pub struct Events<T> { /* private fields */ }Expand description
A double-buffered queue of T events, stored as a singleton resource.
Write with an EventWriter<T> system param, read with an
EventReader<T> system param. An event sent during tick N stays
visible to readers for the rest of tick N and all of tick N + 1, then
is dropped — so a reader running anywhere in either tick sees it exactly
once, regardless of whether it runs before or after the writer that sent
it.
Not usable until registered with
App::add_event, which inserts this
resource and schedules the per-tick aging that gives the two-tick
guarantee above.
Implementations§
Trait Implementations§
Auto Trait Implementations§
impl<T> Freeze for Events<T>
impl<T> RefUnwindSafe for Events<T>where
T: RefUnwindSafe,
impl<T> Send for Events<T>where
T: Send,
impl<T> Sync for Events<T>where
T: Sync,
impl<T> Unpin for Events<T>where
T: Unpin,
impl<T> UnsafeUnpin for Events<T>
impl<T> UnwindSafe for Events<T>where
T: UnwindSafe,
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Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
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Mutably borrows from an owned value. Read more
impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
impl<T> Component for T
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T: Any,
impl<T> Downcast for Twhere
T: Any,
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fn into_either(self, into_left: bool) -> Either<Self, Self>
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self into a Left variant of Either<Self, Self>
if into_left is true.
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Source§fn read_from_little_endian(read: &mut R) -> Result<Self, Error>
fn read_from_little_endian(read: &mut R) -> Result<Self, Error>
Read this value from the supplied reader. Same as
ReadEndian::read_from_little_endian().