling damage
++        if (this.getY() < (double) (this.level.getMinBuildHeight() - 64) || (this.level.getWorld().getEnvironment() == org.bukkit.World.Environment.NETHER
++            && this.level.paperConfig().environment.netherCeilingVoidDamageHeight.test(v -> this.getY() >= v)
++            && (!(this instanceof Player player) || !player.getAbilities().invulnerable))) {
++            // Paper end
+             this.onBelowWorld();
+         }
+ 
+diff --git a/src/main/java/net/minecraft/world/level/portal/PortalForcer.java b/src/main/java/net/minecraft/world/level/portal/PortalForcer.java
+index 02e3322ec41108fe9275510e2daa833d180353dc..0762bb248b3bd43a06e89aa1893a6189f0e13866 100644
+--- a/src/main/java/net/minecraft/world/level/portal/PortalForcer.java
++++ b/src/main/java/net/minecraft/world/level/portal/PortalForcer.java
+@@ -55,7 +55,7 @@ public class PortalForcer {
+         Optional<PoiRecord> optional = villageplace.getInSquare((holder) -> {
+             return holder.is(PoiTypes.NETHER_PORTAL);
+         }, blockposition, i, PoiManager.Occupancy.ANY).filter((villageplacerecord) -> {
+-            return worldborder.isWithinBounds(villageplacerecord.getPos());
++            return worldborder.isWithinBounds(villageplacerecord.getPos()) && !(this.level.getTypeKey() == net.minecraft.world.level.dimension.LevelStem.NETHER && this.level.paperConfig().environment.netherCeilingVoidDamageHeight.test(v -> villageplacerecord.getPos().getY() >= v)); // Paper - don't teleport into void damage
+         }).sorted(Comparator.comparingDouble((PoiRecord villageplacerecord) -> { // CraftBukkit - decompile error
+             return villageplacerecord.getPos().distSqr(blockposition);
+         }).thenComparingInt((villageplacerecord) -> {
+@@ -90,6 +90,11 @@ public class PortalForcer {
+         BlockPos blockposition2 = null;
+         WorldBorder worldborder = this.level.getWorldBorder();
+         int i = Math.min(this.level.getMaxBuildHeight(), this.level.getMinBuildHeight() + this.level.getLogicalHeight()) - 1;
++        // Paper start - if ceiling void damage is enabled, make sure the max height doesn't exceed the void damage height
++        if (this.level.getTypeKey() == net.minecraft.world.level.dimension.LevelStem.NETHER && this.level.paperConfig().environment.netherCeilingVoidDamageHeight.enabled()) {
++            i = Math.min(i, this.level.paperConfig().environment.netherCeilingVoidDamageHeight.intValue() - 1);
++        }
++        // Paper end
+         BlockPos.MutableBlockPos blockposition_mutableblockposition = blockposition.mutable();
+         Iterator iterator = BlockPos.spiralAround(blockposition, createRadius, Direction.EAST, Direction.SOUTH).iterator(); // CraftBukkit
+ 

patches/unapplied/server/0036-Check-online-mode-before-converting-and-renaming-pla.patch

@@ -0,0 +1,19 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Zach Brown <zach.brown@destroystokyo.com>
+Date: Wed, 2 Mar 2016 00:03:55 -0600
+Subject: [PATCH] Check online mode before converting and renaming player data
+
+
+diff --git a/src/main/java/net/minecraft/world/level/storage/PlayerDataStorage.java b/src/main/java/net/minecraft/world/level/storage/PlayerDataStorage.java
+index e2c0ab0ab06b15dcfa6ce8c82ad4136f2be33b5c..984b75e12b5feab63767e030df925b3cbf26d559 100644
+--- a/src/main/java/net/minecraft/world/level/storage/PlayerDataStorage.java
++++ b/src/main/java/net/minecraft/world/level/storage/PlayerDataStorage.java
+@@ -56,7 +56,7 @@ public class PlayerDataStorage {
+             File file = new File(this.playerDir, player.getStringUUID() + ".dat");
+             // Spigot Start
+             boolean usingWrongFile = false;
+-            if ( !file.exists() )
++            if ( org.bukkit.Bukkit.getOnlineMode() && !file.exists() ) // Paper - Check online mode first
+             {
+                 file = new File( this.playerDir, java.util.UUID.nameUUIDFromBytes( ( "OfflinePlayer:" + player.getScoreboardName() ).getBytes( "UTF-8" ) ).toString() + ".dat");
+                 if ( file.exists() )

patches/unapplied/server/0037-Always-tick-falling-blocks.patch

@@ -0,0 +1,18 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Zach Brown <zach.brown@destroystokyo.com>
+Date: Wed, 2 Mar 2016 00:32:25 -0600
+Subject: [PATCH] Always tick falling blocks
+
+
+diff --git a/src/main/java/org/spigotmc/ActivationRange.java b/src/main/java/org/spigotmc/ActivationRange.java
+index b47b740186c200c420dcb4d1537a93c743a887c1..a526816f261de2a75a04be82596a7d8d674ead4a 100644
+--- a/src/main/java/org/spigotmc/ActivationRange.java
++++ b/src/main/java/org/spigotmc/ActivationRange.java
+@@ -89,6 +89,7 @@ public class ActivationRange
+                 || entity instanceof AbstractHurtingProjectile
+                 || entity instanceof LightningBolt
+                 || entity instanceof PrimedTnt
++                || entity instanceof net.minecraft.world.entity.item.FallingBlockEntity // Paper - Always tick falling blocks
+                 || entity instanceof EndCrystal
+                 || entity instanceof FireworkRocketEntity
+                 || entity instanceof ThrownTrident )

patches/unapplied/server/0038-Configurable-end-credits.patch

@@ -0,0 +1,18 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: DoctorDark <doctordark11@gmail.com>
+Date: Wed, 16 Mar 2016 02:21:39 -0500
+Subject: [PATCH] Configurable end credits
+
+
+diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
+index 32ef9f1ae0c35e927133572ebb6fbf50b0729a63..e42c07dfba3c18464f1f8e35fbd764812d8c4e50 100644
+--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
++++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
+@@ -1066,6 +1066,7 @@ public class ServerPlayer extends Player {
+             this.unRide();
+             this.serverLevel().removePlayerImmediately(this, Entity.RemovalReason.CHANGED_DIMENSION);
+             if (!this.wonGame) {
++                if (this.level().paperConfig().misc.disableEndCredits) this.seenCredits = true; // Paper - Toggle to always disable end credits
+                 this.wonGame = true;
+                 this.connection.send(new ClientboundGameEventPacket(ClientboundGameEventPacket.WIN_GAME, this.seenCredits ? 0.0F : 1.0F));
+                 this.seenCredits = true;

patches/unapplied/server/0039-Fix-lag-from-explosions-processing-dead-entities.patch

@@ -0,0 +1,19 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Iceee <andrew@opticgaming.tv>
+Date: Wed, 2 Mar 2016 01:39:52 -0600
+Subject: [PATCH] Fix lag from explosions processing dead entities
+
+
+diff --git a/src/main/java/net/minecraft/world/level/Explosion.java b/src/main/java/net/minecraft/world/level/Explosion.java
+index 31bc6aa727a1828cd353a0bdf51e40baabb50203..e360022498b91a8371b33d84bf6fff96c503999d 100644
+--- a/src/main/java/net/minecraft/world/level/Explosion.java
++++ b/src/main/java/net/minecraft/world/level/Explosion.java
+@@ -202,7 +202,7 @@ public class Explosion {
+         int i1 = Mth.floor(this.y + (double) f2 + 1.0D);
+         int j1 = Mth.floor(this.z - (double) f2 - 1.0D);
+         int k1 = Mth.floor(this.z + (double) f2 + 1.0D);
+-        List<Entity> list = this.level.getEntities(this.source, new AABB((double) i, (double) l, (double) j1, (double) j, (double) i1, (double) k1));
++        List<Entity> list = this.level.getEntities(this.source, new AABB((double) i, (double) l, (double) j1, (double) j, (double) i1, (double) k1), (com.google.common.base.Predicate<Entity>) entity -> entity.isAlive() && !entity.isSpectator()); // Paper - Fix lag from explosions processing dead entities
+         Vec3 vec3d = new Vec3(this.x, this.y, this.z);
+ 
+         for (int l1 = 0; l1 < list.size(); ++l1) {

patches/unapplied/server/0040-Optimize-explosions.patch

@@ -0,0 +1,133 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Byteflux <byte@byteflux.net>
+Date: Wed, 2 Mar 2016 11:59:48 -0600
+Subject: [PATCH] Optimize explosions
+
+The process of determining an entity's exposure from explosions can be
+expensive when there are hundreds or more entities in range.
+
+This patch adds a per-tick cache that is used for storing and retrieving
+an entity's exposure during an explosion.
+
+diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
+index be23196f7bf439c54218debb517dd3f37f6dea6f..ebfc20247ac5a548e6616a099b8885db9c7a8d25 100644
+--- a/src/main/java/net/minecraft/server/MinecraftServer.java
++++ b/src/main/java/net/minecraft/server/MinecraftServer.java
+@@ -1403,6 +1403,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+ 
+             this.profiler.pop();
+             this.profiler.pop();
++            worldserver.explosionDensityCache.clear(); // Paper - Optimize explosions
+         }
+ 
+         this.profiler.popPush("connection");
+diff --git a/src/main/java/net/minecraft/world/level/Explosion.java b/src/main/java/net/minecraft/world/level/Explosion.java
+index e360022498b91a8371b33d84bf6fff96c503999d..925d37ca684e7e6a3ad88e6e040f3599225f0b1d 100644
+--- a/src/main/java/net/minecraft/world/level/Explosion.java
++++ b/src/main/java/net/minecraft/world/level/Explosion.java
+@@ -221,7 +221,7 @@ public class Explosion {
+                         d8 /= d11;
+                         d9 /= d11;
+                         d10 /= d11;
+-                        double d12 = (double) Explosion.getSeenPercent(vec3d, entity);
++                        double d12 = this.getBlockDensity(vec3d, entity); // Paper - Optimize explosions
+                         double d13 = (1.0D - d7) * d12;
+ 
+                         // CraftBukkit start
+@@ -513,4 +513,84 @@ public class Explosion {
+ 
+         private BlockInteraction() {}
+     }
++    // Paper start - Optimize explosions
++    private float getBlockDensity(Vec3 vec3d, Entity entity) {
++        if (!this.level.paperConfig().environment.optimizeExplosions) {
++            return getSeenPercent(vec3d, entity);
++        }
++        CacheKey key = new CacheKey(this, entity.getBoundingBox());
++        Float blockDensity = this.level.explosionDensityCache.get(key);
++        if (blockDensity == null) {
++            blockDensity = getSeenPercent(vec3d, entity);
++            this.level.explosionDensityCache.put(key, blockDensity);
++        }
++
++        return blockDensity;
++    }
++
++    static class CacheKey {
++        private final Level world;
++        private final double posX, posY, posZ;
++        private final double minX, minY, minZ;
++        private final double maxX, maxY, maxZ;
++
++        public CacheKey(Explosion explosion, AABB aabb) {
++            this.world = explosion.level;
++            this.posX = explosion.x;
++            this.posY = explosion.y;
++            this.posZ = explosion.z;
++            this.minX = aabb.minX;
++            this.minY = aabb.minY;
++            this.minZ = aabb.minZ;
++            this.maxX = aabb.maxX;
++            this.maxY = aabb.maxY;
++            this.maxZ = aabb.maxZ;
++        }
++
++        @Override
++        public boolean equals(Object o) {
++            if (this == o) return true;
++            if (o == null || getClass() != o.getClass()) return false;
++
++            CacheKey cacheKey = (CacheKey) o;
++
++            if (Double.compare(cacheKey.posX, posX) != 0) return false;
++            if (Double.compare(cacheKey.posY, posY) != 0) return false;
++            if (Double.compare(cacheKey.posZ, posZ) != 0) return false;
++            if (Double.compare(cacheKey.minX, minX) != 0) return false;
++            if (Double.compare(cacheKey.minY, minY) != 0) return false;
++            if (Double.compare(cacheKey.minZ, minZ) != 0) return false;
++            if (Double.compare(cacheKey.maxX, maxX) != 0) return false;
++            if (Double.compare(cacheKey.maxY, maxY) != 0) return false;
++            if (Double.compare(cacheKey.maxZ, maxZ) != 0) return false;
++            return world.equals(cacheKey.world);
++        }
++
++        @Override
++        public int hashCode() {
++            int result;
++            long temp;
++            result = world.hashCode();
++            temp = Double.doubleToLongBits(posX);
++            result = 31 * result + (int) (temp ^ (temp >>> 32));
++            temp = Double.doubleToLongBits(posY);
++            result = 31 * result + (int) (temp ^ (temp >>> 32));
++            temp = Double.doubleToLongBits(posZ);
++            result = 31 * result + (int) (temp ^ (temp >>> 32));
++            temp = Double.doubleToLongBits(minX);
++            result = 31 * result + (int) (temp ^ (temp >>> 32));
++            temp = Double.doubleToLongBits(minY);
++            result = 31 * result + (int) (temp ^ (temp >>> 32));
++            temp = Double.doubleToLongBits(minZ);
++            result = 31 * result + (int) (temp ^ (temp >>> 32));
++            temp = Double.doubleToLongBits(maxX);
++            result = 31 * result + (int) (temp ^ (temp >>> 32));
++            temp = Double.doubleToLongBits(maxY);
++            result = 31 * result + (int) (temp ^ (temp >>> 32));
++            temp = Double.doubleToLongBits(maxZ);
++            result = 31 * result + (int) (temp ^ (temp >>> 32));
++            return result;
++        }
++    }
++    // Paper end
+ }
+diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
+index a022d009b72e366ed69d05087457b712970c0b84..da553430864689c426ad2c1dd74ad7d1134ffbae 100644
+--- a/src/main/java/net/minecraft/world/level/Level.java
++++ b/src/main/java/net/minecraft/world/level/Level.java
+@@ -167,6 +167,7 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
+     private org.spigotmc.TickLimiter entityLimiter;
+     private org.spigotmc.TickLimiter tileLimiter;
+     private int tileTickPosition;
++    public final Map<Explosion.CacheKey, Float> explosionDensityCache = new HashMap<>(); // Paper - Optimize explosions
+ 
+     public CraftWorld getWorld() {
+         return this.world;

patches/unapplied/server/0041-Disable-explosion-knockback.patch

@@ -0,0 +1,53 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Sudzzy <originmc@outlook.com>
+Date: Wed, 2 Mar 2016 14:48:03 -0600
+Subject: [PATCH] Disable explosion knockback
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
+index 5bdebdd16939480afac536ce7aaa4fe720021e74..5dda05f7bf08dec8b48fe0b87aa227c3e0392c6f 100644
+--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
++++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
+@@ -1444,10 +1444,12 @@ public abstract class LivingEntity extends Entity implements Attackable {
+                 }
+             }
+ 
++            boolean knockbackCancelled = this.level().paperConfig().environment.disableExplosionKnockback && source.is(DamageTypeTags.IS_EXPLOSION) && this instanceof net.minecraft.world.entity.player.Player; // Paper - Disable explosion knockback
+             if (flag1) {
+                 if (flag) {
+                     this.level().broadcastEntityEvent(this, (byte) 29);
+                 } else {
++                    if (!knockbackCancelled) // Paper - Disable explosion knockback
+                     this.level().broadcastDamageEvent(this, source);
+                 }
+ 
+@@ -1471,6 +1473,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
+                 }
+             }
+ 
++            if (knockbackCancelled) this.level().broadcastEntityEvent(this, (byte) 2); // Paper - Disable explosion knockback
+             if (this.isDeadOrDying()) {
+                 if (!this.checkTotemDeathProtection(source)) {
+                     SoundEvent soundeffect = this.getDeathSound();
+diff --git a/src/main/java/net/minecraft/world/level/Explosion.java b/src/main/java/net/minecraft/world/level/Explosion.java
+index 925d37ca684e7e6a3ad88e6e040f3599225f0b1d..401076c5350429052994d98c414a83a21f908010 100644
+--- a/src/main/java/net/minecraft/world/level/Explosion.java
++++ b/src/main/java/net/minecraft/world/level/Explosion.java
+@@ -262,7 +262,7 @@ public class Explosion {
+                         if (entity instanceof LivingEntity) {
+                             LivingEntity entityliving = (LivingEntity) entity;
+ 
+-                            d14 = ProtectionEnchantment.getExplosionKnockbackAfterDampener(entityliving, d13);
++                            d14 = entity instanceof Player && level.paperConfig().environment.disableExplosionKnockback ? 0 : ProtectionEnchantment.getExplosionKnockbackAfterDampener(entityliving, d13); // Paper - disable explosion knockback
+                         } else {
+                             d14 = d13;
+                         }
+@@ -276,7 +276,7 @@ public class Explosion {
+                         if (entity instanceof Player) {
+                             Player entityhuman = (Player) entity;
+ 
+-                            if (!entityhuman.isSpectator() && (!entityhuman.isCreative() || !entityhuman.getAbilities().flying)) {
++                            if (!entityhuman.isSpectator() && (!entityhuman.isCreative() || !entityhuman.getAbilities().flying) && !level.paperConfig().environment.disableExplosionKnockback) { // Paper - Disable explosion knockback
+                                 this.hitPlayers.put(entityhuman, vec3d1);
+                             }
+                         }

patches/unapplied/server/0042-Disable-thunder.patch

@@ -0,0 +1,19 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Sudzzy <originmc@outlook.com>
+Date: Wed, 2 Mar 2016 14:52:43 -0600
+Subject: [PATCH] Disable thunder
+
+
+diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
+index 4af495424d60632b770cd1cb02157bbcf34366e8..a2a7568499bddb3c515ef8155e6e7e827f2a5b97 100644
+--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
++++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
+@@ -833,7 +833,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
+         gameprofilerfiller.push("thunder");
+         BlockPos blockposition;
+ 
+-        if (flag && this.isThundering() && this.spigotConfig.thunderChance > 0 && this.random.nextInt(this.spigotConfig.thunderChance) == 0) { // Spigot
++        if (!this.paperConfig().environment.disableThunder && flag && this.isThundering() && this.spigotConfig.thunderChance > 0 && this.random.nextInt(this.spigotConfig.thunderChance) == 0) { // Spigot // Paper - disable thunder
+             blockposition = this.findLightningTargetAround(this.getBlockRandomPos(j, 0, k, 15));
+             if (this.isRainingAt(blockposition)) {
+                 DifficultyInstance difficultydamagescaler = this.getCurrentDifficultyAt(blockposition);

patches/unapplied/server/0043-Disable-ice-and-snow.patch

@@ -0,0 +1,19 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Sudzzy <originmc@outlook.com>
+Date: Wed, 2 Mar 2016 14:57:24 -0600
+Subject: [PATCH] Disable ice and snow
+
+
+diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
+index a2a7568499bddb3c515ef8155e6e7e827f2a5b97..e253531f5da93d2a5b328e1af6eef2a6d9a72bc1 100644
+--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
++++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
+@@ -864,7 +864,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
+         int l;
+         int i1;
+ 
+-        if (this.random.nextInt(16) == 0) {
++        if (!this.paperConfig().environment.disableIceAndSnow && this.random.nextInt(16) == 0) { // Paper - Disable ice and snow
+             blockposition = this.getHeightmapPos(Heightmap.Types.MOTION_BLOCKING, this.getBlockRandomPos(j, 0, k, 15));
+             BlockPos blockposition1 = blockposition.below();
+             Biome biomebase = (Biome) this.getBiome(blockposition).value();

patches/unapplied/server/0044-Configurable-mob-spawner-tick-rate.patch

@@ -0,0 +1,39 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Sudzzy <originmc@outlook.com>
+Date: Wed, 2 Mar 2016 15:03:53 -0600
+Subject: [PATCH] Configurable mob spawner tick rate
+
+
+diff --git a/src/main/java/net/minecraft/world/level/BaseSpawner.java b/src/main/java/net/minecraft/world/level/BaseSpawner.java
+index 213fed3a2b32226fc128d213ee3e9fa3ae76e88e..64bd7d265a45575ce46c1a792f90cadc76763871 100644
+--- a/src/main/java/net/minecraft/world/level/BaseSpawner.java
++++ b/src/main/java/net/minecraft/world/level/BaseSpawner.java
+@@ -45,6 +45,7 @@ public abstract class BaseSpawner {
+     public int maxNearbyEntities = 6;
+     public int requiredPlayerRange = 16;
+     public int spawnRange = 4;
++    private int tickDelay = 0; // Paper
+ 
+     public BaseSpawner() {}
+ 
+@@ -79,13 +80,18 @@ public abstract class BaseSpawner {
+     }
+ 
+     public void serverTick(ServerLevel world, BlockPos pos) {
++        // Paper start - Configurable mob spawner tick rate
++        if (spawnDelay > 0 && --tickDelay > 0) return;
++        tickDelay = world.paperConfig().tickRates.mobSpawner;
++        if (tickDelay == -1) { return; } // If disabled
++        // Paper end
+         if (this.isNearPlayer(world, pos)) {
+-            if (this.spawnDelay == -1) {
++            if (this.spawnDelay < -tickDelay) {
+                 this.delay(world, pos);
+             }
+ 
+             if (this.spawnDelay > 0) {
+-                --this.spawnDelay;
++                this.spawnDelay -= tickDelay; // Paper
+             } else {
+                 boolean flag = false;
+                 RandomSource randomsource = world.getRandom();

patches/unapplied/server/0045-Implement-PlayerLocaleChangeEvent.patch

@@ -0,0 +1,48 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Isaac Moore <rmsy@me.com>
+Date: Tue, 19 Apr 2016 14:09:31 -0500
+Subject: [PATCH] Implement PlayerLocaleChangeEvent
+
+
+diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
+index 1136a3fe673680fcaca9b9768543ffada040153f..f157646156a659d0b87b1f72fd0d1d06d66bc543 100644
+--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
++++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
+@@ -1853,7 +1853,7 @@ public class ServerPlayer extends Player {
+         }
+     }
+ 
+-    public String locale = "en_us"; // CraftBukkit - add, lowercase
++    public String locale = null; // CraftBukkit - add, lowercase // Paper - default to null
+     public java.util.Locale adventure$locale = java.util.Locale.US; // Paper
+     public void updateOptions(ServerboundClientInformationPacket packet) {
+         // CraftBukkit start
+@@ -1861,9 +1861,10 @@ public class ServerPlayer extends Player {
+             PlayerChangedMainHandEvent event = new PlayerChangedMainHandEvent(this.getBukkitEntity(), getMainArm() == HumanoidArm.LEFT ? MainHand.LEFT : MainHand.RIGHT);
+             this.server.server.getPluginManager().callEvent(event);
+         }
+-        if (!this.locale.equals(packet.language)) {
++        if (this.locale == null || !this.locale.equals(packet.language)) { // Paper - check for null
+             PlayerLocaleChangeEvent event = new PlayerLocaleChangeEvent(this.getBukkitEntity(), packet.language);
+             this.server.server.getPluginManager().callEvent(event);
++            this.server.server.getPluginManager().callEvent(new com.destroystokyo.paper.event.player.PlayerLocaleChangeEvent(this.getBukkitEntity(), this.locale, packet.language)); // Paper
+         }
+         this.locale = packet.language;
+         // Paper start
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+index 1486d48e3c710ec733cd7cc6c07fb6e11d1e1d93..f5b05eb97f059cfb4d6d22d0a180c5fd8a203f66 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+@@ -2229,8 +2229,10 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
+ 
+     @Override
+     public String getLocale() {
+-        return this.getHandle().locale;
+-
++        // Paper start - Locale change event
++        final String locale = this.getHandle().locale;
++        return locale != null ? locale : "en_us";
++        // Paper end
+     }
+ 
+     // Paper start

patches/unapplied/server/0046-Add-BeaconEffectEvent.patch

@@ -0,0 +1,62 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Byteflux <byte@byteflux.net>
+Date: Wed, 2 Mar 2016 23:30:53 -0600
+Subject: [PATCH] Add BeaconEffectEvent
+
+
+diff --git a/src/main/java/net/minecraft/world/level/block/entity/BeaconBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/BeaconBlockEntity.java
+index ff49285fe50e8361c2d4529bf1dda5b54a90e3fe..8b79df496e1fad57e8c5c0aa97d0d84ab0deed1e 100644
+--- a/src/main/java/net/minecraft/world/level/block/entity/BeaconBlockEntity.java
++++ b/src/main/java/net/minecraft/world/level/block/entity/BeaconBlockEntity.java
+@@ -41,6 +41,10 @@ import net.minecraft.world.phys.AABB;
+ import org.bukkit.craftbukkit.potion.CraftPotionUtil;
+ import org.bukkit.potion.PotionEffect;
+ // CraftBukkit end
++// Paper start
++import org.bukkit.craftbukkit.event.CraftEventFactory;
++import com.destroystokyo.paper.event.block.BeaconEffectEvent;
++// Paper end
+ 
+ public class BeaconBlockEntity extends BlockEntity implements MenuProvider, Nameable {
+ 
+@@ -280,15 +284,23 @@ public class BeaconBlockEntity extends BlockEntity implements MenuProvider, Name
+         }
+     }
+ 
+-    private static void applyEffect(List list, MobEffect mobeffectlist, int j, int b0) {
+-        {
++    private static void applyEffect(List list, MobEffect effects, int i, int b0, boolean isPrimary, BlockPos worldPosition) { // Paper - BeaconEffectEvent
++        if (!list.isEmpty()) { // Paper - BeaconEffectEvent
+             Iterator iterator = list.iterator();
+ 
+             Player entityhuman;
++            // Paper start - BeaconEffectEvent
++            org.bukkit.block.Block block = ((Player) list.get(0)).level().getWorld().getBlockAt(worldPosition.getX(), worldPosition.getY(), worldPosition.getZ());
++            PotionEffect effect = CraftPotionUtil.toBukkit(new MobEffectInstance(effects, i, b0, true, true));
++            // Paper end
+ 
+             while (iterator.hasNext()) {
+-                entityhuman = (Player) iterator.next();
+-                entityhuman.addEffect(new MobEffectInstance(mobeffectlist, j, b0, true, true), org.bukkit.event.entity.EntityPotionEffectEvent.Cause.BEACON);
++                // Paper start - BeaconEffectEvent
++                entityhuman = (ServerPlayer) iterator.next();
++                BeaconEffectEvent event = new BeaconEffectEvent(block, effect, (org.bukkit.entity.Player) entityhuman.getBukkitEntity(), isPrimary);
++                if (CraftEventFactory.callEvent(event).isCancelled()) continue;
++                entityhuman.addEffect(new MobEffectInstance(CraftPotionUtil.fromBukkit(event.getEffect())), org.bukkit.event.entity.EntityPotionEffectEvent.Cause.BEACON);
++                // Paper end
+             }
+         }
+     }
+@@ -311,10 +323,10 @@ public class BeaconBlockEntity extends BlockEntity implements MenuProvider, Name
+             int j = BeaconBlockEntity.getLevel(beaconLevel);
+             List list = BeaconBlockEntity.getHumansInRange(world, pos, beaconLevel);
+ 
+-            BeaconBlockEntity.applyEffect(list, primaryEffect, j, b0);
++            BeaconBlockEntity.applyEffect(list, primaryEffect, j, b0, true, pos); // Paper - BeaconEffectEvent
+ 
+             if (BeaconBlockEntity.hasSecondaryEffect(beaconLevel, primaryEffect, secondaryEffect)) {
+-                BeaconBlockEntity.applyEffect(list, secondaryEffect, j, 0);
++                BeaconBlockEntity.applyEffect(list, secondaryEffect, j, 0, false, pos); // Paper - BeaconEffectEvent
+             }
+         }
+ 

patches/unapplied/server/0047-Configurable-container-update-tick-rate.patch

@@ -0,0 +1,32 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Sudzzy <originmc@outlook.com>
+Date: Wed, 2 Mar 2016 23:34:44 -0600
+Subject: [PATCH] Configurable container update tick rate
+
+
+diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
+index ee422a97a63749172f9f9643513ae9ab111c2400..321d14f241df1246061ba73b2488f5ab5326a734 100644
+--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
++++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
+@@ -241,6 +241,7 @@ public class ServerPlayer extends Player {
+     private int containerCounter;
+     public int latency;
+     public boolean wonGame;
++    private int containerUpdateDelay; // Paper
+ 
+     // CraftBukkit start
+     public String displayName;
+@@ -672,7 +673,12 @@ public class ServerPlayer extends Player {
+             --this.invulnerableTime;
+         }
+ 
+-        this.containerMenu.broadcastChanges();
++        // Paper start - Configurable container update tick rate
++        if (--containerUpdateDelay <= 0) {
++            this.containerMenu.broadcastChanges();
++            containerUpdateDelay = this.level().paperConfig().tickRates.containerUpdate;
++        }
++        // Paper end
+         if (!this.level().isClientSide && !this.containerMenu.stillValid(this)) {
+             this.closeContainer();
+             this.containerMenu = this.inventoryMenu;

patches/unapplied/server/0048-Use-UserCache-for-player-heads.patch

@@ -0,0 +1,25 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Techcable <Techcable@outlook.com>
+Date: Wed, 2 Mar 2016 23:42:37 -0600
+Subject: [PATCH] Use UserCache for player heads
+
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaSkull.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaSkull.java
+index 30865eece58ba2f3c991f9d373a128ada3385b4f..85b9baad074634a2f21c15adbb393ebc5924bdd8 100644
+--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaSkull.java
++++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaSkull.java
+@@ -208,7 +208,13 @@ class CraftMetaSkull extends CraftMetaItem implements SkullMeta {
+         if (name == null) {
+             this.setProfile(null);
+         } else {
+-            this.setProfile(new GameProfile(null, name));
++            // Paper start - Use Online Players Skull
++            GameProfile newProfile = null;
++            net.minecraft.server.level.ServerPlayer player = net.minecraft.server.MinecraftServer.getServer().getPlayerList().getPlayerByName(name);
++            if (player != null) newProfile = player.getGameProfile();
++            if (newProfile == null) newProfile = new GameProfile(null, name);
++            this.setProfile(newProfile);
++            // Paper end
+         }
+ 
+         return true;

patches/unapplied/server/0049-Disable-spigot-tick-limiters.patch

@@ -0,0 +1,21 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Zach Brown <zach.brown@destroystokyo.com>
+Date: Wed, 2 Mar 2016 23:45:17 -0600
+Subject: [PATCH] Disable spigot tick limiters
+
+
+diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
+index da553430864689c426ad2c1dd74ad7d1134ffbae..78041052d7ab2e6b60405ce7e02468458650db22 100644
+--- a/src/main/java/net/minecraft/world/level/Level.java
++++ b/src/main/java/net/minecraft/world/level/Level.java
+@@ -694,9 +694,7 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
+         // Spigot start
+         // Iterator iterator = this.blockEntityTickers.iterator();
+         int tilesThisCycle = 0;
+-        for (this.tileLimiter.initTick();
+-                tilesThisCycle < this.blockEntityTickers.size() && (tilesThisCycle % 10 != 0 || this.tileLimiter.shouldContinue());
+-                this.tileTickPosition++, tilesThisCycle++) {
++        for (tileTickPosition = 0; tileTickPosition < this.blockEntityTickers.size(); tileTickPosition++) { // Paper - Disable tick limiters
+             this.tileTickPosition = (this.tileTickPosition < this.blockEntityTickers.size()) ? this.tileTickPosition : 0;
+             TickingBlockEntity tickingblockentity = (TickingBlockEntity) this.blockEntityTickers.get(tileTickPosition);
+             // Spigot start

patches/unapplied/server/0050-Add-PlayerInitialSpawnEvent.patch

@@ -0,0 +1,38 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Steve Anton <anxuiz.nx@gmail.com>
+Date: Thu, 3 Mar 2016 00:09:38 -0600
+Subject: [PATCH] Add PlayerInitialSpawnEvent
+
+For modifying a player's initial spawn location as they join the server
+
+This is a duplicate API from spigot, so use our duplicate subclass and
+improve setPosition to use raw
+
+== AT ==
+public net.minecraft.world.entity.Entity setRot(FF)V
+
+diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java
+index 0363ad83af48ddcec37b5bd2fee49c3b1350576c..d9c45fb7a97797de2af2811f816110cc6c3681f6 100644
+--- a/src/main/java/net/minecraft/server/players/PlayerList.java
++++ b/src/main/java/net/minecraft/server/players/PlayerList.java
+@@ -240,7 +240,7 @@ public abstract class PlayerList {
+ 
+         // Spigot start - spawn location event
+         Player spawnPlayer = player.getBukkitEntity();
+-        org.spigotmc.event.player.PlayerSpawnLocationEvent ev = new org.spigotmc.event.player.PlayerSpawnLocationEvent(spawnPlayer, spawnPlayer.getLocation());
++        org.spigotmc.event.player.PlayerSpawnLocationEvent ev = new com.destroystokyo.paper.event.player.PlayerInitialSpawnEvent(spawnPlayer, spawnPlayer.getLocation()); // Paper use our duplicate event
+         this.cserver.getPluginManager().callEvent(ev);
+ 
+         Location loc = ev.getSpawnLocation();
+@@ -248,7 +248,10 @@ public abstract class PlayerList {
+ 
+         player.spawnIn(worldserver1);
+         player.gameMode.setLevel((ServerLevel) player.level());
+-        player.absMoveTo(loc.getX(), loc.getY(), loc.getZ(), loc.getYaw(), loc.getPitch());
++        // Paper start - set raw so we aren't fully joined to the world (not added to chunk or world)
++        player.setPosRaw(loc.getX(), loc.getY(), loc.getZ());
++        player.setRot(loc.getYaw(), loc.getPitch());
++        // Paper end
+         // Spigot end
+ 
+         // CraftBukkit - Moved message to after join

patches/unapplied/server/0051-Configurable-Disabling-Cat-Chest-Detection.patch

@@ -0,0 +1,23 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Thu, 3 Mar 2016 01:13:45 -0600
+Subject: [PATCH] Configurable Disabling Cat Chest Detection
+
+Offers a gameplay feature to stop cats from blocking chests
+
+diff --git a/src/main/java/net/minecraft/world/level/block/ChestBlock.java b/src/main/java/net/minecraft/world/level/block/ChestBlock.java
+index d702444f7186fe2339f481cdced3ad3e34f1b3f1..5e22d175b1048a58802cdf64ac70a8b56329e915 100644
+--- a/src/main/java/net/minecraft/world/level/block/ChestBlock.java
++++ b/src/main/java/net/minecraft/world/level/block/ChestBlock.java
+@@ -361,6 +361,11 @@ public class ChestBlock extends AbstractChestBlock<ChestBlockEntity> implements
+     }
+ 
+     private static boolean isCatSittingOnChest(LevelAccessor world, BlockPos pos) {
++        // Paper start - Option to disable chest cat detection
++        if (world.getMinecraftWorld().paperConfig().entities.behavior.disableChestCatDetection) {
++            return false;
++        }
++        // Paper end
+         List<Cat> list = world.getEntitiesOfClass(Cat.class, new AABB((double) pos.getX(), (double) (pos.getY() + 1), (double) pos.getZ(), (double) (pos.getX() + 1), (double) (pos.getY() + 2), (double) (pos.getZ() + 1)));
+ 
+         if (!list.isEmpty()) {

patches/unapplied/server/0052-Improve-Player-chat-API-handling.patch

@@ -0,0 +1,80 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Thu, 3 Mar 2016 01:17:12 -0600
+Subject: [PATCH] Improve Player chat API handling
+
+Properly split up the chat and command handling to reflect the server now
+having separate packets for both, and the client always using the correct packet. Text
+from a chat packet should never be parsed into a command, even if it starts with the `/`
+character.
+
+Add a missing async catcher and improve Spigot's async catcher error message.
+
+== AT ==
+public net.minecraft.server.network.ServerGamePacketListenerImpl isChatMessageIllegal(Ljava/lang/String;)Z
+
+Co-authored-by: Jake Potrebic <jake.m.potrebic@gmail.com>
+Co-authored-by: SoSeDiK <mrsosedik@gmail.com>
+
+diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+index 2c922afde237ca0e56ee6dc067f2989434d4d08c..a4f0cb93a08136888a81f1a8e7ed1d56f92e2195 100644
+--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
++++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+@@ -2063,7 +2063,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
+         }
+         OutgoingChatMessage outgoing = OutgoingChatMessage.create(original);
+ 
+-        if (!async && s.startsWith("/")) {
++        if (false && !async && s.startsWith("/")) { // Paper - Don't handle commands in chat logic
+             this.handleCommand(s);
+         } else if (this.player.getChatVisibility() == ChatVisiblity.SYSTEM) {
+             // Do nothing, this is coming from a plugin
+@@ -2147,7 +2147,8 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
+         }
+     }
+ 
+-    private void handleCommand(String s) {
++    public void handleCommand(String s) { // Paper - private -> public
++        org.spigotmc.AsyncCatcher.catchOp("Command Dispatched Async: " + s); // Paper - Add async catcher
+         co.aikar.timings.MinecraftTimings.playerCommandTimer.startTiming(); // Paper
+         if ( org.spigotmc.SpigotConfig.logCommands ) // Spigot
+         this.LOGGER.info(this.player.getScoreboardName() + " issued server command: " + s);
+diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+index 66433478fd82f730705fd383b90145d79189a915..fd9457a02f36b0230eb2d4fd549419f46d4b8da3 100644
+--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
++++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+@@ -886,7 +886,7 @@ public final class CraftServer implements Server {
+     public boolean dispatchCommand(CommandSender sender, String commandLine) {
+         Preconditions.checkArgument(sender != null, "sender cannot be null");
+         Preconditions.checkArgument(commandLine != null, "commandLine cannot be null");
+-        org.spigotmc.AsyncCatcher.catchOp("command dispatch"); // Spigot
++        org.spigotmc.AsyncCatcher.catchOp("Command Dispatched Async: " + commandLine); // Spigot // Paper - Include command in error message
+ 
+         if (this.commandMap.dispatch(sender, commandLine)) {
+             return true;
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+index f5b05eb97f059cfb4d6d22d0a180c5fd8a203f66..a3f85b1cf8b03da90f2461cbe42dd18a630f2255 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+@@ -492,7 +492,20 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
+ 
+         if (this.getHandle().connection == null) return;
+ 
+-        this.getHandle().connection.chat(msg, PlayerChatMessage.system(msg), false);
++        // Paper start - Improve chat handling
++        if (ServerGamePacketListenerImpl.isChatMessageIllegal(msg)) {
++            this.getHandle().connection.disconnect(Component.translatable("multiplayer.disconnect.illegal_characters"));
++        } else {
++            if (msg.startsWith("/")) {
++                this.getHandle().connection.handleCommand(msg);
++            } else {
++                final PlayerChatMessage playerChatMessage = PlayerChatMessage.system(msg).withResult(new net.minecraft.network.chat.ChatDecorator.ModernResult(Component.literal(msg), true, false));
++                // TODO chat decorating
++                // TODO text filtering
++                this.getHandle().connection.chat(msg, playerChatMessage, false);
++            }
++        }
++        // Paper end
+     }
+ 
+     @Override

patches/unapplied/server/0053-All-chunks-are-slime-spawn-chunks-toggle.patch

@@ -0,0 +1,32 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: vemacs <d@nkmem.es>
+Date: Thu, 3 Mar 2016 01:19:22 -0600
+Subject: [PATCH] All chunks are slime spawn chunks toggle
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/monster/Slime.java b/src/main/java/net/minecraft/world/entity/monster/Slime.java
+index 23cb972ca3fde409be0d6517ef8f1c58dab47ff4..476a9b2db5deac803f1cb3c2cbe88b69cc3da8e5 100644
+--- a/src/main/java/net/minecraft/world/entity/monster/Slime.java
++++ b/src/main/java/net/minecraft/world/entity/monster/Slime.java
+@@ -318,7 +318,7 @@ public class Slime extends Mob implements Enemy {
+             }
+ 
+             ChunkPos chunkcoordintpair = new ChunkPos(pos);
+-            boolean flag = WorldgenRandom.seedSlimeChunk(chunkcoordintpair.x, chunkcoordintpair.z, ((WorldGenLevel) world).getSeed(), world.getMinecraftWorld().spigotConfig.slimeSeed).nextInt(10) == 0; // Spigot
++            boolean flag = world.getMinecraftWorld().paperConfig().entities.spawning.allChunksAreSlimeChunks || WorldgenRandom.seedSlimeChunk(chunkcoordintpair.x, chunkcoordintpair.z, ((WorldGenLevel) world).getSeed(), world.getMinecraftWorld().spigotConfig.slimeSeed).nextInt(10) == 0; // Spigot // Paper
+ 
+             if (random.nextInt(10) == 0 && flag && pos.getY() < 40) {
+                 return checkMobSpawnRules(type, world, spawnReason, pos, random);
+diff --git a/src/main/java/org/bukkit/craftbukkit/CraftChunk.java b/src/main/java/org/bukkit/craftbukkit/CraftChunk.java
+index 33677ec811ceab939c419bf7d31b99585e9a1ef1..8ae78690748b2cb5d5186d8859871c1630e10130 100644
+--- a/src/main/java/org/bukkit/craftbukkit/CraftChunk.java
++++ b/src/main/java/org/bukkit/craftbukkit/CraftChunk.java
+@@ -169,7 +169,7 @@ public class CraftChunk implements Chunk {
+     @Override
+     public boolean isSlimeChunk() {
+         // 987234911L is deterimined in EntitySlime when seeing if a slime can spawn in a chunk
+-        return WorldgenRandom.seedSlimeChunk(this.getX(), this.getZ(), this.getWorld().getSeed(), worldServer.spigotConfig.slimeSeed).nextInt(10) == 0;
++        return this.worldServer.paperConfig().entities.spawning.allChunksAreSlimeChunks || WorldgenRandom.seedSlimeChunk(this.getX(), this.getZ(), this.getWorld().getSeed(), worldServer.spigotConfig.slimeSeed).nextInt(10) == 0; // Paper
+     }
+ 
+     @Override

patches/unapplied/server/0054-Expose-server-CommandMap.patch

@@ -0,0 +1,18 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: kashike <kashike@vq.lc>
+Date: Thu, 3 Mar 2016 02:15:57 -0600
+Subject: [PATCH] Expose server CommandMap
+
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+index fd9457a02f36b0230eb2d4fd549419f46d4b8da3..10ef586cbbeae40dbdf01232c416ba132229daa2 100644
+--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
++++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+@@ -2015,6 +2015,7 @@ public final class CraftServer implements Server {
+         return this.helpMap;
+     }
+ 
++    @Override // Paper - add override
+     public SimpleCommandMap getCommandMap() {
+         return this.commandMap;
+     }

patches/unapplied/server/0055-Be-a-bit-more-informative-in-maxHealth-exception.patch

@@ -0,0 +1,24 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: kashike <kashike@vq.lc>
+Date: Thu, 3 Mar 2016 02:18:39 -0600
+Subject: [PATCH] Be a bit more informative in maxHealth exception
+
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
+index 0c2dcaf8aac3c95f469ffef84bfd52fbc687129f..27830b5909660038a51ef7fc4ca78d9df64f562a 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
+@@ -102,7 +102,12 @@ public class CraftLivingEntity extends CraftEntity implements LivingEntity {
+     @Override
+     public void setHealth(double health) {
+         health = (float) health;
+-        Preconditions.checkArgument(health >= 0 && health <= this.getMaxHealth(), "Health value (%s) must be between 0 and %s", health, this.getMaxHealth());
++        // Paper start - Be more informative
++        Preconditions.checkArgument(health >= 0 && health <= this.getMaxHealth(),
++            "Health value (%s) must be between 0 and %s. (attribute base value: %s%s)",
++            health, this.getMaxHealth(), this.getHandle().getAttribute(Attributes.MAX_HEALTH).getBaseValue(), this instanceof CraftPlayer ? ", player: " + this.getName() : ""
++        );
++        // Paper end
+ 
+         // during world generation, we don't want to run logic for dropping items and xp
+         if (this.getHandle().generation && health == 0) {

patches/unapplied/server/0056-Player-Tab-List-and-Title-APIs.patch

@@ -0,0 +1,176 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Techcable <Techcable@outlook.com>
+Date: Thu, 3 Mar 2016 02:32:10 -0600
+Subject: [PATCH] Player Tab List and Title APIs
+
+
+diff --git a/src/main/java/net/minecraft/network/FriendlyByteBuf.java b/src/main/java/net/minecraft/network/FriendlyByteBuf.java
+index 9020bc6d9ff6bc0c9b3f00470813f3258554cf45..c2f56f4628e42c130e4c55030432cb43aa0d8458 100644
+--- a/src/main/java/net/minecraft/network/FriendlyByteBuf.java
++++ b/src/main/java/net/minecraft/network/FriendlyByteBuf.java
+@@ -548,6 +548,11 @@ public class FriendlyByteBuf extends ByteBuf {
+     public FriendlyByteBuf writeComponent(final net.kyori.adventure.text.Component component) {
+         return this.writeUtf(PaperAdventure.asJsonString(component, this.adventure$locale), 262144);
+     }
++
++    @Deprecated
++    public FriendlyByteBuf writeComponent(final net.md_5.bungee.api.chat.BaseComponent[] component) {
++        return this.writeUtf(net.md_5.bungee.chat.ComponentSerializer.toString(component), 262144);
++    }
+     // Paper end
+ 
+     public FriendlyByteBuf writeComponent(Component text) {
+diff --git a/src/main/java/net/minecraft/network/protocol/game/ClientboundSetSubtitleTextPacket.java b/src/main/java/net/minecraft/network/protocol/game/ClientboundSetSubtitleTextPacket.java
+index c44a276d201fdfa5144d45d319d7761583c60639..f68a1a6dc6add9496e25cb52c318e086e356e2bb 100644
+--- a/src/main/java/net/minecraft/network/protocol/game/ClientboundSetSubtitleTextPacket.java
++++ b/src/main/java/net/minecraft/network/protocol/game/ClientboundSetSubtitleTextPacket.java
+@@ -7,6 +7,7 @@ import net.minecraft.network.protocol.Packet;
+ public class ClientboundSetSubtitleTextPacket implements Packet<ClientGamePacketListener> {
+     private final Component text;
+     public net.kyori.adventure.text.Component adventure$text; // Paper
++    public net.md_5.bungee.api.chat.BaseComponent[] components; // Paper
+ 
+     public ClientboundSetSubtitleTextPacket(Component subtitle) {
+         this.text = subtitle;
+@@ -21,6 +22,8 @@ public class ClientboundSetSubtitleTextPacket implements Packet<ClientGamePacket
+         // Paper start
+         if (this.adventure$text != null) {
+             buf.writeComponent(this.adventure$text);
++        } else if (this.components != null) {
++            buf.writeComponent(this.components);
+         } else
+         // Paper end
+         buf.writeComponent(this.text);
+diff --git a/src/main/java/net/minecraft/network/protocol/game/ClientboundSetTitleTextPacket.java b/src/main/java/net/minecraft/network/protocol/game/ClientboundSetTitleTextPacket.java
+index bd808eb312ade7122973a47f4b96505829511da5..bf0f9cab7c66c089f35b851e799ba4a43420b437 100644
+--- a/src/main/java/net/minecraft/network/protocol/game/ClientboundSetTitleTextPacket.java
++++ b/src/main/java/net/minecraft/network/protocol/game/ClientboundSetTitleTextPacket.java
+@@ -7,6 +7,7 @@ import net.minecraft.network.protocol.Packet;
+ public class ClientboundSetTitleTextPacket implements Packet<ClientGamePacketListener> {
+     private final Component text;
+     public net.kyori.adventure.text.Component adventure$text; // Paper
++    public net.md_5.bungee.api.chat.BaseComponent[] components; // Paper
+ 
+     public ClientboundSetTitleTextPacket(Component title) {
+         this.text = title;
+@@ -21,6 +22,8 @@ public class ClientboundSetTitleTextPacket implements Packet<ClientGamePacketLis
+         // Paper start
+         if (this.adventure$text != null) {
+             buf.writeComponent(this.adventure$text);
++        } else if (this.components != null) {
++            buf.writeComponent(this.components);
+         } else
+         // Paper end
+         buf.writeComponent(this.text);
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+index d9031a89cc087fef8c39bcb93c68d07b8b2ab474..b6f8885196f806174f7d611c778fc1f74129d6d4 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+@@ -1,5 +1,6 @@
+ package org.bukkit.craftbukkit.entity;
+ 
++import com.destroystokyo.paper.Title;
+ import com.google.common.base.Preconditions;
+ import com.google.common.collect.ImmutableSet;
+ import com.google.common.io.BaseEncoding;
+@@ -334,6 +335,100 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
+         }
+     }
+ 
++    // Paper start
++    @Override
++    public void setPlayerListHeaderFooter(BaseComponent[] header, BaseComponent[] footer) {
++         if (header != null) {
++             String headerJson = net.md_5.bungee.chat.ComponentSerializer.toString(header);
++             playerListHeader = net.kyori.adventure.text.serializer.gson.GsonComponentSerializer.gson().deserialize(headerJson);
++         } else {
++             playerListHeader = null;
++         }
++
++        if (footer != null) {
++             String footerJson = net.md_5.bungee.chat.ComponentSerializer.toString(footer);
++             playerListFooter = net.kyori.adventure.text.serializer.gson.GsonComponentSerializer.gson().deserialize(footerJson);
++        } else {
++             playerListFooter = null;
++         }
++
++         updatePlayerListHeaderFooter();
++    }
++
++    @Override
++    public void setPlayerListHeaderFooter(BaseComponent header, BaseComponent footer) {
++        this.setPlayerListHeaderFooter(header == null ? null : new BaseComponent[]{header},
++                footer == null ? null : new BaseComponent[]{footer});
++    }
++
++
++    @Override
++    public void setTitleTimes(int fadeInTicks, int stayTicks, int fadeOutTicks) {
++        getHandle().connection.send(new ClientboundSetTitlesAnimationPacket(fadeInTicks, stayTicks, fadeOutTicks));
++    }
++
++    @Override
++    public void setSubtitle(BaseComponent[] subtitle) {
++        final ClientboundSetSubtitleTextPacket packet = new ClientboundSetSubtitleTextPacket((net.minecraft.network.chat.Component) null);
++        packet.components = subtitle;
++        getHandle().connection.send(packet);
++    }
++
++    @Override
++    public void setSubtitle(BaseComponent subtitle) {
++        setSubtitle(new BaseComponent[]{subtitle});
++    }
++
++    @Override
++    public void showTitle(BaseComponent[] title) {
++        final ClientboundSetTitleTextPacket packet = new ClientboundSetTitleTextPacket((net.minecraft.network.chat.Component) null);
++        packet.components = title;
++        getHandle().connection.send(packet);
++    }
++
++    @Override
++    public void showTitle(BaseComponent title) {
++        showTitle(new BaseComponent[]{title});
++    }
++
++    @Override
++    public void showTitle(BaseComponent[] title, BaseComponent[] subtitle, int fadeInTicks, int stayTicks, int fadeOutTicks) {
++        setTitleTimes(fadeInTicks, stayTicks, fadeOutTicks);
++        setSubtitle(subtitle);
++        showTitle(title);
++    }
++
++    @Override
++    public void showTitle(BaseComponent title, BaseComponent subtitle, int fadeInTicks, int stayTicks, int fadeOutTicks) {
++        setTitleTimes(fadeInTicks, stayTicks, fadeOutTicks);
++        setSubtitle(subtitle);
++        showTitle(title);
++    }
++
++    @Override
++    public void sendTitle(Title title) {
++        Preconditions.checkNotNull(title, "Title is null");
++        setTitleTimes(title.getFadeIn(), title.getStay(), title.getFadeOut());
++        setSubtitle(title.getSubtitle() == null ? new BaseComponent[0] : title.getSubtitle());
++        showTitle(title.getTitle());
++    }
++
++    @Override
++    public void updateTitle(Title title) {
++        Preconditions.checkNotNull(title, "Title is null");
++        setTitleTimes(title.getFadeIn(), title.getStay(), title.getFadeOut());
++        if (title.getSubtitle() != null) {
++            setSubtitle(title.getSubtitle());
++        }
++        showTitle(title.getTitle());
++    }
++
++    @Override
++    public void hideTitle() {
++        getHandle().connection.send(new ClientboundClearTitlesPacket(false));
++    }
++    // Paper end
++
+     @Override
+     public String getDisplayName() {
+         if(true) return io.papermc.paper.adventure.DisplayNames.getLegacy(this); // Paper

patches/unapplied/server/0057-Add-configurable-portal-search-radius.patch

@@ -0,0 +1,38 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Joseph Hirschfeld <joe@ibj.io>
+Date: Thu, 3 Mar 2016 02:46:17 -0600
+Subject: [PATCH] Add configurable portal search radius
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
+index 0d888e4c819d627119d1a97be8318027b95d46cb..03d5ea7094223be15c96c223ca81bdb8685cc1e7 100644
+--- a/src/main/java/net/minecraft/world/entity/Entity.java
++++ b/src/main/java/net/minecraft/world/entity/Entity.java
+@@ -3164,7 +3164,13 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+                 double d0 = DimensionType.getTeleportationScale(this.level().dimensionType(), destination.dimensionType());
+                 BlockPos blockposition = worldborder.clampToBounds(this.getX() * d0, this.getY(), this.getZ() * d0);
+                 // CraftBukkit start
+-                CraftPortalEvent event = this.callPortalEvent(this, destination, new PositionImpl(blockposition.getX(), blockposition.getY(), blockposition.getZ()), PlayerTeleportEvent.TeleportCause.NETHER_PORTAL, flag2 ? 16 : 128, 16);
++                // Paper start
++                int portalSearchRadius = destination.paperConfig().environment.portalSearchRadius;
++                if (level.paperConfig().environment.portalSearchVanillaDimensionScaling && flag2) { // == THE_NETHER
++                    portalSearchRadius = (int) (portalSearchRadius / destination.dimensionType().coordinateScale());
++                }
++                // Paper end
++                CraftPortalEvent event = this.callPortalEvent(this, destination, new PositionImpl(blockposition.getX(), blockposition.getY(), blockposition.getZ()), PlayerTeleportEvent.TeleportCause.NETHER_PORTAL, portalSearchRadius, destination.paperConfig().environment.portalCreateRadius); // Paper start - configurable portal radius
+                 if (event == null) {
+                     return null;
+                 }
+diff --git a/src/main/java/net/minecraft/world/level/portal/PortalForcer.java b/src/main/java/net/minecraft/world/level/portal/PortalForcer.java
+index 3668f9775f377434779a8e519b10a11cf7b14dd5..389b63605d416678d35666bbd46e0fa05a02f898 100644
+--- a/src/main/java/net/minecraft/world/level/portal/PortalForcer.java
++++ b/src/main/java/net/minecraft/world/level/portal/PortalForcer.java
+@@ -43,7 +43,7 @@ public class PortalForcer {
+ 
+     public Optional<BlockUtil.FoundRectangle> findPortalAround(BlockPos pos, boolean destIsNether, WorldBorder worldBorder) {
+         // CraftBukkit start
+-        return this.findPortalAround(pos, worldBorder, destIsNether ? 16 : 128); // Search Radius
++        return this.findPortalAround(pos, worldBorder, destIsNether ? level.paperConfig().environment.portalCreateRadius : level.paperConfig().environment.portalSearchRadius); // Search Radius // Paper - search Radius
+     }
+ 
+     public Optional<BlockUtil.FoundRectangle> findPortalAround(BlockPos blockposition, WorldBorder worldborder, int i) {

patches/unapplied/server/0058-Add-velocity-warnings.patch

@@ -0,0 +1,88 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Joseph Hirschfeld <joe@ibj.io>
+Date: Thu, 3 Mar 2016 02:48:12 -0600
+Subject: [PATCH] Add velocity warnings
+
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+index a4d530e81a319ea53122760e352083b9708f9f04..81758ba9193fad39a291c635c41d2cdbef34c1c2 100644
+--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
++++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+@@ -299,6 +299,7 @@ public final class CraftServer implements Server {
+     public boolean ignoreVanillaPermissions = false;
+     private final List<CraftPlayer> playerView;
+     public int reloadCount;
++    public static Exception excessiveVelEx; // Paper - Velocity warnings
+ 
+     static {
+         ConfigurationSerialization.registerClass(CraftOfflinePlayer.class);
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
+index 1ccaf59479dce7b913037f232bb37bdbc75b98a8..5a307e3bf2fc48a74e8c42372f3422fd32224133 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
+@@ -471,10 +471,40 @@ public abstract class CraftEntity implements org.bukkit.entity.Entity {
+     public void setVelocity(Vector velocity) {
+         Preconditions.checkArgument(velocity != null, "velocity");
+         velocity.checkFinite();
++        // Paper start - Warn server owners when plugins try to set super high velocities
++        if (!(this instanceof org.bukkit.entity.Projectile || this instanceof org.bukkit.entity.Minecart) && isUnsafeVelocity(velocity)) {
++            CraftServer.excessiveVelEx = new Exception("Excessive velocity set detected: tried to set velocity of entity " + entity.getScoreboardName() + " id #" + getEntityId() + " to (" + velocity.getX() + "," + velocity.getY() + "," + velocity.getZ() + ").");
++        }
++        // Paper end
+         this.entity.setDeltaMovement(CraftVector.toNMS(velocity));
+         entity.hurtMarked = true;
+     }
+ 
++    // Paper start
++    /**
++     * Checks if the given velocity is not necessarily safe in all situations.
++     * This function returning true does not mean the velocity is dangerous or to be avoided, only that it may be
++     * a detriment to performance on the server.
++     *
++     * It is not to be used as a hard rule of any sort.
++     * Paper only uses it to warn server owners in watchdog crashes.
++     *
++     * @param vel incoming velocity to check
++     * @return if the velocity has the potential to be a performance detriment
++     */
++    private static boolean isUnsafeVelocity(Vector vel) {
++        final double x = vel.getX();
++        final double y = vel.getY();
++        final double z = vel.getZ();
++
++        if (x > 4 || x < -4 || y > 4 || y < -4 || z > 4 || z < -4) {
++            return true;
++        }
++
++        return false;
++    }
++    // Paper end
++
+     @Override
+     public double getHeight() {
+         return this.getHandle().getBbHeight();
+diff --git a/src/main/java/org/spigotmc/WatchdogThread.java b/src/main/java/org/spigotmc/WatchdogThread.java
+index 11d7ede26b46d0bf9cced65e8c3bcc41c8b66dbf..3ad14bf0697e682a2e777baa8faeb323d127fb13 100644
+--- a/src/main/java/org/spigotmc/WatchdogThread.java
++++ b/src/main/java/org/spigotmc/WatchdogThread.java
+@@ -80,7 +80,19 @@ public final class WatchdogThread extends io.papermc.paper.util.TickThread // Pa
+                     log.log( Level.SEVERE, "During the run of the server, a physics stackoverflow was supressed" );
+                     log.log( Level.SEVERE, "near " + net.minecraft.world.level.Level.lastPhysicsProblem );
+                 }
+-                //
++                // Paper start - Warn in watchdog if an excessive velocity was ever set
++                if ( org.bukkit.craftbukkit.CraftServer.excessiveVelEx != null )
++                {
++                    log.log( Level.SEVERE, "------------------------------" );
++                    log.log( Level.SEVERE, "During the run of the server, a plugin set an excessive velocity on an entity" );
++                    log.log( Level.SEVERE, "This may be the cause of the issue, or it may be entirely unrelated" );
++                    log.log( Level.SEVERE, org.bukkit.craftbukkit.CraftServer.excessiveVelEx.getMessage());
++                    for ( StackTraceElement stack : org.bukkit.craftbukkit.CraftServer.excessiveVelEx.getStackTrace() )
++                    {
++                        log.log( Level.SEVERE, "\t\t" + stack );
++                    }
++                }
++                // Paper end
+                 log.log( Level.SEVERE, "------------------------------" );
+                 log.log( Level.SEVERE, "Server thread dump (Look for plugins here before reporting to Paper!):" ); // Paper
+                 io.papermc.paper.chunk.system.scheduling.ChunkTaskScheduler.dumpAllChunkLoadInfo(isLongTimeout); // Paper // Paper - rewrite chunk system

patches/unapplied/server/0059-Configurable-inter-world-teleportation-safety.patch

@@ -0,0 +1,30 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Sudzzy <originmc@outlook.com>
+Date: Thu, 3 Mar 2016 02:50:31 -0600
+Subject: [PATCH] Configurable inter-world teleportation safety
+
+People are able to abuse the way Bukkit handles teleportation across worlds since it provides a built in teleportation
+safety check.
+
+To abuse the safety check, players are required to get into a location deemed unsafe by Bukkit e.g. be within a chest
+or door block. While they are in this block, they accept a teleport request from a player within a different world. Once
+the player teleports, Minecraft will recursively search upwards for a safe location, this could eventually land within a
+player's skybase.
+
+Example setup to perform the glitch: http://puu.sh/ng3PC/cf072dcbdb.png
+The wanted destination was on top of the emerald block however the player ended on top of the diamond block.
+This only is the case if the player is teleporting between worlds.
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+index b6f8885196f806174f7d611c778fc1f74129d6d4..3ec282a272257996fad17c3ac23b334aca344bb0 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+@@ -1160,7 +1160,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
+             entity.connection.teleport(to);
+         } else {
+             // The respawn reason should never be used if the passed location is non null.
+-            server.getHandle().respawn(entity, toWorld, true, to, true, null);
++            server.getHandle().respawn(entity, toWorld, true, to, !toWorld.paperConfig().environment.disableTeleportationSuffocationCheck, null); // Paper
+         }
+         return true;
+     }

patches/unapplied/server/0060-Add-exception-reporting-event.patch

@@ -0,0 +1,215 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Joseph Hirschfeld <joe@ibj.io>
+Date: Thu, 3 Mar 2016 03:15:41 -0600
+Subject: [PATCH] Add exception reporting event
+
+
+diff --git a/src/main/java/com/destroystokyo/paper/ServerSchedulerReportingWrapper.java b/src/main/java/com/destroystokyo/paper/ServerSchedulerReportingWrapper.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..f699ce18ca044f813e194ef2786b7ea853ea86e7
+--- /dev/null
++++ b/src/main/java/com/destroystokyo/paper/ServerSchedulerReportingWrapper.java
+@@ -0,0 +1,38 @@
++package com.destroystokyo.paper;
++
++import com.google.common.base.Preconditions;
++import org.bukkit.craftbukkit.scheduler.CraftTask;
++import com.destroystokyo.paper.event.server.ServerExceptionEvent;
++import com.destroystokyo.paper.exception.ServerSchedulerException;
++
++/**
++ * Reporting wrapper to catch exceptions not natively
++ */
++public class ServerSchedulerReportingWrapper implements Runnable {
++
++    private final CraftTask internalTask;
++
++    public ServerSchedulerReportingWrapper(CraftTask internalTask) {
++        this.internalTask = Preconditions.checkNotNull(internalTask, "internalTask");
++    }
++
++    @Override
++    public void run() {
++        try {
++            internalTask.run();
++        } catch (RuntimeException e) {
++            internalTask.getOwner().getServer().getPluginManager().callEvent(
++                    new ServerExceptionEvent(new ServerSchedulerException(e, internalTask))
++            );
++            throw e;
++        } catch (Throwable t) {
++            internalTask.getOwner().getServer().getPluginManager().callEvent(
++                    new ServerExceptionEvent(new ServerSchedulerException(t, internalTask))
++            ); //Do not rethrow, since it is not permitted with Runnable#run
++        }
++    }
++
++    public CraftTask getInternalTask() {
++        return internalTask;
++    }
++}
+diff --git a/src/main/java/net/minecraft/server/players/OldUsersConverter.java b/src/main/java/net/minecraft/server/players/OldUsersConverter.java
+index 439ff01be1521c283d60cacb110fcb4993933057..da98f074ccd5a40c635824112c97fd174c393cb1 100644
+--- a/src/main/java/net/minecraft/server/players/OldUsersConverter.java
++++ b/src/main/java/net/minecraft/server/players/OldUsersConverter.java
+@@ -1,5 +1,6 @@
+ package net.minecraft.server.players;
+ 
++import com.destroystokyo.paper.exception.ServerInternalException;
+ import com.google.common.collect.Lists;
+ import com.google.common.collect.Maps;
+ import com.google.common.io.Files;
+@@ -363,6 +364,7 @@ public class OldUsersConverter {
+                             root = NbtIo.readCompressed(new java.io.FileInputStream(file5));
+                         } catch (Exception exception) {
+                             exception.printStackTrace();
++                            ServerInternalException.reportInternalException(exception); // Paper
+                         }
+ 
+                         if (root != null) {
+@@ -376,6 +378,7 @@ public class OldUsersConverter {
+                                 NbtIo.writeCompressed(root, new java.io.FileOutputStream(file2));
+                             } catch (Exception exception) {
+                                 exception.printStackTrace();
++                                ServerInternalException.reportInternalException(exception); // Paper
+                             }
+                        }
+                         // CraftBukkit end
+diff --git a/src/main/java/net/minecraft/world/entity/ai/village/VillageSiege.java b/src/main/java/net/minecraft/world/entity/ai/village/VillageSiege.java
+index c6fb4c33d7ea52b88d8fc0d90748cbab7387c565..fed09b886f4fa0006d160e5f2abb00dfee45434d 100644
+--- a/src/main/java/net/minecraft/world/entity/ai/village/VillageSiege.java
++++ b/src/main/java/net/minecraft/world/entity/ai/village/VillageSiege.java
+@@ -118,6 +118,7 @@ public class VillageSiege implements CustomSpawner {
+                 entityzombie.finalizeSpawn(world, world.getCurrentDifficultyAt(entityzombie.blockPosition()), MobSpawnType.EVENT, (SpawnGroupData) null, (CompoundTag) null);
+             } catch (Exception exception) {
+                 VillageSiege.LOGGER.warn("Failed to create zombie for village siege at {}", vec3d, exception);
++                com.destroystokyo.paper.exception.ServerInternalException.reportInternalException(exception); // Paper
+                 return;
+             }
+ 
+diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
+index 78041052d7ab2e6b60405ce7e02468458650db22..8149286827d9b609be47a4ded0413ca11f7858de 100644
+--- a/src/main/java/net/minecraft/world/level/Level.java
++++ b/src/main/java/net/minecraft/world/level/Level.java
+@@ -1,5 +1,10 @@
+ package net.minecraft.world.level;
+ 
++import co.aikar.timings.Timing;
++import co.aikar.timings.Timings;
++import com.destroystokyo.paper.event.server.ServerExceptionEvent;
++import com.destroystokyo.paper.exception.ServerInternalException;
++import com.google.common.base.MoreObjects;
+ import com.google.common.collect.Lists;
+ import com.mojang.serialization.Codec;
+ import java.io.IOException;
+@@ -730,6 +735,7 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
+             // Paper start - Prevent tile entity and entity crashes
+             final String msg = String.format("Entity threw exception at %s:%s,%s,%s", entity.level().getWorld().getName(), entity.getX(), entity.getY(), entity.getZ());
+             MinecraftServer.LOGGER.error(msg, throwable);
++            getCraftServer().getPluginManager().callEvent(new ServerExceptionEvent(new ServerInternalException(msg, throwable)));
+             entity.discard();
+             // Paper end
+         }
+diff --git a/src/main/java/net/minecraft/world/level/NaturalSpawner.java b/src/main/java/net/minecraft/world/level/NaturalSpawner.java
+index f1675e35be0ab7670c875c6b0d1e982a3ae09d1e..b2bb9bbd3af414c50ec3f8e3e171a679e95ef75e 100644
+--- a/src/main/java/net/minecraft/world/level/NaturalSpawner.java
++++ b/src/main/java/net/minecraft/world/level/NaturalSpawner.java
+@@ -291,6 +291,7 @@ public final class NaturalSpawner {
+             NaturalSpawner.LOGGER.warn("Can't spawn entity of type: {}", BuiltInRegistries.ENTITY_TYPE.getKey(type));
+         } catch (Exception exception) {
+             NaturalSpawner.LOGGER.warn("Failed to create mob", exception);
++            com.destroystokyo.paper.exception.ServerInternalException.reportInternalException(exception); // Paper
+         }
+ 
+         return null;
+@@ -404,6 +405,7 @@ public final class NaturalSpawner {
+                                     entity = biomesettingsmobs_c.type.create(world.getLevel());
+                                 } catch (Exception exception) {
+                                     NaturalSpawner.LOGGER.warn("Failed to create mob", exception);
++                                    com.destroystokyo.paper.exception.ServerInternalException.reportInternalException(exception); // Paper
+                                     continue;
+                                 }
+ 
+diff --git a/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java b/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java
+index 1f635d06dcff8672e9bdaf29fba6fdf39618f893..36701f196756dc7c6820cac516ff880d00a43b17 100644
+--- a/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java
++++ b/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java
+@@ -1,6 +1,7 @@
+ package net.minecraft.world.level.chunk;
+ 
+ import com.google.common.collect.ImmutableList;
++import com.destroystokyo.paper.exception.ServerInternalException;
+ import com.google.common.collect.Maps;
+ import com.google.common.collect.UnmodifiableIterator;
+ import com.mojang.logging.LogUtils;
+@@ -568,10 +569,16 @@ public class LevelChunk extends ChunkAccess {
+ 
+             // CraftBukkit start
+         } else {
+-            System.out.println("Attempted to place a tile entity (" + blockEntity + ") at " + blockEntity.getBlockPos().getX() + "," + blockEntity.getBlockPos().getY() + "," + blockEntity.getBlockPos().getZ()
+-                + " (" + this.getBlockState(blockposition) + ") where there was no entity tile!");
+-            System.out.println("Chunk coordinates: " + (this.chunkPos.x * 16) + "," + (this.chunkPos.z * 16));
+-            new Exception().printStackTrace();
++            // Paper start
++            ServerInternalException e = new ServerInternalException(
++                "Attempted to place a tile entity (" + blockEntity + ") at " + blockEntity.getBlockPos().getX() + ","
++                    + blockEntity.getBlockPos().getY() + "," + blockEntity.getBlockPos().getZ()
++                    + " (" + getBlockState(blockposition) + ") where there was no entity tile!\n" +
++                    "Chunk coordinates: " + (this.chunkPos.x * 16) + "," + (this.chunkPos.z * 16) +
++                    "\nWorld: " + level.getLevel().dimension().location());
++            e.printStackTrace();
++            ServerInternalException.reportInternalException(e);
++            // Paper end
+             // CraftBukkit end
+         }
+     }
+@@ -1149,6 +1156,7 @@ public class LevelChunk extends ChunkAccess {
+                         // Paper start - Prevent tile entity and entity crashes
+                         final String msg = String.format("BlockEntity threw exception at %s:%s,%s,%s", LevelChunk.this.getLevel().getWorld().getName(), this.getPos().getX(), this.getPos().getY(), this.getPos().getZ());
+                         net.minecraft.server.MinecraftServer.LOGGER.error(msg, throwable);
++                        net.minecraft.world.level.chunk.LevelChunk.this.level.getCraftServer().getPluginManager().callEvent(new com.destroystokyo.paper.event.server.ServerExceptionEvent(new ServerInternalException(msg, throwable)));
+                         LevelChunk.this.removeBlockEntity(this.getPos());
+                         // Paper end
+                         // Spigot start
+diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
+index e68205fe7169c7c5b7c6fdada2ee97d86107ca97..aa8972fd1a1fade05d60ab69efb8ff24f344508a 100644
+--- a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
++++ b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
+@@ -275,6 +275,7 @@ public class RegionFile implements AutoCloseable {
+                     return true;
+                 }
+             } catch (IOException ioexception) {
++                com.destroystokyo.paper.exception.ServerInternalException.reportInternalException(ioexception); // Paper
+                 return false;
+             }
+         }
+@@ -356,6 +357,7 @@ public class RegionFile implements AutoCloseable {
+             ((java.nio.Buffer) buf).position(5); // CraftBukkit - decompile error
+             filechannel.write(buf);
+         } catch (Throwable throwable) {
++            com.destroystokyo.paper.exception.ServerInternalException.reportInternalException(throwable); // Paper
+             if (filechannel != null) {
+                 try {
+                     filechannel.close();
+diff --git a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
+index fcbf32a233c240dd45f75ee736bd102ce9f79332..833240d2a4936343710a60876a66d01112e15a2c 100644
+--- a/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
++++ b/src/main/java/org/bukkit/craftbukkit/scheduler/CraftScheduler.java
+@@ -434,6 +434,8 @@ public class CraftScheduler implements BukkitScheduler {
+                             msg,
+                             throwable);
+                     }
++                    org.bukkit.Bukkit.getServer().getPluginManager().callEvent(
++                        new com.destroystokyo.paper.event.server.ServerExceptionEvent(new com.destroystokyo.paper.exception.ServerSchedulerException(msg, throwable, task)));
+                     // Paper end
+                 } finally {
+                     this.currentTask = null;
+@@ -441,7 +443,7 @@ public class CraftScheduler implements BukkitScheduler {
+                 this.parsePending();
+             } else {
+                 this.debugTail = this.debugTail.setNext(new CraftAsyncDebugger(currentTick + CraftScheduler.RECENT_TICKS, task.getOwner(), task.getTaskClass()));
+-                this.executor.execute(task);
++                this.executor.execute(new com.destroystokyo.paper.ServerSchedulerReportingWrapper(task)); // Paper
+                 // We don't need to parse pending
+                 // (async tasks must live with race-conditions if they attempt to cancel between these few lines of code)
+             }

patches/unapplied/server/0061-Don-t-nest-if-we-don-t-need-to-when-cerealising-text.patch

@@ -0,0 +1,35 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: kashike <kashike@vq.lc>
+Date: Tue, 8 Mar 2016 18:28:43 -0800
+Subject: [PATCH] Don't nest if we don't need to when cerealising text
+ components
+
+
+diff --git a/src/main/java/net/minecraft/network/protocol/game/ClientboundSystemChatPacket.java b/src/main/java/net/minecraft/network/protocol/game/ClientboundSystemChatPacket.java
+index 55e21c7b13826f60e3c656f76e1507e0242e0af3..1387e3597c43fd652f2fc82ca6fc2e83039604e2 100644
+--- a/src/main/java/net/minecraft/network/protocol/game/ClientboundSystemChatPacket.java
++++ b/src/main/java/net/minecraft/network/protocol/game/ClientboundSystemChatPacket.java
+@@ -14,7 +14,7 @@ public record ClientboundSystemChatPacket(@javax.annotation.Nullable net.kyori.a
+     }
+ 
+     public ClientboundSystemChatPacket(net.md_5.bungee.api.chat.BaseComponent[] content, boolean overlay) {
+-        this(null, net.md_5.bungee.chat.ComponentSerializer.toString(content), overlay); // Paper - Adventure
++        this(null, improveBungeeComponentSerialization(content), overlay); // Paper - Adventure
+     }
+     // Spigot end
+     // Paper start
+@@ -25,6 +25,14 @@ public record ClientboundSystemChatPacket(@javax.annotation.Nullable net.kyori.a
+     public ClientboundSystemChatPacket(net.kyori.adventure.text.Component content, boolean overlay) {
+         this(content, null, overlay);
+     }
++
++    private static String improveBungeeComponentSerialization(net.md_5.bungee.api.chat.BaseComponent[] content) {
++        if (content.length == 1) {
++            return net.md_5.bungee.chat.ComponentSerializer.toString(content[0]);
++        } else {
++            return net.md_5.bungee.chat.ComponentSerializer.toString(content);
++        }
++    }
+     // Paper end
+ 
+     public ClientboundSystemChatPacket(FriendlyByteBuf buf) {

patches/unapplied/server/0062-Disable-Scoreboards-for-non-players-by-default.patch

@@ -0,0 +1,36 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Tue, 8 Mar 2016 23:25:45 -0500
+Subject: [PATCH] Disable Scoreboards for non players by default
+
+Entities collision is checking for scoreboards setting.
+This is very heavy to do map lookups for every collision to check
+this setting.
+
+So avoid looking up scoreboards and short circuit to the "not on a team"
+logic which is most likely to be true.
+
+diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
+index 03d5ea7094223be15c96c223ca81bdb8685cc1e7..3bd230370a956a557e0646cc5f92a9a171664876 100644
+--- a/src/main/java/net/minecraft/world/entity/Entity.java
++++ b/src/main/java/net/minecraft/world/entity/Entity.java
+@@ -2795,6 +2795,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+ 
+     @Nullable
+     public Team getTeam() {
++        if (!this.level().paperConfig().scoreboards.allowNonPlayerEntitiesOnScoreboards && !(this instanceof Player)) { return null; } // Paper
+         return this.level().getScoreboard().getPlayersTeam(this.getScoreboardName());
+     }
+ 
+diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
+index 5dda05f7bf08dec8b48fe0b87aa227c3e0392c6f..ddf083a54015f943e3e00ae6d5f73f8e127f6dc2 100644
+--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
++++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
+@@ -833,6 +833,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
+         if (nbt.contains("Team", 8)) {
+             String s = nbt.getString("Team");
+             PlayerTeam scoreboardteam = this.level().getScoreboard().getPlayerTeam(s);
++            if (!this.level().paperConfig().scoreboards.allowNonPlayerEntitiesOnScoreboards && !(this instanceof net.minecraft.world.entity.player.Player)) { scoreboardteam = null; } // Paper
+             boolean flag = scoreboardteam != null && this.level().getScoreboard().addPlayerToTeam(this.getStringUUID(), scoreboardteam);
+ 
+             if (!flag) {

patches/unapplied/server/0063-Add-methods-for-working-with-arrows-stuck-in-living-.patch

@@ -0,0 +1,46 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: mrapple <tony@oc.tc>
+Date: Sun, 25 Nov 2012 13:43:39 -0600
+Subject: [PATCH] Add methods for working with arrows stuck in living entities
+
+Upstream added methods for this, original methods are now
+deprecated
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
+index b3fcbc3f5f0f8e9ca53fce85a4b86d4c292765df..bba6bce470a11c792bb2edc2171021437e2c9704 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
+@@ -267,9 +267,15 @@ public class CraftLivingEntity extends CraftEntity implements LivingEntity {
+     }
+ 
+     @Override
+-    public void setArrowsInBody(int count) {
++    public void setArrowsInBody(final int count, final boolean fireEvent) { // Paper
+         Preconditions.checkArgument(count >= 0, "New arrow amount must be >= 0");
++        if (!fireEvent) { // Paper
+         this.getHandle().getEntityData().set(net.minecraft.world.entity.LivingEntity.DATA_ARROW_COUNT_ID, count);
++        // Paper start
++        } else {
++            this.getHandle().setArrowCount(count);
++        }
++        // Paper end
+     }
+ 
+     @Override
+@@ -783,4 +789,16 @@ public class CraftLivingEntity extends CraftEntity implements LivingEntity {
+         this.getHandle().persistentInvisibility = invisible;
+         this.getHandle().setSharedFlag(5, invisible);
+     }
++
++    // Paper start
++    @Override
++    public int getArrowsStuck() {
++        return this.getHandle().getArrowCount();
++    }
++
++    @Override
++    public void setArrowsStuck(final int arrows) {
++        this.getHandle().setArrowCount(arrows);
++    }
++    // Paper end
+ }

patches/unapplied/server/0064-Chunk-Save-Reattempt.patch

@@ -0,0 +1,51 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Mon, 4 Mar 2013 23:46:10 -0500
+Subject: [PATCH] Chunk Save Reattempt
+
+We commonly have "Stream Closed" errors on chunk saving, so this code should re-try to save the chunk in the event of failure and hopefully prevent rollbacks.
+
+diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
+index aa8972fd1a1fade05d60ab69efb8ff24f344508a..ddcc212ba83d9365adb842b3d3ced64e3d7dd155 100644
+--- a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
++++ b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFile.java
+@@ -275,7 +275,7 @@ public class RegionFile implements AutoCloseable {
+                     return true;
+                 }
+             } catch (IOException ioexception) {
+-                com.destroystokyo.paper.exception.ServerInternalException.reportInternalException(ioexception); // Paper
++                com.destroystokyo.paper.util.SneakyThrow.sneaky(ioexception); // Paper - we want the upper try/catch to retry this
+                 return false;
+             }
+         }
+diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
+index fe8bb0037bb7f317fc32ac34461f4eb3a1f397f2..a16047cab2709d197489215de66bf24901523a1c 100644
+--- a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
++++ b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
+@@ -208,6 +208,7 @@ public class RegionFileStorage implements AutoCloseable {
+         }
+         // Paper end - rewrite chunk system
+         try { // Paper
++        int attempts = 0; Exception laste = null; while (attempts++ < 5) { try { // Paper
+ 
+         if (nbt == null) {
+             regionfile.clear(pos);
+@@ -232,7 +233,18 @@ public class RegionFileStorage implements AutoCloseable {
+                 dataoutputstream.close();
+             }
+         }
++        // Paper start
++        return;
++        } catch (Exception ex)  {
++            laste = ex;
++        }
++        }
+ 
++        if (laste != null) {
++            com.destroystokyo.paper.exception.ServerInternalException.reportInternalException(laste);
++            net.minecraft.server.MinecraftServer.LOGGER.error("Failed to save chunk " + pos, laste);
++        }
++        // Paper end
+         } finally { // Paper start
+             regionfile.fileLock.unlock();
+         } // Paper end

patches/unapplied/server/0065-Complete-resource-pack-API.patch

@@ -0,0 +1,85 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jedediah Smith <jedediah@silencegreys.com>
+Date: Sat, 4 Apr 2015 23:17:52 -0400
+Subject: [PATCH] Complete resource pack API
+
+
+diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+index c69a2da951af082b8dc90baf35b7e020ffda0b5e..cad7df80d4914b533ce9db1a10b5923b5ffe578b 100644
+--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
++++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+@@ -1760,8 +1760,11 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
+             ServerGamePacketListenerImpl.LOGGER.info("Disconnecting {} due to resource pack rejection", this.player.getName());
+             this.disconnect(Component.translatable("multiplayer.requiredTexturePrompt.disconnect"));
+         }
+-        this.cserver.getPluginManager().callEvent(new PlayerResourcePackStatusEvent(this.getCraftPlayer(), PlayerResourcePackStatusEvent.Status.values()[packet.action.ordinal()])); // CraftBukkit
+-
++        // Paper start
++        PlayerResourcePackStatusEvent.Status packStatus = PlayerResourcePackStatusEvent.Status.values()[packet.action.ordinal()];
++        player.getBukkitEntity().setResourcePackStatus(packStatus);
++        this.cserver.getPluginManager().callEvent(new PlayerResourcePackStatusEvent(this.getCraftPlayer(), packStatus)); // CraftBukkit
++        // Paper end
+     }
+ 
+     @Override
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+index 4045038fbe2dac5c5e18e3cdd68ce16ac3691b97..df91d5f9161e9bf65556191a3079ae0f008ab698 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+@@ -189,6 +189,10 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
+     private double healthScale = 20;
+     private CraftWorldBorder clientWorldBorder = null;
+     private BorderChangeListener clientWorldBorderListener = this.createWorldBorderListener();
++    // Paper start
++    private org.bukkit.event.player.PlayerResourcePackStatusEvent.Status resourcePackStatus;
++    private String resourcePackHash;
++    // Paper end
+ 
+     public CraftPlayer(CraftServer server, ServerPlayer entity) {
+         super(server, entity);
+@@ -2352,6 +2356,45 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
+     public boolean getAffectsSpawning() {
+         return this.getHandle().affectsSpawning;
+     }
++
++    @Override
++    public void setResourcePack(@NotNull String url, @NotNull String hash) {
++        this.setResourcePack(url, hash, false, null);
++    }
++
++    @Override
++    public void setResourcePack(@NotNull String url, @NotNull String hash, boolean required) {
++        this.setResourcePack(url, hash, required, null);
++    }
++
++    @Override
++    public void setResourcePack(@NotNull String url, @NotNull String hash, boolean required, net.kyori.adventure.text.Component resourcePackPrompt) {
++        Preconditions.checkArgument(url != null, "Resource pack URL cannot be null");
++        Preconditions.checkArgument(hash != null, "Hash cannot be null");
++        net.minecraft.network.chat.Component promptComponent = resourcePackPrompt != null ?
++                            io.papermc.paper.adventure.PaperAdventure.asVanilla(resourcePackPrompt) :
++                           null;
++        this.getHandle().sendTexturePack(url, hash, required, promptComponent);
++    }
++
++    @Override
++    public org.bukkit.event.player.PlayerResourcePackStatusEvent.Status getResourcePackStatus() {
++        return this.resourcePackStatus;
++    }
++
++    @Override
++    public String getResourcePackHash() {
++        return this.resourcePackHash;
++    }
++
++    @Override
++    public boolean hasResourcePack() {
++        return this.resourcePackStatus == org.bukkit.event.player.PlayerResourcePackStatusEvent.Status.SUCCESSFULLY_LOADED;
++    }
++
++    public void setResourcePackStatus(org.bukkit.event.player.PlayerResourcePackStatusEvent.Status status) {
++        this.resourcePackStatus = status;
++    }
+     // Paper end
+ 
+     @Override

patches/unapplied/server/0066-Default-loading-permissions.yml-before-plugins.patch

@@ -0,0 +1,38 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Fri, 18 Mar 2016 13:17:38 -0400
+Subject: [PATCH] Default loading permissions.yml before plugins
+
+Under previous behavior, plugins were not able to check if a player had a permission
+if it was defined in permissions.yml. there is no clean way for a plugin to fix that either.
+
+This will change the order so that by default, permissions.yml loads BEFORE plugins instead of after.
+
+This gives plugins expected permission checks.
+
+It also helps improve the expected logic, as servers should set the initial defaults, and then let plugins
+modify that. Under the previous logic, plugins were unable (cleanly) override permissions.yml.
+
+A config option has been added for those who depend on the previous behavior, but I don't expect that.
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+index c7849bda8cfaa9c6b581f180342687f30da0a639..6a435ae10003b854d387cfc393b9b526cfcbf0a7 100644
+--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
++++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+@@ -462,6 +462,7 @@ public final class CraftServer implements Server {
+         if (type == PluginLoadOrder.STARTUP) {
+             this.helpMap.clear();
+             this.helpMap.initializeGeneralTopics();
++            if (io.papermc.paper.configuration.GlobalConfiguration.get().misc.loadPermissionsYmlBeforePlugins) loadCustomPermissions(); // Paper
+         }
+ 
+         Plugin[] plugins = this.pluginManager.getPlugins();
+@@ -481,7 +482,7 @@ public final class CraftServer implements Server {
+             this.commandMap.registerServerAliases();
+             DefaultPermissions.registerCorePermissions();
+             CraftDefaultPermissions.registerCorePermissions();
+-            this.loadCustomPermissions();
++            if (!io.papermc.paper.configuration.GlobalConfiguration.get().misc.loadPermissionsYmlBeforePlugins) this.loadCustomPermissions(); // Paper
+             this.helpMap.initializeCommands();
+             this.syncCommands();
+         }

patches/unapplied/server/0067-Allow-Reloading-of-Custom-Permissions.patch

@@ -0,0 +1,35 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: William <admin@domnian.com>
+Date: Fri, 18 Mar 2016 03:30:17 -0400
+Subject: [PATCH] Allow Reloading of Custom Permissions
+
+https://github.com/PaperMC/Paper/issues/49
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+index 6a435ae10003b854d387cfc393b9b526cfcbf0a7..de50d84008851b44fe8999affbb6c2ac8e376cf3 100644
+--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
++++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+@@ -2619,5 +2619,23 @@ public final class CraftServer implements Server {
+         }
+         return this.adventure$audiences;
+     }
++
++    @Override
++    public void reloadPermissions() {
++        pluginManager.clearPermissions();
++        if (io.papermc.paper.configuration.GlobalConfiguration.get().misc.loadPermissionsYmlBeforePlugins) loadCustomPermissions();
++        for (Plugin plugin : pluginManager.getPlugins()) {
++            for (Permission perm : plugin.getDescription().getPermissions()) {
++                try {
++                    pluginManager.addPermission(perm);
++                } catch (IllegalArgumentException ex) {
++                    getLogger().log(Level.WARNING, "Plugin " + plugin.getDescription().getFullName() + " tried to register permission '" + perm.getName() + "' but it's already registered", ex);
++                }
++            }
++        }
++        if (!io.papermc.paper.configuration.GlobalConfiguration.get().misc.loadPermissionsYmlBeforePlugins) loadCustomPermissions();
++        DefaultPermissions.registerCorePermissions();
++        CraftDefaultPermissions.registerCorePermissions();
++    }
+     // Paper end
+ }

patches/unapplied/server/0068-Remove-Metadata-on-reload.patch

@@ -0,0 +1,29 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Fri, 18 Mar 2016 13:50:14 -0400
+Subject: [PATCH] Remove Metadata on reload
+
+Metadata is not meant to persist reload as things break badly with non primitive types
+This will remove metadata on reload so it does not crash everything if a plugin uses it.
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+index de50d84008851b44fe8999affbb6c2ac8e376cf3..1f294e7841de880ebe99e02265ba28ce8c932d07 100644
+--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
++++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+@@ -953,8 +953,16 @@ public final class CraftServer implements Server {
+             world.spigotConfig.init(); // Spigot
+         }
+ 
++        Plugin[] pluginClone = pluginManager.getPlugins().clone(); // Paper
+         this.pluginManager.clearPlugins();
+         this.commandMap.clearCommands();
++        // Paper start
++        for (Plugin plugin : pluginClone) {
++            entityMetadata.removeAll(plugin);
++            worldMetadata.removeAll(plugin);
++            playerMetadata.removeAll(plugin);
++        }
++        // Paper end
+         this.reloadData();
+         org.spigotmc.SpigotConfig.registerCommands(); // Spigot
+         io.papermc.paper.command.PaperCommands.registerCommands(this.console); // Paper

patches/unapplied/server/0069-Handle-Item-Meta-Inconsistencies.patch

@@ -0,0 +1,324 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Thu, 28 May 2015 23:00:19 -0400
+Subject: [PATCH] Handle Item Meta Inconsistencies
+
+First, Enchantment order would blow away seeing 2 items as the same,
+however the Client forces enchantment list in a certain order, as well
+as does the /enchant command. Anvils can insert it into forced order,
+causing 2 same items to be considered different.
+
+This change makes unhandled NBT Tags and Enchantments use a sorted tree map,
+so they will always be in a consistent order.
+
+Additionally, the old enchantment API was never updated when ItemMeta
+was added, resulting in 2 different ways to modify an items enchantments.
+
+For consistency, the old API methods now forward to use the
+ItemMeta API equivalents, and should deprecate the old API's.
+
+diff --git a/src/main/java/net/minecraft/world/item/ItemStack.java b/src/main/java/net/minecraft/world/item/ItemStack.java
+index 3f18fb61a47dda559a6997af9c6c043423dd206a..c33660718c0ea281d7bcdb15df0568d4d46547e2 100644
+--- a/src/main/java/net/minecraft/world/item/ItemStack.java
++++ b/src/main/java/net/minecraft/world/item/ItemStack.java
+@@ -156,6 +156,23 @@ public final class ItemStack {
+         return this.getItem().getTooltipImage(this);
+     }
+ 
++    // Paper start
++    private static final java.util.Comparator<? super CompoundTag> enchantSorter = java.util.Comparator.comparing(o -> o.getString("id"));
++    private void processEnchantOrder(@Nullable CompoundTag tag) {
++        if (tag == null || !tag.contains("Enchantments", 9)) {
++            return;
++        }
++        ListTag list = tag.getList("Enchantments", 10);
++        if (list.size() < 2) {
++            return;
++        }
++        try {
++            //noinspection unchecked
++            list.sort((java.util.Comparator<? super net.minecraft.nbt.Tag>) enchantSorter); // Paper
++        } catch (Exception ignored) {}
++    }
++    // Paper end
++
+     public ItemStack(ItemLike item) {
+         this(item, 1);
+     }
+@@ -204,6 +221,7 @@ public final class ItemStack {
+             // CraftBukkit start - make defensive copy as this data may be coming from the save thread
+             this.tag = nbttagcompound.getCompound("tag").copy();
+             // CraftBukkit end
++            this.processEnchantOrder(this.tag); // Paper
+             this.getItem().verifyTagAfterLoad(this.tag);
+         }
+ 
+@@ -814,6 +832,7 @@ public final class ItemStack {
+ 
+     public void setTag(@Nullable CompoundTag nbt) {
+         this.tag = nbt;
++        this.processEnchantOrder(this.tag); // Paper
+         if (this.getItem().canBeDepleted()) {
+             this.setDamageValue(this.getDamageValue());
+         }
+@@ -1111,6 +1130,7 @@ public final class ItemStack {
+         ListTag nbttaglist = this.tag.getList("Enchantments", 10);
+ 
+         nbttaglist.add(EnchantmentHelper.storeEnchantment(EnchantmentHelper.getEnchantmentId(enchantment), (byte) level));
++        processEnchantOrder(this.tag); // Paper
+     }
+ 
+     public boolean isEnchanted() {
+diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java
+index 40aad6a209fbded448e3db21207a85d9f2875e71..4dcbd1ed61070c12adf5871a595875ca60110c5d 100644
+--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java
++++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftItemStack.java
+@@ -188,28 +188,11 @@ public final class CraftItemStack extends ItemStack {
+     public void addUnsafeEnchantment(Enchantment ench, int level) {
+         Preconditions.checkArgument(ench != null, "Enchantment cannot be null");
+ 
+-        if (!CraftItemStack.makeTag(this.handle)) {
+-            return;
+-        }
+-        ListTag list = CraftItemStack.getEnchantmentList(this.handle);
+-        if (list == null) {
+-            list = new ListTag();
+-            this.handle.getTag().put(ENCHANTMENTS.NBT, list);
+-        }
+-        int size = list.size();
+-
+-        for (int i = 0; i < size; i++) {
+-            CompoundTag tag = (CompoundTag) list.get(i);
+-            String id = tag.getString(ENCHANTMENTS_ID.NBT);
+-            if (ench.getKey().equals(NamespacedKey.fromString(id))) {
+-                tag.putShort(ENCHANTMENTS_LVL.NBT, (short) level);
+-                return;
+-            }
+-        }
+-        CompoundTag tag = new CompoundTag();
+-        tag.putString(ENCHANTMENTS_ID.NBT, ench.getKey().toString());
+-        tag.putShort(ENCHANTMENTS_LVL.NBT, (short) level);
+-        list.add(tag);
++        // Paper start - Replace whole method
++        final ItemMeta itemMeta = this.getItemMeta();
++        itemMeta.addEnchant(ench, level, true);
++        this.setItemMeta(itemMeta);
++        // Paper end
+     }
+ 
+     static boolean makeTag(net.minecraft.world.item.ItemStack item) {
+@@ -235,57 +218,40 @@ public final class CraftItemStack extends ItemStack {
+         if (this.handle == null) {
+             return 0;
+         }
+-        return EnchantmentHelper.getItemEnchantmentLevel(CraftEnchantment.getRaw(ench), handle);
++        // Paper start - replace to allow custom enchantments
++        final ListTag enchantments = this.handle.getEnchantmentTags();
++        for (int i = 0; i < enchantments.size(); i++) {
++            final CompoundTag tag = enchantments.getCompound(i);
++            final String id = tag.getString(CraftMetaItem.ENCHANTMENTS_ID.NBT);
++            final Enchantment enchant = Enchantment.getByKey(CraftNamespacedKey.fromStringOrNull(id));
++            if (ench.equals(enchant)) {
++                return EnchantmentHelper.getEnchantmentLevel(tag);
++            }
++        }
++        return 0;
++        // Paper end - replace to allow custom enchantments
+     }
+ 
+     @Override
+     public int removeEnchantment(Enchantment ench) {
+         Preconditions.checkArgument(ench != null, "Enchantment cannot be null");
+ 
+-        ListTag list = CraftItemStack.getEnchantmentList(this.handle), listCopy;
+-        if (list == null) {
+-            return 0;
+-        }
+-        int index = Integer.MIN_VALUE;
+-        int level = Integer.MIN_VALUE;
+-        int size = list.size();
+-
+-        for (int i = 0; i < size; i++) {
+-            CompoundTag enchantment = (CompoundTag) list.get(i);
+-            String id = enchantment.getString(ENCHANTMENTS_ID.NBT);
+-            if (ench.getKey().equals(NamespacedKey.fromString(id))) {
+-                index = i;
+-                level = 0xffff & enchantment.getShort(ENCHANTMENTS_LVL.NBT);
+-                break;
+-            }
+-        }
+-
+-        if (index == Integer.MIN_VALUE) {
+-            return 0;
+-        }
+-        if (size == 1) {
+-            this.handle.getTag().remove(ENCHANTMENTS.NBT);
+-            if (this.handle.getTag().isEmpty()) {
+-                this.handle.setTag(null);
+-            }
+-            return level;
+-        }
+-
+-        // This is workaround for not having an index removal
+-        listCopy = new ListTag();
+-        for (int i = 0; i < size; i++) {
+-            if (i != index) {
+-                listCopy.add(list.get(i));
+-            }
++        // Paper start - replace entire method
++        int level = getEnchantmentLevel(ench);
++        if (level > 0) {
++            final ItemMeta itemMeta = this.getItemMeta();
++            if (itemMeta == null) return 0;
++            itemMeta.removeEnchant(ench);
++            this.setItemMeta(itemMeta);
+         }
+-        this.handle.getTag().put(ENCHANTMENTS.NBT, listCopy);
++        // Paper end
+ 
+         return level;
+     }
+ 
+     @Override
+     public Map<Enchantment, Integer> getEnchantments() {
+-        return CraftItemStack.getEnchantments(this.handle);
++        return this.hasItemMeta() ? this.getItemMeta().getEnchants() : ImmutableMap.<Enchantment, Integer>of(); // Paper - use Item Meta
+     }
+ 
+     static Map<Enchantment, Integer> getEnchantments(net.minecraft.world.item.ItemStack item) {
+diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
+index 44244166ec4e8ac070404101219efbc0e5f1d168..092695d4b45205fe2290f8f4375e881aaf89817d 100644
+--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
++++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
+@@ -6,6 +6,7 @@ import com.google.common.collect.ImmutableList;
+ import com.google.common.collect.ImmutableMap;
+ import com.google.common.collect.ImmutableMultimap;
+ import com.google.common.collect.LinkedHashMultimap;
++import com.google.common.collect.ImmutableSortedMap; // Paper
+ import com.google.common.collect.Lists;
+ import com.google.common.collect.Multimap;
+ import com.google.common.collect.SetMultimap;
+@@ -23,6 +24,7 @@ import java.util.ArrayList;
+ import java.util.Arrays;
+ import java.util.Base64;
+ import java.util.Collection;
++import java.util.Comparator; // Paper
+ import java.util.EnumSet;
+ import java.util.HashMap;
+ import java.util.Iterator;
+@@ -33,6 +35,7 @@ import java.util.Map;
+ import java.util.NoSuchElementException;
+ import java.util.Objects;
+ import java.util.Set;
++import java.util.TreeMap; // Paper
+ import java.util.logging.Level;
+ import java.util.logging.Logger;
+ import javax.annotation.Nonnull;
+@@ -275,7 +278,7 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
+     private List<String> lore; // null and empty are two different states internally
+     private Integer customModelData;
+     private CompoundTag blockData;
+-    private Map<Enchantment, Integer> enchantments;
++    private EnchantmentMap enchantments; // Paper
+     private Multimap<Attribute, AttributeModifier> attributeModifiers;
+     private int repairCost;
+     private int hideFlag;
+@@ -286,7 +289,7 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
+     private static final CraftPersistentDataTypeRegistry DATA_TYPE_REGISTRY = new CraftPersistentDataTypeRegistry();
+ 
+     private CompoundTag internalTag;
+-    final Map<String, Tag> unhandledTags = new HashMap<String, Tag>(); // Visible for testing only
++    final Map<String, Tag> unhandledTags = new TreeMap<String, Tag>(); // Visible for testing only // Paper
+     private CraftPersistentDataContainer persistentDataContainer = new CraftPersistentDataContainer(CraftMetaItem.DATA_TYPE_REGISTRY);
+ 
+     private int version = CraftMagicNumbers.INSTANCE.getDataVersion(); // Internal use only
+@@ -307,7 +310,7 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
+         this.blockData = meta.blockData;
+ 
+         if (meta.enchantments != null) { // Spigot
+-            this.enchantments = new LinkedHashMap<Enchantment, Integer>(meta.enchantments);
++            this.enchantments = new EnchantmentMap(meta.enchantments); // Paper
+         }
+ 
+         if (meta.hasAttributeModifiers()) {
+@@ -390,13 +393,13 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
+         }
+     }
+ 
+-    static Map<Enchantment, Integer> buildEnchantments(CompoundTag tag, ItemMetaKey key) {
++    static EnchantmentMap buildEnchantments(CompoundTag tag, ItemMetaKey key) { // Paper
+         if (!tag.contains(key.NBT)) {
+             return null;
+         }
+ 
+         ListTag ench = tag.getList(key.NBT, CraftMagicNumbers.NBT.TAG_COMPOUND);
+-        Map<Enchantment, Integer> enchantments = new LinkedHashMap<Enchantment, Integer>(ench.size());
++        EnchantmentMap enchantments = new EnchantmentMap(); // Paper
+ 
+         for (int i = 0; i < ench.size(); i++) {
+             String id = ((CompoundTag) ench.get(i)).getString(ENCHANTMENTS_ID.NBT);
+@@ -549,13 +552,13 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
+         }
+     }
+ 
+-    static Map<Enchantment, Integer> buildEnchantments(Map<String, Object> map, ItemMetaKey key) {
++    static EnchantmentMap buildEnchantments(Map<String, Object> map, ItemMetaKey key) { // Paper
+         Map<?, ?> ench = SerializableMeta.getObject(Map.class, map, key.BUKKIT, true);
+         if (ench == null) {
+             return null;
+         }
+ 
+-        Map<Enchantment, Integer> enchantments = new LinkedHashMap<Enchantment, Integer>(ench.size());
++        EnchantmentMap enchantments = new EnchantmentMap(); // Paper
+         for (Map.Entry<?, ?> entry : ench.entrySet()) {
+             // Doctor older enchants
+             String enchantKey = entry.getKey().toString();
+@@ -831,14 +834,14 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
+ 
+     @Override
+     public Map<Enchantment, Integer> getEnchants() {
+-        return this.hasEnchants() ? ImmutableMap.copyOf(enchantments) : ImmutableMap.<Enchantment, Integer>of();
++        return this.hasEnchants() ? ImmutableSortedMap.copyOfSorted(this.enchantments) : ImmutableMap.<Enchantment, Integer>of(); // Paper
+     }
+ 
+     @Override
+     public boolean addEnchant(Enchantment ench, int level, boolean ignoreRestrictions) {
+         Preconditions.checkArgument(ench != null, "Enchantment cannot be null");
+         if (this.enchantments == null) {
+-            this.enchantments = new LinkedHashMap<Enchantment, Integer>(4);
++            this.enchantments = new EnchantmentMap(); // Paper
+         }
+ 
+         if (ignoreRestrictions || level >= ench.getStartLevel() && level <= ench.getMaxLevel()) {
+@@ -1227,7 +1230,7 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
+             clone.customModelData = this.customModelData;
+             clone.blockData = this.blockData;
+             if (this.enchantments != null) {
+-                clone.enchantments = new LinkedHashMap<Enchantment, Integer>(this.enchantments);
++                clone.enchantments = new EnchantmentMap(this.enchantments); // Paper
+             }
+             if (this.hasAttributeModifiers()) {
+                 clone.attributeModifiers = LinkedHashMultimap.create(this.attributeModifiers);
+@@ -1469,4 +1472,22 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
+             return CraftMetaItem.HANDLED_TAGS;
+         }
+     }
++
++    // Paper start
++    private static class EnchantmentMap extends TreeMap<Enchantment, Integer> {
++        private EnchantmentMap(Map<Enchantment, Integer> enchantments) {
++            this();
++            putAll(enchantments);
++        }
++
++        private EnchantmentMap() {
++            super(Comparator.comparing(o -> o.getKey().toString()));
++        }
++
++        public EnchantmentMap clone() {
++            return (EnchantmentMap) super.clone();
++        }
++    }
++    // Paper end
++
+ }

patches/unapplied/server/0070-Configurable-Non-Player-Arrow-Despawn-Rate.patch

@@ -0,0 +1,20 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Fri, 18 Mar 2016 15:12:22 -0400
+Subject: [PATCH] Configurable Non Player Arrow Despawn Rate
+
+Can set a much shorter despawn rate for arrows that players can not pick up.
+
+diff --git a/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java b/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java
+index 37356efff435444b29d6d6682f365a329ebdd92e..7acd5d9fb7f7d3e067de779a9e3f0cedb587c68a 100644
+--- a/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java
++++ b/src/main/java/net/minecraft/world/entity/projectile/AbstractArrow.java
+@@ -312,7 +312,7 @@ public abstract class AbstractArrow extends Projectile {
+ 
+     protected void tickDespawn() {
+         ++this.life;
+-        if (this.life >= ((this instanceof ThrownTrident) ? this.level().spigotConfig.tridentDespawnRate : this.level().spigotConfig.arrowDespawnRate)) { // Spigot
++        if (this.life >= (pickup == Pickup.CREATIVE_ONLY ? this.level().paperConfig().entities.spawning.creativeArrowDespawnRate.value() : (pickup == Pickup.DISALLOWED ? this.level().paperConfig().entities.spawning.nonPlayerArrowDespawnRate.value() : ((this instanceof ThrownTrident) ? this.level().spigotConfig.tridentDespawnRate : this.level().spigotConfig.arrowDespawnRate)))) { // Spigot // Paper - TODO: Extract this to init?
+             this.discard();
+         }
+ 

patches/unapplied/server/0071-Add-World-Util-Methods.patch

@@ -0,0 +1,47 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Fri, 18 Mar 2016 20:16:03 -0400
+Subject: [PATCH] Add World Util Methods
+
+Methods that can be used for other patches to help improve logic.
+
+diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
+index e253531f5da93d2a5b328e1af6eef2a6d9a72bc1..d48ad601dc9f8b3ed3bc0e2dd068981eb7613c30 100644
+--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
++++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
+@@ -221,7 +221,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
+     public final LevelStorageSource.LevelStorageAccess convertable;
+     public final UUID uuid;
+ 
+-    public LevelChunk getChunkIfLoaded(int x, int z) {
++    @Override public LevelChunk getChunkIfLoaded(int x, int z) { // Paper - this was added in world too but keeping here for NMS ABI
+         return this.chunkSource.getChunk(x, z, false);
+     }
+ 
+diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
+index 8149286827d9b609be47a4ded0413ca11f7858de..809f7db469583ea90fbb165cf180dc87055c6105 100644
+--- a/src/main/java/net/minecraft/world/level/Level.java
++++ b/src/main/java/net/minecraft/world/level/Level.java
+@@ -342,6 +342,22 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
+         return chunk == null ? null : chunk.getFluidState(blockposition);
+     }
+ 
++    public final boolean isLoadedAndInBounds(BlockPos blockposition) { // Paper - final for inline
++        return getWorldBorder().isWithinBounds(blockposition) && getChunkIfLoadedImmediately(blockposition.getX() >> 4, blockposition.getZ() >> 4) != null;
++    }
++
++    public @Nullable LevelChunk getChunkIfLoaded(int x, int z) { // Overridden in WorldServer for ABI compat which has final
++        return ((ServerLevel) this).getChunkSource().getChunkAtIfLoadedImmediately(x, z);
++    }
++    public final @Nullable LevelChunk getChunkIfLoaded(BlockPos blockposition) {
++        return ((ServerLevel) this).getChunkSource().getChunkAtIfLoadedImmediately(blockposition.getX() >> 4, blockposition.getZ() >> 4);
++    }
++
++    //  reduces need to do isLoaded before getType
++    public final @Nullable BlockState getBlockStateIfLoadedAndInBounds(BlockPos blockposition) {
++        return getWorldBorder().isWithinBounds(blockposition) ? getBlockStateIfLoaded(blockposition) : null;
++    }
++
+     @Override
+     public final ChunkAccess getChunk(int chunkX, int chunkZ, ChunkStatus leastStatus, boolean create) { // Paper - final for inline
+         // Paper end

patches/unapplied/server/0072-Custom-replacement-for-eaten-items.patch

@@ -0,0 +1,48 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jedediah Smith <jedediah@silencegreys.com>
+Date: Sun, 21 Jun 2015 15:07:20 -0400
+Subject: [PATCH] Custom replacement for eaten items
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
+index ddf083a54015f943e3e00ae6d5f73f8e127f6dc2..d8ecc90465dfc54319d7f2478979e9aaee42f5a2 100644
+--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
++++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
+@@ -3639,10 +3639,11 @@ public abstract class LivingEntity extends Entity implements Attackable {
+                     this.triggerItemUseEffects(this.useItem, 16);
+                     // CraftBukkit start - fire PlayerItemConsumeEvent
+                     ItemStack itemstack;
++                    PlayerItemConsumeEvent event = null; // Paper
+                     if (this instanceof ServerPlayer) {
+                         org.bukkit.inventory.ItemStack craftItem = CraftItemStack.asBukkitCopy(this.useItem);
+                         org.bukkit.inventory.EquipmentSlot hand = org.bukkit.craftbukkit.CraftEquipmentSlot.getHand(enumhand);
+-                        PlayerItemConsumeEvent event = new PlayerItemConsumeEvent((Player) this.getBukkitEntity(), craftItem, hand);
++                        event = new PlayerItemConsumeEvent((Player) this.getBukkitEntity(), craftItem, hand); // Paper
+                         this.level().getCraftServer().getPluginManager().callEvent(event);
+ 
+                         if (event.isCancelled()) {
+@@ -3656,6 +3657,12 @@ public abstract class LivingEntity extends Entity implements Attackable {
+                     } else {
+                         itemstack = this.useItem.finishUsingItem(this.level(), this);
+                     }
++                    // Paper start - save the default replacement item and change it if necessary
++                    final ItemStack defaultReplacement = itemstack;
++                    if (event != null && event.getReplacement() != null) {
++                        itemstack = CraftItemStack.asNMSCopy(event.getReplacement());
++                    }
++                    // Paper end
+                     // CraftBukkit end
+ 
+                     if (itemstack != this.useItem) {
+@@ -3663,6 +3670,11 @@ public abstract class LivingEntity extends Entity implements Attackable {
+                     }
+ 
+                     this.stopUsingItem();
++                    // Paper start - if the replacement is anything but the default, update the client inventory
++                    if (this instanceof ServerPlayer && !com.google.common.base.Objects.equal(defaultReplacement, itemstack)) {
++                        ((ServerPlayer) this).getBukkitEntity().updateInventory();
++                    }
++                    // Paper end
+                 }
+ 
+             }

patches/unapplied/server/0073-Strip-raytracing-for-EntityLiving-hasLineOfSight.patch

@@ -0,0 +1,159 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Paul Sauve <paul@technove.co>
+Date: Sat, 31 Oct 2020 18:43:02 -0500
+Subject: [PATCH] Strip raytracing for EntityLiving#hasLineOfSight
+
+The BlockGetter#clip method is very wasteful in both allocations,
+and in logic. While EntityLiving#hasLineOfSight provides static
+parameters for collisions with blocks and fluids, the method still does
+a lot of dynamic checks for both of these, which result in extra work.
+As well, since the fluid collision option is set to NONE, the entire
+fluid collision system is completely unneeded, yet used anyways.
+
+Copyright (C) 2020 Technove LLC
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
+index d8ecc90465dfc54319d7f2478979e9aaee42f5a2..53e666df97e74bbb8e96207ebc50e3e9acc455de 100644
+--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
++++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
+@@ -3407,7 +3407,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
+             Vec3 vec3d = new Vec3(this.getX(), this.getEyeY(), this.getZ());
+             Vec3 vec3d1 = new Vec3(entity.getX(), entity.getEyeY(), entity.getZ());
+ 
+-            return vec3d1.distanceTo(vec3d) > 128.0D ? false : this.level().clip(new ClipContext(vec3d, vec3d1, ClipContext.Block.COLLIDER, ClipContext.Fluid.NONE, this)).getType() == HitResult.Type.MISS;
++            return vec3d1.distanceTo(vec3d) > 128.0D ? false : this.level().clipDirect(vec3d, vec3d1, net.minecraft.world.phys.shapes.CollisionContext.of(this)) == HitResult.Type.MISS; // Paper
+         }
+     }
+ 
+diff --git a/src/main/java/net/minecraft/world/level/BlockGetter.java b/src/main/java/net/minecraft/world/level/BlockGetter.java
+index d6d8bbc98fc71997cb52521d59ebb59d727d3c22..3b31a1927aaed7fffc1b4f4bcefc12120d66af3d 100644
+--- a/src/main/java/net/minecraft/world/level/BlockGetter.java
++++ b/src/main/java/net/minecraft/world/level/BlockGetter.java
+@@ -68,6 +68,19 @@ public interface BlockGetter extends LevelHeightAccessor {
+         });
+     }
+ 
++    // Paper start - Broken down variant of the method below, used by Level#clipDirect
++    @Nullable
++    default BlockHitResult.Type clipDirect(Vec3 start, Vec3 end, BlockPos pos, BlockState state, net.minecraft.world.phys.shapes.CollisionContext collisionContext) {
++        if (state.isAir()) {
++            return null;
++        }
++
++        final VoxelShape voxelshape = ClipContext.Block.COLLIDER.get(state, this, pos, collisionContext);
++        final BlockHitResult hitResult = this.clipWithInteractionOverride(start, end, pos, voxelshape, state);
++        return hitResult == null ? null : hitResult.getType();
++    }
++    // Paper end
++
+     // CraftBukkit start - moved block handling into separate method for use by Block#rayTrace
+     default BlockHitResult clip(ClipContext raytrace1, BlockPos blockposition) {
+             BlockState iblockdata = this.getBlockState(blockposition);
+diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
+index 809f7db469583ea90fbb165cf180dc87055c6105..37d5abf5a18b90695d1cea9e365c764e93b918bf 100644
+--- a/src/main/java/net/minecraft/world/level/Level.java
++++ b/src/main/java/net/minecraft/world/level/Level.java
+@@ -283,6 +283,90 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
+         return null;
+     }
+ 
++    // Paper start - Broken down method of raytracing for EntityLiving#hasLineOfSight, replaces BlockGetter#clip(CollisionContext)
++    public net.minecraft.world.phys.BlockHitResult.Type clipDirect(Vec3 start, Vec3 end, net.minecraft.world.phys.shapes.CollisionContext collisionContext) {
++        // most of this code comes from BlockGetter#clip(CollisionContext, BiFunction, Function), but removes the needless functions
++        if (start.equals(end)) {
++            return net.minecraft.world.phys.BlockHitResult.Type.MISS;
++        }
++
++        final double endX = Mth.lerp(-1.0E-7D, end.x, start.x);
++        final double endY = Mth.lerp(-1.0E-7D, end.y, start.y);
++        final double endZ = Mth.lerp(-1.0E-7D, end.z, start.z);
++
++        final double startX = Mth.lerp(-1.0E-7D, start.x, end.x);
++        final double startY = Mth.lerp(-1.0E-7D, start.y, end.y);
++        final double startZ = Mth.lerp(-1.0E-7D, start.z, end.z);
++
++        int currentX = Mth.floor(startX);
++        int currentY = Mth.floor(startY);
++        int currentZ = Mth.floor(startZ);
++
++        final BlockPos.MutableBlockPos currentBlock = new BlockPos.MutableBlockPos(currentX, currentY, currentZ);
++
++        LevelChunk chunk = this.getChunkIfLoaded(currentBlock);
++        if (chunk == null) {
++            return net.minecraft.world.phys.BlockHitResult.Type.MISS;
++        }
++
++        final net.minecraft.world.phys.BlockHitResult.Type initialCheck = this.clipDirect(start, end, currentBlock, chunk.getBlockState(currentBlock), collisionContext);
++        if (initialCheck != null) {
++            return initialCheck;
++        }
++
++        final double diffX = endX - startX;
++        final double diffY = endY - startY;
++        final double diffZ = endZ - startZ;
++
++        final int xDirection = Mth.sign(diffX);
++        final int yDirection = Mth.sign(diffY);
++        final int zDirection = Mth.sign(diffZ);
++
++        final double normalizedX = xDirection == 0 ? Double.MAX_VALUE : (double) xDirection / diffX;
++        final double normalizedY = yDirection == 0 ? Double.MAX_VALUE : (double) yDirection / diffY;
++        final double normalizedZ = zDirection == 0 ? Double.MAX_VALUE : (double) zDirection / diffZ;
++
++        double normalizedXDirection = normalizedX * (xDirection > 0 ? 1.0D - Mth.frac(startX) : Mth.frac(startX));
++        double normalizedYDirection = normalizedY * (yDirection > 0 ? 1.0D - Mth.frac(startY) : Mth.frac(startY));
++        double normalizedZDirection = normalizedZ * (zDirection > 0 ? 1.0D - Mth.frac(startZ) : Mth.frac(startZ));
++
++        net.minecraft.world.phys.BlockHitResult.Type result;
++
++        do {
++            if (normalizedXDirection > 1.0D && normalizedYDirection > 1.0D && normalizedZDirection > 1.0D) {
++                return net.minecraft.world.phys.BlockHitResult.Type.MISS;
++            }
++
++            if (normalizedXDirection < normalizedYDirection) {
++                if (normalizedXDirection < normalizedZDirection) {
++                    currentX += xDirection;
++                    normalizedXDirection += normalizedX;
++                } else {
++                    currentZ += zDirection;
++                    normalizedZDirection += normalizedZ;
++                }
++            } else if (normalizedYDirection < normalizedZDirection) {
++                currentY += yDirection;
++                normalizedYDirection += normalizedY;
++            } else {
++                currentZ += zDirection;
++                normalizedZDirection += normalizedZ;
++            }
++
++            currentBlock.set(currentX, currentY, currentZ);
++            if (chunk.getPos().x != currentBlock.getX() >> 4 || chunk.getPos().z != currentBlock.getZ() >> 4) {
++                chunk = this.getChunkIfLoaded(currentBlock);
++                if (chunk == null) {
++                    return net.minecraft.world.phys.BlockHitResult.Type.MISS;
++                }
++            }
++            result = this.clipDirect(start, end, currentBlock, chunk.getBlockState(currentBlock), collisionContext);
++        } while (result == null);
++
++        return result;
++    }
++    // Paper end
++
+     public boolean isInWorldBounds(BlockPos pos) {
+         return !this.isOutsideBuildHeight(pos) && Level.isInWorldBoundsHorizontal(pos);
+     }

patches/unapplied/server/0074-handle-NaN-health-absorb-values-and-repair-bad-data.patch

@@ -0,0 +1,57 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Sun, 27 Sep 2015 01:18:02 -0400
+Subject: [PATCH] handle NaN health/absorb values and repair bad data
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
+index 53e666df97e74bbb8e96207ebc50e3e9acc455de..8435d0c62c716d4cce5d8b512d8a42658f774876 100644
+--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
++++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
+@@ -794,7 +794,13 @@ public abstract class LivingEntity extends Entity implements Attackable {
+ 
+     @Override
+     public void readAdditionalSaveData(CompoundTag nbt) {
+-        this.setAbsorptionAmount(nbt.getFloat("AbsorptionAmount"));
++        // Paper start - jvm keeps optimizing the setter
++        float absorptionAmount = nbt.getFloat("AbsorptionAmount");
++        if (Float.isNaN(absorptionAmount)) {
++            absorptionAmount = 0;
++        }
++        this.setAbsorptionAmount(absorptionAmount);
++        // Paper end
+         if (nbt.contains("Attributes", 9) && this.level() != null && !this.level().isClientSide) {
+             this.getAttributes().load(nbt.getList("Attributes", 10));
+         }
+@@ -1312,6 +1318,10 @@ public abstract class LivingEntity extends Entity implements Attackable {
+     }
+ 
+     public void setHealth(float health) {
++        // Paper start
++        if (Float.isNaN(health)) { health = getMaxHealth(); if (this.valid) {
++            System.err.println("[NAN-HEALTH] " + getScoreboardName() + " had NaN health set");
++        } } // Paper end
+         // CraftBukkit start - Handle scaled health
+         if (this instanceof ServerPlayer) {
+             org.bukkit.craftbukkit.entity.CraftPlayer player = ((ServerPlayer) this).getBukkitEntity();
+@@ -3472,7 +3482,7 @@ public abstract class LivingEntity extends Entity implements Attackable {
+     }
+ 
+     public void setAbsorptionAmount(float amount) {
+-        if (amount < 0.0F) {
++        if (amount < 0.0F || Float.isNaN(amount)) { // Paper
+             amount = 0.0F;
+         }
+ 
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+index df91d5f9161e9bf65556191a3079ae0f008ab698..a6d9dcf8487c63a0469f5fec27bef131b444942a 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+@@ -2149,6 +2149,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
+     }
+ 
+     public void setRealHealth(double health) {
++        if (Double.isNaN(health)) {return;} // Paper
+         this.health = health;
+     }
+ 

patches/unapplied/server/0075-Use-a-Shared-Random-for-Entities.patch

@@ -0,0 +1,113 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Tue, 22 Mar 2016 00:33:47 -0400
+Subject: [PATCH] Use a Shared Random for Entities
+
+Reduces memory usage and provides ensures more randomness, Especially since a lot of garbage entity objects get created.
+
+diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
+index 2d37f4da83282e3430353e01c756a0d952150360..2f15c9df59ebfbe7619e190b8d6ef1fe122809f8 100644
+--- a/src/main/java/net/minecraft/world/entity/Entity.java
++++ b/src/main/java/net/minecraft/world/entity/Entity.java
+@@ -162,6 +162,79 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+         return tag.contains("Bukkit.updateLevel") && tag.getInt("Bukkit.updateLevel") >= level;
+     }
+ 
++    // Paper start
++    public static RandomSource SHARED_RANDOM = new RandomRandomSource();
++    private static final class RandomRandomSource extends java.util.Random implements net.minecraft.world.level.levelgen.BitRandomSource {
++        private boolean locked = false;
++
++        @Override
++        public synchronized void setSeed(long seed) {
++            if (locked) {
++                LOGGER.error("Ignoring setSeed on Entity.SHARED_RANDOM", new Throwable());
++            } else {
++                super.setSeed(seed);
++                locked = true;
++            }
++        }
++
++        @Override
++        public RandomSource fork() {
++            return new net.minecraft.world.level.levelgen.LegacyRandomSource(this.nextLong());
++        }
++
++        @Override
++        public net.minecraft.world.level.levelgen.PositionalRandomFactory forkPositional() {
++            return new net.minecraft.world.level.levelgen.LegacyRandomSource.LegacyPositionalRandomFactory(this.nextLong());
++        }
++
++        // these below are added to fix reobf issues that I don't wanna deal with right now
++        @Override
++        public int next(int bits) {
++            return super.next(bits);
++        }
++
++        @Override
++        public int nextInt(int origin, int bound) {
++            return net.minecraft.world.level.levelgen.BitRandomSource.super.nextInt(origin, bound);
++        }
++
++        @Override
++        public long nextLong() {
++            return net.minecraft.world.level.levelgen.BitRandomSource.super.nextLong();
++        }
++
++        @Override
++        public int nextInt() {
++            return net.minecraft.world.level.levelgen.BitRandomSource.super.nextInt();
++        }
++
++        @Override
++        public int nextInt(int bound) {
++            return net.minecraft.world.level.levelgen.BitRandomSource.super.nextInt(bound);
++        }
++
++        @Override
++        public boolean nextBoolean() {
++            return net.minecraft.world.level.levelgen.BitRandomSource.super.nextBoolean();
++        }
++
++        @Override
++        public float nextFloat() {
++            return net.minecraft.world.level.levelgen.BitRandomSource.super.nextFloat();
++        }
++
++        @Override
++        public double nextDouble() {
++            return net.minecraft.world.level.levelgen.BitRandomSource.super.nextDouble();
++        }
++
++        @Override
++        public double nextGaussian() {
++            return super.nextGaussian();
++        }
++    }
++    // Paper end
++
+     private CraftEntity bukkitEntity;
+ 
+     public CraftEntity getBukkitEntity() {
+@@ -406,7 +479,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+         this.bb = Entity.INITIAL_AABB;
+         this.stuckSpeedMultiplier = Vec3.ZERO;
+         this.nextStep = 1.0F;
+-        this.random = RandomSource.create();
++        this.random = SHARED_RANDOM; // Paper
+         this.remainingFireTicks = -this.getFireImmuneTicks();
+         this.fluidHeight = new Object2DoubleArrayMap(2);
+         this.fluidOnEyes = new HashSet();
+diff --git a/src/main/java/net/minecraft/world/entity/animal/Squid.java b/src/main/java/net/minecraft/world/entity/animal/Squid.java
+index 891d8b4c8cb73d5e310970066831ab3e2af14e91..f60c4cd0543fd5d50fa7e2c1a9e8381227adb540 100644
+--- a/src/main/java/net/minecraft/world/entity/animal/Squid.java
++++ b/src/main/java/net/minecraft/world/entity/animal/Squid.java
+@@ -44,7 +44,7 @@ public class Squid extends WaterAnimal {
+ 
+     public Squid(EntityType<? extends Squid> type, Level world) {
+         super(type, world);
+-        this.random.setSeed((long)this.getId());
++        //this.random.setSeed((long)this.getId()); // Paper - we set the random to shared, do not clobber the seed
+         this.tentacleSpeed = 1.0F / (this.random.nextFloat() + 1.0F) * 0.2F;
+     }
+ 

patches/unapplied/server/0076-Configurable-spawn-chances-for-skeleton-horses.patch

@@ -0,0 +1,19 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Zach Brown <zach.brown@destroystokyo.com>
+Date: Tue, 22 Mar 2016 12:04:28 -0500
+Subject: [PATCH] Configurable spawn chances for skeleton horses
+
+
+diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
+index d48ad601dc9f8b3ed3bc0e2dd068981eb7613c30..5cde98b0225799bccdb84ce6b6cf06b904d5986c 100644
+--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
++++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
+@@ -837,7 +837,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
+             blockposition = this.findLightningTargetAround(this.getBlockRandomPos(j, 0, k, 15));
+             if (this.isRainingAt(blockposition)) {
+                 DifficultyInstance difficultydamagescaler = this.getCurrentDifficultyAt(blockposition);
+-                boolean flag1 = this.getGameRules().getBoolean(GameRules.RULE_DOMOBSPAWNING) && this.random.nextDouble() < (double) difficultydamagescaler.getEffectiveDifficulty() * 0.01D && !this.getBlockState(blockposition.below()).is(Blocks.LIGHTNING_ROD);
++                boolean flag1 = this.getGameRules().getBoolean(GameRules.RULE_DOMOBSPAWNING) && this.random.nextDouble() < (double) difficultydamagescaler.getEffectiveDifficulty() * this.paperConfig().entities.spawning.skeletonHorseThunderSpawnChance.or(0.01D) && !this.getBlockState(blockposition.below()).is(Blocks.LIGHTNING_ROD); // Paper
+ 
+                 if (flag1) {
+                     SkeletonHorse entityhorseskeleton = (SkeletonHorse) EntityType.SKELETON_HORSE.create(this);

patches/unapplied/server/0077-Optimize-isInWorldBounds-and-getBlockState-for-inlin.patch

@@ -0,0 +1,166 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Thu, 3 Mar 2016 02:07:55 -0600
+Subject: [PATCH] Optimize isInWorldBounds and getBlockState for inlining
+
+Hot methods, so reduce # of instructions for the method.
+
+Move is valid location test to the BlockPosition class so that it can access local variables.
+
+Replace all calls to the new place to the unnecessary forward.
+
+Optimize getType and getBlockData to manually inline and optimize the calls
+
+diff --git a/src/main/java/net/minecraft/core/Vec3i.java b/src/main/java/net/minecraft/core/Vec3i.java
+index 1b29c6872ebe54351f28c1f1f38b22561ba785ee..40950db0c242c65dfd4de247c86249354d12108f 100644
+--- a/src/main/java/net/minecraft/core/Vec3i.java
++++ b/src/main/java/net/minecraft/core/Vec3i.java
+@@ -31,6 +31,12 @@ public class Vec3i implements Comparable<Vec3i> {
+         });
+     }
+ 
++    // Paper start
++    public final boolean isInsideBuildHeightAndWorldBoundsHorizontal(net.minecraft.world.level.LevelHeightAccessor levelHeightAccessor) {
++        return getX() >= -30000000 && getZ() >= -30000000 && getX() < 30000000 && getZ() < 30000000 && !levelHeightAccessor.isOutsideBuildHeight(getY());
++    }
++    // Paper end
++
+     public Vec3i(int x, int y, int z) {
+         this.x = x;
+         this.y = y;
+diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
+index 37d5abf5a18b90695d1cea9e365c764e93b918bf..5502d037279ba876f5e4c6728cc678f128bce9d4 100644
+--- a/src/main/java/net/minecraft/world/level/Level.java
++++ b/src/main/java/net/minecraft/world/level/Level.java
+@@ -368,7 +368,7 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
+     // Paper end
+ 
+     public boolean isInWorldBounds(BlockPos pos) {
+-        return !this.isOutsideBuildHeight(pos) && Level.isInWorldBoundsHorizontal(pos);
++        return pos.isInsideBuildHeightAndWorldBoundsHorizontal(this); // Paper - use better/optimized check
+     }
+ 
+     public static boolean isInSpawnableBounds(BlockPos pos) {
+diff --git a/src/main/java/net/minecraft/world/level/chunk/ChunkAccess.java b/src/main/java/net/minecraft/world/level/chunk/ChunkAccess.java
+index 2caac1a3d80e6c490aa16aa6bc1067065b665c69..525c89bc926f13af6f94fc46c897525e37477eca 100644
+--- a/src/main/java/net/minecraft/world/level/chunk/ChunkAccess.java
++++ b/src/main/java/net/minecraft/world/level/chunk/ChunkAccess.java
+@@ -166,6 +166,7 @@ public abstract class ChunkAccess implements BlockGetter, BiomeManager.NoiseBiom
+         return GameEventListenerRegistry.NOOP;
+     }
+ 
++    public abstract BlockState getBlockState(final int x, final int y, final int z); // Paper
+     @Nullable
+     public abstract BlockState setBlockState(BlockPos pos, BlockState state, boolean moved);
+ 
+diff --git a/src/main/java/net/minecraft/world/level/chunk/EmptyLevelChunk.java b/src/main/java/net/minecraft/world/level/chunk/EmptyLevelChunk.java
+index f49cc61840c6588fca301b4c5c3aaeede03a323e..785fa679860413b736122f8e88a92e683cbdd99f 100644
+--- a/src/main/java/net/minecraft/world/level/chunk/EmptyLevelChunk.java
++++ b/src/main/java/net/minecraft/world/level/chunk/EmptyLevelChunk.java
+@@ -55,6 +55,12 @@ public class EmptyLevelChunk extends LevelChunk {
+     public void setBlockEmptinessMap(final boolean[] emptinessMap) {}
+     // Paper end - starlight
+ 
++    // Paper start
++    @Override
++    public BlockState getBlockState(int x, int y, int z) {
++        return Blocks.VOID_AIR.defaultBlockState();
++    }
++    // Paper end
+     @Override
+     public BlockState getBlockState(BlockPos pos) {
+         return Blocks.VOID_AIR.defaultBlockState();
+diff --git a/src/main/java/net/minecraft/world/level/chunk/ImposterProtoChunk.java b/src/main/java/net/minecraft/world/level/chunk/ImposterProtoChunk.java
+index 60e760b42dd6471a229dfd45490dcf8c51979d35..4a3ac7dedf5cb1e76f16ec4f18e82afc717d0ced 100644
+--- a/src/main/java/net/minecraft/world/level/chunk/ImposterProtoChunk.java
++++ b/src/main/java/net/minecraft/world/level/chunk/ImposterProtoChunk.java
+@@ -91,6 +91,12 @@ public class ImposterProtoChunk extends ProtoChunk {
+     public BlockState getBlockState(BlockPos pos) {
+         return this.wrapped.getBlockState(pos);
+     }
++    // Paper start
++    @Override
++    public final BlockState getBlockState(final int x, final int y, final int z) {
++        return this.wrapped.getBlockStateFinal(x, y, z);
++    }
++    // Paper end
+ 
+     @Override
+     public FluidState getFluidState(BlockPos pos) {
+diff --git a/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java b/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java
+index 36701f196756dc7c6820cac516ff880d00a43b17..72637bb342f1260debf925f5b3fde8ec7dd3cfff 100644
+--- a/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java
++++ b/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java
+@@ -295,12 +295,29 @@ public class LevelChunk extends ChunkAccess {
+         }
+     }
+ 
++    // Paper start - Optimize getBlockData to reduce instructions
+     @Override
+     public BlockState getBlockState(BlockPos pos) {
+-        int i = pos.getX();
+-        int j = pos.getY();
+-        int k = pos.getZ();
++        return this.getBlockStateFinal(pos.getX(), pos.getY(), pos.getZ());
++    }
++
++    @Override
++    public BlockState getBlockState(final int x, final int y, final int z) {
++        return this.getBlockStateFinal(x, y, z);
++    }
++    public final BlockState getBlockStateFinal(final int x, final int y, final int z) {
++        // Method body / logic copied from below
++        final int i = this.getSectionIndex(y);
++        if (i < 0 || i >= this.sections.length || this.sections[i].nonEmptyBlockCount == 0 || this.sections[i].hasOnlyAir()) {
++            return Blocks.AIR.defaultBlockState();
++        }
++        // Inlined ChunkSection.getType() and DataPaletteBlock.a(int,int,int)
++        return this.sections[i].states.get((y & 15) << 8 | (z & 15) << 4 | x & 15);
+ 
++    }
++
++    public BlockState getBlockState_unused(int i, int j, int k) {
++        // Paper end
+         if (this.level.isDebug()) {
+             BlockState iblockdata = null;
+ 
+diff --git a/src/main/java/net/minecraft/world/level/chunk/LevelChunkSection.java b/src/main/java/net/minecraft/world/level/chunk/LevelChunkSection.java
+index d59392c322936ce89b759ac9787c8f4f0b228af6..2c3ea88bac229df67bd742e16d2106d80bcc8889 100644
+--- a/src/main/java/net/minecraft/world/level/chunk/LevelChunkSection.java
++++ b/src/main/java/net/minecraft/world/level/chunk/LevelChunkSection.java
+@@ -19,7 +19,7 @@ public class LevelChunkSection {
+     public static final int SECTION_HEIGHT = 16;
+     public static final int SECTION_SIZE = 4096;
+     public static final int BIOME_CONTAINER_BITS = 2;
+-    private short nonEmptyBlockCount;
++    short nonEmptyBlockCount; // Paper - package-private
+     private short tickingBlockCount;
+     private short tickingFluidCount;
+     public final PalettedContainer<BlockState> states;
+diff --git a/src/main/java/net/minecraft/world/level/chunk/ProtoChunk.java b/src/main/java/net/minecraft/world/level/chunk/ProtoChunk.java
+index b2c0c7fd06fcd720b4c0875f08a90b6b672c96b2..6c72eb36020bc05104b21e52cea89de09b85f2d7 100644
+--- a/src/main/java/net/minecraft/world/level/chunk/ProtoChunk.java
++++ b/src/main/java/net/minecraft/world/level/chunk/ProtoChunk.java
+@@ -92,14 +92,18 @@ public class ProtoChunk extends ChunkAccess {
+ 
+     @Override
+     public BlockState getBlockState(BlockPos pos) {
+-        int i = pos.getY();
+-        if (this.isOutsideBuildHeight(i)) {
++        // Paper start
++        return getBlockState(pos.getX(), pos.getY(), pos.getZ());
++    }
++    public BlockState getBlockState(final int x, final int y, final int z) {
++        if (this.isOutsideBuildHeight(y)) {
+             return Blocks.VOID_AIR.defaultBlockState();
+         } else {
+-            LevelChunkSection levelChunkSection = this.getSection(this.getSectionIndex(i));
+-            return levelChunkSection.hasOnlyAir() ? Blocks.AIR.defaultBlockState() : levelChunkSection.getBlockState(pos.getX() & 15, i & 15, pos.getZ() & 15);
++            LevelChunkSection levelChunkSection = this.getSections()[this.getSectionIndex(y)];
++            return levelChunkSection.hasOnlyAir() ? Blocks.AIR.defaultBlockState() : levelChunkSection.getBlockState(x & 15, y & 15, z & 15);
+         }
+     }
++    // Paper end
+ 
+     @Override
+     public FluidState getFluidState(BlockPos pos) {

patches/unapplied/server/0078-Only-process-BlockPhysicsEvent-if-a-plugin-has-a-lis.patch

@@ -0,0 +1,70 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Mon, 28 Mar 2016 19:55:45 -0400
+Subject: [PATCH] Only process BlockPhysicsEvent if a plugin has a listener
+
+Saves on some object allocation and processing when no plugin listens to this
+
+diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
+index ebfc20247ac5a548e6616a099b8885db9c7a8d25..4b9de3ca81b60eb4a916006cdfbc2a630a390a39 100644
+--- a/src/main/java/net/minecraft/server/MinecraftServer.java
++++ b/src/main/java/net/minecraft/server/MinecraftServer.java
+@@ -1364,6 +1364,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+ 
+         while (iterator.hasNext()) {
+             ServerLevel worldserver = (ServerLevel) iterator.next();
++            worldserver.hasPhysicsEvent =  org.bukkit.event.block.BlockPhysicsEvent.getHandlerList().getRegisteredListeners().length > 0; // Paper
+ 
+             this.profiler.push(() -> {
+                 return worldserver + " " + worldserver.dimension().location();
+diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
+index 5cde98b0225799bccdb84ce6b6cf06b904d5986c..699fc5f11efa8240723854cd2e91877b278f9495 100644
+--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
++++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
+@@ -220,6 +220,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
+     // CraftBukkit start
+     public final LevelStorageSource.LevelStorageAccess convertable;
+     public final UUID uuid;
++    public boolean hasPhysicsEvent = true; // Paper
+ 
+     @Override public LevelChunk getChunkIfLoaded(int x, int z) { // Paper - this was added in world too but keeping here for NMS ABI
+         return this.chunkSource.getChunk(x, z, false);
+diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
+index 5502d037279ba876f5e4c6728cc678f128bce9d4..ba7760b0b478c6f24dcbaa64919a4766e107a720 100644
+--- a/src/main/java/net/minecraft/world/level/Level.java
++++ b/src/main/java/net/minecraft/world/level/Level.java
+@@ -580,7 +580,7 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
+                 // CraftBukkit start
+                 iblockdata1.updateIndirectNeighbourShapes(this, blockposition, k, j - 1); // Don't call an event for the old block to limit event spam
+                 CraftWorld world = ((ServerLevel) this).getWorld();
+-                if (world != null) {
++                if (world != null && ((ServerLevel)this).hasPhysicsEvent) { // Paper
+                     BlockPhysicsEvent event = new BlockPhysicsEvent(world.getBlockAt(blockposition.getX(), blockposition.getY(), blockposition.getZ()), CraftBlockData.fromData(iblockdata));
+                     this.getCraftServer().getPluginManager().callEvent(event);
+ 
+diff --git a/src/main/java/net/minecraft/world/level/block/BushBlock.java b/src/main/java/net/minecraft/world/level/block/BushBlock.java
+index d40e791529911ca81398ac267a819415da91502a..03fde6e47c4a347c62fe9b4a3351769aedf874f6 100644
+--- a/src/main/java/net/minecraft/world/level/block/BushBlock.java
++++ b/src/main/java/net/minecraft/world/level/block/BushBlock.java
+@@ -24,7 +24,7 @@ public class BushBlock extends Block {
+     public BlockState updateShape(BlockState state, Direction direction, BlockState neighborState, LevelAccessor world, BlockPos pos, BlockPos neighborPos) {
+         // CraftBukkit start
+         if (!state.canSurvive(world, pos)) {
+-            if (!org.bukkit.craftbukkit.event.CraftEventFactory.callBlockPhysicsEvent(world, pos).isCancelled()) {
++            if (!(world instanceof net.minecraft.server.level.ServerLevel && ((net.minecraft.server.level.ServerLevel) world).hasPhysicsEvent) || !org.bukkit.craftbukkit.event.CraftEventFactory.callBlockPhysicsEvent(world, pos).isCancelled()) { // Paper
+                 return Blocks.AIR.defaultBlockState();
+             }
+         }
+diff --git a/src/main/java/net/minecraft/world/level/block/DoublePlantBlock.java b/src/main/java/net/minecraft/world/level/block/DoublePlantBlock.java
+index ec66f00703fcb68aa567b2d14a756729371320e0..9db66b393e057d93a8025b803ae0ad2a1bca61f6 100644
+--- a/src/main/java/net/minecraft/world/level/block/DoublePlantBlock.java
++++ b/src/main/java/net/minecraft/world/level/block/DoublePlantBlock.java
+@@ -95,7 +95,7 @@ public class DoublePlantBlock extends BushBlock {
+ 
+     protected static void preventCreativeDropFromBottomPart(Level world, BlockPos pos, BlockState state, Player player) {
+         // CraftBukkit start
+-        if (org.bukkit.craftbukkit.event.CraftEventFactory.callBlockPhysicsEvent(world, pos).isCancelled()) {
++        if (((net.minecraft.server.level.ServerLevel)world).hasPhysicsEvent && org.bukkit.craftbukkit.event.CraftEventFactory.callBlockPhysicsEvent(world, pos).isCancelled()) { // Paper
+             return;
+         }
+         // CraftBukkit end

patches/unapplied/server/0079-Entity-AddTo-RemoveFrom-World-Events.patch

@@ -0,0 +1,26 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Mon, 28 Mar 2016 20:32:58 -0400
+Subject: [PATCH] Entity AddTo/RemoveFrom World Events
+
+
+diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
+index 699fc5f11efa8240723854cd2e91877b278f9495..7da059a2e8560250021654f3d5586027c15c7dd3 100644
+--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
++++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
+@@ -2373,6 +2373,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
+                 entity.setOrigin(entity.getOriginVector().toLocation(getWorld()));
+             }
+             // Paper end
++            new com.destroystokyo.paper.event.entity.EntityAddToWorldEvent(entity.getBukkitEntity()).callEvent(); // Paper - fire while valid
+         }
+ 
+         public void onTrackingEnd(Entity entity) {
+@@ -2448,6 +2449,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
+                 }
+             }
+             // CraftBukkit end
++            new com.destroystokyo.paper.event.entity.EntityRemoveFromWorldEvent(entity.getBukkitEntity()).callEvent(); // Paper - fire while valid
+         }
+ 
+         public void onSectionChange(Entity entity) {

patches/unapplied/server/0080-Configurable-Chunk-Inhabited-Time.patch

@@ -0,0 +1,30 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Mon, 28 Mar 2016 20:46:14 -0400
+Subject: [PATCH] Configurable Chunk Inhabited Time
+
+Vanilla stores how long a chunk has been active on a server, and dynamically scales some
+aspects of vanilla gameplay to this factor.
+
+For people who want all chunks to be treated equally, you can chose a fixed value.
+
+This allows to fine-tune vanilla gameplay.
+
+diff --git a/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java b/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java
+index 72637bb342f1260debf925f5b3fde8ec7dd3cfff..704f0500649acdbff2caf94f702a6685ecf4c986 100644
+--- a/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java
++++ b/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java
+@@ -280,6 +280,13 @@ public class LevelChunk extends ChunkAccess {
+         return new ChunkAccess.TicksToSave(this.blockTicks, this.fluidTicks);
+     }
+ 
++    // Paper start
++    @Override
++    public long getInhabitedTime() {
++        return this.level.paperConfig().chunks.fixedChunkInhabitedTime < 0 ? super.getInhabitedTime() : this.level.paperConfig().chunks.fixedChunkInhabitedTime;
++    }
++    // Paper end
++
+     @Override
+     public GameEventListenerRegistry getListenerRegistry(int ySectionCoord) {
+         Level world = this.level;

patches/unapplied/server/0081-EntityPathfindEvent.patch

@@ -0,0 +1,149 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Mon, 28 Mar 2016 21:22:26 -0400
+Subject: [PATCH] EntityPathfindEvent
+
+Fires when an Entity decides to start moving to a location.
+
+diff --git a/src/main/java/net/minecraft/world/entity/ai/navigation/FlyingPathNavigation.java b/src/main/java/net/minecraft/world/entity/ai/navigation/FlyingPathNavigation.java
+index a8f69e48937b3ebd2f57a4da747e6762c4a77934..acd0b946cab86eb173e713535194d3a9347c7d48 100644
+--- a/src/main/java/net/minecraft/world/entity/ai/navigation/FlyingPathNavigation.java
++++ b/src/main/java/net/minecraft/world/entity/ai/navigation/FlyingPathNavigation.java
+@@ -40,7 +40,7 @@ public class FlyingPathNavigation extends PathNavigation {
+ 
+     @Override
+     public Path createPath(Entity entity, int distance) {
+-        return this.createPath(entity.blockPosition(), distance);
++        return this.createPath(entity.blockPosition(), entity, distance); // Paper - Forward target entity
+     }
+ 
+     @Override
+diff --git a/src/main/java/net/minecraft/world/entity/ai/navigation/GroundPathNavigation.java b/src/main/java/net/minecraft/world/entity/ai/navigation/GroundPathNavigation.java
+index 518f47f52105e299e037fe2e7d5870d7555be4bc..71934af2dc4d209a9fbccfd36b5f2815ec196892 100644
+--- a/src/main/java/net/minecraft/world/entity/ai/navigation/GroundPathNavigation.java
++++ b/src/main/java/net/minecraft/world/entity/ai/navigation/GroundPathNavigation.java
+@@ -39,14 +39,14 @@ public class GroundPathNavigation extends PathNavigation {
+     }
+ 
+     @Override
+-    public Path createPath(BlockPos target, int distance) {
++    public Path createPath(BlockPos target, @javax.annotation.Nullable Entity entity, int distance) { // Paper
+         if (this.level.getBlockState(target).isAir()) {
+             BlockPos blockPos;
+             for(blockPos = target.below(); blockPos.getY() > this.level.getMinBuildHeight() && this.level.getBlockState(blockPos).isAir(); blockPos = blockPos.below()) {
+             }
+ 
+             if (blockPos.getY() > this.level.getMinBuildHeight()) {
+-                return super.createPath(blockPos.above(), distance);
++                return super.createPath(blockPos.above(), entity, distance); // Paper
+             }
+ 
+             while(blockPos.getY() < this.level.getMaxBuildHeight() && this.level.getBlockState(blockPos).isAir()) {
+@@ -57,19 +57,19 @@ public class GroundPathNavigation extends PathNavigation {
+         }
+ 
+         if (!this.level.getBlockState(target).isSolid()) {
+-            return super.createPath(target, distance);
++            return super.createPath(target, entity, distance); // Paper
+         } else {
+             BlockPos blockPos2;
+             for(blockPos2 = target.above(); blockPos2.getY() < this.level.getMaxBuildHeight() && this.level.getBlockState(blockPos2).isSolid(); blockPos2 = blockPos2.above()) {
+             }
+ 
+-            return super.createPath(blockPos2, distance);
++            return super.createPath(blockPos2, entity, distance); // Paper
+         }
+     }
+ 
+     @Override
+     public Path createPath(Entity entity, int distance) {
+-        return this.createPath(entity.blockPosition(), distance);
++        return this.createPath(entity.blockPosition(), entity, distance); // Paper - Forward target entity
+     }
+ 
+     private int getSurfaceY() {
+diff --git a/src/main/java/net/minecraft/world/entity/ai/navigation/PathNavigation.java b/src/main/java/net/minecraft/world/entity/ai/navigation/PathNavigation.java
+index f16e9bcefedb582a4bfe7a0b7ec8a97799f5e5ad..1a69a46340eee4f0273c373cc1a40b4d069a89d4 100644
+--- a/src/main/java/net/minecraft/world/entity/ai/navigation/PathNavigation.java
++++ b/src/main/java/net/minecraft/world/entity/ai/navigation/PathNavigation.java
+@@ -110,7 +110,13 @@ public abstract class PathNavigation {
+ 
+     @Nullable
+     public Path createPath(BlockPos target, int distance) {
+-        return this.createPath(ImmutableSet.of(target), 8, false, distance);
++        // Paper start - add target entity parameter
++        return this.createPath(target, null, distance);
++    }
++    @Nullable
++    public Path createPath(BlockPos target, @Nullable Entity entity, int distance) {
++        return this.createPath(ImmutableSet.of(target), entity, 8, false, distance);
++        // Paper end
+     }
+ 
+     @Nullable
+@@ -120,7 +126,7 @@ public abstract class PathNavigation {
+ 
+     @Nullable
+     public Path createPath(Entity entity, int distance) {
+-        return this.createPath(ImmutableSet.of(entity.blockPosition()), 16, true, distance);
++        return this.createPath(ImmutableSet.of(entity.blockPosition()), entity, 16, true, distance); // Paper
+     }
+ 
+     @Nullable
+@@ -130,6 +136,16 @@ public abstract class PathNavigation {
+ 
+     @Nullable
+     protected Path createPath(Set<BlockPos> positions, int range, boolean useHeadPos, int distance, float followRange) {
++        return this.createPath(positions, null, range, useHeadPos, distance, followRange);
++    }
++
++    @Nullable
++    protected Path createPath(Set<BlockPos> positions, @Nullable Entity target, int range, boolean useHeadPos, int distance) {
++        return this.createPath(positions, target, range, useHeadPos, distance, (float) this.mob.getAttributeValue(Attributes.FOLLOW_RANGE));
++    }
++
++    @Nullable protected Path createPath(Set<BlockPos> positions, @Nullable Entity target, int range, boolean useHeadPos, int distance, float followRange) {
++        // Paper end
+         if (positions.isEmpty()) {
+             return null;
+         } else if (this.mob.getY() < (double)this.level.getMinBuildHeight()) {
+@@ -139,6 +155,23 @@ public abstract class PathNavigation {
+         } else if (this.path != null && !this.path.isDone() && positions.contains(this.targetPos)) {
+             return this.path;
+         } else {
++            // Paper start - Pathfind event
++            boolean copiedSet = false;
++            for (BlockPos possibleTarget : positions) {
++                if (!new com.destroystokyo.paper.event.entity.EntityPathfindEvent(this.mob.getBukkitEntity(),
++                    io.papermc.paper.util.MCUtil.toLocation(this.mob.level(), possibleTarget), target == null ? null : target.getBukkitEntity()).callEvent()) {
++                    if (!copiedSet) {
++                        copiedSet = true;
++                        positions = new java.util.HashSet<>(positions);
++                    }
++                    // note: since we copy the set this remove call is safe, since we're iterating over the old copy
++                    positions.remove(possibleTarget);
++                    if (positions.isEmpty()) {
++                        return null;
++                    }
++                }
++            }
++            // Paper end
+             this.level.getProfiler().push("pathfind");
+             BlockPos blockPos = useHeadPos ? this.mob.blockPosition().above() : this.mob.blockPosition();
+             int i = (int)(followRange + (float)range);
+diff --git a/src/main/java/net/minecraft/world/entity/ai/navigation/WallClimberNavigation.java b/src/main/java/net/minecraft/world/entity/ai/navigation/WallClimberNavigation.java
+index e9b49c72aa73dfcef6c136d9ed7bb5044fe8405d..2d1b2b84d7cf5bafe2cccfa0dec2bae805dbe7cf 100644
+--- a/src/main/java/net/minecraft/world/entity/ai/navigation/WallClimberNavigation.java
++++ b/src/main/java/net/minecraft/world/entity/ai/navigation/WallClimberNavigation.java
+@@ -16,9 +16,9 @@ public class WallClimberNavigation extends GroundPathNavigation {
+     }
+ 
+     @Override
+-    public Path createPath(BlockPos target, int distance) {
++    public Path createPath(BlockPos target, @Nullable Entity entity, int distance) { // Paper
+         this.pathToPosition = target;
+-        return super.createPath(target, distance);
++        return super.createPath(target, entity, distance); // Paper
+     }
+ 
+     @Override

patches/unapplied/server/0082-Sanitise-RegionFileCache-and-make-configurable.patch

@@ -0,0 +1,25 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Antony Riley <antony@cyberiantiger.org>
+Date: Tue, 29 Mar 2016 08:22:55 +0300
+Subject: [PATCH] Sanitise RegionFileCache and make configurable.
+
+RegionFileCache prior to this patch would close every single open region
+file upon reaching a size of 256.
+This patch modifies that behaviour so it closes the the least recently
+used RegionFile.
+The implementation uses a LinkedHashMap as an LRU cache (modified from HashMap).
+The maximum size of the RegionFileCache is also made configurable.
+
+diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
+index a16047cab2709d197489215de66bf24901523a1c..4c1b1ac36ef09a9cc8da6e8ee71f82d4a67478df 100644
+--- a/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
++++ b/src/main/java/net/minecraft/world/level/chunk/storage/RegionFileStorage.java
+@@ -91,7 +91,7 @@ public class RegionFileStorage implements AutoCloseable {
+                 return null;
+             }
+             // Paper end - cache regionfile does not exist state
+-            if (this.regionCache.size() >= 256) {
++            if (this.regionCache.size() >= io.papermc.paper.configuration.GlobalConfiguration.get().misc.regionFileCacheSize) { // Paper - configurable
+                 ((RegionFile) this.regionCache.removeLast()).close();
+             }
+ 

patches/unapplied/server/0083-Do-not-load-chunks-for-Pathfinding.patch

@@ -0,0 +1,42 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Thu, 31 Mar 2016 19:17:58 -0400
+Subject: [PATCH] Do not load chunks for Pathfinding
+
+
+diff --git a/src/main/java/net/minecraft/world/level/pathfinder/WalkNodeEvaluator.java b/src/main/java/net/minecraft/world/level/pathfinder/WalkNodeEvaluator.java
+index b7995e6159c865f8e2e7865f7eb51936a9720311..10503d6d8b6daf645cf4360ee289d5e25144c976 100644
+--- a/src/main/java/net/minecraft/world/level/pathfinder/WalkNodeEvaluator.java
++++ b/src/main/java/net/minecraft/world/level/pathfinder/WalkNodeEvaluator.java
+@@ -459,7 +459,12 @@ public class WalkNodeEvaluator extends NodeEvaluator {
+                 for(int n = -1; n <= 1; ++n) {
+                     if (l != 0 || n != 0) {
+                         pos.set(i + l, j + m, k + n);
+-                        BlockState blockState = world.getBlockState(pos);
++                        // Paper start
++                        BlockState blockState = world.getBlockStateIfLoaded(pos);
++                        if (blockState == null) {
++                            return BlockPathTypes.BLOCKED;
++                        } else {
++                        // Paper end
+                         if (blockState.is(Blocks.CACTUS) || blockState.is(Blocks.SWEET_BERRY_BUSH)) {
+                             return BlockPathTypes.DANGER_OTHER;
+                         }
+@@ -475,6 +480,7 @@ public class WalkNodeEvaluator extends NodeEvaluator {
+                         if (blockState.is(Blocks.WITHER_ROSE) || blockState.is(Blocks.POINTED_DRIPSTONE)) {
+                             return BlockPathTypes.DAMAGE_CAUTIOUS;
+                         }
++                        } // Paper
+                     }
+                 }
+             }
+@@ -484,7 +490,8 @@ public class WalkNodeEvaluator extends NodeEvaluator {
+     }
+ 
+     protected static BlockPathTypes getBlockPathTypeRaw(BlockGetter world, BlockPos pos) {
+-        BlockState blockState = world.getBlockState(pos);
++        BlockState blockState = world.getBlockStateIfLoaded(pos); // Paper
++        if (blockState == null) return BlockPathTypes.BLOCKED; // Paper
+         Block block = blockState.getBlock();
+         if (blockState.isAir()) {
+             return BlockPathTypes.OPEN;

patches/unapplied/server/0084-Add-PlayerUseUnknownEntityEvent.patch

@@ -0,0 +1,72 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jedediah Smith <jedediah@silencegreys.com>
+Date: Sat, 2 Apr 2016 05:09:16 -0400
+Subject: [PATCH] Add PlayerUseUnknownEntityEvent
+
+Adds the PlayerUseUnknownEntityEvent to be used by plugins dealing with
+virtual entities/entities that are not actually known to the server.
+
+Co-authored-by: Nassim Jahnke <nassim@njahnke.dev>
+
+diff --git a/src/main/java/net/minecraft/network/protocol/game/ServerboundInteractPacket.java b/src/main/java/net/minecraft/network/protocol/game/ServerboundInteractPacket.java
+index 644a0fdea6576647539b96528717dbaeab498d93..221e64a66ff12a8de5c75992fc26a54a03b317e7 100644
+--- a/src/main/java/net/minecraft/network/protocol/game/ServerboundInteractPacket.java
++++ b/src/main/java/net/minecraft/network/protocol/game/ServerboundInteractPacket.java
+@@ -169,4 +169,14 @@ public class ServerboundInteractPacket implements Packet<ServerGamePacketListene
+             buf.writeEnum(this.hand);
+         }
+     }
++
++    // Paper start - PlayerUseUnknownEntityEvent
++    public int getEntityId() {
++        return this.entityId;
++    }
++
++    public boolean isAttack() {
++        return this.action.getType() == ActionType.ATTACK;
++    }
++    // Paper end - PlayerUseUnknownEntityEvent
+ }
+diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+index 1c84143d271e70f6ffea301f3e93cd8ed8fd9bd1..6b87ed8b453b149bdd74eb3b164aa3bbcc8c2b13 100644
+--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
++++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+@@ -2522,8 +2522,38 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Tic
+                 });
+             }
+         }
++        // Paper start - PlayerUseUnknownEntityEvent
++        else {
++            packet.dispatch(new net.minecraft.network.protocol.game.ServerboundInteractPacket.Handler() {
++                @Override
++                public void onInteraction(net.minecraft.world.InteractionHand hand) {
++                    ServerGamePacketListenerImpl.this.callPlayerUseUnknownEntityEvent(packet, hand, null);
++                }
++
++                @Override
++                public void onInteraction(net.minecraft.world.InteractionHand hand, net.minecraft.world.phys.Vec3 pos) {
++                    ServerGamePacketListenerImpl.this.callPlayerUseUnknownEntityEvent(packet, hand, pos);
++                }
++
++                @Override
++                public void onAttack() {
++                    ServerGamePacketListenerImpl.this.callPlayerUseUnknownEntityEvent(packet, net.minecraft.world.InteractionHand.MAIN_HAND, null);
++                }
++            });
++        }
++
++    }
+ 
++    private void callPlayerUseUnknownEntityEvent(ServerboundInteractPacket packet, InteractionHand hand, @Nullable net.minecraft.world.phys.Vec3 vector) {
++        this.cserver.getPluginManager().callEvent(new com.destroystokyo.paper.event.player.PlayerUseUnknownEntityEvent(
++            this.getCraftPlayer(),
++            packet.getEntityId(),
++            packet.isAttack(),
++            hand == InteractionHand.MAIN_HAND ? EquipmentSlot.HAND : EquipmentSlot.OFF_HAND,
++            vector != null ? new org.bukkit.util.Vector(vector.x, vector.y, vector.z) : null)
++        );
+     }
++    // Paper end - PlayerUseUnknownEntityEvent
+ 
+     @Override
+     public void handleClientCommand(ServerboundClientCommandPacket packet) {

patches/unapplied/server/0085-Configurable-Grass-Spread-Tick-Rate.patch

@@ -0,0 +1,26 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Sun, 3 Apr 2016 16:28:17 -0400
+Subject: [PATCH] Configurable Grass Spread Tick Rate
+
+
+diff --git a/src/main/java/net/minecraft/world/level/block/SpreadingSnowyDirtBlock.java b/src/main/java/net/minecraft/world/level/block/SpreadingSnowyDirtBlock.java
+index 1df22561b2d39066b6b30f10ea43edd734e3b50a..1fe07f8f9b28faf076209f7ad235fd5dc948b294 100644
+--- a/src/main/java/net/minecraft/world/level/block/SpreadingSnowyDirtBlock.java
++++ b/src/main/java/net/minecraft/world/level/block/SpreadingSnowyDirtBlock.java
+@@ -2,6 +2,7 @@ package net.minecraft.world.level.block;
+ 
+ import net.minecraft.core.BlockPos;
+ import net.minecraft.core.Direction;
++import net.minecraft.server.MinecraftServer;
+ import net.minecraft.server.level.ServerLevel;
+ import net.minecraft.tags.FluidTags;
+ import net.minecraft.util.RandomSource;
+@@ -39,6 +40,7 @@ public abstract class SpreadingSnowyDirtBlock extends SnowyDirtBlock {
+ 
+     @Override
+     public void randomTick(BlockState state, ServerLevel world, BlockPos pos, RandomSource random) {
++        if (this instanceof GrassBlock && world.paperConfig().tickRates.grassSpread != 1 && (world.paperConfig().tickRates.grassSpread < 1 || (MinecraftServer.currentTick + pos.hashCode()) % world.paperConfig().tickRates.grassSpread != 0)) { return; } // Paper
+         if (!SpreadingSnowyDirtBlock.canBeGrass(state, world, pos)) {
+             // CraftBukkit start
+             if (org.bukkit.craftbukkit.event.CraftEventFactory.callBlockFadeEvent(world, pos, Blocks.DIRT.defaultBlockState()).isCancelled()) {

patches/unapplied/server/0086-Fix-Cancelling-BlockPlaceEvent-triggering-physics.patch

@@ -0,0 +1,18 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Sun, 3 Apr 2016 17:48:50 -0400
+Subject: [PATCH] Fix Cancelling BlockPlaceEvent triggering physics
+
+
+diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
+index 7da059a2e8560250021654f3d5586027c15c7dd3..35b59c83a35bc3a4d05bc95b0caec1f1865589c0 100644
+--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
++++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
+@@ -1598,6 +1598,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
+ 
+     @Override
+     public void updateNeighborsAt(BlockPos pos, Block sourceBlock) {
++        if (captureBlockStates) { return; } // Paper - Cancel all physics during placement
+         this.neighborUpdater.updateNeighborsAtExceptFromFacing(pos, sourceBlock, (Direction) null);
+     }
+ 

patches/unapplied/server/0087-Optimize-DataBits.patch

@@ -0,0 +1,118 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Tue, 5 Apr 2016 21:38:58 -0400
+Subject: [PATCH] Optimize DataBits
+
+Remove Debug checks as these are super hot and causing noticeable hits
+
+Before: http://i.imgur.com/nQsMzAE.png
+After: http://i.imgur.com/nJ46crB.png
+
+Optimize redundant converting of static fields into an unsigned long each call by precomputing it in ctor
+
+diff --git a/src/main/java/net/minecraft/util/SimpleBitStorage.java b/src/main/java/net/minecraft/util/SimpleBitStorage.java
+index f677cc252d5510a2365e73dc42bd266e56115e83..2b3fd62dca2d1475075b5dcde56cea85b749cb44 100644
+--- a/src/main/java/net/minecraft/util/SimpleBitStorage.java
++++ b/src/main/java/net/minecraft/util/SimpleBitStorage.java
+@@ -11,8 +11,8 @@ public class SimpleBitStorage implements BitStorage {
+     private final long mask;
+     private final int size;
+     private final int valuesPerLong;
+-    private final int divideMul;
+-    private final int divideAdd;
++    private final int divideMul; private final long divideMulUnsigned; // Paper - referenced in b(int) with 2 Integer.toUnsignedLong calls
++    private final int divideAdd; private final long divideAddUnsigned; // Paper
+     private final int divideShift;
+ 
+     public SimpleBitStorage(int elementBits, int size, int[] data) {
+@@ -56,8 +56,8 @@ public class SimpleBitStorage implements BitStorage {
+         this.mask = (1L << elementBits) - 1L;
+         this.valuesPerLong = (char)(64 / elementBits);
+         int i = 3 * (this.valuesPerLong - 1);
+-        this.divideMul = MAGIC[i + 0];
+-        this.divideAdd = MAGIC[i + 1];
++        this.divideMul = MAGIC[i + 0]; this.divideMulUnsigned = Integer.toUnsignedLong(this.divideMul); // Paper
++        this.divideAdd = MAGIC[i + 1]; this.divideAddUnsigned = Integer.toUnsignedLong(this.divideAdd); // Paper
+         this.divideShift = MAGIC[i + 2];
+         int j = (size + this.valuesPerLong - 1) / this.valuesPerLong;
+         if (data != null) {
+@@ -73,15 +73,15 @@ public class SimpleBitStorage implements BitStorage {
+     }
+ 
+     private int cellIndex(int index) {
+-        long l = Integer.toUnsignedLong(this.divideMul);
+-        long m = Integer.toUnsignedLong(this.divideAdd);
+-        return (int)((long)index * l + m >> 32 >> this.divideShift);
++        //long l = Integer.toUnsignedLong(this.divideMul); // Paper
++        //long m = Integer.toUnsignedLong(this.divideAdd); // Paper
++        return (int) ((long) index * this.divideMulUnsigned + this.divideAddUnsigned >> 32 >> this.divideShift); // Paper
+     }
+ 
+     @Override
+-    public int getAndSet(int index, int value) {
+-        Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index);
+-        Validate.inclusiveBetween(0L, this.mask, (long)value);
++    public final int getAndSet(int index, int value) { // Paper - make final for inline
++        //Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index); // Paper
++        //Validate.inclusiveBetween(0L, this.mask, (long)value); // Paper
+         int i = this.cellIndex(index);
+         long l = this.data[i];
+         int j = (index - i * this.valuesPerLong) * this.bits;
+@@ -91,9 +91,9 @@ public class SimpleBitStorage implements BitStorage {
+     }
+ 
+     @Override
+-    public void set(int index, int value) {
+-        Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index);
+-        Validate.inclusiveBetween(0L, this.mask, (long)value);
++    public final void set(int index, int value) { // Paper - make final for inline
++        //Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index); // Paper
++        //Validate.inclusiveBetween(0L, this.mask, (long)value); // Paper
+         int i = this.cellIndex(index);
+         long l = this.data[i];
+         int j = (index - i * this.valuesPerLong) * this.bits;
+@@ -101,8 +101,8 @@ public class SimpleBitStorage implements BitStorage {
+     }
+ 
+     @Override
+-    public int get(int index) {
+-        Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index);
++    public final int get(int index) { // Paper - make final for inline
++        //Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index);
+         int i = this.cellIndex(index);
+         long l = this.data[i];
+         int j = (index - i * this.valuesPerLong) * this.bits;
+diff --git a/src/main/java/net/minecraft/util/ZeroBitStorage.java b/src/main/java/net/minecraft/util/ZeroBitStorage.java
+index 0710c72441c832a93275f3f9bd9dd7643dc0f229..f0f764f36fb92c64ab2dc8a0a50c3f48321c3c9a 100644
+--- a/src/main/java/net/minecraft/util/ZeroBitStorage.java
++++ b/src/main/java/net/minecraft/util/ZeroBitStorage.java
+@@ -13,21 +13,21 @@ public class ZeroBitStorage implements BitStorage {
+     }
+ 
+     @Override
+-    public int getAndSet(int index, int value) {
+-        Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index);
+-        Validate.inclusiveBetween(0L, 0L, (long)value);
++    public final int getAndSet(int index, int value) { // Paper - make final for inline
++        //Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index); // Paper
++        //Validate.inclusiveBetween(0L, 0L, (long)value); // Paper
+         return 0;
+     }
+ 
+     @Override
+-    public void set(int index, int value) {
+-        Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index);
+-        Validate.inclusiveBetween(0L, 0L, (long)value);
++    public final void set(int index, int value) { // Paper - make final for inline
++        //Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index); // Paper
++        //Validate.inclusiveBetween(0L, 0L, (long)value); // Paper
+     }
+ 
+     @Override
+-    public int get(int index) {
+-        Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index);
++    public final int get(int index) { // Paper - make final for inline
++        //Validate.inclusiveBetween(0L, (long)(this.size - 1), (long)index); // Paper
+         return 0;
+     }
+ 

patches/unapplied/server/0088-Option-to-use-vanilla-per-world-scoreboard-coloring-.patch

@@ -0,0 +1,50 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Zach Brown <zach.brown@destroystokyo.com>
+Date: Wed, 6 Apr 2016 01:04:23 -0500
+Subject: [PATCH] Option to use vanilla per-world scoreboard coloring on names
+
+This change is basically a bandaid to fix CB's complete and utter lack
+of support for vanilla scoreboard name modifications.
+
+In the future, finding a way to merge the vanilla expectations in with
+bukkit's concept of a display name would be preferable. There was a PR
+for this on CB at one point but I can't find it. We may need to do this
+ourselves at some point in the future.
+
+diff --git a/src/main/java/io/papermc/paper/adventure/ChatProcessor.java b/src/main/java/io/papermc/paper/adventure/ChatProcessor.java
+index 57081e84d50f7eca7ea11540b550da8269378e9e..e4fd372a1d585887287253a02531cd192929377b 100644
+--- a/src/main/java/io/papermc/paper/adventure/ChatProcessor.java
++++ b/src/main/java/io/papermc/paper/adventure/ChatProcessor.java
+@@ -19,6 +19,7 @@ import net.kyori.adventure.audience.Audience;
+ import net.kyori.adventure.audience.ForwardingAudience;
+ import net.kyori.adventure.key.Key;
+ import net.kyori.adventure.text.Component;
++import net.minecraft.ChatFormatting;
+ import net.minecraft.Optionull;
+ import net.minecraft.Util;
+ import net.minecraft.core.registries.Registries;
+@@ -31,6 +32,7 @@ import net.minecraft.resources.ResourceLocation;
+ import net.minecraft.server.MinecraftServer;
+ import net.minecraft.server.level.ServerPlayer;
+ import org.bukkit.command.ConsoleCommandSender;
++import org.bukkit.craftbukkit.CraftWorld;
+ import org.bukkit.craftbukkit.entity.CraftPlayer;
+ import org.bukkit.craftbukkit.util.LazyPlayerSet;
+ import org.bukkit.craftbukkit.util.Waitable;
+@@ -367,10 +369,16 @@ public final class ChatProcessor {
+     }
+ 
+     static String legacyDisplayName(final CraftPlayer player) {
++        if (((org.bukkit.craftbukkit.CraftWorld) player.getWorld()).getHandle().paperConfig().scoreboards.useVanillaWorldScoreboardNameColoring) {
++            return legacySection().serialize(player.teamDisplayName()) + ChatFormatting.RESET;
++        }
+         return player.getDisplayName();
+     }
+ 
+     static Component displayName(final CraftPlayer player) {
++        if (((CraftWorld) player.getWorld()).getHandle().paperConfig().scoreboards.useVanillaWorldScoreboardNameColoring) {
++            return player.teamDisplayName();
++        }
+         return player.displayName();
+     }
+ 

patches/unapplied/server/0089-Configurable-Player-Collision.patch

@@ -0,0 +1,109 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Wed, 13 Apr 2016 02:10:49 -0400
+Subject: [PATCH] Configurable Player Collision
+
+
+diff --git a/src/main/java/net/minecraft/network/protocol/game/ClientboundSetPlayerTeamPacket.java b/src/main/java/net/minecraft/network/protocol/game/ClientboundSetPlayerTeamPacket.java
+index 1294b38262505b0d54089e428df9b363219de1f0..ee37ec0de1ca969144824427ae42b0c81434a1b4 100644
+--- a/src/main/java/net/minecraft/network/protocol/game/ClientboundSetPlayerTeamPacket.java
++++ b/src/main/java/net/minecraft/network/protocol/game/ClientboundSetPlayerTeamPacket.java
+@@ -193,7 +193,7 @@ public class ClientboundSetPlayerTeamPacket implements Packet<ClientGamePacketLi
+             buf.writeComponent(this.displayName);
+             buf.writeByte(this.options);
+             buf.writeUtf(this.nametagVisibility);
+-            buf.writeUtf(this.collisionRule);
++            buf.writeUtf(!io.papermc.paper.configuration.GlobalConfiguration.get().collisions.enablePlayerCollisions ? "never" : this.collisionRule); // Paper
+             buf.writeEnum(this.color);
+             buf.writeComponent(this.playerPrefix);
+             buf.writeComponent(this.playerSuffix);
+diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
+index 4b9de3ca81b60eb4a916006cdfbc2a630a390a39..bb8546e5f7f223cb499ab404845aba524726ea16 100644
+--- a/src/main/java/net/minecraft/server/MinecraftServer.java
++++ b/src/main/java/net/minecraft/server/MinecraftServer.java
+@@ -586,6 +586,20 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+             this.server.getPluginManager().callEvent(new org.bukkit.event.world.WorldLoadEvent(worldserver.getWorld()));
+         }
+ 
++        // Paper start - Handle collideRule team for player collision toggle
++        final ServerScoreboard scoreboard = this.getScoreboard();
++        final java.util.Collection<String> toRemove = scoreboard.getPlayerTeams().stream().filter(team -> team.getName().startsWith("collideRule_")).map(net.minecraft.world.scores.PlayerTeam::getName).collect(java.util.stream.Collectors.toList());
++        for (String teamName : toRemove) {
++            scoreboard.removePlayerTeam(scoreboard.getPlayerTeam(teamName)); // Clean up after ourselves
++        }
++
++        if (!io.papermc.paper.configuration.GlobalConfiguration.get().collisions.enablePlayerCollisions) {
++            this.getPlayerList().collideRuleTeamName = org.apache.commons.lang3.StringUtils.left("collideRule_" + java.util.concurrent.ThreadLocalRandom.current().nextInt(), 16);
++            net.minecraft.world.scores.PlayerTeam collideTeam = scoreboard.addPlayerTeam(this.getPlayerList().collideRuleTeamName);
++            collideTeam.setSeeFriendlyInvisibles(false); // Because we want to mimic them not being on a team at all
++        }
++        // Paper end
++
+         this.server.enablePlugins(org.bukkit.plugin.PluginLoadOrder.POSTWORLD);
+         this.server.getPluginManager().callEvent(new ServerLoadEvent(ServerLoadEvent.LoadType.STARTUP));
+         this.connection.acceptConnections();
+diff --git a/src/main/java/net/minecraft/server/players/PlayerList.java b/src/main/java/net/minecraft/server/players/PlayerList.java
+index 9e835d63e1592fc064b73c51eecd8b84cbedfa33..7901a8e3659be05d901fd5140e025392ffa0c27c 100644
+--- a/src/main/java/net/minecraft/server/players/PlayerList.java
++++ b/src/main/java/net/minecraft/server/players/PlayerList.java
+@@ -99,6 +99,7 @@ import net.minecraft.world.level.storage.PlayerDataStorage;
+ import net.minecraft.world.phys.Vec3;
+ import net.minecraft.world.scores.Objective;
+ import net.minecraft.world.scores.PlayerTeam;
++import net.minecraft.world.scores.Scoreboard; // Paper
+ import net.minecraft.world.scores.Team;
+ import org.slf4j.Logger;
+ 
+@@ -164,6 +165,7 @@ public abstract class PlayerList {
+     // CraftBukkit start
+     private CraftServer cserver;
+     private final Map<String,ServerPlayer> playersByName = new java.util.HashMap<>();
++    public @Nullable String collideRuleTeamName; // Paper - Team name used for collideRule
+ 
+     public PlayerList(MinecraftServer server, LayeredRegistryAccess<RegistryLayer> registryManager, PlayerDataStorage saveHandler, int maxPlayers) {
+         this.cserver = server.server = new CraftServer((DedicatedServer) server, this);
+@@ -416,6 +418,13 @@ public abstract class PlayerList {
+ 
+         player.initInventoryMenu();
+         // CraftBukkit - Moved from above, added world
++        // Paper start - Add to collideRule team if needed
++        final Scoreboard scoreboard = this.getServer().getLevel(Level.OVERWORLD).getScoreboard();
++        final PlayerTeam collideRuleTeam = scoreboard.getPlayerTeam(this.collideRuleTeamName);
++        if (this.collideRuleTeamName != null && collideRuleTeam != null && player.getTeam() == null) {
++            scoreboard.addPlayerToTeam(player.getScoreboardName(), collideRuleTeam);
++        }
++        // Paper end
+         PlayerList.LOGGER.info("{}[{}] logged in with entity id {} at ([{}]{}, {}, {})", player.getName().getString(), s1, player.getId(), worldserver1.serverLevelData.getLevelName(), player.getX(), player.getY(), player.getZ());
+     }
+ 
+@@ -535,6 +544,16 @@ public abstract class PlayerList {
+         entityplayer.doTick(); // SPIGOT-924
+         // CraftBukkit end
+ 
++        // Paper start - Remove from collideRule team if needed
++        if (this.collideRuleTeamName != null) {
++            final Scoreboard scoreBoard = this.server.getLevel(Level.OVERWORLD).getScoreboard();
++            final PlayerTeam team = scoreBoard.getPlayersTeam(this.collideRuleTeamName);
++            if (entityplayer.getTeam() == team && team != null) {
++                scoreBoard.removePlayerFromTeam(entityplayer.getScoreboardName(), team);
++            }
++        }
++        // Paper end
++
+         this.save(entityplayer);
+         if (entityplayer.isPassenger()) {
+             Entity entity = entityplayer.getRootVehicle();
+@@ -1166,6 +1185,13 @@ public abstract class PlayerList {
+         }
+         // CraftBukkit end
+ 
++        // Paper start - Remove collideRule team if it exists
++        if (this.collideRuleTeamName != null) {
++            final Scoreboard scoreboard = this.getServer().getLevel(Level.OVERWORLD).getScoreboard();
++            final PlayerTeam team = scoreboard.getPlayersTeam(this.collideRuleTeamName);
++            if (team != null) scoreboard.removePlayerTeam(team);
++        }
++        // Paper end
+     }
+ 
+     // CraftBukkit start

patches/unapplied/server/0090-Add-handshake-event-to-allow-plugins-to-handle-clien.patch

@@ -0,0 +1,49 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: kashike <kashike@vq.lc>
+Date: Wed, 13 Apr 2016 20:21:38 -0700
+Subject: [PATCH] Add handshake event to allow plugins to handle client
+ handshaking logic themselves
+
+
+diff --git a/src/main/java/net/minecraft/server/network/ServerHandshakePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerHandshakePacketListenerImpl.java
+index 3d08ad662b02812a2b194f95fba55798b9976955..77d7f070cce1a47e41b5d4f5a1cc8c778352a126 100644
+--- a/src/main/java/net/minecraft/server/network/ServerHandshakePacketListenerImpl.java
++++ b/src/main/java/net/minecraft/server/network/ServerHandshakePacketListenerImpl.java
+@@ -89,9 +89,36 @@ public class ServerHandshakePacketListenerImpl implements ServerHandshakePacketL
+                     this.connection.disconnect(ichatmutablecomponent);
+                 } else {
+                     this.connection.setListener(new ServerLoginPacketListenerImpl(this.server, this.connection));
++                // Paper start - handshake event
++                boolean proxyLogicEnabled = org.spigotmc.SpigotConfig.bungee;
++                boolean handledByEvent = false;
++                // Try and handle the handshake through the event
++                if (com.destroystokyo.paper.event.player.PlayerHandshakeEvent.getHandlerList().getRegisteredListeners().length != 0) { // Hello? Can you hear me?
++                    java.net.SocketAddress socketAddress = this.connection.address;
++                    String hostnameOfRemote = socketAddress instanceof java.net.InetSocketAddress ? ((java.net.InetSocketAddress) socketAddress).getHostString() : InetAddress.getLoopbackAddress().getHostAddress();
++                    com.destroystokyo.paper.event.player.PlayerHandshakeEvent event = new com.destroystokyo.paper.event.player.PlayerHandshakeEvent(packet.hostName, hostnameOfRemote, !proxyLogicEnabled);
++                    if (event.callEvent()) {
++                        // If we've failed somehow, let the client know so and go no further.
++                        if (event.isFailed()) {
++                            Component component = io.papermc.paper.adventure.PaperAdventure.asVanilla(event.failMessage());
++                            this.connection.send(new ClientboundLoginDisconnectPacket(component));
++                            this.connection.disconnect(component);
++                            return;
++                        }
++
++                        if (event.getServerHostname() != null) packet.hostName = event.getServerHostname();
++                        if (event.getSocketAddressHostname() != null) this.connection.address = new java.net.InetSocketAddress(event.getSocketAddressHostname(), socketAddress instanceof java.net.InetSocketAddress ? ((java.net.InetSocketAddress) socketAddress).getPort() : 0);
++                        this.connection.spoofedUUID = event.getUniqueId();
++                        this.connection.spoofedProfile = gson.fromJson(event.getPropertiesJson(), com.mojang.authlib.properties.Property[].class);
++                        handledByEvent = true; // Hooray, we did it!
++                    }
++                }
+                     // Spigot Start
+                     String[] split = packet.hostName.split("\00");
+-                    if (org.spigotmc.SpigotConfig.bungee) {
++                    // Don't try and handle default logic if it's been handled by the event.
++                    if (!handledByEvent && proxyLogicEnabled) {
++                        // Paper end
++                    // if (org.spigotmc.SpigotConfig.bungee) { // Paper - comment out, we check above!
+                         if ( ( split.length == 3 || split.length == 4 ) && ( ServerHandshakePacketListenerImpl.HOST_PATTERN.matcher( split[1] ).matches() ) ) {
+                             packet.hostName = split[0];
+                             connection.address = new java.net.InetSocketAddress(split[1], ((java.net.InetSocketAddress) this.connection.getRemoteAddress()).getPort());

patches/unapplied/server/0091-Configurable-RCON-IP-address.patch

@@ -0,0 +1,47 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Sat, 16 Apr 2016 00:39:33 -0400
+Subject: [PATCH] Configurable RCON IP address
+
+For servers with multiple IP's, ability to bind to a specific interface.
+
+== AT ==
+public net.minecraft.server.dedicated.Settings getStringRaw(Ljava/lang/String;)Ljava/lang/String;
+
+diff --git a/src/main/java/net/minecraft/server/dedicated/DedicatedServerProperties.java b/src/main/java/net/minecraft/server/dedicated/DedicatedServerProperties.java
+index d2d5a6cd70299c169f50684e442ce90be5840f62..d144fc518442762e45f213550a9b0a21f77fcdd1 100644
+--- a/src/main/java/net/minecraft/server/dedicated/DedicatedServerProperties.java
++++ b/src/main/java/net/minecraft/server/dedicated/DedicatedServerProperties.java
+@@ -108,6 +108,8 @@ public class DedicatedServerProperties extends Settings<DedicatedServerPropertie
+     private final DedicatedServerProperties.WorldDimensionData worldDimensionData;
+     public final WorldOptions worldOptions;
+ 
++    public final String rconIp; // Paper - Add rcon ip
++
+     // CraftBukkit start
+     public DedicatedServerProperties(Properties properties, OptionSet optionset) {
+         super(properties, optionset);
+@@ -165,6 +167,10 @@ public class DedicatedServerProperties extends Settings<DedicatedServerPropertie
+         }, WorldPresets.NORMAL.location().toString()));
+         this.serverResourcePackInfo = DedicatedServerProperties.getServerPackInfo(this.get("resource-pack", ""), this.get("resource-pack-sha1", ""), this.getLegacyString("resource-pack-hash"), this.get("require-resource-pack", false), this.get("resource-pack-prompt", ""));
+         this.initialDataPackConfiguration = DedicatedServerProperties.getDatapackConfig(this.get("initial-enabled-packs", String.join(",", WorldDataConfiguration.DEFAULT.dataPacks().getEnabled())), this.get("initial-disabled-packs", String.join(",", WorldDataConfiguration.DEFAULT.dataPacks().getDisabled())));
++        // Paper start - Configurable rcon ip
++        final String rconIp = this.getStringRaw("rcon.ip");
++        this.rconIp = rconIp == null ? this.serverIp : rconIp;
++        // Paper end
+     }
+ 
+     // CraftBukkit start
+diff --git a/src/main/java/net/minecraft/server/rcon/thread/RconThread.java b/src/main/java/net/minecraft/server/rcon/thread/RconThread.java
+index cb61eaf8447c8340c4b4e1079c0a6aecd41a6116..3bf60f640aa9fa4cabd2b3e5d3931e8467b9df24 100644
+--- a/src/main/java/net/minecraft/server/rcon/thread/RconThread.java
++++ b/src/main/java/net/minecraft/server/rcon/thread/RconThread.java
+@@ -60,7 +60,7 @@ public class RconThread extends GenericThread {
+     @Nullable
+     public static RconThread create(ServerInterface server) {
+         DedicatedServerProperties dedicatedServerProperties = server.getProperties();
+-        String string = server.getServerIp();
++        String string = dedicatedServerProperties.rconIp; // Paper - Configurable rcon ip
+         if (string.isEmpty()) {
+             string = "0.0.0.0";
+         }

patches/unapplied/server/0092-EntityRegainHealthEvent-isFastRegen-API.patch

@@ -0,0 +1,42 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Zach Brown <zach.brown@destroystokyo.com>
+Date: Fri, 22 Apr 2016 01:43:11 -0500
+Subject: [PATCH] EntityRegainHealthEvent isFastRegen API
+
+Don't even get me started
+
+diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
+index 8435d0c62c716d4cce5d8b512d8a42658f774876..d7c437dc575a06e1cdf7b393acaeee6007424687 100644
+--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
++++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
+@@ -1291,10 +1291,16 @@ public abstract class LivingEntity extends Entity implements Attackable {
+     }
+ 
+     public void heal(float f, EntityRegainHealthEvent.RegainReason regainReason) {
++        // Paper start - Forward
++        heal(f, regainReason, false);
++    }
++
++    public void heal(float f, EntityRegainHealthEvent.RegainReason regainReason, boolean isFastRegen) {
++        // Paper end
+         float f1 = this.getHealth();
+ 
+         if (f1 > 0.0F) {
+-            EntityRegainHealthEvent event = new EntityRegainHealthEvent(this.getBukkitEntity(), f, regainReason);
++            EntityRegainHealthEvent event = new EntityRegainHealthEvent(this.getBukkitEntity(), f, regainReason, isFastRegen); // Paper
+             // Suppress during worldgen
+             if (this.valid) {
+                 this.level().getCraftServer().getPluginManager().callEvent(event);
+diff --git a/src/main/java/net/minecraft/world/food/FoodData.java b/src/main/java/net/minecraft/world/food/FoodData.java
+index 5ff0eba33f848de5172944274e14062090ab7407..2038df72f8d7d33d4105de8129628daf21de6f0f 100644
+--- a/src/main/java/net/minecraft/world/food/FoodData.java
++++ b/src/main/java/net/minecraft/world/food/FoodData.java
+@@ -83,7 +83,7 @@ public class FoodData {
+             if (this.tickTimer >= this.saturatedRegenRate) { // CraftBukkit
+                 float f = Math.min(this.saturationLevel, 6.0F);
+ 
+-                player.heal(f / 6.0F, org.bukkit.event.entity.EntityRegainHealthEvent.RegainReason.SATIATED); // CraftBukkit - added RegainReason
++                player.heal(f / 6.0F, org.bukkit.event.entity.EntityRegainHealthEvent.RegainReason.SATIATED, true); // CraftBukkit - added RegainReason // Paper - This is fast regen
+                 // this.addExhaustion(f); CraftBukkit - EntityExhaustionEvent
+                 player.causeFoodExhaustion(f, org.bukkit.event.entity.EntityExhaustionEvent.ExhaustionReason.REGEN); // CraftBukkit - EntityExhaustionEvent
+                 this.tickTimer = 0;

patches/unapplied/server/0093-Add-ability-to-configure-frosted_ice-properties.patch

@@ -0,0 +1,33 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: kashike <kashike@vq.lc>
+Date: Thu, 21 Apr 2016 23:51:55 -0700
+Subject: [PATCH] Add ability to configure frosted_ice properties
+
+
+diff --git a/src/main/java/net/minecraft/world/level/block/FrostedIceBlock.java b/src/main/java/net/minecraft/world/level/block/FrostedIceBlock.java
+index e1916fe8a7aa736d9266efde954bbfbda38a3a65..331b642c36af97f7f05bd63f96d42d1af443e5a3 100644
+--- a/src/main/java/net/minecraft/world/level/block/FrostedIceBlock.java
++++ b/src/main/java/net/minecraft/world/level/block/FrostedIceBlock.java
+@@ -32,6 +32,7 @@ public class FrostedIceBlock extends IceBlock {
+ 
+     @Override
+     public void tick(BlockState state, ServerLevel world, BlockPos pos, RandomSource random) {
++        if (!world.paperConfig().environment.frostedIce.enabled) return; // Paper - add ability to disable frosted ice
+         if ((random.nextInt(3) == 0 || this.fewerNeigboursThan(world, pos, 4)) && world.getMaxLocalRawBrightness(pos) > 11 - state.getValue(AGE) - state.getLightBlock(world, pos) && this.slightlyMelt(state, world, pos)) {
+             BlockPos.MutableBlockPos mutableBlockPos = new BlockPos.MutableBlockPos();
+ 
+@@ -39,12 +40,12 @@ public class FrostedIceBlock extends IceBlock {
+                 mutableBlockPos.setWithOffset(pos, direction);
+                 BlockState blockState = world.getBlockState(mutableBlockPos);
+                 if (blockState.is(this) && !this.slightlyMelt(blockState, world, mutableBlockPos)) {
+-                    world.scheduleTick(mutableBlockPos, this, Mth.nextInt(random, 20, 40));
++                    world.scheduleTick(mutableBlockPos, this, Mth.nextInt(random, world.paperConfig().environment.frostedIce.delay.min, world.paperConfig().environment.frostedIce.delay.max)); // Paper - use configurable min/max delay
+                 }
+             }
+ 
+         } else {
+-            world.scheduleTick(pos, this, Mth.nextInt(random, 20, 40));
++            world.scheduleTick(pos, this, Mth.nextInt(random, world.paperConfig().environment.frostedIce.delay.min, world.paperConfig().environment.frostedIce.delay.max)); // Paper - use configurable min/max delay
+         }
+     }
+ 

patches/unapplied/server/0094-remove-null-possibility-for-getServer-singleton.patch

@@ -0,0 +1,38 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Thu, 28 Apr 2016 00:57:27 -0400
+Subject: [PATCH] remove null possibility for getServer singleton
+
+to stop IDE complaining about potential NPE
+
+diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
+index bb8546e5f7f223cb499ab404845aba524726ea16..0ee486f807d7c44e2252c4c744e29b506d916d9c 100644
+--- a/src/main/java/net/minecraft/server/MinecraftServer.java
++++ b/src/main/java/net/minecraft/server/MinecraftServer.java
+@@ -193,6 +193,7 @@ import co.aikar.timings.MinecraftTimings; // Paper
+ 
+ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTask> implements CommandSource, AutoCloseable {
+ 
++    private static MinecraftServer SERVER; // Paper
+     public static final Logger LOGGER = LogUtils.getLogger();
+     public static final net.kyori.adventure.text.logger.slf4j.ComponentLogger COMPONENT_LOGGER = net.kyori.adventure.text.logger.slf4j.ComponentLogger.logger(LOGGER.getName()); // Paper
+     public static final String VANILLA_BRAND = "vanilla";
+@@ -319,6 +320,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+ 
+     public MinecraftServer(OptionSet options, WorldLoader.DataLoadContext worldLoader, Thread thread, LevelStorageSource.LevelStorageAccess convertable_conversionsession, PackRepository resourcepackrepository, WorldStem worldstem, Proxy proxy, DataFixer datafixer, Services services, ChunkProgressListenerFactory worldloadlistenerfactory) {
+         super("Server");
++        SERVER = this; // Paper - better singleton
+         this.metricsRecorder = InactiveMetricsRecorder.INSTANCE;
+         this.profiler = this.metricsRecorder.getProfiler();
+         this.onMetricsRecordingStopped = (methodprofilerresults) -> {
+@@ -2323,9 +2325,8 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+         return false;
+     }
+ 
+-    @Deprecated
+     public static MinecraftServer getServer() {
+-        return (Bukkit.getServer() instanceof CraftServer) ? ((CraftServer) Bukkit.getServer()).getServer() : null;
++        return SERVER; // Paper
+     }
+     // CraftBukkit end
+ 

patches/unapplied/server/0095-Improve-Maps-in-item-frames-performance-and-bug-fixe.patch

@@ -0,0 +1,128 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Fri, 29 Apr 2016 20:02:00 -0400
+Subject: [PATCH] Improve Maps (in item frames) performance and bug fixes
+
+Maps used a modified version of rendering to support plugin controlled
+imaging on maps. The Craft Map Renderer is much slower than Vanilla,
+causing maps in item frames to cause a noticeable hit on server performance.
+
+This updates the map system to not use the Craft system if we detect that no
+custom renderers are in use, defaulting to the much simpler Vanilla system.
+
+Additionally, numerous issues to player position tracking on maps has been fixed.
+
+diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
+index 35b59c83a35bc3a4d05bc95b0caec1f1865589c0..17d9c5a6c357ac5e3eacd9e4d2cff9a05ec0f262 100644
+--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
++++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
+@@ -2394,6 +2394,7 @@ public class ServerLevel extends Level implements WorldGenLevel {
+                             {
+                                 if ( iter.next().player == entity )
+                                 {
++                                    map.decorations.remove(entity.getName().getString()); // Paper
+                                     iter.remove();
+                                 }
+                             }
+diff --git a/src/main/java/net/minecraft/world/entity/player/Player.java b/src/main/java/net/minecraft/world/entity/player/Player.java
+index c20753645585143421eb544a03884f0765eafb8b..11e7c30e448f192493c65330a65d89ed3e14139f 100644
+--- a/src/main/java/net/minecraft/world/entity/player/Player.java
++++ b/src/main/java/net/minecraft/world/entity/player/Player.java
+@@ -763,6 +763,14 @@ public abstract class Player extends LivingEntity {
+                 return null;
+             }
+             // CraftBukkit end
++            // Paper start - remove player from map on drop
++            if (itemstack.getItem() == Items.FILLED_MAP) {
++                net.minecraft.world.level.saveddata.maps.MapItemSavedData worldmap = net.minecraft.world.item.MapItem.getSavedData(itemstack, this.level());
++                if (worldmap != null) {
++                    worldmap.tickCarriedBy(this, itemstack);
++                }
++            }
++            // Paper end
+ 
+             return entityitem;
+         }
+diff --git a/src/main/java/net/minecraft/world/level/saveddata/maps/MapItemSavedData.java b/src/main/java/net/minecraft/world/level/saveddata/maps/MapItemSavedData.java
+index 60596c4ac2ebb8caf19d65591624275ba63b0199..d6ed799716f13cb3f72e66f9d57c6ec90c1eb272 100644
+--- a/src/main/java/net/minecraft/world/level/saveddata/maps/MapItemSavedData.java
++++ b/src/main/java/net/minecraft/world/level/saveddata/maps/MapItemSavedData.java
+@@ -63,6 +63,7 @@ public class MapItemSavedData extends SavedData {
+     public final Map<String, MapDecoration> decorations = Maps.newLinkedHashMap();
+     private final Map<String, MapFrame> frameMarkers = Maps.newHashMap();
+     private int trackedDecorationCount;
++    private org.bukkit.craftbukkit.map.RenderData vanillaRender = new org.bukkit.craftbukkit.map.RenderData(); // Paper
+ 
+     // CraftBukkit start
+     public final CraftMapView mapView;
+@@ -83,6 +84,7 @@ public class MapItemSavedData extends SavedData {
+         // CraftBukkit start
+         this.mapView = new CraftMapView(this);
+         this.server = (CraftServer) org.bukkit.Bukkit.getServer();
++        this.vanillaRender.buffer = colors; // Paper
+         // CraftBukkit end
+     }
+ 
+@@ -138,6 +140,7 @@ public class MapItemSavedData extends SavedData {
+         if (abyte.length == 16384) {
+             worldmap.colors = abyte;
+         }
++        worldmap.vanillaRender.buffer = abyte; // Paper
+ 
+         ListTag nbttaglist = nbt.getList("banners", 10);
+ 
+@@ -548,6 +551,21 @@ public class MapItemSavedData extends SavedData {
+ 
+     public class HoldingPlayer {
+ 
++        // Paper start
++        private void addSeenPlayers(java.util.Collection<MapDecoration> icons) {
++            org.bukkit.entity.Player player = (org.bukkit.entity.Player) this.player.getBukkitEntity();
++            MapItemSavedData.this.decorations.forEach((name, mapIcon) -> {
++                // If this cursor is for a player check visibility with vanish system
++                org.bukkit.entity.Player other = org.bukkit.Bukkit.getPlayerExact(name); // Spigot
++                if (other == null || player.canSee(other)) {
++                    icons.add(mapIcon);
++                }
++            });
++        }
++        private boolean shouldUseVanillaMap() {
++            return mapView.getRenderers().size() == 1 && mapView.getRenderers().get(0).getClass() == org.bukkit.craftbukkit.map.CraftMapRenderer.class;
++        }
++        // Paper end
+         public final Player player;
+         private boolean dirtyData = true;
+         private int minDirtyX;
+@@ -581,7 +599,9 @@ public class MapItemSavedData extends SavedData {
+         @Nullable
+         Packet<?> nextUpdatePacket(int mapId) {
+             MapItemSavedData.MapPatch worldmap_b;
+-            org.bukkit.craftbukkit.map.RenderData render = MapItemSavedData.this.mapView.render((org.bukkit.craftbukkit.entity.CraftPlayer) this.player.getBukkitEntity()); // CraftBukkit
++            if (!this.dirtyData && this.tick % 5 != 0) { this.tick++; return null; } // Paper - this won't end up sending, so don't render it!
++            boolean vanillaMaps = shouldUseVanillaMap(); // Paper
++            org.bukkit.craftbukkit.map.RenderData render = !vanillaMaps ? MapItemSavedData.this.mapView.render((org.bukkit.craftbukkit.entity.CraftPlayer) this.player.getBukkitEntity()) : MapItemSavedData.this.vanillaRender; // CraftBukkit // Paper
+ 
+             if (this.dirtyData) {
+                 this.dirtyData = false;
+@@ -597,6 +617,8 @@ public class MapItemSavedData extends SavedData {
+                 // CraftBukkit start
+                 java.util.Collection<MapDecoration> icons = new java.util.ArrayList<MapDecoration>();
+ 
++                if (vanillaMaps) addSeenPlayers(icons); // Paper
++
+                 for (org.bukkit.map.MapCursor cursor : render.cursors) {
+                     if (cursor.isVisible()) {
+                         icons.add(new MapDecoration(MapDecoration.Type.byIcon(cursor.getRawType()), cursor.getX(), cursor.getY(), cursor.getDirection(), PaperAdventure.asVanilla(cursor.caption()))); // Paper - Adventure
+diff --git a/src/main/java/org/bukkit/craftbukkit/map/RenderData.java b/src/main/java/org/bukkit/craftbukkit/map/RenderData.java
+index 256a131781721c86dd6cdbc329335964570cbe8c..5768cd512ec166f1e8d1f4a28792015347297c3f 100644
+--- a/src/main/java/org/bukkit/craftbukkit/map/RenderData.java
++++ b/src/main/java/org/bukkit/craftbukkit/map/RenderData.java
+@@ -5,7 +5,7 @@ import org.bukkit.map.MapCursor;
+ 
+ public class RenderData {
+ 
+-    public final byte[] buffer;
++    public byte[] buffer; // Paper
+     public final ArrayList<MapCursor> cursors;
+ 
+     public RenderData() {

patches/unapplied/server/0096-LootTable-API-Replenishable-Lootables-Feature.patch

@@ -0,0 +1,800 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Sun, 1 May 2016 21:19:14 -0400
+Subject: [PATCH] LootTable API & Replenishable Lootables Feature
+
+Provides an API to control the loot table for an object.
+Also provides a feature that any Lootable Inventory (Chests in Structures)
+can automatically replenish after a given time.
+
+This feature is good for long term worlds so that newer players
+do not suffer with "Every chest has been looted"
+
+== AT ==
+public org.bukkit.craftbukkit.block.CraftBlockEntityState getTileEntity()Lnet/minecraft/world/level/block/entity/BlockEntity;
+public org.bukkit.craftbukkit.block.CraftLootable setLootTable(Lorg/bukkit/loot/LootTable;J)V
+public org.bukkit.craftbukkit.entity.CraftMinecartContainer setLootTable(Lorg/bukkit/loot/LootTable;J)V
+
+diff --git a/src/main/java/com/destroystokyo/paper/loottable/PaperContainerEntityLootableInventory.java b/src/main/java/com/destroystokyo/paper/loottable/PaperContainerEntityLootableInventory.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..9ca389ca789dc54bba3542cac0aac2e1dc66c870
+--- /dev/null
++++ b/src/main/java/com/destroystokyo/paper/loottable/PaperContainerEntityLootableInventory.java
+@@ -0,0 +1,63 @@
++package com.destroystokyo.paper.loottable;
++
++import net.minecraft.world.entity.Entity;
++import net.minecraft.world.entity.vehicle.AbstractMinecartContainer;
++import net.minecraft.world.entity.vehicle.ContainerEntity;
++import net.minecraft.world.level.Level;
++import org.bukkit.Bukkit;
++import org.bukkit.craftbukkit.util.CraftNamespacedKey;
++
++public class PaperContainerEntityLootableInventory implements PaperLootableEntityInventory {
++
++    private final ContainerEntity entity;
++
++    public PaperContainerEntityLootableInventory(ContainerEntity entity) {
++        this.entity = entity;
++    }
++
++    @Override
++    public org.bukkit.loot.LootTable getLootTable() {
++        return entity.getLootTable() != null ? Bukkit.getLootTable(CraftNamespacedKey.fromMinecraft(entity.getLootTable())) : null;
++    }
++
++    @Override
++    public void setLootTable(org.bukkit.loot.LootTable table, long seed) {
++        setLootTable(table);
++        setSeed(seed);
++    }
++
++    @Override
++    public void setSeed(long seed) {
++        entity.setLootTableSeed(seed);
++    }
++
++    @Override
++    public long getSeed() {
++        return entity.getLootTableSeed();
++    }
++
++    @Override
++    public void setLootTable(org.bukkit.loot.LootTable table) {
++        entity.setLootTable((table == null) ? null : CraftNamespacedKey.toMinecraft(table.getKey()));
++    }
++
++    @Override
++    public PaperLootableInventoryData getLootableData() {
++        return entity.getLootableData();
++    }
++
++    @Override
++    public Entity getHandle() {
++        return entity.getEntity();
++    }
++
++    @Override
++    public LootableInventory getAPILootableInventory() {
++        return (LootableInventory) entity.getEntity().getBukkitEntity();
++    }
++
++    @Override
++    public Level getNMSWorld() {
++        return entity.level();
++    }
++}
+diff --git a/src/main/java/com/destroystokyo/paper/loottable/PaperLootableBlockInventory.java b/src/main/java/com/destroystokyo/paper/loottable/PaperLootableBlockInventory.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..24c6ff57cd25533e71f8a1d0b3c0ece2fdbbf87e
+--- /dev/null
++++ b/src/main/java/com/destroystokyo/paper/loottable/PaperLootableBlockInventory.java
+@@ -0,0 +1,33 @@
++package com.destroystokyo.paper.loottable;
++
++import net.minecraft.core.BlockPos;
++import net.minecraft.world.level.Level;
++import net.minecraft.world.level.block.entity.RandomizableContainerBlockEntity;
++import org.bukkit.Chunk;
++import org.bukkit.block.Block;
++
++public interface PaperLootableBlockInventory extends LootableBlockInventory, PaperLootableInventory {
++
++    RandomizableContainerBlockEntity getTileEntity();
++
++    @Override
++    default LootableInventory getAPILootableInventory() {
++        return this;
++    }
++
++    @Override
++    default Level getNMSWorld() {
++        return this.getTileEntity().getLevel();
++    }
++
++    default Block getBlock() {
++        final BlockPos position = this.getTileEntity().getBlockPos();
++        final Chunk bukkitChunk = this.getBukkitWorld().getChunkAt(org.bukkit.craftbukkit.block.CraftBlock.at(this.getNMSWorld(), position));
++        return bukkitChunk.getBlock(position.getX(), position.getY(), position.getZ());
++    }
++
++    @Override
++    default PaperLootableInventoryData getLootableData() {
++        return this.getTileEntity().lootableData;
++    }
++}
+diff --git a/src/main/java/com/destroystokyo/paper/loottable/PaperLootableEntityInventory.java b/src/main/java/com/destroystokyo/paper/loottable/PaperLootableEntityInventory.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..2fba5bc0f982e143ad5f5bda55d768edc5f847df
+--- /dev/null
++++ b/src/main/java/com/destroystokyo/paper/loottable/PaperLootableEntityInventory.java
+@@ -0,0 +1,28 @@
++package com.destroystokyo.paper.loottable;
++
++import net.minecraft.world.level.Level;
++import org.bukkit.entity.Entity;
++
++public interface PaperLootableEntityInventory extends LootableEntityInventory, PaperLootableInventory {
++
++    net.minecraft.world.entity.Entity getHandle();
++
++    @Override
++    default LootableInventory getAPILootableInventory() {
++        return this;
++    }
++
++    default Entity getEntity() {
++        return getHandle().getBukkitEntity();
++    }
++
++    @Override
++    default Level getNMSWorld() {
++        return getHandle().getCommandSenderWorld();
++    }
++
++    @Override
++    default PaperLootableInventoryData getLootableData() {
++        return getHandle().lootableData;
++    }
++}
+diff --git a/src/main/java/com/destroystokyo/paper/loottable/PaperLootableInventory.java b/src/main/java/com/destroystokyo/paper/loottable/PaperLootableInventory.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..8e6dac2cef7af26ad74928eff631c1826c2980bb
+--- /dev/null
++++ b/src/main/java/com/destroystokyo/paper/loottable/PaperLootableInventory.java
+@@ -0,0 +1,75 @@
++package com.destroystokyo.paper.loottable;
++
++import org.bukkit.loot.Lootable;
++import java.util.UUID;
++import net.minecraft.world.level.Level;
++
++public interface PaperLootableInventory extends LootableInventory, Lootable {
++
++    PaperLootableInventoryData getLootableData();
++    LootableInventory getAPILootableInventory();
++
++    Level getNMSWorld();
++
++    default org.bukkit.World getBukkitWorld() {
++        return getNMSWorld().getWorld();
++    }
++
++    @Override
++    default boolean isRefillEnabled() {
++        return getNMSWorld().paperConfig().lootables.autoReplenish;
++    }
++
++    @Override
++    default boolean hasBeenFilled() {
++        return getLastFilled() != -1;
++    }
++
++    @Override
++    default boolean hasPlayerLooted(UUID player) {
++        return getLootableData().hasPlayerLooted(player);
++    }
++
++    @Override
++    default boolean canPlayerLoot(final UUID player) {
++        return getLootableData().canPlayerLoot(player, this.getNMSWorld().paperConfig());
++    }
++
++    @Override
++    default Long getLastLooted(UUID player) {
++        return getLootableData().getLastLooted(player);
++    }
++
++    @Override
++    default boolean setHasPlayerLooted(UUID player, boolean looted) {
++        final boolean hasLooted = hasPlayerLooted(player);
++        if (hasLooted != looted) {
++            getLootableData().setPlayerLootedState(player, looted);
++        }
++        return hasLooted;
++    }
++
++    @Override
++    default boolean hasPendingRefill() {
++        long nextRefill = getLootableData().getNextRefill();
++        return nextRefill != -1 && nextRefill > getLootableData().getLastFill();
++    }
++
++    @Override
++    default long getLastFilled() {
++        return getLootableData().getLastFill();
++    }
++
++    @Override
++    default long getNextRefill() {
++        return getLootableData().getNextRefill();
++    }
++
++    @Override
++    default long setNextRefill(long refillAt) {
++        if (refillAt < -1) {
++            refillAt = -1;
++        }
++        return getLootableData().setNextRefill(refillAt);
++    }
++}
+diff --git a/src/main/java/com/destroystokyo/paper/loottable/PaperLootableInventoryData.java b/src/main/java/com/destroystokyo/paper/loottable/PaperLootableInventoryData.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..5408cbc21fc7577a6100b5a1ca0463e899d2df8b
+--- /dev/null
++++ b/src/main/java/com/destroystokyo/paper/loottable/PaperLootableInventoryData.java
+@@ -0,0 +1,188 @@
++package com.destroystokyo.paper.loottable;
++
++import io.papermc.paper.configuration.WorldConfiguration;
++import io.papermc.paper.configuration.type.DurationOrDisabled;
++import java.time.temporal.ChronoUnit;
++import java.util.concurrent.TimeUnit;
++import org.bukkit.entity.Player;
++import org.bukkit.loot.LootTable;
++import javax.annotation.Nullable;
++import net.minecraft.nbt.CompoundTag;
++import net.minecraft.nbt.ListTag;
++import java.util.HashMap;
++import java.util.Map;
++import java.util.Random;
++import java.util.UUID;
++
++public class PaperLootableInventoryData {
++
++    private static final Random RANDOM = new Random();
++
++    private long lastFill = -1;
++    private long nextRefill = -1;
++    private int numRefills = 0;
++    private Map<UUID, Long> lootedPlayers;
++    private final PaperLootableInventory lootable;
++
++    public PaperLootableInventoryData(PaperLootableInventory lootable) {
++        this.lootable = lootable;
++    }
++
++    long getLastFill() {
++        return this.lastFill;
++    }
++
++    long getNextRefill() {
++        return this.nextRefill;
++    }
++
++    long setNextRefill(long nextRefill) {
++        long prev = this.nextRefill;
++        this.nextRefill = nextRefill;
++        return prev;
++    }
++
++    public boolean shouldReplenish(@Nullable net.minecraft.world.entity.player.Player player) {
++        LootTable table = this.lootable.getLootTable();
++
++        // No Loot Table associated
++        if (table == null) {
++            return false;
++        }
++
++        // ALWAYS process the first fill or if the feature is disabled
++        if (this.lastFill == -1 || !this.lootable.getNMSWorld().paperConfig().lootables.autoReplenish) {
++            return true;
++        }
++
++        // Only process refills when a player is set
++        if (player == null) {
++            return false;
++        }
++
++        // Chest is not scheduled for refill
++        if (this.nextRefill == -1) {
++            return false;
++        }
++
++        final WorldConfiguration paperConfig = this.lootable.getNMSWorld().paperConfig();
++
++        // Check if max refills has been hit
++        if (paperConfig.lootables.maxRefills != -1 && this.numRefills >= paperConfig.lootables.maxRefills) {
++            return false;
++        }
++
++        // Refill has not been reached
++        if (this.nextRefill > System.currentTimeMillis()) {
++            return false;
++        }
++
++
++        final Player bukkitPlayer = (Player) player.getBukkitEntity();
++        LootableInventoryReplenishEvent event = new LootableInventoryReplenishEvent(bukkitPlayer, lootable.getAPILootableInventory());
++        event.setCancelled(!canPlayerLoot(player.getUUID(), paperConfig));
++        return event.callEvent();
++    }
++    public void processRefill(@Nullable net.minecraft.world.entity.player.Player player) {
++        this.lastFill = System.currentTimeMillis();
++        final WorldConfiguration paperConfig = this.lootable.getNMSWorld().paperConfig();
++        if (paperConfig.lootables.autoReplenish) {
++            long min = paperConfig.lootables.refreshMin.seconds();
++            long max = paperConfig.lootables.refreshMax.seconds();
++            this.nextRefill = this.lastFill + (min + RANDOM.nextLong(max - min + 1)) * 1000L;
++            this.numRefills++;
++            if (paperConfig.lootables.resetSeedOnFill) {
++                this.lootable.setSeed(0);
++            }
++            if (player != null) { // This means that numRefills can be incremented without a player being in the lootedPlayers list - Seems to be EntityMinecartChest specific
++                this.setPlayerLootedState(player.getUUID(), true);
++            }
++        } else {
++            this.lootable.clearLootTable();
++        }
++    }
++
++
++    public void loadNbt(CompoundTag base) {
++        if (!base.contains("Paper.LootableData", 10)) { // 10 = compound
++            return;
++        }
++        CompoundTag comp = base.getCompound("Paper.LootableData");
++        if (comp.contains("lastFill")) {
++            this.lastFill = comp.getLong("lastFill");
++        }
++        if (comp.contains("nextRefill")) {
++            this.nextRefill = comp.getLong("nextRefill");
++        }
++
++        if (comp.contains("numRefills")) {
++            this.numRefills = comp.getInt("numRefills");
++        }
++        if (comp.contains("lootedPlayers", 9)) { // 9 = list
++            ListTag list = comp.getList("lootedPlayers", 10); // 10 = compound
++            final int size = list.size();
++            if (size > 0) {
++                this.lootedPlayers = new HashMap<>(list.size());
++            }
++            for (int i = 0; i < size; i++) {
++                final CompoundTag cmp = list.getCompound(i);
++                lootedPlayers.put(cmp.getUUID("UUID"), cmp.getLong("Time"));
++            }
++        }
++    }
++    public void saveNbt(CompoundTag base) {
++        CompoundTag comp = new CompoundTag();
++        if (this.nextRefill != -1) {
++            comp.putLong("nextRefill", this.nextRefill);
++        }
++        if (this.lastFill != -1) {
++            comp.putLong("lastFill", this.lastFill);
++        }
++        if (this.numRefills != 0) {
++            comp.putInt("numRefills", this.numRefills);
++        }
++        if (this.lootedPlayers != null && !this.lootedPlayers.isEmpty()) {
++            ListTag list = new ListTag();
++            for (Map.Entry<UUID, Long> entry : this.lootedPlayers.entrySet()) {
++                CompoundTag cmp = new CompoundTag();
++                cmp.putUUID("UUID", entry.getKey());
++                cmp.putLong("Time", entry.getValue());
++                list.add(cmp);
++            }
++            comp.put("lootedPlayers", list);
++        }
++
++        if (!comp.isEmpty()) {
++            base.put("Paper.LootableData", comp);
++        }
++    }
++
++    void setPlayerLootedState(UUID player, boolean looted) {
++        if (looted && this.lootedPlayers == null) {
++            this.lootedPlayers = new HashMap<>();
++        }
++        if (looted) {
++            this.lootedPlayers.put(player, System.currentTimeMillis());
++        } else if (this.lootedPlayers != null) {
++            this.lootedPlayers.remove(player);
++        }
++    }
++
++    boolean canPlayerLoot(final UUID player, final WorldConfiguration worldConfiguration) {
++        final Long lastLooted = getLastLooted(player);
++        if (!worldConfiguration.lootables.restrictPlayerReloot || lastLooted == null) return true;
++
++        final DurationOrDisabled restrictPlayerRelootTime = worldConfiguration.lootables.restrictPlayerRelootTime;
++        if (restrictPlayerRelootTime.value().isEmpty()) return false;
++
++        return TimeUnit.SECONDS.toMillis(restrictPlayerRelootTime.value().get().seconds()) + lastLooted < System.currentTimeMillis();
++    }
++
++    boolean hasPlayerLooted(UUID player) {
++        return this.lootedPlayers != null && this.lootedPlayers.containsKey(player);
++    }
++
++    Long getLastLooted(UUID player) {
++        return lootedPlayers != null ? lootedPlayers.get(player) : null;
++    }
++}
+diff --git a/src/main/java/com/destroystokyo/paper/loottable/PaperTileEntityLootableInventory.java b/src/main/java/com/destroystokyo/paper/loottable/PaperTileEntityLootableInventory.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..9cfa5d36a6991067a3866e0d437749fafcc0158e
+--- /dev/null
++++ b/src/main/java/com/destroystokyo/paper/loottable/PaperTileEntityLootableInventory.java
+@@ -0,0 +1,65 @@
++package com.destroystokyo.paper.loottable;
++
++import io.papermc.paper.util.MCUtil;
++import net.minecraft.world.level.Level;
++import net.minecraft.world.level.block.entity.RandomizableContainerBlockEntity;
++import org.bukkit.Bukkit;
++import org.bukkit.craftbukkit.util.CraftNamespacedKey;
++
++public class PaperTileEntityLootableInventory implements PaperLootableBlockInventory {
++    private RandomizableContainerBlockEntity tileEntityLootable;
++
++    public PaperTileEntityLootableInventory(RandomizableContainerBlockEntity tileEntityLootable) {
++        this.tileEntityLootable = tileEntityLootable;
++    }
++
++    @Override
++    public org.bukkit.loot.LootTable getLootTable() {
++        return tileEntityLootable.lootTable != null ? Bukkit.getLootTable(CraftNamespacedKey.fromMinecraft(tileEntityLootable.lootTable)) : null;
++    }
++
++    @Override
++    public void setLootTable(org.bukkit.loot.LootTable table, long seed) {
++        setLootTable(table);
++        setSeed(seed);
++    }
++
++    @Override
++    public void setLootTable(org.bukkit.loot.LootTable table) {
++        tileEntityLootable.lootTable = (table == null) ? null : CraftNamespacedKey.toMinecraft(table.getKey());
++    }
++
++    @Override
++    public void setSeed(long seed) {
++        tileEntityLootable.lootTableSeed = seed;
++    }
++
++    @Override
++    public long getSeed() {
++        return tileEntityLootable.lootTableSeed;
++    }
++
++    @Override
++    public PaperLootableInventoryData getLootableData() {
++        return tileEntityLootable.lootableData;
++    }
++
++    @Override
++    public RandomizableContainerBlockEntity getTileEntity() {
++        return tileEntityLootable;
++    }
++
++    @Override
++    public LootableInventory getAPILootableInventory() {
++        Level world = tileEntityLootable.getLevel();
++        if (world == null) {
++            return null;
++        }
++        return (LootableInventory) getBukkitWorld().getBlockAt(MCUtil.toLocation(world, tileEntityLootable.getBlockPos())).getState();
++    }
++
++    @Override
++    public Level getNMSWorld() {
++        return tileEntityLootable.getLevel();
++    }
++}
+diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
+index 2f15c9df59ebfbe7619e190b8d6ef1fe122809f8..069fe5df02806103c9bbef396c2e39ca3be90101 100644
+--- a/src/main/java/net/minecraft/world/entity/Entity.java
++++ b/src/main/java/net/minecraft/world/entity/Entity.java
+@@ -235,6 +235,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+     }
+     // Paper end
+ 
++    public com.destroystokyo.paper.loottable.PaperLootableInventoryData lootableData; // Paper
+     private CraftEntity bukkitEntity;
+ 
+     public CraftEntity getBukkitEntity() {
+diff --git a/src/main/java/net/minecraft/world/entity/vehicle/AbstractMinecartContainer.java b/src/main/java/net/minecraft/world/entity/vehicle/AbstractMinecartContainer.java
+index 0ec2db500e4a0230a91286a709b8d444d1b529f4..272095d7a09ab41227d741172735f66fd2798ce1 100644
+--- a/src/main/java/net/minecraft/world/entity/vehicle/AbstractMinecartContainer.java
++++ b/src/main/java/net/minecraft/world/entity/vehicle/AbstractMinecartContainer.java
+@@ -32,6 +32,20 @@ public abstract class AbstractMinecartContainer extends AbstractMinecart impleme
+     public ResourceLocation lootTable;
+     public long lootTableSeed;
+ 
++    // Paper start
++    {
++        this.lootableData = new com.destroystokyo.paper.loottable.PaperLootableInventoryData(new com.destroystokyo.paper.loottable.PaperContainerEntityLootableInventory(this));
++    }
++    @Override
++    public Entity getEntity() {
++        return this;
++    }
++
++    @Override
++    public com.destroystokyo.paper.loottable.PaperLootableInventoryData getLootableData() {
++        return this.lootableData;
++    }
++    // Paper end
+     // CraftBukkit start
+     public List<HumanEntity> transaction = new java.util.ArrayList<HumanEntity>();
+     private int maxStack = MAX_STACK;
+@@ -134,12 +148,14 @@ public abstract class AbstractMinecartContainer extends AbstractMinecart impleme
+     @Override
+     protected void addAdditionalSaveData(CompoundTag nbt) {
+         super.addAdditionalSaveData(nbt);
++        this.lootableData.saveNbt(nbt); // Paper
+         this.addChestVehicleSaveData(nbt);
+     }
+ 
+     @Override
+     protected void readAdditionalSaveData(CompoundTag nbt) {
+         super.readAdditionalSaveData(nbt);
++        this.lootableData.loadNbt(nbt); // Paper
+         this.readChestVehicleSaveData(nbt);
+     }
+ 
+diff --git a/src/main/java/net/minecraft/world/entity/vehicle/ChestBoat.java b/src/main/java/net/minecraft/world/entity/vehicle/ChestBoat.java
+index d88a6501917306eab57f46cb0d10dc03164a94da..e88c39d405fc7068db64ad34a03dec8d559e749e 100644
+--- a/src/main/java/net/minecraft/world/entity/vehicle/ChestBoat.java
++++ b/src/main/java/net/minecraft/world/entity/vehicle/ChestBoat.java
+@@ -65,12 +65,14 @@ public class ChestBoat extends Boat implements HasCustomInventoryScreen, Contain
+     @Override
+     protected void addAdditionalSaveData(CompoundTag nbt) {
+         super.addAdditionalSaveData(nbt);
++        this.lootableData.saveNbt(nbt); // Paper
+         this.addChestVehicleSaveData(nbt);
+     }
+ 
+     @Override
+     protected void readAdditionalSaveData(CompoundTag nbt) {
+         super.readAdditionalSaveData(nbt);
++        this.lootableData.loadNbt(nbt); // Paper
+         this.readChestVehicleSaveData(nbt);
+     }
+ 
+@@ -245,6 +247,20 @@ public class ChestBoat extends Boat implements HasCustomInventoryScreen, Contain
+         this.level().gameEvent(GameEvent.CONTAINER_CLOSE, this.position(), GameEvent.Context.of((Entity) player));
+     }
+ 
++    // Paper start
++    {
++        this.lootableData = new com.destroystokyo.paper.loottable.PaperLootableInventoryData(new com.destroystokyo.paper.loottable.PaperContainerEntityLootableInventory(this));
++    }
++    @Override
++    public Entity getEntity() {
++        return this;
++    }
++
++    @Override
++    public com.destroystokyo.paper.loottable.PaperLootableInventoryData getLootableData() {
++        return this.lootableData;
++    }
++    // Paper end
+     // CraftBukkit start
+     public List<HumanEntity> transaction = new java.util.ArrayList<HumanEntity>();
+     private int maxStack = MAX_STACK;
+diff --git a/src/main/java/net/minecraft/world/entity/vehicle/ContainerEntity.java b/src/main/java/net/minecraft/world/entity/vehicle/ContainerEntity.java
+index e0fbacd574e0c83c2e1d164ded8e9ccf4af30480..7529751afa2932fd16bc4591189b0358268a7b14 100644
+--- a/src/main/java/net/minecraft/world/entity/vehicle/ContainerEntity.java
++++ b/src/main/java/net/minecraft/world/entity/vehicle/ContainerEntity.java
+@@ -59,10 +59,9 @@ public interface ContainerEntity extends Container, MenuProvider {
+             if (this.getLootTableSeed() != 0L) {
+                 nbt.putLong("LootTableSeed", this.getLootTableSeed());
+             }
+-        } else {
+-            ContainerHelper.saveAllItems(nbt, this.getItemStacks());
+         }
+ 
++        ContainerHelper.saveAllItems(nbt, this.getItemStacks()); // Paper - always save the items, table may still remain
+     }
+ 
+     default void readChestVehicleSaveData(CompoundTag nbt) {
+@@ -70,10 +69,9 @@ public interface ContainerEntity extends Container, MenuProvider {
+         if (nbt.contains("LootTable", 8)) {
+             this.setLootTable(new ResourceLocation(nbt.getString("LootTable")));
+             this.setLootTableSeed(nbt.getLong("LootTableSeed"));
+-        } else {
+-            ContainerHelper.loadAllItems(nbt, this.getItemStacks());
+         }
+ 
++        ContainerHelper.loadAllItems(nbt, this.getItemStacks()); // Paper - always load the items, table may still remain
+     }
+ 
+     default void chestVehicleDestroyed(DamageSource source, Level world, Entity vehicle) {
+@@ -96,13 +94,13 @@ public interface ContainerEntity extends Container, MenuProvider {
+ 
+     default void unpackChestVehicleLootTable(@Nullable Player player) {
+         MinecraftServer minecraftServer = this.level().getServer();
+-        if (this.getLootTable() != null && minecraftServer != null) {
++        if (this.getLootableData().shouldReplenish(player) && minecraftServer != null) { // Paper
+             LootTable lootTable = minecraftServer.getLootData().getLootTable(this.getLootTable());
+             if (player != null) {
+                 CriteriaTriggers.GENERATE_LOOT.trigger((ServerPlayer)player, this.getLootTable());
+             }
+ 
+-            this.setLootTable((ResourceLocation)null);
++            this.getLootableData().processRefill(player); // Paper
+             LootParams.Builder builder = (new LootParams.Builder((ServerLevel)this.level())).withParameter(LootContextParams.ORIGIN, this.position());
+             if (player != null) {
+                 builder.withLuck(player.getLuck()).withParameter(LootContextParams.THIS_ENTITY, player);
+@@ -176,4 +174,13 @@ public interface ContainerEntity extends Container, MenuProvider {
+     default boolean isChestVehicleStillValid(Player player) {
+         return !this.isRemoved() && this.position().closerThan(player.position(), 8.0D);
+     }
++    // Paper start
++    default Entity getEntity() {
++        throw new UnsupportedOperationException();
++    }
++
++    default com.destroystokyo.paper.loottable.PaperLootableInventoryData getLootableData() {
++        throw new UnsupportedOperationException();
++    }
++    // Paper end
+ }
+diff --git a/src/main/java/net/minecraft/world/level/block/entity/RandomizableContainerBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/RandomizableContainerBlockEntity.java
+index 111494c30a2b7d8464237a92cf5c98f7f4cca19d..e11618247ad889fa8fadbb2c7addd0de94caf249 100644
+--- a/src/main/java/net/minecraft/world/level/block/entity/RandomizableContainerBlockEntity.java
++++ b/src/main/java/net/minecraft/world/level/block/entity/RandomizableContainerBlockEntity.java
+@@ -29,6 +29,7 @@ public abstract class RandomizableContainerBlockEntity extends BaseContainerBloc
+     @Nullable
+     public ResourceLocation lootTable;
+     public long lootTableSeed;
++    public final com.destroystokyo.paper.loottable.PaperLootableInventoryData lootableData = new com.destroystokyo.paper.loottable.PaperLootableInventoryData(new com.destroystokyo.paper.loottable.PaperTileEntityLootableInventory(this)); // Paper
+ 
+     protected RandomizableContainerBlockEntity(BlockEntityType<?> type, BlockPos pos, BlockState state) {
+         super(type, pos, state);
+@@ -43,16 +44,19 @@ public abstract class RandomizableContainerBlockEntity extends BaseContainerBloc
+     }
+ 
+     protected boolean tryLoadLootTable(CompoundTag nbt) {
++        this.lootableData.loadNbt(nbt); // Paper
+         if (nbt.contains("LootTable", 8)) {
+             this.lootTable = new ResourceLocation(nbt.getString("LootTable"));
++            try { org.bukkit.craftbukkit.util.CraftNamespacedKey.fromMinecraft(this.lootTable); } catch (IllegalArgumentException ex) { this.lootTable = null; } // Paper - validate
+             this.lootTableSeed = nbt.getLong("LootTableSeed");
+-            return true;
++            return false; // Paper - always load the items, table may still remain
+         } else {
+             return false;
+         }
+     }
+ 
+     protected boolean trySaveLootTable(CompoundTag nbt) {
++        this.lootableData.saveNbt(nbt); // Paper
+         if (this.lootTable == null) {
+             return false;
+         } else {
+@@ -61,18 +65,18 @@ public abstract class RandomizableContainerBlockEntity extends BaseContainerBloc
+                 nbt.putLong("LootTableSeed", this.lootTableSeed);
+             }
+ 
+-            return true;
++            return false; // Paper - always save the items, table may still remain
+         }
+     }
+ 
+     public void unpackLootTable(@Nullable Player player) {
+-        if (this.lootTable != null && this.level.getServer() != null) {
++        if (this.lootableData.shouldReplenish(player) && this.level.getServer() != null) { // Paper
+             LootTable lootTable = this.level.getServer().getLootData().getLootTable(this.lootTable);
+             if (player instanceof ServerPlayer) {
+                 CriteriaTriggers.GENERATE_LOOT.trigger((ServerPlayer)player, this.lootTable);
+             }
+ 
+-            this.lootTable = null;
++            this.lootableData.processRefill(player); // Paper
+             LootParams.Builder builder = (new LootParams.Builder((ServerLevel)this.level)).withParameter(LootContextParams.ORIGIN, Vec3.atCenterOf(this.worldPosition));
+             if (player != null) {
+                 builder.withLuck(player.getLuck()).withParameter(LootContextParams.THIS_ENTITY, player);
+diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftBrushableBlock.java b/src/main/java/org/bukkit/craftbukkit/block/CraftBrushableBlock.java
+index d5bfa06a90158fb6d9cc54f7a9b44a277f2c480f..dbdf9b009a488767bb63b0867943fd932fac16e4 100644
+--- a/src/main/java/org/bukkit/craftbukkit/block/CraftBrushableBlock.java
++++ b/src/main/java/org/bukkit/craftbukkit/block/CraftBrushableBlock.java
+@@ -60,7 +60,7 @@ public class CraftBrushableBlock extends CraftBlockEntityState<BrushableBlockEnt
+         this.setLootTable(this.getLootTable(), seed);
+     }
+ 
+-    private void setLootTable(LootTable table, long seed) {
++    public void setLootTable(LootTable table, long seed) { // Paper - make public since it overrides a public method
+         ResourceLocation key = (table == null) ? null : CraftNamespacedKey.toMinecraft(table.getKey());
+         getSnapshot().setLootTable(key, seed);
+     }
+diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftChest.java b/src/main/java/org/bukkit/craftbukkit/block/CraftChest.java
+index b31fa63019822bc172d85427b3f3f2c154d7e179..82b3f3b3aced73ce136b6b94fe212972ac6090ef 100644
+--- a/src/main/java/org/bukkit/craftbukkit/block/CraftChest.java
++++ b/src/main/java/org/bukkit/craftbukkit/block/CraftChest.java
+@@ -12,8 +12,9 @@ import org.bukkit.craftbukkit.CraftWorld;
+ import org.bukkit.craftbukkit.inventory.CraftInventory;
+ import org.bukkit.craftbukkit.inventory.CraftInventoryDoubleChest;
+ import org.bukkit.inventory.Inventory;
++import com.destroystokyo.paper.loottable.PaperLootableBlockInventory; // Paper
+ 
+-public class CraftChest extends CraftLootable<ChestBlockEntity> implements Chest {
++public class CraftChest extends CraftLootable<ChestBlockEntity> implements Chest, PaperLootableBlockInventory { // Paper
+ 
+     public CraftChest(World world, ChestBlockEntity tileEntity) {
+         super(world, tileEntity);
+diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftLootable.java b/src/main/java/org/bukkit/craftbukkit/block/CraftLootable.java
+index 982adacb361b0590799dc68f9b7c13c7195627fd..e49eece9bff3a53469673d03a7bbf8f9cf8776b8 100644
+--- a/src/main/java/org/bukkit/craftbukkit/block/CraftLootable.java
++++ b/src/main/java/org/bukkit/craftbukkit/block/CraftLootable.java
+@@ -9,7 +9,7 @@ import org.bukkit.craftbukkit.util.CraftNamespacedKey;
+ import org.bukkit.loot.LootTable;
+ import org.bukkit.loot.Lootable;
+ 
+-public abstract class CraftLootable<T extends RandomizableContainerBlockEntity> extends CraftContainer<T> implements Nameable, Lootable {
++public abstract class CraftLootable<T extends RandomizableContainerBlockEntity> extends CraftContainer<T> implements Nameable, Lootable, com.destroystokyo.paper.loottable.PaperLootableBlockInventory { // Paper
+ 
+     public CraftLootable(World world, T tileEntity) {
+         super(world, tileEntity);
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftChestBoat.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftChestBoat.java
+index 9ba61f791c0ca9b283c0f1f30f12600c4e49a4cb..c332e8504b96a4437325b5a64430c97c5afb6b4b 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftChestBoat.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftChestBoat.java
+@@ -10,8 +10,7 @@ import org.bukkit.craftbukkit.util.CraftNamespacedKey;
+ import org.bukkit.inventory.Inventory;
+ import org.bukkit.loot.LootTable;
+ 
+-public class CraftChestBoat extends CraftBoat implements org.bukkit.entity.ChestBoat {
+-
++public class CraftChestBoat extends CraftBoat implements org.bukkit.entity.ChestBoat, com.destroystokyo.paper.loottable.PaperLootableEntityInventory { // Paper
+     private final Inventory inventory;
+ 
+     public CraftChestBoat(CraftServer server, ChestBoat entity) {
+@@ -60,7 +59,7 @@ public class CraftChestBoat extends CraftBoat implements org.bukkit.entity.Chest
+         return this.getHandle().getLootTableSeed();
+     }
+ 
+-    private void setLootTable(LootTable table, long seed) {
++    public void setLootTable(LootTable table, long seed) { // Paper - change visibility since it overrides a public method
+         ResourceLocation newKey = (table == null) ? null : CraftNamespacedKey.toMinecraft(table.getKey());
+         this.getHandle().setLootTable(newKey);
+         this.getHandle().setLootTableSeed(seed);
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftMinecartChest.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftMinecartChest.java
+index fd42f0b20132d08039ca7735d31a61806a6b07dc..b1a708de6790bbe336202b13ab862ced78de084f 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftMinecartChest.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftMinecartChest.java
+@@ -7,7 +7,7 @@ import org.bukkit.entity.minecart.StorageMinecart;
+ import org.bukkit.inventory.Inventory;
+ 
+ @SuppressWarnings("deprecation")
+-public class CraftMinecartChest extends CraftMinecartContainer implements StorageMinecart {
++public class CraftMinecartChest extends CraftMinecartContainer implements StorageMinecart, com.destroystokyo.paper.loottable.PaperLootableEntityInventory { // Paper
+     private final CraftInventory inventory;
+ 
+     public CraftMinecartChest(CraftServer server, MinecartChest entity) {
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftMinecartHopper.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftMinecartHopper.java
+index ec3ab12442b7371e16059b902f71e573f0bc9816..3ba7e8ef1035e1de2c195b6919fe57aee398af51 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftMinecartHopper.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftMinecartHopper.java
+@@ -6,7 +6,7 @@ import org.bukkit.craftbukkit.inventory.CraftInventory;
+ import org.bukkit.entity.minecart.HopperMinecart;
+ import org.bukkit.inventory.Inventory;
+ 
+-public final class CraftMinecartHopper extends CraftMinecartContainer implements HopperMinecart {
++public final class CraftMinecartHopper extends CraftMinecartContainer implements HopperMinecart, com.destroystokyo.paper.loottable.PaperLootableEntityInventory { // Paper
+     private final CraftInventory inventory;
+ 
+     public CraftMinecartHopper(CraftServer server, MinecartHopper entity) {

patches/unapplied/server/0097-Don-t-save-empty-scoreboard-teams-to-scoreboard.dat.patch

@@ -0,0 +1,18 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Sat, 7 May 2016 23:33:08 -0400
+Subject: [PATCH] Don't save empty scoreboard teams to scoreboard.dat
+
+
+diff --git a/src/main/java/net/minecraft/world/scores/ScoreboardSaveData.java b/src/main/java/net/minecraft/world/scores/ScoreboardSaveData.java
+index b837b6616a2384b253cca8ed62c9488b639f6298..2be7a697f08045b974579e6942b38571e744efac 100644
+--- a/src/main/java/net/minecraft/world/scores/ScoreboardSaveData.java
++++ b/src/main/java/net/minecraft/world/scores/ScoreboardSaveData.java
+@@ -136,6 +136,7 @@ public class ScoreboardSaveData extends SavedData {
+         ListTag listTag = new ListTag();
+ 
+         for(PlayerTeam playerTeam : this.scoreboard.getPlayerTeams()) {
++            if (!io.papermc.paper.configuration.GlobalConfiguration.get().scoreboards.saveEmptyScoreboardTeams && playerTeam.getPlayers().isEmpty()) continue; // Paper
+             CompoundTag compoundTag = new CompoundTag();
+             compoundTag.putString("Name", playerTeam.getName());
+             compoundTag.putString("DisplayName", Component.Serializer.toJson(playerTeam.getDisplayName()));

patches/unapplied/server/0098-System-property-for-disabling-watchdoge.patch

@@ -0,0 +1,19 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Zach Brown <zach.brown@destroystokyo.com>
+Date: Thu, 12 May 2016 23:02:58 -0500
+Subject: [PATCH] System property for disabling watchdoge
+
+
+diff --git a/src/main/java/org/spigotmc/WatchdogThread.java b/src/main/java/org/spigotmc/WatchdogThread.java
+index 3ad14bf0697e682a2e777baa8faeb323d127fb13..a9897c494b3dc56d900356d74030359832febbaa 100644
+--- a/src/main/java/org/spigotmc/WatchdogThread.java
++++ b/src/main/java/org/spigotmc/WatchdogThread.java
+@@ -61,7 +61,7 @@ public final class WatchdogThread extends io.papermc.paper.util.TickThread // Pa
+         while ( !this.stopping )
+         {
+             //
+-            if ( this.lastTick != 0 && this.timeoutTime > 0 && WatchdogThread.monotonicMillis() > this.lastTick + this.timeoutTime )
++            if ( this.lastTick != 0 && this.timeoutTime > 0 && WatchdogThread.monotonicMillis() > this.lastTick + this.timeoutTime && !Boolean.getBoolean("disable.watchdog")) // Paper - Add property to disable
+             {
+                 Logger log = Bukkit.getServer().getLogger();
+                 log.log( Level.SEVERE, "------------------------------" );

patches/unapplied/server/0099-Async-GameProfileCache-saving.patch

@@ -0,0 +1,86 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Mon, 16 May 2016 20:47:41 -0400
+Subject: [PATCH] Async GameProfileCache saving
+
+
+diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
+index 0ee486f807d7c44e2252c4c744e29b506d916d9c..b5ededfb23980abca01ef25207cca95ad390a70d 100644
+--- a/src/main/java/net/minecraft/server/MinecraftServer.java
++++ b/src/main/java/net/minecraft/server/MinecraftServer.java
+@@ -932,7 +932,7 @@ public abstract class MinecraftServer extends ReentrantBlockableEventLoop<TickTa
+         } catch (java.lang.InterruptedException ignored) {} // Paper
+         if (org.spigotmc.SpigotConfig.saveUserCacheOnStopOnly) {
+             MinecraftServer.LOGGER.info("Saving usercache.json");
+-            this.getProfileCache().save();
++            this.getProfileCache().save(false); // Paper
+         }
+         // Spigot end
+         io.papermc.paper.chunk.system.io.RegionFileIOThread.close(true); // Paper // Paper - rewrite chunk system
+diff --git a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
+index 6f543665b5ed42eaec6a410fa11f5a38da707110..52c2333afdb3748ffdbcc58ae7629aa2c4b49b74 100644
+--- a/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
++++ b/src/main/java/net/minecraft/server/dedicated/DedicatedServer.java
+@@ -242,7 +242,7 @@ public class DedicatedServer extends MinecraftServer implements ServerInterface
+         }
+ 
+         if (this.convertOldUsers()) {
+-            this.getProfileCache().save();
++            this.getProfileCache().save(false); // Paper
+         }
+ 
+         if (!OldUsersConverter.serverReadyAfterUserconversion(this)) {
+diff --git a/src/main/java/net/minecraft/server/players/GameProfileCache.java b/src/main/java/net/minecraft/server/players/GameProfileCache.java
+index d246563021c32127e570809f4d849b6a156f4dc6..225e15d686675e21969c4210fa38fef58d920355 100644
+--- a/src/main/java/net/minecraft/server/players/GameProfileCache.java
++++ b/src/main/java/net/minecraft/server/players/GameProfileCache.java
+@@ -127,7 +127,7 @@ public class GameProfileCache {
+         GameProfileCache.GameProfileInfo usercache_usercacheentry = new GameProfileCache.GameProfileInfo(profile, date);
+ 
+         this.safeAdd(usercache_usercacheentry);
+-        if( !org.spigotmc.SpigotConfig.saveUserCacheOnStopOnly ) this.save(); // Spigot - skip saving if disabled
++        if( !org.spigotmc.SpigotConfig.saveUserCacheOnStopOnly ) this.save(true); // Spigot - skip saving if disabled // Paper - async
+     }
+ 
+     private long getNextOperation() {
+@@ -160,7 +160,7 @@ public class GameProfileCache {
+         }
+ 
+         if (flag && !org.spigotmc.SpigotConfig.saveUserCacheOnStopOnly) { // Spigot - skip saving if disabled
+-            this.save();
++            this.save(true); // Paper
+         }
+ 
+         return optional;
+@@ -274,7 +274,7 @@ public class GameProfileCache {
+         return arraylist;
+     }
+ 
+-    public void save() {
++    public void save(boolean asyncSave) { // Paper
+         JsonArray jsonarray = new JsonArray();
+         DateFormat dateformat = GameProfileCache.createDateFormat();
+ 
+@@ -282,6 +282,7 @@ public class GameProfileCache {
+             jsonarray.add(GameProfileCache.writeGameProfile(usercache_usercacheentry, dateformat));
+         });
+         String s = this.gson.toJson(jsonarray);
++        Runnable save = () -> { // Paper
+ 
+         try {
+             BufferedWriter bufferedwriter = Files.newWriter(this.file, StandardCharsets.UTF_8);
+@@ -306,6 +307,14 @@ public class GameProfileCache {
+         } catch (IOException ioexception) {
+             ;
+         }
++        // Paper start
++        };
++        if (asyncSave) {
++            io.papermc.paper.util.MCUtil.scheduleAsyncTask(save);
++        } else {
++            save.run();
++        }
++        // Paper end
+ 
+     }
+ 

patches/unapplied/server/0100-Optional-TNT-doesn-t-move-in-water.patch

@@ -0,0 +1,63 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Zach Brown <zach.brown@destroystokyo.com>
+Date: Sun, 22 May 2016 20:20:55 -0500
+Subject: [PATCH] Optional TNT doesn't move in water
+
+
+diff --git a/src/main/java/net/minecraft/server/level/ServerEntity.java b/src/main/java/net/minecraft/server/level/ServerEntity.java
+index c6660cc77dfa3c3750b6b4dde5617f00c9de1e0a..ae3d1077b42fb288938a8a65471f00b3f52cb18f 100644
+--- a/src/main/java/net/minecraft/server/level/ServerEntity.java
++++ b/src/main/java/net/minecraft/server/level/ServerEntity.java
+@@ -70,7 +70,7 @@ public class ServerEntity {
+     @Nullable
+     private List<SynchedEntityData.DataValue<?>> trackedDataValues;
+     // CraftBukkit start
+-    private final Set<ServerPlayerConnection> trackedPlayers;
++    final Set<ServerPlayerConnection> trackedPlayers; // Paper - private -> package
+ 
+     public ServerEntity(ServerLevel worldserver, Entity entity, int i, boolean flag, Consumer<Packet<?>> consumer, Set<ServerPlayerConnection> trackedPlayers) {
+         this.trackedPlayers = trackedPlayers;
+diff --git a/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java b/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java
+index 89fd5d6b373d2705dccc2f22663048f4c2aaa60f..57f9bf73ee14bc8811d0192543caf2b02e890ee0 100644
+--- a/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java
++++ b/src/main/java/net/minecraft/world/entity/item/PrimedTnt.java
+@@ -98,6 +98,27 @@ public class PrimedTnt extends Entity implements TraceableEntity {
+             }
+         }
+ 
++        // Paper start - Optional prevent TNT from moving in water
++        if (!this.isRemoved() && this.wasTouchingWater && this.level().paperConfig().fixes.preventTntFromMovingInWater) {
++            /*
++             * Author: Jedediah Smith <jedediah@silencegreys.com>
++             */
++            // Send position and velocity updates to nearby players on every tick while the TNT is in water.
++            // This does pretty well at keeping their clients in sync with the server.
++            net.minecraft.server.level.ChunkMap.TrackedEntity ete = ((net.minecraft.server.level.ServerLevel)this.level()).getChunkSource().chunkMap.entityMap.get(this.getId());
++            if (ete != null) {
++                net.minecraft.network.protocol.game.ClientboundSetEntityMotionPacket velocityPacket = new net.minecraft.network.protocol.game.ClientboundSetEntityMotionPacket(this);
++                net.minecraft.network.protocol.game.ClientboundTeleportEntityPacket positionPacket = new net.minecraft.network.protocol.game.ClientboundTeleportEntityPacket(this);
++
++                ete.seenBy.stream()
++                    .filter(viewer -> (viewer.getPlayer().getX() - this.getX()) * (viewer.getPlayer().getY() - this.getY()) * (viewer.getPlayer().getZ() - this.getZ()) < 16 * 16)
++                    .forEach(viewer -> {
++                        viewer.send(velocityPacket);
++                        viewer.send(positionPacket);
++                    });
++            }
++        }
++        // Paper end
+     }
+ 
+     private void explode() {
+@@ -147,4 +168,11 @@ public class PrimedTnt extends Entity implements TraceableEntity {
+     public int getFuse() {
+         return (Integer) this.entityData.get(PrimedTnt.DATA_FUSE_ID);
+     }
++
++    // Paper start - Optional prevent TNT from moving in water
++    @Override
++    public boolean isPushedByFluid() {
++        return !level().paperConfig().fixes.preventTntFromMovingInWater && super.isPushedByFluid();
++    }
++    // Paper end
+ }

patches/unapplied/server/0101-Faster-redstone-torch-rapid-clock-removal.patch

@@ -0,0 +1,81 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Martin Panzer <postremus1996@googlemail.com>
+Date: Mon, 23 May 2016 12:12:37 +0200
+Subject: [PATCH] Faster redstone torch rapid clock removal
+
+Only resize the the redstone torch list once, since resizing arrays / lists is costly
+
+diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
+index ba7760b0b478c6f24dcbaa64919a4766e107a720..0c6384c6332babf8e517503c2e9b21a9d6e2ed88 100644
+--- a/src/main/java/net/minecraft/world/level/Level.java
++++ b/src/main/java/net/minecraft/world/level/Level.java
+@@ -173,6 +173,7 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
+     private org.spigotmc.TickLimiter tileLimiter;
+     private int tileTickPosition;
+     public final Map<Explosion.CacheKey, Float> explosionDensityCache = new HashMap<>(); // Paper - Optimize explosions
++    public java.util.ArrayDeque<net.minecraft.world.level.block.RedstoneTorchBlock.Toggle> redstoneUpdateInfos; // Paper - Move from Map in BlockRedstoneTorch to here
+ 
+     public CraftWorld getWorld() {
+         return this.world;
+diff --git a/src/main/java/net/minecraft/world/level/block/RedstoneTorchBlock.java b/src/main/java/net/minecraft/world/level/block/RedstoneTorchBlock.java
+index 9b6f8508d16bcecd9dc148f75598655e3585f175..da07fce0cf7c9fbdb57d2c59e431b59bf583bf50 100644
+--- a/src/main/java/net/minecraft/world/level/block/RedstoneTorchBlock.java
++++ b/src/main/java/net/minecraft/world/level/block/RedstoneTorchBlock.java
+@@ -21,7 +21,7 @@ import org.bukkit.event.block.BlockRedstoneEvent; // CraftBukkit
+ public class RedstoneTorchBlock extends TorchBlock {
+ 
+     public static final BooleanProperty LIT = BlockStateProperties.LIT;
+-    private static final Map<BlockGetter, List<RedstoneTorchBlock.Toggle>> RECENT_TOGGLES = new WeakHashMap();
++    // Paper - Move the mapped list to World
+     public static final int RECENT_TOGGLE_TIMER = 60;
+     public static final int MAX_RECENT_TOGGLES = 8;
+     public static final int RESTART_DELAY = 160;
+@@ -72,11 +72,15 @@ public class RedstoneTorchBlock extends TorchBlock {
+     @Override
+     public void tick(BlockState state, ServerLevel world, BlockPos pos, RandomSource random) {
+         boolean flag = this.hasNeighborSignal(world, pos, state);
+-        List list = (List) RedstoneTorchBlock.RECENT_TOGGLES.get(world);
+-
+-        while (list != null && !list.isEmpty() && world.getGameTime() - ((RedstoneTorchBlock.Toggle) list.get(0)).when > 60L) {
+-            list.remove(0);
++        // Paper start
++        java.util.ArrayDeque<RedstoneTorchBlock.Toggle> redstoneUpdateInfos = world.redstoneUpdateInfos;
++        if (redstoneUpdateInfos != null) {
++            RedstoneTorchBlock.Toggle curr;
++            while ((curr = redstoneUpdateInfos.peek()) != null && world.getGameTime() - curr.when > 60L) {
++                redstoneUpdateInfos.poll();
++            }
+         }
++        // Paper end
+ 
+         // CraftBukkit start
+         org.bukkit.plugin.PluginManager manager = world.getCraftServer().getPluginManager();
+@@ -152,9 +156,12 @@ public class RedstoneTorchBlock extends TorchBlock {
+     }
+ 
+     private static boolean isToggledTooFrequently(Level world, BlockPos pos, boolean addNew) {
+-        List<RedstoneTorchBlock.Toggle> list = (List) RedstoneTorchBlock.RECENT_TOGGLES.computeIfAbsent(world, (iblockaccess) -> {
+-            return Lists.newArrayList();
+-        });
++        // Paper start
++        java.util.ArrayDeque<RedstoneTorchBlock.Toggle> list = world.redstoneUpdateInfos;
++        if (list == null) {
++            list = world.redstoneUpdateInfos = new java.util.ArrayDeque<>();
++        }
++
+ 
+         if (addNew) {
+             list.add(new RedstoneTorchBlock.Toggle(pos.immutable(), world.getGameTime()));
+@@ -162,9 +169,9 @@ public class RedstoneTorchBlock extends TorchBlock {
+ 
+         int i = 0;
+ 
+-        for (int j = 0; j < list.size(); ++j) {
+-            RedstoneTorchBlock.Toggle blockredstonetorch_redstoneupdateinfo = (RedstoneTorchBlock.Toggle) list.get(j);
+-
++        for (java.util.Iterator<RedstoneTorchBlock.Toggle> iterator = list.iterator(); iterator.hasNext();) {
++            RedstoneTorchBlock.Toggle blockredstonetorch_redstoneupdateinfo = iterator.next();
++            // Paper end
+             if (blockredstonetorch_redstoneupdateinfo.pos.equals(pos)) {
+                 ++i;
+                 if (i >= 8) {