Trait QueryComponent

pub trait QueryComponent {
    type Item<'world>: QueryComponent;

    // Required methods
    fn get_component_ids() -> Vec<ComponentId> ;
    fn get_component<'world>(
        world: UnsafeWorldCell<'world>,
        entity_id: EntityId,
    ) -> Self::Item<'world>;
}

Required Associated Types

type Item<'world>: QueryComponent

Required Methods

fn get_component_ids() -> Vec<ComponentId>

fn get_component<'world>( world: UnsafeWorldCell<'world>, entity_id: EntityId, ) -> Self::Item<'world>

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl<C> QueryComponent for &C

where C: Component + 'static,

type Item<'world> = &'world C

fn get_component_ids() -> Vec<ComponentId>

fn get_component<'world>( world: UnsafeWorldCell<'world>, entity_id: EntityId, ) -> Self::Item<'world>

impl<C> QueryComponent for &mut C

where C: Component + 'static,

type Item<'world> = &'world mut C

fn get_component_ids() -> Vec<ComponentId>

fn get_component<'world>( world: UnsafeWorldCell<'world>, entity_id: EntityId, ) -> Self::Item<'world>

impl<T1> QueryComponent for (T1,)

where T1: QueryComponent,

type Item<'world> = (<T1 as QueryComponent>::Item<'world>,)

fn get_component_ids() -> Vec<ComponentId>

fn get_component<'world>( world: UnsafeWorldCell<'world>, entity_id: EntityId, ) -> Self::Item<'world>

Implementors