Struct CommandRegistry 

pub struct CommandRegistry { /* private fields */ }

Resource holding the per-TypeId handler table for Command::Typed.

Populated by crate::app::App::register_command. Plugins that author new command kinds register their handler once at build-time and then push Command::Typed { type_id: TypeId::of::<MyCmd>(), payload } from any thread.

Implementations

impl CommandRegistry

pub fn register<T, F>(&mut self, handler: F)

where T: Any + Send, F: Fn(&mut World, Box<T>) + Send + Sync + 'static,

Registers handler for payloads of type T. Subsequent registrations for the same type overwrite the prior entry.

pub fn lookup(&self, type_id: &TypeId) -> Option<CommandHandlerFn>

Returns the registered handler for type_id, if any.

Trait Implementations

impl Clone for CommandRegistry

fn clone(&self) -> CommandRegistry

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Component for CommandRegistry

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 Default for CommandRegistry

fn default() -> CommandRegistry

Returns the “default value” for a type.

impl Resource for CommandRegistry

where Self: Send + Sync + 'static,