public void set(Block block,int x,int y,int z){
            
            Block current =  blocks[x%16][y%16][z%16];
            if(current  != null)current.removeFromParent();;
            if( block != null) block.addToWorld(x, y, z);
            blocks[x%16][y%16][z%16] = block;
     

    
        
    }