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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Thu, 23 Apr 2020 01:36:39 -0400
Subject: [PATCH] Don't fire BlockFade on worldgen threads
Caused a deadlock
diff --git a/src/main/java/net/minecraft/server/BlockFire.java b/src/main/java/net/minecraft/server/BlockFire.java
index a11a775a929c5f868f1b84c56d7e1715a91db236..a8875a9a5fa6b285b41f3de1bc81c44f35ea5cce 100644
--- a/src/main/java/net/minecraft/server/BlockFire.java
+++ b/src/main/java/net/minecraft/server/BlockFire.java
@@ -35,6 +35,7 @@ public class BlockFire extends BlockFireAbstract {
@Override
public IBlockData updateState(IBlockData iblockdata, EnumDirection enumdirection, IBlockData iblockdata1, GeneratorAccess generatoraccess, BlockPosition blockposition, BlockPosition blockposition1) {
// CraftBukkit start
+ if (!(generatoraccess instanceof WorldServer)) return this.canPlace(iblockdata, generatoraccess, blockposition) ? (IBlockData) this.a(generatoraccess, blockposition, (Integer) iblockdata.get(BlockFire.AGE)) : Blocks.AIR.getBlockData(); // Paper - don't fire events in world generation
if (!this.canPlace(iblockdata, generatoraccess, blockposition)) {
// Suppress during worldgen
if (!(generatoraccess instanceof World)) {
@@ -50,7 +51,7 @@ public class BlockFire extends BlockFireAbstract {
return blockState.getHandle();
}
}
- return this.a(generatoraccess, blockposition, (Integer) iblockdata.get(BlockFire.AGE));
+ return this.a(generatoraccess, blockposition, (Integer) iblockdata.get(BlockFire.AGE)); // Paper - diff on change, see "don't fire events in world generation"
// CraftBukkit end
}
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