From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Beech Horn <beechhorn@gmail.com>
Date: Fri, 14 Feb 2020 19:39:59 +0000
Subject: [PATCH] Skip distance map update when spawning disabled.


diff --git a/src/main/java/net/minecraft/server/level/ServerChunkCache.java b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
index 8c15f7821864032319665f9fc5183f302856637e..3613d09a88b283d693ca0e39117e8337d6e4b034 100644
--- a/src/main/java/net/minecraft/server/level/ServerChunkCache.java
+++ b/src/main/java/net/minecraft/server/level/ServerChunkCache.java
@@ -810,7 +810,7 @@ public class ServerChunkCache extends ChunkSource {
             int l = this.distanceManager.getNaturalSpawnChunkCount();
             // Paper start - per player mob spawning
             NaturalSpawner.SpawnState spawnercreature_d; // moved down
-            if (this.chunkMap.playerMobDistanceMap != null) {
+            if ((this.spawnFriendlies || this.spawnEnemies) && this.chunkMap.playerMobDistanceMap != null) { // don't update when animals and monsters are disabled
                 // update distance map
                 this.level.timings.playerMobDistanceMapUpdate.startTiming();
                 this.chunkMap.playerMobDistanceMap.update(this.level.players, this.chunkMap.viewDistance);