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BuddyFett
BuddyFett wrote ...

2013/12/9

Lives

BuddyFett BuddyFett

2013/12/9

#
I am making a breakout game and I cannot figure out how to add Lives to my game. I have tried many different methods to add lives but cannot get it. I have reverted all of my code to before I tried to add lives. SubWorld-my world class
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import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
 
/**
 * Write a description of class SubWorld here.
 *
 * @author (your name)
 * @version (a version number or a date)
 */
public class SubWorld extends World
{
    private static final int GAP = 15;
    public int lives = 4;
    private Paddle paddle;
    private Counter counter;
     
 
    /**
     * Constructor for objects of class SubWorld.
     *
     */
    public SubWorld()
    {   
 
        super(460, 500, 1);
 
        counter = new Counter();
        addObject (counter, 113, 440);
 
        paddle = new Paddle();
        addObject ( paddle, getWidth() / 2, getHeight() - 40);
 
        createBlocks();
 
        prepare();
    }
 
    public void act()
    {
        checkLives();
        blockCount();
    }
 
    private void checkLives()
    {
        if (lives == 3)
        {
            removeObject(lave);
        }
        if (lives == 2)
        {
            removeObject(love);
        }
        if (lives == 1)
        {
            removeObject(live);
            Greenfoot.stop();
        }
    }
 
    private void createBlocks()
    {
        int x;
        int y = 30;
 
        while( y <= 120 )
        { x = 45;
            while( x < 460 )
            {
                addObject( new Block(), x, y);
                x = x + 60 + GAP;
            }
            y = y + 20 + GAP;
        }
    }
 
    public void blockCount()
    {
        if(getObjects(Block.class).size()==0) {
            Greenfoot.setWorld(new YouWin());
        }
    }
 
    public void gameOver()
    {
        Greenfoot.stop();
    }
 
    public void ballIsOut()
    {
        paddle.newBall();
        lifeLost();
    }
 
    public void lifeLost()
    {
        lives--;
    }
 
    public void score()
    {
        counter.addScore();
    }
 
 
    /**
     * Prepare the world for the start of the program. That is: create the initial
     * objects and add them to the world.
     */
    private void prepare()
    {
        Live live = new Live();
        addObject(live, 30, 484);
        live.setLocation(19, 468);
        Live live2 = new Live();
        addObject(live2, 61, 483);
        live2.setLocation(48, 469);
        Live live3 = new Live();
        addObject(live3, 96, 459);
        live3.setLocation(32, 487);
        removeObject(live3);
        removeObject(live);
        removeObject(live2);
    }
}
Ball
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import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
 
/**
 * Write a description of class Ball here.
 *
 * @author (your name)
 * @version (a version number or a date)
 */
public class Ball extends Actor
{
    private int deltaX;         // x movement speed
    private int deltaY;         // y movement speed
    private int count = 2;
 
    private boolean stuck = true;
    private Counter counter;
     
    public Ball()
    {
    }
     
    /**
     * Act - do whatever the Ball wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
    public void act()
    {
        if  (!stuck)
        {
            move();
            makeSmoke();
            checkOut();
            checkBlock();
        }
    } 
 
    public void move()
    {
        setLocation (getX() + deltaX, getY() + deltaY);
        checkPaddle();
        checkWalls();
    }
     
    private void checkWalls()
    {
        if (getX() == 0 || getX() == getWorld().getWidth()-1) {
            deltaX = -deltaX;
        }
        if (getY() == 0 || getY() == getWorld().getHeight()-1) {
            deltaY = -deltaY;
        }
    }
     
    private void checkOut()
    {
        if (getY() == getWorld().getHeight()-1) {
            ((SubWorld) getWorld()).ballIsOut();
            getWorld().removeObject(this);
        }
    }
     
    private void checkBlock()
    {
        Actor block = getOneIntersectingObject(Block.class);
 
        if (block != null)
        {
             
            getWorld().removeObject(block);
            SubWorld myBoard = (SubWorld) getWorld();
            myBoard.score();
            deltaY = -deltaY;
             
        }
    }
     
    public void gameOver()
    {
        Greenfoot.stop();
    }
     
    private void checkPaddle()
    {
        Actor paddle = getOneIntersectingObject(Paddle.class);
        if (paddle != null) {
            deltaY = -deltaY;
            int offset = getX() - paddle.getX();
            deltaX = deltaX + (offset/10);
            if (deltaX > 7) {
                deltaX = 7;
            }
            if (deltaX < -7) {
                deltaX = -7;
            }
             
        }           
    }
     
    public void move(int dist)
    {
        setLocation (getX() + dist, getY());
    }
     
     
 
    private void makeSmoke()
    {
        count--;
        if (count == 0) {
            getWorld().addObject ( new Smoke(), getX(), getY());
            count = 2;
        }
    }
 
    public void release()
    {
        deltaX = Greenfoot.getRandomNumber(11) - 5;
        deltaY = -5;
        stuck = false;
    }
     
     
 
 
     
}
I think this is all the code that is needed to make the lives.
danpost danpost

2013/12/9

#
I do not see where 'lave', 'love', and 'live' are declared in the SubWorld world class. Also, you would have to check if they are in the world before removing them. For example:
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if (lives == 3 && lave.getWorld() != null) removeObject(lave);
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