Paper/Spigot-Server-Patches/0146-Don-t-load-Chunks-from-Hoppers-and-other-things.patch
Aikar e2c75e81f7
Update Paper to 1.13 proper - THIS IS STILL HIGHLY UNSTABLE
DO NOT RUN ON PRODUCTION SERVERS!!! Use Backups!!
2018-07-22 01:27:46 -04:00

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From c6e872685630cb2732c1f34b2f53d95867fcea05 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Thu, 3 Nov 2016 20:28:12 -0400
Subject: [PATCH] Don't load Chunks from Hoppers and other things
Hoppers call this to I guess "get the primary side" of a double sided chest.
If the double sided chest crosses chunk lines, it causes the chunk to load.
This will end up causing sync chunk loads, which will unload with Chunk GC,
only to be reloaded again the next tick.
This of course is undesirable, so just return the loaded side as "primary"
and treat it as a single chest if the other sides are unloaded
diff --git a/src/main/java/net/minecraft/server/BlockChest.java b/src/main/java/net/minecraft/server/BlockChest.java
index 1ad39aca3..7262c2b19 100644
--- a/src/main/java/net/minecraft/server/BlockChest.java
+++ b/src/main/java/net/minecraft/server/BlockChest.java
@@ -196,7 +196,12 @@ public class BlockChest extends BlockTileEntity implements IFluidSource, IFluidC
return (ITileInventory) object;
} else {
BlockPosition blockposition1 = blockposition.shift(k(iblockdata));
- IBlockData iblockdata1 = world.getType(blockposition1);
+ // Paper start - don't load chunks if the other side of the chest is in unloaded chunk
+ final IBlockData iblockdata1 = world.getTypeIfLoaded(blockposition1); // Paper
+ if (iblockdata1 == null) {
+ return null;
+ }
+ // Paper end
if (iblockdata1.getBlock() == this) {
BlockPropertyChestType blockpropertychesttype1 = (BlockPropertyChestType) iblockdata1.get(BlockChest.b);
--
2.18.0