Dice Program

[Chris G Johnson]

I have got a Dice program that displays dice on a JPanel in the form of a button.

To instantiate the Jbuttons/dice I use:

Dice die1 = new Dice(diceModel.getFaceNumber());

This applies a corresponding face image with the number that is retrieved.

If I click the button the rollDice method is called which retrieves another random number and gets a new face image. The problem I have is that I don't know how to apply this face image to die1 and how to repaint it on the panel.

I have tried using Dice die1 = new(etc, etc, but I just get a totally different dice. All I want is to refresh the current die1 button with a new image. Any ideas?

The roll Dice method uses setIcon(icon) and I'm pretty sure that the correct image is being generated its just that I can't seem to display it.

[David Harkness]

Please post the Dice class so we can see where the problem is. Does Dice extend JButton? If so, you should be able to setIcon() on it again when rolling without having to repaint it yourself.

[Chris G Johnson]

Yeah it does extend JButton , but I can't post the code at the minute as i'm at work. I will post it about 5.00pm. Cheers

[Chris G Johnson]

This is the Dice class:-

public class Dice extends JButton
{
 
      private static Random rand = new Random((new GregorianCalendar()).getTimeInMillis());
          private BufferedReader imageFile=null;
          private final int NUMBEROFFACES = 6;//we can have other shapes of die
 
          private final String diceFaceImageDirectory = "." + File.separatorChar + "bigimages";
          private String diceImagePathName=null; // to be constructed
 
          private int faceValue;
          private final String IMAGENAMEROOT = "dice0";
          private final String SUFFIX = "gif";
          
         private diceView diceViewObj;
       
       public Dice(diceView dView)
  {
diceViewObj = dView;
  }
  
        
public Dice() {
 
       diceView dv = new diceView();
           setFaceNumberOnly( rand.nextInt(NUMBEROFFACES) + 1);
         setUpDice();
      }
 
       public Dice (int faceNumber) {
   super(String.valueOf(faceNumber));
 
         if (faceNumber >0 && faceNumber <= NUMBEROFFACES) { //ok
            setFaceNumberOnly(faceNumber);
         }
         else { //get random value
            setFaceNumberOnly( rand.nextInt(NUMBEROFFACES) + 1);
         }
         setUpDice();
            }
 
       public void displayFace (int faceNumber) {
         if(faceNumber >0 && faceNumber <=NUMBEROFFACES) { //ok
 
            ImageIcon icon = new ImageIcon(diceImagePathName + faceNumber + "." + SUFFIX);
            setIcon(icon);
            repaint();
            }
      }
      
      private void setUpDice() {
          diceImagePathName = diceFaceImageDirectory + File.separatorChar
            + IMAGENAMEROOT;
         if(faceValue >0 && faceValue <= NUMBEROFFACES) {
            ImageIcon icon = new ImageIcon(diceImagePathName + faceValue + "." + SUFFIX);
            System.out.println((ImageIcon)icon);
                  setIcon(icon);
              System.out.println("setup dice done");
                     }
           }
  
       public int getFaceNumber()
       {
         return faceValue;
       }  
 
    public void setFaceNumberOnly(int number) {
         faceValue = number;
    }
 
    public void rollDice() {
         setFaceNumberOnly(rand.nextInt(NUMBEROFFACES) + 1);
         setUpDice();
         diceViewObj.repaintPan();
    }
 
/*public void paint(Graphics g)
{
g.setColor(Color.blue);
g.drawString("Hello",20,20);
g.drawImage(((ImageIcon)getIcon()).getImage(), 300, 300, this);
System.out.println("drawn dice");
getIcon().paintIcon(this, g, 300, 300);
System.out.println("paintIcon dice");
System.out.println(((ImageIcon)getIcon()).getImage());
System.out.println("painted dice");
 
} */

This is my diceView class:-

 
class diceView extends JFrame implements ActionListener
{
private JFrame userVFr;
JPanel p = new JPanel();
private diceController diceContObj;
private Dice diceModObj;
Dice die1;
Dice die2;
Dice die3;
Dice die4;
Dice die5;
Dice die6;


public diceView()
{
super("Dice Roll Game");
diceModObj = new Dice(this);
    diceContObj = new diceController(this,diceModObj);
    drawUserGUI();
    //int faceNum = getfaceNumber();
//ImageIcon die1 = new ImageIcon(Dice.getIcon(icon));
 }

public void drawUserGUI()
    {
   getContentPane().add(p);
     p.setLayout(new FlowLayout());
     die1 = new Dice(diceModObj.getFaceNumber());
    die2 = new Dice(diceModObj.getFaceNumber());
    die3 = new Dice(diceModObj.getFaceNumber());
    die4 = new Dice(diceModObj.getFaceNumber());
    die5 = new Dice(diceModObj.getFaceNumber());
    die6 = new Dice(diceModObj.getFaceNumber());
    p.add(die1);
    die1.addActionListener(this);
    p.add(die2);
    die2.addActionListener(this);
    p.add(die3);
    die3.addActionListener(this);
    p.add(die4);
    die4.addActionListener(this);
    p.add(die5);
    die5.addActionListener(this);
    p.add(die6);
    die6.addActionListener(this);
    System.out.println("added dice");
    p.repaint();
setSize(900,600);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setVisible(true);
     }
     
     public void repaintPan()
     {
     p.repaint();
     }
     
     public void actionPerformed(ActionEvent ae)
     {
         
         if(ae.getSource() == die1)
     {
     diceModObj.rollDice();
     System.out.println("Face Number is : "+diceModObj.getFaceNumber());
     p.repaint();
       }
     }
       
} 

[Andy Rayner]

do you happen to be at leeds met university doing software development techniques? *grins*