ActionScript 3.0 :: Variable Vs Fixed Timestep In Flash
Jan 25, 2011
This seems to be a popular argument lately, but I'm just looking for some input. I've always used a variable time step in flash, using getTimer, and finding the dt each frame. I then multiply the dt by whatever variables or constants for updates, such as a velocity for example. In mathematical theory, this would keep constant velocity or movement no matter what the framerate, however this is not actually the case.
Lately I've been using lots of particles and collisions, and while I usually see around 50-60, sometimes it will drop to 30 or even 20. That's a big fluxuation. For the times that it does drop, the movement will slow down, until it picks back up again, and it will seem to shoot forward all of a sudden. It's not really as drastic as I make it sound, but it's noticible enough.
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