Struct HookedSceneState

pub struct HookedSceneState<'w, 's, M: Component> { /* private fields */ }

Convenience parameter to query if a scene marked with M has been loaded.

Implementations

impl<'w, 's, T: Component> HookedSceneState<'w, 's, T>

pub fn is_loaded(&self) -> bool

Whether any scene with T component has been loaded and its hook ran.

Trait Implementations

impl<M: Component> SystemParam for HookedSceneState<'_, '_, M>

type State = FetchState<M>

Used to store data which persists across invocations of a system.

type Item<'w, 's> = HookedSceneState<'w, 's, M>

The item type returned when constructing this system param. The value of this associated type should be Self, instantiated with new lifetimes.

fn init_state(world: &mut World, system_meta: &mut SystemMeta) -> Self::State

Registers any World access used by this SystemParam and creates a new instance of this param’s State.

fn new_archetype( state: &mut Self::State, archetype: &Archetype, system_meta: &mut SystemMeta, )

For the specified Archetype, registers the components accessed by this SystemParam (if applicable).

fn apply(state: &mut Self::State, system_meta: &SystemMeta, world: &mut World)

Applies any deferred mutations stored in this SystemParam’s state. This is used to apply Commands during apply_deferred.

unsafe fn get_param<'w, 's>( state: &'s mut Self::State, system_meta: &SystemMeta, world: UnsafeWorldCell<'w>, change_tick: Tick, ) -> Self::Item<'w, 's>

Creates a parameter to be passed into a SystemParamFunction.

impl<'w, 's, M: Component> ReadOnlySystemParam for HookedSceneState<'w, 's, M>

where Query<'w, 's, (), (With<M>, With<SceneHooked>)>: ReadOnlySystemParam,