need help making the ball bounce off the paddle
public void act()
{
movement();
Actor paddle_1 = getOneIntersectingObject(Bar1.class);
if (paddle_1!=null)
{
xSpeed = -xSpeed;
}
Actor paddle_2 = getOneIntersectingObject(Bar2.class);
if (paddle_2!=null)
{
xSpeed = -xSpeed;
}
}