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

/**
 * Write a description of class Snake here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class Seal extends Actor{
private int health = 3;
 
public boolean loseLife(int amount)
{
    health -= amount;
    if (health < 1)
    {
        getWorld().removeObject(this);
        return true;
    }
    return false;
}

   public Seal()
    {
        GreenfootImage image = getImage();  
        image.scale(300, 300);
        setImage(image);
        }
        
    
    /**
     * Act - do whatever the Seal wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
    public void act() 
    
    {
        move(4);
        if (Greenfoot.getRandomNumber(50) < 10)
        {
            turn(Greenfoot.getRandomNumber(3) - 3);
        }
        if (getX() <= 5 || getX() >= getWorld().getWidth() - 5)
        {
            turn(180);
        } 
        if (getY() <= 5 || getY() >= getWorld().getHeight() - 5)
        {
            turn(180);
        }
       
        Actor rocket;
        rocket = getOneIntersectingObject(Rocket.class); 
        if (rocket != null)
         {
            World myWorld = getWorld();
            
            Greenfoot.playSound("not_really_fine.wav");
            //Display game over text 
            GameOver gameover = new GameOver(false);
            myWorld.addObject (gameover, myWorld.getWidth()/2, myWorld.getHeight()/2);
            myWorld.removeObject(rocket);
       }  
       Actor seal;
       seal = getOneIntersectingObject(Seal.class);
       if (seal != null)
         {
            World myWorld = getWorld();
            
            
            //Display game over text 
            GameOver gameover = new GameOver(true);
            myWorld.addObject (gameover, myWorld.getWidth()/2, myWorld.getHeight()/2);
            myWorld.removeObject(seal);
       }  

       
    }
}

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

/**
 * Write a description of class GameOver here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class GameOver extends Actor
{
    /**
     * Act - do whatever the GameOver wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
    public GameOver(boolean youWin)
    {
        if (youWin)
        {
            setImage(new GreenfootImage("YOU WIN!!!", 110, Color.GREEN, Color.WHITE));
        }
        else
        {
            setImage(new GreenfootImage("GAME OVER", 110, Color.RED, Color.BLACK));
        }
    }
}