Struct Time 

pub struct Time { /* private fields */ }

Time state for tracking frame timing.

Tracks the current time, delta time since last frame, and accumulated time.

Implementations

impl Time

pub fn new() -> Self

Creates a new time tracker.

pub fn with_fixed_timestep(fixed_hz: f64) -> Self

Creates a time tracker with a custom fixed timestep.

pub fn update(&mut self)

Updates the time state. Call once per frame.

pub fn update_with_delta(&mut self, delta: Duration)

Updates with a specific delta time (useful for testing or replays).

pub fn elapsed(&self) -> Duration

Returns the time elapsed since the start.

pub fn elapsed_secs(&self) -> f32

Returns the time elapsed in seconds.

pub fn elapsed_secs_f64(&self) -> f64

Returns the time elapsed in seconds (f64).

pub fn delta(&self) -> Duration

Returns the delta time since the last frame.

pub fn delta_secs(&self) -> f32

Returns the delta time in seconds.

pub fn delta_secs_f64(&self) -> f64

Returns the delta time in seconds (f64).

pub fn fixed_timestep(&self) -> Duration

Returns the fixed timestep duration.

pub fn fixed_timestep_secs(&self) -> f32

Returns the fixed timestep in seconds.

pub fn set_fixed_timestep(&mut self, timestep: Duration)

Sets the fixed timestep.

pub fn set_fixed_timestep_hz(&mut self, hz: f64)

Sets the fixed timestep from a frequency in Hz.

pub fn should_do_fixed_update(&mut self) -> bool

Checks if a fixed timestep update should run.

Call this in a loop to consume accumulated time:

while time.should_do_fixed_update() {
    physics_step(time.fixed_timestep_secs());
}

pub fn interpolation_factor(&self) -> f32

Returns the interpolation factor for rendering between fixed updates.

Use this to interpolate visual positions between physics states.

pub fn frame_count(&self) -> u64

Returns the current frame count.

pub fn fps(&self) -> f64

Returns the average frames per second.

pub fn time_scale(&self) -> f64

Returns the time scale multiplier.

pub fn set_time_scale(&mut self, scale: f64)

Sets the time scale multiplier.

• 1.0 = normal speed
• 0.5 = half speed (slow motion)
• 2.0 = double speed
• 0.0 = paused

pub fn pause(&mut self)

Pauses time (sets scale to 0).

pub fn resume(&mut self)

Resumes time at normal speed.

pub fn is_paused(&self) -> bool

Returns true if time is paused.

pub fn start_instant(&self) -> Instant

Returns the instant when the timer was started.

pub fn reset(&mut self)

Resets all time tracking to initial state.

Trait Implementations

impl Clone for Time

fn clone(&self) -> Time

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Time

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Time

fn default() -> Self

Returns the “default value” for a type.