trackLayer.paintRectangleOfTiles(g, x, y, width, height);
    private void paintRectangleOfTiles(Graphics g, int x, int y, int width,        int height) {        terrainLayer.paintRectangleOfTiles(g, x, y, width, height);	buildingLayer.paintRectangleOfTiles(g, x, y, width, height);        trackLayer.paintRectangleOfTiles(g, x, y, width, height);    }