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papermc/Spigot-Server-Patches/0152-Improve-Maps-in-item-frames-performance-and-bug-fixe.patch
Aikar 5aa3237a21 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.
2016-04-29 20:04:12 -04:00

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From 5b8c37f48e7bb8fbe2e82e2a3f299d44b1ed414f 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/EntityHuman.java b/src/main/java/net/minecraft/server/EntityHuman.java
index 767c384..03f1a1d 100644
--- a/src/main/java/net/minecraft/server/EntityHuman.java
+++ b/src/main/java/net/minecraft/server/EntityHuman.java
@@ -585,6 +585,12 @@ public abstract class EntityHuman extends EntityLiving {
return null;
}
// CraftBukkit end
+ // Paper start - remove player from map on drop
+ if (itemstack.getItem() == Items.FILLED_MAP) {
+ WorldMap worldmap = Items.FILLED_MAP.getSavedMap(itemstack, this.world);
+ worldmap.updateSeenPlayers(this, itemstack);
+ }
+ // Paper stop
ItemStack itemstack1 = this.a(entityitem);
diff --git a/src/main/java/net/minecraft/server/EntityTrackerEntry.java b/src/main/java/net/minecraft/server/EntityTrackerEntry.java
index 1602dff..a012d20 100644
--- a/src/main/java/net/minecraft/server/EntityTrackerEntry.java
+++ b/src/main/java/net/minecraft/server/EntityTrackerEntry.java
@@ -90,11 +90,11 @@ public class EntityTrackerEntry {
}
// PAIL : rename
- if (this.tracker instanceof EntityItemFrame /*&& this.a % 10 == 0*/) { // CraftBukkit - Moved below, should always enter this block
+ if (this.tracker instanceof EntityItemFrame && this.a % 20 == 0) { // Paper
EntityItemFrame entityitemframe = (EntityItemFrame) this.tracker;
ItemStack itemstack = entityitemframe.getItem();
- if (this.a % 10 == 0 && itemstack != null && itemstack.getItem() instanceof ItemWorldMap) { // CraftBukkit - Moved this.m % 10 logic here so item frames do not enter the other blocks
+ if (itemstack != null && itemstack.getItem() instanceof ItemWorldMap) { // Paper - moved back up
WorldMap worldmap = Items.FILLED_MAP.getSavedMap(itemstack, this.tracker.world);
Iterator iterator = this.trackedPlayers.iterator(); // CraftBukkit
diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index a8ea92c..c453981 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -1151,6 +1151,7 @@ public abstract class World implements IBlockAccess {
{
if ( iter.next().trackee == entity )
{
+ map.decorations.remove(entity.getUniqueID()); // Paper
iter.remove();
}
}
diff --git a/src/main/java/net/minecraft/server/WorldMap.java b/src/main/java/net/minecraft/server/WorldMap.java
index e090fea..2fe7402 100644
--- a/src/main/java/net/minecraft/server/WorldMap.java
+++ b/src/main/java/net/minecraft/server/WorldMap.java
@@ -26,6 +26,7 @@ public class WorldMap extends PersistentBase {
public List<WorldMap.WorldMapHumanTracker> h = Lists.newArrayList();
public Map<EntityHuman, WorldMap.WorldMapHumanTracker> j = Maps.newHashMap(); // Spigot
public Map<UUID, MapIcon> decorations = Maps.newLinkedHashMap(); // Spigot
+ private org.bukkit.craftbukkit.map.RenderData vanillaRender = new org.bukkit.craftbukkit.map.RenderData(); // Paper
// CraftBukkit start
public final CraftMapView mapView;
@@ -38,6 +39,7 @@ public class WorldMap extends PersistentBase {
// CraftBukkit start
mapView = new CraftMapView(this);
server = (CraftServer) org.bukkit.Bukkit.getServer();
+ vanillaRender.buffer = colors; // Paper
// CraftBukkit end
}
@@ -111,6 +113,7 @@ public class WorldMap extends PersistentBase {
}
}
}
+ vanillaRender.buffer = colors; // Paper
}
@@ -144,6 +147,7 @@ public class WorldMap extends PersistentBase {
nbttagcompound.setBoolean("trackingPosition", this.track);
}
+ public void updateSeenPlayers(EntityHuman entityhuman, ItemStack itemstack) { a(entityhuman, itemstack); } // Paper // OBFHELPER
public void a(EntityHuman entityhuman, ItemStack itemstack) {
if (!this.j.containsKey(entityhuman)) {
WorldMap.WorldMapHumanTracker worldmap_worldmaphumantracker = new WorldMap.WorldMapHumanTracker(entityhuman);
@@ -270,6 +274,21 @@ public class WorldMap extends PersistentBase {
public class WorldMapHumanTracker {
+ // Paper start
+ private void addSeenPlayers(java.util.Collection<MapIcon> icons) {
+ org.bukkit.entity.Player player = (org.bukkit.entity.Player) trackee.getBukkitEntity();
+ WorldMap.this.decorations.forEach((uuid, mapIcon) -> {
+ // If this cursor is for a player check visibility with vanish system
+ org.bukkit.entity.Player other = org.bukkit.Bukkit.getPlayer(uuid); // 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 stop
public final EntityHuman trackee;
private boolean d = true;
private int e = 0;
@@ -285,9 +304,12 @@ public class WorldMap extends PersistentBase {
public Packet<?> a(ItemStack itemstack) {
// CraftBukkit start
- org.bukkit.craftbukkit.map.RenderData render = WorldMap.this.mapView.render((org.bukkit.craftbukkit.entity.CraftPlayer) this.trackee.getBukkitEntity()); // CraftBukkit
+ if (!this.d && this.i % 5 != 0) { this.i++; 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 ? WorldMap.this.mapView.render((org.bukkit.craftbukkit.entity.CraftPlayer) this.trackee.getBukkitEntity()) : WorldMap.this.vanillaRender; // CraftBukkit // Paper
java.util.Collection<MapIcon> icons = new java.util.ArrayList<MapIcon>();
+ if (vanillaMaps) addSeenPlayers(icons); // Paper
for ( org.bukkit.map.MapCursor cursor : render.cursors) {
diff --git a/src/main/java/org/bukkit/craftbukkit/map/RenderData.java b/src/main/java/org/bukkit/craftbukkit/map/RenderData.java
index 256a131..5768cd5 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() {
--
2.8.1
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