Function LoadGameState

Descent3/loadstate.cpp:264–415

////////////////////////////////////////////////////////////////////////// loads a game from a given slot.

///////////////////////////////////////////////////////////////////////////////
//	loads a game from a given slot.
int LoadGameState(const char *pathname) {
  CFILE *fp;
  int retval = LGS_OK;
  char desc[GAMESAVE_DESCLEN + 1];
  char path[_MAX_PATH];
  uint16_t version;
  uint16_t curlevel;
  int16_t pending_music_region;
  IsRestoredGame = true;
  //	load in stuff
  fp = cfopen(pathname, "rb");
  if (!fp) {
    Int3();
    return LGS_FILENOTFOUND;
  }

  START_VERIFY_SAVEFILE(fp);
  gs_Xlates = new gs_tables;

  // read in header and do version check.
  cf_ReadBytes((uint8_t *)desc, sizeof(desc), fp);
  version = (uint16_t)cf_ReadShort(fp);
  if (version < GAMESAVE_OLDVER) {
    Int3();
    retval = LGS_OUTDATEDVER;
    goto loadsg_error;
  }

  retval = LGSSnapshot(fp); // read and clear snapshot.
  if (retval > 0) {
    bm_FreeBitmap(retval);
  }

  // Gamesave_read_version=version;

  // read translation tables
  retval = LGSXlateTables(fp);
  if (retval != LGS_OK)
    goto loadsg_error;
  //	read in gamemode info.

  //	read in mission level info.
  curlevel = (uint16_t)cf_ReadShort(fp);
  cf_ReadString(path, sizeof(path), fp);

  if ((curlevel > 4) && (stricmp(path, "d3.mn3") == 0)) {
    strcpy(path, "d3_2.mn3");
  }

  //	must load mission and initialize level before reading in other data.
  retval = LGSMission(path, curlevel);
  if (retval != LGS_OK)
    goto loadsg_error;

  Current_mission.game_state_flags = cf_ReadInt(fp);
  // Increase count for how many times this file was restored
  IncreaseRestoreCount(pathname);