recode mojang lightning

src/js/net/minecraft/client/world/block/Block.js

@@ -2,6 +2,8 @@ window.Block = class {
 
     static blocks = new Map();
 
+    static lightOpacity = [];
+
     static create() {
         Block.STONE = new BlockStone(1, 0);
         Block.GRASS = new BlockGrass(2, 1);
@@ -20,6 +22,7 @@ window.Block = class {
 
         // Register block
         Block.blocks.set(id, this);
+        Block.lightOpacity[id] = this.isSolid() ? 255 : 0;
     }
 
     getId() {