Struct bevy::ecs::world::WorldId

pub struct WorldId(/* private fields */);
Expand description

A unique identifier for a World.

The trait FromWorld is implemented for this type, which returns the ID of the world passed to FromWorld::from_world.

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impl WorldId

pub fn new() -> Option<WorldId>

Create a new, unique WorldId. Returns None if the supply of unique WorldIds has been exhausted

Please note that the WorldIds created from this method are unique across time - if a given WorldId is Dropped its value still cannot be reused

Trait Implementations§

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impl Clone for WorldId

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fn clone(&self) -> WorldId

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for WorldId

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl ExclusiveSystemParam for WorldId

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type State = WorldId

Used to store data which persists across invocations of a system.
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type Item<'s> = WorldId

The item type returned when constructing this system param. See SystemParam::Item.
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fn init( world: &mut World, _system_meta: &mut SystemMeta ) -> <WorldId as ExclusiveSystemParam>::State

Creates a new instance of this param’s State.
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fn get_param<'s>( state: &'s mut <WorldId as ExclusiveSystemParam>::State, _system_meta: &SystemMeta ) -> <WorldId as ExclusiveSystemParam>::Item<'s>

Creates a parameter to be passed into an ExclusiveSystemParamFunction.
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impl FromWorld for WorldId

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fn from_world(world: &mut World) -> WorldId

Creates Self using data from the given World.
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impl Hash for WorldId

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fn hash<__H>(&self, state: &mut __H)
where __H: Hasher,

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq for WorldId

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fn eq(&self, other: &WorldId) -> bool

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl SparseSetIndex for WorldId

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fn sparse_set_index(&self) -> usize

Gets the sparse set index corresponding to this instance.
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fn get_sparse_set_index(value: usize) -> WorldId

Creates a new instance of this type with the specified index.
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impl SystemParam for WorldId

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type State = ()

Used to store data which persists across invocations of a system.
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type Item<'world, 'state> = WorldId

The item type returned when constructing this system param. The value of this associated type should be Self, instantiated with new lifetimes. Read more
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fn init_state( _: &mut World, _: &mut SystemMeta ) -> <WorldId as SystemParam>::State

Registers any World access used by this SystemParam and creates a new instance of this param’s State.
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unsafe fn get_param<'world, 'state>( _: &'state mut <WorldId as SystemParam>::State, _: &SystemMeta, world: UnsafeWorldCell<'world>, _: Tick ) -> <WorldId as SystemParam>::Item<'world, 'state>

Creates a parameter to be passed into a SystemParamFunction. Read more
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unsafe 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).a Read more
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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.
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impl Copy for WorldId

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impl Eq for WorldId

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impl ReadOnlySystemParam for WorldId

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impl StructuralPartialEq for WorldId

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