//
//	PinBall class.  Extends Ball class
//
//	From Chapter 7 of
//	Understanging Object-Oriented Programming with Java
//	Written by Tim Budd
//	Published by Addison-Wesley Longman
//
//	See ftp://ftp.cs.orst.edu/pub/budd/java/ReadMe.html 
//	for further information
//

import java.awt.*;

public class PinBall extends Ball {
	
    public PinBall (int sx, int sy) 
    {
	super(sx, sy, 10);
	// start out moving (roughly) vertical
	setMotion (-2 + Math.random()/4, -15);
    }

    private double gravityEffect = 0.3;

    public void move ()
    {
	dy = dy + gravityEffect; // effect of gravity
	super.move();	// update the ball position
    }
}