Enum SpawnCurve 

pub enum SpawnCurve {
    Constant(f32),
    Linear {
        start: f32,
        end: f32,
    },
    SmoothStep {
        start: f32,
        peak: f32,
        end: f32,
    },
    Keyframes(Vec<(f32, f32)>),
    PeriodBurst {
        period: f32,
        burst_count: u32,
        timer: f32,
    },
}

How spawn rate is scheduled over the emitter’s lifetime.

Variants

Constant(f32)

Constant particles per second.

Linear

Linear ramp from start to end rate over lifetime.

Fields

start: f32

end: f32

SmoothStep

Smooth ease-in-out.

Fields

start: f32

peak: f32

end: f32

Keyframes(Vec<(f32, f32)>)

Keyframe table: list of (normalised_time 0..1, rate) pairs.

PeriodBurst

Burst every N seconds: burst_count particles at once.

Fields

period: f32

burst_count: u32

timer: f32

Implementations

impl SpawnCurve

pub fn rate_at(&self, t: f32) -> f32

Evaluate continuous spawn rate at normalised lifetime t (0..1).

Trait Implementations

impl Clone for SpawnCurve

fn clone(&self) -> SpawnCurve

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SpawnCurve

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

Formats the value using the given formatter.