Struct EntityId 

pub struct EntityId {
    pub index: u32,
    pub generation: u32,
}

A unique identifier for an entity in the world.

It combines an index with a generation count to solve the “ABA problem”. When an entity is despawned, its index can be recycled for a new entity, but the generation is incremented. This ensures that old EntityId handles pointing to a recycled index become invalid and cannot accidentally affect the new entity.

Fields

index: u32

The index of the entity’s metadata in the central Vec<EntityMetadata>.

generation: u32

A generation counter that is incremented each time the index is recycled.

Trait Implementations

impl<'__de, __Context> BorrowDecode<'__de, __Context> for EntityId

fn borrow_decode<__D: BorrowDecoder<'__de, Context = __Context>>( decoder: &mut __D, ) -> Result<Self, DecodeError>

Attempt to decode this type with the given BorrowDecode.

impl Clone for EntityId

fn clone(&self) -> EntityId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EntityId

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

Formats the value using the given formatter.

impl<__Context> Decode<__Context> for EntityId

fn decode<__D: Decoder<Context = __Context>>( decoder: &mut __D, ) -> Result<Self, DecodeError>

Attempt to decode this type with the given Decode.

impl<'de> Deserialize<'de> for EntityId

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Encode for EntityId

fn encode<__E: Encoder>(&self, encoder: &mut __E) -> Result<(), EncodeError>

Encode a given type.

impl Hash for EntityId

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for EntityId

fn eq(&self, other: &EntityId) -> 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 Serialize for EntityId

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for EntityId

impl Eq for EntityId

impl StructuralPartialEq for EntityId