Function AssignVolumeSpectraToRoom

editor/editor_lighting.cpp:781–826

Take the computed volume spectra of a room and save it in the room struct

// Take the computed volume spectra of a room and save it in the room struct
void AssignVolumeSpectraToRoom(int roomnum) {
  ASSERT(Rooms[roomnum].used);
  ASSERT(!(Rooms[roomnum].flags & RF_EXTERNAL));
  ASSERT(!(Rooms[roomnum].flags & RF_NO_LIGHT));

  room *rp = &Rooms[roomnum];

  int i, t, j;
  int w = rp->volume_width;
  int h = rp->volume_height;
  int d = rp->volume_depth;

  for (i = 0; i < d; i++) {
    for (t = 0; t < h; t++) {
      for (j = 0; j < w; j++) {
        spectra *this_spectra = &Volume_elements[roomnum][(i * w * h) + (t * w) + j].color;

        if (this_spectra->r < 0) {
          Int3(); // Shouldn't hit this
          rp->volume_lights[(i * w * h) + (t * w) + j] = INVISIBLE_VOLUME_ELEMENT;
        } else {
          float rmax = GetMaxColor(this_spectra);

          if (rmax > 1.0 && rmax > 0.0) {
            this_spectra->r /= rmax;
            this_spectra->g /= rmax;
            this_spectra->b /= rmax;
          }

          int r = (this_spectra->r * 7);
          r <<= 5;
          int g = (this_spectra->g * 7);
          g <<= 2;
          int b = (this_spectra->b * 3);

          uint8_t volume_color = r | g | b;

          if (!UseVolumeLights)
            rp->volume_lights[(i * w * h) + (t * w) + j] = 255;
          else
            rp->volume_lights[(i * w * h) + (t * w) + j] = volume_color;
        }
      }
    }
  }
}

// Returns 0 if there are bad faces in this level
int CheckForBadFaces(int roomnum) {