bevy_ecs::component

Struct ComponentTicks

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

Records when a component or resource was added and when it was last mutably dereferenced (or added).

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impl ComponentTicks

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pub fn is_added(&self, last_run: Tick, this_run: Tick) -> bool

Returns true if the component or resource was added after the system last ran (or the system is running for the first time).

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pub fn is_changed(&self, last_run: Tick, this_run: Tick) -> bool

Returns true if the component or resource was added or mutably dereferenced after the system last ran (or the system is running for the first time).

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pub fn last_changed_tick(&self) -> Tick

Returns the tick recording the time this component or resource was most recently changed.

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pub fn added_tick(&self) -> Tick

Returns the tick recording the time this component or resource was added.

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pub fn set_changed(&mut self, change_tick: Tick)

Manually sets the change tick.

This is normally done automatically via the DerefMut implementation on Mut<T>, ResMut<T>, etc. However, components and resources that make use of interior mutability might require manual updates.

§Example
let world: World = unimplemented!();
let component_ticks: ComponentTicks = unimplemented!();

component_ticks.set_changed(world.read_change_tick());

Trait Implementations§

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impl Clone for ComponentTicks

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fn clone(&self) -> ComponentTicks

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for ComponentTicks

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Copy for ComponentTicks

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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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. 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> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

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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> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. 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.
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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

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where T: Send,