Struct ParticleSpawnState 

pub struct ParticleSpawnState {
    pub accumulator: f32,
}

Per-emitter spawn accumulator. The runtime keeps one of these per record and feeds the integer overflow into the compute kernel as spawn_budget each frame. Fractional carry-over keeps low spawn rates honest even when the frame-time is below the per-particle interval.

Fields

accumulator: f32

Fractional particles owed by this emitter, carried forward across frames. Cleared by take_budget after harvesting the integer part.

Implementations

impl ParticleSpawnState

pub fn take_budget( &mut self, dt: f32, spawn_rate: f32, max_particles: u32, ) -> u32

Add this frame’s spawn allotment and pop off the integer part. Returns 0 when the emitter is paused (spawn_rate <= 0).

Trait Implementations

impl Clone for ParticleSpawnState

fn clone(&self) -> ParticleSpawnState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ParticleSpawnState

impl Debug for ParticleSpawnState

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

Formats the value using the given formatter.

impl Default for ParticleSpawnState

fn default() -> ParticleSpawnState

Returns the “default value” for a type.