From b4b6f4a7620b117d071ff2591aecb0970c120342 Mon Sep 17 00:00:00 2001
From: LabyStudio <labystudio@gmail.com>
Date: Tue, 1 Feb 2022 12:53:33 +0100
Subject: [PATCH] disable light updates on chunk load

---
 src/js/net/minecraft/client/Minecraft.js   |  2 ++
 src/js/net/minecraft/client/world/World.js | 30 ++++++++++------------
 2 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/src/js/net/minecraft/client/Minecraft.js b/src/js/net/minecraft/client/Minecraft.js
index b77b144..ece1e13 100644
--- a/src/js/net/minecraft/client/Minecraft.js
+++ b/src/js/net/minecraft/client/Minecraft.js
@@ -99,6 +99,7 @@ window.Minecraft = class {
             if (button === 0) {
                 if (hitResult != null) {
                     this.world.setBlockAt(hitResult.x, hitResult.y, hitResult.z, 0);
+                    this.world.updateBlockLightAt(hitResult.x, hitResult.y, hitResult.z);
                 }
             }
 
@@ -124,6 +125,7 @@ window.Minecraft = class {
                     // Don't place blocks if the player is standing there
                     if (!placedBoundingBox.intersects(this.player.boundingBox)) {
                         this.world.setBlockAt(x, y, z, this.pickedBlock);
+                        this.world.updateBlockLightAt(x, y, z);
                     }
                 }
             }
diff --git a/src/js/net/minecraft/client/world/World.js b/src/js/net/minecraft/client/world/World.js
index 4e56469..2ea1a37 100644
--- a/src/js/net/minecraft/client/world/World.js
+++ b/src/js/net/minecraft/client/world/World.js
@@ -15,22 +15,22 @@ window.World = class {
 
     onTick() {
         // Handle 128 light updates per tick
-         for (let i = 0; i < 128; i++) {
+        for (let i = 0; i < 128; i++) {
 
-             // Light updates
-             if (this.lightUpdateQueue.length !== 0) {
+            // Light updates
+            if (this.lightUpdateQueue.length !== 0) {
 
-                 // Get next position to update
-                 let positionIndex = this.lightUpdateQueue.shift();
-                 if (positionIndex != null) {
-                     let z = positionIndex >> 16;
-                     let x = positionIndex - (z << 16);
-                     this.updateBlockLightsAtXZ(x, z);
-                 } else {
-                     break;
-                 }
-             }
-         }
+                // Get next position to update
+                let positionIndex = this.lightUpdateQueue.shift();
+                if (positionIndex != null) {
+                    let z = positionIndex >> 16;
+                    let x = positionIndex - (z << 16);
+                    this.updateBlockLightsAtXZ(x, z);
+                } else {
+                    break;
+                }
+            }
+        }
     }
 
     loadChunk(chunk) {
@@ -85,8 +85,6 @@ window.World = class {
         let chunkSection = this.getChunkAtBlock(x, y, z);
         if (chunkSection != null) {
             chunkSection.setBlockAt(x & 15, y & 15, z & 15, type);
-
-            this.updateBlockLightAt(x, y, z);
         }
 
         this.onBlockChanged(x, y, z);