"Pulsating" effect...what's the proper method?

[nightcracker]

Originally Posted by Hati-EK last_update = last_update -0.25 is more precise and does not skip seconds (even if this would just be some miliseconds) than reseting the whole value to 0 - (ie last_update could be 0.25182965 - so you would missing 0.00182965 - if you have this ~1000 times there's something missing

Nope, because THIS time if you run at 120 fps then the function would run a lot more then when at 10 fps.