Function RoomAddFaces

editor/Erooms.cpp:1423–1455

Create space for additional faces in a room. Allocates a new faces array, copies from the old list, and frees the old list The new faces are at the end of the list, so none of the old faces change number Parameters: rp - the room num_new_faces - how many faces are being added to the room Returns: the number of the first new face

//					num_new_faces - how many faces are being added to the room
// Returns:		the number of the first new face
int RoomAddFaces(room *rp, int num_new_faces) {
  int i;

  if (num_new_faces == 0)
    return 0;

  face *newfaces = (face *)mem_malloc((rp->num_faces + num_new_faces) * sizeof(*newfaces));

  ASSERT(newfaces != NULL);

  for (i = 0; i < rp->num_faces; i++)
    newfaces[i] = rp->faces[i];

  mem_free(rp->faces);

  rp->faces = newfaces;
  rp->num_faces += num_new_faces;

  if (rp->num_bbf_regions) {
    for (i = 0; i < rp->num_bbf_regions; i++) {
      mem_free(rp->bbf_list[i]);
    }
    mem_free(rp->bbf_list);
    mem_free(rp->num_bbf);
    mem_free(rp->bbf_list_min_xyz);
    mem_free(rp->bbf_list_max_xyz);
    mem_free(rp->bbf_list_sector);

    rp->num_bbf_regions = 0;
  }

  return (rp->num_faces - num_new_faces);
}

// Check if a point is inside, outside, or on an edge of a polygon
// Parameters:	checkv - the point to be checked