Function ReadNewLightmapChunk

Descent3/LoadLevel.cpp:2661–2755

Reads info about our lightmaps

// Reads info about our lightmaps
void ReadNewLightmapChunk(CFILE *fp, int version) {
  int nummaps;
  int i;

  // Don't read lightmaps for dedicated server
  if (Dedicated_server) {
    Num_lightmap_infos_read = 0; // I don't think this will be used, but clear it just in case
    return;
  }

  uint16_t *lightmap_remap = (uint16_t *)mem_malloc(MAX_LIGHTMAPS * sizeof(uint16_t));

  nummaps = cf_ReadInt(fp);

  mprintf(0, "Reading %d unique lightmaps\n", nummaps);

  for (i = 0; i < nummaps; i++) {
    int w, h;
    if (nummaps >= 5) {
      if ((i % (nummaps / 5)) == 0) {
        LoadLevelProgress(LOAD_PROGRESS_LOADING_LEVEL,
                          (filelen) ? (float)(chunk_start + ((((chunk_size) / nummaps) * i) / 2)) / (float)filelen
                                    : 0.0f,
                          CHUNK_LIGHTMAPS);
      }
    }
    w = cf_ReadShort(fp);
    h = cf_ReadShort(fp);

    int lm_handle = lm_AllocLightmap(w, h);

    lightmap_remap[i] = lm_handle;
    uint16_t *data = (uint16_t *)lm_data(lm_handle);
    ReadCompressionShort(fp, data, w * h);
  }

  nummaps = cf_ReadInt(fp);

  Num_lightmap_infos_read = nummaps;
  ASSERT(nummaps < MAX_LIGHTMAP_INFOS);

  for (i = 0; i < nummaps; i++) {
    int w, h, lmi;
    uint8_t type;
    if (nummaps >= 50) {
      if ((i % (nummaps / 50)) == 0) {
        LoadLevelProgress(LOAD_PROGRESS_LOADING_LEVEL,
                          (filelen) ? (float)(chunk_start + (chunk_size / 2) + (((chunk_size / 2) / nummaps) * i)) /
                                          (float)filelen
                                    : 0.0f,
                          CHUNK_LIGHTMAPS);
      }
    }
    int remap_handle = cf_ReadShort(fp);
    w = cf_ReadShort(fp);
    h = cf_ReadShort(fp);
    type = cf_ReadByte(fp);