Struct ParticleEmitter 

pub struct ParticleEmitter { /* private fields */ }

A point emitter that continuously (or in bursts) spawns particles, integrates their motion, and records them into a DrawList as colored circles whose color and size interpolate over each particle’s lifetime.

Implementations

impl ParticleEmitter

Implements creation, simulation, and rendering for ParticleEmitter.

pub fn create(position: Vector2D, config: ParticleConfig) -> ParticleEmitter

Creates an active emitter at the given position with the given config.

Arguments

• Vector2D - The world-space emission point.
• ParticleConfig - The emitter configuration.

Returns

• ParticleEmitter - The new emitter.

pub fn with_defaults(position: Vector2D) -> ParticleEmitter

Creates an active emitter at the given position using the default configuration.

Arguments

• Vector2D - The world-space emission point.

Returns

• ParticleEmitter - The new emitter.

pub fn update(&mut self, delta_time: f64)

Advances the emitter by the given delta time: spawns new particles from the emission budget while active, integrates motion and gravity, and removes expired particles.

Arguments

• f64 - The time elapsed since the last update, in seconds.

pub fn burst(&mut self, count: usize)

Spawns the given number of particles immediately, regardless of the active flag, clamped to the remaining particle capacity.

Arguments

• usize - The number of particles to spawn.

pub fn render(&self, draw_list: &mut DrawList)

Records all live particles into the given draw list as filled circles.

Each particle’s color and radius are interpolated between the configured start and end values by its normalized age.

Arguments

• &mut DrawList - The draw list to record commands into.

pub fn alive_count(&self) -> usize

Returns the number of currently live particles.

Returns

• usize - The live particle count.

pub fn clear(&mut self)

Removes all live particles without changing the active flag.

impl ParticleEmitter

pub fn get_mut_config(&mut self) -> &mut ParticleConfig

pub fn get_active(&self) -> bool

pub fn get_mut_active(&mut self) -> &mut bool

impl ParticleEmitter

pub fn new(position: Vector2D, config: ParticleConfig) -> Self

Trait Implementations

impl Clone for ParticleEmitter

fn clone(&self) -> ParticleEmitter

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ParticleEmitter

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

Formats the value using the given formatter.

impl PartialEq for ParticleEmitter

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ParticleEmitter

impl Updatable for ParticleEmitter

Forwards ParticleEmitter::update through the Updatable trait so emitters can participate in the same generic update loop as entities, animators, scenes, and physics worlds.

fn update(&mut self, delta_time: f64)

Advance the object’s internal state by the given delta time.