import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)

/**
 * Write a description of class ball here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class Ball extends Actor
  
    
{
    public int xspeed = 4;
    public int yspeed = 4;
    public static int BallX, BallY;
    /**     * Act - do whatever the paddle wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
    public void act() 
    {
         
        setLocation(getX() + xspeed, getY()+yspeed);
        bounce();
        movement();
        BallX = getX ();
        BallY = getY ();
    }

    public void movement()
    {
        int worldWidth = getWorld().getWidth();
        int worldHeight = getWorld().getHeight();
        int spriteWidth = getImage().getWidth()/2;
        int spriteHieght = getImage().getHeight()/2;
        if(getX() <= spriteWidth)
        xspeed = xspeed * -1;
        
        if(getX() >= worldWidth - spriteWidth)
         xspeed = xspeed * -1;
      
    }
    
    
      public void bounce ()
   {
        Actor mypaddle = getOneIntersectingObject (mypaddle.class) ;
        if(mypaddle != null)
        {
            yspeed = yspeed * -1;
           
        }
        
        
        Actor paddle = getOneIntersectingObject (paddle.class) ;
        if(paddle != null)
        {
            yspeed = yspeed * -1;
           
        }
}
}