From b8618b6165816f7a3f9f8140ba34353778fc70b3 Mon Sep 17 00:00:00 2001
From: Jonas Herzig <jonas@spark-squared.com>
Date: Mon, 13 Jul 2020 19:22:28 +0200
Subject: [PATCH] Fix dead-lock when rendering outside of loaded chunks (fixes
 #197)

---
 .../com/replaymod/render/mixin/Mixin_ForceChunkLoading.java  | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/main/java/com/replaymod/render/mixin/Mixin_ForceChunkLoading.java b/src/main/java/com/replaymod/render/mixin/Mixin_ForceChunkLoading.java
index d2e9293b..f7b8b80b 100644
--- a/src/main/java/com/replaymod/render/mixin/Mixin_ForceChunkLoading.java
+++ b/src/main/java/com/replaymod/render/mixin/Mixin_ForceChunkLoading.java
@@ -79,7 +79,10 @@ public abstract class Mixin_ForceChunkLoading {
                 // Schedule all chunks which need rebuilding (we schedule even important rebuilds because we wait for
                 // all of them anyway and this way we can take advantage of threading)
                 for (ChunkBuilder.BuiltChunk builtChunk : this.chunksToRebuild) {
-                    builtChunk.scheduleRebuild(this.chunkBuilder);
+                    // MC sometimes schedules invalid chunks when you're outside of loaded chunks (e.g. y > 256)
+                    if (builtChunk.shouldBuild()) {
+                        builtChunk.scheduleRebuild(this.chunkBuilder);
+                    }
                     builtChunk.cancelRebuild();
                 }
                 this.chunksToRebuild.clear();