PaperMC/Spigot-Server-Patches/Do-not-load-chunks-for-light-checks.patch
Aikar 8778a2ef97 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 03:55:24 -04:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Thu, 31 Mar 2016 19:17:58 -0400
Subject: [PATCH] Do not load chunks for light checks
Should only happen for blocks on the edge that uses neighbors light level
(certain blocks). In that case, there will be 3-4 other neighbors to get a light level from.
diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index 119cd0636..5d5003920 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -0,0 +0,0 @@ public abstract class World implements IBlockAccess {
if (blockposition.getY() >= 256) {
blockposition = new BlockPosition(blockposition.getX(), 255, blockposition.getZ());
}
+ if (!this.isLoaded(blockposition)) return 0; // Paper
Chunk chunk = this.getChunkAtWorldCoords(blockposition);
--