bool OSystem::createConsole()

in atari_py/ale_interface/src/emucore/OSystem.cxx [351:440]
70 lines of code
9 McCabe index (conditional complexity)

bool OSystem::createConsole(const string& romfile)
{
  // Do a little error checking; it shouldn't be necessary
  if(myConsole) deleteConsole();

  bool retval = false; 

  // If a blank ROM has been given, we reload the current one (assuming one exists)
  if(romfile == "")
  {
    if(myRomFile == "")
    {
      ale::Logger::Error << "ERROR: Rom file not specified ..." << endl;
      return false;
    }
  }
  else
    myRomFile = romfile;

  // Open the cartridge image and read it in
  uInt8* image;
  int size = -1;
  string md5;
  if(openROM(myRomFile, md5, &image, &size))
  {
    // Get all required info for creating a valid console
    Cartridge* cart = (Cartridge*) NULL;
    Properties props;
    if(queryConsoleInfo(image, size, md5, &cart, props))
    {
      // Create an instance of the 2600 game console
      myConsole = new Console(this, cart, props);
      m_colour_palette.loadUserPalette(paletteFile());

    #ifdef CHEATCODE_SUPPORT
      myCheatManager->loadCheats(md5);
    #endif
      //ALE  myEventHandler->reset(EventHandler::S_EMULATE);
      //ALE  createFrameBuffer(false);  // Takes care of initializeVideo()
      //ALE  myConsole->initializeAudio();
    #ifdef DEBUGGER_SUPPORT
      myDebugger->setConsole(myConsole);
      myDebugger->initialize();
    #endif

      if(mySettings->getBool("showinfo"))
        cerr << "Game console created:" << endl
             << "  ROM file:  " << myRomFile << endl
             << myConsole->about() << endl;
      else
        ale::Logger::Info << "Game console created:" << endl
             << "  ROM file:  " << myRomFile << endl
             << myConsole->about() << endl;

      // Update the timing info for a new console run
      resetLoopTiming();

      //ALE  myFrameBuffer->setCursorState();
      retval = true;
    }
    else
    {
      ale::Logger::Error << "ERROR: Couldn't create console for " << myRomFile << " ..." << endl;
      retval = false;
    }
  }
  else
  {
    ale::Logger::Error << "ERROR: Couldn't open " << myRomFile << " ..." << endl;
    retval = false;
  }

  // Free the image since we don't need it any longer
  if(size != -1) {
    delete[] image;
  }
  if (mySettings->getBool("display_screen", true)) {
#ifndef __USE_SDL
    ale::Logger::Error << "Screen display requires directive __USE_SDL to be defined."
                            << " Please recompile with flag '-D__USE_SDL'."
                            << " See makefile for more information."
                            << std::endl;
    exit(1);
#endif
    p_display_screen = new DisplayScreen(&myConsole->mediaSource(),
                                         mySound, m_colour_palette); 
  }

  return retval;
}