On Feb 28, 8:33 pm, "Daniel Pitts" <googlegrou...@coloraura.com>
wrote:
> On Feb 28, 8:01 am, "stinkinric...@googlemail.com"
>
>
>
> <stinkinric...@googlemail.com> wrote:
> > Hello. I have the following class:
>
> > import javax.swing.*;
> > import java.awt.event.*;
>
> > class Die extends JLabel implements ActionListener
> > {
> > private int counter;
> > private Timer dieTm = new Timer(70, this);
> > private int dieValue;
> > private ImageIcon[] dieImg = new ImageIcon[6];
>
> > public Die()
> > {
> > ClassLoader cldr = this.getClass().getClassLoader();
> > for(int i = 1; i<7; i++)
> > dieImg[i-1] = new ImageIcon(cldr.getResource(i +".gif"));
> > }
>
> > public int doRoll()
> > {
> > setVisible(true);
> > counter = 0;
> > dieTm.start();
>
> > while(dieTm.isRunning());
>
> > dieValue = (int)Math.ceil((Math.random()*6));
>
> > setIcon(dieImg[dieValue-1]);
> > return dieValue;
> > }
>
> > public void actionPerformed(ActionEvent e)
> > {
> > setIcon(dieImg[(int)Math.ceil((Math.random()*6))-1]);
> > counter++;
> > System.out.println(counter);
> > if (counter == 10) dieTm.stop();
> > }
>
> > }
>
> > That should animate a dice rolling and stop at a value. It works fine
> > when I call it within the code, but when I call it from an action
> > Listener the timer's action listener doesn't run, but the timer
> > isRunning returns true so it ends up in an infinite While loop waiting
> > for it to finish.
>
> > Any ideas? Thanks!
>
> Ah, I see the problem...
>
> doRoll blocks until dieTm.stop() is called... The problem is, that
> the Timer event won't be able to be dispatched until doRoll returns,
> which means that actionPerformed won't be called, which means
> dieTm.stop() won't be called, which means... DEADLOCK!
>
> public int doRoll() {
> setVisible(true);
> counter = 0;
> dieValue = (int)Math.ceil((Math.random()*6));
> dieTm.start();
> return dieValue;
>
> }
>
> public void actionPerformed(ActionEvent e) {
> setIcon(dieImg[(int)Math.ceil((Math.random()*6))-1]);
> counter++;
> System.out.println(counter);
> if (counter == 10) {
> dieTm.stop();
> setIcon(dieImg[dieValue-1]);
> return dieValue;
> }
>
> }
Ahhh! Genius! Thank you very much for both of your help! It works
well!
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