Trait ReadOnlySystemParam 

pub unsafe trait ReadOnlySystemParam: SystemParam { }

A SystemParam that only reads a given World.

Safety

This must only be implemented for SystemParam impls that exclusively read the World passed in to SystemParam::get_param

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl ReadOnlySystemParam for ()

impl<P: ReadOnlySystemParam> ReadOnlySystemParam for (P₁, P₂, …, Pₙ)

This trait is implemented for tuples up to 17 items long.

impl<T: ?Sized> ReadOnlySystemParam for PhantomData<T>

impl<T: ReadOnlySystemParam> ReadOnlySystemParam for Option<T>

impl<T: ReadOnlySystemParam> ReadOnlySystemParam for Result<T, SystemParamValidationError>

Implementors

impl ReadOnlySystemParam for ExclusiveMarker

impl ReadOnlySystemParam for FilteredResources<'_, '_>

impl ReadOnlySystemParam for NonSendMarker

impl ReadOnlySystemParam for SystemChangeTick

impl ReadOnlySystemParam for SystemName

impl ReadOnlySystemParam for WorldId

impl<'a, 'b, D: ReadOnlyQueryData + 'static, F: QueryFilter + 'static> ReadOnlySystemParam for Single<'a, 'b, D, F>

impl<'a, T: Resource> ReadOnlySystemParam for Res<'a, T>

impl<'a> ReadOnlySystemParam for &'a Archetypes

impl<'a> ReadOnlySystemParam for &'a Bundles

impl<'a> ReadOnlySystemParam for &'a Components

impl<'a> ReadOnlySystemParam for &'a Entities

impl<'a> ReadOnlySystemParam for &'a EntityAllocator

impl<'a> ReadOnlySystemParam for &'a RemovedComponentMessages

impl<'s, T: FromWorld + Send + 'static> ReadOnlySystemParam for Local<'s, T>

impl<'w, 's, D: ReadOnlyQueryData + 'static, F: QueryFilter + 'static> ReadOnlySystemParam for Populated<'w, 's, D, F>

impl<'w, 's, D: ReadOnlyQueryData + 'static, F: QueryFilter + 'static> ReadOnlySystemParam for Query<'w, 's, D, F>

impl<'w, 's, M: Message> ReadOnlySystemParam for MessageMutator<'w, 's, M>

where Local<'s, MessageCursor<M>>: ReadOnlySystemParam, ResMut<'w, Messages<M>>: ReadOnlySystemParam,

impl<'w, 's, M: Message> ReadOnlySystemParam for MessageReader<'w, 's, M>

where Local<'s, MessageCursor<M>>: ReadOnlySystemParam, Res<'w, Messages<M>>: ReadOnlySystemParam,

impl<'w, 's, M: Message> ReadOnlySystemParam for MessageWriter<'w, M>

where ResMut<'w, Messages<M>>: ReadOnlySystemParam,

impl<'w, 's, P0, P1, P2, P3, P4, P5, P6, P7> ReadOnlySystemParam for ParamSet<'w, 's, (P0, P1, P2, P3, P4, P5, P6, P7)>

where P0: ReadOnlySystemParam, P1: ReadOnlySystemParam, P2: ReadOnlySystemParam, P3: ReadOnlySystemParam, P4: ReadOnlySystemParam, P5: ReadOnlySystemParam, P6: ReadOnlySystemParam, P7: ReadOnlySystemParam,

impl<'w, 's, P0, P1, P2, P3, P4, P5, P6> ReadOnlySystemParam for ParamSet<'w, 's, (P0, P1, P2, P3, P4, P5, P6)>

where P0: ReadOnlySystemParam, P1: ReadOnlySystemParam, P2: ReadOnlySystemParam, P3: ReadOnlySystemParam, P4: ReadOnlySystemParam, P5: ReadOnlySystemParam, P6: ReadOnlySystemParam,

impl<'w, 's, P0, P1, P2, P3, P4, P5> ReadOnlySystemParam for ParamSet<'w, 's, (P0, P1, P2, P3, P4, P5)>

where P0: ReadOnlySystemParam, P1: ReadOnlySystemParam, P2: ReadOnlySystemParam, P3: ReadOnlySystemParam, P4: ReadOnlySystemParam, P5: ReadOnlySystemParam,

impl<'w, 's, P0, P1, P2, P3, P4> ReadOnlySystemParam for ParamSet<'w, 's, (P0, P1, P2, P3, P4)>

where P0: ReadOnlySystemParam, P1: ReadOnlySystemParam, P2: ReadOnlySystemParam, P3: ReadOnlySystemParam, P4: ReadOnlySystemParam,

impl<'w, 's, P0, P1, P2, P3> ReadOnlySystemParam for ParamSet<'w, 's, (P0, P1, P2, P3)>

where P0: ReadOnlySystemParam, P1: ReadOnlySystemParam, P2: ReadOnlySystemParam, P3: ReadOnlySystemParam,

impl<'w, 's, P0, P1, P2> ReadOnlySystemParam for ParamSet<'w, 's, (P0, P1, P2)>

where P0: ReadOnlySystemParam, P1: ReadOnlySystemParam, P2: ReadOnlySystemParam,

impl<'w, 's, P0, P1> ReadOnlySystemParam for ParamSet<'w, 's, (P0, P1)>

where P0: ReadOnlySystemParam, P1: ReadOnlySystemParam,

impl<'w, 's, P0> ReadOnlySystemParam for ParamSet<'w, 's, (P0,)>

where P0: ReadOnlySystemParam,

impl<'w, 's, P: ReadOnlySystemParam + 'static> ReadOnlySystemParam for StaticSystemParam<'w, 's, P>

impl<'w, 's, T: Component> ReadOnlySystemParam for ComponentIdFor<'s, T>

where Local<'s, InitComponentId<T>>: ReadOnlySystemParam,

impl<'w, 's, T: Component> ReadOnlySystemParam for RemovedComponents<'w, 's, T>

where ComponentIdFor<'s, T>: ReadOnlySystemParam, Local<'s, RemovedComponentReader<T>>: ReadOnlySystemParam, &'w RemovedComponentMessages: ReadOnlySystemParam,

impl<'w, 's> ReadOnlySystemParam for Commands<'w, 's>

where Deferred<'s, CommandQueue>: ReadOnlySystemParam, &'w Entities: ReadOnlySystemParam,

impl<'w, 's> ReadOnlySystemParam for ParallelCommands<'w, 's>

where Deferred<'s, ParallelCommandQueue>: ReadOnlySystemParam, &'w EntityAllocator: ReadOnlySystemParam, &'w Entities: ReadOnlySystemParam,

Available on crate feature std only.

impl<'w, T> ReadOnlySystemParam for NonSend<'w, T>

impl<'w> ReadOnlySystemParam for &'w World

impl<T: ReadOnlySystemParam> ReadOnlySystemParam for If<T>

impl<T: SystemBuffer> ReadOnlySystemParam for Deferred<'_, T>