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<'w, 's> ReadOnlySystemParam for DirectionalNavigation<'w>

where ResMut<'w, InputFocus>: ReadOnlySystemParam, Res<'w, DirectionalNavigationMap>: ReadOnlySystemParam,

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

where Query<'w, 's, &'static ChildOf>: ReadOnlySystemParam, Option<Res<'w, InputFocus>>: ReadOnlySystemParam, Option<Res<'w, InputFocusVisible>>: ReadOnlySystemParam,

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

where P0: ReadOnlySystemParam, P1: ReadOnlySystemParam,

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

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

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

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

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

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

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

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

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

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

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

where P0: ReadOnlySystemParam, P1: ReadOnlySystemParam, P2: ReadOnlySystemParam, P3: ReadOnlySystemParam, P4: ReadOnlySystemParam, P5: ReadOnlySystemParam, P6: ReadOnlySystemParam, P7: ReadOnlySystemParam, P8: ReadOnlySystemParam,

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

where P0: ReadOnlySystemParam, P1: ReadOnlySystemParam, P2: ReadOnlySystemParam, P3: ReadOnlySystemParam, P4: ReadOnlySystemParam, P5: ReadOnlySystemParam, P6: ReadOnlySystemParam, P7: ReadOnlySystemParam, P8: ReadOnlySystemParam, P9: ReadOnlySystemParam,

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

where P0: ReadOnlySystemParam, P1: ReadOnlySystemParam, P2: ReadOnlySystemParam, P3: ReadOnlySystemParam, P4: ReadOnlySystemParam, P5: ReadOnlySystemParam, P6: ReadOnlySystemParam, P7: ReadOnlySystemParam, P8: ReadOnlySystemParam, P9: ReadOnlySystemParam, P10: ReadOnlySystemParam,

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

where P0: ReadOnlySystemParam, P1: ReadOnlySystemParam, P2: ReadOnlySystemParam, P3: ReadOnlySystemParam, P4: ReadOnlySystemParam, P5: ReadOnlySystemParam, P6: ReadOnlySystemParam, P7: ReadOnlySystemParam, P8: ReadOnlySystemParam, P9: ReadOnlySystemParam, P10: ReadOnlySystemParam, P11: ReadOnlySystemParam,

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

where 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,

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

where 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,

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

where 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,

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

where 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,

impl<P> ReadOnlySystemParam for (P,)

where P: ReadOnlySystemParam,

impl<T> ReadOnlySystemParam for Option<T>

where T: ReadOnlySystemParam,

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

where T: ReadOnlySystemParam,

impl<T> ReadOnlySystemParam for PhantomData<T>

where T: ?Sized,

Implementors

impl ReadOnlySystemParam for FilteredResources<'_, '_>

impl ReadOnlySystemParam for WorldId

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 RemovedComponentMessages

impl<'a, 'b, D, F> ReadOnlySystemParam for Single<'a, 'b, D, F>

where D: ReadOnlyQueryData + 'static, F: QueryFilter + 'static,

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

where T: Resource,

impl<'s, T> ReadOnlySystemParam for Local<'s, T>

where T: FromWorld + Send + 'static,

impl<'w> ReadOnlySystemParam for &'w World

SAFETY: only reads world

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

where Res<'w, DiagnosticsStore>: ReadOnlySystemParam, Deferred<'s, DiagnosticsBuffer>: ReadOnlySystemParam,

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

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

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

where Query<'w, 's, (Entity, &'static Camera)>: ReadOnlySystemParam, Query<'w, 's, Entity, (With<Camera>, With<IsDefaultUiCamera>)>: ReadOnlySystemParam, Query<'w, 's, Entity, With<PrimaryWindow>>: ReadOnlySystemParam,

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

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

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

where MessageWriter<'w, Pointer<Cancel>>: ReadOnlySystemParam, MessageWriter<'w, Pointer<Click>>: ReadOnlySystemParam, MessageWriter<'w, Pointer<Press>>: ReadOnlySystemParam, MessageWriter<'w, Pointer<DragDrop>>: ReadOnlySystemParam, MessageWriter<'w, Pointer<DragEnd>>: ReadOnlySystemParam, MessageWriter<'w, Pointer<DragEnter>>: ReadOnlySystemParam, MessageWriter<'w, Pointer<Drag>>: ReadOnlySystemParam, MessageWriter<'w, Pointer<DragLeave>>: ReadOnlySystemParam, MessageWriter<'w, Pointer<DragOver>>: ReadOnlySystemParam, MessageWriter<'w, Pointer<DragStart>>: ReadOnlySystemParam, MessageWriter<'w, Pointer<Scroll>>: ReadOnlySystemParam, MessageWriter<'w, Pointer<Move>>: ReadOnlySystemParam, MessageWriter<'w, Pointer<Out>>: ReadOnlySystemParam, MessageWriter<'w, Pointer<Over>>: ReadOnlySystemParam, MessageWriter<'w, Pointer<Release>>: ReadOnlySystemParam,

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

where Query<'w, 's, &'static ChildOf>: ReadOnlySystemParam, Query<'w, 's, &'static Transform>: ReadOnlySystemParam,

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

where ResMut<'w, FallbackImageFormatMsaaCache>: ReadOnlySystemParam, Res<'w, RenderDevice>: ReadOnlySystemParam, Res<'w, RenderQueue>: ReadOnlySystemParam, Res<'w, DefaultImageSampler>: ReadOnlySystemParam,

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

where Query<'w, 's, Option<&'static Children>, With<Node>>: ReadOnlySystemParam, Query<'w, 's, Entity, Changed<Children>>: ReadOnlySystemParam, Query<'w, 's, &'static ChildOf>: ReadOnlySystemParam,

impl<'w, 's, D, F> ReadOnlySystemParam for Populated<'w, 's, D, F>

where D: ReadOnlyQueryData + 'static, F: QueryFilter + 'static,

impl<'w, 's, D, F> ReadOnlySystemParam for Query<'w, 's, D, F>

where D: ReadOnlyQueryData + 'static, F: QueryFilter + 'static,

impl<'w, 's, E> ReadOnlySystemParam for MessageMutator<'w, 's, E>

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

impl<'w, 's, E> ReadOnlySystemParam for MessageReader<'w, 's, E>

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

impl<'w, 's, E> ReadOnlySystemParam for MessageWriter<'w, E>

where E: Message, ResMut<'w, Messages<E>>: 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 for StaticSystemParam<'w, 's, P>

where P: ReadOnlySystemParam + 'static,

impl<'w, 's, R> ReadOnlySystemParam for TextReader<'w, 's, R>

where R: TextRoot, Local<'s, TextIterScratch>: ReadOnlySystemParam, Query<'w, 's, (&'static R, &'static TextFont, &'static TextColor, Option<&'static Children>)>: ReadOnlySystemParam, Query<'w, 's, (&'static TextSpan, &'static TextFont, &'static TextColor, Option<&'static Children>)>: ReadOnlySystemParam,

impl<'w, 's, R> ReadOnlySystemParam for TextWriter<'w, 's, R>

where R: TextRoot, ResMut<'w, TextIterScratch>: ReadOnlySystemParam, Query<'w, 's, (&'static mut R, &'static mut TextFont, &'static mut TextColor), Without<TextSpan>>: ReadOnlySystemParam, Query<'w, 's, (&'static mut TextSpan, &'static mut TextFont, &'static mut TextColor), Without<R>>: ReadOnlySystemParam, Query<'w, 's, &'static Children>: ReadOnlySystemParam,

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

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

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

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

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

impl<P> ReadOnlySystemParam for Extract<'_, '_, P>

where P: ReadOnlySystemParam,

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

where T: SystemBuffer,

impl<T> ReadOnlySystemParam for If<T>

where T: ReadOnlySystemParam,