bevy_hierarchy/
events.rs

1use bevy_ecs::{event::Event, prelude::Entity};
2
3/// An [`Event`] that is fired whenever there is a change in the world's hierarchy.
4///
5/// [`Event`]: bevy_ecs::event::Event
6#[derive(Event, Debug, Clone, PartialEq, Eq)]
7pub enum HierarchyEvent {
8    /// Fired whenever an [`Entity`] is added as a child to a parent.
9    ChildAdded {
10        /// The child that was added
11        child: Entity,
12        /// The parent the child was added to
13        parent: Entity,
14    },
15    /// Fired whenever a child [`Entity`] is removed from its parent.
16    ChildRemoved {
17        /// The child that was removed
18        child: Entity,
19        /// The parent the child was removed from
20        parent: Entity,
21    },
22    /// Fired whenever a child [`Entity`] is moved to a new parent.
23    ChildMoved {
24        /// The child that was moved
25        child: Entity,
26        /// The parent the child was removed from
27        previous_parent: Entity,
28        /// The parent the child was added to
29        new_parent: Entity,
30    },
31}
bevy_hierarchy/events.rs

bevy_hierarchy/
events.rs
