Struct bevy_ecs::archetype::Edges

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pub struct Edges { /* private fields */ }
Expand description

Archetypes and bundles form a graph. Adding or removing a bundle moves an Entity to a new Archetype.

Edges caches the results of these moves. Each archetype caches the result of a structural alteration. This can be used to monitor the state of the archetype graph.

Note: This type only contains edges the World has already traversed. If any of functions return None, it doesn’t mean there is guaranteed not to be a result of adding or removing that bundle, but rather that operation that has moved an entity along that edge has not been performed yet.

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impl Edges

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pub fn get_add_bundle(&self, bundle_id: BundleId) -> Option<ArchetypeId>

Checks the cache for the target archetype when adding a bundle to the source archetype. For more information, see EntityWorldMut::insert.

If this returns None, it means there has not been a transition from the source archetype via the provided bundle.

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pub fn get_remove_bundle( &self, bundle_id: BundleId ) -> Option<Option<ArchetypeId>>

Checks the cache for the target archetype when removing a bundle to the source archetype. For more information, see EntityWorldMut::remove.

If this returns None, it means there has not been a transition from the source archetype via the provided bundle.

If this returns Some(None), it means that the bundle cannot be removed from the source archetype.

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pub fn get_take_bundle( &self, bundle_id: BundleId ) -> Option<Option<ArchetypeId>>

Checks the cache for the target archetype when removing a bundle to the source archetype. For more information, see EntityWorldMut::remove.

If this returns None, it means there has not been a transition from the source archetype via the provided bundle.

Trait Implementations§

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impl Default for Edges

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fn default() -> Edges

Returns the “default value” for a type. Read more

Auto Trait Implementations§

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impl Freeze for Edges

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impl RefUnwindSafe for Edges

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impl Send for Edges

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impl Sync for Edges

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impl Unpin for Edges

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impl UnwindSafe for Edges

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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where T: ?Sized,

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> FromWorld for T
where T: Default,

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fn from_world(_world: &mut World) -> T

Creates Self using data from the given World.
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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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type Error = Infallible

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type Error = <U as TryFrom<T>>::Error

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