From d52b2472e42eb743873629aedbaa402a4d4bc9fc Mon Sep 17 00:00:00 2001 From: Ammar Askar Date: Sat, 3 Aug 2013 21:42:00 +0500 Subject: [PATCH] Guard entity list diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java index 06759cd..cb21133 100644 --- a/src/main/java/net/minecraft/server/World.java +++ b/src/main/java/net/minecraft/server/World.java @@ -29,7 +29,25 @@ import org.bukkit.event.weather.ThunderChangeEvent; public abstract class World implements IBlockAccess { public boolean d; - public List entityList = new ArrayList(); + public List entityList = new ArrayList() { // Spigot start - guard entity list from removals + @Override + public Object remove(int index) { + guard(); + return super.remove(index); + } + + @Override + public boolean remove(Object o) { + guard(); + return super.remove(o); + } + + private void guard() { + if (guardEntityList) { + throw new java.util.ConcurrentModificationException(); + } + } + }; // Spigot end protected List f = new ArrayList(); public Set tileEntityList = new HashSet(); // CraftBukkit - ArrayList -> HashSet private List a = new ArrayList(); @@ -74,6 +92,7 @@ public abstract class World implements IBlockAccess { int[] H; public boolean isStatic; // Spigot start + private boolean guardEntityList = false; protected final gnu.trove.map.hash.TLongShortHashMap chunkTickList; protected float growthOdds = 100; protected float modifiedOdds = 100; @@ -1285,6 +1304,7 @@ public abstract class World implements IBlockAccess { org.spigotmc.ActivationRange.activateEntities(this); // Spigot timings.entityTick.startTiming(); // Spigot + guardEntityList = true; // Spigot for (i = 0; i < this.entityList.size(); ++i) { entity = (Entity) this.entityList.get(i); @@ -1332,12 +1352,15 @@ public abstract class World implements IBlockAccess { this.getChunkAt(j, k).b(entity); } + guardEntityList = false; // Spigot this.entityList.remove(i--); + guardEntityList = true; // Spigot this.b(entity); } this.methodProfiler.b(); } + guardEntityList = false; // Spigot timings.entityTick.stopTiming(); // Spigot this.methodProfiler.c("tileEntities"); -- 1.8.1.2