From f036934dbb60602665a5cc897bccc7b912090f2f Mon Sep 17 00:00:00 2001
From: ACGaming <4818419+ACGaming@users.noreply.github.com>
Date: Wed, 19 Jun 2024 15:38:44 +0200
Subject: [PATCH] Handle already unloaded dimensions, fix #403

---
 .../tweaks/world/loading/UTUnloader.java           | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/src/main/java/mod/acgaming/universaltweaks/tweaks/world/loading/UTUnloader.java b/src/main/java/mod/acgaming/universaltweaks/tweaks/world/loading/UTUnloader.java
index 48c7857f..05d60560 100644
--- a/src/main/java/mod/acgaming/universaltweaks/tweaks/world/loading/UTUnloader.java
+++ b/src/main/java/mod/acgaming/universaltweaks/tweaks/world/loading/UTUnloader.java
@@ -1,5 +1,8 @@
 package mod.acgaming.universaltweaks.tweaks.world.loading;
 
+import mod.acgaming.universaltweaks.UniversalTweaks;
+import mod.acgaming.universaltweaks.config.UTConfigGeneral;
+import mod.acgaming.universaltweaks.config.UTConfigTweaks;
 import net.minecraft.world.DimensionType;
 import net.minecraft.world.MinecraftException;
 import net.minecraft.world.WorldServer;
@@ -12,10 +15,6 @@
 import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
 import net.minecraftforge.fml.common.gameevent.TickEvent;
 
-import mod.acgaming.universaltweaks.UniversalTweaks;
-import mod.acgaming.universaltweaks.config.UTConfigGeneral;
-import mod.acgaming.universaltweaks.config.UTConfigTweaks;
-
 // Courtesy of Unnoen & tie
 @Mod.EventBusSubscriber(modid = UniversalTweaks.MODID)
 public class UTUnloader
@@ -37,8 +36,8 @@ public static void utUnloader(TickEvent.ServerTickEvent event)
     @SuppressWarnings("ConstantConditions")
     public static void utHandleDimUnload(Integer id)
     {
-        WorldServer worldServer = DimensionManager.getWorld(id);
-        ChunkProviderServer chunkProviderServer = worldServer.getChunkProvider();
+        if (!DimensionManager.isDimensionRegistered(id)) return;
+
         DimensionType dimensionType = DimensionManager.getProviderType(id);
         String dimensionName = "";
 
@@ -49,6 +48,9 @@ public static void utHandleDimUnload(Integer id)
             if (dimensionName.matches(dimConfig) || Integer.toString(id).matches(dimConfig)) return;
         }
 
+        WorldServer worldServer = DimensionManager.getWorld(id);
+        ChunkProviderServer chunkProviderServer = worldServer.getChunkProvider();
+
         if (!worldServer.provider.getDimensionType().shouldLoadSpawn()
             && ForgeChunkManager.getPersistentChunksFor(worldServer).isEmpty()
             && chunkProviderServer.getLoadedChunkCount() == 0