From b1bfe7b55f33db5a9d68169f7e0a3503cad066ff Mon Sep 17 00:00:00 2001
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
Date: Sun, 12 May 2024 04:02:09 -0700
Subject: [PATCH] Properly use WorldGenRegion structure manager for swamp hut
 cat generation

Fixes a crash when attempting to retrieve the chunk data,
as Folia does not support off-region sync chunk loads.

Fixes https://github.com/PaperMC/Folia/issues/221
---
 patches/server/0003-Threaded-Regions.patch | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/patches/server/0003-Threaded-Regions.patch b/patches/server/0003-Threaded-Regions.patch
index cef2974e6..3488190ca 100644
--- a/patches/server/0003-Threaded-Regions.patch
+++ b/patches/server/0003-Threaded-Regions.patch
@@ -18028,7 +18028,7 @@ index 0dfb8109fd8c022b079da00f6a0e3fc85b57bf7a..cdc431ab27b1837b852c8fb559d0324b
          }
  
 diff --git a/src/main/java/net/minecraft/world/entity/animal/Cat.java b/src/main/java/net/minecraft/world/entity/animal/Cat.java
-index 07559b9629d4ecb40b511256f400a781e39820e0..6d24e4efeda9265a1b02c807dbed96b7db765424 100644
+index 07559b9629d4ecb40b511256f400a781e39820e0..1cd5f0178c016736ebaf0f4449262da680cc2fab 100644
 --- a/src/main/java/net/minecraft/world/entity/animal/Cat.java
 +++ b/src/main/java/net/minecraft/world/entity/animal/Cat.java
 @@ -367,7 +367,7 @@ public class Cat extends TamableAnimal implements VariantHolder<Holder<CatVarian
@@ -18036,7 +18036,7 @@ index 07559b9629d4ecb40b511256f400a781e39820e0..6d24e4efeda9265a1b02c807dbed96b7
          ServerLevel worldserver = world.getLevel();
  
 -        if (worldserver.structureManager().getStructureWithPieceAt(this.blockPosition(), StructureTags.CATS_SPAWN_AS_BLACK, world).isValid()) { // Paper - Fix swamp hut cat generation deadlock
-+        if (worldserver.structureManager().getStructureWithPieceAt(this.blockPosition(), StructureTags.CATS_SPAWN_AS_BLACK).isValid()) { // Paper - Fix swamp hut cat generation deadlock // Folia - region threading - properly fix this
++        if (world.structureManager().getStructureWithPieceAt(this.blockPosition(), StructureTags.CATS_SPAWN_AS_BLACK).isValid()) { // Paper - Fix swamp hut cat generation deadlock // Folia - region threading - properly fix this
              this.setVariant((Holder) BuiltInRegistries.CAT_VARIANT.getHolderOrThrow(CatVariant.ALL_BLACK));
              this.setPersistenceRequired();
          }