Thanks to both of you again. I'm not sure the Overlay class would be my first choice, but I'll give it a try to see what happens. And Egon, a lot of my games use animated gifs. You load them as you would a static image, but with every iteration of the game loop Java2D draws a different frame (and loops them too).

I actually solved the ArrayIndexOutOfBoundsException. That little program I had written over a few years (it was the first one I built with jPCT) and it uses both the software and the hardware renderer (not at the same time obviously). And in changing it a million times I had introduced a stupid glitch in which I called run in one part of it (one attempt at getting the non-canvas OpenGL renderer to use the software loop), and started a separate thread that called it. So sometimes, draw() was being called twice at the same time (and before it draws it moves the objects). So that's that.

But now here's a question: what's the point of using AWTGLCanvas if the FrameBuffer's Graphics object will still be null (or useless, whichever it is)? I can no more use canvas.getGraphics()'s Graphics instance than I could a frame's (I can, but the screen will flicker). So is this a jPCT bug (I hope so)?

I will look into the KeyMapper, thanks.

For my other game, I told you about this already: ever since I switched the renderer from the old hardware method to the AWTGLCanvas, I keep getting ArrayIndexOutOfBoundsExceptions. No event threads either draw or change the models, and all the draw() calls are in a single game loop. So what are all the circumstances in which the World.draw(FrameBuffer) method might throw this right after a succesful call to World.renderScene(FrameBuffer)?

And the joystick uses a button for accelerating and another for braking. as opposed to up and down like the keyboard.

Egon, I really hate showing my stuff to people because I really hate criticism, but here it goes: http://www.agpgames.com

All but the starship game is working to the point of showing it (if maybe not yet bragging!). Check out the racer. And by the way, I didn't do collision between the two cars yet. Thanks a whole lot both to you and to paulscode for the help with the opponent car. Street Fighter was a family joke between me, my wife my brother-in-law and his girlfriend (now wife). I'm still going to add blood and black eyes. All games are meant for an analog joystick, even if they work (badly) with the keyboard.

But it wasn't able until I loaded them through ImageIcon. I can't explain it either. Anyway, as long as it works I am happy. I will post you a link of that racing game you liked soon. At this point I'm just working out the collision-detection. And here's a question: invisibility won't affect collision-detection, will it (I thought once that it did but I hope I'm wrong)?

Oh, and I was going to write that I think the latest version of Firefox changed the way it handles its cache, because all of a sudden I can run, change, recompile, repackage, and run again without it giving me headaches, which is making it much easier on me to test my stuff.

It's neither a typo nor the only way I tried it. This: manager.addTexture("jaguarsk.jpg", new Texture(this.getClass().getResourceAsStream("RacerModels/Textures/jaguarsk.jpg"))); doesn't work either (same security error).

Actually, I'm beginning to think it's the following method (though the JVM's message doesn't get that far). Note that I left commented-out code that isn't always commented out. Just before the ArrayIndexOutOfBoundsException, "Left drawAxisRep()" doesn't get printed. And yes, it only happens with the hardware renderer:

      private void drawAxisRep() {
SimpleVector position = xWing.getTransformedCenter();
SimpleVector xPoint1 = Interact2D.project3D2D(camera, buffer, new SimpleVector(position.x-8f, position.y, position.z));
SimpleVector xPoint2 = Interact2D.project3D2D(camera, buffer, new SimpleVector(position.x+8f, position.y, position.z));
SimpleVector yPoint1 = Interact2D.project3D2D(camera, buffer, new SimpleVector(position.x, position.y-8f, position.z));
SimpleVector yPoint2 = Interact2D.project3D2D(camera, buffer, new SimpleVector(position.x, position.y+8f, position.z));
SimpleVector zPoint1 = Interact2D.project3D2D(camera, buffer, new SimpleVector(position.x, position.y, position.z-8f));
SimpleVector zPoint2 = Interact2D.project3D2D(camera, buffer, new SimpleVector(position.x, position.y, position.z+8f));
Graphics2D g = null;
// if (software)
      g = (Graphics2D)buffer.getGraphics();
/* else {
      Drawable drawable = Display.getDrawable();
      if (drawable instanceof AWTGLCanvas)
// g =(Graphics2D) ((AWTGLCanvas)drawable).getGraphics();
g = awtGlCanvas.getGraphics();
}
*/
if (g == null)
      return;
g.setStroke(new BasicStroke(4));
g.translate(300, 200);
g.setColor(Color.red);
g.drawLine((int)xPoint1.x, (int)xPoint1.y, (int)xPoint2.x, (int)xPoint2.y);
g.setColor(Color.green);
g.drawLine((int)yPoint1.x, (int)yPoint1.y, (int)yPoint2.x, (int)yPoint2.y);
g.setColor(Color.blue);
g.drawLine((int)zPoint1.x, (int)zPoint1.y, (int)zPoint2.x, (int)zPoint2.y);
System.out.println("Left drawAxisRep().");
      }