Friendly Gameloop to allow tab /focus switch (ALT+TAB)?

[Evil-Devil]

Hi all,

its no problem to create a straight forward rendering, but still I haven't found a way to write a loop that does allow other activities beneath the ogl app.

while (this.running) {
	if (Display.isCloseRequested()) {
		this.running = false;				
		this.dispose();
	}			
		
	if (Display.isActive() && Display.isVisible()) {
		this.render();
		Display.update();
	}
}

My rendering loop is pretty easy, but even starting the application from within eclipse, setting the focus on eclipse and switch back to the ogl app, it does not respond anymore. I would appreciate any suggestions to avoid this as i like to have an app that does allow tab switching.

[CodeBunny]

Here's mine (very abstracted, but fairly straightforward):

protected void run()
{
	start(); // Initializes the game
	while (!shouldExit()) // Checks both a control boolean and Display.isCloseRequested()
	{
		controller.tick(); // Updates the time
		update(controller.delta()); // Updates the game based upon the delta time
		render(); // Renders the game, also calls Display.Update()
		controller.sleep(); // Handles sleeping the thread
	}
	end(); // Handles shutdown.
}

Display.isActive() seems to be bugged. When I added it to my game, it froze just like yours - upon losing focus, it will permanently return false, and also seems to block exit operations from proceeding. I've basically taken the option of not using it whatsoever.

[Obsyd]

If your Display.udpade is not being called it will seem like your app is frozen. (because Dsiplay.update calls Display.processMessages())
Display.processMessages() still needs to be called once in a while.

[delt0r]

I use Display.isActive and it works like a charm. I just sleep 100ms each loop so update is always getting called. I have noticed massive performance penalty with composing desktops. Turning it off works nicely.

[CodeBunny]

Ah, that makes sense. Gotcha.

[Evil-Devil]

If your Display.udpade is not being called it will seem like your app is frozen. (because Dsiplay.update calls Display.processMessages())
Display.processMessages() still needs to be called once in a while.

Ah ok, I'll give it a try

[Evil-Devil]

Sry 4 double post...

It works, thanks alot =)

if (Display.isVisible() && Display.isActive()) {
	this.render();
	Display.update();				
} else {
	Display.processMessages();
}