public class BotenUpgrade extends World
{
    private static final GreenfootImage bgImage = new GreenfootImage("Backgroundje.png");
    private static final int scrollSpeed = 4;

    private GreenfootImage scrollingImage;
    private int scrollPosition = 8;
    
    // instance fields  
   private int maxBarrels = 4;   
   private int maxBomb = 0;  
   private int actCounter; 

 
   
    /**
     * Constructor for objects of class BotenUpgrade.
     * 
     */
    public BotenUpgrade()
    {    
        // Create a new world with 600x400 cells with a cell size of 1x1 pixels.
        super(760, 760, 1); 
   
        GreenfootImage background = new GreenfootImage(760, 760);
        scrollingImage = getScrollingImage(760, 760);
        background.drawImage(scrollingImage, 500, 500);
        setBackground(background);
   
        addObject(new boot(), 350, 600);
   
        setBackground("Backgroundje.png");
        
        addHeart();
       
        addTime();
        
       addObject(new Clock(true, true, 180, "Meter over:"), 700, 50);
       
    }
    
        public void act()
    {
        if(scrollSpeed > 0 && scrollPosition <= 0) {
            scrollPosition = getWidth();
        }
        if(scrollSpeed < 0 && scrollPosition >= getWidth()) {
            scrollPosition = 0;
        }
        scrollPosition -= scrollSpeed;
        paint(scrollPosition);
        
        spawnBarrel();
        spawnBomb();
        runCounters();
         
    }
    
    public void spawnBarrel()
    {
      if (Greenfoot.getRandomNumber(200) == 1) 
      {
         if (getObjects(barrel.class).size() < maxBarrels) {  
         addObject(new barrel(), 750, Greenfoot.getRandomNumber(250)+500);  
        }
      }
   
    }
    
    public void spawnBomb()
    {
      if (Greenfoot.getRandomNumber(200) == 1) 
      {
         if (getObjects(Bomb.class).size() < maxBomb) {  
         addObject(new Bomb(), 750, Greenfoot.getRandomNumber(250)+500);  
        }
      }
  
    }
    
    private void runCounters()  
   {  
    actCounter++;  
    runActCounterBarrel();  
    runActCounterBomb();  
   } 
    
    private void runActCounterBarrel()  
   {  
     
    if (actCounter%3000 == 0)   
    {  
        maxBarrels++;  
        //if (maxBarrels == 9) Greenfoot.stop();  
    }   
   } 
   
    private void runActCounterBomb()  
   {  
    if (actCounter%3000 == 0)  maxBomb++;  
   } 
  
    /**
     * Paint scrolling image at given position and make sure the rest of
     * the background is also painted with the same image.
     */
    private void paint(int position)
    {
        GreenfootImage bg = getBackground();
        bg.drawImage(scrollingImage, position, 0);
        bg.drawImage(scrollingImage, position - scrollingImage.getWidth(), 0);
    }
    
    /**
     * Returns an image with the given dimensions.
     */
    private GreenfootImage getScrollingImage(int width, int height)
    {
        GreenfootImage image = new GreenfootImage(width, height);
        for(int x = 0; x < width; x += bgImage.getWidth()) {
            for(int y = 0; y < height; y += bgImage.getHeight()) {
                image.drawImage(bgImage, x, y);
            }
        }
        return image;
    } 

    /**
     * Prepare the world for the start of the program. That is: create the initial
     * objects and add them to the world.
     */
    private void addHeart()
    {
        heart heart = new heart();
        addObject(heart, 142, 58);    
    }
    
    GreenfootSound music = new GreenfootSound("Wind Waker The Great Sea (Ocean) Music Extended.mp3");    
    public void started()    
    {    
        music.playLoop();    
    }   
    
    private void addTime()
    {
        TimeChecker time = new TimeChecker();
        addObject(time, 700, 50);
        
    }

 }