void Settings::usage()

in atari_py/ale_interface/src/emucore/Settings.cxx [263:329]

• 66 lines of code
• 1 McCabe index (conditional complexity)

void Settings::usage() {

    cerr << "\n"
       " ***************************************************************************\n"
       " * Welcome to A.L.E (Arcade Learning Environment)\n"
       " * (Powered by Stella)\n"
       " ***************************************************************************\n"
       "\n"
       " Usage: ale [options ...] romfile\n"
       "\n"
       " Main arguments:\n"
       "   -help -- prints out help information\n"
       "   -game_controller [fifo|fifo_named"
#ifdef __USE_RLGLUE
       "|rlglue"
#endif
       "] (default: unset)\n"
       "      Defines how Stella communicates with the player agent:\n"
       "            - 'fifo':       Control occurs through FIFO pipes\n"
       "            - 'fifo_named': Control occurs through named FIFO pipes\n"
#ifdef __USE_RLGLUE
       "            - 'rlglue':     External control via RL-Glue\n"
#endif
       "   -random_seed [n|time] (default: time)\n"
       "     Sets the seed used for random number generation\n"
#ifdef __USE_SDL
       "   -display_screen [true|false] (default: false)\n"
       "     Displays the game screen\n"
#endif
#ifdef SOUND_SUPPORT
       "   -sound [true|false] (default: false)\n"
       "     Enable game sounds\n"
#endif
       "\n"
       " Environment arguments:\n"
       "   -max_num_frames m (default: 0)\n"
       "     The program will quit after this number of frames. 0 means never.\n"
       "   -max_num_frames_per_episode m (default: 0)\n"
       "     Ends each episode after this number of frames. 0 means never.\n"
       "   -color_averaging [true|false] (default: false)\n"
       "     Phosphor blends screens to reduce flicker\n"
       "   -record_screen_dir [save_directory]\n"
       "     Saves game screen images to save_directory\n"
       "   -repeat_action_probability (default: 0.25)\n"
       "     Stochasticity in the environment. It is the probability the previous "
                "action will repeated without executing the new one.\n"
       "\n"
       " FIFO Controller arguments:\n"
       "   -run_length_encoding [true|false] (default: true)\n"
       "     Encodes data using run-length encoding\n"
       "\n"
#ifdef __USE_RLGLUE
       " RL-Glue Controller arguments:\n"
       "   -send_rgb [true|false] (default: false)\n"
       "     Sends RGB values for each pixel instead of the pallette index values\n"
       "   -restricted_action_set [true|false] (default: false)\n"
       "     Agents use a smaller set of actions (RL-Glue interfaces only)\n"
       "\n"
#endif
       " Misc. arguments:\n"
       "   -ld [A/B] (default: B)\n"
       "     Left player difficulty. B means easy.\n"
       "   -rd [A/B] (default: B)\n"
       "     Right player difficulty. B means easy.\n"
       "\n"
    ; // Closing the std::cerr statement
}