import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
 
/**
 * Write a description of class bullet here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class bullet extends Shooter
{
private int direction, speed;
    public bullet(int dir)
    {
        direction = dir;
    }


    int time=10;
    public boolean atWorldEdge()
    {
        if(getX() < 10 || getX() > getWorld().getWidth() - 10)
            return true;
        if(getY() < 10 || getY() > getWorld().getHeight() - 10)
            return true;
        else
            return false;
    }
 
    /**
     * Act - do whatever the bullet wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
 
    public void act()
    {
        setRotation(direction);
        move(speed);
    
        destroyEnemies ();
        move(17);
        kill();
        if (this.atWorldEdge()) 
        {
            getWorld().removeObject(this);
        }  
        }
    
 
    public bullet()
    {
        GreenfootImage image=getImage();
        image.scale(40,6);
        setImage(image);
    }  
 
    public void destroyEnemies()
    {
        //"Enemy" can be any class that you want the bullet to destroy. 
        Actor enemy = getOneIntersectingObject(Enemy.class);
        if(enemy != null) 
        {
            World myWorld = getWorld();
            getWorld().removeObject(enemy); 
    }
}
    public void kill()
    {
        //"Enemy" can be any class that you want the bullet to destroy. 
        Actor blueenemy = getOneIntersectingObject(Enemy.class);
        if(blueenemy != null) 
        {
            getWorld().removeObject(blueenemy);                    
        }
    }

}

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

/**
 * Write a description of class Shooter here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class Shooter extends Actor
{
    public void act() 
    {
        if(Greenfoot.isKeyDown("space") )
        {
            getWorld().addObject(new bullet(getRotation()), getX(), getY());
        }
        if (Greenfoot.isKeyDown ("w"))
        {
            move(3);
        }
        if (Greenfoot.isKeyDown ("s"))
        {
            move(-3);
        }
        if (Greenfoot.isKeyDown ("d"))
        {
            turn(4);
        }
        if (Greenfoot.isKeyDown ("a"))
        {
            turn (-4);
        }
    }    
}

bullet b = new bullet(getRotation());
getWorld().addObject(b, getX(), getY());

b.setRotation(getRotation()); // set its rotation
b.move(20); // adjust its initial location