Non_moving Actors

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

/**
 * Write a description of class Villian here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class Villian extends Actor
{
    /**
     * Act - do whatever the Villian wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
    public void act() 
    {
       move(2);
       if (Greenfoot.getRandomNumber(100) < 10)
       {
           turn(Greenfoot.getRandomNumber(90) - 45);
       }   
       if (getX() <= 5 || getX() >= getWorld().getHeight() - 5)
       {
           turn(180);
       }
       if (getY() <= 5 || getY() >= getWorld().getHeight() - 5)
       {
           turn(180);
       }
}
}