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845090e570
If a plugin hacks into NMS and triggers entity removal, it could result in an entity being attempted to remove from the chunk twice. The 2nd pass will return false, as it did not find the entity in the list. We should not touch entity counts if the entity was not removed, to avoid going negative.
61 lines
2.9 KiB
Diff
61 lines
2.9 KiB
Diff
From e4e4bb6ea35b2bf711d57c1f9f694c366a6fa105 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Thu, 14 Apr 2016 21:01:39 -0400
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Subject: [PATCH] Fix Bugs with Spigot Mob Spawn Logic
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Spigot drastically altered vanilla mob spawn logic and caused a few issues.
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1) Used only spawnable chunks vs entire world for entity counting, resulting in ignoring
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other entities in the world, and causing the world to go over its intended limit.
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Specially with servers using smaller mob spawn ranges than view distance, as well as affects spawning API
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2) Spigot was using 16x16 division instead of vanilla 17x17 division.
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This patch returns mob counting to use all loaded chunks, and 17x17 division.
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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 9334a0a..5c1685d 100644
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--- a/src/main/java/net/minecraft/server/Chunk.java
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+++ b/src/main/java/net/minecraft/server/Chunk.java
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@@ -704,7 +704,7 @@ public class Chunk {
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i = this.entitySlices.length - 1;
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}
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- this.entitySlices[i].remove(entity);
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+ if (!this.entitySlices[i].remove(entity)) { return; } // Paper
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// Paper start - update counts
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if (entity instanceof EntityItem) {
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itemCounts[i]--;
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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 15a0ce9..b47feb2 100644
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--- a/src/main/java/net/minecraft/server/SpawnerCreature.java
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+++ b/src/main/java/net/minecraft/server/SpawnerCreature.java
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@@ -21,6 +21,15 @@ public final class SpawnerCreature {
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// Spigot start - get entity count only from chunks being processed in b
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private int getEntityCount(WorldServer server, Class oClass)
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{
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+ // Paper start - use entire world, not just active chunks. Spigot broke vanilla expectations.
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+ if (true) {
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+ return server
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+ .getChunkProviderServer()
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+ .chunks.values()
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+ .stream()
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+ .collect(java.util.stream.Collectors.summingInt(c -> c.entityCount.get(oClass)));
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+ }
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+ // Paper end
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int i = 0;
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Iterator<Long> it = this.b.iterator();
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while ( it.hasNext() )
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@@ -126,7 +135,7 @@ public final class SpawnerCreature {
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int l1 = limit * i / a; // CraftBukkit - use per-world limits
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*/ // Paper end
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- if ((mobcnt = getEntityCount(worldserver, enumcreaturetype.a())) <= limit * i / 256) {
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+ if ((mobcnt = getEntityCount(worldserver, enumcreaturetype.a())) <= limit * i / 289) { // Paper - use 17x17 like vanilla (a at top of file)
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BlockPosition.MutableBlockPosition blockposition_mutableblockposition = new BlockPosition.MutableBlockPosition();
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Iterator iterator1 = this.b.iterator();
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--
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2.8.1
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