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propagate add reflect #20197

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Merged
merged 2 commits into from
Jul 20, 2025
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propagate add reflect #20197

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48a553d
propagate add reflect
rendaoer Jul 19, 2025
022f07b
Merge branch 'main' into propagate_reflect
rendaoer Jul 20, 2025
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14 changes: 14 additions & 0 deletions crates/bevy_app/src/propagate.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -8,10 +8,12 @@ use bevy_ecs::{
hierarchy::ChildOf,
lifecycle::RemovedComponents,
query::{Changed, Or, QueryFilter, With, Without},
reflect::ReflectComponent,
relationship::{Relationship, RelationshipTarget},
schedule::{IntoScheduleConfigs, SystemSet},
system::{Commands, Local, Query},
};
use bevy_reflect::Reflect;

/// Plugin to automatically propagate a component value to all direct and transient relationship
/// targets (e.g. [`bevy_ecs::hierarchy::Children`]) of entities with a [`Propagate`] component.
Expand All @@ -38,15 +40,22 @@ pub struct HierarchyPropagatePlugin<
/// targets. A target with a [`Propagate<C>`] component of its own will override propagation from
/// that point in the tree.
#[derive(Component, Clone, PartialEq)]
#[cfg_attr(
feature = "bevy_reflect",
derive(Reflect),
reflect(Component, Clone, PartialEq)
)]
pub struct Propagate<C: Component + Clone + PartialEq>(pub C);

/// Stops the output component being added to this entity.
/// Relationship targets will still inherit the component from this entity or its parents.
#[derive(Component)]
#[cfg_attr(feature = "bevy_reflect", derive(Reflect), reflect(Component))]
pub struct PropagateOver<C>(PhantomData<fn() -> C>);

/// Stops the propagation at this entity. Children will not inherit the component.
#[derive(Component)]
#[cfg_attr(feature = "bevy_reflect", derive(Reflect), reflect(Component))]
pub struct PropagateStop<C>(PhantomData<fn() -> C>);

/// The set in which propagation systems are added. You can schedule your logic relative to this set.
Expand All @@ -57,6 +66,11 @@ pub struct PropagateSet<C: Component + Clone + PartialEq> {

/// Internal struct for managing propagation
#[derive(Component, Clone, PartialEq)]
#[cfg_attr(
feature = "bevy_reflect",
derive(Reflect),
reflect(Component, Clone, PartialEq)
)]
pub struct Inherited<C: Component + Clone + PartialEq>(pub C);

impl<C: Component + Clone + PartialEq, F: QueryFilter, R: Relationship> Default
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