Struct Time 

pub struct Time { /* private fields */ }

This tick’s frame timing. Cheap to read every system that needs it — delta_seconds/elapsed_seconds are plain f32, no locking.

Implementations

impl Time

pub fn delta(&self) -> Duration

Time since the previous tick.

pub fn delta_seconds(&self) -> f32

Time::delta as seconds — the number to multiply a per-second rate by (transform.x += speed * time.delta_seconds()).

pub fn elapsed(&self) -> Duration

Time since TimePlugin was built (app startup), as of this tick.

pub fn elapsed_seconds(&self) -> f32

Time::elapsed as seconds.

pub fn fps(&self) -> f32

1.0 / delta_seconds() — this tick’s instantaneous frame rate. 0.0 on the very first tick (delta is still zero) rather than dividing by zero. Jitters frame to frame same as delta itself; average it yourself over a window if you want a smoothed display value.