Struct legion::query::ChunkView[][src]

pub struct ChunkView<'a, F: Fetch> { /* fields omitted */ }
Expand description

Provides access to slices of components for entities which have the same component layout.

A single index in any of the slices contained in a chunk belong to the same entity.

Implementations

Returns the archetype that all entities in the chunk belong to.

Returns a slice of components.

May return None if the chunk’s view does not declare access to the component type.

Returns a mutable slice of components.

May return None if the chunk’s view does not declare access to the component type.

Converts the chunk into a tuple of its inner slices.

Examples
let mut query = <(Entity, Read<A>, Write<B>, TryRead<C>, TryWrite<D>)>::query();
for chunk in query.iter_chunks_mut(&mut world) {
    let slices: (&[Entity], &[A], &mut [B], Option<&[C]>, Option<&mut [D]>) =
        chunk.into_components();
}

Converts the chunk into a tuple of its inner slices.

Only usable with views whose elements are all read-only.

Examples
let mut query = <(Entity, Read<A>, TryRead<B>)>::query();
for chunk in query.iter_chunks_mut(&mut world) {
    let slices: (&[Entity], &[A], Option<&[B]>) = chunk.get_components();
}

Converts the chunk into an iterator which yields tuples of (Entity, components).

Trait Implementations

Which kind of iterator are we turning this into?

The type of the elements being iterated over.

Creates an iterator from a value. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

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. Read more

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

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

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

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

Performs the conversion.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.