void checkInRadius(int id, QuestState st, NpcInstance npc) {
   NpcInstance quest0457 = GameObjectsStorage.getByNpcId(id);
   if (npc.getRealDistance3D(quest0457) <= 150.0D) {
     st.setCond(2);
     if (_followTask != null) {
       _followTask.cancel(false);
     }
     _followTask = null;
     npc.stopMove();
   }
 }