Struct CapabilityChanges 

pub struct CapabilityChanges<M: Send + Sync + 'static = ()> { /* private fields */ }

Per-frame, per-capability change verdict — the §12.5 hook BH-4’s Detect phase (crate::sleep::mark_wake_dirty) consumes so a component-backed detect-capable wake condition gets the cheap re-evaluate-on-change path without the missed-wake class.

Keyed by the concrete component’s TypeId (see CapabilityRegistry::type_id for why TypeId rather than ComponentId). A detect_capability_changes system — one per registered component, wired by BrinkCapabilityAppExt::register_capability — overwrites its component’s entry every frame with whether any entity carrying that component changed since the tracker last ran (bevy’s own Changed<C> window). An absent entry means no tracker has recorded a verdict for that component yet this run — the wake layer treats that, like an unregistered capability, as a conservative must-poll (never a missed wake).

Implementations

impl<M: Send + Sync + 'static> CapabilityChanges<M>

pub fn changed(&self, ty: TypeId) -> Option<bool>

This frame’s change verdict for a component TypeId: Some(true) if an entity carrying it changed since the tracker last ran, Some(false) if it is tracked but unchanged, and None if no tracker has recorded a verdict for it yet (untracked — the wake layer must-polls it).

Trait Implementations

impl<M: Send + Sync + 'static> Component for CapabilityChanges<M>

where Self: Send + Sync + 'static,

const STORAGE_TYPE: StorageType = bevy_ecs::component::StorageType::SparseSet

A constant indicating the storage type used for this component.

type Mutability = Mutable

A marker type to assist Bevy with determining if this component is mutable, or immutable. Mutable components will have Component<Mutability = Mutable>, while immutable components will instead have Component<Mutability = Immutable>.

fn register_required_components( _requiree: ComponentId, required_components: &mut RequiredComponentsRegistrator<'_, '_>, )

Registers required components.

fn clone_behavior() -> ComponentCloneBehavior

Called when registering this component, allowing to override clone function (or disable cloning altogether) for this component.

fn relationship_accessor() -> Option<ComponentRelationshipAccessor<Self>>

Returns ComponentRelationshipAccessor required for working with relationships in dynamic contexts.

fn on_add() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_add ComponentHook for this Component if one is defined.

fn on_insert() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_insert ComponentHook for this Component if one is defined.

fn on_discard() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_discard ComponentHook for this Component if one is defined.

fn on_remove() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_remove ComponentHook for this Component if one is defined.

fn on_despawn() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_despawn ComponentHook for this Component if one is defined.

fn map_entities<E>(_this: &mut Self, _mapper: &mut E)

where E: EntityMapper,

Maps the entities on this component using the given EntityMapper. This is used to remap entities in contexts like scenes and entity cloning. When deriving Component, this is populated by annotating fields containing entities with #[entities]

impl<M: Send + Sync + 'static> Default for CapabilityChanges<M>

fn default() -> Self

Returns the “default value” for a type.

impl<M: Send + Sync + 'static> Resource for CapabilityChanges<M>

where Self: Send + Sync + 'static,