use bevy::{prelude::*, ecs::entity::Entities};

/// The currently selected entity in the editor.
#[derive(Resource, Default, Reflect)]
#[reflect(Resource, Default)]
pub struct SelectedEntity(pub Option<Entity>);

/// System to reset [`SelectedEntity`] when the entity is despawned.
pub fn reset_selected_entity_if_entity_despawned(
    mut selected_entity: ResMut<SelectedEntity>,
    entities: &Entities,
) {
    if let Some(e) = selected_entity.0 {
        if !entities.contains(e) {
            selected_entity.0 = None;
        }
    }
}