Module change_detection

Types that detect when their internal data mutate.

Structs

Mut

Unique mutable borrow of an entity’s component

MutUntyped

Unique mutable borrow of resources or an entity’s component.

NonSendMut

Unique borrow of a non-Send resource.

Ref

Shared borrow of an entity’s component with access to change detection. Similar to Mut but is immutable and so doesn’t require unique access.

Res

Shared borrow of a Resource.

ResMut

Unique mutable borrow of a Resource.

Constants

CHECK_TICK_THRESHOLD

The (arbitrarily chosen) minimum number of world tick increments between check_tick scans.

MAX_CHANGE_AGE

The maximum change tick difference that won’t overflow before the next check_tick scan.

Traits

DetectChanges

Types that can read change detection information. This change detection is controlled by DetectChangesMut types such as ResMut.

DetectChangesMut

Types that implement reliable change detection.