mirror of
https://github.com/bevyengine/bevy
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81db6ec70a
# Objective
Run this without this PR:
`cargo build -p bevy_hierarchy --no-default-features`
You'll get:
```
error[E0432]: unresolved import `bevy_reflect`
--> crates/bevy_hierarchy/src/events.rs:2:5
|
2 | use bevy_reflect::Reflect;
| ^^^^^^^^^^^^ use of undeclared crate or module `bevy_reflect`
For more information about this error, try `rustc --explain E0432`.
error: could not compile `bevy_hierarchy` (lib) due to 1 previous error
warning: build failed, waiting for other jobs to finish...
```
Because of this line:
```rs
use bevy_reflect::Reflect;
#[derive(Event, Debug, Clone, PartialEq, Eq)]
#[cfg_attr(feature = "reflect", derive(Reflect), reflect(Debug, PartialEq))]
pub enum HierarchyEvent { .. }
```
## Solution
use FQN: `derive(bevy_reflect::Reflect)`
## Testing
`cargo build -p bevy_hierarchy --no-default-features`
34 lines
1.1 KiB
Rust
34 lines
1.1 KiB
Rust
use bevy_ecs::{event::Event, prelude::Entity};
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#[cfg(feature = "reflect")]
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use bevy_reflect::Reflect;
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/// An [`Event`] that is fired whenever there is a change in the world's hierarchy.
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///
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/// [`Event`]: bevy_ecs::event::Event
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#[derive(Event, Debug, Clone, PartialEq, Eq)]
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#[cfg_attr(feature = "reflect", derive(Reflect), reflect(Debug, PartialEq))]
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pub enum HierarchyEvent {
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/// Fired whenever an [`Entity`] is added as a child to a parent.
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ChildAdded {
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/// The child that was added
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child: Entity,
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/// The parent the child was added to
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parent: Entity,
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},
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/// Fired whenever a child [`Entity`] is removed from its parent.
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ChildRemoved {
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/// The child that was removed
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child: Entity,
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/// The parent the child was removed from
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parent: Entity,
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},
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/// Fired whenever a child [`Entity`] is moved to a new parent.
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ChildMoved {
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/// The child that was moved
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child: Entity,
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/// The parent the child was removed from
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previous_parent: Entity,
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/// The parent the child was added to
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new_parent: Entity,
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},
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}
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