pub struct EntityMut<'w> { /* private fields */ }
Expand description
A mutable reference to a particular Entity
and all of its components
Implementations§
source§impl<'w> EntityMut<'w>
impl<'w> EntityMut<'w>
pub fn id(&self) -> Entity
pub fn location(&self) -> EntityLocation
pub fn archetype(&self) -> &Archetype
pub fn contains<T: Component>(&self) -> bool
pub fn contains_id(&self, component_id: ComponentId) -> bool
pub fn contains_type_id(&self, type_id: TypeId) -> bool
pub fn get<T: Component>(&self) -> Option<&T>
pub fn get_mut<T: Component>(&mut self) -> Option<Mut<'_, T>>
sourcepub fn get_change_ticks<T: Component>(&self) -> Option<&ComponentTicks>
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.
sourcepub unsafe fn get_unchecked_mut<T: Component>(&self) -> Option<Mut<'_, T>>
pub unsafe fn get_unchecked_mut<T: Component>(&self) -> Option<Mut<'_, T>>
Gets a mutable reference to the component of type T
associated with
this entity without ensuring there are no other borrows active and without
ensuring that the returned reference will stay valid.
Safety
- The returned reference must never alias a mutable borrow of this component.
- The returned reference must not be used after this component is moved which
may happen from any
insert_component
,remove_component
ordespawn
operation on this world (non-exhaustive list).
pub fn insert_bundle<T: Bundle>(&mut self, bundle: T) -> &mut Self
insert
instead, which now accepts bundles, components, and tuples of bundles and components.sourcepub fn insert<T: Bundle>(&mut self, bundle: T) -> &mut Self
pub fn insert<T: Bundle>(&mut self, bundle: T) -> &mut Self
Adds a Bundle
of components to the entity.
This will overwrite any previous value(s) of the same component type.
pub fn remove_bundle<T: Bundle>(&mut self) -> Option<T>
remove
instead, which now accepts bundles, components, and tuples of bundles and components.sourcepub fn remove<T: Bundle>(&mut self) -> Option<T>
pub fn remove<T: Bundle>(&mut self) -> Option<T>
Removes a Bundle
of components from the entity and returns the bundle.
Returns None
if the entity does not contain the bundle.
pub fn remove_bundle_intersection<T: Bundle>(&mut self)
remove_intersection
instead, which now accepts bundles, components, and tuples of bundles and components.sourcepub fn remove_intersection<T: Bundle>(&mut self)
pub fn remove_intersection<T: Bundle>(&mut self)
Remove any components in the bundle that the entity has.
pub fn despawn(self)
pub fn world(&self) -> &World
sourcepub unsafe fn world_mut(&mut self) -> &mut World
pub unsafe fn world_mut(&mut self) -> &mut World
Returns this EntityMut
’s world.
See EntityMut::world_scope
or EntityMut::into_world_mut
for a safe alternative.
Safety
Caller must not modify the world in a way that changes the current entity’s location
If the caller does do something that could change the location, self.update_location()
must be called before using any other methods on this EntityMut
.
sourcepub fn into_world_mut(self) -> &'w mut World
pub fn into_world_mut(self) -> &'w mut World
Return this EntityMut
’s World
, consuming itself.
sourcepub fn world_scope(&mut self, f: impl FnOnce(&mut World))
pub fn world_scope(&mut self, f: impl FnOnce(&mut World))
Gives mutable access to this EntityMut
’s World
in a temporary scope.
sourcepub fn update_location(&mut self)
pub fn update_location(&mut self)
Updates the internal entity location to match the current location in the internal
World
. This is only needed if the user called EntityMut::world
, which enables the
location to change.
source§impl<'w> EntityMut<'w>
impl<'w> EntityMut<'w>
sourcepub fn get_by_id(&self, component_id: ComponentId) -> Option<Ptr<'_>>
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 EntityMut::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.
sourcepub fn get_mut_by_id(
&mut self,
component_id: ComponentId
) -> Option<MutUntyped<'_>>
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.
Trait Implementations§
Auto Trait Implementations§
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> Downcast for Twhere
T: Any,
impl<T> Downcast for Twhere
T: Any,
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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
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can then be
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fn as_any(&self) -> &(dyn Any + 'static)
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