how do i add another ball in this program plzz help?

what im trying to do is that im working on this program call greenfoot and the subprogram is call breakout and the program work by bouncing the ball to hit other bricks

- image is in attachment folder.

- my problem was im trying get the program to run in 2 ball not one ball (which its already has)

code:

public void newBall() 
{
/* increment the number of balls created */
numBalls++;

/* check if used 3 or more */
if (numBalls > 10)
{
message.setText("Game over and you lost.");
Greenfoot.stopSimulation();
}
/* create new ball and tell the user the number of balls created */
else
{
addObject(new Ball(), (WIDTH / 2), 222);
message.setText("Ball " + numBalls);
}
}

post below if have any question (im really apreciated if anyone can help me out)

Attached Files

breakout pic.bmp 576.05K 132 downloads

Edited by WingedPanther, 22 May 2009 - 07:25 AM.
add code tags (the # button)

sure but im telling you its alot the code above that i gave you are i think the main point of where it suppose to be change or fixes about add another ball.

full list of code below:

import greenfoot.*;  // (World, Actor, GreenfootImage, and Greenfoot)
import java.awt.Color;
import java.util.List;

/**
 * Holds a game of breakout. In breakout there are 10 rows of bricks that the user
 * must get rid of to win.  To get rid of bricks hit them with the ball.  Use the paddle
 * to hit the ball.  Use the left and right arrow keys to move the paddle.  The user has
 * 3 balls to use to try to win the game and if the last ball gets past the paddle the user
 * loses.  
 * 
 * This game is based on Breakout by Eric Roberts who presented it as a nifty assignment 
 * at SIGCSE in 2006 using the Java Task Force libraries.
 * 
 * @author Barbara Ericson, Georgia Tech
 * @version 1.0, April 6, 2007
 */
public class BreakoutWorld extends World
{
   /////////////////// constants //////////////////////////
   
   /** the width of the bricks in pixels (cells) */
   public static final int BRICK_WIDTH = 36; 
   /** the height of the bricks in pixels (cells) */
   public static final int BRICK_HEIGHT = 8; 
   /** the distance between bricks in pixels (cells) */
   public static final int BRICK_SEP = 4;   
   /** the number of bricks per row */
   public static final int NUM_BRICKS_PER_ROW = 10; 
   /** distance from the top edge in pixels (cells) */
   public static final int BRICK_Y_OFFSET = 70;     
   /** the number of pixels per cell */
   public static final int RESOLUTION = 1;          
   /** world width in pixels (cells) */
   public static final int WIDTH = (BRICK_WIDTH + BRICK_SEP) * NUM_BRICKS_PER_ROW + BRICK_SEP; 
   /** world height in pixels (cells) */
   public static final int HEIGHT = 600;   
   /** number of rows of bricks */
   public static final int NUM_ROWS = 10;  
   /** the colors to use for each row of bricks */
   public static final Color[] colorArray = {Color.RED, Color.RED,
      Color.ORANGE, Color.ORANGE, Color.GREEN,Color.GREEN,
      Color.YELLOW,Color.YELLOW,  Color.CYAN, Color.CYAN};
      
   ////////////////// instance fields ///////////////////////////////
  
   /** the number of balls created in the game so far */
   private int numBalls = 0;
  
   /** a message displayed for the user */
   private Message message = null;
  
   //////////// constructors /////////////
  
   /**
    * No argument constructor 
    */
   public BreakoutWorld()
   {
        super (WIDTH, HEIGHT, RESOLUTION);
        setUpBreakout();
   }
  
   /////////////// methods ///////////////
  
   /**
    * Method to get the number of balls created 
    * @return the number of balls created in the game 
    */
   public int getNumBalls() { return numBalls; }
  
   /**
    * Method to add a new ball
    */
   public void newBall() 
   {
       /* increment the number of balls created */
      numBalls++;
      
      /* check if used 3 or more */
      if (numBalls > 10)
      {
          message.setText("Game over and you lost.");
          Greenfoot.stopSimulation();
      }
      /* create new ball and tell the user the number of balls created */
      else
      {
         addObject(new Ball(), (WIDTH / 2), 222);
         message.setText("Ball " + numBalls);
      }
    }
  
    /**
     * Method to check if the game is over and if so tell the user
     * and stop the simulation
     */
    public void checkIfWon()
    {
        List brickList = this.getObjects(Brick.class);
        if (brickList.size() == 0)
        {
            message.setText("You Won!!!!!!");
            Greenfoot.stopSimulation();
        }
    }
  
    /**
     * Method to set up the breakout game
     */
    public void setUpBreakout()
    {
        /* update image */
        updateImage();
        
        /* set up the message */
        message = new Message("Game starting");
        addObject(message,WIDTH/2, 35);
    
        /* set up the bricks */
        setUpBricks();
    
        /* create the paddle */
        addObject(new Paddle(),(WIDTH / 2),HEIGHT - 30);
    
        /* create a new ball */
        newBall();
  
    }
  
    /*
     * Method to set up the bricks in the world 
     */
    private void setUpBricks()
    {
        int yPos = BRICK_HEIGHT / 10 + BRICK_Y_OFFSET;
        int halfWidth = BRICK_WIDTH / 3;

        // addObject(new Brick(Color.RED),4,0);
        for (int row = 2; row < NUM_ROWS; row++, 
             yPos = yPos + BRICK_HEIGHT + BRICK_SEP)
        {
            for (int col = 0, xPos = BRICK_SEP + halfWidth; col < NUM_BRICKS_PER_ROW; 
                 col++, xPos = xPos + BRICK_WIDTH + BRICK_SEP)
            {
                addObject(new Brick(colorArray[row]),xPos,yPos);
            }
        }
        
    }
    
    /**
     * Method to create and set the image for the background 
     */
    public void updateImage()
    {
        GreenfootImage image = new GreenfootImage(WIDTH,HEIGHT);
        image.setColor(new Color(200,200,200));
        image.fillRect(0,0,WIDTH,HEIGHT);
        setBackground(image);
    }
}

Edited by WingedPanther, 29 May 2009 - 07:15 AM.
add code tags (the # button)