patches

fix
2021-06-12 23:48:25 -07:00 · 2021-06-12 23:48:25 -07:00 · 79f1d1a078
commit 79f1d1a078
parent 0fa2a949ae
27 changed files with 340 additions and 481 deletions
--- a/patches/server/0268-Catch-JsonParseException-in-Entity-and-TE-names.patch
+++ b/patches/server/0268-Catch-JsonParseException-in-Entity-and-TE-names.patch
@ -0,0 +1,112 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Zach Brown <zach.brown@destroystokyo.com>
+Date: Sat, 22 Sep 2018 15:56:59 -0400
+Subject: [PATCH] Catch JsonParseException in Entity and TE names
+
+As a result, data that no longer parses correctly will not crash the server
+instead just logging the exception and continuing (and in most cases should
+fix the data)
+
+Player data is fixed pretty much immediately but some block data (like
+Shulkers) may need to be changed in order for it to re-save properly
+
+No more crashing though.
+
+diff --git a/src/main/java/net/minecraft/server/MCUtil.java b/src/main/java/net/minecraft/server/MCUtil.java
+index 5c290f263fc2b643987c96ea75729bf1ff493760..0df3961919f04f27eb265ab316aa5a0f15a70854 100644
+--- a/src/main/java/net/minecraft/server/MCUtil.java
+++ b/src/main/java/net/minecraft/server/MCUtil.java
+@@ -6,6 +6,8 @@ import com.google.common.util.concurrent.ThreadFactoryBuilder;
+ import it.unimi.dsi.fastutil.objects.ObjectRBTreeSet;
+ import net.minecraft.core.BlockPos;
+ import net.minecraft.core.Direction;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.network.chat.Component;
+ import net.minecraft.server.level.ServerLevel;
+ import net.minecraft.world.entity.Entity;
+ import net.minecraft.world.level.ChunkPos;
+@@ -513,6 +515,21 @@ public final class MCUtil {
+         }
+     }
+ 
+    @Nullable
+    public static Component getBaseComponentFromNbt(String key, CompoundTag compound) {
+        if (!compound.contains(key)) {
+            return null;
+        }
+        String string = compound.getString(key);
+        try {
+            return Component.Serializer.jsonToComponent(string);
+        } catch (com.google.gson.JsonParseException e) {
+            org.bukkit.Bukkit.getLogger().warning("Unable to parse " + key + " from " + compound +": " + e.getMessage());
+        }
+
+        return null;
+    }
+
+     public static int getTicketLevelFor(net.minecraft.world.level.chunk.ChunkStatus status) {
+         return net.minecraft.server.level.ChunkMap.MAX_VIEW_DISTANCE + net.minecraft.world.level.chunk.ChunkStatus.getDistance(status);
+     }
+diff --git a/src/main/java/net/minecraft/world/level/BaseCommandBlock.java b/src/main/java/net/minecraft/world/level/BaseCommandBlock.java
+index 04a3627667498b841fbff547d1874d99cc708af4..2e6172930526efc536a214e420e690a5ea42ac3e 100644
+--- a/src/main/java/net/minecraft/world/level/BaseCommandBlock.java
+++ b/src/main/java/net/minecraft/world/level/BaseCommandBlock.java
+@@ -12,6 +12,7 @@ import net.minecraft.commands.CommandSourceStack;
+ import net.minecraft.nbt.CompoundTag;
+ import net.minecraft.network.chat.Component;
+ import net.minecraft.network.chat.TextComponent;
+import net.minecraft.server.MCUtil;
+ import net.minecraft.server.MinecraftServer;
+ import net.minecraft.server.level.ServerLevel;
+ import net.minecraft.util.StringUtil;
+@@ -73,7 +74,7 @@ public abstract class BaseCommandBlock implements CommandSource {
+         this.command = nbt.getString("Command");
+         this.successCount = nbt.getInt("SuccessCount");
+         if (nbt.contains("CustomName", 8)) {
+-            this.setName(Component.Serializer.fromJson(nbt.getString("CustomName")));
+            this.setName(MCUtil.getBaseComponentFromNbt("CustomName", nbt)); // Paper - Catch ParseException
+         }
+ 
+         if (nbt.contains("TrackOutput", 1)) {
+diff --git a/src/main/java/net/minecraft/world/level/block/entity/BannerBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/BannerBlockEntity.java
+index e07c9e7e37a2c6aa3fc4b7fdc2d547d9c8a2177e..83f27ede626fc7e263acf2c9417a2c2699e4c79a 100644
+--- a/src/main/java/net/minecraft/world/level/block/entity/BannerBlockEntity.java
+++ b/src/main/java/net/minecraft/world/level/block/entity/BannerBlockEntity.java
+@@ -10,6 +10,7 @@ import net.minecraft.nbt.ListTag;
+ import net.minecraft.network.chat.Component;
+ import net.minecraft.network.chat.TranslatableComponent;
+ import net.minecraft.network.protocol.game.ClientboundBlockEntityDataPacket;
+import net.minecraft.server.MCUtil;
+ import net.minecraft.world.Nameable;
+ import net.minecraft.world.item.DyeColor;
+ import net.minecraft.world.item.ItemStack;
+@@ -95,7 +96,7 @@ public class BannerBlockEntity extends BlockEntity implements Nameable {
+     public void load(CompoundTag nbt) {
+         super.load(nbt);
+         if (nbt.contains("CustomName", 8)) {
+-            this.name = Component.Serializer.fromJson(nbt.getString("CustomName"));
+            this.name = MCUtil.getBaseComponentFromNbt("CustomName", nbt); // Paper - Catch ParseException
+         }
+ 
+         this.itemPatterns = nbt.getList("Patterns", 10);
+diff --git a/src/main/java/net/minecraft/world/level/block/entity/BaseContainerBlockEntity.java b/src/main/java/net/minecraft/world/level/block/entity/BaseContainerBlockEntity.java
+index 16fd9b356fee79b56893fe0a7c71721ae81664ab..67e39ebc7984d47bdf9081c24cb26845d70b83bb 100644
+--- a/src/main/java/net/minecraft/world/level/block/entity/BaseContainerBlockEntity.java
+++ b/src/main/java/net/minecraft/world/level/block/entity/BaseContainerBlockEntity.java
+@@ -5,6 +5,7 @@ import net.minecraft.core.BlockPos;
+ import net.minecraft.nbt.CompoundTag;
+ import net.minecraft.network.chat.Component;
+ import net.minecraft.network.chat.TranslatableComponent;
+import net.minecraft.server.MCUtil;
+ import net.minecraft.sounds.SoundEvents;
+ import net.minecraft.sounds.SoundSource;
+ import net.minecraft.world.Container;
+@@ -31,7 +32,7 @@ public abstract class BaseContainerBlockEntity extends BlockEntity implements Co
+         super.load(nbt);
+         this.lockKey = LockCode.fromTag(nbt);
+         if (nbt.contains("CustomName", 8)) {
+-            this.name = Component.Serializer.fromJson(nbt.getString("CustomName"));
+            this.name = MCUtil.getBaseComponentFromNbt("CustomName", nbt); // Paper - Catch ParseException
+         }
+ 
+     }
--- a/patches/server/0269-Honor-EntityAgeable.ageLock.patch
+++ b/patches/server/0269-Honor-EntityAgeable.ageLock.patch
@ -0,0 +1,18 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: BillyGalbreath <Blake.Galbreath@GMail.com>
+Date: Sun, 23 Sep 2018 20:59:53 -0500
+Subject: [PATCH] Honor EntityAgeable.ageLock
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/AgeableMob.java b/src/main/java/net/minecraft/world/entity/AgeableMob.java
+index 123b125a3576903767983c93135086ca7a8ea813..c0780a8714808498390282b7fa1da1f3aacf8e2a 100644
+--- a/src/main/java/net/minecraft/world/entity/AgeableMob.java
+++ b/src/main/java/net/minecraft/world/entity/AgeableMob.java
+@@ -84,6 +84,7 @@ public abstract class AgeableMob extends PathfinderMob {
+     }
+ 
+     public void ageUp(int age, boolean overGrow) {
+        if (ageLocked) return; // Paper - GH-1459
+         int j = this.getAge();
+         int k = j;
+ 
--- a/patches/server/0270-Configurable-connection-throttle-kick-message.patch
+++ b/patches/server/0270-Configurable-connection-throttle-kick-message.patch
@ -0,0 +1,35 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Shane Freeder <theboyetronic@gmail.com>
+Date: Tue, 2 Oct 2018 09:57:50 +0100
+Subject: [PATCH] Configurable connection throttle kick message
+
+
+diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
+index ee8ead249d89bc81f87bfff6a1f594a9aeb21250..585be2fcbd63a59f911df69136eae07ce665053c 100644
+--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
+@@ -282,6 +282,11 @@ public class PaperConfig {
+         authenticationServersDownKickMessage = Strings.emptyToNull(getString("messages.kick.authentication-servers-down", authenticationServersDownKickMessage));
+     }
+ 
+    public static String connectionThrottleKickMessage = "Connection throttled! Please wait before reconnecting.";
+    private static void connectionThrottleKickMessage() {
+        connectionThrottleKickMessage = getString("messages.kick.connection-throttle", connectionThrottleKickMessage);
+    }
+
+     private static void savePlayerData() {
+         Object val = config.get("settings.save-player-data");
+         if (val instanceof Boolean) {
+diff --git a/src/main/java/net/minecraft/server/network/ServerHandshakePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerHandshakePacketListenerImpl.java
+index 484221e5a9c246aa91e0eacef3911b0e9ecff401..c09d3cdb3acb04b6a833c30a619ff2af5e8b6b18 100644
+--- a/src/main/java/net/minecraft/server/network/ServerHandshakePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerHandshakePacketListenerImpl.java
+@@ -50,7 +50,7 @@ public class ServerHandshakePacketListenerImpl implements ServerHandshakePacketL
+                     synchronized (ServerHandshakePacketListenerImpl.throttleTracker) {
+                         if (ServerHandshakePacketListenerImpl.throttleTracker.containsKey(address) && !"127.0.0.1".equals(address.getHostAddress()) && currentTime - ServerHandshakePacketListenerImpl.throttleTracker.get(address) < connectionThrottle) {
+                             ServerHandshakePacketListenerImpl.throttleTracker.put(address, currentTime);
+-                            TranslatableComponent chatmessage = new TranslatableComponent("Connection throttled! Please wait before reconnecting.");
+                            TranslatableComponent chatmessage = new TranslatableComponent(com.destroystokyo.paper.PaperConfig.connectionThrottleKickMessage); // Paper - Configurable connection throttle kick message
+                             this.connection.send(new ClientboundLoginDisconnectPacket(chatmessage));
+                             this.connection.disconnect(chatmessage);
+                             return;
--- a/patches/server/0271-Hook-into-CB-plugin-rewrites.patch
+++ b/patches/server/0271-Hook-into-CB-plugin-rewrites.patch
@ -0,0 +1,184 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Zach Brown <zach@zachbr.io>
+Date: Wed, 3 Oct 2018 20:09:18 -0400
+Subject: [PATCH] Hook into CB plugin rewrites
+
+Allows us to do fun stuff like rewrite the OBC util fastutil location to
+our own relocation. Also lets us rewrite NMS calls for when we're
+debugging in an IDE pre-relocate.
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/util/Commodore.java b/src/main/java/org/bukkit/craftbukkit/util/Commodore.java
+index a79c62e1c3ee49ada505c07b1171b439beeb4bdf..cbf630243410f97c21b14f654e81dc96b0323b70 100644
+--- a/src/main/java/org/bukkit/craftbukkit/util/Commodore.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/Commodore.java
+@@ -6,7 +6,9 @@ import java.io.FileOutputStream;
+ import java.io.InputStream;
+ import java.util.Arrays;
+ import java.util.Enumeration;
+import java.util.HashMap;
+ import java.util.HashSet;
+import java.util.Map;
+ import java.util.Set;
+ import java.util.jar.JarEntry;
+ import java.util.jar.JarFile;
+@@ -20,10 +22,15 @@ import org.bukkit.plugin.AuthorNagException;
+ import org.objectweb.asm.ClassReader;
+ import org.objectweb.asm.ClassVisitor;
+ import org.objectweb.asm.ClassWriter;
+import org.objectweb.asm.FieldVisitor;
+import org.objectweb.asm.Handle;
+import org.objectweb.asm.Label;
+ import org.objectweb.asm.MethodVisitor;
+ import org.objectweb.asm.Opcodes;
+ import org.objectweb.asm.Type;
+ 
+import javax.annotation.Nonnull;
+
+ /**
+  * This file is imported from Commodore.
+  *
+@@ -46,6 +53,42 @@ public class Commodore
+             "org/bukkit/inventory/ItemStack (I)V setTypeId"
+     ) );
+ 
+    // Paper start - Plugin rewrites
+    private static final Map<String, String> SEARCH_AND_REMOVE = initReplacementsMap();
+    private static Map<String, String> initReplacementsMap()
+    {
+        Map<String, String> getAndRemove = new HashMap<>();
+        // Be wary of maven shade's relocations
+        getAndRemove.put( "org/bukkit/".concat( "craftbukkit/libs/it/unimi/dsi/fastutil/" ), "org/bukkit/".concat( "craftbukkit/libs/" ) ); // Remap fastutil to our location
+
+        if ( Boolean.getBoolean( "debug.rewriteForIde" ) )
+        {
+            // unversion incoming calls for pre-relocate debug work
+            final String NMS_REVISION_PACKAGE = "v1_16_R3/";
+
+            getAndRemove.put( "net/minecraft/".concat( "server/" + NMS_REVISION_PACKAGE ), NMS_REVISION_PACKAGE );
+            getAndRemove.put( "org/bukkit/".concat( "craftbukkit/" + NMS_REVISION_PACKAGE ), NMS_REVISION_PACKAGE );
+        }
+
+        return getAndRemove;
+    }
+
+    @Nonnull
+    private static String getOriginalOrRewrite(@Nonnull String original)
+    {
+        String rewrite = null;
+        for ( Map.Entry<String, String> entry : SEARCH_AND_REMOVE.entrySet() )
+        {
+            if ( original.contains( entry.getKey() ) )
+            {
+                rewrite = original.replace( entry.getValue(), "" );
+            }
+        }
+
+        return rewrite != null ? rewrite : original;
+    }
+    // Paper end
+
+     public static void main(String[] args)
+     {
+         OptionParser parser = new OptionParser();
+@@ -130,15 +173,86 @@ public class Commodore
+ 
+         cr.accept( new ClassVisitor( Opcodes.ASM9, cw )
+         {
+            // Paper start - Rewrite plugins
+            @Override
+            public FieldVisitor visitField(int access, String name, String desc, String signature, Object value)
+            {
+                desc = getOriginalOrRewrite( desc );
+                if ( signature != null ) {
+                    signature = getOriginalOrRewrite( signature );
+                }
+
+                return super.visitField( access, name, desc, signature, value) ;
+            }
+            // Paper end
+
+             @Override
+             public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions)
+             {
+                 return new MethodVisitor( api, super.visitMethod( access, name, desc, signature, exceptions ) )
+                 {
+                    // Paper start - Plugin rewrites
+                    @Override
+                    public void visitInvokeDynamicInsn(String name, String desc, Handle bootstrapMethodHandle, Object... bootstrapMethodArguments)
+                    {
+                        // Paper start - Rewrite plugins
+                        name = getOriginalOrRewrite( name );
+                        if ( desc != null )
+                        {
+                            desc = getOriginalOrRewrite( desc );
+                        }
+                        // Paper end
+
+                        super.visitInvokeDynamicInsn( name, desc, bootstrapMethodHandle, bootstrapMethodArguments );
+                    }
+
+                    @Override
+                    public void visitTypeInsn(int opcode, String type)
+                    {
+                        type = getOriginalOrRewrite( type );
+
+                        super.visitTypeInsn( opcode, type );
+                    }
+
+                    @Override
+                    public void visitFrame(int type, int nLocal, Object[] local, int nStack, Object[] stack) {
+                        for ( int i = 0; i < local.length; i++ )
+                        {
+                            if ( !( local[i] instanceof String ) ) { continue; }
+
+                            local[i] = getOriginalOrRewrite( (String) local[i] );
+                        }
+
+                        for ( int i = 0; i < stack.length; i++ )
+                        {
+                            if ( !( stack[i] instanceof String ) ) { continue; }
+
+                            stack[i] = getOriginalOrRewrite( (String) stack[i] );
+                        }
+
+                        super.visitFrame( type, nLocal, local, nStack, stack );
+                    }
+
+                    @Override
+                    public void visitLocalVariable(String name, String descriptor, String signature, Label start, Label end, int index)
+                    {
+                        descriptor = getOriginalOrRewrite( descriptor );
+
+                        super.visitLocalVariable( name, descriptor, signature, start, end, index );
+                    }
+                    // Paper end
+ 
+                     @Override
+                     public void visitFieldInsn(int opcode, String owner, String name, String desc)
+                     {
+                        // Paper start - Rewrite plugins
+                        owner = getOriginalOrRewrite( owner );
+                        if ( desc != null )
+                        {
+                            desc = getOriginalOrRewrite( desc );
+                        }
+                        // Paper end
+
+                         if ( owner.equals( "org/bukkit/block/Biome" ) )
+                         {
+                             switch ( name )
+@@ -273,6 +387,14 @@ public class Commodore
+                             return;
+                         }
+ 
+                        // Paper start - Rewrite plugins
+                        owner = getOriginalOrRewrite( owner) ;
+                        if (desc != null)
+                        {
+                            desc = getOriginalOrRewrite(desc);
+                        }
+                        // Paper end
+
+                         if ( modern )
+                         {
+                             if ( owner.equals( "org/bukkit/Material" ) )
--- a/patches/server/0272-Add-sun-related-API.patch
+++ b/patches/server/0272-Add-sun-related-API.patch
@ -0,0 +1,53 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: BillyGalbreath <Blake.Galbreath@GMail.com>
+Date: Sun, 7 Oct 2018 00:54:21 -0500
+Subject: [PATCH] Add sun related API
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/Mob.java b/src/main/java/net/minecraft/world/entity/Mob.java
+index 8451baff82cb7ec7615ab50a409724897ccf4d95..32e8ae0d2a0f78af671a632c4d1be58a0b38a392 100644
+--- a/src/main/java/net/minecraft/world/entity/Mob.java
+++ b/src/main/java/net/minecraft/world/entity/Mob.java
+@@ -1561,7 +1561,7 @@ public abstract class Mob extends LivingEntity {
+ 
+     }
+ 
+-    protected boolean isSunBurnTick() {
+    public boolean isSunBurnTick() { // Paper - protected -> public
+         if (this.level.isDay() && !this.level.isClientSide) {
+             float f = this.getBrightness();
+             BlockPos blockposition = new BlockPos(this.getX(), this.getEyeY(), this.getZ());
+diff --git a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+index b8565aa86b478adb6fca6d433637ddb342ce6dcb..fda8858375a08e0aac15ca00751df5a34ed6a0f2 100644
+--- a/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftWorld.java
+@@ -866,6 +866,13 @@ public class CraftWorld implements World {
+         }
+     }
+ 
+    // Paper start
+    @Override
+    public boolean isDayTime() {
+        return getHandle().isDay();
+    }
+    // Paper end
+
+     @Override
+     public long getGameTime() {
+         return world.levelData.getGameTime();
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftMob.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftMob.java
+index 9c9fa83615cd06539ce5e4e3d4feaa69f65b7931..317b6abd2764cf34ef5c42bdbf48ab0bc5a03d27 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftMob.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftMob.java
+@@ -77,4 +77,11 @@ public abstract class CraftMob extends CraftLivingEntity implements Mob {
+     public long getSeed() {
+         return this.getHandle().lootTableSeed;
+     }
+
+    // Paper start
+    @Override
+    public boolean isInDaylight() {
+        return getHandle().isSunBurnTick();
+    }
+    // Paper end
+ }
--- a/patches/server/0273-Add-LivingEntity-getTargetEntity.patch
+++ b/patches/server/0273-Add-LivingEntity-getTargetEntity.patch
@ -0,0 +1,114 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: BillyGalbreath <Blake.Galbreath@GMail.com>
+Date: Sat, 22 Sep 2018 00:33:08 -0500
+Subject: [PATCH] Add LivingEntity#getTargetEntity
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
+index 960c3e75a60ef33141e615bd8b256528eeaf399c..0974781e2f7fc541eaf397de033fb12b87dbf8ba 100644
+--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
+@@ -2339,6 +2339,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, n
+         this.setYHeadRot(yaw);
+     }
+ 
+    public final float getCollisionBorderSize() { return getPickRadius(); } // Paper - OBFHELPER
+     public float getPickRadius() {
+         return 0.0F;
+     }
+diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
+index fd0c307a4b340661ba9aff9ae4e0055c139a1ebd..8333d604fce05349455bf1779f3e5b0a980c4c16 100644
+--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
+@@ -116,6 +116,7 @@ import net.minecraft.world.level.storage.loot.LootTable;
+ import net.minecraft.world.level.storage.loot.parameters.LootContextParamSets;
+ import net.minecraft.world.level.storage.loot.parameters.LootContextParams;
+ import net.minecraft.world.phys.AABB;
+import net.minecraft.world.phys.EntityHitResult;
+ import net.minecraft.world.phys.HitResult;
+ import net.minecraft.world.phys.Vec3;
+ import net.minecraft.world.scores.PlayerTeam;
+@@ -3730,6 +3731,38 @@ public abstract class LivingEntity extends Entity {
+         return level.clip(raytrace);
+     }
+ 
+    public EntityHitResult getTargetEntity(int maxDistance) {
+        if (maxDistance < 1 || maxDistance > 120) {
+            throw new IllegalArgumentException("maxDistance must be between 1-120");
+        }
+
+        Vec3 start = this.getEyePosition(1.0F);
+        Vec3 direction = this.getLookAngle();
+        Vec3 end = start.add(direction.x * maxDistance, direction.y * maxDistance, direction.z * maxDistance);
+
+        List<Entity> entityList = level.getEntities(this, getBoundingBox().expandTowards(direction.x * maxDistance, direction.y * maxDistance, direction.z * maxDistance).inflate(1.0D, 1.0D, 1.0D), EntitySelector.NO_CREATIVE_OR_SPECTATOR.and(Entity::isPickable));
+
+        double distance = 0.0D;
+        EntityHitResult result = null;
+
+        for (Entity entity : entityList) {
+            final double inflationAmount = (double) entity.getCollisionBorderSize();
+            AABB aabb = entity.getBoundingBox().inflate(inflationAmount, inflationAmount, inflationAmount);
+            Optional<Vec3> rayTraceResult = aabb.clip(start, end);
+
+            if (rayTraceResult.isPresent()) {
+                Vec3 rayTrace = rayTraceResult.get();
+                double distanceTo = start.distanceToSqr(rayTrace);
+                if (distanceTo < distance || distance == 0.0D) {
+                    result = new EntityHitResult(entity, rayTrace);
+                    distance = distanceTo;
+                }
+            }
+        }
+
+        return result;
+    }
+
+     public int shieldBlockingDelay = level.paperConfig.shieldBlockingDelay;
+ 
+     public int getShieldBlockingDelay() {
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
+index cb4c15d17ea3f22e6baa73ba6ce2a18e34ac4b00..5477f288db57d63051f4579b8cd3c19e3af430ee 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
+@@ -1,5 +1,6 @@
+ package org.bukkit.craftbukkit.entity;
+ 
+import com.destroystokyo.paper.entity.TargetEntityInfo;
+ import com.google.common.base.Preconditions;
+ import com.google.common.collect.Sets;
+ import java.util.ArrayList;
+@@ -210,6 +211,33 @@ public class CraftLivingEntity extends CraftEntity implements LivingEntity {
+             new com.destroystokyo.paper.block.TargetBlockInfo(org.bukkit.craftbukkit.block.CraftBlock.at(getHandle().level, ((net.minecraft.world.phys.BlockHitResult)rayTrace).getBlockPos()),
+                 net.minecraft.server.MCUtil.toBukkitBlockFace(((net.minecraft.world.phys.BlockHitResult)rayTrace).getDirection()));
+     }
+
+    public Entity getTargetEntity(int maxDistance, boolean ignoreBlocks) {
+        net.minecraft.world.phys.EntityHitResult rayTrace = rayTraceEntity(maxDistance, ignoreBlocks);
+        return rayTrace == null ? null : rayTrace.getEntity().getBukkitEntity();
+    }
+
+    public TargetEntityInfo getTargetEntityInfo(int maxDistance, boolean ignoreBlocks) {
+        net.minecraft.world.phys.EntityHitResult rayTrace = rayTraceEntity(maxDistance, ignoreBlocks);
+        return rayTrace == null ? null : new TargetEntityInfo(rayTrace.getEntity().getBukkitEntity(), new org.bukkit.util.Vector(rayTrace.getLocation().x, rayTrace.getLocation().y, rayTrace.getLocation().z));
+    }
+
+    public net.minecraft.world.phys.EntityHitResult rayTraceEntity(int maxDistance, boolean ignoreBlocks) {
+        net.minecraft.world.phys.EntityHitResult rayTrace = getHandle().getTargetEntity(maxDistance);
+        if (rayTrace == null) {
+            return null;
+        }
+        if (!ignoreBlocks) {
+            net.minecraft.world.phys.HitResult rayTraceBlocks = getHandle().getRayTrace(maxDistance, net.minecraft.world.level.ClipContext.Fluid.NONE);
+            if (rayTraceBlocks != null) {
+                net.minecraft.world.phys.Vec3 eye = getHandle().getEyePosition(1.0F);
+                if (eye.distanceToSqr(rayTraceBlocks.getLocation()) <= eye.distanceToSqr(rayTrace.getLocation())) {
+                    return null;
+                }
+            }
+        }
+        return rayTrace;
+    }
+     // Paper end
+ 
+     @Override
--- a/patches/server/0274-Turtle-API.patch
+++ b/patches/server/0274-Turtle-API.patch
@ -0,0 +1,144 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: BillyGalbreath <Blake.Galbreath@GMail.com>
+Date: Sat, 29 Sep 2018 16:08:23 -0500
+Subject: [PATCH] Turtle API
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/ai/goal/MoveToBlockGoal.java b/src/main/java/net/minecraft/world/entity/ai/goal/MoveToBlockGoal.java
+index 70a51ba19fb34f652858b18f24554261787d97e2..065d0752db0e3ae2a89d707aaa2145807f50ecad 100644
+--- a/src/main/java/net/minecraft/world/entity/ai/goal/MoveToBlockGoal.java
+++ b/src/main/java/net/minecraft/world/entity/ai/goal/MoveToBlockGoal.java
+@@ -14,7 +14,7 @@ public abstract class MoveToBlockGoal extends Goal {
+     protected int nextStartTick;
+     protected int tryTicks;
+     private int maxStayTicks;
+-    protected BlockPos blockPos = BlockPos.ZERO;
+    protected BlockPos blockPos = BlockPos.ZERO; public final BlockPos getTargetPosition() { return this.blockPos; } // Paper - OBFHELPER
+     private boolean reachedTarget;
+     private final int searchRange;
+     private final int verticalSearchRange;
+diff --git a/src/main/java/net/minecraft/world/entity/animal/Turtle.java b/src/main/java/net/minecraft/world/entity/animal/Turtle.java
+index b782d278463a72b8514719e9b14986f268828772..e638d982b4bd1d261a7282cad6dab98ad0b55213 100644
+--- a/src/main/java/net/minecraft/world/entity/animal/Turtle.java
+++ b/src/main/java/net/minecraft/world/entity/animal/Turtle.java
+@@ -11,6 +11,7 @@ import net.minecraft.nbt.CompoundTag;
+ import net.minecraft.network.syncher.EntityDataAccessor;
+ import net.minecraft.network.syncher.EntityDataSerializers;
+ import net.minecraft.network.syncher.SynchedEntityData;
+import net.minecraft.server.MCUtil;
+ import net.minecraft.server.level.ServerLevel;
+ import net.minecraft.server.level.ServerPlayer;
+ import net.minecraft.sounds.SoundEvent;
+@@ -93,7 +94,7 @@ public class Turtle extends Animal {
+         this.entityData.set(Turtle.HOME_POS, pos);
+     }
+ 
+-    BlockPos getHomePos() {
+    public BlockPos getHomePos() { // Paper - public
+         return (BlockPos) this.entityData.get(Turtle.HOME_POS);
+     }
+ 
+@@ -109,7 +110,7 @@ public class Turtle extends Animal {
+         return (Boolean) this.entityData.get(Turtle.HAS_EGG);
+     }
+ 
+-    void setHasEgg(boolean hasEgg) {
+    public void setHasEgg(boolean hasEgg) { // Paper
+         this.entityData.set(Turtle.HAS_EGG, hasEgg);
+     }
+ 
+@@ -122,19 +123,19 @@ public class Turtle extends Animal {
+         this.entityData.set(Turtle.LAYING_EGG, diggingSand);
+     }
+ 
+-    boolean isGoingHome() {
+    public boolean isGoingHome() { // Paper - public
+         return (Boolean) this.entityData.get(Turtle.GOING_HOME);
+     }
+ 
+-    void setGoingHome(boolean landBound) {
+    public void setGoingHome(boolean landBound) { // Paper - public
+         this.entityData.set(Turtle.GOING_HOME, landBound);
+     }
+ 
+-    boolean isTravelling() {
+    public boolean isTravelling() { // Paper - public
+         return (Boolean) this.entityData.get(Turtle.TRAVELLING);
+     }
+ 
+-    void setTravelling(boolean travelling) {
+    public void setTravelling(boolean travelling) { // Paper - public
+         this.entityData.set(Turtle.TRAVELLING, travelling);
+     }
+ 
+@@ -487,14 +488,17 @@ public class Turtle extends Animal {
+ 
+             if (!this.turtle.isInWater() && this.isReachedTarget()) {
+                 if (this.turtle.layEggCounter < 1) {
+-                    this.turtle.setLayingEgg(true);
+                    this.turtle.setLayingEgg(new com.destroystokyo.paper.event.entity.TurtleStartDiggingEvent((org.bukkit.entity.Turtle) this.turtle.getBukkitEntity(), MCUtil.toLocation(this.turtle.level, this.getTargetPosition())).callEvent()); // Paper
+                 } else if (this.turtle.layEggCounter > 200) {
+                     Level world = this.turtle.level;
+ 
+                     // CraftBukkit start
+-                    if (!org.bukkit.craftbukkit.event.CraftEventFactory.callEntityChangeBlockEvent(this.turtle, this.blockPos.above(), (BlockState) Blocks.TURTLE_EGG.defaultBlockState().setValue(TurtleEggBlock.EGGS, this.turtle.random.nextInt(4) + 1)).isCancelled()) {
+                    // Paper start
+                    int eggCount = this.turtle.random.nextInt(4) + 1;
+                    com.destroystokyo.paper.event.entity.TurtleLayEggEvent layEggEvent = new com.destroystokyo.paper.event.entity.TurtleLayEggEvent((org.bukkit.entity.Turtle) this.turtle.getBukkitEntity(), MCUtil.toLocation(this.turtle.level, this.blockPos.above()), eggCount);
+                    if (layEggEvent.callEvent() && !org.bukkit.craftbukkit.event.CraftEventFactory.callEntityChangeBlockEvent(this.turtle, this.blockPos.above(), Blocks.TURTLE_EGG.defaultBlockState().setValue(TurtleEggBlock.EGGS, layEggEvent.getEggCount())).isCancelled()) {
+                     world.playSound((Player) null, blockposition, SoundEvents.TURTLE_LAY_EGG, SoundSource.BLOCKS, 0.3F, 0.9F + world.random.nextFloat() * 0.2F);
+-                    world.setBlock(this.blockPos.above(), (BlockState) Blocks.TURTLE_EGG.defaultBlockState().setValue(TurtleEggBlock.EGGS, this.turtle.random.nextInt(4) + 1), 3);
+                    world.setBlock(this.blockPos.above(), (BlockState) Blocks.TURTLE_EGG.defaultBlockState().setValue(TurtleEggBlock.EGGS, layEggEvent.getEggCount()), 3);
+                     }
+                     // CraftBukkit end
+                     this.turtle.setHasEgg(false);
+@@ -562,7 +566,7 @@ public class Turtle extends Animal {
+ 
+         @Override
+         public boolean canUse() {
+-            return this.turtle.isBaby() ? false : (this.turtle.hasEgg() ? true : (this.turtle.getRandom().nextInt(700) != 0 ? false : !this.turtle.getHomePos().closerThan((Position) this.turtle.position(), 64.0D)));
+            return this.turtle.isBaby() ? false : (this.turtle.hasEgg() ? true : (this.turtle.getRandom().nextInt(700) != 0 ? false : !this.turtle.getHomePos().closerThan((Position) this.turtle.position(), 64.0D))) && new com.destroystokyo.paper.event.entity.TurtleGoHomeEvent((org.bukkit.entity.Turtle) this.turtle.getBukkitEntity()).callEvent(); // Paper
+         }
+ 
+         @Override
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftTurtle.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftTurtle.java
+index ed08089f21c8958fc9fc7e6e73a2b6ff9108242c..a3849ebba14b47b33f1af57c47f94c02aebea232 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftTurtle.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftTurtle.java
+@@ -24,4 +24,36 @@ public class CraftTurtle extends CraftAnimals implements Turtle {
+     public EntityType getType() {
+         return EntityType.TURTLE;
+     }
+
+    // Paper start
+    @Override
+    public org.bukkit.Location getHome() {
+        return net.minecraft.server.MCUtil.toLocation(getHandle().level, getHandle().getHomePos());
+    }
+
+    @Override
+    public void setHome(org.bukkit.Location location) {
+        getHandle().setHomePos(net.minecraft.server.MCUtil.toBlockPosition(location));
+    }
+
+    @Override
+    public boolean isGoingHome() {
+        return getHandle().isGoingHome();
+    }
+
+    @Override
+    public boolean isDigging() {
+        return getHandle().isLayingEgg();
+    }
+
+    @Override
+    public boolean hasEgg() {
+        return getHandle().hasEgg();
+    }
+
+    @Override
+    public void setHasEgg(boolean hasEgg) {
+        getHandle().setHasEgg(hasEgg);
+    }
+    // Paper end
+ }
--- a/patches/server/0275-MC-50319-Check-other-worlds-for-shooter-of-projectil.patch
+++ b/patches/server/0275-MC-50319-Check-other-worlds-for-shooter-of-projectil.patch
@ -0,0 +1,35 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Wed, 17 Oct 2018 19:17:27 -0400
+Subject: [PATCH] MC-50319: Check other worlds for shooter of projectiles
+
+Say a player shoots an arrow through a nether portal, the game
+would lose the shooter for determining things such as Player Kills,
+because the entity is in another world.
+
+If the projectile fails to find the shooter in the current world, check
+other worlds.
+
+diff --git a/src/main/java/net/minecraft/world/entity/projectile/Projectile.java b/src/main/java/net/minecraft/world/entity/projectile/Projectile.java
+index 30118ff975da9491fa41db2133d217c2a797a8e3..7311923d36ee872b4331d84f80709bb6cee61086 100644
+--- a/src/main/java/net/minecraft/world/entity/projectile/Projectile.java
+++ b/src/main/java/net/minecraft/world/entity/projectile/Projectile.java
+@@ -57,6 +57,18 @@ public abstract class Projectile extends Entity {
+             return this.cachedOwner;
+         } else if (this.ownerUUID != null && this.level instanceof ServerLevel) {
+             this.cachedOwner = ((ServerLevel) this.level).getEntity(this.ownerUUID);
+            // Paper start - check all worlds
+            if (this.cachedOwner == null) {
+                for (final ServerLevel level : this.level.getServer().getAllLevels()) {
+                    if (level == this.level) continue;
+                    final Entity entity = level.getEntity(this.ownerUUID);
+                    if (entity != null) {
+                        this.cachedOwner = entity;
+                        break;
+                    }
+                }
+            }
+            // Paper end
+             return this.cachedOwner;
+         } else {
+             return null;
--- a/patches/server/0276-Call-player-spectator-target-events-and-improve-impl.patch
+++ b/patches/server/0276-Call-player-spectator-target-events-and-improve-impl.patch
@ -0,0 +1,108 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Caleb Bassham <caleb.bassham@gmail.com>
+Date: Fri, 28 Sep 2018 02:32:19 -0500
+Subject: [PATCH] Call player spectator target events and improve
+ implementation
+
+Use a proper teleport for teleporting to entities in different
+worlds.
+
+Implementation improvements authored by Spottedleaf <Spottedleaf@users.noreply.github.com>
+Validate that the target entity is valid and deny spectate
+requests from frozen players.
+
+Also, make sure the entity is spawned to the client before
+sending the camera packet. If the entity isn't spawned clientside
+when it receives the camera packet, then the client will not
+spectate the target entity.
+
+Co-authored-by: Spottedleaf <Spottedleaf@users.noreply.github.com>
+
+diff --git a/src/main/java/net/minecraft/server/level/ServerPlayer.java b/src/main/java/net/minecraft/server/level/ServerPlayer.java
+index bea1461ee3bd65f02bf6add6ed967555092fd675..b2324b53b3cec3e577a8ec8c45b113c232d220a6 100644
+--- a/src/main/java/net/minecraft/server/level/ServerPlayer.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayer.java
+@@ -1822,14 +1822,58 @@ public class ServerPlayer extends Player {
+     }
+ 
+     public void setCamera(Entity entity) {
+        // Paper start - Add PlayerStartSpectatingEntityEvent and PlayerStopSpectatingEntity Event and improve implementation
+         Entity entity1 = this.getCamera();
+ 
+-        this.camera = (Entity) (entity == null ? this : entity);
+-        if (entity1 != this.camera) {
+-            this.connection.send(new ClientboundSetCameraPacket(this.camera));
+-            this.connection.b(this.camera.getX(), this.camera.getY(), this.camera.getZ(), this.getYRot(), this.getXRot(), TeleportCause.SPECTATE); // CraftBukkit
+        if (entity == null) {
+            entity = this;
+         }
+ 
+        if (entity1 == entity) return; // new spec target is the current spec target
+
+        if (entity == this) {
+            com.destroystokyo.paper.event.player.PlayerStopSpectatingEntityEvent playerStopSpectatingEntityEvent = new com.destroystokyo.paper.event.player.PlayerStopSpectatingEntityEvent(this.getBukkitEntity(), entity1.getBukkitEntity());
+
+            if (!playerStopSpectatingEntityEvent.callEvent()) {
+                return;
+            }
+        } else {
+            com.destroystokyo.paper.event.player.PlayerStartSpectatingEntityEvent playerStartSpectatingEntityEvent = new com.destroystokyo.paper.event.player.PlayerStartSpectatingEntityEvent(this.getBukkitEntity(), entity1.getBukkitEntity(), entity.getBukkitEntity());
+
+            if (!playerStartSpectatingEntityEvent.callEvent()) {
+                return;
+            }
+        }
+        // Validate
+        if (entity != this) {
+            if (entity.isRemoved() || !entity.valid || entity.level == null) {
+                MinecraftServer.LOGGER.info("Blocking player " + this.toString() + " from spectating invalid entity " + entity.toString());
+                return;
+            }
+            if (this.isImmobile()) {
+                // use debug: clients might maliciously spam this
+                MinecraftServer.LOGGER.debug("Blocking frozen player " + this.toString() + " from spectating entity " + entity.toString());
+                return;
+            }
+        }
+
+        this.camera = entity; // only set after validating state
+
+        if (entity != this) {
+            // Make sure we're in the right place
+            this.ejectPassengers(); // teleport can fail if we have passengers...
+            this.getBukkitEntity().teleport(new Location(entity.getCommandSenderWorld().getWorld(), entity.getX(), entity.getY(), entity.getZ(), this.getYRot(), this.getXRot()), TeleportCause.SPECTATE); // Correctly handle cross-world entities from api calls by using CB teleport
+
+            // Make sure we're tracking the entity before sending
+            ChunkMap.TrackedEntity tracker = ((ServerLevel)entity.level).getChunkSource().chunkMap.entityMap.get(entity.getId());
+            if (tracker != null) { // dumb plugins...
+                tracker.updatePlayer(this);
+            }
+        } else {
+            this.connection.teleport(this.camera.getX(), this.camera.getY(), this.camera.getZ(), this.getYRot(), this.getXRot(), TeleportCause.SPECTATE); // CraftBukkit
+        }
+        this.connection.send(new ClientboundSetCameraPacket(entity));
+        // Paper end
+     }
+ 
+     @Override
+diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+index a29b8c83be940e4b3db06d881b59b03120e931ab..06922b26ca1f2e31f7c8a527f1a8fdda4a8554c0 100644
+--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+@@ -1068,7 +1068,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
+         }
+     }
+ 
+-    private void a(List<TextFilter.FilteredText> list, UnaryOperator<String> unaryoperator, ItemStack itemstack, int slot, ItemStack old) { // CraftBukkit
+    public void a(List<TextFilter.FilteredText> list, UnaryOperator<String> unaryoperator, ItemStack itemstack, int slot, ItemStack old) { // CraftBukkit // Paper - make public
+         ListTag nbttaglist = new ListTag();
+ 
+         if (this.player.isTextFilteringEnabled()) {
+@@ -1381,6 +1381,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
+         this.a(x, y, z, yaw, pitch, PlayerTeleportEvent.TeleportCause.UNKNOWN);
+     }
+ 
+    public final void teleport(double d0, double d1, double d2, float f, float f1, PlayerTeleportEvent.TeleportCause cause) { this.a(d0, d1, d2, f, f1, cause); } // Paper - OBFHELPER
+     public void a(double d0, double d1, double d2, float f, float f1, PlayerTeleportEvent.TeleportCause cause) {
+         this.a(d0, d1, d2, f, f1, Collections.emptySet(), true, cause);
+     }
--- a/patches/server/0277-Add-Velocity-IP-Forwarding-Support.patch
+++ b/patches/server/0277-Add-Velocity-IP-Forwarding-Support.patch
@ -0,0 +1,239 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Andrew Steinborn <git@steinborn.me>
+Date: Mon, 8 Oct 2018 14:36:14 -0400
+Subject: [PATCH] Add Velocity IP Forwarding Support
+
+While Velocity supports BungeeCord-style IP forwarding, it is not secure. Users
+have a lot of problems setting up firewalls or setting up plugins like IPWhitelist.
+Further, the BungeeCord IP forwarding protocol still retains essentially its original
+form, when there is brand new support for custom login plugin messages in 1.13.
+
+Velocity's modern IP forwarding uses an HMAC-SHA256 code to ensure authenticity
+of messages, is packed into a binary format that is smaller than BungeeCord's
+forwarding, and is integrated into the Minecraft login process by using the 1.13
+login plugin message packet.
+
+diff --git a/src/main/java/com/destroystokyo/paper/PaperConfig.java b/src/main/java/com/destroystokyo/paper/PaperConfig.java
+index 585be2fcbd63a59f911df69136eae07ce665053c..9768c591e72ce2ef5fdb43e2fc63378c57773216 100644
+--- a/src/main/java/com/destroystokyo/paper/PaperConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperConfig.java
+@@ -9,6 +9,7 @@ import java.io.IOException;
+ import java.lang.reflect.InvocationTargetException;
+ import java.lang.reflect.Method;
+ import java.lang.reflect.Modifier;
+import java.nio.charset.StandardCharsets;
+ import java.util.HashMap;
+ import java.util.List;
+ import java.util.Map;
+@@ -253,7 +254,7 @@ public class PaperConfig {
+     }
+ 
+     public static boolean isProxyOnlineMode() {
+-        return Bukkit.getOnlineMode() || (SpigotConfig.bungee && bungeeOnlineMode);
+        return Bukkit.getOnlineMode() || (SpigotConfig.bungee && bungeeOnlineMode) || (velocitySupport && velocityOnlineMode);
+     }
+ 
+     public static int packetInSpamThreshold = 300;
+@@ -326,6 +327,20 @@ public class PaperConfig {
+         tabSpamLimit = getInt("settings.spam-limiter.tab-spam-limit", tabSpamLimit);
+     }
+ 
+    public static boolean velocitySupport;
+    public static boolean velocityOnlineMode;
+    public static byte[] velocitySecretKey;
+    private static void velocitySupport() {
+        velocitySupport = getBoolean("settings.velocity-support.enabled", false);
+        velocityOnlineMode = getBoolean("settings.velocity-support.online-mode", false);
+        String secret = getString("settings.velocity-support.secret", "");
+        if (velocitySupport && secret.isEmpty()) {
+            fatal("Velocity support is enabled, but no secret key was specified. A secret key is required!");
+        } else {
+            velocitySecretKey = secret.getBytes(StandardCharsets.UTF_8);
+        }
+    }
+
+     public static boolean asyncChunks = false;
+     private static void asyncChunks() {
+         ConfigurationSection section;
+diff --git a/src/main/java/com/destroystokyo/paper/proxy/VelocityProxy.java b/src/main/java/com/destroystokyo/paper/proxy/VelocityProxy.java
+new file mode 100644
+index 0000000000000000000000000000000000000000..41d73aa91fb401612e087aa1b7278ba61d28bf3a
+--- /dev/null
+++ b/src/main/java/com/destroystokyo/paper/proxy/VelocityProxy.java
+@@ -0,0 +1,66 @@
+package com.destroystokyo.paper.proxy;
+
+import com.destroystokyo.paper.PaperConfig;
+import com.google.common.net.InetAddresses;
+import com.mojang.authlib.GameProfile;
+import com.mojang.authlib.properties.Property;
+import java.net.InetAddress;
+import java.security.InvalidKeyException;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+
+import javax.crypto.Mac;
+import javax.crypto.spec.SecretKeySpec;
+import net.minecraft.network.FriendlyByteBuf;
+import net.minecraft.resources.ResourceLocation;
+
+public class VelocityProxy {
+    private static final int SUPPORTED_FORWARDING_VERSION = 1;
+    public static final ResourceLocation PLAYER_INFO_CHANNEL = new ResourceLocation("velocity", "player_info");
+
+    public static boolean checkIntegrity(final FriendlyByteBuf buf) {
+        final byte[] signature = new byte[32];
+        buf.readBytes(signature);
+
+        final byte[] data = new byte[buf.readableBytes()];
+        buf.getBytes(buf.readerIndex(), data);
+
+        try {
+            final Mac mac = Mac.getInstance("HmacSHA256");
+            mac.init(new SecretKeySpec(PaperConfig.velocitySecretKey, "HmacSHA256"));
+            final byte[] mySignature = mac.doFinal(data);
+            if (!MessageDigest.isEqual(signature, mySignature)) {
+                return false;
+            }
+        } catch (final InvalidKeyException | NoSuchAlgorithmException e) {
+            throw new AssertionError(e);
+        }
+
+        int version = buf.readVarInt();
+        if (version != SUPPORTED_FORWARDING_VERSION) {
+            throw new IllegalStateException("Unsupported forwarding version " + version + ", wanted " + SUPPORTED_FORWARDING_VERSION);
+        }
+
+        return true;
+    }
+
+    public static InetAddress readAddress(final FriendlyByteBuf buf) {
+        return InetAddresses.forString(buf.readUtf(Short.MAX_VALUE));
+    }
+
+    public static GameProfile createProfile(final FriendlyByteBuf buf) {
+        final GameProfile profile = new GameProfile(buf.readUUID(), buf.readUtf(16));
+        readProperties(buf, profile);
+        return profile;
+    }
+
+    private static void readProperties(final FriendlyByteBuf buf, final GameProfile profile) {
+        final int properties = buf.readVarInt();
+        for (int i1 = 0; i1 < properties; i1++) {
+            final String name = buf.readUtf(Short.MAX_VALUE);
+            final String value = buf.readUtf(Short.MAX_VALUE);
+            final String signature = buf.readBoolean() ? buf.readUtf(Short.MAX_VALUE) : null;
+            profile.getProperties().put(name, new Property(name, value, signature));
+        }
+    }
+}
+diff --git a/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
+index 1d05725374bdffad6a8ab1502ee732775345024d..a196ab2510a1c302ef1c946400c1a7c07619994a 100644
+--- a/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerLoginPacketListenerImpl.java
+@@ -18,6 +18,7 @@ import javax.crypto.Cipher;
+ import javax.crypto.SecretKey;
+ import net.minecraft.DefaultUncaughtExceptionHandler;
+ import net.minecraft.network.Connection;
+import net.minecraft.network.FriendlyByteBuf;
+ import net.minecraft.network.chat.Component;
+ import net.minecraft.network.chat.TextComponent;
+ import net.minecraft.network.chat.TranslatableComponent;
+@@ -44,6 +45,7 @@ import org.bukkit.craftbukkit.util.Waitable;
+ import org.bukkit.event.player.AsyncPlayerPreLoginEvent;
+ import org.bukkit.event.player.PlayerPreLoginEvent;
+ // CraftBukkit end
+import io.netty.buffer.Unpooled; // Paper
+ 
+ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener {
+ 
+@@ -62,6 +64,7 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener
+     @Nullable
+     private ServerPlayer delayedAcceptPlayer;
+     public String hostname = ""; // CraftBukkit - add field
+    private int velocityLoginMessageId = -1; // Paper - Velocity support
+ 
+     public ServerLoginPacketListenerImpl(MinecraftServer server, Connection connection) {
+         this.state = ServerLoginPacketListenerImpl.State.HELLO;
+@@ -233,6 +236,14 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener
+             this.state = ServerLoginPacketListenerImpl.State.KEY;
+             this.connection.send(new ClientboundHelloPacket("", this.server.getKeyPair().getPublic().getEncoded(), this.nonce));
+         } else {
+            // Paper start - Velocity support
+            if (com.destroystokyo.paper.PaperConfig.velocitySupport) {
+                this.velocityLoginMessageId = java.util.concurrent.ThreadLocalRandom.current().nextInt();
+                net.minecraft.network.protocol.login.ClientboundCustomQueryPacket packet1 = new net.minecraft.network.protocol.login.ClientboundCustomQueryPacket(this.velocityLoginMessageId, com.destroystokyo.paper.proxy.VelocityProxy.PLAYER_INFO_CHANNEL, new FriendlyByteBuf(Unpooled.EMPTY_BUFFER));
+                this.connection.send(packet1);
+                return;
+            }
+            // Paper end
+             // Spigot start
+             // Paper start - Cache authenticator threads
+             authenticatorPool.execute(new Runnable() {
+@@ -334,6 +345,12 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener
+     public class LoginHandler {
+ 
+         public void fireEvents() throws Exception {
+                            // Paper start - Velocity support
+                            if (ServerLoginPacketListenerImpl.this.velocityLoginMessageId == -1 && com.destroystokyo.paper.PaperConfig.velocitySupport) {
+                                disconnect("This server requires you to connect with Velocity.");
+                                return;
+                            }
+                            // Paper end
+                         String playerName = ServerLoginPacketListenerImpl.this.gameProfile.getName();
+                         java.net.InetAddress address = ((java.net.InetSocketAddress) ServerLoginPacketListenerImpl.this.connection.getRemoteAddress()).getAddress();
+                         java.util.UUID uniqueId = ServerLoginPacketListenerImpl.this.gameProfile.getId();
+@@ -381,6 +398,40 @@ public class ServerLoginPacketListenerImpl implements ServerLoginPacketListener
+     // Spigot end
+ 
+     public void handleCustomQueryPacket(ServerboundCustomQueryPacket packet) {
+        // Paper start - Velocity support
+        if (com.destroystokyo.paper.PaperConfig.velocitySupport && packet.getTransactionId() == this.velocityLoginMessageId) {
+            FriendlyByteBuf buf = packet.getData();
+            if (buf == null) {
+                this.disconnect("This server requires you to connect with Velocity.");
+                return;
+            }
+
+            if (!com.destroystokyo.paper.proxy.VelocityProxy.checkIntegrity(buf)) {
+                this.disconnect("Unable to verify player details");
+                return;
+            }
+
+            java.net.SocketAddress listening = this.connection.getRemoteAddress();
+            int port = 0;
+            if (listening instanceof java.net.InetSocketAddress) {
+                port = ((java.net.InetSocketAddress) listening).getPort();
+            }
+            this.connection.address = new java.net.InetSocketAddress(com.destroystokyo.paper.proxy.VelocityProxy.readAddress(buf), port);
+
+            this.gameProfile = com.destroystokyo.paper.proxy.VelocityProxy.createProfile(buf);
+
+            // Proceed with login
+            authenticatorPool.execute(() -> {
+                try {
+                    new LoginHandler().fireEvents();
+                } catch (Exception ex) {
+                    disconnect("Failed to verify username!");
+                    server.server.getLogger().log(java.util.logging.Level.WARNING, "Exception verifying " + gameProfile.getName(), ex);
+                }
+            });
+            return;
+        }
+        // Paper end
+         this.disconnect(new TranslatableComponent("multiplayer.disconnect.unexpected_query_response"));
+     }
+ 
+diff --git a/src/main/java/org/bukkit/craftbukkit/CraftServer.java b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+index 16645b4c096936c4d5c00f335e5cdb7dd4a4e2bd..717ad1c24bbc882db8f76cfef7bf847c58914e5a 100644
+--- a/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+++ b/src/main/java/org/bukkit/craftbukkit/CraftServer.java
+@@ -683,7 +683,7 @@ public final class CraftServer implements Server {
+     @Override
+     public long getConnectionThrottle() {
+         // Spigot Start - Automatically set connection throttle for bungee configurations
+-        if (org.spigotmc.SpigotConfig.bungee) {
+        if (org.spigotmc.SpigotConfig.bungee || com.destroystokyo.paper.PaperConfig.velocitySupport) { // Paper - Velocity support
+             return -1;
+         } else {
+             return this.configuration.getInt("settings.connection-throttle");
--- a/patches/server/0278-Add-more-Witch-API.patch
+++ b/patches/server/0278-Add-more-Witch-API.patch
@ -0,0 +1,137 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: BillyGalbreath <Blake.Galbreath@GMail.com>
+Date: Fri, 12 Oct 2018 14:10:46 -0500
+Subject: [PATCH] Add more Witch API
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/monster/Witch.java b/src/main/java/net/minecraft/world/entity/monster/Witch.java
+index 5e2e8cb5eba4ba36065f07abed954b2aad022321..ee32917c9852a97c27779ea969131e6c28bbb3ac 100644
+--- a/src/main/java/net/minecraft/world/entity/monster/Witch.java
+++ b/src/main/java/net/minecraft/world/entity/monster/Witch.java
+@@ -1,5 +1,8 @@
+ package net.minecraft.world.entity.monster;
+ 
+// Paper start
+import com.destroystokyo.paper.event.entity.WitchReadyPotionEvent;
+import org.bukkit.craftbukkit.inventory.CraftItemStack;
+ import java.util.Iterator;
+ import java.util.List;
+ import java.util.UUID;
+@@ -49,7 +52,7 @@ public class Witch extends Raider implements RangedAttackMob {
+     private static final UUID SPEED_MODIFIER_DRINKING_UUID = UUID.fromString("5CD17E52-A79A-43D3-A529-90FDE04B181E");
+     private static final AttributeModifier SPEED_MODIFIER_DRINKING = new AttributeModifier(Witch.SPEED_MODIFIER_DRINKING_UUID, "Drinking speed penalty", -0.25D, AttributeModifier.Operation.ADDITION);
+     private static final EntityDataAccessor<Boolean> DATA_USING_ITEM = SynchedEntityData.defineId(Witch.class, EntityDataSerializers.BOOLEAN);
+-    private int usingTime;
+    private int usingTime; public int getPotionUseTimeLeft() { return usingTime; } public void setPotionUseTimeLeft(int timeLeft) { usingTime = timeLeft; } // Paper - OBFHELPER
+     private NearestHealableRaiderTargetGoal<Raider> healRaidersGoal;
+     private NearestAttackableWitchTargetGoal<Player> attackPlayersGoal;
+ 
+@@ -157,21 +160,24 @@ public class Witch extends Raider implements RangedAttackMob {
+                 }
+ 
+                 if (potionregistry != null) {
+-                    // Paper start
+                     ItemStack potion = PotionUtils.setPotion(new ItemStack(Items.POTION), potionregistry);
+-                    org.bukkit.inventory.ItemStack bukkitStack = com.destroystokyo.paper.event.entity.WitchReadyPotionEvent.process((org.bukkit.entity.Witch) this.getBukkitEntity(), org.bukkit.craftbukkit.inventory.CraftItemStack.asCraftMirror(potion));
+-                    this.setItemSlot(EquipmentSlot.MAINHAND, org.bukkit.craftbukkit.inventory.CraftItemStack.asNMSCopy(bukkitStack));
+                    // Paper start - logic moved into setDrinkingPotion, copy exact impl into the method and then comment out
+                    this.setDrinkingPotion(potion);
+//                    org.bukkit.inventory.ItemStack bukkitStack = com.destroystokyo.paper.event.entity.WitchReadyPotionEvent.process((org.bukkit.entity.Witch) this.getBukkitEntity(), org.bukkit.craftbukkit.inventory.CraftItemStack.asCraftMirror(potion));
+//                    this.setSlot(EnumItemSlot.MAINHAND, org.bukkit.craftbukkit.inventory.CraftItemStack.asNMSCopy(bukkitStack));
+//                    // Paper end
+//                    this.bq = this.getItemInMainHand().k();
+//                    this.v(true);
+//                    if (!this.isSilent()) {
+//                        this.world.playSound((EntityHuman) null, this.locX(), this.locY(), this.locZ(), SoundEffects.ENTITY_WITCH_DRINK, this.getSoundCategory(), 1.0F, 0.8F + this.random.nextFloat() * 0.4F);
+//                    }
+//
+//                    AttributeModifiable attributemodifiable = this.getAttributeInstance(GenericAttributes.MOVEMENT_SPEED);
+//
+//                    attributemodifiable.removeModifier(EntityWitch.bo);
+//                    attributemodifiable.b(EntityWitch.bo);
+                     // Paper end
+-                    this.usingTime = this.getMainHandItem().getUseDuration();
+-                    this.setUsingItem(true);
+-                    if (!this.isSilent()) {
+-                        this.level.playSound((Player) null, this.getX(), this.getY(), this.getZ(), SoundEvents.WITCH_DRINK, this.getSoundSource(), 1.0F, 0.8F + this.random.nextFloat() * 0.4F);
+-                    }
+-
+-                    AttributeInstance attributemodifiable = this.getAttribute(Attributes.MOVEMENT_SPEED);
+ 
+-                    attributemodifiable.removeModifier(Witch.SPEED_MODIFIER_DRINKING);
+-                    attributemodifiable.addTransientModifier(Witch.SPEED_MODIFIER_DRINKING);
+                 }
+             }
+ 
+@@ -183,6 +189,24 @@ public class Witch extends Raider implements RangedAttackMob {
+         super.aiStep();
+     }
+ 
+    // Paper start - moved to its own method
+    public void setDrinkingPotion(ItemStack potion) {
+        org.bukkit.inventory.ItemStack bukkitStack = com.destroystokyo.paper.event.entity.WitchReadyPotionEvent.process((org.bukkit.entity.Witch) this.getBukkitEntity(), org.bukkit.craftbukkit.inventory.CraftItemStack.asCraftMirror(potion));
+        this.setItemSlot(EquipmentSlot.MAINHAND, org.bukkit.craftbukkit.inventory.CraftItemStack.asNMSCopy(bukkitStack));
+        // Paper end
+        this.usingTime = this.getMainHandItem().getUseDuration();
+        this.setUsingItem(true);
+        if (!this.isSilent()) {
+            this.level.playSound((Player) null, this.getX(), this.getY(), this.getZ(), SoundEvents.WITCH_DRINK, this.getSoundSource(), 1.0F, 0.8F + this.random.nextFloat() * 0.4F);
+        }
+
+        AttributeInstance attributemodifiable = this.getAttribute(Attributes.MOVEMENT_SPEED);
+
+        attributemodifiable.removeModifier(Witch.SPEED_MODIFIER_DRINKING);
+        attributemodifiable.addTransientModifier(Witch.SPEED_MODIFIER_DRINKING);
+    }
+    // Paper end
+
+     @Override
+     public SoundEvent getCelebrateSound() {
+         return SoundEvents.WITCH_CELEBRATE;
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftWitch.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftWitch.java
+index d4eeb071dbbfca3ecea256228853bcb5c11f49ee..bb40b5af0f2a6a971f78350394099e3a48d5d04a 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftWitch.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftWitch.java
+@@ -3,6 +3,13 @@ package org.bukkit.craftbukkit.entity;
+ import org.bukkit.craftbukkit.CraftServer;
+ import org.bukkit.entity.EntityType;
+ import org.bukkit.entity.Witch;
+// Paper start
+import com.destroystokyo.paper.entity.CraftRangedEntity;
+import com.google.common.base.Preconditions;
+import org.bukkit.Material;
+import org.bukkit.craftbukkit.inventory.CraftItemStack;
+import org.bukkit.inventory.ItemStack;
+// Paper end
+ 
+ public class CraftWitch extends CraftRaider implements Witch, com.destroystokyo.paper.entity.CraftRangedEntity<net.minecraft.world.entity.monster.Witch> { // Paper
+     public CraftWitch(CraftServer server, net.minecraft.world.entity.monster.Witch entity) {
+@@ -23,4 +30,28 @@ public class CraftWitch extends CraftRaider implements Witch, com.destroystokyo.
+     public EntityType getType() {
+         return EntityType.WITCH;
+     }
+
+    // Paper start
+    public boolean isDrinkingPotion() {
+        return getHandle().isDrinkingPotion();
+    }
+
+    public int getPotionUseTimeLeft() {
+        return getHandle().getPotionUseTimeLeft();
+    }
+
+    @Override
+    public void setPotionUseTimeLeft(int ticks) {
+        getHandle().setPotionUseTimeLeft(ticks);
+    }
+
+    public ItemStack getDrinkingPotion() {
+        return CraftItemStack.asCraftMirror(getHandle().getMainHandItem());
+    }
+
+    public void setDrinkingPotion(ItemStack potion) {
+        Preconditions.checkArgument(potion == null || potion.getType().isEmpty() || potion.getType() == Material.POTION, "must be potion, air, or null");
+        getHandle().setDrinkingPotion(CraftItemStack.asNMSCopy(potion));
+    }
+    // Paper end
+ }
--- a/patches/server/0279-Check-Drowned-for-Villager-Aggression-Config.patch
+++ b/patches/server/0279-Check-Drowned-for-Villager-Aggression-Config.patch
@ -0,0 +1,19 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: BillyGalbreath <Blake.Galbreath@GMail.com>
+Date: Wed, 10 Oct 2018 21:22:44 -0500
+Subject: [PATCH] Check Drowned for Villager Aggression Config
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/monster/Drowned.java b/src/main/java/net/minecraft/world/entity/monster/Drowned.java
+index bacc065a9ce619fb0ac15b61cc5032c6bec00019..50228e59d629e75e97d23bd3ec92088f75480827 100644
+--- a/src/main/java/net/minecraft/world/entity/monster/Drowned.java
+++ b/src/main/java/net/minecraft/world/entity/monster/Drowned.java
+@@ -79,7 +79,7 @@ public class Drowned extends Zombie implements RangedAttackMob {
+         this.goalSelector.addGoal(7, new RandomStrollGoal(this, 1.0D));
+         this.targetSelector.addGoal(1, (new HurtByTargetGoal(this, Drowned.class)).setAlertOthers(ZombifiedPiglin.class));
+         this.targetSelector.addGoal(2, new NearestAttackableTargetGoal<>(this, Player.class, 10, true, false, this::okTarget));
+-        this.targetSelector.addGoal(3, new NearestAttackableTargetGoal<>(this, AbstractVillager.class, false));
+        if (this.level.spigotConfig.zombieAggressiveTowardsVillager) this.targetSelector.addGoal(3, new NearestAttackableTargetGoal<>(this, AbstractVillager.class, false)); // Paper
+         this.targetSelector.addGoal(3, new NearestAttackableTargetGoal<>(this, IronGolem.class, true));
+         this.targetSelector.addGoal(3, new NearestAttackableTargetGoal<>(this, Axolotl.class, true, false));
+         this.targetSelector.addGoal(5, new NearestAttackableTargetGoal<>(this, Turtle.class, 10, true, false, Turtle.BABY_ON_LAND_SELECTOR));
--- a/patches/server/0280-Here-s-Johnny.patch
+++ b/patches/server/0280-Here-s-Johnny.patch
@ -0,0 +1,38 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: BillyGalbreath <Blake.Galbreath@GMail.com>
+Date: Fri, 12 Oct 2018 01:37:22 -0500
+Subject: [PATCH] Here's Johnny!
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/monster/Vindicator.java b/src/main/java/net/minecraft/world/entity/monster/Vindicator.java
+index aaeb82575ce0a3dac7c4e413fb782925573894d7..dcaec42b0756cf36da813815b4a54e4d6c4e293a 100644
+--- a/src/main/java/net/minecraft/world/entity/monster/Vindicator.java
+++ b/src/main/java/net/minecraft/world/entity/monster/Vindicator.java
+@@ -51,7 +51,7 @@ public class Vindicator extends AbstractIllager {
+     static final Predicate<Difficulty> DOOR_BREAKING_PREDICATE = (difficulty) -> {
+         return difficulty == Difficulty.NORMAL || difficulty == Difficulty.HARD;
+     };
+-    boolean isJohnny;
+    private boolean isJohnny; public boolean isJohnny() { return this.isJohnny; } public void setJohnny(boolean johnny) { this.isJohnny = johnny; } // Paper - OBFHELPER
+ 
+     public Vindicator(EntityType<? extends Vindicator> type, Level world) {
+         super(type, world);
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftVindicator.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftVindicator.java
+index 3c5994e9862e5caa257ee6a21f8fba2df39c98c5..6c1569340317f7bed39eaf6e858d602234993eb3 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftVindicator.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftVindicator.java
+@@ -24,4 +24,14 @@ public class CraftVindicator extends CraftIllager implements Vindicator {
+     public EntityType getType() {
+         return EntityType.VINDICATOR;
+     }
+
+    // Paper start
+    public boolean isJohnny() {
+        return getHandle().isJohnny();
+    }
+
+    public void setJohnny(boolean johnny) {
+        getHandle().setJohnny(johnny);
+    }
+    // Paper end
+ }
--- a/patches/server/0281-Add-option-to-prevent-players-from-moving-into-unloa.patch
+++ b/patches/server/0281-Add-option-to-prevent-players-from-moving-into-unloa.patch
@ -0,0 +1,64 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Gabriele C <sgdc3.mail@gmail.com>
+Date: Mon, 22 Oct 2018 17:34:10 +0200
+Subject: [PATCH] Add option to prevent players from moving into unloaded
+ chunks #1551
+
+
+diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+index c17c504acdc12b6ef37d6643eb98a57fa5ca40c9..13e730b18c346934c061fb570048623ad66e7344 100644
+--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+@@ -390,4 +390,9 @@ public class PaperWorldConfig {
+         waterOverLavaFlowSpeed = getInt("water-over-lava-flow-speed", 5);
+         log("Water over lava flow speed: " + waterOverLavaFlowSpeed);
+     }
+
+    public boolean preventMovingIntoUnloadedChunks = false;
+    private void preventMovingIntoUnloadedChunks() {
+        preventMovingIntoUnloadedChunks = getBoolean("prevent-moving-into-unloaded-chunks", false);
+    }
+ }
+diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+index 06922b26ca1f2e31f7c8a527f1a8fdda4a8554c0..5f4718fa42be0ade1a40c0472efbbd0c65f061a7 100644
+--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
+@@ -532,6 +532,13 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
+                 }
+                 speed *= 2f; // TODO: Get the speed of the vehicle instead of the player
+ 
+                // Paper start - Prevent moving into unloaded chunks
+                if (player.level.paperConfig.preventMovingIntoUnloadedChunks && worldserver.getChunkIfLoadedImmediately((int) Math.floor(packet.getX()) >> 4, (int) Math.floor(packet.getZ()) >> 4) == null) {
+                    this.connection.send(new ClientboundMoveVehiclePacket(entity));
+                    return;
+                }
+                // Paper end
+
+                 if (d10 - d9 > Math.max(100.0D, Math.pow((double) (org.spigotmc.SpigotConfig.movedTooQuicklyMultiplier * (float) i * speed), 2)) && !this.isSingleplayerOwner()) {
+                 // CraftBukkit end
+                     ServerGamePacketListenerImpl.LOGGER.warn("{} (vehicle of {}) moved too quickly! {},{},{}", entity.getName().getString(), this.player.getName().getString(), d6, d7, d8);
+@@ -1168,9 +1175,9 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
+                         float prevYaw = this.player.getYRot();
+                         float prevPitch = this.player.getXRot();
+                         // CraftBukkit end
+-                        double d3 = this.player.getX();
+                        double d3 = this.player.getX(); final double toX = d3; // Paper - OBFHELPER
+                         double d4 = this.player.getY();
+-                        double d5 = this.player.getZ();
+                        double d5 = this.player.getZ(); final double toZ = d5; // Paper - OBFHELPER
+                         double d6 = this.player.getY();
+                         double d7 = d0 - this.firstGoodX;
+                         double d8 = d1 - this.firstGoodY;
+@@ -1208,6 +1215,12 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
+                             } else {
+                                 speed = this.player.getAbilities().walkingSpeed * 10f;
+                             }
+                            // Paper start - Prevent moving into unloaded chunks
+                            if (player.level.paperConfig.preventMovingIntoUnloadedChunks && (this.player.getX() != toX || this.player.getZ() != toZ) && !worldserver.hasChunk((int) Math.floor(toX) >> 4, (int) Math.floor(toZ) >> 4)) {
+                                this.internalTeleport(this.player.getX(), this.player.getY(), this.player.getZ(), this.player.getYRot(), this.player.getXRot(), Collections.emptySet(), true);
+                                return;
+                            }
+                            // Paper end
+ 
+                             if (!this.player.isChangingDimension() && (!this.player.getLevel().getGameRules().getBoolean(GameRules.RULE_DISABLE_ELYTRA_MOVEMENT_CHECK) || !this.player.isFallFlying())) {
+                                 float f2 = this.player.isFallFlying() ? 300.0F : 100.0F;