Struct FixedTimestep 

pub struct FixedTimestep { /* private fields */ }

Accumulator for fixed-timestep game / physics loops (e.g. 50 Hz or 60 Hz).

Decouples erratic render framerates from deterministic fixed update steps, avoiding physics instability on microcontrollers with variable SPI display scanout times.

Implementations

impl FixedTimestep

pub const fn from_hz(hz: f32, max_substeps: u32) -> Self

Create a fixed timestep with a given step duration (e.g. 1.0 / 60.0) and a maximum number of substeps per tick (e.g. 4) to prevent spiral-of-death.

pub const fn from_step(step: f32, max_substeps: u32) -> Self

Create from step delta in seconds.

pub fn update(&mut self, frame_dt: f32) -> FixedStepIter

Feed frame delta-time frame_dt and return an iterator of fixed timesteps to simulate.

pub fn alpha(&self) -> f32

Interpolation factor alpha in 0.0..1.0 between the previous and current fixed states. Useful for smooth render state interpolation.

pub fn step_secs(&self) -> f32

Fixed step delta in seconds.

Trait Implementations

impl Clone for FixedTimestep

fn clone(&self) -> FixedTimestep

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for FixedTimestep

impl Debug for FixedTimestep

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

Formats the value using the given formatter.

impl PartialEq for FixedTimestep

fn eq(&self, other: &FixedTimestep) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for FixedTimestep