import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
import java.awt.Color;
/**
 * Write a description of class Floor here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class Floor extends World
{
     public Bar bar = new Bar("Ninja", "Health Points", 20, 20);
     private int startEnenemies = 1;
     public int players;
     public Kunai kunai;
     private int Points = kunai.Kills;
     GreenfootImage bg = getBackground();
    /**
     * Constructor for objects of class Floor.
     * 
     */
    public Floor()
    {    
        // Create a new world with 600x400 cells with a cell size of 1x1 pixels.
        super(1200, 800, 1); 
        
        bg.setColor(Color.BLACK);
        
        Score();
        Killing();
     
        addEnnemies(startEnenemies);
        addObject(new Ninja(),500,500);
        addObject(bar, 1000, 740);
        addObject(new Bat(), 520,450);
    }
     private void addEnnemies(int count) 
    {
        for(int i = 0; i < count; i++) 
        {
            int x = Greenfoot.getRandomNumber(getWidth()/2);
            int y = Greenfoot.getRandomNumber(getHeight()/2);
            addObject(new Ennemies(), x, y);
        }
    }
    public void act()
        {
        if (Greenfoot.getRandomNumber(200) == 0)
                {
                    addObject (new Ennemies(), Greenfoot.getRandomNumber(600) + 20, Greenfoot.getRandomNumber(440) + 20);
                }
                {
        if (bar.getValue() == bar.getMinimumValue())
        {
            if (getObjects(GameOver.class).isEmpty()) showGameOver();
            return;
        }
        }
        }
    private void showGameOver()
        {
         addObject(new GameOver(), getWidth() / 2, getHeight() / 2);
         Greenfoot.stop();
        }
    public int Score ()
     {
     return Points;
     }
     public void Killing()
     {
       bg.drawString("Kills " + Points , 1050,100);
     }
}

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

/**
 * Write a description of class Kunai here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class Kunai extends SmoothMover
{
    /** The damage this bullet will deal */
    private static final int damage = 50;
    public static int Kills;
    /** A bullet looses one life each act, and will disappear when life = 0 */
    private int life = 40;
    
    public Kunai()
    {
    }
    
    public Kunai(Vector speed, int rotation)
    {
        super(speed);
        setRotation(rotation);
        addForce(new Vector(rotation, 15));
    }
    
    /**
     * The bullet will damage asteroids if it hits them.
     */
    public void act()
    {
        if(life <= 0) {
            getWorld().removeObject(this);
        } 
        else {
            life--;
            move();
            checkEnnemiesHit();
        }
    }
    
    /**
     * Check whether we have hit an asteroid.
     */
    private void checkEnnemiesHit()
    {
        Ennemies ennemies = (Ennemies) getOneIntersectingObject(Ennemies.class);
        if (ennemies != null){
            getWorld().removeObject(this);
            ennemies.hit(damage);
            Kills = Kills + 1;
            System.out.println(Kills);
        }
    }
}