Function DeleteRoomFace

editor/Erooms.cpp:1697–1786

Delete a face from a room Parameters: rp - the room the face is in facenum - the face to be deleted

// Parameters:	rp - the room the face is in
//					facenum - the face to be deleted
void DeleteRoomFace(room *rp, int facenum, bool delete_unused_verts) {
  int p, f, i, t;
  face *newfaces;

  // Check for trigger on this face
  if (rp->faces[facenum].flags & FF_HAS_TRIGGER)
    DeleteTrigger(ROOMNUM(rp), facenum);

  // Adjust face numbers in portals
  for (p = 0; p < rp->num_portals; p++) {
    portal *pp = &rp->portals[p];
    ASSERT(pp->portal_face != facenum);
    if (pp->portal_face > facenum)
      pp->portal_face--;
  }

  // Adjust face numbers in triggers
  for (t = 0; t < Num_triggers; t++) {
    trigger *tp = &Triggers[t];
    if (tp->roomnum == ROOMNUM(rp)) {
      ASSERT(tp->facenum != facenum);
      if (tp->facenum > facenum)
        tp->facenum--;
    }
  }

  // Allocate new face list
  newfaces = (face *)mem_malloc(sizeof(*newfaces) * (rp->num_faces - 1));
  ASSERT(newfaces != NULL);

  // Copy faces over
  for (f = 0; f < facenum; f++)
    newfaces[f] = rp->faces[f];
  for (f++; f < rp->num_faces; f++)
    newfaces[f - 1] = rp->faces[f];

#ifdef NEWEDITOR
  // Decrement texture usage
  if (ROOMNUM(rp) < MAX_ROOMS) {
    LevelTexDecrementTexture(rp->faces[facenum].tmap);
    //@@RoomTexDecrementTexture(rp->faces[facenum].tmap,m_Textures_in_use,false);
  } else {
    // TODO: for room tab, replace second line with first
    ned_MarkTextureInUse(rp->faces[facenum].tmap, false);
    //@@RoomTexDecrementTexture(rp->faces[facenum].tmap,m_Textures_in_use);
  }
#endif

  // Free deleted face memeory
  FreeRoomFace(&rp->faces[facenum]);

  // Free old face list
  mem_free(rp->faces);

  // Use new face list
  rp->faces = newfaces;
  rp->num_faces--;