use ProjectileOrigin joint (#36)

src/abilities/mod.rs

@@ -4,6 +4,7 @@ mod thrown;
 
 use crate::{
     aim::AimTarget,
+    character::ProjectileOrigin,
     global_observer,
     heads::ActiveHeads,
     heads_database::HeadsDatabase,
@@ -81,10 +82,12 @@ fn on_trigger_state(
     trigger: Trigger<TriggerState>,
     mut commands: Commands,
     player_rot: Query<&Transform, With<PlayerBodyMesh>>,
-    player_query: Query<(&Transform, &AimTarget), With<Player>>,
+    player_query: Query<(Entity, &AimTarget), With<Player>>,
     mut active_heads: Query<&mut ActiveHeads, With<Player>>,
     heads_db: Res<HeadsDatabase>,
     time: Res<Time>,
+    descendants: Query<&Children>,
+    projectile_origin: Query<&GlobalTransform, With<ProjectileOrigin>>,
 ) {
     if matches!(trigger.event(), TriggerState::Active) {
         let Ok(mut active_heads) = active_heads.get_single_mut() else {
@@ -100,10 +103,19 @@ fn on_trigger_state(
             return;
         }
 
-        let Some((transform, target)) = player_query.iter().next() else {
+        let Some((player, target)) = player_query.iter().next() else {
             return;
         };
 
+        let Some(transform) = descendants
+            .iter_descendants(player)
+            .find_map(|child| projectile_origin.get(child).ok())
+        else {
+            return;
+        };
+
+        let projectile_origin = transform.translation();
+
         let Some((rot, dir)) = player_rot.iter().next().map(|t| (t.rotation, t.forward())) else {
             return;
         };
@@ -111,7 +123,7 @@ fn on_trigger_state(
         let trigger_state = TriggerData {
             dir,
             rot,
-            pos: transform.translation,
+            pos: projectile_origin,
             target: target.0,
             target_layer: GameLayer::Npc,
             head: state.head,