Function InitIOSystems

Descent3/init.cpp:1399–1555

I/O systems initialization */

        I/O systems initialization
*/
void InitIOSystems(bool editor) {
  ddio_init_info io_info;

  // Set the base directory
  int dirarg = FindArg("-setdir");
  int exedirarg = FindArg("-useexedir");
  if (dirarg) {
    strncpy(Base_directory, GameArgs[dirarg + 1], sizeof(Base_directory) - 1);
    Base_directory[sizeof(Base_directory) - 1] = '\0';
  } else if (exedirarg) {
    char exec_path[_MAX_PATH];
    memset(exec_path, 0, sizeof(exec_path));
    // Populate exec_path with the executable path
    if (!ddio_GetBinaryPath(exec_path, sizeof(exec_path))) {
      Error("Failed to get executable path\n");
    } else {
      std::filesystem::path executablePath(exec_path);
      std::string baseDirectoryString = executablePath.parent_path().string();
      strncpy(Base_directory, baseDirectoryString.c_str(), sizeof(Base_directory) - 1);
      Base_directory[sizeof(Base_directory) - 1] = '\0';
      mprintf(0, "Using working directory of %s\n", Base_directory);
    }
  } else {
    ddio_GetWorkingDir(Base_directory, sizeof(Base_directory));
  }

  ddio_SetWorkingDir(Base_directory);

  Descent->set_defer_handler(D3DeferHandler);

#ifndef RELEASE
  if (!editor && !FindArg("-windowed")) {
    if (Dedicated_server) {
      ddio_MouseMode(MOUSE_STANDARD_MODE);
    } else {
      ddio_MouseMode(MOUSE_EXCLUSIVE_MODE);
    }
  }
#else
  ddio_MouseMode(MOUSE_EXCLUSIVE_MODE);
#endif

  //	do io init stuff
  io_info.obj = Descent;
  io_info.joy_emulation = (bool)((FindArg("-alternatejoy") == 0) && (FindArg("-directinput") == 0));
  io_info.key_emulation = true; //(bool)(FindArg("-slowkey")!=0); WIN95: DirectInput is flaky for some keys.
  INIT_MESSAGE(("Initializing DDIO systems."));
  if (!ddio_Init(&io_info)) {
    Error("I/O initialization failed.");
  }

  rtp_Init();
  RTP_ENABLEFLAGS(RTI_FRAMETIME | RTI_RENDERFRAMETIME | RTI_MULTIFRAMETIME | RTI_MUSICFRAMETIME |
                  RTI_AMBSOUNDFRAMETIME);
  RTP_ENABLEFLAGS(RTI_WEATHERFRAMETIME | RTI_PLAYERFRAMETIME | RTI_DOORFRAMETIME | RTI_LEVELGOALTIME |
                  RTI_MATCENFRAMETIME);
  RTP_ENABLEFLAGS(RTI_OBJFRAMETIME | RTI_AIFRAMETIME | RTI_PROCESSKEYTIME);