papermc/Spigot-Server-Patches/0116-Do-not-load-chunks-for-light-checks.patch

From 141f4cad8cc1716a1cecd20f8f11aecf00c41be5 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 9a71c35..7e6b3e6 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -707,6 +707,7 @@ 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);
 
-- 
2.8.3
Update to Minecraft 1.10 2016-06-09 03:57:14 +00:00			`From 141f4cad8cc1716a1cecd20f8f11aecf00c41be5 Mon Sep 17 00:00:00 2001`
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. 2016-03-31 23:29:06 +00:00			`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`
Update to Minecraft 1.10 2016-06-09 03:57:14 +00:00			`index 9a71c35..7e6b3e6 100644`
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. 2016-03-31 23:29:06 +00:00			`--- a/src/main/java/net/minecraft/server/World.java`
			`+++ b/src/main/java/net/minecraft/server/World.java`
Refactor Lighting Queue System may help #284 Cleans up the lighting queue system, reducing diff and improving implementation. We no longer stop chunk unloads due to lighting updates, and instead simply flush the lighting queue. The cost of forcing the chunk (and its neighbors!) to stay loaded waiting for its lighting work to finish is much greater than simply taking the hit and doing the work. This change also helps reduce the diff and avoid bugs with missed diffs by removing duplicated logic. Also switches to a more effecient data structure (ArrayDeque instead of LinkedList) for the queue itself. 2016-05-15 22:48:39 +00:00			`@@ -707,6 +707,7 @@ public abstract class World implements IBlockAccess {`
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. 2016-03-31 23:29:06 +00:00			`if (blockposition.getY() >= 256) {`
			`blockposition = new BlockPosition(blockposition.getX(), 255, blockposition.getZ());`
			`}`
			`+ if (!this.isLoaded(blockposition)) return 0; // Paper`

			`Chunk chunk = this.getChunkAtWorldCoords(blockposition);`

			`--`
Update to Minecraft 1.10 2016-06-09 03:57:14 +00:00			`2.8.3`
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. 2016-03-31 23:29:06 +00:00