Function SpewObjectNeedsEveryFrameUpdate

Descent3/spew.cpp:462–500

}

bool SpewObjectNeedsEveryFrameUpdate(object *obj, int gun_num) {
  poly_model *pm;
  vector pnt;
  vector normal;
  int mn; // submodel number
  float normalized_time[MAX_SUBOBJECTS];

  if (!(obj->flags & OF_POLYGON_OBJECT)) {
    return false;
  }

  pm = &Poly_models[obj->rtype.pobj_info.model_num];

  if (pm->n_guns == 0) {
    return false;
  }

  SetNormalizedTimeObj(obj, normalized_time);
  SetModelAnglesAndPos(pm, normalized_time);

  if (gun_num < 0 || gun_num >= pm->n_guns) {
    return false;
  }

  pnt = pm->gun_slots[gun_num].pnt;
  normal = pm->gun_slots[gun_num].norm;
  mn = pm->gun_slots[gun_num].parent;

  // Instance up the tree for this gun
  while (mn != -1) {
    if (pm->submodel[mn].flags & (SOF_ROTATE | SOF_TURRET)) {
      return true;
    }

    mn = pm->submodel[mn].parent;
  }

  return false;
}