actually useful

world.js

@@ -9,6 +9,10 @@ export class World {
         this.blocks.set(key, { id, x, y, z, props });
     }
 
+    removeBlock(x, y, z) {
+        this.blocks.delete(`${x},${y},${z}`);
+    }
+
     updateBlock(x, y, z, newProps) {
         const key = `${x},${y},${z}`;
         const block = this.blocks.get(key);