/** * When being clicked, the ball rolls to the right by some random distance * and then stops. When being clicked again, the same thing happens. * Note, the ball has to roll instead of skipping or jumping to the right. */

public class Ball extends Actor { private int oldX = 0; private int newX = 0;

public void act() {

if (Greenfoot.mousePressed(this)){ int deltaX = Greenfoot.getRandomNumber(100); newX = oldX + deltaX;

} if (oldX != newX){ setLocation(getX()+1, getY());

} } }

I don't know a code how to stop the ball.