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", so this trait is not object safe.

Implementations on Foreign Types

impl ReadOnlySystemParam for ()

impl<P0: ReadOnlySystemParam, P1: ReadOnlySystemParam> ReadOnlySystemParam for (P0, P1)

impl<P0: ReadOnlySystemParam, P1: ReadOnlySystemParam, P2: ReadOnlySystemParam> ReadOnlySystemParam for (P0, P1, P2)

impl<P0: ReadOnlySystemParam, P1: ReadOnlySystemParam, P2: ReadOnlySystemParam, P3: ReadOnlySystemParam> ReadOnlySystemParam for (P0, P1, P2, P3)

impl<P0: ReadOnlySystemParam, P1: ReadOnlySystemParam, P2: ReadOnlySystemParam, P3: ReadOnlySystemParam, P4: ReadOnlySystemParam> ReadOnlySystemParam for (P0, P1, P2, P3, P4)

impl<P0: ReadOnlySystemParam, P1: ReadOnlySystemParam, P2: ReadOnlySystemParam, P3: ReadOnlySystemParam, P4: ReadOnlySystemParam, P5: ReadOnlySystemParam> ReadOnlySystemParam for (P0, P1, P2, P3, P4, P5)

impl<P0: ReadOnlySystemParam, P1: ReadOnlySystemParam, P2: ReadOnlySystemParam, P3: ReadOnlySystemParam, P4: ReadOnlySystemParam, P5: ReadOnlySystemParam, P6: ReadOnlySystemParam> ReadOnlySystemParam for (P0, P1, P2, P3, P4, P5, P6)

impl<P0: ReadOnlySystemParam, P1: ReadOnlySystemParam, P2: ReadOnlySystemParam, P3: ReadOnlySystemParam, P4: ReadOnlySystemParam, P5: ReadOnlySystemParam, P6: ReadOnlySystemParam, P7: ReadOnlySystemParam> ReadOnlySystemParam for (P0, P1, P2, P3, P4, P5, P6, P7)

impl<P0: ReadOnlySystemParam, P1: ReadOnlySystemParam, P2: ReadOnlySystemParam, P3: ReadOnlySystemParam, P4: ReadOnlySystemParam, P5: ReadOnlySystemParam, P6: ReadOnlySystemParam, P7: ReadOnlySystemParam, P8: ReadOnlySystemParam> ReadOnlySystemParam for (P0, P1, P2, P3, P4, P5, P6, P7, P8)

impl<P0: ReadOnlySystemParam, P1: ReadOnlySystemParam, P2: ReadOnlySystemParam, P3: ReadOnlySystemParam, P4: ReadOnlySystemParam, P5: ReadOnlySystemParam, P6: ReadOnlySystemParam, P7: ReadOnlySystemParam, P8: ReadOnlySystemParam, P9: ReadOnlySystemParam> ReadOnlySystemParam for (P0, P1, P2, P3, P4, P5, P6, P7, P8, P9)

impl<P0: ReadOnlySystemParam, P1: ReadOnlySystemParam, P2: ReadOnlySystemParam, P3: ReadOnlySystemParam, P4: ReadOnlySystemParam, P5: ReadOnlySystemParam, P6: ReadOnlySystemParam, P7: ReadOnlySystemParam, P8: ReadOnlySystemParam, P9: ReadOnlySystemParam, P10: ReadOnlySystemParam> ReadOnlySystemParam for (P0, P1, P2, P3, P4, P5, P6, P7, P8, P9, P10)

impl<P0: ReadOnlySystemParam, P1: ReadOnlySystemParam, P2: ReadOnlySystemParam, P3: ReadOnlySystemParam, P4: ReadOnlySystemParam, P5: ReadOnlySystemParam, P6: ReadOnlySystemParam, P7: ReadOnlySystemParam, P8: ReadOnlySystemParam, P9: ReadOnlySystemParam, P10: ReadOnlySystemParam, P11: ReadOnlySystemParam> ReadOnlySystemParam for (P0, P1, P2, P3, P4, P5, P6, P7, P8, P9, P10, P11)

impl<P0: ReadOnlySystemParam, P1: ReadOnlySystemParam, P2: ReadOnlySystemParam, P3: ReadOnlySystemParam, P4: ReadOnlySystemParam, P5: ReadOnlySystemParam, P6: ReadOnlySystemParam, P7: ReadOnlySystemParam, P8: ReadOnlySystemParam, P9: ReadOnlySystemParam, P10: ReadOnlySystemParam, P11: ReadOnlySystemParam, P12: ReadOnlySystemParam> ReadOnlySystemParam for (P0, P1, P2, P3, P4, P5, P6, P7, P8, P9, P10, P11, P12)

impl<P0: ReadOnlySystemParam, P1: ReadOnlySystemParam, P2: ReadOnlySystemParam, P3: ReadOnlySystemParam, P4: ReadOnlySystemParam, P5: ReadOnlySystemParam, P6: ReadOnlySystemParam, P7: ReadOnlySystemParam, P8: ReadOnlySystemParam, P9: ReadOnlySystemParam, P10: ReadOnlySystemParam, P11: ReadOnlySystemParam, P12: ReadOnlySystemParam, P13: ReadOnlySystemParam> ReadOnlySystemParam for (P0, P1, P2, P3, P4, P5, P6, P7, P8, P9, P10, P11, P12, P13)

impl<P0: ReadOnlySystemParam, P1: ReadOnlySystemParam, P2: ReadOnlySystemParam, P3: ReadOnlySystemParam, P4: ReadOnlySystemParam, P5: ReadOnlySystemParam, P6: ReadOnlySystemParam, P7: ReadOnlySystemParam, P8: ReadOnlySystemParam, P9: ReadOnlySystemParam, P10: ReadOnlySystemParam, P11: ReadOnlySystemParam, P12: ReadOnlySystemParam, P13: ReadOnlySystemParam, P14: ReadOnlySystemParam> ReadOnlySystemParam for (P0, P1, P2, P3, P4, P5, P6, P7, P8, P9, P10, P11, P12, P13, P14)

impl<P0: ReadOnlySystemParam, P1: ReadOnlySystemParam, P2: ReadOnlySystemParam, P3: ReadOnlySystemParam, P4: ReadOnlySystemParam, P5: ReadOnlySystemParam, P6: ReadOnlySystemParam, P7: ReadOnlySystemParam, P8: ReadOnlySystemParam, P9: ReadOnlySystemParam, P10: ReadOnlySystemParam, P11: ReadOnlySystemParam, P12: ReadOnlySystemParam, P13: ReadOnlySystemParam, P14: ReadOnlySystemParam, P15: ReadOnlySystemParam> ReadOnlySystemParam for (P0, P1, P2, P3, P4, P5, P6, P7, P8, P9, P10, P11, P12, P13, P14, P15)

impl<P: ReadOnlySystemParam> ReadOnlySystemParam for (P,)

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

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

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

Implementors

impl ReadOnlySystemParam for FilteredResources<'_, '_>

impl ReadOnlySystemParam for WorldId

impl ReadOnlySystemParam for ExclusiveMarker

impl ReadOnlySystemParam for NonSendMarker

impl ReadOnlySystemParam for SystemChangeTick

impl ReadOnlySystemParam for SystemName

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

impl<'w> ReadOnlySystemParam for &'w World

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,

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

where P0: ReadOnlySystemParam,

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

where P0: ReadOnlySystemParam, P1: 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, 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, 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, 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, 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, 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, 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, T> ReadOnlySystemParam for NonSend<'w, T>

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

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