Function DoRadiosityForCurrentRoom

editor/editor_lighting.cpp:1152–1306

Calculates radiosity and sets lightmaps for indoor faces only

// Calculates radiosity and sets lightmaps for indoor faces only
void DoRadiosityForCurrentRoom(room *rp) {
  int t;
  int facecount = 0;
  int surface_index = 0;
  int max_index;

  if (!CheckForBadFaces(rp - Rooms)) {
    OutrageMessageBox("You have bad faces in your level.  Please do a Verify Level.");
    return;
  }

  mprintf(0, "Setting up...\n");

  ASSERT(rp != NULL);
  ASSERT(rp->used);

  if (rp->flags & RF_EXTERNAL) {
    OutrageMessageBox("You cannot run single room radiosity on external rooms!");
    return;
  }

  if (rp->flags & RF_NO_LIGHT) {
    OutrageMessageBox("You cannot run single room radiosity on a room marked not to light!");
    return;
  }

  // Build bsp tree
  BuildSingleBSPTree(rp - Rooms);

  ClearRoomLightmaps(rp - Rooms);
  for (t = 0; t <= Highest_object_index; t++) {
    if (Objects[t].type != OBJ_NONE && (Objects[t].roomnum == rp - Rooms))
      ClearObjectLightmaps(&Objects[t]);
  }

  // Build lightmap uvs
  for (t = 0; t < rp->num_faces; t++) {
    vector verts[MAX_VERTS_PER_FACE * 5];
    int room_list[2], face_list[2];
    for (int k = 0; k < rp->faces[t].num_verts; k++)
      verts[k] = rp->verts[rp->faces[t].face_verts[k]];

    room_list[0] = rp - Rooms;
    face_list[0] = t;

    BuildLightmapUVs(room_list, face_list, 1, verts, rp->faces[t].num_verts, 0);
  }

  // First count how many faces we'll need
  facecount += rp->num_faces;

  // Do objects
  facecount += GetTotalObjectFacesForSingleRoom(rp - Rooms);

  // Allocate enough memory to hold all surfaces

  Light_surfaces = (rad_surface *)mem_malloc(facecount * sizeof(rad_surface));
  ASSERT(Light_surfaces != NULL);