Struct PriorityEventWriter 

pub struct PriorityEventWriter<'w, 's, E: PriorityEvent> { /* private fields */ }

Implementations

impl<E: PriorityEvent> PriorityEventWriter<'_, '_, E>

pub fn send(&mut self, event: E, prio: u32)

pub fn send_batch(&mut self, events: impl Iterator<Item = E>, prio: u32)

pub fn send_default(&mut self, prio: u32)

where E: Default,

Trait Implementations

impl<E: PriorityEvent> SystemParam for PriorityEventWriter<'_, '_, E>

type State = FetchState<E>

Used to store data which persists across invocations of a system.

type Item<'w, 's> = PriorityEventWriter<'w, 's, E>

The item type returned when constructing this system param. The value of this associated type should be Self, instantiated with new lifetimes.

fn init_state(world: &mut World, system_meta: &mut SystemMeta) -> Self::State

Registers any World access used by this SystemParam and creates a new instance of this param’s State.

unsafe fn new_archetype( state: &mut Self::State, archetype: &Archetype, system_meta: &mut SystemMeta, )

For the specified Archetype, registers the components accessed by this SystemParam (if applicable).a

fn apply(state: &mut Self::State, system_meta: &SystemMeta, world: &mut World)

Applies any deferred mutations stored in this SystemParam’s state. This is used to apply Commands during apply_deferred.

fn queue( state: &mut Self::State, system_meta: &SystemMeta, world: DeferredWorld<'_>, )

Queues any deferred mutations to be applied at the next apply_deferred.

unsafe fn validate_param<'w, 's>( state: &'s Self::State, system_meta: &SystemMeta, world: UnsafeWorldCell<'w>, ) -> bool

Validates that the param can be acquired by the get_param. Built-in executors use this to prevent systems with invalid params from running. For nested SystemParams validation will fail if any delegated validation fails.

unsafe fn get_param<'w, 's>( state: &'s mut Self::State, system_meta: &SystemMeta, world: UnsafeWorldCell<'w>, change_tick: Tick, ) -> Self::Item<'w, 's>

Creates a parameter to be passed into a SystemParamFunction.

impl<'w, 's, E: PriorityEvent> ReadOnlySystemParam for PriorityEventWriter<'w, 's, E>

where ResMut<'w, PriorityEvents<E>>: ReadOnlySystemParam, PhantomData<&'s usize>: ReadOnlySystemParam,