animation running slow on some computers

[Mike Crenshaw]

hi
I've made an applet doing an animation. The problem is that it runs great on
some computers and really slow on others. Even fast computers.. (2ghz and
up)..
here is what i do:

private Image background; //544 * 425
private Image object; //66 * 26
private Image doubleBufferImage; //544 * 425
private Graphics doubleBufferGraphics;
private int ox; //new position to draw object
private int oy; //same
....
public void paint(Graphics g) {
doubleBufferGraphics.setClip(0,0,background.getWidth(this),
background.getHeight(this));
doubleBufferGraphics.drawImage(background,0,0,this);
doubleBufferGraphics.setClip(ox, oy, object.getWidth(this),
object.getHeight(this));
doubleBufferGraphics.drawImage(object, ox, oy, this);
g.drawImage(doubleBufferImage, 0, 0, this);
}

any ideas?

heres the whole thing

import java.awt.*;
import java.applet.*;
import java.util.*;
import java.awt.event.*;

public class Test extends Applet implements Runnable, KeyListener{

private Image background;
private Image object;
private Image doubleBufferImage;
private Graphics doubleBufferGraphics;
private MediaTracker tracker;
private int ox;
private int oy;
private Thread t;

public void init() {
tracker = new MediaTracker(this);
background = getImage (getCodeBase (), "background.gif");
object = getImage (getCodeBase (), "object.gif");
tracker.addImage(background,0);
tracker.addImage(object,1);
addKeyListener(this);
try
{
tracker.waitForAll();
}
catch(Exception e){System.out.println("error "+e);}
doubleBufferImage = createImage (background.getWidth(this),
background.getHeight(this));
doubleBufferGraphics= doubleBufferImage.getGraphics ();
}

public void keyReleased(KeyEvent e) {}
public void keyTyped(KeyEvent e) {}
public void keyPressed(KeyEvent e)
{
t = new Thread(this);
t.start();
}

public void run()
{
for (int i = 0; i < 25; i++)
{
ox +=20;
oy +=15;
paint(getGraphics());
}
ox=0;
oy=0;
}

public synchronized void paint(Graphics g) {
doubleBufferGraphics.setClip(0,0,background.getWidth(this),
background.getHeight(this));
doubleBufferGraphics.drawImage(background,0,0,this);
doubleBufferGraphics.setClip(ox, oy, object.getWidth(this),
object.getHeight(this));
doubleBufferGraphics.drawImage(object, ox, oy, this);
g.drawImage(doubleBufferImage, 0, 0, this);
}}

 

[Magnus]

I have a similar problem.
I never had this problem when running MS VM.
Now converted my applet to swing components and using sun plugin.
Are you using sun vm?
Did you solve the problem?