Struct bevy_ecs::world::EntityMut

source ·
pub struct EntityMut<'w>(/* private fields */);
Expand description

Provides mutable access to a single entity and all of its components.

Contrast with EntityWorldMut, which allows adding and removing components, despawning the entity, and provides mutable access to the entire world. Because of this, EntityWorldMut cannot coexist with any other world accesses.

§Examples

Disjoint mutable access.

fn disjoint_system(
    query1: Query<EntityMut, With<A>>,
    query2: Query<EntityMut, Without<A>>,
) {
    // ...
}

Implementations§

source§

impl<'w> EntityMut<'w>

source

pub fn reborrow(&mut self) -> EntityMut<'_>

Returns a new instance with a shorter lifetime. This is useful if you have &mut EntityMut, but you need EntityMut.

source

pub fn as_readonly(&self) -> EntityRef<'_>

Gets read-only access to all of the entity’s components.

source

pub fn id(&self) -> Entity

Returns the ID of the current entity.

source

pub fn location(&self) -> EntityLocation

Gets metadata indicating the location where the current entity is stored.

source

pub fn archetype(&self) -> &Archetype

Returns the archetype that the current entity belongs to.

source

pub fn contains<T: Component>(&self) -> bool

Returns true if the current entity has a component of type T. Otherwise, this returns false.

§Notes

If you do not know the concrete type of a component, consider using Self::contains_id or Self::contains_type_id.

source

pub fn contains_id(&self, component_id: ComponentId) -> bool

Returns true if the current entity has a component identified by component_id. Otherwise, this returns false.

§Notes
source

pub fn contains_type_id(&self, type_id: TypeId) -> bool

Returns true if the current entity has a component with the type identified by type_id. Otherwise, this returns false.

§Notes
source

pub fn get<T: Component>(&self) -> Option<&T>

Gets access to the component of type T for the current entity. Returns None if the entity does not have a component of type T.

source

pub fn into_borrow<T: Component>(self) -> Option<&'w T>

Consumes self and gets access to the component of type T with the world 'w lifetime for the current entity.

Returns None if the entity does not have a component of type T.

source

pub fn get_ref<T: Component>(&self) -> Option<Ref<'_, T>>

Gets access to the component of type T for the current entity, including change detection information as a Ref.

Returns None if the entity does not have a component of type T.

source

pub fn into_ref<T: Component>(self) -> Option<Ref<'w, T>>

Consumes self and gets access to the component of type T with world 'w lifetime for the current entity, including change detection information as a [Ref<'w>].

Returns None if the entity does not have a component of type T.

source

pub fn get_mut<T: Component>(&mut self) -> Option<Mut<'_, T>>

Gets mutable access to the component of type T for the current entity. Returns None if the entity does not have a component of type T.

source

pub fn into_mut<T: Component>(self) -> Option<Mut<'w, T>>

Consumes self and gets mutable access to the component of type T with the world 'w lifetime for the current entity. Returns None if the entity does not have a component of type T.

source

pub fn get_change_ticks<T: Component>(&self) -> Option<ComponentTicks>

Retrieves the change ticks for the given component. This can be useful for implementing change detection in custom runtimes.

source

pub fn get_change_ticks_by_id( &self, component_id: ComponentId ) -> Option<ComponentTicks>

Retrieves the change ticks for the given ComponentId. This can be useful for implementing change detection in custom runtimes.

You should prefer to use the typed API EntityWorldMut::get_change_ticks where possible and only use this in cases where the actual component types are not known at compile time.

source

pub fn get_by_id(&self, component_id: ComponentId) -> Option<Ptr<'_>>

Gets the component of the given ComponentId from the entity.

You should prefer to use the typed API EntityWorldMut::get where possible and only use this in cases where the actual component types are not known at compile time.

Unlike EntityMut::get, this returns a raw pointer to the component, which is only valid while the EntityMut is alive.

source

pub fn into_borrow_by_id(self, component_id: ComponentId) -> Option<Ptr<'w>>

Consumes self and gets the component of the given ComponentId with world 'w lifetime from the entity.

You should prefer to use the typed API EntityWorldMut::into_borrow where possible and only use this in cases where the actual component types are not known at compile time.

source

pub fn get_mut_by_id( &mut self, component_id: ComponentId ) -> Option<MutUntyped<'_>>

Gets a MutUntyped of the component of the given ComponentId from the entity.

You should prefer to use the typed API EntityMut::get_mut where possible and only use this in cases where the actual component types are not known at compile time.

Unlike EntityMut::get_mut, this returns a raw pointer to the component, which is only valid while the EntityMut is alive.

source

pub fn into_mut_by_id(self, component_id: ComponentId) -> Option<MutUntyped<'w>>

Consumes self and gets a [MutUntyped<'w>] of the component of the given ComponentId with world 'w lifetime from the entity.

You should prefer to use the typed API EntityMut::into_mut where possible and only use this in cases where the actual component types are not known at compile time.

Trait Implementations§

source§

impl<'a> From<&'a EntityMut<'_>> for EntityRef<'a>

source§

fn from(value: &'a EntityMut<'_>) -> Self

Converts to this type from the input type.
source§

impl<'a> From<&'a EntityMut<'_>> for FilteredEntityRef<'a>

source§

fn from(entity: &'a EntityMut<'_>) -> Self

Converts to this type from the input type.
source§

impl<'w> From<&'w mut EntityMut<'_>> for EntityMut<'w>

source§

fn from(value: &'w mut EntityMut<'_>) -> Self

Converts to this type from the input type.
source§

impl<'a> From<&'a mut EntityMut<'_>> for FilteredEntityMut<'a>

source§

fn from(entity: &'a mut EntityMut<'_>) -> Self

Converts to this type from the input type.
source§

impl<'a> From<&'a mut EntityWorldMut<'_>> for EntityMut<'a>

source§

fn from(value: &'a mut EntityWorldMut<'_>) -> Self

Converts to this type from the input type.
source§

impl<'a> From<EntityMut<'a>> for FilteredEntityMut<'a>

source§

fn from(entity: EntityMut<'a>) -> Self

Converts to this type from the input type.
source§

impl<'a> From<EntityMut<'a>> for FilteredEntityRef<'a>

source§

fn from(entity: EntityMut<'a>) -> Self

Converts to this type from the input type.
source§

impl<'w> From<EntityMut<'w>> for EntityRef<'w>

source§

fn from(value: EntityMut<'w>) -> Self

Converts to this type from the input type.
source§

impl<'w> From<EntityWorldMut<'w>> for EntityMut<'w>

source§

fn from(value: EntityWorldMut<'w>) -> Self

Converts to this type from the input type.
source§

impl<'a> QueryData for EntityMut<'a>

SAFETY: access of EntityRef is a subset of EntityMut

§

type ReadOnly = EntityRef<'a>

The read-only variant of this QueryData, which satisfies the ReadOnlyQueryData trait.
source§

impl<'a> TryFrom<&'a mut FilteredEntityMut<'_>> for EntityMut<'a>

§

type Error = TryFromFilteredError

The type returned in the event of a conversion error.
source§

fn try_from(value: &'a mut FilteredEntityMut<'_>) -> Result<Self, Self::Error>

Performs the conversion.
source§

impl<'a> TryFrom<FilteredEntityMut<'a>> for EntityMut<'a>

§

type Error = TryFromFilteredError

The type returned in the event of a conversion error.
source§

fn try_from(value: FilteredEntityMut<'a>) -> Result<Self, Self::Error>

Performs the conversion.
source§

impl<'a> WorldQuery for EntityMut<'a>

SAFETY: The accesses of Self::ReadOnly are a subset of the accesses of Self

§

type Item<'w> = EntityMut<'w>

The item returned by this WorldQuery For QueryData this will be the item returned by the query. For QueryFilter this will be either (), or a bool indicating whether the entity should be included or a tuple of such things.
§

type Fetch<'w> = UnsafeWorldCell<'w>

Per archetype/table state used by this WorldQuery to fetch Self::Item
§

type State = ()

State used to construct a Self::Fetch. This will be cached inside QueryState, so it is best to move as much data / computation here as possible to reduce the cost of constructing Self::Fetch.
source§

fn shrink<'wlong: 'wshort, 'wshort>( item: Self::Item<'wlong> ) -> Self::Item<'wshort>

This function manually implements subtyping for the query items.
source§

unsafe fn init_fetch<'w>( world: UnsafeWorldCell<'w>, _state: &Self::State, _last_run: Tick, _this_run: Tick ) -> Self::Fetch<'w>

Creates a new instance of this fetch. Read more
source§

const IS_DENSE: bool = true

Returns true if (and only if) every table of every archetype matched by this fetch contains all of the matched components. This is used to select a more efficient “table iterator” for “dense” queries. If this returns true, WorldQuery::set_table must be used before WorldQuery::fetch can be called for iterators. If this returns false, WorldQuery::set_archetype must be used before WorldQuery::fetch can be called for iterators.
source§

unsafe fn set_archetype<'w>( _fetch: &mut Self::Fetch<'w>, _state: &Self::State, _archetype: &'w Archetype, _table: &Table )

Adjusts internal state to account for the next Archetype. This will always be called on archetypes that match this WorldQuery. Read more
source§

unsafe fn set_table<'w>( _fetch: &mut Self::Fetch<'w>, _state: &Self::State, _table: &'w Table )

Adjusts internal state to account for the next Table. This will always be called on tables that match this WorldQuery. Read more
source§

unsafe fn fetch<'w>( world: &mut Self::Fetch<'w>, entity: Entity, _table_row: TableRow ) -> Self::Item<'w>

Fetch Self::Item for either the given entity in the current Table, or for the given entity in the current Archetype. This must always be called after WorldQuery::set_table with a table_row in the range of the current Table or after WorldQuery::set_archetype with a entity in the current archetype. Read more
source§

fn update_component_access( _state: &Self::State, access: &mut FilteredAccess<ComponentId> )

Adds any component accesses used by this WorldQuery to access. Read more
source§

fn init_state(_world: &mut World)

Creates and initializes a State for this WorldQuery type.
source§

fn get_state(_components: &Components) -> Option<()>

Attempts to initialize a State for this WorldQuery type using read-only access to Components.
source§

fn matches_component_set( _state: &Self::State, _set_contains_id: &impl Fn(ComponentId) -> bool ) -> bool

Returns true if this query matches a set of components. Otherwise, returns false. Read more
source§

fn set_access(_state: &mut Self::State, _access: &FilteredAccess<ComponentId>)

Sets available accesses for implementors with dynamic access such as FilteredEntityRef or FilteredEntityMut. Read more

Auto Trait Implementations§

§

impl<'w> Freeze for EntityMut<'w>

§

impl<'w> !RefUnwindSafe for EntityMut<'w>

§

impl<'w> Send for EntityMut<'w>

§

impl<'w> Sync for EntityMut<'w>

§

impl<'w> Unpin for EntityMut<'w>

§

impl<'w> !UnwindSafe for EntityMut<'w>

Blanket Implementations§

source§

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

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

impl<T> Borrow<T> for T
where T: ?Sized,

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

source§

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

Mutably borrows from an owned value. Read more
source§

impl<T> Downcast for T
where T: Any,

source§

fn into_any(self: Box<T>) -> Box<dyn Any>

Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait.
source§

fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.
source§

fn as_any(&self) -> &(dyn Any + 'static)

Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.
source§

fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.
source§

impl<T> DowncastSync for T
where T: Any + Send + Sync,

source§

fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Sync + Send>

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait.
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

impl<T> Instrument for T

source§

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

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
source§

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
source§

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

source§

fn into(self) -> U

Calls U::from(self).

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

source§

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

§

type Error = Infallible

The type returned in the event of a conversion error.
source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

§

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

The type returned in the event of a conversion error.
source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
source§

impl<T> WithSubscriber for T

source§

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
source§

fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
source§

impl<T> ConditionalSend for T
where T: Send,