From 2684ee96f7d7c4850c0acbc28e149006a22b33a7 Mon Sep 17 00:00:00 2001
From: "Dylan K. Taylor" <odigiman@gmail.com>
Date: Sun, 1 Nov 2020 15:53:50 +0000
Subject: [PATCH] World: do not perform base lighting calculation on
 non-generated chunks this was causing twice as many light calculations for
 freshly generated chunks.

---
 src/world/World.php | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/world/World.php b/src/world/World.php
index 393fc8d24..934ca83ca 100644
--- a/src/world/World.php
+++ b/src/world/World.php
@@ -930,6 +930,13 @@ class World implements ChunkManager{
 				$dz = mt_rand(-$randRange, $randRange);
 				$hash = World::chunkHash($dx + $chunkX, $dz + $chunkZ);
 				if(!isset($chunkTickList[$hash]) and isset($this->chunks[$hash])){
+					if(
+						!$this->chunks[$hash]->isGenerated() ||
+						!$this->chunks[$hash]->isPopulated() ||
+						$this->isChunkLocked($dx + $chunkX, $dz + $chunkZ)
+					){
+						continue;
+					}
 					//TODO: this might need to be checked after adjacent chunks are loaded in future
 					$lightPopulatedState = $this->chunks[$hash]->isLightPopulated();
 					if($lightPopulatedState !== true){