Struct EntityLocation 

pub struct EntityLocation {
    pub archetype_id: ArchetypeId,
    pub archetype_row: ArchetypeRow,
    pub table_id: TableId,
    pub table_row: TableRow,
}

A location of an entity in an archetype.

Fields

archetype_id: ArchetypeId

The ID of the Archetype the Entity belongs to.

archetype_row: ArchetypeRow

The index of the Entity within its Archetype.

table_id: TableId

The ID of the Table the Entity belongs to.

table_row: TableRow

The index of the Entity within its Table.

Trait Implementations

impl Clone for EntityLocation

fn clone(&self) -> EntityLocation

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for EntityLocation

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl PartialEq for EntityLocation

fn eq(&self, other: &EntityLocation) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl QueryData for EntityLocation

const IS_READ_ONLY: bool = true

True if this query is read-only and may not perform mutable access.

const IS_ARCHETYPAL: bool = true

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

type ReadOnly = EntityLocation

The read-only variant of this QueryData, which satisfies the ReadOnlyQueryData trait.

type Item<'w, 's> = EntityLocation

The item returned by this WorldQuery This will be the data retrieved by the query, and is visible to the end user when calling e.g. Query<Self>::get.

fn shrink<'wlong, 'wshort, 's>( item: <EntityLocation as QueryData>::Item<'wlong, 's>, ) -> <EntityLocation as QueryData>::Item<'wshort, 's>

where 'wlong: 'wshort,

This function manually implements subtyping for the query items.

unsafe fn fetch<'w, 's>( _state: &'s <EntityLocation as WorldQuery>::State, fetch: &mut <EntityLocation as WorldQuery>::Fetch<'w>, entity: Entity, _table_row: TableRow, ) -> Option<<EntityLocation as QueryData>::Item<'w, 's>>

Fetch Self::Item for either the given entity in the current Table, or for the given entity in the current Archetype. This must always be called after WorldQuery::set_table with a table_row in the range of the current Table or after WorldQuery::set_archetype with an entity in the current archetype. Accesses components registered in WorldQuery::update_component_access.

fn iter_access( _state: &<EntityLocation as WorldQuery>::State, ) -> impl Iterator<Item = EcsAccessType<'_>>

Returns an iterator over the access needed by QueryData::fetch. Access conflicts are usually checked in WorldQuery::update_component_access, but in certain cases this method can be useful to implement a way of checking for access conflicts in a non-allocating way.

fn provide_extra_access( _state: &mut Self::State, _access: &mut Access, _available_access: &Access, )

Offers additional access above what we requested in update_component_access. Implementations may add additional access that is a subset of available_access and does not conflict with anything in access, and must update access to include that access.

impl ReleaseStateQueryData for EntityLocation

fn release_state<'w>( item: <EntityLocation as QueryData>::Item<'w, '_>, ) -> <EntityLocation as QueryData>::Item<'w, 'static>

Releases the borrow from the query state by converting an item to have a 'static state lifetime.

impl WorldQuery for EntityLocation

const IS_DENSE: bool = true

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

type Fetch<'w> = &'w Entities

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

type State = ()

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>( fetch: <EntityLocation as WorldQuery>::Fetch<'wlong>, ) -> <EntityLocation as WorldQuery>::Fetch<'wshort>

where 'wlong: 'wshort,

This function manually implements subtyping for the query fetches.

unsafe fn init_fetch<'w, 's>( world: UnsafeWorldCell<'w>, _state: &'s <EntityLocation as WorldQuery>::State, _last_run: Tick, _this_run: Tick, ) -> <EntityLocation 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.

unsafe fn set_archetype<'w, 's>( _fetch: &mut <EntityLocation as WorldQuery>::Fetch<'w>, _state: &'s <EntityLocation as WorldQuery>::State, _archetype: &'w Archetype, _table: &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<'w, 's>( _fetch: &mut <EntityLocation as WorldQuery>::Fetch<'w>, _state: &'s <EntityLocation as WorldQuery>::State, _table: &'w 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: &<EntityLocation as WorldQuery>::State, _access: &mut FilteredAccess, )

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

fn init_state(_world: &mut World)

Creates and initializes a State for this WorldQuery type.

fn get_state(_components: &Components) -> Option<()>

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

fn matches_component_set( _state: &<EntityLocation as WorldQuery>::State, _set_contains_id: &impl Fn(ComponentId) -> bool, ) -> bool

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

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 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.

impl ArchetypeQueryData for EntityLocation

impl Copy for EntityLocation

impl IterQueryData for EntityLocation

impl ReadOnlyQueryData for EntityLocation

impl SingleEntityQueryData for EntityLocation

impl StructuralPartialEq for EntityLocation