From 3145cccd70afb8bff79ef27a6eae4f0749266a63 Mon Sep 17 00:00:00 2001
From: unix-supremacist <100294596+unix-supremacist@users.noreply.github.com>
Date: Wed, 8 Feb 2023 15:07:50 -0600
Subject: [PATCH] null check chunk extensions to not cause errors with chunk
 pregenerator (#11)

---
 src/main/java/codechicken/lib/world/WorldExtension.java | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/main/java/codechicken/lib/world/WorldExtension.java b/src/main/java/codechicken/lib/world/WorldExtension.java
index 7c3cd46..e6ff496 100644
--- a/src/main/java/codechicken/lib/world/WorldExtension.java
+++ b/src/main/java/codechicken/lib/world/WorldExtension.java
@@ -43,7 +43,8 @@ public abstract class WorldExtension {
     }
 
     protected final void saveChunkData(Chunk chunk, NBTTagCompound tag) {
-        chunkMap.get(chunk).saveData(tag);
+        final ChunkExtension extension = chunkMap.get(chunk);
+        if (extension != null) extension.saveData(tag);
     }
 
     protected final void remChunk(Chunk chunk) {