class Emulate:
def __init__(self, rom_file, display_screen=False,frame_skip=4,screen_height=84,screen_width=84,repeat_action_probability=0,color_averaging=True,random_seed=0,record_screen_path='screen_pics',record_sound_filename=None,minimal_action_set=True):
self.ale = ALEInterface()
if display_screen:
if sys.platform == 'darwin':
import pygame
pygame.init()
self.ale.setBool('sound', False) # Sound doesn't work on OSX
elif sys.platform.startswith('linux'):
self.ale.setBool('sound', True)
self.ale.setBool('display_screen', True)
self.ale.setInt('frame_skip', frame_skip)
self.ale.setFloat('repeat_action_probability', repeat_action_probability)
self.ale.setBool('color_averaging', color_averaging)
if random_seed:
self.ale.setInt('random_seed', random_seed)
self.ale.loadROM(rom_file)
if minimal_action_set:
self.actions = self.ale.getMinimalActionSet()
else:
self.actions = self.ale.getLegalActionSet()
self.dims = (screen_width,screen_height)
def numActions(self):
return len(self.actions)
def getActions(self):
return self.actions
def restart(self):
self.ale.reset_game()
def act(self, action):
reward = self.ale.act(self.actions[action])
return reward
def getScreen(self):
screen = self.ale.getScreenGrayscale()
resized = cv2.resize(screen, self.dims)
return resized
def getScreenGray(self):
screen = self.ale.getScreenGrayscale()
resized = cv2.resize(screen, self.dims)
rotated = np.rot90(resized,k=1)
return rotated
def getScreenColor(self):
screen = self.ale.getScreenRGB()
resized = cv2.resize(screen, self.dims)
rotated = np.rot90(resized,k=1)
return rotated
def isTerminal(self):
return self.ale.game_over()
class FastAtariEnv(AtariEnv):
def __init__(self,
game='Breakout',
obs_type='image',
frameskip=(2, 5),
repeat_action_probability=0.):
self.game_path = atari_py.get_game_path(game)
self._obs_type = obs_type
self.frameskip = frameskip
self.ale = ALEInterface()
self.viewer = None
assert isinstance(
repeat_action_probability,
(float, int)), "Invalid repeat_action_probability: {!r}".format(
repeat_action_probability)
self.ale.setFloat('repeat_action_probability'.encode('utf-8'),
repeat_action_probability)
self._seed()
(screen_width, screen_height) = self.ale.getScreenDims()
self._buffer = np.empty((screen_height, screen_width, 3),
dtype=np.uint8)
def _get_image(self):
# Don't reorder from rgb to bgr as we're converting to greyscale anyway
self.ale.getScreenRGB(self._buffer) # says rgb but actually bgr
return self._buffer
def initializeALE(romFile, rec_dir):
ale = ALEInterface()
max_frames_per_episode = ale.getInt("max_num_frames_per_episode")
ale.setInt("random_seed", 123)
ale.setFloat("repeat_action_probability", 0.0)
ale.setInt("frame_skip", 5)
# Set record flags
ale.setString(b'record_screen_dir', rec_dir + '/')
ale.setString("record_sound_filename", rec_dir + "/sound.wav")
# We set fragsize to 64 to ensure proper sound sync
ale.setInt("fragsize", 64)
# Set USE_SDL to true to display the screen. ALE must be compilied
# with SDL enabled for this to work. On OSX, pygame init is used to
# proxy-call SDL_main.
USE_SDL = False
if USE_SDL:
if sys.platform == 'darwin':
import pygame
pygame.init()
ale.setBool('sound', False) # Sound doesn't work on OSX
elif sys.platform.startswith('linux'):
ale.setBool('sound', True)
ale.setBool('display_screen', True)
ale.loadROM(romFile)
actionSet = ale.getMinimalActionSet()
return ale, actionSet
class Environment:
def __init__(self, rom_file, args):
self.ale = ALEInterface()
if args.display_screen:
if sys.platform == 'darwin':
import pygame
pygame.init()
self.ale.setBool('sound', False) # Sound doesn't work on OSX
elif sys.platform.startswith('linux'):
self.ale.setBool('sound', True)
self.ale.setBool('display_screen', True)
self.ale.setInt('frame_skip', args.frame_skip)
self.ale.setFloat('repeat_action_probability', args.repeat_action_probability)
self.ale.setBool('color_averaging', args.color_averaging)
if args.random_seed:
self.ale.setInt('random_seed', args.random_seed)
if args.record_screen_path:
if not os.path.exists(args.record_screen_path):
logger.info("Creating folder %s" % args.record_screen_path)
os.makedirs(args.record_screen_path)
logger.info("Recording screens to %s", args.record_screen_path)
self.ale.setString('record_screen_dir', args.record_screen_path)
if args.record_sound_filename:
logger.info("Recording sound to %s", args.record_sound_filename)
self.ale.setBool('sound', True)
self.ale.setString('record_sound_filename', args.record_sound_filename)
self.ale.loadROM(rom_file)
if args.minimal_action_set:
self.actions = self.ale.getMinimalActionSet()
logger.info("Using minimal action set with size %d" % len(self.actions))
else:
self.actions = self.ale.getLegalActionSet()
logger.info("Using full action set with size %d" % len(self.actions))
logger.debug("Actions: " + str(self.actions))
self.dims = (args.screen_height, args.screen_width)
def numActions(self):
return len(self.actions)
def restart(self):
self.ale.reset_game()
def act(self, action):
reward = self.ale.act(self.actions[action])
return reward
def getScreen(self):
screen = self.ale.getScreenGrayscale()
resized = cv2.resize(screen, self.dims)
return resized
def isTerminal(self):
return self.ale.game_over()
class env_atari:
def __init__(self, params):
self.params = params
self.ale = ALEInterface()
self.ale.setInt('random_seed', np.random.randint(0, 500))
self.ale.setFloat('repeat_action_probability', params['repeat_prob'])
self.ale.setInt(b'frame_skip', params['frameskip'])
self.ale.setBool('color_averaging', True)
self.ale.loadROM('roms/' + params['rom'] + '.bin')
self.actions = self.ale.getMinimalActionSet()
self.action_space = c_action_space(len(self.actions))
self.screen_width, self.screen_height = self.ale.getScreenDims()
def reset(self):
self.ale.reset_game()
seed = np.random.randint(0, 7)
for i in range(seed):
self.ale.act(0)
return self.get_image()
def step(self, action):
reward = self.ale.act(self.actions[action])
next_s = self.get_image()
terminate = self.ale.game_over()
return next_s, reward, float(terminate), 0
def get_image(self):
temp = np.zeros(self.screen_height * self.screen_width * 3,
dtype=np.uint8)
self.ale.getScreenRGB(temp)
#self.ale.getScreenGrayscale(temp)
return temp.reshape((self.screen_height, self.screen_width, 3))
def __init__(self,
game,
seed=None,
use_sdl=False,
n_last_screens=4,
frame_skip=4,
treat_life_lost_as_terminal=True,
crop_or_scale='scale',
max_start_nullops=30,
record_screen_dir=None):
self.n_last_screens = n_last_screens
self.treat_life_lost_as_terminal = treat_life_lost_as_terminal
self.crop_or_scale = crop_or_scale
self.max_start_nullops = max_start_nullops
# atari_py is used only to provide rom files. atari_py has its own
# ale_python_interface, but it is obsolete.
game_path = atari_py.get_game_path(game)
ale = ALEInterface()
if seed is not None:
assert seed >= 0 and seed < 2 ** 16, \
"ALE's random seed must be represented by unsigned int"
else:
# Use numpy's random state
seed = np.random.randint(0, 2**16)
ale.setInt(b'random_seed', seed)
ale.setFloat(b'repeat_action_probability', 0.0)
ale.setBool(b'color_averaging', False)
if record_screen_dir is not None:
ale.setString(b'record_screen_dir',
str.encode(str(record_screen_dir)))
self.frame_skip = frame_skip
if use_sdl:
if 'DISPLAY' not in os.environ:
raise RuntimeError(
'Please set DISPLAY environment variable for use_sdl=True')
# SDL settings below are from the ALE python example
if sys.platform == 'darwin':
import pygame
pygame.init()
ale.setBool(b'sound', False) # Sound doesn't work on OSX
elif sys.platform.startswith('linux'):
ale.setBool(b'sound', True)
ale.setBool(b'display_screen', True)
ale.loadROM(str.encode(str(game_path)))
assert ale.getFrameNumber() == 0
self.ale = ale
self.legal_actions = ale.getMinimalActionSet()
self.initialize()
self.action_space = spaces.Discrete(len(self.legal_actions))
one_screen_observation_space = spaces.Box(low=0,
high=255,
shape=(84, 84))
self.observation_space = spaces.Tuple([one_screen_observation_space] *
n_last_screens)
def initializeALE(romFile):
ale = ALEInterface()
ale.setInt("max_num_frames_per_episode", 18000)
ale.setInt("random_seed", 123)
ale.setFloat("repeat_action_probability", 0.0)
ale.setInt("frame_skip", 5)
random_seed = ale.getInt("random_seed")
print("random_seed: " + str(random_seed))
# Set USE_SDL to true to display the screen. ALE must be compilied
# with SDL enabled for this to work. On OSX, pygame init is used to
# proxy-call SDL_main.
USE_SDL = False
if USE_SDL:
if sys.platform == 'darwin':
import pygame
pygame.init()
ale.setBool('sound', False) # Sound doesn't work on OSX
elif sys.platform.startswith('linux'):
ale.setBool('sound', True)
ale.setBool('display_screen', True)
ale.loadROM(romFile)
actionSet = ale.getMinimalActionSet()
return ale, actionSet
def launch():
logging.basicConfig(level=logging.INFO)
myArgs = getParameters()
rom = myArgs.game
full_rom_path = os.path.join(myArgs.base_rom_path,rom)
rng = np.random.RandomState()
ale = ALEInterface()
ale.setInt('random_seed',38)
ale.setBool('display_screen',myArgs.display_screen)
ale.setInt('frame_skip',myArgs.frame_skip)
ale.setFloat('repeat_action_probability',myArgs.repeat_action_probability)
ale.loadROM(full_rom_path)
valid_actions = ale.getMinimalActionSet()
'''for episode in xrange(10):
total_reward = 0
while not ale.game_over():
from random import randrange
a = valid_actions[randrange(len(valid_actions))]
ale.act(a)
#print reward
#print ale.getScreenRGB()
#total_reward += reward
#print 'Episode', episode, 'ended with score:', total_reward
ale.reset_game()
'''
memory_pool = ReplayMemory(myArgs.memory_size,rng)
network_model = buildNetwork(myArgs.resized_height,myArgs.resized_width,myArgs.rmsp_epsilon,myArgs.rmsp_rho,myArgs.learning_rate,len(valid_actions))
ddqn = DDQN(network_model,valid_actions,myArgs.target_nn_update_frequency,myArgs.discount,myArgs.phi_len)
agent = Agent(myArgs,ddqn,memory_pool,valid_actions,rng)
train_agent = TrainMyAgent(myArgs,ale,agent,valid_actions,rng)
train_agent.run()
class ALE(object):
def __init__(self, init_seed, init_rand):
self.ale = ALEInterface()
self.ale.setInt(b'random_seed', init_seed)
self.ale.setFloat(b'repeat_action_probability', 0.0)
self.ale.loadROM('./breakout.bin')
self.action_size = 4
self.screen = None
self.reward = 0
self.terminal = True
self.init_rand = init_rand
def setSetting(self, action_repeat, screen_type):
self.action_repeat = action_repeat
self.screen_type = screen_type
def _step(self, action):
self.reward = self.ale.act(action)
self.terminal = self.ale.game_over()
if self.screen_type == 0:
self.screen = self.ale.getScreenRGB()
elif self.screen_type == 1:
self.screen = self.ale.getScreenGrayscale()
else:
sys.stderr.write('screen_type error!')
exit()
def state(self):
return self.reward, self.screen, self.terminal
def act(self, action):
cumulated_reward = 0
for _ in range(self.action_repeat):
self._step(action)
cumulated_reward += self.reward
if self.terminal:
break
self.reward = cumulated_reward
return self.state()
def new_game(self):
if self.ale.game_over():
self.ale.reset_game()
if self.screen_type == 0:
self.screen = self.ale.getScreenRGB()
elif self.screen_type == 1:
self.screen = self.ale.getScreenGrayscale()
else:
sys.stderr.write('screen_type error!')
exit()
for _ in range(self.init_rand):
self._step(0)
return self.screen
class ALEGame(object):
"""
Class linked to the Arcade Learning Environment
"""
def __init__(self, rand_seed, game_name):
self.ale = ALEInterface()
self.ale.setInt(b'random_seed', rand_seed)
self.ale.setFloat(b'repeat_action_probability', 0.0)
self.ale.setBool(b'color_averaging', True)
self.ale.setInt(b'frame_skip', SKIPED_FRAMES)
self.ale.loadROM(game_name.encode('ascii'))
self.real_actions = self.ale.getMinimalActionSet()
self.screen = np.empty((IMAGE_HEIGHT, IMAGE_WIDTH, 1), dtype=np.uint8)
self.reset()
def preprocess_image(self, is_to_reshape=False):
"""
Get image from the game and reshape it
"""
self.ale.getScreenGrayscale(self.screen)
reshaped_screen = np.reshape(self.screen, (IMAGE_HEIGHT, IMAGE_WIDTH))
x_t = skimage.transform.resize(reshaped_screen, (110, 84),
preserve_range=True)
x_t = x_t[18:102, :]
if is_to_reshape:
x_t = np.reshape(x_t, (84, 84, 1))
x_t = x_t.astype(np.float32)
x_t *= (1.0 / 255.0)
return x_t
def reset(self):
"""
Resets the game and create the first state
"""
self.ale.reset_game()
self.act(0)
x_t = self.preprocess_image()
self.s_t = np.stack((x_t, x_t, x_t, x_t), axis=2)
def act(self, action):
self.reward = self.ale.act(action)
self.is_game_over = self.ale.game_over()
def process_to_next_image(self, action):
"""
Acts and get new state
"""
real_action = self.real_actions[action]
self.act(real_action)
x_t1 = self.preprocess_image(True)
self.s_t1 = np.append(self.s_t[:, :, 1:], x_t1, axis=2)
def update(self):
self.s_t = self.s_t1
class Env():
def __init__(self, rom_name):
self.__initALE()
self.__loadROM(rom_name)
self.screen_history = []
self.screens = []
def __initALE(self):
self.ale = ALEInterface()
self.ale.setInt(b'random_seed', randrange(1000))
self.ale.setInt(b'fragsize', 64)
self.ale.setInt(b'frame_skip', 1)
# qq set this back to 0.25?
self.ale.setFloat(b'repeat_action_probability', 0)
self.ale.setLoggerMode('error')
def __loadROM(self, rom_name):
self.ale.loadROM(rom_name.encode('utf-8'))
self.actions = self.ale.getMinimalActionSet()
(width, height) = self.ale.getScreenDims()
self.screen_data1 = np.empty((height, width, 3), dtype=np.uint8)
self.screen_data2 = np.empty((height, width, 3), dtype=np.uint8)
def get_legal_action_count(self):
return len(self.actions)
def act(self, action_index):
action = self.actions[action_index]
reward = 0
# perform the action 4 times
reward += _clip(self.ale.act(action), -1, 1)
reward += _clip(self.ale.act(action), -1, 1)
reward += _clip(self.ale.act(action), -1, 1)
self.ale.getScreenRGB(self.screen_data1)
reward += _clip(self.ale.act(action), -1, 1)
self.ale.getScreenRGB(self.screen_data2)
# return the pixel-wise max of the last two frames (some games only
# render every other frame)
screen_data_combined = np.maximum(self.screen_data1, self.screen_data2)
terminal = self.ale.game_over()
self.screens.append(preprocess_screen(screen_data_combined))
phi = get_phi(self.screens)
return (terminal, reward, phi, self.screen_data2)
def get_s(self):
return get_phi(self.screens)
def reset(self):
self.ale.reset_game()
self.screens = []
class Emulator:
def __init__(self):
self.ale = ALEInterface()
# turn off the sound
self.ale.setBool('sound', False)
self.ale.setBool('display_screen', EMULATOR_DISPLAY)
self.ale.setInt('frame_skip', FRAME_SKIP)
self.ale.setFloat('repeat_action_probability', REPEAT_ACTION_PROBABILITY)
self.ale.setBool('color_averaging', COLOR_AVERAGING)
self.ale.setInt('random_seed', RANDOM_SEED)
if RECORD_SCENE_PATH:
self.ale.setString('record_screen_dir', RECORD_SCENE_PATH)
self.ale.loadROM(ROM_PATH)
self.actions = self.ale.getMinimalActionSet()
logger.info("Actions: " + str(self.actions))
self.dims = DIMS
#self.start_lives = self.ale.lives()
def getActions(self):
return self.actions
def numActions(self):
return len(self.actions)
def restart(self):
self.ale.reset_game()
# can be omitted
def act(self, action):
reward = self.ale.act(self.actions[action])
return reward
def getScreen(self):
# why grayscale ?
screen = self.ale.getScreenGrayscale()
resized = cv2.resize(screen, self.dims)
# normalize
#resized /= COLOR_SCALE
return resized
def isTerminal(self):
# while training deepmind only ends when agent dies
#terminate = DEATH_END and TRAIN and (self.ale.lives() < self.start_lives)
return self.ale.game_over()
class AtariEnvironment:
def __init__(self, rom):
self.ale = ALEInterface()
self.ale.setFloat(b'repeat_action_probability', 0.0)
self.ale.loadROM(rom_file=rom)
self.action_space = self.ale.getMinimalActionSet()
self.obs = self.reset()
try:
self.im = Image.fromarray(self.obs)
self.root = Tk()
self.tkim = ImageTk.PhotoImage(self.im)
self.window = Label(image=self.tkim)
self.window.image = self.tkim
self.window.pack()
except AttributeError:
print("Cannot create rendering attributes")
def step(self, action):
reward = 0.
# Use if you want environment to provide every 4th frame and repeat action in between
for i in range(4):
reward += float(self.ale.act(self.action_space[action]))
if i == 2:
frame1 = self.ale.getScreenGrayscale()
if i == 3:
frame2 = self.ale.getScreenGrayscale()
self.obs = np.squeeze(np.maximum(frame1, frame2))
# Use if you want to receive every frame from environment
# reward += float(self.ale.act(self.action_space[action]))
# self.obs = np.squeeze(self.ale.getScreenGrayscale())
done = self.ale.game_over()
return self.obs, reward, done
def reset(self):
self.ale.reset_game()
self.obs = np.squeeze(self.ale.getScreenGrayscale())
return self.obs
def render(self, rate=0.1):
self.im = Image.fromarray(self.obs)
self.tkim = ImageTk.PhotoImage(self.im)
self.window.configure(image=self.tkim)
self.window.image = self.tkim
self.window.update_idletasks()
self.window.update()
time.sleep(rate)
def sample_action(self):
action = random.choice([0, 1, 2, 3])
return action
class Atari(AtariEnv):
metadata = {'render.modes': ['human', 'rgb_array']}
def __init__(self,
game='pong',
obs_type='ram',
frameskip=(2, 5),
repeat_action_probability=0.):
"""Frameskip should be either a tuple (indicating a random range to
choose from, with the top value exclude), or an int."""
utils.EzPickle.__init__(self, game, obs_type)
assert obs_type in ('ram', 'image')
self.game_path = atari_py.get_game_path(game)
if not os.path.exists(self.game_path):
raise IOError('You asked for game %s but path %s does not exist' %
(game, self.game_path))
self._obs_type = obs_type
self.frameskip = frameskip
self.ale = ALEInterface()
self.viewer = None
# Tune (or disable) ALE's action repeat:
# https://github.com/openai/gym/issues/349
assert isinstance(
repeat_action_probability,
(float, int)), "Invalid repeat_action_probability: {!r}".format(
repeat_action_probability)
self.ale.setFloat('repeat_action_probability'.encode('utf-8'),
repeat_action_probability)
self._seed()
(screen_width, screen_height) = self.ale.getScreenDims()
self._buffer = np.empty((screen_height, screen_width, 3),
dtype=np.uint8)
self._action_set = self.ale.getMinimalActionSet()
self.action_space = spaces.Discrete(len(self._action_set))
(screen_width, screen_height) = self.ale.getScreenDims()
if self._obs_type == 'ram':
self.observation_space = spaces.Box(low=np.zeros(128),
high=np.zeros(128) + 255)
elif self._obs_type == 'image':
self.observation_space = spaces.Box(low=0,
high=255,
shape=(screen_height,
screen_width, 3))
else:
raise error.Error('Unrecognized observation type: {}'.format(
self._obs_type))
def _get_image(self):
return self.ale.getScreenRGB(self._buffer).copy()
class Emulator:
def __init__(self):
self.ale = ALEInterface()
# turn off the sound
self.ale.setBool('sound', False)
self.ale.setBool('display_screen', EMULATOR_DISPLAY)
self.ale.setInt('frame_skip', FRAME_SKIP)
self.ale.setFloat('repeat_action_probability',
REPEAT_ACTION_PROBABILITY)
self.ale.setBool('color_averaging', COLOR_AVERAGING)
self.ale.setInt('random_seed', RANDOM_SEED)
if RECORD_SCENE_PATH:
self.ale.setString('record_screen_dir', RECORD_SCENE_PATH)
self.ale.loadROM(ROM_PATH)
self.actions = self.ale.getMinimalActionSet()
logger.info("Actions: " + str(self.actions))
self.dims = DIMS
#self.start_lives = self.ale.lives()
def getActions(self):
return self.actions
def numActions(self):
return len(self.actions)
def restart(self):
self.ale.reset_game()
# can be omitted
def act(self, action):
reward = self.ale.act(self.actions[action])
return reward
def getScreen(self):
# why grayscale ?
screen = self.ale.getScreenGrayscale()
resized = cv2.resize(screen, self.dims)
# normalize
#resized /= COLOR_SCALE
return resized
def isTerminal(self):
# while training deepmind only ends when agent dies
#terminate = DEATH_END and TRAIN and (self.ale.lives() < self.start_lives)
return self.ale.game_over()
def init():
pygame.init()
rom_path = '/Users/maciej/Development/atari-roms'
ale = ALEInterface()
ale.setInt('random_seed', 123)
ale.setBool('frame_skip', 1)
ale.loadROM(rom_path + '/space_invaders.bin')
ale.setFloat("repeat_action_probability", 0)
return ale
def _init_ale(rand_seed, rom_file):
assert os.path.exists(rom_file), '%s does not exists.'
ale = ALEInterface()
ale.setInt('random_seed', rand_seed)
ale.setBool('showinfo', False)
ale.setInt('frame_skip', 1)
ale.setFloat('repeat_action_probability', 0.0)
ale.setBool('color_averaging', False)
ale.loadROM(rom_file)
return ale
def _init_ale(rand_seed, rom_file):
assert os.path.exists(rom_file), '%s does not exists.'
ale = ALEInterface()
ale.setInt('random_seed', rand_seed)
ale.setBool('showinfo', False)
ale.setInt('frame_skip', 1)
ale.setFloat('repeat_action_probability', 0.0)
ale.setBool('color_averaging', False)
ale.loadROM(rom_file)
return ale
def init():
pygame.init()
rom_path = '/Users/maciej/Development/atari-roms'
ale = ALEInterface()
ale.setInt('random_seed', 123)
ale.setBool('frame_skip', 1)
ale.loadROM(rom_path + '/space_invaders.bin')
ale.setFloat("repeat_action_probability", 0)
return ale
class Environment:
def __init__(self, render=False):
self.ale = ALEInterface()
self.ale.setInt(b'random_seed', 0)
self.ale.setFloat(b'repeat_action_probability', 0.0)
self.ale.setBool(b'color_averaging', True)
self.ale.setInt(b'frame_skip', 4)
self.ale.setBool(b'display_screen', render)
self.ale.loadROM(ENV.encode('ascii'))
self._screen = np.empty((210, 160, 1), dtype=np.uint8)
self._no_op_max = 7
def set_render(self, render):
if not render:
self.ale.setBool(b'display_screen', render)
def reset(self):
self.ale.reset_game()
# randomize initial state
if self._no_op_max > 0:
no_op = np.random.randint(0, self._no_op_max + 1)
for _ in range(no_op):
self.ale.act(0)
self.ale.getScreenGrayscale(self._screen)
screen = np.reshape(self._screen, (210, 160))
screen = cv2.resize(screen, (84, 110))
screen = screen[18:102, :]
screen = screen.astype(np.float32)
screen /= 255.0
self.frame_buffer = np.stack((screen, screen, screen, screen), axis=2)
return self.frame_buffer
def act(self, action):
reward = self.ale.act(4 + action)
done = self.ale.game_over()
self.ale.getScreenGrayscale(self._screen)
screen = np.reshape(self._screen, (210, 160))
screen = cv2.resize(screen, (84, 110))
screen = np.reshape(screen[18:102, :], (84, 84, 1))
screen = screen.astype(np.float32)
screen *= (1 / 255.0)
self.frame_buffer = np.append(self.frame_buffer[:, :, 1:],
screen,
axis=2)
return self.frame_buffer, reward, done, ""
def close(self):
self.ale.setBool(b'display_screen', False)
def init(game, display_screen=False, record_dir=None):
if display_screen:
import pygame
pygame.init()
ale = ALEInterface()
ale.setBool('display_screen', display_screen)
ale.setInt('random_seed', 123)
if record_dir is not None:
ale.setString("record_screen_dir", record_dir)
ale.loadROM('{game}.bin'.format(game=game))
ale.setFloat("repeat_action_probability", 0)
return ale
def init(display_screen=False):
if display_screen:
import pygame
pygame.init()
rom_path = '.'
ale = ALEInterface()
ale.setBool('display_screen', display_screen)
ale.setInt('random_seed', 123)
ale.setBool('frame_skip', 1)
ale.loadROM(rom_path + '/space_invaders.bin')
ale.setFloat("repeat_action_probability", 0)
return ale
def init(game, display_screen=False, record_dir=None):
if display_screen:
import pygame
pygame.init()
ale = ALEInterface()
ale.setBool('display_screen', display_screen)
ale.setInt('random_seed', 123)
if record_dir is not None:
ale.setString("record_screen_dir", record_dir)
ale.loadROM('{game}.bin'.format(game=game))
ale.setFloat("repeat_action_probability", 0)
return ale
class ALEInterfaceWrapper:
def __init__(self, repeat_action_probability, rng):
self.internal_action_repeat_prob = repeat_action_probability
self.prev_action = 0
self.rng_source = rng
self.rng = deepcopy(self.rng_source)
self.ale = ALEInterface()
'''
This sets the probability from the default 0.25 to 0.
It ensures deterministic actions.
'''
self.ale.setFloat('repeat_action_probability', 0.0)
def getScreenRGB(self):
return self.ale.getScreenRGB()
def game_over(self):
return self.ale.game_over()
def reset_game(self):
self.ale.reset_game()
def lives(self):
return self.ale.lives()
def getMinimalActionSet(self):
return self.ale.getMinimalActionSet()
def setInt(self, key, value):
self.ale.setInt(key, value)
def setFloat(self, key, value):
self.ale.setFloat(key, value)
def loadROM(self, rom):
self.ale.loadROM(rom)
def reset_action_seed(self):
self.rng = deepcopy(self.rng_source)
def set_action_seed(self, seed):
self.rng = np.random.RandomState(seed)
def act(self, action):
actual_action = action
if self.internal_action_repeat_prob > 0:
if self.rng.uniform(0, 1) < self.internal_action_repeat_prob:
actual_action = self.prev_action
self.prev_action = actual_action
return self.ale.act(actual_action)
def init(display_screen=False, record_dir=None):
if display_screen:
import pygame
pygame.init()
rom_path = '.'
ale = ALEInterface()
ale.setBool('display_screen', display_screen)
ale.setInt('random_seed', 123)
if record_dir is not None:
ale.setString("record_screen_dir", record_dir)
ale.loadROM(rom_path + '/space_invaders.bin')
ale.setFloat("repeat_action_probability", 0)
return ale
def init(display_screen=False, record_dir=None):
if display_screen:
import pygame
pygame.init()
rom_path = '.'
ale = ALEInterface()
ale.setBool('display_screen', display_screen)
ale.setInt('random_seed', 123)
if record_dir is not None:
ale.setString("record_screen_dir", record_dir)
ale.loadROM(rom_path + '/space_invaders.bin')
ale.setFloat("repeat_action_probability", 0)
return ale
class AleInterface(object):
def __init__(self, game, args):
self.game = game
self.ale = ALEInterface()
# if sys.platform == 'darwin':
# self.ale.setBool('sound', False) # Sound doesn't work on OSX
# elif sys.platform.startswith('linux'):
# self.ale.setBool('sound', True)
# self.ale.setBool('display_screen', True)
#
self.ale.setBool('display_screen', args.display_screen)
self.ale.setInt('frame_skip', args.frame_skip)
self.ale.setFloat('repeat_action_probability', args.repeat_action_probability)
self.ale.setBool('color_averaging', args.color_averaging)
self.ale.setInt('random_seed', args.random_seed)
#
# if rand_seed is not None:
# self.ale.setInt('random_seed', rand_seed)
rom_file = "./roms/%s.bin" % game
if not os.path.exists(rom_file):
print "not found rom file:", rom_file
sys.exit(-1)
self.ale.loadROM(rom_file)
self.actions = self.ale.getMinimalActionSet()
def get_actions_num(self):
return len(self.actions)
def act(self, action):
reward = self.ale.act(self.actions[action])
return reward
def get_screen_gray(self):
return self.ale.getScreenGrayscale()
def get_screen_rgb(self):
return self.ale.getScreenRGB()
def game_over(self):
return self.ale.game_over()
def reset_game(self):
return self.ale.reset_game()
def __init__(self,
rom_path,
n_last_screens=4,
frame_skip=4,
treat_life_lost_as_terminal=True,
crop_or_scale='scale',
max_start_nullops=30,
record_screen_dir=None,
render=False,
max_episode_length=None,
max_time=None):
self.frame_skip = frame_skip
self.n_last_screens = n_last_screens
self.treat_life_lost_as_terminal = treat_life_lost_as_terminal
self.crop_or_scale = crop_or_scale
self.max_start_nullops = max_start_nullops
self.max_episode_length = max_episode_length
self.max_time = max_time
ale = ALEInterface()
# Use numpy's random state
seed = np.random.randint(0, 2**16)
ale.setInt(b'random_seed', seed)
ale.setFloat(b'repeat_action_probability', 0.0)
ale.setBool(b'color_averaging', False)
if record_screen_dir is not None:
ale.setString(b'record_screen_dir', str.encode(record_screen_dir))
if render:
if sys.platform == 'darwin':
import pygame
pygame.init()
ale.setBool(b'sound', False) # Sound doesn't work on OSX
elif sys.platform.startswith('linux'):
ale.setBool(b'sound', True)
ale.setBool(b'display_screen', True)
ale.loadROM(str.encode(rom_path))
self.ale = ale
self.__exceed_max = False
self.legal_actions = ale.getMinimalActionSet()
self.reset()
def __init__(self, rom_filename, seed=None, use_sdl=False, n_last_screens=4,
frame_skip=4, treat_life_lost_as_terminal=True,
crop_or_scale='scale', max_start_nullops=30,
record_screen_dir=None):
self.n_last_screens = n_last_screens
self.treat_life_lost_as_terminal = treat_life_lost_as_terminal
self.crop_or_scale = crop_or_scale
self.max_start_nullops = max_start_nullops
ale = ALEInterface()
if seed is not None:
assert seed >= 0 and seed < 2 ** 16, \
"ALE's random seed must be represented by unsigned int"
else:
# Use numpy's random state
seed = np.random.randint(0, 2 ** 16)
ale.setInt(b'random_seed', seed)
ale.setFloat(b'repeat_action_probability', 0.0)
ale.setBool(b'color_averaging', False)
if record_screen_dir is not None:
ale.setString(b'record_screen_dir', str.encode(record_screen_dir))
self.frame_skip = frame_skip
if use_sdl:
if 'DISPLAY' not in os.environ:
raise RuntimeError(
'Please set DISPLAY environment variable for use_sdl=True')
# SDL settings below are from the ALE python example
if sys.platform == 'darwin':
import pygame
pygame.init()
ale.setBool(b'sound', False) # Sound doesn't work on OSX
elif sys.platform.startswith('linux'):
ale.setBool(b'sound', True)
ale.setBool(b'display_screen', True)
ale.loadROM(str.encode(rom_filename))
assert ale.getFrameNumber() == 0
self.ale = ale
self.legal_actions = ale.getMinimalActionSet()
self.initialize()
class ALEInterfaceWrapper:
def __init__(self, repeat_action_probability):
self.internal_action_repeat_prob = repeat_action_probability
self.prev_action = 0
self.ale = ALEInterface()
'''
This sets the probability from the default 0.25 to 0.
It ensures deterministic actions.
'''
self.ale.setFloat('repeat_action_probability',
repeat_action_probability)
def getScreenRGB(self):
return self.ale.getScreenRGB()
def game_over(self):
return self.ale.game_over()
def reset_game(self):
self.ale.reset_game()
def lives(self):
return self.ale.lives()
def getMinimalActionSet(self):
return self.ale.getMinimalActionSet()
def setInt(self, key, value):
self.ale.setInt(key, value)
def setFloat(self, key, value):
self.ale.setFloat(key, value)
def loadROM(self, rom):
self.ale.loadROM(rom)
def act(self, action):
actual_action = action
return self.ale.act(actual_action)
def _init_ale(self):
ale = ALEInterface()
ale.setBool('sound', self.play_sound)
ale.setBool('display_screen', self.display_screen)
ale.setInt('random_seed', self.random_seed)
# Frame skip is implemented separately
ale.setInt('frame_skip', 1)
ale.setBool('color_averaging', False)
ale.setFloat('repeat_action_probability', 0.0)
# Somehow this repeat_action_probability has unexpected effect on game.
# The larger this value is, the more frames games take to restart.
# And when 1.0 games completely hang
# We are setting the default value of 0.0 here, expecting that
# it has no effect as frame_skip == 1
# This action repeating is agent's concern
# so we do not implement an equivalent in our wrapper.
if self.record_screen_path:
_LG.info('Recording screens: %s', self.record_screen_path)
if not os.path.exists(self.record_screen_path):
os.makedirs(self.record_screen_path)
ale.setString('record_screen_dir', self.record_screen_path)
if self.record_sound_filename:
_LG.info('Recording sound: %s', self.record_sound_filename)
record_sound_dir = os.path.dirname(self.record_sound_filename)
if not os.path.exists(record_sound_dir):
os.makedirs(record_sound_dir)
ale.setBool('sound', True)
ale.setString('record_sound_filename', self.record_sound_filename)
ale.loadROM(self.rom_path)
self._ale = ale
self._actions = (ale.getMinimalActionSet() if self.minimal_action_set
else ale.getLegalActionSet())
def ale_load_from_rom(rom_path, display_screen):
rng = get_numpy_rng()
try:
from ale_python_interface import ALEInterface
except ImportError as e:
raise ImportError('Unable to import the python package of Arcade Learning Environment. ' \
'ALE may not have been installed correctly. Refer to ' \
'`https://github.com/mgbellemare/Arcade-Learning-Environment` for some' \
'installation guidance')
ale = ALEInterface()
ale.setInt(b'random_seed', rng.randint(1000))
if display_screen:
import sys
if sys.platform == 'darwin':
import pygame
pygame.init()
ale.setBool(b'sound', False) # Sound doesn't work on OSX
ale.setBool(b'display_screen', True)
else:
ale.setBool(b'display_screen', False)
ale.setFloat(b'repeat_action_probability', 0)
ale.loadROM(str.encode(rom_path))
return ale
def ale_load_from_rom(rom_path, display_screen):
rng = get_numpy_rng()
try:
from ale_python_interface import ALEInterface
except ImportError as e:
raise ImportError('Unable to import the python package of Arcade Learning Environment. ' \
'ALE may not have been installed correctly. Refer to ' \
'`https://github.com/mgbellemare/Arcade-Learning-Environment` for some' \
'installation guidance')
ale = ALEInterface()
ale.setInt('random_seed', rng.randint(1000))
if display_screen:
import sys
if sys.platform == 'darwin':
import pygame
pygame.init()
ale.setBool('sound', False) # Sound doesn't work on OSX
ale.setBool('display_screen', True)
else:
ale.setBool('display_screen', False)
ale.setFloat('repeat_action_probability', 0)
ale.loadROM(rom_path)
return ale
class AtariEnvironment:
num_actions = 18 # Use full action set
def __init__(self, frame_shape, frame_postprocess=lambda x: x):
self.ale = ALEInterface()
self.ale.setBool(b"display_screen", cfg.display_screen)
self.ale.setInt(b"frame_skip", 1)
self.ale.setBool(b"color_averaging", False)
self.ale.setInt(b"random_seed", cfg.random_seed)
self.ale.setFloat(b"repeat_action_probability", cfg.sticky_prob)
self.ale.loadROM(str.encode(cfg.rom))
self.ale.setMode(cfg.mode)
self.ale.setDifficulty(cfg.difficulty)
self.action_set = self.ale.getLegalActionSet()
assert len(self.action_set) == AtariEnvironment.num_actions
screen_dims = tuple(reversed(self.ale.getScreenDims())) + (1,)
self._frame_buffer = CircularBuffer(
cfg.frame_buffer_size, screen_dims, np.uint8
)
self._frame_stack = CircularBuffer(
cfg.frame_history_size, frame_shape, np.uint8
)
self._frame_postprocess = frame_postprocess
self._episode_count = 0
self.reset(inc_episode_count=False)
def _is_terminal(self):
return self.ale.game_over()
def _get_single_frame(self):
stacked_frames = np.concatenate(self._frame_buffer, axis=2)
maxed_frame = np.amax(stacked_frames, axis=2)
expanded_frame = np.expand_dims(maxed_frame, 3)
frame = self._frame_postprocess(expanded_frame)
return frame
def reset(self, inc_episode_count=True):
self._episode_frames = 0
self._episode_reward = 0
if inc_episode_count:
self._episode_count += 1
self.ale.reset_game()
for _ in range(cfg.frame_buffer_size):
self._frame_buffer.append(self.ale.getScreenGrayscale())
for _ in range(cfg.frame_history_size):
self._frame_stack.append(self._get_single_frame())
def act(self, action):
assert not self._is_terminal()
cum_reward = 0
for _ in range(cfg.frame_skip):
cum_reward += self.ale.act(self.action_set[action])
self._frame_buffer.append(self.ale.getScreenGrayscale())
self._frame_stack.append(self._get_single_frame())
self._episode_frames += cfg.frame_skip
self._episode_reward += cum_reward
cum_reward = np.clip(cum_reward, -1, 1)
return cum_reward, self.state, self._is_terminal()
@property
def state(self):
assert len(self._frame_buffer) == cfg.frame_buffer_size
assert len(self._frame_stack) == cfg.frame_history_size
return np.concatenate(self._frame_stack, axis=-1)
@property
def episode_reward(self):
return self._episode_reward
@property
def episode_frames(self):
return self._episode_frames
@property
def episode_steps(self):
return self._episode_frames // cfg.frame_skip
@property
def episode_count(self):
return self._episode_count
class AtariAleEnvironment(object):
def __init__(self, env_name, display=False, no_op_max=7):
self.ale = ALEInterface()
self.ale.setInt(b'random_seed', 113 * np.random.randint(0, 5))
self.ale.setFloat(b'repeat_action_probability', 0.0)
self.ale.setBool(b'color_averaging', True)
self.ale.setInt(b'frame_skip', 4)
self._no_op_max = no_op_max
if display:
self._setup_display()
rom_name = env_name + '.bin'
self.ale.loadROM(rom_name.encode('ascii'))
# collect minimal action set
self.real_actions = self.ale.getMinimalActionSet()
# height=210, width=160
self._screen = np.empty((210, 160, 1), dtype=np.uint8)
def _process_frame(self, action, reshape):
reward = self.ale.act(action)
terminal = self.ale.game_over()
# screen shape is (210, 160, 1)
self.ale.getScreenGrayscale(self._screen)
# reshape it into (210, 160)
reshaped_screen = np.reshape(self._screen, (210, 160))
# resize to height=110, width=84
resized_screen = cv2.resize(reshaped_screen, (84, 84))
#x_t = resized_screen[18:102,:]
x_t = resized_screen
if reshape:
x_t = np.reshape(x_t, (84, 84, 1))
x_t = x_t.astype(np.float32)
x_t *= (1.0 / 255.0)
return reward, terminal, x_t
def _setup_display(self):
if sys.platform == 'darwin':
import pygame
pygame.init()
self.ale.setBool(b'sound', False)
elif sys.platform.startswith('linux'):
self.ale.setBool(b'sound', True)
self.ale.setBool(b'display_screen', True)
def reset(self):
self.ale.reset_game()
# randomize initial state
if self._no_op_max > 0:
no_op = np.random.randint(0, self._no_op_max + 1)
for _ in range(no_op):
self.ale.act(0)
_, _, x_t = self._process_frame(0, False)
self.reward = 0
self.terminal = False
self.s_t = np.stack((x_t, x_t, x_t, x_t), axis=2)
return self.s_t
def step(self, action):
# convert original 18 action index to minimal action set index
real_action = self.real_actions[action]
r, t, x_t1 = self._process_frame(real_action, True)
self.reward = r
self.terminal = t
s_t1 = np.append(self.s_t[:, :, 1:], x_t1, axis=2)
self.s_t = s_t1
# 4th argument is some info from gym; consistency hack
return self.s_t, self.reward, self.terminal, None
class AtariEmulator:
def __init__(self, args):
''' Initialize Atari environment '''
# Parameters
self.buffer_length = args.buffer_length
self.screen_dims = args.screen_dims
self.frame_skip = args.frame_skip
self.blend_method = args.blend_method
self.reward_processing = args.reward_processing
self.max_start_wait = args.max_start_wait
self.history_length = args.history_length
self.start_frames_needed = self.buffer_length - 1 + ((args.history_length - 1) * self.frame_skip)
#Initialize ALE instance
self.ale = ALEInterface()
self.ale.setFloat(b'repeat_action_probability', 0.0)
if args.watch:
self.ale.setBool(b'sound', True)
self.ale.setBool(b'display_screen', True)
self.ale.loadROM(str.encode(args.rom_path + '/' + args.game + '.bin'))
self.buffer = np.empty((self.buffer_length, 210, 160))
self.current = 0
self.action_set = self.ale.getMinimalActionSet()
self.lives = self.ale.lives()
self.reset()
def get_possible_actions(self):
''' Return list of possible actions for game '''
return self.action_set
def get_screen(self):
''' Add screen to frame buffer '''
self.buffer[self.current] = np.squeeze(self.ale.getScreenGrayscale())
self.current = (self.current + 1) % self.buffer_length
def reset(self):
self.ale.reset_game()
self.lives = self.ale.lives()
if self.max_start_wait < 0:
print("ERROR: max start wait decreased beyond 0")
sys.exit()
elif self.max_start_wait <= self.start_frames_needed:
wait = 0
else:
wait = random.randint(0, self.max_start_wait - self.start_frames_needed)
for _ in range(wait):
self.ale.act(self.action_set[0])
# Fill frame buffer
self.get_screen()
for _ in range(self.buffer_length - 1):
self.ale.act(self.action_set[0])
self.get_screen()
# get initial_states
state = [(self.preprocess(), 0, 0, False)]
for step in range(self.history_length - 1):
state.append(self.run_step(0))
# make sure agent hasn't died yet
if self.isTerminal():
print("Agent lost during start wait. Decreasing max_start_wait by 1")
self.max_start_wait -= 1
return self.reset()
return state
def run_step(self, action):
''' Apply action to game and return next screen and reward '''
raw_reward = 0
for step in range(self.frame_skip):
raw_reward += self.ale.act(self.action_set[action])
self.get_screen()
reward = None
if self.reward_processing == 'clip':
reward = np.clip(raw_reward, -1, 1)
else:
reward = raw_reward
terminal = self.isTerminal()
self.lives = self.ale.lives()
return (self.preprocess(), action, reward, terminal, raw_reward)
def preprocess(self):
''' Preprocess frame for agent '''
img = None
if self.blend_method == "max":
img = np.amax(self.buffer, axis=0)
return cv2.resize(img, self.screen_dims, interpolation=cv2.INTER_LINEAR)
def isTerminal(self):
return (self.isGameOver() or (self.lives > self.ale.lives()))
def isGameOver(self):
return self.ale.game_over()
class AtariEmulator(BaseEnvironment):
def __init__(self,
rom_addr,
random_start=False,
random_seed=6,
visualize=True,
single_life=False):
self.ale = ALEInterface()
self.ale.setInt(b"random_seed", 2 * random_seed)
# For fuller control on explicit action repeat (>= ALE 0.5.0)
self.ale.setFloat(b"repeat_action_probability", 0.0)
# Disable frame_skip and color_averaging
# See: http://is.gd/tYzVpj
self.ale.setInt(b"frame_skip", 1)
self.ale.setBool(b"color_averaging", False)
full_rom_path = rom_addr
self.ale.loadROM(str.encode(full_rom_path))
self.legal_actions = self.ale.getMinimalActionSet()
self.screen_width, self.screen_height = self.ale.getScreenDims()
self.lives = self.ale.lives()
self.writer = imageio.get_writer('breakout0.gif', fps=30)
self.random_start = random_start
self.single_life_episodes = single_life
self.call_on_new_frame = visualize
# Processed historcal frames that will be fed in to the network
# (i.e., four 84x84 images)
self.observation_pool = ObservationPool(
np.zeros((84, 84, 4), dtype=np.uint8))
self.rgb_screen = np.zeros((self.screen_height, self.screen_width, 3),
dtype=np.uint8)
self.gray_screen = np.zeros((self.screen_height, self.screen_width, 1),
dtype=np.uint8)
self.frame_pool = FramePool(
np.empty((2, self.screen_height, self.screen_width),
dtype=np.uint8), self.__process_frame_pool)
def get_legal_actions(self):
return self.legal_actions
def __get_screen_image(self):
"""
Get the current frame luminance
:return: the current frame
"""
self.ale.getScreenGrayscale(self.gray_screen)
if self.call_on_new_frame:
self.ale.getScreenRGB(self.rgb_screen)
self.on_new_frame(self.rgb_screen)
return np.squeeze(self.gray_screen)
def on_new_frame(self, frame):
pass
def __new_game(self):
""" Restart game """
self.ale.reset_game()
self.lives = self.ale.lives()
if self.random_start:
wait = random.randint(0, MAX_START_WAIT)
for _ in range(wait):
self.ale.act(self.legal_actions[0])
def __process_frame_pool(self, frame_pool):
""" Preprocess frame pool """
img = np.amax(frame_pool, axis=0)
img = imresize(img, (84, 84), interp='nearest')
img = img.astype(np.uint8)
return img
def __action_repeat(self, a, times=ACTION_REPEAT):
""" Repeat action and grab screen into frame pool """
reward = 0
for i in range(times - FRAMES_IN_POOL):
reward += self.ale.act(self.legal_actions[a])
# Only need to add the last FRAMES_IN_POOL frames to the frame pool
for i in range(FRAMES_IN_POOL):
reward += self.ale.act(self.legal_actions[a])
self.frame_pool.new_frame(self.__get_screen_image())
return reward
def get_initial_state(self):
""" Get the initial state """
self.__new_game()
for step in range(4):
_ = self.__action_repeat(0)
self.observation_pool.new_observation(
self.frame_pool.get_processed_frame())
if self.__is_terminal():
raise Exception('This should never happen.')
return self.observation_pool.get_pooled_observations()
def next(self, action):
""" Get the next state, reward, and game over signal """
reward = self.__action_repeat(np.argmax(action))
self.observation_pool.new_observation(
self.frame_pool.get_processed_frame())
terminal = self.__is_terminal()
self.lives = self.ale.lives()
observation = self.observation_pool.get_pooled_observations()
return observation, reward, terminal
def __is_terminal(self):
if self.single_life_episodes:
return self.__is_over() or (self.lives > self.ale.lives())
else:
return self.__is_over()
def __is_over(self):
return self.ale.game_over()
def get_noop(self):
return [1.0, 0.0]
class Environment:
"""docstring for Environment"""
BUFFER_LEN = 2
EPISODE_FRAMES = 18000
EPOCH_COUNT = 200
EPOCH_STEPS = 250000
EVAL_EPS = 0.001
FRAMES_SKIP = 4
FRAME_HEIGHT = 84
FRAME_WIDTH = 84
MAX_NO_OP = 30
MAX_REWARD = 1
def __init__(self, rom_name, rng, display_screen = False):
self.api = ALEInterface()
self.api.setInt('random_seed', rng.randint(333))
self.api.setBool('display_screen', display_screen)
self.api.setFloat('repeat_action_probability', 0.0)
self.rom_name = rom_name
self.display_screen = display_screen
self.rng = rng
self.repeat = Environment.FRAMES_SKIP
self.buffer_len = Environment.BUFFER_LEN
self.height = Environment.FRAME_HEIGHT
self.width = Environment.FRAME_WIDTH
self.episode_steps = Environment.EPISODE_FRAMES / Environment.FRAMES_SKIP
self.merge_id = 0
self.max_reward = Environment.MAX_REWARD
self.eval_eps = Environment.EVAL_EPS
self.log_dir = ''
self.network_dir = ''
self.api.loadROM('../rom/' + self.rom_name)
self.minimal_actions = self.api.getMinimalActionSet()
original_width, original_height = self.api.getScreenDims()
self.merge_frame = np.zeros((self.buffer_len
, original_height
, original_width)
, dtype = np.uint8)
def get_action_count(self):
return len(self.minimal_actions)
def train(self, agent, store_freq, folder = None, start_epoch = 0):
self._open_log_files(agent, folder)
obs = np.zeros((self.height, self.width), dtype = np.uint8)
epoch_count = Environment.EPOCH_COUNT
for epoch in xrange(start_epoch, epoch_count):
self.need_reset = True
steps_left = Environment.EPOCH_STEPS
print "\n" + "=" * 50
print "Epoch #%d" % (epoch + 1)
episode = 0
train_start = time.time()
while steps_left > 0:
num_step, _ = self._run_episode(agent, steps_left, obs)
steps_left -= num_step
episode += 1
if steps_left == 0 or episode % 10 == 0:
print "Finished episode #%d, steps_left = %d" \
% (episode, steps_left)
train_end = time.time()
valid_values = agent.get_validate_values()
eval_values = self.evaluate(agent)
test_end = time.time()
train_time = train_end - train_start
test_time = test_end - train_end
step_per_sec = Environment.EPOCH_STEPS * 1. / max(1, train_time)
print "\tFinished epoch #%d, episode trained = %d\n" \
"\tValidate values = %.3f, evaluate reward = %.3f\n"\
"\tTrain time = %.0fs, test time = %.0fs, steps/sec = %.4f" \
% (epoch + 1, episode, valid_values, eval_values\
, train_time, test_time, step_per_sec)
self._update_log_files(agent, epoch + 1, episode
, valid_values, eval_values
, train_time, test_time
, step_per_sec, store_freq)
gc.collect()
def evaluate(self, agent, episodes = 30, obs = None):
print "\n***Start evaluating"
if obs is None:
obs = np.zeros((self.height, self.width), dtype = np.uint8)
sum_reward = 0.0
sum_step = 0.0
for episode in xrange(episodes):
self.need_reset = True
step, reward = self._run_episode(agent, self.episode_steps, obs
, self.eval_eps, evaluating = True)
sum_reward += reward
sum_step += step
print "Finished episode %d, reward = %d, step = %d" \
% (episode + 1, reward, step)
self.need_reset = True
print "Average reward per episode = %.4f" % (sum_reward / episodes)
print "Average step per episode = %.4f" % (sum_step / episodes)
return sum_reward / episodes
def _prepare_game(self):
if self.need_reset or self.api.game_over():
self.api.reset_game()
self.need_reset = False
if Environment.MAX_NO_OP > 0:
num_no_op = self.rng.randint(Environment.MAX_NO_OP + 1) \
+ self.buffer_len
for _ in xrange(num_no_op):
self.api.act(0)
for _ in xrange(self.buffer_len):
self._update_buffer()
def _run_episode(self, agent, steps_left, obs
, eps = 0.0, evaluating = False):
self._prepare_game()
start_lives = self.api.lives()
step_count = 0
sum_reward = 0
is_terminal = False
while step_count < steps_left and not is_terminal:
self._get_screen(obs)
action_id, _ = agent.get_action(obs, eps, evaluating)
reward = self._repeat_action(self.minimal_actions[action_id])
reward_clip = reward
if self.max_reward > 0:
reward_clip = np.clip(reward, -self.max_reward, self.max_reward)
life_lost = not evaluating and self.api.lives() < start_lives
is_terminal = self.api.game_over() or life_lost \
or step_count + 1 >= steps_left
agent.add_experience(obs, is_terminal, action_id, reward_clip
, evaluating)
sum_reward += reward
step_count += 1
return step_count, sum_reward
def _update_buffer(self):
self.api.getScreenGrayscale(self.merge_frame[self.merge_id, ...])
self.merge_id = (self.merge_id + 1) % self.buffer_len
def _repeat_action(self, action):
reward = 0
for i in xrange(self.repeat):
reward += self.api.act(action)
if i + self.buffer_len >= self.repeat:
self._update_buffer()
return reward
def _get_screen(self, resized_frame):
self._resize_frame(self.merge_frame.max(axis = 0), resized_frame)
def _resize_frame(self, src_frame, dst_frame):
cv2.resize(src = src_frame, dst = dst_frame,
dsize = (self.width, self.height),
interpolation = cv2.INTER_LINEAR)
def _open_log_files(self, agent, folder):
time_str = time.strftime("_%m-%d-%H-%M", time.localtime())
base_rom_name = os.path.splitext(os.path.basename(self.rom_name))[0]
if folder is not None:
self.log_dir = folder
self.network_dir = self.log_dir + '/network'
else:
self.log_dir = '../run_results/' + base_rom_name + time_str
self.network_dir = self.log_dir + '/network'
info_name = get_next_name(self.log_dir, 'info', 'txt')
git_name = get_next_name(self.log_dir, 'git-diff', '')
try:
os.stat(self.log_dir)
except OSError:
os.makedirs(self.log_dir)
try:
os.stat(self.network_dir)
except OSError:
os.makedirs(self.network_dir)
with open(os.path.join(self.log_dir, info_name), 'w') as f:
f.write('Commit: ' + subprocess.check_output(['git', 'rev-parse'
, 'HEAD']))
f.write('Run command: ')
f.write(' '.join(pipes.quote(x) for x in sys.argv))
f.write('\n\n')
f.write(agent.get_info())
write_info(f, Environment)
write_info(f, agent.__class__)
write_info(f, agent.network.__class__)
# From https://github.com/spragunr/deep_q_rl/pull/49/files
with open(os.path.join(self.log_dir, git_name), 'w') as f:
f.write(subprocess.check_output(['git', 'diff', 'HEAD']))
if folder is not None:
return
with open(os.path.join(self.log_dir, 'results.csv'), 'w') as f:
f.write("epoch,episode_train,validate_values,evaluate_reward"\
",train_time,test_time,steps_per_second\n")
mem = psutil.virtual_memory()
with open(os.path.join(self.log_dir, 'memory.csv'), 'w') as f:
f.write("epoch,available,free,buffers,cached"\
",available_readable,used_percent\n")
f.write("%d,%d,%d,%d,%d,%s,%.1f\n" % \
(0, mem.available, mem.free, mem.buffers, mem.cached
, bytes2human(mem.available), mem.percent))
def _update_log_files(self, agent, epoch, episode, valid_values
, eval_values, train_time, test_time, step_per_sec
, store_freq):
print "Updating log files"
with open(self.log_dir + '/results.csv', 'a') as f:
f.write("%d,%d,%.4f,%.4f,%d,%d,%.4f\n" % \
(epoch, episode, valid_values, eval_values
, train_time, test_time, step_per_sec))
mem = psutil.virtual_memory()
with open(self.log_dir + '/memory.csv', 'a') as f:
f.write("%d,%d,%d,%d,%d,%s,%.1f\n" % \
(epoch, mem.available, mem.free, mem.buffers, mem.cached
, bytes2human(mem.available), mem.percent))
agent.dump_network(self.network_dir + ('/%03d' % (epoch)) + '.npz')
if (store_freq >= 0 and epoch >= Environment.EPOCH_COUNT) or \
(store_freq > 0 and (epoch % store_freq == 0)):
agent.dump_exp(self.network_dir + '/exp.npz')
def _setup_record(self, network_file):
file_name, _ = os.path.splitext(os.path.basename(network_file))
time_str = time.strftime("_%m-%d-%H-%M", time.localtime())
img_dir = os.path.dirname(network_file) + '/images_' \
+ file_name + time_str
rom_name, _ = os.path.splitext(self.rom_name)
out_name = os.path.dirname(network_file) + '/' + rom_name + '_' \
+ file_name + time_str + '.mov'
print out_name
try:
os.stat(img_dir)
except OSError:
os.makedirs(img_dir)
self.api.setString('record_screen_dir', img_dir)
self.api.loadROM('../rom/' + self.rom_name)
return img_dir, out_name
def record_run(self, agent, network_file, episode_id = 1):
if episode_id > 1:
self.evaluate(agent, episode_id - 1)
system_state = self.api.cloneSystemState()
img_dir, out_name = self._setup_record(network_file)
if episode_id > 1:
self.api.restoreSystemState(system_state)
self.evaluate(agent, 1)
script = \
"""
{
ffmpeg -r 60 -i %s/%%06d.png -f mov -c:v libx264 %s
} || {
avconv -r 60 -i %s/%%06d.png -f mov -c:v libx264 %s
}
""" % (img_dir, out_name, img_dir, out_name)
os.system(script)
class ALEEnvironment(BaseEnvironment):
"""
A wrapper of Arcade Learning Environment, which inherits all members of ``BaseEnvironment``.
"""
# 63 games
ADVENTURE = "adventure"
AIR_RAID = "air_raid"
ALIEN = "alien"
AMIDAR = "amidar"
ASSAULT = "assault"
ASTERIX = "asterix"
ASTEROIDS = "asteroids"
ATLANTIS = "aslantis"
BANK_HEIST = "bank_heist"
BATTLE_ZONE = "battle_zone"
BEAM_RIDER = "beam_rider"
BERZERK = "berzerk"
BOWLING = "bowling"
BOXING = "boxing"
BREAKOUT = "breakout"
CARNIVAL = "carnival"
CENTIPEDE = "centipede"
CHOPPER_COMMAND = "chopper_command"
CRAZY_CLIMBER = "crazy_climber"
DEFENDER = "defender"
DEMON_ATTACK = "demon_attack"
DOUBLE_DUNK = "double_dunk"
ELEVATOR_ACTION = "elevator_action"
ENDURO = "enduro"
FISHING_DERBY = "fishing_derby"
FREEWAY = "freeway"
FROSTBITE = "frostbite"
GOPHER = "gopher"
GRAVITAR = "gravitar"
HERO = "hero"
ICE_HOCKEY = "ice_hockey"
JAMESBOND = "jamesbond"
JOURNEY_ESCAPE = "journey_escape"
KABOOM = "kaboom"
KANGAROO = "kangaroo"
KRULL = "krull"
KUNGFU_MASTER = "kung_fu_master"
MONTEZUMA = "montezuma_revenge"
MS_PACMAN = "ms_pacman"
UNKNOWN = "name_this_game"
PHOENIX = "phoenix"
PITFALL = "pitfall"
PONG = "pong"
POOYAN = "pooyan"
PRIVATE_EYE = "private_eye"
QBERT = "qbert"
RIVERRAID = "riverraid"
ROAD_RUNNER = "road_runner"
ROBOTANK = "robotank"
SEAQUEST = "seaquest"
SKIING = "skiing"
SOLARIS = "solaris"
SPACE_INVADERS = "space_invaders"
STAR_GUNNER = "star_gunner"
TENNIS = "tennis"
TIME_PILOT = "time_pilot"
TUTANKHAM = "tutankham"
UP_N_DOWN = "up_n_down"
VENTURE = "venture"
VIDEO_PINBALL = "video_pinball"
WIZARD_OF_WOR = "wizard_of_wor"
YARS_REVENGE = "yars_revenge"
ZAXXON = "zaxxon"
def __init__(self,
rom_name,
frame_skip=4,
repeat_action_probability=0.,
max_episode_steps=10000,
loss_of_life_termination=False,
loss_of_life_negative_reward=False,
bitwise_max_on_two_consecutive_frames=False,
is_render=False,
seed=None,
startup_policy=None,
disable_actions=None,
num_of_sub_actions=-1,
state_processor=AtariProcessor(resize_shape=(84, 84),
convert_to_grayscale=True)):
os.environ['SDL_VIDEO_CENTERED'] = '1'
file_exist = isfile(ALEEnvironment.get_rom_path(rom_name))
if not file_exist:
raise ValueError("Rom not found ! Please put rom " + rom_name +
".bin into: " + ALEEnvironment.get_rom_path())
self.__rom_name = rom_name
self.__ale = ALEInterface()
if frame_skip < 0:
print("Invalid frame_skip param ! Set default frame_skip = 4")
self.__frame_skip = 4
else:
self.__frame_skip = frame_skip
if repeat_action_probability < 0 or repeat_action_probability > 1:
raise ValueError("Invalid repeat_action_probability")
else:
self.__repeat_action_probability = repeat_action_probability
self.__max_episode_steps = max_episode_steps
self.__loss_of_life_termination = loss_of_life_termination
self.__loss_of_life_negative_reward = loss_of_life_negative_reward
self.__max_2_frames = bitwise_max_on_two_consecutive_frames
# Max 2 frames only work with grayscale
self.__grayscale = False
if state_processor is not None and type(
state_processor
) is AtariProcessor and state_processor.get_grayscale():
self.__grayscale = True
if self.__max_2_frames and self.__frame_skip > 1 and self.__grayscale:
self.__max_2_frames = True
else:
self.__max_2_frames = False
self.__is_render = is_render
self.__processor = state_processor
if seed is None or seed <= 0 or seed >= 9999:
if seed is not None and (seed < 0 or seed >= 9999):
print("Invalid seed ! Default seed = randint(0, 9999")
self.__seed = np.random.randint(0, 9999)
self.__random_seed = True
else:
self.__random_seed = False
self.__seed = seed
self.__current_steps = 0
self.__is_life_lost = False
self.__is_terminal = False
self.__current_lives = 0
self.__action_reduction = num_of_sub_actions
self.__scr_width, self.__scr_height, self.__action_set = self.__init_ale(
)
self.__prev_buffer = np.empty((self.__scr_height, self.__scr_width, 3),
dtype=np.uint8)
self.__current_buffer = np.empty(
(self.__scr_height, self.__scr_width, 3), dtype=np.uint8)
self.__current_state = None
self.__prev_state = None
self.__startup_policy = startup_policy
if disable_actions is None:
self.__dis_act = []
else:
self.__dis_act = disable_actions
if self.__processor is not None and self.__processor.get_number_of_objectives(
) > 1:
self.__multi_objs = True
else:
self.__multi_objs = False
def get_processor(self):
return self.__processor
def __init_ale(self):
self.__ale.setBool(b'display_screen', self.__is_render)
if self.__max_2_frames and self.__frame_skip > 1:
self.__ale.setInt(b'frame_skip', 1)
else:
self.__ale.setInt(b'frame_skip', self.__frame_skip)
self.__ale.setInt(b'random_seed', self.__seed)
self.__ale.setFloat(b'repeat_action_probability',
self.__repeat_action_probability)
self.__ale.setBool(b'color_averaging', False)
self.__ale.loadROM(
ALEEnvironment.get_rom_path(self.__rom_name).encode())
width, height = self.__ale.getScreenDims()
return width, height, self.__ale.getMinimalActionSet()
def clone(self):
if self.__random_seed:
seed = np.random.randint(0, 9999)
else:
seed = self.__seed
return ALEEnvironment(self.__rom_name, self.__frame_skip,
self.__repeat_action_probability,
self.__max_episode_steps,
self.__loss_of_life_termination,
self.__loss_of_life_negative_reward,
self.__max_2_frames, self.__is_render, seed,
self.__startup_policy,
self.__dis_act, self.__action_reduction,
self.__processor.clone())
def step_all(self, a):
if isinstance(a, (list, np.ndarray)):
if len(a) <= 0:
raise ValueError('Empty action list !')
a = a[0]
self.__current_steps += 1
act = self.__action_set[a]
rew = self._step(act)
next_state = self.get_state()
_is_terminal = self.is_terminal()
return next_state, rew, _is_terminal, self.__current_steps
def reset(self):
self.__ale.reset_game()
self.__current_lives = self.__ale.lives()
self.__is_life_lost = False
self.__is_terminal = False
self.__current_state = None
self.__prev_state = None
action_space = self.get_action_space()
v_range, is_range = action_space.get_range()
if len(v_range) > 1:
self.step(1)
# No op steps
if self.__startup_policy is not None:
max_steps = int(self.__startup_policy.get_max_steps())
for _ in range(max_steps):
act = self.__startup_policy.step(self.get_state(),
action_space)
self.step(act)
# Start training from this point
self.__current_steps = 0
# Reset processor
if self.__processor is not None:
self.__processor.reset()
return self.get_state()
def _pre_step(self, act):
if self.__max_2_frames and self.__frame_skip > 1:
rew = 0
for i in range(self.__frame_skip - 2):
rew += self.__ale.act(act)
self.__prev_buffer = self.__ale.getScreenRGB(
self.__prev_buffer)
self.__prev_buffer = self.__ale.getScreenRGB(self.__prev_buffer)
rew += self.__ale.act(act)
self.__current_buffer = self.__ale.getScreenRGB(
self.__current_buffer)
self.__is_terminal = self.__ale.game_over()
if self.__processor is not None:
self.__prev_state = self.__processor.process(
self.__prev_buffer)
self.__current_state = self.__processor.process(
self.__current_buffer)
else:
self.__prev_state = self.__prev_buffer
self.__current_state = self.__current_buffer
self.__current_state = np.maximum.reduce(
[self.__prev_state, self.__current_state])
else:
rew = self.__ale.act(act)
self.__current_buffer = self.__ale.getScreenRGB(
self.__current_buffer)
self.__is_terminal = self.__ale.game_over()
if self.__processor is not None:
self.__current_state = self.__processor.process(
self.__current_buffer)
if self.__multi_objs and self.__processor is not None:
all_rewards = self.__processor.get_rewards(rew)
return all_rewards
else:
return rew
def _step(self, act):
for i in range(len(self.__dis_act)):
if act == self.__dis_act[i]:
act = 0
if not self.__loss_of_life_termination and not self.__loss_of_life_negative_reward:
if not self.__is_terminal:
next_lives = self.__ale.lives()
if next_lives < self.__current_lives:
act = 1
self.__current_lives = next_lives
return self._pre_step(act)
else:
rew = self._pre_step(act)
next_lives = self.__ale.lives()
if next_lives < self.__current_lives:
if self.__loss_of_life_negative_reward:
rew -= 1
self.__current_lives = next_lives
self.__is_life_lost = True
return rew
def get_state(self):
if not self.__max_2_frames:
if self.__processor is not None:
return self.__current_state
else:
return self.__current_buffer
else:
return self.__current_state
def is_terminal(self):
if self.__loss_of_life_termination and self.__is_life_lost:
return True
elif self.__max_episode_steps is not None and self.__current_steps > self.__max_episode_steps:
return True
else:
return self.__is_terminal
@staticmethod
def get_rom_path(rom=None):
if rom is None:
return os.path.dirname(os.path.abspath(__file__)) + "/roms/"
else:
return os.path.dirname(
os.path.abspath(__file__)) + "/roms/" + rom + ".bin"
@staticmethod
def list_all_roms():
return [
f for f in listdir(ALEEnvironment.get_rom_path())
if isfile(join(ALEEnvironment.get_rom_path(), f))
]
def get_state_space(self):
if self.__processor is None:
shape = self.__current_buffer.shape
else:
shape = self.__processor.process(self.__current_buffer).shape
min_value = np.zeros(shape, dtype=np.uint8)
max_value = np.full(shape, 255)
return Space(min_value, max_value, True)
def get_action_space(self):
if self.__action_reduction >= 1:
return Space(0, self.__action_reduction - 1, True)
else:
return Space(0, len(self.__action_set) - 1, True)
def step(self, act):
if isinstance(act, (list, np.ndarray)):
if len(act) <= 0:
raise ValueError('Empty action list !')
act = act[0]
self.__current_steps += 1
act = self.__action_set[act]
rew = self._step(act)
return rew
def get_current_steps(self):
return self.__current_steps
def is_atari(self):
return True
def is_render(self):
return self.__is_render
def get_number_of_objectives(self):
if self.__processor is None:
return 1
else:
return self.__processor.get_number_of_objectives()
def get_number_of_agents(self):
if self.__processor is None:
return 1
else:
return self.__processor.get_number_of_agents()
def get_state_processor(self):
return self.__processor
class GameEnvironment:
def __init__(self, settings):
self.ale = ALEInterface()
self.ale.setBool('display_screen', settings['DISPLAY_SCREEN'])
self.ale.setBool('sound', settings['SOUND'])
self.ale.setBool('color_averaging', settings['COLOR_AVERAGING'])
self.ale.setInt('random_seed', settings['RANDOM_SEED'])
self.ale.setInt('frame_skip', settings['FRAME_SKIP'])
self.ale.setFloat('repeat_action_probability', settings['REPEAT_ACTION_PROB'])
roms_dir = settings['ROMS_DIR']
rom_name = settings['ROM_NAME']
ROM = None
if(rom_name.endswith('.bin')):
self.name = rom_name[:-4]
ROM = rom_name
else:
self.name = rom_name
ROM = rom_name + '.bin'
self.ale.loadROM(os.path.join(roms_dir, ROM))
self.random_starts = settings['RANDOM_STARTS']
self.rng = settings['RNG']
if(settings['MINIMAL_ACTION_SET']):
self.actions = self.ale.getMinimalActionSet()
else:
self.actions = self.ale.getLegalActionSet()
self.n_actions = len(self.actions)
self.width, self.height = self.ale.getScreenDims()
self.observation = np.zeros((self.height, self.width), dtype='uint8')
self.reward = None
self.game_over = None
self.terminal = None
self.total_lives = None
self.init()
def init(self):
self.restartGame()
self.reward = 0
self.game_over = self.gameOver()
self.terminal = self.game_over
self.total_lives = self.lives()
self.step(0)
def getState(self):
return self.observation, self.reward, self.terminal, self.game_over
def step(self, action, training=False):
self.reward = self.act(action)
self.paint()
lives = self.lives()
self.game_over = self.gameOver()
self.terminal = self.game_over
if(training and (lives < self.total_lives)):
self.terminal = True
self.total_lives = lives
return self.getState()
def newGame(self):
self.init()
for i in xrange(self.rng.randint(1, self.random_starts)):
self.act(0)
terminal = self.gameOver()
if(terminal):
print "Warning terminal in random init"
return self.step(0)
def newTestGame(self):
self.init()
return self.getState()
def paint(self):
self.ale.getScreenGrayscale(self.observation)
def getScreenRGB(self):
return self.ale.getScreenRGB()
def act(self, action):
assert ((action >= 0) and (action < self.n_actions))
return self.ale.act(self.actions[action])
def lives(self):
return self.ale.lives()
def restartGame(self):
self.ale.reset_game()
def gameOver(self):
return self.ale.game_over()
class ALEEnvironment(BaseEnvironment):
"""
The :class:`MinimalGameHandler` class takes care of the interface to the ALE and tries to do nothing else. It's
meant for advanced users who need fine control over every aspect of the process. It has many functions that are simply
wrappers of the underlying ALE but with pythonic names/usage.
Parameters
----------
rom : byte string
Specifies the directory to load the rom from. Must be a byte string: b'dir_for_rom/rom.bin'
display_screen : boolean
Default False. Whether or not to show the game. True takes longer to run but can be fun to watch
step_cap: int
Default None. Maximum number of steps to run in an episode. Breakout can sometimes not return terminal
even when game is ended. This fixes that and will return terminal after stepping above this count
"""
def __init__(self, rom, resize_shape=(84, 84), skip_frame=1, repeat_action_probability=0.0,
step_cap=None, loss_of_life_termination=False, loss_of_life_negative_reward=False,
grayscale=True, display_screen=False, seed=np.random.RandomState()):
# set up emulator
self.ale = ALEInterface()
if display_screen:
self.ale.setBool(b'display_screen', True)
self.ale.setInt(b'frame_skip', skip_frame)
self.ale.setInt(b'random_seed', seed.randint(0, 9999))
self.ale.setFloat(b'repeat_action_probability', repeat_action_probability)
self.ale.setBool(b'color_averaging', False)
self.ale.loadROM(rom.encode())
# setup gamescreen object. I think this is faster than recreating an empty each time
width, height = self.ale.getScreenDims()
channels = 1 if grayscale else 3
self.grayscale = grayscale
self.gamescreen = np.empty((height, width, 1), dtype=np.uint8)
self.resize_shape = resize_shape
self.skip_frame = skip_frame
self.step_cap = step_cap
self.curr_step_count = 0
# setup action converter
# ALE returns legal action indexes, convert these to just numbers
self.action_inds = self.ale.getMinimalActionSet()
# setup lives
self.loss_of_life_negative_reward = loss_of_life_negative_reward
self.cur_lives = self.ale.lives()
self.loss_of_life_termination = loss_of_life_termination
self.life_lost = False
def reset(self):
self.ale.reset_game()
self.cur_lives = self.ale.lives()
self.life_lost = False
self.curr_step_count = 0
def step(self, action):
self.curr_step_count += 1
ale_action = self.action_inds[action]
return self._step(ale_action)
def _step(self, ale_action):
if not self.loss_of_life_termination and not self.loss_of_life_negative_reward:
return self.ale.act(ale_action)
else:
rew = self.ale.act(ale_action)
new_lives = self.ale.lives()
if new_lives < self.cur_lives:
# if loss of life is negative reward subtract 1 from reward
if self.loss_of_life_negative_reward:
rew -= 1
self.cur_lives = new_lives
self.life_lost = True
return rew
def get_state(self):
if self.grayscale:
self.gamescreen = self.ale.getScreenGrayscale(self.gamescreen)
else:
self.gamescreen = self.ale.getScreenRGB(self.gamescreen)
# if resize_shape is none then don't resize
if self.resize_shape is not None:
# if grayscale we remove the last dimmension (channel)
if self.grayscale:
processedImg = imresize(self.gamescreen[:, :, 0], self.resize_shape)
else:
processedImg = imresize(self.gamescreen, self.resize_shape)
return processedImg
def get_state_shape(self):
return self.resize_shape
def get_terminal(self):
if self.loss_of_life_termination and self.life_lost:
return True
elif self.step_cap is not None and self.curr_step_count > self.step_cap:
return True
else:
return self.ale.game_over()
def get_num_actions(self):
return len(self.action_inds)
#
# print ''
# initialization
np.random.seed(SEED)
ale = ALEInterface()
if SEED == None:
ale.setInt('random_seed', 0)
else:
ale.setInt('random_seed', SEED)
ale.setInt("frame_skip",frameSkip)
ale.setBool('color_averaging', True)
ale.setBool('sound', False)
ale.setBool('display_screen', False)
ale.setFloat("repeat_action_probability", 0.0)
ale.loadROM(romPath)
legal_actions = ale.getMinimalActionSet()
n_actions = len(legal_actions)
opt.n_actions = n_actions
explorationRateDelta = (initialExplorationRate - finalExplorationRate)/(finalExplorationFrame-startLearningFrame)
explorationRate = initialExplorationRate + startLearningFrame*explorationRateDelta
if networkType == "CNN":
width = 84
height = 84
Dim = [height,width]
else:
width = 36
height = 41
class AtariPlayer(RLEnvironment):
"""
A wrapper for atari emulator.
NOTE: will automatically restart when a real episode ends
"""
def __init__(self, rom_file, viz=0, height_range=(None,None),
frame_skip=4, image_shape=(84, 84), nullop_start=30,
live_lost_as_eoe=True):
"""
:param rom_file: path to the rom
:param frame_skip: skip every k frames and repeat the action
:param image_shape: (w, h)
:param height_range: (h1, h2) to cut
:param viz: visualization to be done.
Set to 0 to disable.
Set to a positive number to be the delay between frames to show.
Set to a string to be a directory to store frames.
:param nullop_start: start with random number of null ops
:param live_losts_as_eoe: consider lost of lives as end of episode. useful for training.
"""
super(AtariPlayer, self).__init__()
if not os.path.isfile(rom_file) and '/' not in rom_file:
rom_file = get_dataset_dir('atari_rom', rom_file)
assert os.path.isfile(rom_file), \
"rom {} not found. Please download at {}".format(rom_file, ROM_URL)
try:
ALEInterface.setLoggerMode(ALEInterface.Logger.Warning)
except AttributeError:
log_once()
# avoid simulator bugs: https://github.com/mgbellemare/Arcade-Learning-Environment/issues/86
with _ALE_LOCK:
self.ale = ALEInterface()
self.rng = get_rng(self)
self.ale.setInt(b"random_seed", self.rng.randint(0, 10000))
self.ale.setBool(b"showinfo", False)
self.ale.setInt(b"frame_skip", 1)
self.ale.setBool(b'color_averaging', False)
# manual.pdf suggests otherwise.
self.ale.setFloat(b'repeat_action_probability', 0.0)
# viz setup
if isinstance(viz, six.string_types):
assert os.path.isdir(viz), viz
self.ale.setString(b'record_screen_dir', viz)
viz = 0
if isinstance(viz, int):
viz = float(viz)
self.viz = viz
if self.viz and isinstance(self.viz, float):
self.windowname = os.path.basename(rom_file)
cv2.startWindowThread()
cv2.namedWindow(self.windowname)
self.ale.loadROM(rom_file.encode('utf-8'))
self.width, self.height = self.ale.getScreenDims()
self.actions = self.ale.getMinimalActionSet()
self.live_lost_as_eoe = live_lost_as_eoe
self.frame_skip = frame_skip
self.nullop_start = nullop_start
self.height_range = height_range
self.image_shape = image_shape
self.current_episode_score = StatCounter()
self.restart_episode()
def _grab_raw_image(self):
"""
:returns: the current 3-channel image
"""
m = self.ale.getScreenRGB()
return m.reshape((self.height, self.width, 3))
def current_state(self):
"""
:returns: a gray-scale (h, w, 1) float32 image
"""
ret = self._grab_raw_image()
# max-pooled over the last screen
ret = np.maximum(ret, self.last_raw_screen)
if self.viz:
if isinstance(self.viz, float):
#m = cv2.resize(ret, (1920,1200))
cv2.imshow(self.windowname, ret)
time.sleep(self.viz)
ret = ret[self.height_range[0]:self.height_range[1],:].astype('float32')
# 0.299,0.587.0.114. same as rgb2y in torch/image
ret = cv2.cvtColor(ret, cv2.COLOR_RGB2GRAY)
ret = cv2.resize(ret, self.image_shape)
ret = np.expand_dims(ret, axis=2)
return ret
def get_action_space(self):
return DiscreteActionSpace(len(self.actions))
def restart_episode(self):
if self.current_episode_score.count > 0:
self.stats['score'].append(self.current_episode_score.sum)
self.current_episode_score.reset()
self.ale.reset_game()
# random null-ops start
n = self.rng.randint(self.nullop_start)
self.last_raw_screen = self._grab_raw_image()
for k in range(n):
if k == n - 1:
self.last_raw_screen = self._grab_raw_image()
self.ale.act(0)
def action(self, act):
"""
:param act: an index of the action
:returns: (reward, isOver)
"""
oldlives = self.ale.lives()
r = 0
for k in range(self.frame_skip):
if k == self.frame_skip - 1:
self.last_raw_screen = self._grab_raw_image()
r += self.ale.act(self.actions[act])
newlives = self.ale.lives()
if self.ale.game_over() or \
(self.live_lost_as_eoe and newlives < oldlives):
break
self.current_episode_score.feed(r)
isOver = self.ale.game_over()
if isOver:
self.restart_episode()
if self.live_lost_as_eoe:
isOver = isOver or newlives < oldlives
return (r, isOver)
class AleEnv():
def __init__(self, rom, display_screen, use_env_frame_skip, frame_repeat):
self.actions = None
self.rom = rom
self.display_screen = display_screen
self.use_env_frame_skip = use_env_frame_skip
self.frame_repeat = frame_repeat
def initialize(self):
self.ale = ALEInterface()
self.ale.setInt("random_seed", random.randint(1, 1000))
if self.display_screen:
self.ale.setBool('display_screen', True)
if self.use_env_frame_skip == True:
self.ale.setInt('frame_skip', self.frame_repeat)
self.ale.setBool('color_averaging', True)
self.ale.setFloat('repeat_action_probability', 0)
self.ale.loadROM(self.rom)
self.actions = self.ale.getMinimalActionSet()
print 'actions: %s' % self.actions
(self.screen_width,self.screen_height) = self.ale.getScreenDims()
print("width/height: " +str(self.screen_width) + "/" + str(self.screen_height))
self.initialized = True
def get_actions(self, rom=None):
if self.actions is None and rom != None:
ale = ALEInterface()
ale.loadROM(rom)
self.actions = ale.getMinimalActionSet()
return self.actions
@property
def state_dtype(self):
return np.uint8
@property
def continuous_action(self):
return False
def reset_game(self):
self.ale.reset_game()
def lives(self):
return self.ale.lives()
def getScreenRGB(self):
return self.ale.getScreenRGB()
def getState(self, debug_display=False, debug_input=None):
screen = self.ale.getScreenGrayscale()
if screen is not None and debug_display:
debug_input.show(screen.reshape(screen.shape[0], screen.shape[1]))
return screen.reshape(self.screen_height, self.screen_width)
def act(self, action):
return self.ale.act(action)
def game_over(self):
return self.ale.game_over()
def finish(self):
return
class AtariEnvironment:
def __init__(self, args, outputDir):
self.outputDir = outputDir
self.screenCaptureFrequency = args.screen_capture_freq
self.ale = ALEInterface()
self.ale.setInt(b'random_seed', 123456)
random.seed(123456)
# Fix https://groups.google.com/forum/#!topic/deep-q-learning/p4FAIaabwlo
self.ale.setFloat(b'repeat_action_probability', 0.0)
# Load the ROM file
self.ale.loadROM(args.rom)
self.actionSet = self.ale.getMinimalActionSet()
self.gameNumber = 0
self.stepNumber = 0
self.resetGame()
def getNumActions(self):
return len(self.actionSet)
def getState(self):
return self.state
def getGameNumber(self):
return self.gameNumber
def getFrameNumber(self):
return self.ale.getFrameNumber()
def getEpisodeFrameNumber(self):
return self.ale.getEpisodeFrameNumber()
def getEpisodeStepNumber(self):
return self.episodeStepNumber
def getStepNumber(self):
return self.stepNumber
def getGameScore(self):
return self.gameScore
def isGameOver(self):
return self.ale.game_over()
def step(self, action):
previousLives = self.ale.lives()
reward = 0
isTerminal = 0
self.stepNumber += 1
self.episodeStepNumber += 1
for i in range(4):
prevScreenRGB = self.ale.getScreenRGB()
reward += self.ale.act(self.actionSet[action])
screenRGB = self.ale.getScreenRGB()
# Detect end of episode, I don't think I'm handling this right in terms
# of the overall game loop (??)
if self.ale.lives() < previousLives or self.ale.game_over():
isTerminal = 1
break
if self.gameNumber % self.screenCaptureFrequency == 0:
dir = self.outputDir + '/screen_cap/game-%06d' % (self.gameNumber)
if not os.path.isdir(dir):
os.makedirs(dir)
self.ale.saveScreenPNG(dir + '/frame-%06d.png' % (self.getEpisodeFrameNumber()))
maxedScreen = np.maximum(screenRGB, prevScreenRGB)
self.state = self.state.stateByAddingScreen(maxedScreen, self.ale.getFrameNumber())
self.gameScore += reward
return reward, self.state, isTerminal
def resetGame(self):
if self.ale.game_over():
self.gameNumber += 1
self.ale.reset_game()
self.state = State().stateByAddingScreen(self.ale.getScreenRGB(), self.ale.getFrameNumber())
self.gameScore = 0
self.episodeStepNumber = 0 # environment steps vs ALE frames. Will probably be 4*frame number
class MyEnv(Environment):
VALIDATION_MODE = 0
def __init__(self, rng, rom="ale/breakout.bin", frame_skip=4,
ale_options=[{"key": "random_seed", "value": 0},
{"key": "color_averaging", "value": True},
{"key": "repeat_action_probability", "value": 0.}]):
self._mode = -1
self._modeScore = 0.0
self._modeEpisodeCount = 0
self._frameSkip = frame_skip if frame_skip >= 1 else 1
self._randomState = rng
self._ale = ALEInterface()
for option in ale_options:
t = type(option["value"])
if t is int:
self._ale.setInt(option["key"], option["value"])
elif t is float:
self._ale.setFloat(option["key"], option["value"])
elif t is bool:
self._ale.setBool(option["key"], option["value"])
else:
raise ValueError("Option {} ({}) is not an int, bool or float.".format(option["key"], t))
self._ale.loadROM(rom)
w, h = self._ale.getScreenDims()
self._screen = np.empty((h, w), dtype=np.uint8)
self._reducedScreen = np.empty((84, 84), dtype=np.uint8)
self._actions = self._ale.getMinimalActionSet()
def reset(self, mode):
if mode == MyEnv.VALIDATION_MODE:
if self._mode != MyEnv.VALIDATION_MODE:
self._mode = MyEnv.VALIDATION_MODE
self._modeScore = 0.0
self._modeEpisodeCount = 0
else:
self._modeEpisodeCount += 1
elif self._mode != -1: # and thus mode == -1
self._mode = -1
self._ale.reset_game()
for _ in range(self._randomState.randint(15)):
self._ale.act(0)
self._ale.getScreenGrayscale(self._screen)
cv2.resize(self._screen, (84, 84), self._reducedScreen, interpolation=cv2.INTER_NEAREST)
return [4 * [84 * [84 * [0]]]]
def act(self, action):
action = self._actions[action]
reward = 0
for _ in range(self._frameSkip):
reward += self._ale.act(action)
if self.inTerminalState():
break
self._ale.getScreenGrayscale(self._screen)
cv2.resize(self._screen, (84, 84), self._reducedScreen, interpolation=cv2.INTER_NEAREST)
self._modeScore += reward
return np.sign(reward)
def summarizePerformance(self, test_data_set):
if self.inTerminalState() == False:
self._modeEpisodeCount += 1
print("== Mean score per episode is {} over {} episodes ==".format(self._modeScore / self._modeEpisodeCount, self._modeEpisodeCount))
def inputDimensions(self):
return [(4, 84, 84)]
def observationType(self, subject):
return np.uint8
def nActions(self):
return len(self._actions)
def observe(self):
return [np.array(self._reducedScreen)]
def inTerminalState(self):
return self._ale.game_over()
class AtariPlayer(RLEnvironment):
"""
A wrapper for atari emulator.
"""
def __init__(self, rom_file, viz=0, height_range=(None,None),
frame_skip=4, image_shape=(84, 84), nullop_start=30,
live_lost_as_eoe=True):
"""
:param rom_file: path to the rom
:param frame_skip: skip every k frames and repeat the action
:param image_shape: (w, h)
:param height_range: (h1, h2) to cut
:param viz: visualization to be done.
Set to 0 to disable.
Set to a positive number to be the delay between frames to show.
Set to a string to be a directory to store frames.
:param nullop_start: start with random number of null ops
:param live_losts_as_eoe: consider lost of lives as end of episode. useful for training.
"""
super(AtariPlayer, self).__init__()
self.ale = ALEInterface()
self.rng = get_rng(self)
self.ale.setInt("random_seed", self.rng.randint(0, 10000))
self.ale.setBool("showinfo", False)
try:
ALEInterface.setLoggerMode(ALEInterface.Logger.Warning)
except AttributeError:
log_once()
self.ale.setInt("frame_skip", 1)
self.ale.setBool('color_averaging', False)
# manual.pdf suggests otherwise. may need to check
self.ale.setFloat('repeat_action_probability', 0.0)
# viz setup
if isinstance(viz, six.string_types):
assert os.path.isdir(viz), viz
self.ale.setString('record_screen_dir', viz)
viz = 0
if isinstance(viz, int):
viz = float(viz)
self.viz = viz
if self.viz and isinstance(self.viz, float):
self.windowname = os.path.basename(rom_file)
cv2.startWindowThread()
cv2.namedWindow(self.windowname)
self.ale.loadROM(rom_file)
self.width, self.height = self.ale.getScreenDims()
self.actions = self.ale.getMinimalActionSet()
self.live_lost_as_eoe = live_lost_as_eoe
self.frame_skip = frame_skip
self.nullop_start = nullop_start
self.height_range = height_range
self.image_shape = image_shape
self.current_episode_score = StatCounter()
self.restart_episode()
def _grab_raw_image(self):
"""
:returns: the current 3-channel image
"""
m = self.ale.getScreenRGB()
return m.reshape((self.height, self.width, 3))
def current_state(self):
"""
:returns: a gray-scale (h, w, 1) image
"""
ret = self._grab_raw_image()
# max-pooled over the last screen
ret = np.maximum(ret, self.last_raw_screen)
if self.viz:
if isinstance(self.viz, float):
cv2.imshow(self.windowname, ret)
time.sleep(self.viz)
ret = ret[self.height_range[0]:self.height_range[1],:]
# 0.299,0.587.0.114. same as rgb2y in torch/image
ret = cv2.cvtColor(ret, cv2.COLOR_RGB2GRAY)
ret = cv2.resize(ret, self.image_shape)
ret = np.expand_dims(ret, axis=2)
return ret
def get_num_actions(self):
"""
:returns: the number of legal actions
"""
return len(self.actions)
def restart_episode(self):
if self.current_episode_score.count > 0:
self.stats['score'].append(self.current_episode_score.sum)
self.current_episode_score.reset()
self.ale.reset_game()
# random null-ops start
n = self.rng.randint(self.nullop_start)
self.last_raw_screen = self._grab_raw_image()
for k in range(n):
if k == n - 1:
self.last_raw_screen = self._grab_raw_image()
self.ale.act(0)
def action(self, act):
"""
:param act: an index of the action
:returns: (reward, isOver)
"""
oldlives = self.ale.lives()
r = 0
for k in range(self.frame_skip):
if k == self.frame_skip - 1:
self.last_raw_screen = self._grab_raw_image()
r += self.ale.act(self.actions[act])
newlives = self.ale.lives()
if self.ale.game_over() or \
(self.live_lost_as_eoe and newlives < oldlives):
break
self.current_episode_score.feed(r)
isOver = self.ale.game_over()
if isOver:
self.restart_episode()
if self.live_lost_as_eoe:
isOver = isOver or newlives < oldlives
return (r, isOver)
def get_stat(self):
try:
return {'avg_score': np.mean(self.stats['score']),
'max_score': float(np.max(self.stats['score'])) }
except ValueError:
return {}
class GameState(object):
def __init__(self, rand_seed, display=False, no_op_max=7):
self.ale = ALEInterface()
self.ale.setInt(b'random_seed', rand_seed)
self.ale.setFloat(b'repeat_action_probability', 0.0)
self.ale.setBool(b'color_averaging', True)
self.ale.setInt(b'frame_skip', 4)
self._no_op_max = no_op_max
if display:
self._setup_display()
self.ale.loadROM(ROM.encode('ascii'))
# collect minimal action set
self.real_actions = self.ale.getMinimalActionSet()
# height=210, width=160
self._screen = np.empty((210, 160, 1), dtype=np.uint8)
self.reset()
def _process_frame(self, action, reshape):
reward = self.ale.act(action)
terminal = self.ale.game_over()
# screen shape is (210, 160, 1)
self.ale.getScreenGrayscale(self._screen)
# reshape it into (210, 160)
reshaped_screen = np.reshape(self._screen, (210, 160))
# resize to height=110, width=84
resized_screen = cv2.resize(reshaped_screen, (84, 110))
x_t = resized_screen[18:102,:]
if reshape:
x_t = np.reshape(x_t, (84, 84, 1))
x_t = x_t.astype(np.float32)
x_t *= (1.0/255.0)
return reward, terminal, x_t
def _setup_display(self):
if sys.platform == 'darwin':
import pygame
pygame.init()
self.ale.setBool(b'sound', False)
elif sys.platform.startswith('linux'):
self.ale.setBool(b'sound', True)
self.ale.setBool(b'display_screen', True)
def reset(self):
self.ale.reset_game()
# randomize initial state
if self._no_op_max > 0:
no_op = np.random.randint(0, self._no_op_max + 1)
for _ in range(no_op):
self.ale.act(0)
_, _, x_t = self._process_frame(0, False)
self.reward = 0
self.terminal = False
self.s_t = np.stack((x_t, x_t, x_t, x_t), axis = 2)
def process(self, action):
# convert original 18 action index to minimal action set index
real_action = self.real_actions[action]
r, t, x_t1 = self._process_frame(real_action, True)
self.reward = r
self.terminal = t
self.s_t1 = np.append(self.s_t[:,:,1:], x_t1, axis = 2)
def update(self):
self.s_t = self.s_t1
class Emulator:
def __init__(self, rom_path, rom_name, visualize, actor_id, rseed, single_life_episodes = False):
self.ale = ALEInterface()
self.ale.setInt("random_seed", rseed * (actor_id +1))
# For fuller control on explicit action repeat (>= ALE 0.5.0)
self.ale.setFloat("repeat_action_probability", 0.0)
# Disable frame_skip and color_averaging
# See: http://is.gd/tYzVpj
self.ale.setInt("frame_skip", 1)
self.ale.setBool("color_averaging", False)
self.ale.loadROM(rom_path + "/" + rom_name + ".bin")
self.legal_actions = self.ale.getMinimalActionSet()
self.screen_width,self.screen_height = self.ale.getScreenDims()
#self.ale.setBool('display_screen', True)
# Processed historcal frames that will be fed in to the network
# (i.e., four 84x84 images)
self.screen_images_processed = np.zeros((IMG_SIZE_X, IMG_SIZE_Y,
NR_IMAGES))
self.rgb_screen = np.zeros((self.screen_height,self.screen_width, 3), dtype=np.uint8)
self.gray_screen = np.zeros((self.screen_height,self.screen_width,1), dtype=np.uint8)
self.frame_pool = np.empty((2, self.screen_height, self.screen_width))
self.current = 0
self.lives = self.ale.lives()
self.visualize = visualize
self.visualize_processed = False
self.windowname = rom_name + ' ' + str(actor_id)
if self.visualize:
logger.debug("Opening emulator window...")
#from skimage import io
#io.use_plugin('qt')
cv2.startWindowThread()
cv2.namedWindow(self.windowname)
logger.debug("Emulator window opened")
if self.visualize_processed:
logger.debug("Opening processed frame window...")
cv2.startWindowThread()
logger.debug("Processed frame window opened")
cv2.namedWindow(self.windowname + "_processed")
self.single_life_episodes = single_life_episodes
def get_screen_image(self):
""" Add screen (luminance) to frame pool """
# [screen_image, screen_image_rgb] = [self.ale.getScreenGrayscale(),
# self.ale.getScreenRGB()]
self.ale.getScreenGrayscale(self.gray_screen)
self.ale.getScreenRGB(self.rgb_screen)
self.frame_pool[self.current] = np.squeeze(self.gray_screen)
self.current = (self.current + 1) % FRAMES_IN_POOL
return self.rgb_screen
def new_game(self):
""" Restart game """
self.ale.reset_game()
self.lives = self.ale.lives()
if MAX_START_WAIT < 0:
logger.debug("Cannot time travel yet.")
sys.exit()
elif MAX_START_WAIT > 0:
wait = random.randint(0, MAX_START_WAIT)
else:
wait = 0
for _ in xrange(wait):
self.ale.act(self.legal_actions[0])
def process_frame_pool(self):
""" Preprocess frame pool """
img = None
if BLEND_METHOD == "max_pool":
img = np.amax(self.frame_pool, axis=0)
#img resize(img[:210, :], (84, 84))
img = cv2.resize(img[:210, :], (84, 84),
interpolation=cv2.INTER_LINEAR)
img = img.astype(np.float32)
img *= (1.0/255.0)
return img
# Reduce height to 210, if not so
#cropped_img = img[:210, :]
# Downsample to 110x84
#down_sampled_img = resize(cropped_img, (84, 84))
# Crop to 84x84 playing area
#stackable_image = down_sampled_img[:, 26:110]
#return stackable_image
def action_repeat(self, a):
""" Repeat action and grab screen into frame pool """
reward = 0
for i in xrange(ACTION_REPEAT):
reward += self.ale.act(self.legal_actions[a])
new_screen_image_rgb = self.get_screen_image()
return reward, new_screen_image_rgb
def get_reshaped_state(self, state):
return np.reshape(state,
(1, IMG_SIZE_X, IMG_SIZE_Y, NR_IMAGES))
#return np.reshape(self.screen_images_processed,
# (1, IMG_SIZE_X, IMG_SIZE_Y, NR_IMAGES))
def get_initial_state(self):
""" Get the initial state """
self.new_game()
for step in xrange(NR_IMAGES):
reward, new_screen_image_rgb = self.action_repeat(0)
self.screen_images_processed[:, :, step] = self.process_frame_pool()
self.show_screen(new_screen_image_rgb)
if self.is_terminal():
MAX_START_WAIT -= 1
return self.get_initial_state()
return np.copy(self.screen_images_processed) #get_reshaped_state()
def next(self, action):
""" Get the next state, reward, and game over signal """
reward, new_screen_image_rgb = self.action_repeat(np.argmax(action))
self.screen_images_processed[:, :, 0:3] = \
self.screen_images_processed[:, :, 1:4]
self.screen_images_processed[:, :, 3] = self.process_frame_pool()
self.show_screen(new_screen_image_rgb)
terminal = self.is_terminal()
self.lives = self.ale.lives()
return np.copy(self.screen_images_processed), reward, terminal #get_reshaped_state(), reward, terminal
def show_screen(self, image):
""" Show visuals for raw and processed images """
if self.visualize:
#io.imshow(image[:210, :], fancy=True)
cv2.imshow(self.windowname, image[:210, :])
if self.visualize_processed:
#io.imshow(self.screen_images_processed[:, :, 3], fancy=True)
cv2.imshow(self.windowname + "_processed", self.screen_images_processed[:, :, 3])
def is_terminal(self):
if self.single_life_episodes:
return (self.is_over() or (self.lives > self.ale.lives()))
else:
return self.is_over()
def is_over(self):
return self.ale.game_over()
class AtariPlayer(gym.Env):
"""
A wrapper for ALE emulator, with configurations to mimic DeepMind DQN settings.
Info:
score: the accumulated reward in the current game
gameOver: True when the current game is Over
"""
def __init__(self, rom_file, viz=0,
frame_skip=4, nullop_start=30,
live_lost_as_eoe=True, max_num_frames=0):
"""
Args:
rom_file: path to the rom
frame_skip: skip every k frames and repeat the action
viz: visualization to be done.
Set to 0 to disable.
Set to a positive number to be the delay between frames to show.
Set to a string to be a directory to store frames.
nullop_start: start with random number of null ops.
live_losts_as_eoe: consider lost of lives as end of episode. Useful for training.
max_num_frames: maximum number of frames per episode.
"""
super(AtariPlayer, self).__init__()
if not os.path.isfile(rom_file) and '/' not in rom_file:
rom_file = get_dataset_path('atari_rom', rom_file)
assert os.path.isfile(rom_file), \
"rom {} not found. Please download at {}".format(rom_file, ROM_URL)
try:
ALEInterface.setLoggerMode(ALEInterface.Logger.Error)
except AttributeError:
if execute_only_once():
logger.warn("You're not using latest ALE")
# avoid simulator bugs: https://github.com/mgbellemare/Arcade-Learning-Environment/issues/86
with _ALE_LOCK:
self.ale = ALEInterface()
self.rng = get_rng(self)
self.ale.setInt(b"random_seed", self.rng.randint(0, 30000))
self.ale.setInt(b"max_num_frames_per_episode", max_num_frames)
self.ale.setBool(b"showinfo", False)
self.ale.setInt(b"frame_skip", 1)
self.ale.setBool(b'color_averaging', False)
# manual.pdf suggests otherwise.
self.ale.setFloat(b'repeat_action_probability', 0.0)
# viz setup
if isinstance(viz, six.string_types):
assert os.path.isdir(viz), viz
self.ale.setString(b'record_screen_dir', viz)
viz = 0
if isinstance(viz, int):
viz = float(viz)
self.viz = viz
if self.viz and isinstance(self.viz, float):
self.windowname = os.path.basename(rom_file)
cv2.namedWindow(self.windowname)
self.ale.loadROM(rom_file.encode('utf-8'))
self.width, self.height = self.ale.getScreenDims()
self.actions = self.ale.getMinimalActionSet()
self.live_lost_as_eoe = live_lost_as_eoe
self.frame_skip = frame_skip
self.nullop_start = nullop_start
self.action_space = spaces.Discrete(len(self.actions))
self.observation_space = spaces.Box(
low=0, high=255, shape=(self.height, self.width, 1), dtype=np.uint8)
self._restart_episode()
def get_action_meanings(self):
return [ACTION_MEANING[i] for i in self.actions]
def _grab_raw_image(self):
"""
:returns: the current 3-channel image
"""
m = self.ale.getScreenRGB()
return m.reshape((self.height, self.width, 3))
def _current_state(self):
"""
:returns: a gray-scale (h, w, 1) uint8 image
"""
ret = self._grab_raw_image()
# max-pooled over the last screen
ret = np.maximum(ret, self.last_raw_screen)
if self.viz:
if isinstance(self.viz, float):
cv2.imshow(self.windowname, ret)
cv2.waitKey(int(self.viz * 1000))
ret = ret.astype('float32')
# 0.299,0.587.0.114. same as rgb2y in torch/image
ret = cv2.cvtColor(ret, cv2.COLOR_RGB2GRAY)[:, :, np.newaxis]
return ret.astype('uint8') # to save some memory
def _restart_episode(self):
with _ALE_LOCK:
self.ale.reset_game()
# random null-ops start
n = self.rng.randint(self.nullop_start)
self.last_raw_screen = self._grab_raw_image()
for k in range(n):
if k == n - 1:
self.last_raw_screen = self._grab_raw_image()
self.ale.act(0)
def reset(self):
if self.ale.game_over():
self._restart_episode()
return self._current_state()
def step(self, act):
oldlives = self.ale.lives()
r = 0
for k in range(self.frame_skip):
if k == self.frame_skip - 1:
self.last_raw_screen = self._grab_raw_image()
r += self.ale.act(self.actions[act])
newlives = self.ale.lives()
if self.ale.game_over() or \
(self.live_lost_as_eoe and newlives < oldlives):
break
isOver = self.ale.game_over()
if self.live_lost_as_eoe:
isOver = isOver or newlives < oldlives
info = {'ale.lives': newlives}
return self._current_state(), r, isOver, info
def test(session,
hist_len=4,
discount=0.99,
act_rpt=4,
upd_freq=4,
min_sq_grad=0.01,
epsilon=0.05,
no_op_max=30,
num_tests=1,
learning_rate=0.0025,
momentum=0.95,
sq_momentum=0.95):
#Create ALE object
if len(sys.argv) < 3:
print('Usage: %s rom_file record_screen_dir' % sys.argv[0])
sys.exit()
ale = ALEInterface()
record_path = sys.argv[2]
ale.setString('record_screen_dir', record_path)
ale.setString('record_sound_filename', (record_path + '/sound.wav'))
ale.setInt('fragsize', 64)
cmd = 'mkdir '
cmd += record_path
os.system(cmd)
# Get & Set the desired settings
ale.setInt('random_seed', 123)
#Changes repeat action probability from default of 0.25
ale.setFloat('repeat_action_probability', 0.0)
# Set USE_SDL to true to display the screen. ALE must be compilied
# with SDL enabled for this to work. On OSX, pygame init is used to
# proxy-call SDL_main.
USE_SDL = False
if USE_SDL:
if sys.platform == 'darwin':
import pygame
pygame.init()
ale.setBool('sound', False) # Sound doesn't work on OSX
elif sys.platform.startswith('linux'):
ale.setBool('sound', True)
ale.setBool('display_screen', True)
# Load the ROM file
ale.loadROM(sys.argv[1])
# create DQN agent
# learning_rate and momentum are unused parameters (but needed)
agent = DQN(ale, session, epsilon, learning_rate, momentum, sq_momentum,
hist_len, len(ale.getMinimalActionSet()), None, discount,
rom_name(sys.argv[1]))
#Store the most recent two images
preprocess_stack = deque([], 2)
num_episodes = 0
while num_episodes < num_tests:
#initialize sequence with initial image
seq = list()
#We only have one image, we cannot combine two images
perform_no_ops(ale, no_op_max, preprocess_stack, seq)
#proc_seq.append(pp.preprocess(seq))
total_reward = 0
while not ale.game_over():
state = get_state(seq, hist_len)
action = agent.get_action_best_network(state, epsilon)
#skip frames by repeating action
reward = 0
for i in range(act_rpt):
reward = reward + ale.act(action)
preprocess_stack.append(ale.getScreenRGB())
seq.append(pp.preprocess(preprocess_stack[0], preprocess_stack[1]))
total_reward += reward
print('Episode ended with score: %d' % (total_reward))
num_episodes = num_episodes + 1
ale.reset_game()
class AtariPlayer(gym.Env):
"""
A wrapper for ALE emulator, with configurations to mimic DeepMind DQN settings.
Info:
score: the accumulated reward in the current game
gameOver: True when the current game is Over
"""
def __init__(self, rom_file, viz=0,
frame_skip=4, nullop_start=30,
live_lost_as_eoe=True, max_num_frames=0):
"""
Args:
rom_file: path to the rom
frame_skip: skip every k frames and repeat the action
viz: visualization to be done.
Set to 0 to disable.
Set to a positive number to be the delay between frames to show.
Set to a string to be a directory to store frames.
nullop_start: start with random number of null ops.
live_losts_as_eoe: consider lost of lives as end of episode. Useful for training.
max_num_frames: maximum number of frames per episode.
"""
super(AtariPlayer, self).__init__()
if not os.path.isfile(rom_file) and '/' not in rom_file:
rom_file = get_dataset_path('atari_rom', rom_file)
assert os.path.isfile(rom_file), \
"rom {} not found. Please download at {}".format(rom_file, ROM_URL)
try:
ALEInterface.setLoggerMode(ALEInterface.Logger.Error)
except AttributeError:
if execute_only_once():
logger.warn("You're not using latest ALE")
# avoid simulator bugs: https://github.com/mgbellemare/Arcade-Learning-Environment/issues/86
with _ALE_LOCK:
self.ale = ALEInterface()
self.rng = get_rng(self)
self.ale.setInt(b"random_seed", self.rng.randint(0, 30000))
self.ale.setInt(b"max_num_frames_per_episode", max_num_frames)
self.ale.setBool(b"showinfo", False)
self.ale.setInt(b"frame_skip", 1)
self.ale.setBool(b'color_averaging', False)
# manual.pdf suggests otherwise.
self.ale.setFloat(b'repeat_action_probability', 0.0)
# viz setup
if isinstance(viz, six.string_types):
assert os.path.isdir(viz), viz
self.ale.setString(b'record_screen_dir', viz)
viz = 0
if isinstance(viz, int):
viz = float(viz)
self.viz = viz
if self.viz and isinstance(self.viz, float):
self.windowname = os.path.basename(rom_file)
cv2.startWindowThread()
cv2.namedWindow(self.windowname)
self.ale.loadROM(rom_file.encode('utf-8'))
self.width, self.height = self.ale.getScreenDims()
self.actions = self.ale.getMinimalActionSet()
self.live_lost_as_eoe = live_lost_as_eoe
self.frame_skip = frame_skip
self.nullop_start = nullop_start
self.action_space = spaces.Discrete(len(self.actions))
self.observation_space = spaces.Box(
low=0, high=255, shape=(self.height, self.width))
self._restart_episode()
def get_action_meanings(self):
return [ACTION_MEANING[i] for i in self.actions]
def _grab_raw_image(self):
"""
:returns: the current 3-channel image
"""
m = self.ale.getScreenRGB()
return m.reshape((self.height, self.width, 3))
def _current_state(self):
"""
:returns: a gray-scale (h, w) uint8 image
"""
ret = self._grab_raw_image()
# max-pooled over the last screen
ret = np.maximum(ret, self.last_raw_screen)
if self.viz:
if isinstance(self.viz, float):
cv2.imshow(self.windowname, ret)
cv2.waitKey(int(self.viz * 1000))
ret = ret.astype('float32')
# 0.299,0.587.0.114. same as rgb2y in torch/image
ret = cv2.cvtColor(ret, cv2.COLOR_RGB2GRAY)
return ret.astype('uint8') # to save some memory
def _restart_episode(self):
with _ALE_LOCK:
self.ale.reset_game()
# random null-ops start
n = self.rng.randint(self.nullop_start)
self.last_raw_screen = self._grab_raw_image()
for k in range(n):
if k == n - 1:
self.last_raw_screen = self._grab_raw_image()
self.ale.act(0)
def _reset(self):
if self.ale.game_over():
self._restart_episode()
return self._current_state()
def _step(self, act):
oldlives = self.ale.lives()
r = 0
for k in range(self.frame_skip):
if k == self.frame_skip - 1:
self.last_raw_screen = self._grab_raw_image()
r += self.ale.act(self.actions[act])
newlives = self.ale.lives()
if self.ale.game_over() or \
(self.live_lost_as_eoe and newlives < oldlives):
break
isOver = self.ale.game_over()
if self.live_lost_as_eoe:
isOver = isOver or newlives < oldlives
info = {'ale.lives': newlives}
return self._current_state(), r, isOver, info
class AtariEnvironment:
def __init__(self, args, outputDir):
self.outputDir = outputDir
self.screenCaptureFrequency = args.screen_capture_freq
self.ale = ALEInterface()
self.ale.setInt(b'random_seed', 123456)
random.seed(123456)
# Fix https://groups.google.com/forum/#!topic/deep-q-learning/p4FAIaabwlo
self.ale.setFloat(b'repeat_action_probability', 0.0)
# Load the ROM file
self.ale.loadROM(args.rom)
self.actionSet = self.ale.getMinimalActionSet()
self.gameNumber = 0
self.stepNumber = 0
self.resetGame()
def getNumActions(self):
return len(self.actionSet)
def getState(self):
return self.state
def getGameNumber(self):
return self.gameNumber
def getFrameNumber(self):
return self.ale.getFrameNumber()
def getEpisodeFrameNumber(self):
return self.ale.getEpisodeFrameNumber()
def getEpisodeStepNumber(self):
return self.episodeStepNumber
def getStepNumber(self):
return self.stepNumber
def getGameScore(self):
return self.gameScore
def isGameOver(self):
return self.ale.game_over()
def step(self, action):
previousLives = self.ale.lives()
reward = 0
isTerminal = 0
self.stepNumber += 1
self.episodeStepNumber += 1
for i in range(4):
prevScreenRGB = self.ale.getScreenRGB()
reward += self.ale.act(self.actionSet[action])
screenRGB = self.ale.getScreenRGB()
# Detect end of episode, I don't think I'm handling this right in terms
# of the overall game loop (??)
if self.ale.lives() < previousLives or self.ale.game_over():
isTerminal = 1
break
if self.gameNumber % self.screenCaptureFrequency == 0:
dir = self.outputDir + '/screen_cap/game-%06d' % (
self.gameNumber)
if not os.path.isdir(dir):
os.makedirs(dir)
self.ale.saveScreenPNG(dir + '/frame-%06d.png' %
(self.getEpisodeFrameNumber()))
maxedScreen = np.maximum(screenRGB, prevScreenRGB)
self.state = self.state.stateByAddingScreen(maxedScreen,
self.ale.getFrameNumber())
self.gameScore += reward
return reward, self.state, isTerminal
def resetGame(self):
if self.ale.game_over():
self.gameNumber += 1
self.ale.reset_game()
self.state = State().stateByAddingScreen(self.ale.getScreenRGB(),
self.ale.getFrameNumber())
self.gameScore = 0
self.episodeStepNumber = 0 # environment steps vs ALE frames. Will probably be 4*frame number
class Agent(object):
def __init__(self):
self._ale = ALEInterface()
self._ale.setInt('random_seed', 123)
self._ale.setFloat('repeat_action_probability', 0.0)
self._ale.setBool('color_averaging', False)
self._ale.loadROM('roms/enduro.bin')
self._controller = Controller(self._ale)
self._extractor = StateExtractor(self._ale)
self._image = None
def run(self, learn, episodes=1, draw=False):
""" Implements the playing/learning loop.
Args:
learn(bool): Whether the self.learn() function should be called.
episodes (int): The number of episodes to run the agent for.
draw (bool): Whether to overlay the environment state on the frame.
Returns:
None
"""
for e in range(episodes):
# Observe the environment to set the initial state
(grid, self._image) = self._extractor.run(draw=draw, scale=4.0)
self.initialise(grid)
num_frames = self._ale.getFrameNumber()
# Each episode lasts 6500 frames
while self._ale.getFrameNumber() - num_frames < 6500:
# Take an action
self.act()
# Update the environment grid
(grid, self._image) = self._extractor.run(draw=draw, scale=4.0)
self.sense(grid)
# Perform learning if required
if learn:
self.learn()
self.callback(learn, e + 1, self._ale.getFrameNumber() - num_frames)
self._ale.reset_game()
def getActionsSet(self):
""" Returns the set of all possible actions
"""
return [Action.ACCELERATE, Action.RIGHT, Action.LEFT, Action.BREAK]
def move(self, action):
""" Executes the action and advances the game to the next state.
Args:
action (int): The action which should executed. Make sure to use
the constants returned by self.getActionsSet()
Returns:
int: The obtained reward after executing the action
"""
return self._controller.move(action)
def initialise(self, grid):
""" Called at the beginning of each episode, mainly used
for state initialisation.
Args:
grid (np.ndarray): 11x10 array with the initial environment grid.
Returns:
None
"""
raise NotImplementedError
def act(self):
""" Called at each loop iteration to choose and execute an action.
Returns:
None
"""
raise NotImplementedError
def sense(self, grid):
""" Called at each loop iteration to construct the new state from
the update environment grid.
Returns:
None
"""
raise NotImplementedError
def learn(self):
""" Called at each loop iteration when the agent is learning. It should
implement the learning procedure.
Returns:
None
"""
raise NotImplementedError
def callback(self, learn, episode, iteration):
""" Called at each loop iteration mainly for reporting purposes.
Args:
learn (bool): Indicates whether the agent is learning or not.
episode (int): The number of the current episode.
iteration (int): The number of the current iteration.
Returns:
None
"""
raise NotImplementedError
class AleEnv(object):
'''ALE wrapper for RL training
game_over_conditions={'points':(-1, 1)}: dict that describes all desired game over conditions
each key corresponds to a condition that is checked; the first condition met produces a game over
points: int or tuple of integers
int:
if x < 0, game ends when score is <= x
if x >= 0, game ends when score is >= x
tuple:
game ends if score <= x[0] or score >= x[1]
lives: int that ends game when lives <= x
frames: int that ends game when total number of frames >= x
episodes: int that ends game when num of episodes >= x
Use max_num_frames_per_episode to set max episode length
'''
# will include timing and hidden functionality in future iterations
def __init__(self,
rom_file,
display_screen=False,
sound=False,
random_seed=0,
game_over_conditions={},
frame_skip=1,
repeat_action_probability=0.25,
max_num_frames_per_episode=0,
min_action_set=False,
screen_color='gray',
fps=60,
output_buffer_size=1,
reduce_screen=False):
# ALE instance and setup
self.ale = ALEInterface()
#TODO: check if rom file exists; will crash jupyter kernel otherwise
self.ale.loadROM(str.encode(rom_file))
self.ale.setBool(b'sound', sound)
self.ale.setBool(b'display_screen', display_screen)
if min_action_set:
self.legal_actions = self.ale.getMinimalActionSet()
else:
self.legal_actions = self.ale.getLegalActionSet()
self.ale.setInt(b'random_seed', random_seed)
self.ale.setInt(b'frame_skip', frame_skip)
self.frame_skip = frame_skip
self.ale.setFloat(b'repeat_action_probability',
repeat_action_probability)
self.ale.setInt(b'max_num_frames_per_episode',
max_num_frames_per_episode)
self.ale.loadROM(str.encode(rom_file))
self.game_over_conditions = game_over_conditions
self.screen_color = screen_color
self.reduce_screen = reduce_screen
self.d_frame = (fps**-1) * self.frame_skip
# set up output buffer
self.output_buffer_size = output_buffer_size
self.queue_size = self.output_buffer_size
self._reset_params()
def observe(self, flatten=False, expand_dim=False):
if flatten is True:
out = np.stack(self.output_queue[i]
for i in range(self.output_buffer_size)).flatten()
if expand_dim is True:
return np.expand_dims(np.expand_dims(out, axis=0), axis=1)
else:
return out
else:
out = np.stack(self.output_queue[i]
for i in range(self.output_buffer_size))
out = np.squeeze(out)
if expand_dim is True:
return np.expand_dims(np.expand_dims(out, axis=0), axis=1)
else:
return out
@property
def width(self):
return self.game_screen.shape[1]
@property
def height(self):
return self.game_screen.shape[0]
@property
def game_over(self):
return self._game_over()
@property
def actions(self):
return self.legal_actions
@property
def lives(self):
return self.ale.lives()
def _reset_params(self):
self.total_points = 0
self.total_frames = 0
self.curr_episode = 1
self.prev_ep_frame_num = -float("inf")
if self.screen_color == 'gray' or self.screen_color == 'grey':
self.game_screen = np.squeeze(self.ale.getScreenGrayscale())
if self.reduce_screen:
self.game_screen = resize(self.game_screen,
output_shape=(110, 84))
self.game_screen = self.game_screen[0 + 21:-1 - 4, :]
elif self.screen_color == 'rgb' or self.screen_color == 'color':
self.game_screen = self.ale.getScreenRGB()
if self.reduce_screen:
self.game_screen = resize(self.game_screen,
output_shape=(110, 84, 3))
self.game_screen = self.game_screen[0 + 21:-1 - 4, :, :]
self.output_queue = deque(
np.zeros(shape=(self.queue_size - 1, self.height, self.width)),
self.queue_size)
self.output_queue.appendleft(self.game_screen)
def reset(self):
self.ale.reset_game()
self._reset_params()
def act(self, action):
reward = self.ale.act(self.legal_actions[action])
if self.screen_color == 'gray' or self.screen_color == 'grey':
self.game_screen = np.squeeze(self.ale.getScreenGrayscale())
if self.reduce_screen:
self.game_screen = resize(self.game_screen,
output_shape=(110, 84))
self.game_screen = self.game_screen[0 + 21:-1 - 4, :]
elif self.screen_color == 'rgb' or self.screen_color == 'color':
self.game_screen = self.ale.getScreenRGB()
if self.reduce_screen:
self.game_screen = resize(self.game_screen,
output_shape=(110, 84, 3))
self.game_screen = self.game_screen[0 + 21:-1 - 4, :, :]
self.output_queue.pop()
self.output_queue.appendleft(self.game_screen)
self.total_points += reward
self.total_frames += self.frame_skip
if self.ale.getEpisodeFrameNumber() <= self.prev_ep_frame_num:
self.curr_episode += 1
self.prev_ep_frame_num = self.ale.getEpisodeFrameNumber()
return reward, self.d_frame, self.game_over
def _game_over(self):
if self.ale.game_over():
return True
for cond in self.game_over_conditions:
if cond == 'points':
if isinstance(self.game_over_conditions[cond], int):
if self.total_points >= self.game_over_conditions[cond]:
return True
elif isinstance(self.game_over_conditions[cond], tuple):
if (self.total_points <= self.game_over_conditions[cond][0]
or self.total_points >=
self.game_over_conditions[cond][1]):
return True
elif cond == 'lives':
if self.lives <= self.game_over_conditions[cond]:
return True
elif cond == 'frames':
if self.total_frames >= self.game_over_conditions[cond]:
return True
elif cond == 'episodes':
if self.curr_episode >= self.game_over_conditions[cond]:
return True
else:
raise RuntimeError("ERROR: Invalid game over condition")
return False
class MyEnv(Environment):
VALIDATION_MODE = 0
def __init__(self,
rng,
rom="ale/breakout.bin",
frame_skip=4,
ale_options=[{
"key": "random_seed",
"value": 0
}, {
"key": "color_averaging",
"value": True
}, {
"key": "repeat_action_probability",
"value": 0.
}]):
self._mode = -1
self._modeScore = 0.0
self._modeEpisodeCount = 0
self._frameSkip = frame_skip if frame_skip >= 1 else 1
self._randomState = rng
self._ale = ALEInterface()
for option in ale_options:
t = type(option["value"])
if t is int:
self._ale.setInt(option["key"], option["value"])
elif t is float:
self._ale.setFloat(option["key"], option["value"])
elif t is bool:
self._ale.setBool(option["key"], option["value"])
else:
raise ValueError(
"Option {} ({}) is not an int, bool or float.".format(
option["key"], t))
self._ale.loadROM(rom)
w, h = self._ale.getScreenDims()
self._screen = np.empty((h, w), dtype=np.uint8)
self._reducedScreen = np.empty((84, 84), dtype=np.uint8)
self._actions = self._ale.getMinimalActionSet()
def reset(self, mode):
if mode == MyEnv.VALIDATION_MODE:
if self._mode != MyEnv.VALIDATION_MODE:
self._mode = MyEnv.VALIDATION_MODE
self._modeScore = 0.0
self._modeEpisodeCount = 0
else:
self._modeEpisodeCount += 1
elif self._mode != -1: # and thus mode == -1
self._mode = -1
self._ale.reset_game()
for _ in range(self._randomState.randint(15)):
self._ale.act(0)
self._ale.getScreenGrayscale(self._screen)
cv2.resize(self._screen, (84, 84),
self._reducedScreen,
interpolation=cv2.INTER_NEAREST)
return [4 * [84 * [84 * [0]]]]
def act(self, action):
action = self._actions[action]
reward = 0
for _ in range(self._frameSkip):
reward += self._ale.act(action)
if self.inTerminalState():
break
self._ale.getScreenGrayscale(self._screen)
cv2.resize(self._screen, (84, 84),
self._reducedScreen,
interpolation=cv2.INTER_NEAREST)
self._modeScore += reward
return np.sign(reward)
def summarizePerformance(self, test_data_set):
if self.inTerminalState() == False:
self._modeEpisodeCount += 1
print("== Mean score per episode is {} over {} episodes ==".format(
self._modeScore / self._modeEpisodeCount, self._modeEpisodeCount))
def inputDimensions(self):
return [(4, 84, 84)]
def observationType(self, subject):
return np.uint8
def nActions(self):
return len(self._actions)
def observe(self):
return [np.array(self._reducedScreen)]
def inTerminalState(self):
return self._ale.game_over()
class ALEEnvironment(Environment):
def __init__(self, rom_file, args):
from ale_python_interface import ALEInterface
self.ale = ALEInterface()
if args.display_screen:
if sys.platform == 'darwin':
import pygame
pygame.init()
self.ale.setBool('sound', False) # Sound doesn't work on OSX
elif sys.platform.startswith('linux'):
self.ale.setBool('sound', True)
self.ale.setBool('display_screen', True)
self.ale.setInt('frame_skip', args.frame_skip)
self.ale.setFloat('repeat_action_probability', args.repeat_action_probability)
self.ale.setBool('color_averaging', args.color_averaging)
if args.random_seed:
self.ale.setInt('random_seed', args.random_seed)
if args.record_screen_path:
if not os.path.exists(args.record_screen_path):
logger.info("Creating folder %s" % args.record_screen_path)
os.makedirs(args.record_screen_path)
logger.info("Recording screens to %s", args.record_screen_path)
self.ale.setString('record_screen_dir', args.record_screen_path)
if args.record_sound_filename:
logger.info("Recording sound to %s", args.record_sound_filename)
self.ale.setBool('sound', True)
self.ale.setString('record_sound_filename', args.record_sound_filename)
self.ale.loadROM(rom_file)
if args.minimal_action_set:
self.actions = self.ale.getMinimalActionSet()
logger.info("Using minimal action set with size %d" % len(self.actions))
else:
self.actions = self.ale.getLegalActionSet()
logger.info("Using full action set with size %d" % len(self.actions))
logger.debug("Actions: " + str(self.actions))
self.screen_width = args.screen_width
self.screen_height = args.screen_height
self.life_lost = False
def numActions(self):
return len(self.actions)
def restart(self):
# In test mode, the game is simply initialized. In train mode, if the game
# is in terminal state due to a life loss but not yet game over, then only
# life loss flag is reset so that the next game starts from the current
# state. Otherwise, the game is simply initialized.
if (
self.mode == 'test' or
not self.life_lost or # `reset` called in a middle of episode
self.ale.game_over() # all lives are lost
):
self.ale.reset_game()
self.life_lost = False
def act(self, action):
lives = self.ale.lives()
reward = self.ale.act(self.actions[action])
self.life_lost = (not lives == self.ale.lives())
return reward
def getScreen(self):
screen = self.ale.getScreenGrayscale()
resized = cv2.resize(screen, (self.screen_width, self.screen_height))
return resized
def isTerminal(self):
if self.mode == 'train':
return self.ale.game_over() or self.life_lost
return self.ale.game_over()