Function EBNode_InsertNodeOnEdge

editor/ebnode.cpp:724–783

}

int EBNode_InsertNodeOnEdge(int spnt, int sroom, int epnt, int eroom) {
  int i;

  BNode_verified = false;

  bn_list *snlist;
  snlist = BNode_GetBNListPtr(sroom);
  bn_list *enlist;
  enlist = BNode_GetBNListPtr(eroom);

  bool f_exists = false;
  int e_index;

  // Check to see if this edge already exists
  for (i = 0; i < snlist->nodes[spnt].num_edges; i++) {
    if (snlist->nodes[spnt].edges[i].end_index == epnt && snlist->nodes[spnt].edges[i].end_room == eroom) {
      e_index = i;
      f_exists = true;
      break;
    }
  }

  ASSERT(f_exists);

  vector new_pos = (snlist->nodes[spnt].pos + enlist->nodes[epnt].pos) / 2.0f;
  fvi_info hit_info;
  hit_info.hit_room = sroom;

  if (sroom != eroom) {
    fvi_query fq;
    int fate;

    // shoot a ray from the light position to the current vertex
    fq.p0 = &snlist->nodes[spnt].pos;
    fq.p1 = &enlist->nodes[epnt].pos;
    fq.startroom = (sroom > Highest_room_index && sroom <= Highest_room_index + 8)
                       ? GetTerrainRoomFromPos(&snlist->nodes[spnt].pos)
                       : sroom;

    fq.rad = 0.0f;
    fq.flags = FQ_IGNORE_RENDER_THROUGH_PORTALS;
    fq.thisobjnum = -1;
    fq.ignore_obj_list = NULL;

    fate = fvi_FindIntersection(&fq, &hit_info);

    if (fate != HIT_NONE) {
      OutrageMessageBox("You can only do this function if the 2 nodes can\nsee each other or are in the same room.\n");
      return -1;
    }
  }

  int n_index = EBNode_AddNode(hit_info.hit_room, &new_pos, false, false);
  EBNode_AddEdge(n_index, hit_info.hit_room, spnt, sroom);
  EBNode_AddEdge(n_index, hit_info.hit_room, epnt, eroom);

  EBNode_RemoveEdge(epnt, eroom, spnt, sroom);