use ProjectileOrigin joint (#36)

src/character.rs

@@ -2,6 +2,9 @@ use crate::{GameState, heads_database::HeadsDatabase, loading_assets::GameAssets
 use bevy::{prelude::*, utils::HashMap};
 use std::time::Duration;
 
+#[derive(Component, Debug)]
+pub struct ProjectileOrigin;
+
 #[derive(Component, Debug)]
 pub struct AnimatedCharacter(pub usize);
 
@@ -17,7 +20,12 @@ pub struct CharacterAnimations {
 pub fn plugin(app: &mut App) {
     app.add_systems(
         Update,
-        (spawn, setup_once_loaded).run_if(in_state(GameState::Playing)),
+        (spawn, setup_once_loaded, setup_projectile_origin).run_if(in_state(GameState::Playing)),
+    );
+    #[cfg(feature = "dbg")]
+    app.add_systems(
+        Update,
+        debug_show_projectile_origin.run_if(in_state(GameState::Playing)),
     );
 }
 
@@ -48,6 +56,24 @@ fn spawn(
     }
 }
 
+fn setup_projectile_origin(
+    mut commands: Commands,
+    query: Query<Entity, Added<AnimationPlayer>>,
+    descendants: Query<&Children>,
+    name: Query<&Name>,
+) {
+    for character in query.iter() {
+        for child in descendants.iter_descendants(character) {
+            let Ok(name) = name.get(child) else {
+                continue;
+            };
+            if name.as_str() == "ProjectileOrigin" {
+                commands.entity(child).insert(ProjectileOrigin);
+            }
+        }
+    }
+}
+
 fn setup_once_loaded(
     mut commands: Commands,
     mut query: Query<(Entity, &mut AnimationPlayer), Added<AnimationPlayer>>,
@@ -100,3 +126,17 @@ fn setup_once_loaded(
             .insert(animations);
     }
 }
+
+#[cfg(feature = "dbg")]
+fn debug_show_projectile_origin(
+    mut gizmos: Gizmos,
+    query: Query<&GlobalTransform, With<ProjectileOrigin>>,
+) {
+    for projectile_origin in query.iter() {
+        gizmos.sphere(
+            Isometry3d::from_translation(projectile_origin.translation()),
+            0.1,
+            Color::linear_rgb(0., 1., 0.),
+        );
+    }
+}