public void act()
{
if(w == 3 || l == 3) Greenfoot.stop();
}

public int w;
public int l;

 w = 0;
l = 0;

public class WombatWorld extends World
{ 
    public int w;
    public int l;
    /**
     * Create a new world with 8x8 cells and
     * with a cell size of 60x60 pixels
     */
     public void act()
     {
        if(w == 3 || l == 3) Greenfoot.stop();
     }
    public WombatWorld() 
    {
        w = 0;
        l = 0;
        super(8, 8, 60);        
        setBackground("cell.jpg");
        setPaintOrder(Wombat.class, Leaf.class);
        populateWorld();
    }
    /**
     * Populate the world with a fixed scenario of wombats and leaves.
     */    
    public void populate()
    {
        Wombat w1 = new Wombat();
        addObject(w1, 3, 3);
        
        Wombat w2 = new Wombat();
        addObject(w2, 1, 7);

        Leaf l1 = new Leaf();
        addObject(l1, 5, 3);

        Leaf l2 = new Leaf();
        addObject(l2, 0, 2);

        Leaf l3 = new Leaf();
        addObject(l3, 7, 5);

        Leaf l4 = new Leaf();
        addObject(l4, 2, 6);

        Leaf l5 = new Leaf();
        addObject(l5, 5, 0);
        
        Leaf l6 = new Leaf();
        addObject(l6, 4, 7);
    }
    
    /**
     * Place a number of leaves into the world at random places.
     * The number of leaves can be specified.
     */
    public void randomLeaves(int howMany)
    {
        for(int i=0; i<howMany; i++) {
            Leaf leaf = new Leaf();
            int x = Greenfoot.getRandomNumber(getWidth());
            int y = Greenfoot.getRandomNumber(getHeight());
            addObject(leaf, x, y);
        }
    }

    
    public void populateWorld()
    {
        int i = 0;
        
        for (i=0; i<10; i++)
{
            addObject (new Wombat(), Greenfoot.getRandomNumber (8), Greenfoot.getRandomNumber (8)); 
            w++;
}
            
            
        for (i=0; i<30; i++)
{
            addObject (new Leaf(), Greenfoot.getRandomNumber (8), Greenfoot.getRandomNumber (8)); 
            l++;
    }
}
}

    public WombatWorld() 
    {
        w = 0;
        l = 0;
        super(8, 8, 60);        
        setBackground("cell.jpg");
        setPaintOrder(Wombat.class, Leaf.class);
        populateWorld();
    }
public void act()
     {
        if(w == 3 || l == 3) Greenfoot.stop();
     }

public void act()
{
    if (getObjects(Wombat.class).size() == 3 || 
        getObjects(Leaf.class).size() == 3)
            Greenfoot.stop();
}