public Screen() {
		super();
		paused = false;
		screen = new Square[22][10];
		for (int row = 0; row < 20; ++row) {
			for (int col = 0; col < 10; ++col) {
				screen[row][col] = new Square(true, Color.BLUE);
			}
		}
		for(int i = 0; i < 10; ++i){
			screen[20][i] = new Square(false, Color.BLACK);
			screen[21][i] = new Square(false, Color.BLACK);
		}
		setBackground(Color.BLACK);
		setBorder(BorderFactory.createLineBorder(Color.RED));
		Dimension d = new Dimension(350, 694);
		setPreferredSize(d);
	}