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

/**
 * Write a description of class Box here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class Box extends Actor
{
    private GreenfootImage image1=new GreenfootImage("mystery.png");
    private GreenfootImage image2=new GreenfootImage("MysteryG.png");
    public Box()
    {
       setImage(image1);
    }
    /**
     * Act - do whatever the Box wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
    public void act() 
    {
        //
    }
    
}

import greenfoot.*;

/**
 * The class Mover provides some basic movement methods. Use this as a superclass
 * for other actors that should be able to move left and right, jump up and fall 
 * down.
 */
public class Mover extends Actor
{
    private static final int acceleration = 2;      // down (gravity)
    private static final int speed = 7;             // running speed (sideways)
    
    private int vSpeed = 0;                         // current vertical speed
    

    public void moveRight()
    {
        setLocation ( getX() + speed, getY() );
    }

    public void moveLeft()
    {
        setLocation ( getX() - speed, getY() );
    }
            
    public boolean onTop()
    {
        Object under = getOneObjectAtOffset(0, -getImage().getHeight()/2 , null);
        return under != null;
    }
    
    public boolean onGround()
    {
        Object under = getOneObjectAtOffset(0, getImage().getHeight()/2-8 , null);
        return under != null;
    }
    
    public boolean touchingLeftSide()
    {
       Object side=getOneObjectAtOffset(-getImage().getWidth()/2,getImage().getHeight()/2-1,null);
       return side!=null;
    }
    public boolean touchingLeftSide2()
    {
       Object side=getOneObjectAtOffset(-getImage().getWidth()/2,-getImage().getHeight()/2+1,null);
       return side!=null;
    }
    public boolean touchingLeftSide3()
    {
       Object side=getOneObjectAtOffset(-getImage().getWidth()/2,0,null);
       return side!=null;
    }
    
    public boolean touchingRightSide()
    {
       Object side=getOneObjectAtOffset(getImage().getWidth()/2,-getImage().getHeight()/2+1,null);
       return side!=null;
    }
    public boolean touchingRightSide2()
    {
       Object side=getOneObjectAtOffset(getImage().getWidth()/2,getImage().getHeight()/2-1,null);
       return side!=null;
    }
    public boolean touchingRightSide3()
    {
       Object side=getOneObjectAtOffset(getImage().getWidth()/2,0,null);
       return side!=null;
    }
    
    public void setVSpeed(int speed)
    {
        vSpeed = speed;
    }
    
    public void fall()
    {
        bump();
        setLocation ( getX(), getY() + vSpeed);
        vSpeed = vSpeed + acceleration;
        if ( atBottom() )
            gameEnd();
    }
    
    private boolean atBottom()
    {
        return getY() >= getWorld().getHeight() - 2;
    }
    
    public void gameEnd()
    {
        Scene scene=(Scene)getWorld();
        scene.lives--;
        scene.reset();
        scene.level1();
    }

    public void bump()
    {
        if (onTop())
        {
            vSpeed=-vSpeed;
        }
    }
}

import greenfoot.*;

/**
 * A little penguin that wants to get to the other side.
 */
public class Pengu extends Mover
{
    private static final int jumpStrength = 16;
    
    public void act() 
    {
        coins();
        checkKeys();        
        checkFall();
        
    }
    
    private void checkKeys()
    {
        if (Greenfoot.isKeyDown("left") )
        {
            setImage("pengu-left2.png");
            if(!touchingLeftSide()||!touchingLeftSide2()||!touchingLeftSide3())
               moveLeft();
        }
        if (Greenfoot.isKeyDown("right") )
        {
            setImage("pengu-right2.png");
            if(!touchingRightSide()||!touchingRightSide2()||!touchingRightSide3())
               moveRight();
        }
        if (Greenfoot.isKeyDown("space") )
        {
            if (onGround())
                jump();
        }
    }    
    
    private void jump()
    {
        setVSpeed(-jumpStrength);
        fall();
    }
    
    private void checkFall()
    {
        if (onGround()) {
            setVSpeed(0);
        }
        else {
            fall();
        }
        
    }
    private void coins()
    {
        Scene scene=(Scene)getWorld();
        Coin coin=(Coin)getOneIntersectingObject(Coin.class);
        if(coin!=null)
        {
            scene.removeObject(coin);
            scene.score=scene.score+100;
            scene.coins=scene.coins+1;
        }
    }
}