Struct WithoutAny

pub struct WithoutAny<Trait: ?Sized + TraitQuery>(/* private fields */);

WorldQuery filter for entities without any one component implementing a trait.

Trait Implementations

impl<Trait: ?Sized + TraitQuery> QueryFilter for WithoutAny<Trait>

SAFETY: read-only access

const IS_ARCHETYPAL: bool = false

Returns true if (and only if) this Filter relies strictly on archetypes to limit which components are accessed by the Query.

unsafe fn filter_fetch( _fetch: &mut Self::Fetch<'_>, _entity: Entity, _table_row: TableRow, ) -> bool

Returns true if the provided Entity and TableRow should be included in the query results. If false, the entity will be skipped.

impl<Trait: ?Sized + TraitQuery> WorldQuery for WithoutAny<Trait>

const IS_DENSE: bool = false

Returns true if (and only if) every table of every archetype matched by this fetch contains all of the matched components.

type Fetch<'w> = ()

Per archetype/table state retrieved by this WorldQuery to compute Self::Item for each entity.

type State = TraitQueryState<Trait>

State used to construct a Self::Fetch. This will be cached inside QueryState, so it is best to move as much data / computation here as possible to reduce the cost of constructing Self::Fetch.

unsafe fn init_fetch( _world: UnsafeWorldCell<'_>, _state: &Self::State, _last_run: Tick, _this_run: Tick, )

Creates a new instance of Self::Fetch, by combining data from the World with the cached Self::State. Readonly accesses resources registered in WorldQuery::update_component_access.

unsafe fn set_archetype<'w>( _fetch: &mut (), _state: &Self::State, _archetype: &'w Archetype, _table: &'w Table, )

Adjusts internal state to account for the next Archetype. This will always be called on archetypes that match this WorldQuery.

unsafe fn set_table(_fetch: &mut (), _state: &Self::State, _table: &Table)

Adjusts internal state to account for the next Table. This will always be called on tables that match this WorldQuery.

fn update_component_access( state: &Self::State, access: &mut FilteredAccess<ComponentId>, )

Adds any component accesses used by this WorldQuery to access.

fn init_state(world: &mut World) -> Self::State

Creates and initializes a State for this WorldQuery type.

fn get_state(_: &Components) -> Option<Self::State>

Attempts to initialize a State for this WorldQuery type using read-only access to Components.

fn matches_component_set( state: &Self::State, set_contains_id: &impl Fn(ComponentId) -> bool, ) -> bool

Returns true if this query matches a set of components. Otherwise, returns false.

fn shrink_fetch<'wlong: 'wshort, 'wshort>( _fetch: Self::Fetch<'wlong>, ) -> Self::Fetch<'wshort>

This function manually implements subtyping for the query fetches.

fn set_access(_state: &mut Self::State, _access: &FilteredAccess<ComponentId>)

Sets available accesses for implementors with dynamic access such as FilteredEntityRef or FilteredEntityMut.

impl<Trait: ?Sized + TraitQuery> ArchetypeFilter for WithoutAny<Trait>