Struct DensityEntity 

pub struct DensityEntity {

    pub particles: Vec<DensityParticle>,
    pub shape_field: ShapeField,
    pub position: Vec3,
    pub hp_ratio: f32,
    pub binding_strength: f32,
    pub base_binding: f32,
    pub max_particles: u32,
    pub breath_phase: f32,
    pub breath_rate: f32,
    pub breath_amplitude: f32,
    pub damping: f32,
    pub jitter: f32,
    pub base_color: Vec4,
    pub alive: bool,
    pub death_time: f32,
    pub time: f32,
    pub name: String,
    pub id: u32,
    pub center_of_mass: Vec2,
}

An entity composed of thousands of particles forming a shape through density.

Fields

particles: Vec<DensityParticle>

All particles in the cloud.

shape_field: ShapeField

Shape definition (bones).

position: Vec3

World position.

hp_ratio: f32

HP ratio (1.0 = full, 0.0 = dead).

binding_strength: f32

Global binding strength (spring constant toward target).

base_binding: f32

Base binding strength (full HP value).

max_particles: u32

Maximum particle count (decreases permanently on crits).

breath_phase: f32

Breathing phase.

breath_rate: f32

Breathing rate.

breath_amplitude: f32

Breathing amplitude.

damping: f32

Global damping.

jitter: f32

Jitter strength (shimmer).

base_color: Vec4

Base color for the entity.

alive: bool

Whether the entity is alive.

death_time: f32

Time since death.

time: f32

Accumulated time.

name: String

Entity name.

id: u32

Unique ID.

center_of_mass: Vec2

Center of mass (computed).

Implementations

impl DensityEntity

pub fn new( name: &str, position: Vec3, shape: ShapeField, particle_count: u32, color: Vec4, ) -> Self

Create a new density entity from a shape field and particle count.

pub fn tick(&mut self, dt: f32)

Tick the entity (physics, breathing, HP effects).

pub fn compute_center_of_mass(&mut self)

Compute center of mass of alive particles.

pub fn alive_count(&self) -> u32

Count alive particles.

pub fn apply_hit(&mut self, impact_pos: Vec2, damage: f32, radius: f32)

Apply a hit: particles near impact receive impulse, binding temporarily reduced.

pub fn apply_crit(&mut self, impact_pos: Vec2, damage: f32)

Crit hit: permanently kill some particles.

pub fn die(&mut self)

Trigger death: all particles scatter.

pub fn is_dissolved(&self) -> bool

Whether the entity has fully dissolved (all emission faded).

pub fn bounds(&self) -> (Vec2, Vec2)

Bounding box of alive particles.

Trait Implementations

impl Clone for DensityEntity

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DensityEntity

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

Formats the value using the given formatter.