Struct ResourceKinds 

pub struct ResourceKinds { /* private fields */ }

Protocol-wide table marking which ComponentKinds are Replicated Resources (vs ordinary components).

A Resource type R is registered via Protocol::add_resource::<R>(), which:

1. Calls component_kinds.add_component::<R>() to allocate a normal ComponentKind + NetId for R. Resources reuse the component wire encoding 100% — they ARE components, just on a hidden singleton entity.
2. Records the resulting ComponentKind in this table so the receiver side can recognize incoming SpawnWithComponents messages whose components are resources, and populate its ResourceRegistry accordingly.

There is no wire representation of ResourceKinds itself — the table is built identically on both sides from the same ProtocolPlugin registration order, exactly like ComponentKinds.

Implementations

impl ResourceKinds

pub fn new() -> Self

Creates an empty ResourceKinds table.

pub fn register<R: 'static>(&mut self, kind: ComponentKind)

Register R as a resource kind. Idempotent: re-registering the same type is a no-op (matches the add_component re-registration semantics — the component table dedupes on TypeId).

R: 'static is the only bound — internal callers always have the full Replicate bound, but this method only uses TypeId::of::<R>() so we don’t impose more.

pub fn is_resource(&self, kind: &ComponentKind) -> bool

O(1) — is the given ComponentKind a registered resource?

pub fn kind_for<R: 'static>(&self) -> Option<ComponentKind>

Return the ComponentKind registered for R, or None if R was never registered as a resource.

Implementation note: ComponentKind is TypeId-keyed (shared/src/world/component/component_kinds.rs:53), so we construct the kind from R’s TypeId and check membership.

pub fn len(&self) -> usize

Number of registered resource kinds.

pub fn is_empty(&self) -> bool

Returns true if no resource kinds have been registered.

pub fn iter(&self) -> impl Iterator<Item = &ComponentKind>

Iterate over all registered resource kinds.

Trait Implementations

impl Clone for ResourceKinds

fn clone(&self) -> ResourceKinds

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Default for ResourceKinds

fn default() -> ResourceKinds

Returns the “default value” for a type.