public World(){
        try {
            BufferedImageLoader loader = new BufferedImageLoader();
            BLOCK_DIRT_TOP = loader.loadImage("images/tile_topDirt1.png");
            BLOCK_SKY = loader.loadImage("images/tile_sky.png");
            blocks = new Rectangle[arrayNum];
            blockImg = new Image[arrayNum];
            isSolid = new boolean[arrayNum];
            
            loadArrays();
        } catch (IOException ex) {
            Logger.getLogger(World.class.getName()).log(Level.SEVERE, null, ex);
        }
    }