Struct ArchetypeStore 

pub struct ArchetypeStore { /* private fields */ }

Registry of all archetypes, indexed by layout.

Implementations

impl ArchetypeStore

pub fn new() -> Self

Create an empty store.

pub fn register_column<T: Send + Sync + 'static>(&mut self)

Register a column factory for a component type. Must be called before get_or_create is called with a layout containing that type.

pub fn get_or_create(&mut self, layout: ArchetypeLayout) -> ArchetypeId

Look up or create the archetype for layout.

pub fn get(&self, id: ArchetypeId) -> &Archetype

Get an archetype by ID.

pub fn get_mut(&mut self, id: ArchetypeId) -> &mut Archetype

Get a mutable archetype by ID.

pub fn len(&self) -> usize

Number of archetypes.

pub fn is_empty(&self) -> bool

Whether the store has no archetypes.

pub fn iter(&self) -> impl Iterator<Item = &Archetype>

Iterate all archetypes.

pub fn iter_mut(&mut self) -> impl Iterator<Item = &mut Archetype>

Iterate all archetypes mutably.

pub fn get_two_mut( &mut self, a: ArchetypeId, b: ArchetypeId, ) -> (&mut Archetype, &mut Archetype)

Get mutable references to two different archetypes simultaneously.

Panics if a == b.

Trait Implementations

impl Default for ArchetypeStore

fn default() -> Self

Returns the “default value” for a type.