Struct OwnedQueryState

pub struct OwnedQueryState<'t, D: QueryData + 'static, F: QueryFilter + 'static> { /* private fields */ }

A World reference with a cached QueryState.

Tries to obtain the QueryState from the World on create and stores the QueryState in the World on drop.

Since QueryState cannot be constructed from &World, readonly access is not supported.

Implementations

impl<D: QueryData + 'static, F: QueryFilter + 'static> OwnedQueryState<'_, D, F>

pub fn apply_commands(&mut self, commands: &mut CommandQueue)

Apply a command queue to world.

impl<D: QueryData + 'static, F: QueryFilter + 'static> OwnedQueryState<'_, D, F>

pub fn new(world: &mut World) -> OwnedQueryState<'_, D, F>

pub fn single( &mut self, ) -> Result<<D::ReadOnly as QueryData>::Item<'_>, AccessError>

pub fn single_mut(&mut self) -> Result<D::Item<'_>, AccessError>

pub fn get( &mut self, entity: Entity, ) -> Result<<D::ReadOnly as QueryData>::Item<'_>, AccessError>

pub fn get_mut(&mut self, entity: Entity) -> Result<D::Item<'_>, AccessError>

pub fn iter_many<E: IntoIterator<Item: EntityEquivalent>>( &mut self, entities: E, ) -> QueryManyIter<'_, '_, D::ReadOnly, F, E::IntoIter>

pub fn iter_many_mut<E: IntoIterator<Item: EntityEquivalent>>( &mut self, entities: E, ) -> QueryManyIter<'_, '_, D, F, E::IntoIter>

pub fn iter(&mut self) -> QueryIter<'_, '_, D::ReadOnly, F>

pub fn iter_mut(&mut self) -> QueryIter<'_, '_, D, F>

Trait Implementations

impl<D: QueryData + 'static, F: QueryFilter + 'static> Drop for OwnedQueryState<'_, D, F>

fn drop(&mut self)

Executes the destructor for this type.

impl<'s, D: QueryData + 'static, F: QueryFilter + 'static> IntoIterator for &'s mut OwnedQueryState<'_, D, F>

type Item = <D as QueryData>::Item<'s>

The type of the elements being iterated over.

type IntoIter = QueryIter<'s, 's, D, F>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.