Paper/Spigot-Server-Patches/0116-Fix-Bugs-with-Spigot-Mob-Spawn-Logic.patch
Aikar 5d8b3d4969
Fix placement of chunk tracking - Fixes #1199
Spigot had code that returned early in chunk add/remove methods.

This was causing our code added to set current chunks and counts to
be skipped over if the entity was default not persistent but made persistent.

This was the source of many issues

Fixes #1208
2018-07-15 02:44:37 -04:00

62 lines
2.9 KiB
Diff

From f7b327727e2ac3ad221592ae2b97c64d9297c702 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
index da7b59434..1157bc7eb 100644
--- a/src/main/java/net/minecraft/server/Chunk.java
+++ b/src/main/java/net/minecraft/server/Chunk.java
@@ -714,8 +714,8 @@ public class Chunk {
i = this.entitySlices.length - 1;
}
- this.entitySlices[i].remove(entity);
// Paper start
+ if (!this.entitySlices[i].remove(entity)) { return; }
entity.setCurrentChunk(null);
entityCounts.decrement(entity.entityKeyString);
if (entity instanceof EntityItem) {
diff --git a/src/main/java/net/minecraft/server/SpawnerCreature.java b/src/main/java/net/minecraft/server/SpawnerCreature.java
index 45a83ae99..ed22607d9 100644
--- a/src/main/java/net/minecraft/server/SpawnerCreature.java
+++ b/src/main/java/net/minecraft/server/SpawnerCreature.java
@@ -23,6 +23,15 @@ 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) {
+ int sum = 0;
+ for (Chunk c : server.getChunkProviderServer().chunks.values()) {
+ sum += c.entityCount.get(oClass);
+ }
+ return sum;
+ }
+ // 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();
--
2.18.0