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EventBus

Struct EventBus 

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pub struct EventBus { /* private fields */ }
Expand description

The type-erased event channels one container owns. DynWorld and DynEcs both embed one, so world-local and group-shared events run on identical machinery: sequence-numbered channels, two-frame buffering driven by update, and exactly-once consumption through per-consumer cursors.

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impl EventBus

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pub fn send<T: Send + Sync + 'static>(&mut self, event: T)

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pub fn read<T: Send + Sync + 'static>(&self) -> &[T]

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pub fn read_frame<T: Send + Sync + 'static>(&self) -> &[T]

The events of type T settled at the last update: the previous frame’s frozen set, broadcast to every reader without a cursor. See EventChannel::read_frame.

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pub fn read_since<T: Send + Sync + 'static>(&self, cursor: u64) -> &[T]

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pub fn consume<T: Send + Sync + 'static>(&self, cursor: &mut u64) -> &[T]

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pub fn sequence<T: Send + Sync + 'static>(&self) -> u64

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pub fn trim<T: Send + Sync + 'static>(&mut self, up_to_sequence: u64)

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pub fn clear<T: Send + Sync + 'static>(&mut self)

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pub fn channel_count(&self) -> usize

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pub fn update(&mut self)

Advances every channel one frame, expiring events past their two-frame window. The containers call this from their step.

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impl Default for EventBus

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fn default() -> EventBus

Returns the “default value” for a type. Read more

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.