Struct ambient_api_core::ecs::UntrackedChangeQuery

pub struct UntrackedChangeQuery<Components: ComponentsTuple + Copy + Clone + 'static>(/* private fields */);

An ECS query that will call a callback when entities containing components marked with Self::track_change have those components change. This type represents a query that has not had any components marked for tracking yet.

Note that this cannot be built without calling Self::track_change at least once.

Implementations

impl<Components: ComponentsTuple + Copy + Clone + 'static> UntrackedChangeQuery<Components>

pub fn create(components: Components) -> Self

Creates a new query that will find entities that have the specified components. It will call its bound function when components marked by Self::track_change change.

pub fn track_change( self, changes: impl ComponentsTuple ) -> ChangeQuery<Components>

The query will return results when these components change values.

This converts this type to a ChangeQuery, which can be used to bind a callback.