syncing a program with the system clock
Author
Does anyone have an article or any information on how this is done? Any resources would be great.
Author
Im looking for more of an article describing the concept than any specific function.
Check out the articles here:
http://www.mvps.org/directx/indexes/game_timing.htm
They provide a decent framework for setting up a timing loop in accordance with system time and running your game at a suitable rate.
http://www.mvps.org/directx/indexes/game_timing.htm
They provide a decent framework for setting up a timing loop in accordance with system time and running your game at a suitable rate.
Btw, on Windows with QueryPerformance, is there a way to avoid the timing to "block" during a very short period (this often happens when the system swaps during maybe 1/10 of sec). I sometimes have jerky motion and I wanted to know if you have the same problems. I update the timer once at the beginning of the main loop and stores the result in float format. Then I use the delta_time between two frames to update the velocity, position,...
[edited by - bucheron on October 12, 2003 4:44:01 AM]
[edited by - bucheron on October 12, 2003 4:44:01 AM]
Have you tried using an average for your dtime? It smoothes out most small jerks.
In pseudocode
In pseudocode
delta_time = CurrentTime - Previoustime;
smooth_time = smooth_time*20 + delta_time;
smooth_time = smooth_time / 21;
UpdatePhysics(smooth_time);
This topic is closed to new replies.
Advertisement
Popular Topics
Advertisement
