Struct ObserverDescriptor

pub struct ObserverDescriptor { /* private fields */ }

A description of what an Observer observes.

Implementations

impl ObserverDescriptor

pub unsafe fn with_events(self, events: Vec<ComponentId>) -> Self

Add the given events to the descriptor.

Safety

The type of each ComponentId in events must match the actual value of the event passed into the observer.

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

Add the given components to the descriptor.

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

Add the given entities to the descriptor.

Trait Implementations

impl Clone for ObserverDescriptor

fn clone(&self) -> ObserverDescriptor

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Default for ObserverDescriptor

fn default() -> ObserverDescriptor

Returns the “default value” for a type.