spectator.py

#!/usr/bin/env python3

#####################################################################
# This script presents SPECTATOR mode. In SPECTATOR mode you play and
# your agent can learn from it.
# Configuration is loaded from "../../scenarios/<SCENARIO_NAME>.cfg" file.
#
# To see the scenario description go to "../../scenarios/README.md"
#####################################################################

import os
from argparse import ArgumentParser
from time import sleep

import vizdoom as vzd


DEFAULT_CONFIG = os.path.join(vzd.scenarios_path, "deathmatch.cfg")

if __name__ == "__main__":
    parser = ArgumentParser("ViZDoom example showing how to use SPECTATOR mode.")
    parser.add_argument(
        dest="config",
        default=DEFAULT_CONFIG,
        nargs="?",
        help="Path to the configuration file of the scenario."
        " Please see "
        "../../scenarios/*cfg for more scenarios.",
    )
    args = parser.parse_args()
    game = vzd.DoomGame()

    # Choose scenario config file you wish to watch.
    # Don't load two configs cause the second will overwrite the first one.
    # Multiple config files are ok but combining these ones doesn't make much sense.

    game.load_config(args.config)

    # Enables freelook in engine
    game.add_game_args("+freelook 1")

    game.set_screen_resolution(vzd.ScreenResolution.RES_640X480)

    # Enables spectator mode, so you can play. Sounds strange but it is the agent who is supposed to watch not you.
    game.set_window_visible(True)
    game.set_mode(vzd.Mode.SPECTATOR)

    game.init()

    episodes = 10

    for i in range(episodes):
        print(f"Episode #{i + 1}")

        game.new_episode()
        while not game.is_episode_finished():
            state = game.get_state()

            game.advance_action()
            last_action = game.get_last_action()
            reward = game.get_last_reward()

            print(f"State #{state.number}")
            print("Game variables: ", state.game_variables)
            print("Action:", last_action)
            print("Reward:", reward)
            print("=====================")

        print("Episode finished!")
        print("Total reward:", game.get_total_reward())
        print("************************")
        sleep(2.0)

    game.close()