Expand description
Most commonly used re-exported types.
Structs
A filter on a component that only retains results added after the system last ran.
The
AnyOf query parameter fetches entities with any of the component types included in T.WorldQuery that tracks changes and additions for component T.A filter on a component that only retains results added or mutably dereferenced after the system last ran.
Reads events of type
T in order and tracks which events have already been read.Sends events of type
T.An event collection that represents the events that occurred within the last two
Events::update calls.
Events can be written to using an EventWriter
and are typically cheaply read using an EventReader.Wrapper type to mark a
SystemParam as an input.A system local
SystemParam.Unique mutable borrow of an entity’s component
Unique borrow of a non-
Send resource.A filter that tests if any of the given filters apply.
An alternative to
Commands that can be used in parallel contexts, such as those in Query::par_for_eachProvides scoped access to a
World state according to a given WorldQuery and query filter.A struct used to operate on reflected
Component of a type.A struct used to operate on reflected
Resource of a type.Stack based state machine
A builder for describing several systems at the same time.
Stores and executes systems. Execution order is not defined unless explicitly specified;
see
SystemDescriptor documentation.Filter that selects entities with a component
T.Filter that selects entities without a component
T.Stores and exposes operations on entities, components, resources,
and their associated metadata.
Traits
Types that implement reliable change detection.
Creates an instance of the type this trait is implemented for
using data from the supplied World.
An extension trait providing the
IntoPipeSystem::pipe method to pass input from one system into the next.Conversion trait to turn something into a
System.A strongly-typed class of labels used to identify run criteria.
A strongly-typed class of labels used to identify
Stages.A strongly-typed class of labels used to identify
Systems.A trait implemented for all functions that can be used as
Systems.Derive Macros
Generates an impl of the
RunCriteriaLabel trait.Generates an impl of the
StageLabel trait.Generates an impl of the
SystemLabel trait.