PaperMC/Spigot-Server-Patches/0164-Don-t-load-Chunks-from-Hoppers-and-other-things.patch
Aikar 18c3716c49
Current Chunk for Entity and Block Entities, counts by entity type
This enables us a fast reference to the entities current chunk instead
of having to look it up by hashmap lookups.

We also store counts by type to further enable other performance optimizations in later patches.
2018-07-04 03:58:56 -04:00

36 lines
1.7 KiB
Diff

From 3d7dc05a042dca4e664cbabe11769c6b80da55af 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 bc398ec52..90267a1fb 100644
--- a/src/main/java/net/minecraft/server/BlockChest.java
+++ b/src/main/java/net/minecraft/server/BlockChest.java
@@ -339,7 +339,13 @@ public class BlockChest extends BlockTileEntity {
while (iterator.hasNext()) {
EnumDirection enumdirection = (EnumDirection) iterator.next();
BlockPosition blockposition1 = blockposition.shift(enumdirection);
- Block block = world.getType(blockposition1).getBlock();
+ // Paper start - don't load chunks if the other side of the chest is in unloaded chunk
+ final IBlockData type = world.getTypeIfLoaded(blockposition1); // Paper
+ if (type == null) {
+ continue;
+ }
+ Block block = type.getBlock();
+ // Paper end
if (block == this) {
if (this.e(world, blockposition1)) {
--
2.18.0