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Paper/Spigot-Server-Patches/0133-Fix-Bugs-with-Spigot-Mob-Spawn-Logic.patch

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2016-05-12 04:07:46 +02:00
From 8b6deba310ca28fe576b153349c97cb9aaab5f65 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Thu, 14 Apr 2016 21:01:39 -0400
Subject: [PATCH] Fix Bugs with Spigot Mob Spawn Logic
Spigot drastically altered vanilla mob spawn logic and caused a few issues.
1) Used only spawnable chunks vs entire world for entity counting, resulting in ignoring
other entities in the world, and causing the world to go over its intended limit.
Specially with servers using smaller mob spawn ranges than view distance, as well as affects spawning API
2) Spigot was using 16x16 division instead of vanilla 17x17 division.
This patch returns mob counting to use all loaded chunks, and 17x17 division.
diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
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index f7452b3..773b153 100644
--- a/src/main/java/net/minecraft/server/Chunk.java
+++ b/src/main/java/net/minecraft/server/Chunk.java
@@ -704,7 +704,7 @@ public class Chunk {
i = this.entitySlices.length - 1;
}
- this.entitySlices[i].remove(entity);
+ if (!this.entitySlices[i].remove(entity)) { return; } // Paper
// Paper start - update counts
if (entity instanceof EntityItem) {
itemCounts[i]--;
diff --git a/src/main/java/net/minecraft/server/SpawnerCreature.java b/src/main/java/net/minecraft/server/SpawnerCreature.java
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index 9fd0473..a034db2 100644
--- a/src/main/java/net/minecraft/server/SpawnerCreature.java
+++ b/src/main/java/net/minecraft/server/SpawnerCreature.java
@@ -21,6 +21,15 @@ public final class SpawnerCreature {
// Spigot start - get entity count only from chunks being processed in b
private int getEntityCount(WorldServer server, Class oClass)
{
+ // Paper start - use entire world, not just active chunks. Spigot broke vanilla expectations.
+ if (true) {
+ return server
+ .getChunkProviderServer()
+ .chunks.values()
+ .stream()
+ .collect(java.util.stream.Collectors.summingInt(c -> c.entityCount.get(oClass)));
+ }
+ // Paper end
int i = 0;
Iterator<Long> it = this.b.iterator();
while ( it.hasNext() )
@@ -126,7 +135,7 @@ public final class SpawnerCreature {
int l1 = limit * i / a; // CraftBukkit - use per-world limits
*/ // Paper end
- if ((mobcnt = getEntityCount(worldserver, enumcreaturetype.a())) <= limit * i / 256) {
+ if ((mobcnt = getEntityCount(worldserver, enumcreaturetype.a())) <= limit * i / 289) { // Paper - use 17x17 like vanilla (a at top of file)
BlockPosition.MutableBlockPosition blockposition_mutableblockposition = new BlockPosition.MutableBlockPosition();
Iterator iterator1 = this.b.iterator();
--
2016-05-12 04:07:46 +02:00
2.8.2