import greenfoot.*;
public class enemy extends Actor
{
    int i;
    public void act() 
    {
        moveAround();
    }
       public boolean hitWall()
    {
        if (isTouching (walls.class))
        {
            return true;
        }
        else
        {
            return false;
        }
    }
    public void moveAround()
    {
        move(3);
        if(isTouching (walls.class)==true)
        {
            move(-3);
            int i = Greenfoot.getRandomNumber(3);
        }
        if(i==1)
        {
            setRotation(90);
            i=0;
        }
        if(i==2)
        {   
            setRotation(-90);
            i=0;
        }
    }
}