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

/**
 * Write a description of class Game here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class Game extends World
{
    Counter counter = new Counter();
    /**
     * Constructor for objects of class Game.
     * 
     */
    public Game()
    {    
        // Create a new world with 600x450 cells with a cell size of 1x1 pixels.
        super(600, 450, 1, false);
        pause();
        generateIce();
        prepare();
        getCounter();
    }

    /**
     * Prepare the world for the start of the program.
     * That is: create the initial objects and add them to the world.
     */
    private void prepare()
    {
        Button pause = new Button();
        Bailey bailey = new Bailey();
        Ice ice = new Ice();
        addObject(pause, 28, 32);
        addObject(counter, 540, 25);
        addObject(ice, 55, 350);
        addObject(bailey, 70, 300);
    }
    
    public void pause()
    {
        if(Greenfoot.isKeyDown("P"))
        {
            Greenfoot.setWorld(new Pause());
        }
    }

    public void generateIce()
    {
        if(Greenfoot.getRandomNumber(100) < 3)
        {
            addObject(new Ice(), 599, Greenfoot.getRandomNumber(450));
        }
    }
    
    public Counter getCounter()
    {
        return counter;
    }
}

import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
import greenfoot.Color;
/**
 * Write a description of class Bailey here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class Bailey extends Actor
{
    int dy = 0;
    int g = 2;
    /**
     * Act - do whatever the Bailey wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
    public void act() 
    {
        lose();
        move();
        setLocation(getX(), getY() + dy);
        dy = dy + g;
    }   
    
    public void lose()
    {
        if (isAtEdge())
        {
            Greenfoot.setWorld(new Lose());
        }
    }
    
    public void move()
    {
        if (Greenfoot.isKeyDown("up"))
        {
            dy = -5;
        }
        
        if (Greenfoot.isKeyDown("right"))
        {
            move(5);
        }
        
        if (Greenfoot.isKeyDown("left"))
        {
            move(-5);
        }
    }
}

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

/**
 * Write a description of class Coin here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class Coin extends Actor
{
    /**
     * Act - do whatever the Coin wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
    public void act() 
    {
        Actor bailey = getOneIntersectingObject(Bailey.class);
        if (bailey!=null)
        {
          Counter counter = new Counter();
          counter.addScore(); 
          getWorld().removeObject(this);
        }
    }
}

import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
import greenfoot.Color;
/**
 * Write a description of class Counter here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class Counter extends Actor
{
    public int score = 0;
    /**
     * updateImage - do whatever the Counter wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
    public void updateImage() 
    {
        setImage(new GreenfootImage("Score: " + score, 25, Color.WHITE, new Color(0,0,0,0)));
    }    
    
    public Counter()
    {
        updateImage();
    }
    
    public void addScore()
    {
        score++;
        updateImage();
    }
}

((Game)getWorld()).getCounter().addScore();