Struct Children 

pub struct Children(pub Vec<EntityId>);

A component that lists the direct children of an entity.

This component is typically attached to a parent entity and contains a list of all EntityIds that have this entity as their Parent. It is primarily used for traversing the scene hierarchy downwards (from parent to child).

Note: This component should be managed by a dedicated hierarchy maintenance system to ensure it stays in sync with Parent components on child entities.

Tuple Fields

0: Vec<EntityId>

Trait Implementations

impl Clone for Children

fn clone(&self) -> Children

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Component for Children

fn make_column() -> Box<dyn AnyVec>

where Self: Sized,

Creates this component’s empty storage column. Default: an AoS Vec<Self>.

fn push_into_column(self, column: &mut dyn AnyVec)

where Self: Sized,

Appends self as a new row into its column.

fn copy_row_between(src: &dyn AnyVec, src_row: usize, dst: &mut dyn AnyVec)

where Self: Sized,

Clones row src_row from src into dst (used when an entity migrates between pages on a structural change). Both columns are this component’s column type.

fn clone_from_column(column: &dyn AnyVec, row: usize) -> Self

where Self: Sized,

Reads row row of column as an owned value — the uniform by-value access path that works for both AoS (clone the &T) and field-SoA (gather the fields) layouts. Used by World::clone_component, the Soa<T> query, and the serialization recipe.

fn set_in_column(self, column: &mut dyn AnyVec, row: usize)

where Self: Sized,

Overwrites row row of column with self — the uniform by-value write path for both layouts (AoS assigns the slot; field-SoA scatters into the lanes). Used by World::set_component.

impl Debug for Children

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

Formats the value using the given formatter.

impl Default for Children

fn default() -> Children

Returns the “default value” for a type.

impl PartialEq for Children

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for Children

impl StructuralPartialEq for Children