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

/**
 * Write a description of class Asteroid1 here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class Asteroid1 extends Actor
{
    World MyWorld = getWorld();
    private int rotation = 0;
    private int speed = 0;
    public Asteroid1()
    {
        rotation = (int) (Math.random() * 359);
        speed = (int) (1+ Math.random() * 2);
        setRotation(rotation);
    }
    public void act() 
    {
        if(getWorld() == null) {return;}
        hitDetection() ;
        move(speed);
        wrapEdge();
    }
    public String currentEdge()
    {
        int y = getY();
        int x = getX();
        World myWorld = getWorld();
        if (y == 0 )
        {
            return "top";
        }
        else if ( x==0 )
        {
            return "left";
        }
        else if (y == myWorld.getHeight() - 1)  //   -1 because it would not find it otherwise
        {
            return "bottom";
        }
        else if ( x == myWorld.getWidth() - 1)   //   -1 because it would not find it otherwise
        {
            return "right";
        }
        else 
        {
            return null;
        }
    }

    public void wrapEdge()
    {
        String currentEdge = currentEdge();
        int x = getX();
        int y = getY();
        World myWorld = getWorld();
        if(currentEdge == "top")
        {
            setLocation(x, myWorld.getHeight() - 1);
        }
        else if(currentEdge == "left")
        {
            setLocation(myWorld.getWidth() - 1,y);
        }
        else if(currentEdge == "bottom")
        {
            setLocation(x, 0);
        }
        else if(currentEdge == "right")
        {
            setLocation(0, y);
        }
    }

    public void hitDetection() 
    {

        Actor b = getOneIntersectingObject(Bullet.class);  

        if(b != null)  
        {  
            getWorld().removeObject(this);   
        }  
    }

    
}