Trait bevy_ecs::observer::TriggerTargets

pub trait TriggerTargets: Send + Sync + 'static {
    // Required methods
    fn components(&self) -> impl ExactSizeIterator<Item = ComponentId>;
    fn entities(&self) -> impl ExactSizeIterator<Item = Entity>;
}

Represents a collection of targets for a specific Trigger of an Event. Targets can be of type Entity or ComponentId. When a trigger occurs for a given event and TriggerTargets, any Observer that watches for that specific event-target combination will run.

Required Methods

fn components(&self) -> impl ExactSizeIterator<Item = ComponentId>

The components the trigger should target.

fn entities(&self) -> impl ExactSizeIterator<Item = Entity>

The entities the trigger should target.

Object Safety

This trait is not object safe.

Implementations on Foreign Types

impl TriggerTargets for ()

fn components(&self) -> impl ExactSizeIterator<Item = ComponentId>

fn entities(&self) -> impl ExactSizeIterator<Item = Entity>

impl TriggerTargets for Vec<ComponentId>

fn components(&self) -> impl ExactSizeIterator<Item = ComponentId>

fn entities(&self) -> impl ExactSizeIterator<Item = Entity>

impl TriggerTargets for Vec<Entity>

fn components(&self) -> impl ExactSizeIterator<Item = ComponentId>

fn entities(&self) -> impl ExactSizeIterator<Item = Entity>

impl<const N: usize> TriggerTargets for [ComponentId; N]

fn components(&self) -> impl ExactSizeIterator<Item = ComponentId>

fn entities(&self) -> impl ExactSizeIterator<Item = Entity>

impl<const N: usize> TriggerTargets for [Entity; N]

fn components(&self) -> impl ExactSizeIterator<Item = ComponentId>

fn entities(&self) -> impl ExactSizeIterator<Item = Entity>

Implementors

impl TriggerTargets for ComponentId

impl TriggerTargets for Entity