Struct QueryState 

pub struct QueryState<Q: WorldQuery, F: ReadOnlyWorldQuery> { /* private fields */ }

Implementations

impl<Q: WorldQuery, F: ReadOnlyWorldQuery> QueryState<Q, F>

pub fn new(world: &mut World) -> Self

pub fn get_entities(&self, world: &World) -> EntityIdSet

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

pub fn as_readonly(&self) -> &QueryState<Q::ReadOnly, F::ReadOnly>

pub unsafe fn as_transmuted_state<NQ, NF>(&self) -> &QueryState<NQ, NF>

where NQ: WorldQuery<State = Q::State>, NF: ReadOnlyWorldQuery<State = F::State>,

Safety

• NQ must have a subset of the access of Q.
• NF must have a subset of the access of F.

pub unsafe fn get_unchecked_manual<'w>( &self, world: &'w World, entity: Entity, last_change_tick: u32, change_tick: u32, ) -> Option<Q::Item<'w>>

Safety

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

impl<Q: WorldQuery, F: ReadOnlyWorldQuery> QueryState<Q, F>

pub fn validate_world(&self, world: &World)

pub fn debug_validate_world(&self, world: &World)

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

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

pub unsafe fn iter_unchecked_manual<'w, 's>( &'s self, world: &'w World, last_change_tick: u32, change_tick: u32, ) -> QueryIter<'w, 's, Q, F>

Safety

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

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

pub fn iter_mut<'w, 's>( &'s mut self, world: &'w mut World, ) -> QueryIter<'w, 's, Q, F>

Trait Implementations

impl<'w, 's, Q, F> SystemParamFetch<'w, 's> for QueryState<Q, F>

where Q: WorldQuery + 'static, F: ReadOnlyWorldQuery + 'static,

type Item = Query<'w, 's, Q, F>

unsafe fn get_param( &'s mut self, meta: &SystemMeta, world: &'w World, change_tick: u32, ) -> Self::Item

impl<Q, F> SystemParamState for QueryState<Q, F>

where Q: WorldQuery + 'static, F: ReadOnlyWorldQuery + 'static,

fn init(world: &mut World, meta: &mut SystemMeta) -> Self

fn apply(&mut self, _world: &mut World)