head follows mouse movement like quake?

OpenGL OpenGL: Basic Coding
1

is there any refeernce site or tutorials that details how to make the “head view” follows the mouse movement like in quake or other similiar games?

thanks

2

Just measure how long the mousepointer has moved since last frame and use that as rotation value (addative).

3

in quake3(probably in other too) they interpolate mouse movement between present and previous frame, so it looks a bit smoother (but this way you loose some accuracy)…
and of course mouse movement is somehow scaled by frametime…

4

First I also thought you’d need to scale the mouse movement by the frametime, but it turned out it wasn’t so!.. Or atleast it looked wrong to me when I did.

If you think about it, if a frame takes longer to draw, the user can move the mouse longer before the program measure it… It becomes “naturally” multiplied

5

yes, that’s true…
for example when frametime == 1sec, you’ll see what you should see past second
but actually there’s no way to avoid it - what makes it unnoticable in games is high fps, otherwise it’s a pain anyway