From 037d74366dc04180af0676da0c4c4ecbf09046fc 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 b09220f..29907b2 100644 --- a/src/main/java/net/minecraft/server/World.java +++ b/src/main/java/net/minecraft/server/World.java @@ -30,7 +30,25 @@ 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(); @@ -77,6 +95,7 @@ public abstract class World implements IBlockAccess { int[] I; // Spigot start + private boolean guardEntityList = false; protected final gnu.trove.map.hash.TLongShortHashMap chunkTickList; protected float growthOdds = 100; protected float modifiedOdds = 100; @@ -1257,6 +1276,7 @@ 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); @@ -1304,12 +1324,15 @@ 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("blockEntities"); -- 1.8.3.2