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
{
/**
* Act - do whatever the ball wants to do. This method is called whenever
* the 'Act' or 'Run' button gets pressed in the environment.
*/
public void act()
{
move(4);
if (atWorldEdge()){
turn(153);
}
}
/**
* Test if we are close to one of the edges of the world. Return true is we are.
*/
public boolean atWorldEdge()
{
if(getX() < 10 || getX() > getWorld().getWidth() - 10)
return true;
if(getY() < 10 || getY() > getWorld().getHeight() - 10)
return true;
else
return false;
}
}
