private void addLabyrinth(int height, int length) {
        for (int i = 1; i < height; i++) {
            for (int j = 1; j < length; j++) {
                
                if (border(i,j,length,height)) {
                    super.addBricks(new Point(i, j));
                    
                } else if (centralBlock(i, j, length, height) && 
                        crossWithinCentralBlock(i, j, length, height)) {  
                    super.addBricks(new Point(i, j));
                }
            }
        }
    }