simple rotate to player ai while engaging

src/npc.rs

@@ -43,8 +43,8 @@ fn init(mut commands: Commands, query: Query<(Entity, &EnemySpawn)>, heads_db: R
                     None,
                     None,
                 ]),
-                Ai,
             ))
+            .insert_if(Ai, || !spawn.disable_ai)
             .with_child((Name::from("body-rig"), AnimatedCharacter(id)))
             .observe(on_kill);
     }