Struct Gravity 

pub struct Gravity {
    pub acceleration: Vector2,
}

Constant acceleration, applied before semi-implicit integration.

Fields

acceleration: Vector2

Acceleration in scene units per second squared.

Implementations

impl Gravity

pub fn new(acceleration: Vector2) -> Self

Creates a constant acceleration.

Trait Implementations

impl Clone for Gravity

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Gravity

impl Debug for Gravity

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

Formats the value using the given formatter.

impl ParticleModifier for Gravity

fn apply( &self, particle: &mut Particle, step: f32, _: Time, _: &mut Random, ) -> Result<(), ValidationError>

Updates one live particle; index and canonical age remain engine-owned.

fn resets_color(&self) -> bool

Requests birth-color restoration before the ordered modifier chain. Multiplicative lifetime energy curves use this to avoid frame-count accumulation.

fn work(&self) -> u64

Conservative per-particle operator work charged before replay.

fn apply_event( &self, particle: &mut Particle, step_seconds: f32, time: Time, random: &mut Random, ) -> Result<bool, ValidationError>

Optional predicted-step collision response, preserving the original callback API.