Comments for gafferongames.com

Comment on UDP vs. TCP by Where there's a will, be fast » Simple game architecture – part 2: playing with yourself

Tue, 07 Sep 2010 17:03:11 +0000

[...] Gaffer on Games [...]

Comment on Fix Your Timestep! by Glenn Fiedler

Glenn Fiedler — Tue, 07 Sep 2010 03:39:02 +0000

There is more to come… an analysis of input latency and multithreaded approaches etc. but these will have to wait for a bit later. I felt the old article was getting a bit stale and I’m a bit happier with it now! cheers

Comment on Fix Your Timestep! by Mitchell

Mitchell — Mon, 06 Sep 2010 21:58:41 +0000

Yea, that’s what I meant, thanks a lot for covering it, I understand it better now.

Comment on Fix Your Timestep! by Glenn Fiedler

Glenn Fiedler — Mon, 06 Sep 2010 18:50:55 +0000

I’ve published the article update, let me know what you think!

Comment on Fix Your Timestep! by Glenn Fiedler

Glenn Fiedler — Mon, 06 Sep 2010 03:18:07 +0000

It’s a lot simpler but it does not step forward with fixed delta time. If you don’t care about completely fixed delta time then it’s a perfectly good technique. I have a reworked version of this article which includes this as one of the options discussed.

Comment on Fix Your Timestep! by Mitchell

Mitchell — Sat, 04 Sep 2010 23:56:54 +0000

Wouldn’t it be a lot simpler to just have a max time delta, so a physics step is never bigger than that maximum? Like this, keeping with your pseudocode:

double currentTime = hires_time_in_seconds();
State state;
double maxdt = 1.0 / 60.0;

while ( !quit )
{
double newTime = hires_time_in_seconds();
double dt = newTime – currentTime;
currentTime = newTime;

while (dt > maxdt) {
state.physicsStep(maxdt);
dt -= maxdt;
}
state.physicsStep(dt);

render(state);
}

Comment on GDC 2010 Networked Physics Slides + Demo by Marcelo

Marcelo — Mon, 30 Aug 2010 06:07:18 +0000

Hey, Glenn.

I’ve put the first version of the instructions and code up on github, here: http://github.com/malvim/fiedlerscubes, if you want to take a look.

Thanks!

Comment on GDC 2010 Networked Physics Slides + Demo by Glenn Fiedler

Glenn Fiedler — Thu, 26 Aug 2010 05:42:51 +0000

of course, feel free – thanks

Comment on GDC 2010 Networked Physics Slides + Demo by Marcelo

Marcelo — Tue, 24 Aug 2010 20:27:07 +0000

Hi, Glenn.

I pinged you on twitter about this, but it was just too short! So I hope it’s ok to ask you here as well:

Since I had some difficulty in compiling your demo on my machine, I have written some instructions and put ode’s source along your files as well.

Would it be ok for me to publish that on github for other people that might have the same problem? I would, obviously, link to this article on your site. The intention is merely to help others that might be trying to learn from your code, as I am.

Thanks!

Comment on GDC 2010 Networked Physics Slides + Demo by Marcelo

Marcelo — Sat, 14 Aug 2010 17:42:38 +0000

Yeah, I really could not run from MacPorts’ ode, but I was able to compile ode to a library with help from this link: http://brockwoolf.com/blog/compile-ode-0-11-0-on-mac-os-x-10-6;
Instead of the dll, I used config=releasesinglelib and compiled the demo using the resulting ode lib.

Thanks again for these demos!

Cheers.