I have a soon-to-be due assignment due in computer science. I have encountered a problem, for which no matter how long I study the API's of the class and superclasses, I can not figure out.

Suppose I wish to design a sort of "Breakout game" where the mouse motion controls the motion of a block that is used to bounce a ball, which then destroys multi colored bricks.

How do you specifically make the block "listen" to the mouse? The below code is what I have attempted to achieve the desired results.

/** Breakout Program*/
public class Breakout extends GraphicsProgram implements MouseMotionListener {


...
 /** The Paddle Itself */
    private GRect paddle = new GRect(0, HEIGHT-PADDLEBOTTOM_OFFSET, PADDLEWIDTH, PADDLEHEIGHT);
...

    /** Run the Breakout program. */
    public void run() {

        paddle.setFillColor(Color.BLACK);
        paddle.setFilled(true);

        add(paddle);
        paddle.addMouseListener(this);

        ...

    }



   /** Move the horizontal middle of the paddle to the x-coordinate of the mouse position -
      * -but keep the paddle completely on the board. */ 
    public void mouseMoved(MouseEvent e) { 
        GPoint p= new GPoint(e.getPoint());
        double x = p.getX();
        paddle.setLocation(x, HEIGHT-PADDLEBOTTOM_OFFSET);

        }

}

Any clarification on why/what I am doing incorrectly would be helpful, thanks.