Struct Bundles 

pub struct Bundles { /* private fields */ }

Metadata for bundles. Stores a BundleInfo for each type of Bundle in a given world.

Implementations

impl Bundles

pub fn len(&self) -> usize

The total number of Bundle registered in Storages.

pub fn is_empty(&self) -> bool

Returns true if no Bundle registered in Storages.

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

Iterate over BundleInfo.

pub fn get(&self, bundle_id: BundleId) -> Option<&BundleInfo>

Gets the metadata associated with a specific type of bundle. Returns None if the bundle is not registered with the world.

pub fn get_id(&self, type_id: TypeId) -> Option<BundleId>

Gets the value identifying a specific type of bundle. Returns None if the bundle does not exist in the world, or if type_id does not correspond to a type of bundle.

Trait Implementations

impl Default for Bundles

fn default() -> Bundles

Returns the “default value” for a type.

impl<'a> SystemParam for &'a Bundles

type State = ()

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

type Item<'w, 's> = &'w Bundles

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) -> <&'a Bundles as SystemParam>::State

Creates a new instance of this param’s State.

fn init_access( _state: &<&'a Bundles as SystemParam>::State, _system_meta: &mut SystemMeta, _component_access_set: &mut FilteredAccessSet, _world: &mut World, )

Registers any World access used by this SystemParam.

unsafe fn get_param<'w, 's>( _state: &'s mut <&'a Bundles as SystemParam>::State, _system_meta: &SystemMeta, world: UnsafeWorldCell<'w>, _change_tick: Tick, ) -> Result<<&'a Bundles as SystemParam>::Item<'w, 's>, SystemParamValidationError>

Creates a parameter to be passed into a SystemParamFunction.

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 ApplyDeferred.

fn queue( state: &mut Self::State, system_meta: &SystemMeta, world: DeferredWorld<'_>, )

Queues any deferred mutations to be applied at the next ApplyDeferred.

impl<'a> ReadOnlySystemParam for &'a Bundles