Struct shiv::query::Query

pub struct Query<'w, 's, Q: WorldQuery, F: ReadOnlyWorldQuery = ()> { /* private fields */ }

Implementations

impl<'w, 's, Q: WorldQuery, F: ReadOnlyWorldQuery> Query<'w, 's, Q, F>

pub unsafe fn new(
    world: &'w World,
    state: &'s mut QueryState<Q, F>,
    last_change_tick: u32,
    change_tick: u32
) -> Self

Safety

• world must be the same world that was used to create this QueryState.

pub fn is_empty(&self) -> bool

pub fn contains(&self, entity: Entity) -> bool

pub fn get(&self, entity: Entity) -> Option<ReadOnlyQueryItem<'_, Q>>

pub fn get_mut(&mut self, entity: Entity) -> Option<QueryItem<'_, Q>>

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

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

Trait Implementations

impl<'w, 's, Q: WorldQuery, F: ReadOnlyWorldQuery> IntoIterator for &'w Query<'_, 's, Q, F>

type Item = <<Q as WorldQuery>::ReadOnly as WorldQuery>::Item<'w>

The type of the elements being iterated over.

type IntoIter = QueryIter<'w, 's, <Q as WorldQuery>::ReadOnly, <F as WorldQuery>::ReadOnly>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl<'w, 's, Q: WorldQuery, F: ReadOnlyWorldQuery> IntoIterator for &'w mut Query<'_, 's, Q, F>

type Item = <Q as WorldQuery>::Item<'w>

The type of the elements being iterated over.

type IntoIter = QueryIter<'w, 's, Q, F>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl<'w, 's, Q, F> SystemParam for Query<'w, 's, Q, F>where
    Q: WorldQuery + 'static,
    F: ReadOnlyWorldQuery + 'static,

type Fetch = QueryState<Q, F>