Struct DynParamBuilder

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pub struct DynParamBuilder<'a>(/* private fields */);

Expand description

A SystemParamBuilder for a DynSystemParam. See the DynSystemParam docs for examples.

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impl<'a> DynParamBuilder<'a>

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pub fn new<T: SystemParam + 'static>( builder: impl SystemParamBuilder<T> + 'a, ) -> Self

Creates a new DynParamBuilder by wrapping a SystemParamBuilder of any type. The built DynSystemParam can be downcast to T.

Trait Implementations§

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impl<'a, 'w, 's> SystemParamBuilder<DynSystemParam<'w, 's>> for DynParamBuilder<'a>

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fn build( self, world: &mut World, meta: &mut SystemMeta, ) -> <DynSystemParam<'w, 's> 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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fn build_state(self, world: &mut World) -> SystemState

Create a SystemState from a SystemParamBuilder. To create a system, call SystemState::build_system on the result.

Auto Trait Implementations§

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impl<'a> !UnwindSafe for DynParamBuilder<'a>

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> Downcast for T
where T: Any,

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fn into_any(self: Box<T>) -> Box<dyn Any>

Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait.

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fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.

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