pub struct Hierarchy;
Expand description
For compatibility with bevy_hierarchy. WARNING:
- Hierarchy cleanup does not clean aery relations.
- Aery cleanup policies do not clean up hierarchy edges.
§Query example
use bevy::prelude::*;
use aery::prelude::*;
#[derive(Component)]
struct A {
// ..
}
#[derive(Component)]
struct B {
// ..
}
#[derive(Relation)]
struct R;
fn sys(
a_query: Query<&A>,
b_query: Query<(&B, Relations<(Hierarchy, R)>)>, // Can use alone or along side relations
roots: Query<Entity, (With<Children>, Without<Parent>)>
) {
b_query.traverse::<Hierarchy>(roots.iter()).for_each(|b, edges| {
edges.join::<R>(&a_query).for_each(|a| {
// ..
});
})
}
Trait Implementations§
source§impl EdgeSide for Hierarchy
impl EdgeSide for Hierarchy
fn entities<'i, 'r, RS>(relations: &'r RelationsItem<'i, RS>) -> EdgeIter<'r>where
RS: RelationSet,
RelationsItem<'i, RS>: RelationEntries,
'i: 'r,
source§impl From<Hierarchy> for RelationId
impl From<Hierarchy> for RelationId
Auto Trait Implementations§
impl RefUnwindSafe for Hierarchy
impl Send for Hierarchy
impl Sync for Hierarchy
impl Unpin for Hierarchy
impl UnwindSafe for Hierarchy
Blanket Implementations§
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
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
§impl<T> Downcast for Twhere
T: Any,
impl<T> Downcast for Twhere
T: Any,
§fn into_any(self: Box<T>) -> Box<dyn Any>
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
.§fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>
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
.§fn as_any(&self) -> &(dyn Any + 'static)
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.§fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
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.