I want a way to ensure a semi-consistant frame-rate of my game across
machines of differing speeds. So, I lifted the following snippet (and
gave it it’s own function) from SL’s “aliens” code.
void WaitFrame(void)
{
static Uint32 next_tick = 0;
Uint32 this_tick;
/* Wait for the next frame */
this_tick = SDL_GetTicks();
if ( this_tick < next_tick ) {
SDL_Delay(next_tick-this_tick);
}
next_tick = this_tick + (1000/FRAMES_PER_SEC);
}
Not completely understanding this, and not having any other test platforms
significantly faster than my machine, I was just wondering if this was a
valid way to ensure constant frame-rate… or if I had just
missinterpreted the original code and it’s useless as I’m using it.
Or, I’m always open to other suggestions… 
Thx in advance.–
Sam Hart http://www.physics.arizona.edu/~hart/
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