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1  Game Development / Newbie & Debugging Questions / Re: Newbie needs start help :) on: 2004-12-19 17:07:32
and what is that for?  Huh
and whats NewTime()?
i always get a / by 0 exception
2  Game Development / Newbie & Debugging Questions / Newbie needs start help :) on: 2004-12-19 16:46:26
Hi!
Im new to Java game development and dont know where to start...  Cheesy

So that's what i've done already:
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import java.awt.*;
import java.awt.event.*;

public class MainPanel extends Panel implements KeyListener {
      private MyCanvas bier;
      private double xs, ys, x, y;

      public MainPanel() {
            setLayout(null);

            bier = new MyCanvas("bier.jpg");
            bier.setBounds(20, 20, 100, 100);
            add(bier);
            x = bier.getX();
            y = bier.getY();

            Thread t = new Thread(new Runnable() {
                  public void run() {
                        while (true) {
                              try {
                                    Thread.sleep(1000 / 60);
                              } catch (InterruptedException e) {
                                    // TODO Auto-generated catch block
                                   e.printStackTrace();
                              }
                              x += xs;
                              y += ys;
                              bier.setLocation((int) x, (int) y);
                        }
                  }
            });
            t.start();

      }

      public void keyTyped(KeyEvent ev) {
      }

      public void keyPressed(KeyEvent ev) {
            int x = bier.getX(), y = bier.getY();

            if (ev.getKeyCode() == KeyEvent.VK_DOWN)
                  ys += 0.1;
            else if (ev.getKeyCode() == KeyEvent.VK_UP)
                  ys -= 0.1;
            else if (ev.getKeyCode() == KeyEvent.VK_LEFT)
                  xs -= 0.1;
            else if (ev.getKeyCode() == KeyEvent.VK_RIGHT)
                  xs += 0.1;
      }

      public void keyReleased(KeyEvent ev) {
      }

}


public class MyCanvas extends Canvas {
      Image image;

      public MyCanvas(String file) {
            image = Toolkit.getDefaultToolkit().getImage(file);
           
      }
     
      public void paint(Graphics g) {
            if (image != null) {
                  g.drawImage(image, 0, 0, this);
            } else
                  System.out.print("a");
      }
}


I think this is very bad coding, but i dont know how to optimize it.
The problem is that this app doesnt run on every computer at the same speed i think! So how can i fix that (ticks? time?)?
And how can i program a double buffer or hardware accelerated game?

It would be very nice if u could give me some tips! Smiley

BIG THX
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