Module ggez::timer [−] [src]

Timing and measurement functions.

ggez does not try to do any framerate limitation by default. If you want to run at anything other than full-bore max speed all the time, calling sleep() with a duration of 0 will yield to the OS so it has a chance to breathe before continuing with your game, which will prevent it from using 100% CPU unless it really needs to. Enabling vsync by setting vsync in your Conf object is generally the best way to cap your displayed framerate.

For a more detailed tutorial in how to handle frame timings in games, see http://gafferongames.com/game-physics/fix-your-timestep/

Structs

TimeContext

A structure that contains our time-tracking state.

Functions

check_update_time	This function will return true if the time since the last `update()` call has been equal to or greater to the update FPS indicated by the `desired_update_rate`. It keeps track of fractional frames, and does not do any sleeping.
duration_to_f64	A convenience function to convert a Rust `Duration` type to a (less precise but more useful) f64.
f64_to_duration	A convenience function to create a Rust `Duration` type from a (less precise but more useful) f64.
get_average_delta	Gets the average time of a frame, averaged over the last 200 frames.
get_delta	Get the time between the start of the last frame and the current one; in other words, the length of the last frame.
get_fps	Gets the FPS of the game, averaged over the last 200 frames.
get_time_since_start	Returns the time since the game was initialized.
sleep	Pauses the current thread for the target duration. Just calls `std::thread::sleep()` so it's as accurate as that is.
sleep_until_next_frame	This function will attempt to sleep the current thread until the beginning of the next frame should occur, to reach the desired FPS.