Struct BodyHandle 

pub struct BodyHandle(/* private fields */);

An opaque identifier for a body inside a physics world.

BodyHandle is the single identity the physics public API speaks in — collision/trigger/fracture events, raycast hits, joints and broadphase queries all carry BodyHandles rather than the engine’s ECS Entity. The ECS↔physics bridge converts at the boundary (BodyHandle::from_id(entity.id()) on the way in, Entity::new(handle.id(), 0) on the way out), so a non-ECS embedding can drive the simulation with its own handles and the internal representation can evolve post-1.0 without breaking the physics API.

It is a transparent newtype over u32, so where it appears in serialized data (e.g. scene-file joint endpoints) it round-trips as that single id.

Determinism

A handle wraps the body’s stable u32 id — the sole identity physics keys on (the deterministic state hash sorts and mixes bodies by id). Carrying the same id the old Entity did keeps the state hash bit-identical, preserving cross-process/rollback determinism.

Implementations

impl BodyHandle

pub const INVALID: BodyHandle

Sentinel value for “no body”; usable in place of Option<BodyHandle>.

pub const fn from_id(id: u32) -> BodyHandle

Builds a handle from a raw body id.

pub const fn id(self) -> u32

The body’s stable id (the value the deterministic state hash keys on).

pub fn is_valid(self) -> bool

true unless this is INVALID.

Trait Implementations

impl Clone for BodyHandle

fn clone(&self) -> BodyHandle

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for BodyHandle

impl Debug for BodyHandle

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for BodyHandle

fn deserialize<__D>( __deserializer: __D, ) -> Result<BodyHandle, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for BodyHandle

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

Formats the value using the given formatter.

impl Eq for BodyHandle

impl Hash for BodyHandle

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

where __H: Hasher,

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 Ord for BodyHandle

fn cmp(&self, other: &BodyHandle) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for BodyHandle

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for BodyHandle

fn partial_cmp(&self, other: &BodyHandle) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for BodyHandle

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for BodyHandle