import greenfoot.*;  
 


| A hill full of ants.
|
| @author Michael Kölling
| @version 1.1
|
public class AntHill
extends Actor
{    


| Number of ants that have come out so far.
|
private int ants = 0;
    
    

| Total number of ants in this hill.
|
private int maxAnts = 40;

    

| Counter to show how much food have been collected so far.
|
private Counter foodCounter;
    
    


| Constructor for ant hill with default number of ants (40).
|
public AntHill()
    {
    }

    


| Construct an ant hill with a given number of ants.
|
public AntHill(int numberOfAnts)
    {
        maxAnts = numberOfAnts;
    }

    


| Act: If there are still ants left inside, see whether one should come out.
|
public void act()
    {
        if(ants < maxAnts) 
        {
            if(Greenfoot.getRandomNumber(100) < 10) 
            {
                getWorld().addObject(new Ant(this), getX(), getY());
                ants++;
            }
        }
    }

    


| Record that we have collected another bit of food.
|
public void countFood()
    {
        if(foodCounter == null) 
        {
            foodCounter = new Counter("Food: ");
            int x = getX();
            int y = getY() + getImage().getWidth()/2 + 8;

            getWorld().addObject(foodCounter, x, y);
        }        
        foodCounter.increment();
    }
}