ObserverDescriptor

bevy::ecs::observer

Struct ObserverDescriptor 

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

Store information about what an Observer observes.

This information is stored inside of the Observer component,

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impl ObserverDescriptor

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pub unsafe fn with_event_keys( self, event_keys: Vec<EventKey>, ) -> ObserverDescriptor

Add the given event_keys to the descriptor.

§Safety

The type of each EventKey in event_keys must match the actual value of the event passed into the observer.

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pub fn with_components(self, components: Vec<ComponentId>) -> ObserverDescriptor

Add the given components to the descriptor.

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pub fn with_entities(self, entities: Vec<Entity>) -> ObserverDescriptor

Add the given entities to the descriptor.

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pub fn event_keys(&self) -> &[EventKey]

Returns the event_keys that the observer is watching.

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pub fn components(&self) -> &[ComponentId]

Returns the components that the observer is watching.

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pub fn entities(&self) -> &[Entity]

Returns the entities that the observer is watching.

Trait Implementations§

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impl Clone for ObserverDescriptor

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fn clone(&self) -> ObserverDescriptor

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Default for ObserverDescriptor

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fn default() -> ObserverDescriptor

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

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Return the T ShaderType for self. When used in AsBindGroup derives, it is safe to assume that all images in self exist.
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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
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Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.
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Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.
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