PaperMC/CraftBukkit-Patches/0069-Cap-Entity-Collisions.patch

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From c055436cae43c418f24f4238d0faa39e761c0de2 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Fri, 31 Jan 2014 11:18:34 -0500
Subject: [PATCH] Cap Entity Collisions
Limit a single entity to colliding a max of configurable times per tick.
This will alleviate issues where living entities are hoarded in 1x1 pens.
diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
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index eb552e2..5702cb0 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
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@@ -147,6 +147,7 @@ public abstract class Entity implements ICommandListener {
public long activatedTick = Integer.MIN_VALUE;
public boolean fromMobSpawner;
public void inactiveTick() { }
+ protected int numCollisions = 0;
// Spigot end
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public Entity(World world) {
diff --git a/src/main/java/net/minecraft/server/EntityLiving.java b/src/main/java/net/minecraft/server/EntityLiving.java
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index c2f5ee1..b410f3b 100644
--- a/src/main/java/net/minecraft/server/EntityLiving.java
+++ b/src/main/java/net/minecraft/server/EntityLiving.java
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@@ -1967,7 +1967,8 @@ public abstract class EntityLiving extends Entity {
List list = this.world.a((Entity) this, this.getBoundingBox(), IEntitySelector.a(this));
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if (this.isInteractable() && !list.isEmpty()) { // Spigot: Add isInteractable() condition
- for (int i = 0; i < list.size(); ++i) {
+ numCollisions -= world.spigotConfig.maxCollisionsPerEntity; // Spigot
+ for (int i = 0; i < list.size() && numCollisions < world.spigotConfig.maxCollisionsPerEntity; ++i) {
Entity entity = (Entity) list.get(i);
// TODO better check now?
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// CraftBukkit start - Only handle mob (non-player) collisions every other tick
@@ -1976,7 +1977,8 @@ public abstract class EntityLiving extends Entity {
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}
// CraftBukkit end
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-
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+ entity.numCollisions++; // Spigot
+ numCollisions++; // Spigot
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this.C(entity);
}
}
diff --git a/src/main/java/org/spigotmc/SpigotWorldConfig.java b/src/main/java/org/spigotmc/SpigotWorldConfig.java
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index 4cca76a..19525eb 100644
--- a/src/main/java/org/spigotmc/SpigotWorldConfig.java
+++ b/src/main/java/org/spigotmc/SpigotWorldConfig.java
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@@ -224,4 +224,11 @@ public class SpigotWorldConfig
enableZombiePigmenPortalSpawns = getBoolean( "enable-zombie-pigmen-portal-spawns", true );
log( "Allow Zombie Pigmen to spawn from portal blocks: " + enableZombiePigmenPortalSpawns );
}
+
+ public int maxCollisionsPerEntity;
+ private void maxEntityCollision()
+ {
+ maxCollisionsPerEntity = getInt( "max-entity-collisions", 8 );
+ log( "Max Entity Collisions: " + maxCollisionsPerEntity );
+ }
}
--
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2.5.0