Struct NeedsMemoryAppend 

pub struct NeedsMemoryAppend { /* private fields */ }

A remembering run whose persisted finalization has not scheduled an append.

Trait Implementations

impl QueryFilter for NeedsMemoryAppend

const IS_ARCHETYPAL: bool

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<'__w>( _state: &Self::State, _fetch: &mut <Self as WorldQuery>::Fetch<'__w>, _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 WorldQuery for NeedsMemoryAppend

unsafe fn set_archetype<'__w, '__s>( _fetch: &mut <Self as WorldQuery>::Fetch<'__w>, _state: &'__s Self::State, _archetype: &'__w Archetype, _table: &'__w Table, )

SAFETY: we call set_archetype for each member that implements Fetch

unsafe fn set_table<'__w, '__s>( _fetch: &mut <Self as WorldQuery>::Fetch<'__w>, _state: &'__s Self::State, _table: &'__w Table, )

SAFETY: we call set_table for each member that implements Fetch

const IS_DENSE: bool

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

type Fetch<'__w> = NeedsMemoryAppendFetch<'__w>

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

type State = NeedsMemoryAppendState

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.

fn shrink_fetch<'__wlong: '__wshort, '__wshort>( fetch: <NeedsMemoryAppend as WorldQuery>::Fetch<'__wlong>, ) -> <NeedsMemoryAppend as WorldQuery>::Fetch<'__wshort>

This function manually implements subtyping for the query fetches.

unsafe fn init_fetch<'__w, '__s>( _world: UnsafeWorldCell<'__w>, state: &'__s Self::State, _last_run: Tick, _this_run: Tick, ) -> <Self as WorldQuery>::Fetch<'__w>

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.

fn update_component_access(state: &Self::State, _access: &mut FilteredAccess)

Adds any component accesses to the current entity used by this WorldQuery to access.

fn init_nested_access( state: &Self::State, _system_name: Option<&str>, _component_access_set: &mut FilteredAccessSet, _world: UnsafeWorldCell<'_>, )

Adds any component accesses to other entities used by this WorldQuery.

fn init_state(world: &mut World) -> NeedsMemoryAppendState

Creates and initializes a State for this WorldQuery type.

fn get_state(components: &Components) -> Option<NeedsMemoryAppendState>

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 update_archetypes(_state: &mut Self::State, _world: UnsafeWorldCell<'_>)

Called when the query state is updating its archetype cache. This can be used by nested queries to update their internal archetype caches.