From b41a6f127eb5532a265a8ee45a630d65ce575dc0 Mon Sep 17 00:00:00 2001
From: md_5 <md_5@live.com.au>
Date: Sat, 22 Jun 2013 16:12:02 +1000
Subject: [PATCH] Allow Disabling of Random Lighting Updates


diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
index 3bcca91..efe7ca5 100644
--- a/src/main/java/net/minecraft/server/Chunk.java
+++ b/src/main/java/net/minecraft/server/Chunk.java
@@ -895,7 +895,7 @@ public class Chunk {
         }
 
         this.m = true;
-        if (!this.lit && this.done) {
+        if (!this.lit && this.done && this.world.spigotConfig.randomLightUpdates) { // Spigot - also use random light updates setting to determine if we should relight
             this.p();
         }
     }
diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
index 6965e82..6997d03 100644
--- a/src/main/java/net/minecraft/server/World.java
+++ b/src/main/java/net/minecraft/server/World.java
@@ -2038,7 +2038,7 @@ public abstract class World implements IBlockAccess {
         }
 
         this.methodProfiler.a("playerCheckLight");
-        if (!this.players.isEmpty()) {
+        if (spigotConfig.randomLightUpdates && !this.players.isEmpty()) { // Spigot
             i = this.random.nextInt(this.players.size());
             entityhuman = (EntityHuman) this.players.get(i);
             j = MathHelper.floor(entityhuman.locX) + this.random.nextInt(11) - 5;
diff --git a/src/main/java/org/spigotmc/SpigotWorldConfig.java b/src/main/java/org/spigotmc/SpigotWorldConfig.java
index 4e4db0a..1422e38 100644
--- a/src/main/java/org/spigotmc/SpigotWorldConfig.java
+++ b/src/main/java/org/spigotmc/SpigotWorldConfig.java
@@ -199,4 +199,11 @@ public class SpigotWorldConfig
         hopperCheck = getInt( "ticks-per.hopper-check", hopperTransfer );
         log( "Hopper Transfer: " + hopperTransfer + " Hopper Check: " + hopperCheck );
     }
+
+    public boolean randomLightUpdates;
+    private void lightUpdates()
+    {
+        randomLightUpdates = getBoolean( "random-light-updates", false );
+        log( "Random Lighting Updates: " + randomLightUpdates );
+    }
 }
-- 
1.8.3.2