Prevent mob spawning from loading chunks

Spigot-Server-Patches/0369-Prevent-mob-spawning-from-loading-generating-chunks.patch

@@ -0,0 +1,31 @@
+From d25983b197588722513fd00867c2f83fdec9f682 Mon Sep 17 00:00:00 2001
+From: Aikar <aikar@aikar.co>
+Date: Wed, 12 Sep 2018 21:12:57 -0400
+Subject: [PATCH] Prevent mob spawning from loading/generating chunks
+
+
+diff --git a/src/main/java/net/minecraft/server/SpawnerCreature.java b/src/main/java/net/minecraft/server/SpawnerCreature.java
+index 387570ed67..0661ea20d8 100644
+--- a/src/main/java/net/minecraft/server/SpawnerCreature.java
++++ b/src/main/java/net/minecraft/server/SpawnerCreature.java
+@@ -129,7 +129,8 @@ public final class SpawnerCreature {
+                             int i2 = blockposition1.getX();
+                             int j2 = blockposition1.getY();
+                             int k2 = blockposition1.getZ();
+-                            IBlockData iblockdata = worldserver.getType(blockposition1);
++                            IBlockData iblockdata = worldserver.getTypeIfLoaded(blockposition1);  // Paper - don't load chunks for mob spawn
++                            if (iblockdata == null) continue; // Paper - don't load chunks for mob spawn
+ 
+                             if (!iblockdata.isOccluding()) {
+                                 int l2 = 0;
+@@ -168,6 +169,7 @@ public final class SpawnerCreature {
+                                                     }
+ 
+                                                     if (worldserver.a(enumcreaturetype, biomebase_biomemeta, (BlockPosition) blockposition_mutableblockposition)) {
++                                                        if (!worldserver.isLoaded(blockposition_mutableblockposition)) continue; // Paper - don't load chunks for mob spawn
+                                                         EntityPositionTypes.Surface entitypositiontypes_surface = EntityPositionTypes.a(biomebase_biomemeta.b);
+                                                         if (entitypositiontypes_surface != null && a(entitypositiontypes_surface, worldserver, blockposition_mutableblockposition, biomebase_biomemeta.b)) {
+                                                             EntityInsentient entityinsentient;
+-- 
+2.18.0
+