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()
def main():
arguments = docopt.docopt(__doc__, version='ALE Demo Version 1.0')
pygame.init()
ale = ALEInterface()
ale.setInt(b'random_seed', 123)
ale.setBool(b'display_screen', True)
ale.loadROM(str.encode(arguments['<rom_file>']))
legal_actions = ale.getLegalActionSet()
width, height = ale.getScreenDims()
print(width, height)
frame = ale.getScreenRGB()
frame = np.array(frame, dtype=float)
rewards, num_episodes = [], int(arguments['--iters'] or 5)
for episode in range(num_episodes):
total_reward = 0
while not ale.game_over():
total_reward += ale.act(random.choice(legal_actions))
print('Episode %d reward %d.' % (episode, total_reward))
rewards.append(total_reward)
ale.reset_game()
average = sum(rewards) / len(rewards)
print('Average for %d episodes: %d' % (num_episodes, average))
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))
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
class Atari:
def __init__(self, rom_dir):
self.ale = ALEInterface()
# Set settings
self.ale.setInt("random_seed", 123)
self.frame_skip = 4
self.ale.setInt("frame_skip", self.frame_skip)
self.ale.setBool("display_screen", False)
self.ale.setBool("sound", True)
self.record_sound_for_user = True
self.ale.setBool("record_sound_for_user", self.record_sound_for_user)
# NOTE recording audio to file still works. But if both file recording and
# record_sound_for_user are enabled, then only the latter is done
# self.ale.setString("record_sound_filename", "")
# Get settings
self.ale.loadROM(rom_dir)
self.screen_width, self.screen_height = self.ale.getScreenDims()
self.legal_actions = self.ale.getLegalActionSet()
# Action count across all episodes
self.action_count = 0
self.start_time = time.time()
self.reset()
def reset(self):
self.ale.reset_game()
def take_action(self):
action = self.legal_actions[np.random.randint(self.legal_actions.size)]
self.ale.act(action)
self.action_count += 1
def print_fps(self, delta_t=500):
if self.action_count % delta_t == 0:
print '[atari.py] Frames/second: %f' % (
self.action_count / (time.time() - self.start_time))
print '[atari.py] Overall game frame count:', atari.action_count * atari.frame_skip
print '---------'
def get_image_and_audio(self):
np_data_image = np.zeros(self.screen_width * self.screen_height * 3,
dtype=np.uint8)
if self.record_sound_for_user:
np_data_audio = np.zeros(self.ale.getAudioSize(), dtype=np.uint8)
self.ale.getScreenRGBAndAudio(np_data_image, np_data_audio)
# Also supports independent audio queries if user desires:
# self.ale.getAudio(np_data_audio)
else:
np_data_audio = 0
self.ale.getScreenRGB(np_data_image)
return np.reshape(np_data_image,
(self.screen_height, self.screen_width,
3)), np.asarray(np_data_audio)
class emulator:
def __init__(self, rom_name, vis):
self.ale = ALEInterface()
self.max_frames_per_episode = self.ale.getInt("max_mum_frames_per_episode")
self.ale.setInt("random_seed", 123)
self.ale.setInt("frame_skip", 4)
self.ale.loadROM('roms/' + rom_name)
self.legal_actions = self.ale.getMinimalActionSet()
self.action_map = dict()
for i in range(len(self.legal_actions)):
self.action_map[self.legal_actions[i]] = i
print self.legal_actions
self.screen_width, self.screen_height = self.ale.getScreenDims()
print("width/height: "+ str(self.screen_width) + "/" + str(self.screen_height))
self.vis = vis
if vis:
cv2.startWindowThread()
cv2.namedWindow("preview")
def get_image(self):
# numpy_surface = np.zeros(self.screen_height*self.screen_width*3, dtype=np.uint8)
# self.ale.getScreenRGB(numpy_surface)
# image = np.reshape(numpy_surface, (self.screen_height, self.screen_width, 3))
image = self.ale.getScreenRGB()
image = np.reshape(image, (self.screen_height, self.screen_width, 3))
return image
def newGame(self):
self.ale.reset_game()
return self.get_image(), 0, False
def next(self, action_indx):
reward = self.ale.act(action_indx)
nextstate = self.get_image()
if self.vis:
cv2.imshow('preview', nextstate)
return nextstate, reward, self.ale.game_over()
def train(self):
for episode in range(10):
total_reward = 0
frame_number = 0
while not self.ale.game_over():
a = self.legal_actions[random.randrange(len(self.legal_actions))]
# Apply an action and get the resulting reward
reward = self.ale.act(a);
total_reward += reward
screen = self.ale.getScreenRGB()
screen = np.array(screen).reshape([self.screen_height, self.screen_width, -1])
frame_number = self.ale.getEpisodeFrameNumber()
cv2.imshow("screen", screen/255.0)
cv2.waitKey(0)
self.ale.saveScreenPNG("test_"+str(frame_number)+".png")
print('Episode %d ended with score: %d' % (episode, total_reward))
print('Frame number is : ', frame_number)
self.ale.reset_game()
class AtariEnvironment(Environment):
"""
Atari Environment Object
"""
def __init__(self,
rom_path,
action_repeat=4,
death_end=True,
width_resize=84,
height_resize=84,
resize_mod='scale'):
super(Environment, self).__init__()
self.action_repeat = action_repeat
self.death_end = death_end
self.width_resize = width_resize
self.height_resize = height_resize
self.resize_mod = resize_mod
self.display = False
from ale_python_interface import ALEInterface
self.ale = ALEInterface()
self.ale.loadROM(rom_path)
self.ale.setInt('random_seed', np.random.randint(1000))
self.ale.setBool('display_screen', self.display)
self.action_set = self.ale.getMinimalActionSet()
self.num_actions = len(self.action_set)
self.start_lives = self.ale.lives()
width, height = self.ale.getScreenDims()
self.currentScreen = np.empty((height, width), dtype=np.uint8)
self.reset()
def reset(self):
self.ale.reset_game()
self.ale.getScreenGrayscale(self.currentScreen)
self.terminal = False
def step(self, action, repeat=None):
repeat = self.action_repeat if repeat is None else repeat
reward = 0
for _ in range(repeat):
reward += self.ale.act(self.action_set[action])
self.ale.getScreenGrayscale(self.currentScreen)
self.terminal = self.death_end and self.ale.lives(
) < self.start_lives or self.ale.game_over()
return reward
def get_frame(self):
if self.resize_mod == 'scale':
return imresize(self.currentScreen,
(self.width_resize, self.height_resize),
interp='bilinear')
elif self.resize_mod == 'crop':
height, width = self.currentScreen.shape
res = (height - width) / 2
crop = self.currentScreen[res:(res + width), :]
return imresize(crop, (self.width_resize, self.height_resize),
interp='bilinear')
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, rom_name, vis, windowname='preview'):
self.ale = ALEInterface()
self.max_frames_per_episode = self.ale.getInt(
"max_num_frames_per_episode")
self.ale.setInt("random_seed", 123)
self.ale.setInt("frame_skip", 4)
self.ale.loadROM('roms/' + rom_name)
self.legal_actions = self.ale.getMinimalActionSet()
self.action_map = dict()
self.windowname = windowname
for i in range(len(self.legal_actions)):
self.action_map[self.legal_actions[i]] = i
self.init_frame_number = 0
# print(self.legal_actions)
self.screen_width, self.screen_height = self.ale.getScreenDims()
print("width/height: " + str(self.screen_width) + "/" +
str(self.screen_height))
self.vis = vis
if vis:
cv2.startWindowThread()
cv2.namedWindow(self.windowname)
def get_image(self):
numpy_surface = np.zeros(self.screen_height * self.screen_width * 3,
dtype=np.uint8)
self.ale.getScreenRGB(numpy_surface)
image = np.reshape(numpy_surface,
(self.screen_height, self.screen_width, 3))
return image
def newGame(self):
# Instead of resetting the game, we load a checkpoint and start from there.
# self.ale.reset_game()
self.ale.restoreState(
self.ale.decodeState(checkpoints[random.randint(
0, 99)].astype('uint8')))
self.init_frame_number = self.ale.getFrameNumber()
#self.ale.restoreState(self.ale.decodeState(np.reshape(checkpoint,(1009,1))))
return self.get_image()
def next(self, action_indx):
reward = self.ale.act(action_indx)
nextstate = self.get_image()
# scipy.misc.imsave('test.png',nextstate)
if self.vis:
cv2.imshow(self.windowname, nextstate)
return nextstate, reward, self.ale.game_over()
def get_frame_number(self):
return self.ale.getFrameNumber() - self.init_frame_number
class Environment:
def __init__(self, show_screen, history_length):
self.ale = ALEInterface()
self.ale.setInt('frame_skip', 4)
self.history = None
self.history_length = history_length
if show_screen:
self.display_screen()
self.load_game()
(screen_width, screen_height) = self.ale.getScreenDims()
self.screen_data = np.empty((screen_height, screen_width, 1),
dtype=np.uint8) # 210x160 screen data
self.dims = (84, 84) # input size for neural network
self.actions = [3, 0, 1, 4] # noop, left, right, fire,
def display_screen(self):
self.ale.setBool("display_screen", True)
def turn_on_sound(self):
self.ale.setBool("sound", True)
def restart(self):
"""reset game"""
self.ale.reset_game()
def act(self, action):
""":returns reward of an action"""
return self.ale.act(self.actions[action])
def __get_screen(self):
""":returns Grayscale thresholded resized screen image """
self.ale.getScreenGrayscale(self.screen_data)
resized = cv2.resize(self.screen_data, self.dims)
return resized
def get_state(self):
binary_screen = self.__get_screen()
if self.history is None:
self.history = deque(maxlen=self.history_length)
for _ in range(self.history_length - 1):
self.history.append(binary_screen)
self.history.append(binary_screen)
result = np.stack(self.history, axis=0)
return result
def isTerminal(self):
"""checks if game is over"""
return self.ale.game_over()
def load_game(self):
"""load game from file"""
self.ale.loadROM("Breakout.bin")
class emulator(object):
def __init__(self, rom_name, vis, frameskip=1, windowname='preview'):
self.ale = ALEInterface()
self.max_frames_per_episode = self.ale.getInt(
"max_num_frames_per_episode")
self.ale.setInt("random_seed", 123)
self.ale.setInt("frame_skip", frameskip)
romfile = str(ROM_PATH) + str(rom_name)
if not os.path.exists(romfile):
print('No ROM file found at "' + romfile +
'".\nAdjust ROM_PATH or double-check the filt exists.')
self.ale.loadROM(romfile)
self.legal_actions = self.ale.getMinimalActionSet()
self.action_map = dict()
self.windowname = windowname
for i in range(len(self.legal_actions)):
self.action_map[self.legal_actions[i]] = i
# print(self.legal_actions)
self.screen_width, self.screen_height = self.ale.getScreenDims()
print("width/height: " + str(self.screen_width) + "/" +
str(self.screen_height))
self.vis = vis
if vis:
cv2.startWindowThread()
cv2.namedWindow(
self.windowname,
flags=cv2.WINDOW_AUTOSIZE) # permit manual resizing
def get_image(self):
numpy_surface = np.zeros(self.screen_height * self.screen_width * 3,
dtype=np.uint8)
self.ale.getScreenRGB(numpy_surface)
image = np.reshape(numpy_surface,
(self.screen_height, self.screen_width, 3))
return image
def newGame(self):
self.ale.reset_game()
return self.get_image()
def next(self, action_indx):
reward = self.ale.act(action_indx)
nextstate = self.get_image()
# scipy.misc.imsave('test.png',nextstate)
if self.vis:
cv2.imshow(self.windowname, nextstate)
if sys.platform == 'darwin':
# if we don't do this, can hang on OS X
cv2.waitKey(2)
return nextstate, reward, self.ale.game_over()
class Environment:
def __init__(self, show_screen, history_length):
self.ale = ALEInterface()
self.ale.setInt('frame_skip', 4)
self.history = None
self.history_length = history_length
if show_screen:
self.display_screen()
self.load_game()
(screen_width, screen_height) = self.ale.getScreenDims()
self.screen_data = np.empty((screen_height, screen_width, 1), dtype=np.uint8) # 210x160 screen data
self.dims = (84, 84) # input size for neural network
self.actions = [3, 0, 1, 4] # noop, left, right, fire,
def display_screen(self):
self.ale.setBool("display_screen", True)
def turn_on_sound(self):
self.ale.setBool("sound", True)
def restart(self):
"""reset game"""
self.ale.reset_game()
def act(self, action):
""":returns reward of an action"""
return self.ale.act(self.actions[action])
def __get_screen(self):
""":returns Grayscale thresholded resized screen image """
self.ale.getScreenGrayscale(self.screen_data)
resized = cv2.resize(self.screen_data, self.dims)
return resized
def get_state(self):
binary_screen = self.__get_screen()
if self.history is None:
self.history = deque(maxlen=self.history_length)
for _ in range(self.history_length - 1):
self.history.append(binary_screen)
self.history.append(binary_screen)
result = np.stack(self.history, axis=0)
return result
def isTerminal(self):
"""checks if game is over"""
return self.ale.game_over()
def load_game(self):
"""load game from file"""
self.ale.loadROM("Breakout.bin")
class Atari:
# Constructor
def __init__(self, rom_name):
# 1º Passo: carregamos o jogo e definimos seus parâmetros
self.ale = ALEInterface()
self.max_frames_per_episode = self.ale.getInt(
b"max_num_frames_per_episode")
self.ale.setInt(b"random_seed", 123)
self.ale.setInt(b"frame_skip", 4)
self.ale.loadROM(('game/' + rom_name).encode())
self.screen_width, self.screen_height = self.ale.getScreenDims()
self.legal_actions = self.ale.getMinimalActionSet()
self.action_map = dict()
for i in range(len(self.legal_actions)):
self.action_map[self.legal_actions[i]] = i
# 2º Passo: criamos a janela para exibição
self.windowname = rom_name
cv2.startWindowThread()
cv2.namedWindow(rom_name)
# Essa função será utilizada para receber uma imagem do emulador, já em um formato esperado
# por nosso algoritmo de treinamento.
def get_image(self):
numpy_surface = np.zeros(self.screen_height * self.screen_width * 3,
dtype=np.uint8)
self.ale.getScreenRGB(numpy_surface)
image = np.reshape(numpy_surface,
(self.screen_height, self.screen_width, 3))
return image
# Simplesmente inicializa o jogo
def newGame(self):
self.ale.reset_game()
return self.get_image()
# Essa função será responsável por retornar as informações da observação do estado após certa ação ser tomada.
def next(self, action):
reward = self.ale.act(self.legal_actions[np.argmax(action)])
nextstate = self.get_image()
cv2.imshow(self.windowname, nextstate)
if self.ale.game_over():
self.newGame()
return nextstate, reward, self.ale.game_over()
class emulator:
def __init__(self, rom_name, vis,windowname='preview'):
self.ale = ALEInterface()
self.max_frames_per_episode = self.ale.getInt("max_num_frames_per_episode");
self.ale.setInt("random_seed",123)
self.ale.setInt("frame_skip",4)
self.ale.loadROM('roms/' + rom_name )
self.legal_actions = self.ale.getMinimalActionSet()
self.action_map = dict()
self.windowname = windowname
for i in range(len(self.legal_actions)):
self.action_map[self.legal_actions[i]] = i
self.init_frame_number = 0
# print(self.legal_actions)
self.screen_width,self.screen_height = self.ale.getScreenDims()
print("width/height: " +str(self.screen_width) + "/" + str(self.screen_height))
self.vis = vis
if vis:
cv2.startWindowThread()
cv2.namedWindow(self.windowname)
def get_image(self):
numpy_surface = np.zeros(self.screen_height*self.screen_width*3, dtype=np.uint8)
self.ale.getScreenRGB(numpy_surface)
image = np.reshape(numpy_surface, (self.screen_height, self.screen_width, 3))
return image
def newGame(self):
# Instead of resetting the game, we load a checkpoint and start from there.
# self.ale.reset_game()
self.ale.restoreState(self.ale.decodeState(checkpoints[random.randint(0,99)].astype('uint8')))
self.init_frame_number = self.ale.getFrameNumber()
#self.ale.restoreState(self.ale.decodeState(np.reshape(checkpoint,(1009,1))))
return self.get_image()
def next(self, action_indx):
reward = self.ale.act(action_indx)
nextstate = self.get_image()
# scipy.misc.imsave('test.png',nextstate)
if self.vis:
cv2.imshow(self.windowname,nextstate)
return nextstate, reward, self.ale.game_over()
def get_frame_number(self):
return self.ale.getFrameNumber() - self.init_frame_number
class Emulator:
def __init__(self, rom_name, vis):
self.ale = ALEInterface()
self.max_frames_per_episode = self.ale.getInt(
"max_num_frames_per_episode")
self.ale.setInt("random_seed", 123)
self.ale.setInt("frame_skip", 4)
self.ale.loadROM('roms/' + rom_name)
self.legal_actions = self.ale.getMinimalActionSet()
self.action_map = dict()
for i in range(len(self.legal_actions)):
self.action_map[self.legal_actions[i]] = i
#print(self.legal_actions)
self.screen_width, self.screen_height = self.ale.getScreenDims()
print("width/height: " + str(self.screen_width) + "/" +
str(self.screen_height))
self.vis = vis
if vis:
cv2.startWindowThread()
cv2.namedWindow("preview")
def get_image(self):
numpy_surface = np.zeros(self.screen_height * self.screen_width * 3,
dtype=np.uint8)
self.ale.getScreenRGB(numpy_surface)
image = np.reshape(numpy_surface,
(self.screen_height, self.screen_width, 3))
#added by ben may 2016
print image
print '&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& printing'
return image
def newGame(self):
self.ale.reset_game()
return self.get_image()
def next(self, action_indx):
reward = self.ale.act(action_indx)
nextstate = self.get_image()
# scipy.misc.imsave('test.png',nextstate)
# scipy.misc.imsave('test.png',nextstate)
if self.vis:
cv2.imshow('preview', nextstate)
return nextstate, reward, self.ale.game_over()
class emulator:
def __init__(self, rom_name, vis, windowname='preview'):
self.ale = ALEInterface()
# When it starts
self.ale.setInt("random_seed", 123)
# Skipping 4 frames
self.ale.setInt("frame_skip", 4)
self.ale.loadROM('roms/' + rom_name)
self.legal_actions = self.ale.getMinimalActionSet()
print('Actions : %s' % self.legal_actions)
self.action_map = dict()
self.windowname = windowname
# Raw atari frames, 210 * 160 pixel images
self.screen_width, self.screen_height = self.ale.getScreenDims()
print("widht/height: " + str(self.screen_width) + "/" + str(self.screen_height))
# Visualize
self.vis = vis
if vis:
cv2.startWindowThread()
cv2.namedWindow(self.windowname)
def get_image(self):
# Need to specify data type as uint8
numpy_surface = np.zeros([self.screen_width * self.screen_height * 3], dtype=np.uint8)
# get RGB values
self.ale.getScreenRGB(numpy_surface)
image = np.reshape(numpy_surface, [self.screen_height, self.screen_width, 3])
return image
def new_game(self):
self.ale.reset_game()
# Reset game and getting reset image value
return self.get_image()
def next(self, action_index):
# Get R(s,a)
reward = self.ale.act(action_index)
# Get image pixel value after taking an action
next_state = self.get_image()
if self.vis:
cv2.imshow(self.windowname, next_state)
# self.ale.game_over() returns True when game is over
return next_state, reward, self.ale.game_over()
class Atari:
def __init__(self, rom_name):
self.ale = ALEInterface()
self.max_frames_per_episode = self.ale.getInt(
"max_num_frames_per_episode")
self.ale.setInt("random_seed", 123)
self.ale.setInt("frame_skip", 4)
self.ale.loadROM('game/' + rom_name)
self.screen_width, self.screen_height = self.ale.getScreenDims()
self.legal_actions = self.ale.getMinimalActionSet()
self.action_map = dict()
for i in range(len(self.legal_actions)):
self.action_map[self.legal_actions[i]] = i
# print len(self.legal_actions)
self.windowname = rom_name
cv2.startWindowThread()
cv2.namedWindow(rom_name)
def get_image(self):
numpy_surface = np.zeros(self.screen_height * self.screen_width * 3,
dtype=np.uint8)
self.ale.getScreenRGB(numpy_surface)
image = np.reshape(numpy_surface,
(self.screen_height, self.screen_width, 3))
return image
def newGame(self):
self.ale.reset_game()
return self.get_image()
def next(self, action):
reward = self.ale.act(self.legal_actions[np.argmax(action)])
nextstate = self.get_image()
cv2.imshow(self.windowname, nextstate)
if self.ale.game_over():
self.newGame()
# print "reward %d" % reward
return nextstate, reward, self.ale.game_over()
class Atari:
def __init__(self,rom_name):
self.ale = ALEInterface()
self.max_frames_per_episode = self.ale.getInt("max_num_frames_per_episode")
self.ale.setInt("random_seed",123)
self.ale.setInt("frame_skip",4)
self.ale.loadROM(rom_name)
self.screen_width,self.screen_height = self.ale.getScreenDims()
self.legal_actions = self.ale.getMinimalActionSet()
self.action_map = dict()
for i in range(len(self.legal_actions)):
self.action_map[self.legal_actions[i]] = i
print len(self.legal_actions)
self.windowname = rom_name
cv2.startWindowThread()
cv2.namedWindow(rom_name)
def preprocess(self, image):
image = cv2.cvtColor(cv2.resize(image, (84, 110)), cv2.COLOR_BGR2GRAY)
image = image[26:110,:]
ret, image = cv2.threshold(image,1,255,cv2.THRESH_BINARY)
return np.reshape(image,(84,84, 1))
def get_image(self):
numpy_surface = np.zeros(self.screen_height*self.screen_width*3, dtype=np.uint8)
self.ale.getScreenRGB(numpy_surface)
image = np.reshape(numpy_surface, (self.screen_height, self.screen_width, 3))
return self.preprocess(image)
def newGame(self):
self.ale.reset_game()
return self.get_image()
def next(self, action):
reward = self.ale.act(self.legal_actions[np.argmax(action)])
nextstate = self.get_image()
cv2.imshow(self.windowname,nextstate)
if self.ale.game_over():
self.newGame()
#print "reward %d" % reward
return nextstate, reward, self.ale.game_over()
class emulator:
def __init__(self, rom_name, vis):
if vis:
import cv2
self.ale = ALEInterface()
self.max_frames_per_episode = self.ale.getInt("max_num_frames_per_episode");
self.ale.setInt("random_seed",123)
self.ale.setInt("frame_skip",4)
self.ale.loadROM('roms/' + rom_name )
self.legal_actions = self.ale.getMinimalActionSet()
self.action_map = dict()
for i in range(len(self.legal_actions)):
self.action_map[self.legal_actions[i]] = i
# print(self.legal_actions)
self.screen_width,self.screen_height = self.ale.getScreenDims()
print("width/height: " +str(self.screen_width) + "/" + str(self.screen_height))
self.vis = vis
if vis:
cv2.startWindowThread()
cv2.namedWindow("preview")
def get_image(self):
numpy_surface = np.zeros(self.screen_height*self.screen_width*3, dtype=np.uint8)
self.ale.getScreenRGB(numpy_surface)
image = np.reshape(numpy_surface, (self.screen_height, self.screen_width, 3))
return image
def newGame(self):
self.ale.reset_game()
return self.get_image()
def next(self, action_indx):
reward = self.ale.act(action_indx)
nextstate = self.get_image()
# scipy.misc.imsave('test.png',nextstate)
if self.vis:
cv2.imshow('preview',nextstate)
return nextstate, reward, self.ale.game_over()
class Atari:
def __init__(self,rom_name):
self.ale = ALEInterface()
self.max_frames_per_episode = self.ale.getInt("max_num_frames_per_episode")
self.ale.setInt("random_seed",123)
self.ale.setInt("frame_skip",4)
self.ale.loadROM('./' +rom_name)
self.screen_width,self.screen_height = self.ale.getScreenDims()
self.legal_actions = self.ale.getMinimalActionSet()
self.action_map = dict()
for i in range(len(self.legal_actions)):
self.action_map[self.legal_actions[i]] = i
#print len(self.legal_actions)
self.windowname = rom_name
#cv2.startWindowThread()
#cv2.namedWindow(rom_name)
def get_image(self):
numpy_surface = np.zeros(self.screen_height*self.screen_width*3, dtype=np.uint8)
self.ale.getScreenRGB(numpy_surface)
image = np.reshape(numpy_surface, (self.screen_height, self.screen_width, 3))
return image
def newGame(self):
self.ale.reset_game()
return self.get_image()
def next(self, action):
reward = self.ale.act(self.legal_actions[np.argmax(action)])
nextstate = self.get_image()
#cv2.imshow(self.windowname,nextstate)
if self.ale.game_over():
self.newGame()
#print "reward %d" % reward
return nextstate, reward, self.ale.game_over()
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)
# ale.setBool('sound', True)
# ale.setBool('display_screen', True)
# Load the ROM file
ale.loadROM('Breakout.bin')
# Get the list of legal actions
# legal_actions = ale.getLegalActionSet()
legal_actions = ale.getMinimalActionSet()
print legal_actions
# (screen_width,screen_height) = ale.getScreenDims()
# screen_data = np.zeros(screen_width*screen_height,dtype=np.uint32)
# ale.getScreenRGB(screen_data)
(screen_width, screen_height) = ale.getScreenDims()
screen_data = np.zeros(screen_width * screen_height, dtype=np.uint8)
print type(ale.getScreen(screen_data))
# Play 10 episodes
for episode in xrange(10):
total_reward = 0
while not ale.game_over():
a = legal_actions[randrange(len(legal_actions))]
# Apply an action and get the resulting reward
reward = ale.act(a)
print reward
total_reward += reward
print 'Episode', episode, 'ended with score:', total_reward
ale.reset_game()
class ArcadeLearningEnvironment(Environment):
"""
[Arcade Learning Environment](https://github.com/mgbellemare/Arcade-Learning-Environment)
adapter (specification key: `ale`, `arcade_learning_environment`).
May require:
```bash
sudo apt-get install libsdl1.2-dev libsdl-gfx1.2-dev libsdl-image1.2-dev cmake
git clone https://github.com/mgbellemare/Arcade-Learning-Environment.git
cd Arcade-Learning-Environment
mkdir build && cd build
cmake -DUSE_SDL=ON -DUSE_RLGLUE=OFF -DBUILD_EXAMPLES=ON ..
make -j 4
cd ..
pip3 install .
```
Args:
level (string): ALE rom file
(<span style="color:#C00000"><b>required</b></span>).
loss_of_life_termination: Signals a terminal state on loss of life
(<span style="color:#00C000"><b>default</b></span>: false).
loss_of_life_reward (float): Reward/Penalty on loss of life (negative values are a penalty)
(<span style="color:#00C000"><b>default</b></span>: 0.0).
repeat_action_probability (float): Repeats last action with given probability
(<span style="color:#00C000"><b>default</b></span>: 0.0).
visualize (bool): Whether to visualize interaction
(<span style="color:#00C000"><b>default</b></span>: false).
frame_skip (int > 0): Number of times to repeat an action without observing
(<span style="color:#00C000"><b>default</b></span>: 1).
seed (int): Random seed
(<span style="color:#00C000"><b>default</b></span>: none).
"""
def __init__(
self, level, life_loss_terminal=False, life_loss_punishment=0.0,
repeat_action_probability=0.0, visualize=False, frame_skip=1, seed=None
):
from ale_python_interface import ALEInterface
self.environment = ALEInterface()
self.rom_file = level
self.life_loss_terminal = life_loss_terminal
self.life_loss_punishment = life_loss_punishment
self.environment.setFloat(b'repeat_action_probability', repeat_action_probability)
self.environment.setBool(b'display_screen', visualize)
self.environment.setInt(b'frame_skip', frame_skip)
if seed is not None:
self.environment.setInt(b'random_seed', seed)
# All set commands must be done before loading the ROM.
self.environment.loadROM(rom_file=self.rom_file.encode())
self.available_actions = tuple(self.environment.getLegalActionSet())
# Full list of actions:
# No-Op, Fire, Up, Right, Left, Down, Up Right, Up Left, Down Right, Down Left, Up Fire,
# Right Fire, Left Fire, Down Fire, Up Right Fire, Up Left Fire, Down Right Fire, Down Left
# Fire
def __str__(self):
return super().__str__() + '({})'.format(self.rom_file)
def states(self):
width, height = self.environment.getScreenDims()
return dict(type='float', shape=(height, width, 3))
def actions(self):
return dict(type='int', num_values=len(self.available_actions))
def close(self):
self.environment.__del__()
self.environment = None
def get_states(self):
screen = np.copy(self.environment.getScreenRGB(screen_data=self.screen))
screen = screen.astype(dtype=np.float32) / 255.0
return screen
def reset(self):
self.environment.reset_game()
width, height = self.environment.getScreenDims()
self.screen = np.empty((height, width, 3), dtype=np.uint8)
self.lives = self.environment.lives()
return self.get_states()
def execute(self, actions):
reward = self.environment.act(action=self.available_actions[actions])
terminal = self.environment.game_over()
states = self.get_states()
next_lives = self.environment.lives()
if next_lives < self.lives:
if self.life_loss_terminal:
terminal = True
elif self.life_loss_punishment > 0.0:
reward -= self.life_loss_punishment
self.lives = next_lives
return states, terminal, reward
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 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 UpdatedAtariEnv(AtariEnv):
def __init__(self,
rom_path,
obs_type,
frameskip=(2, 5),
repeat_action_probability=0.,
mode=0,
difficulty=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, rom_path, obs_type)
assert obs_type in ('ram', 'image')
self.rom_path = rom_path
if not os.path.exists(self.rom_path):
raise IOError('You asked for ROM %s but path %s does not exist' %
(game, self.game_path))
self._obs_type = obs_type
self.frameskip = frameskip
# Load new ALE interface, instead of atari-py
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()
# Set mode and difficulty
self.ale.setMode(mode)
self.ale.setDifficulty(difficulty)
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=0, high=255, shape=(128, ))
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 seed(self, seed=None):
self.np_random, seed1 = seeding.np_random(seed)
# Derive a random seed. This gets passed as a uint, but gets
# checked as an int elsewhere, so we need to keep it below
# 2**31.
seed2 = seeding.hash_seed(seed1 + 1) % 2**31
# Empirically, we need to seed before loading the ROM.
self.ale.setInt(b'random_seed', seed2)
# Load game from ROM instead of game path
self.ale.loadROM(self.rom_path)
return [seed1, seed2]
def _get_image(self):
return self.ale.getScreenRGB()
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 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
class AtariEmulator(BaseEnvironment):
def __init__(self,
emulator_id,
game,
resource_folder,
random_seed=3,
random_start=True,
single_life_episodes=False,
history_window=1,
visualize=False,
verbose=0,
**unknown):
if verbose >= 2:
logging.debug('Emulator#{} received unknown args: {}'.format(
emulator_id, unknown))
self.emulator_id = emulator_id
self.ale = ALEInterface()
self.ale.setInt(b"random_seed", random_seed * (emulator_id + 1))
# 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)
self.ale.setBool(b"display_screen", visualize)
full_rom_path = resource_folder + "/" + game + ".bin"
self.ale.loadROM(str.encode(full_rom_path))
self.legal_actions = self.ale.getMinimalActionSet()
#this env is fixed until firing, so you have to...
self._have_to_fire = ('FIRE' in [
ACTION_MEANING[a] for a in self.legal_actions
])
self.screen_width, self.screen_height = self.ale.getScreenDims()
self.lives = self.ale.lives()
self.random_start = random_start
self.single_life_episodes = single_life_episodes
self.call_on_new_frame = visualize
self.history_window = history_window
self.observation_shape = (self.history_window, IMG_SIZE_X, IMG_SIZE_Y)
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)
# Processed historcal frames that will be fed in to the network (i.e., four 84x84 images)
self.history = create_history_observation(self.history_window)
#ObservationPool(np.zeros(self.observation_shape, dtype=np.uint8))
self.frame_preprocessor = FramePreprocessor(self.gray_screen.shape,
FRAMES_IN_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 self.gray_screen
def on_new_frame(self, frame):
pass
def __random_start_reset(self):
""" Restart game """
self.ale.reset_game()
if self.random_start:
wait = random.randint(0, MAX_START_WAIT + 1)
for _ in range(wait):
self.ale.act(self.get_noop())
if self.__is_over():
self.ale.reset_game()
self.lives = self.ale.lives()
def __new_game(self):
self.__random_start_reset()
if self._have_to_fire:
#take action on reset for environments that are fixed until firing
self.ale.act(self.legal_actions[1])
if self.__is_over():
self.__random_start_reset()
self.ale.act(self.legal_actions[2])
if self.__is_over():
self.__random_start_reset()
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_preprocessor.new_frame(self.__get_screen_image())
return reward
def reset(self):
""" Get the initial state """
self.__new_game()
for step in range(self.history_window):
_ = self.__action_repeat(0)
self.history.new_observation(
self.frame_preprocessor.get_processed())
if self.__is_terminal():
raise Exception('This should never happen.')
return self.history.get_state(), None
def next(self, action):
""" Get the next state, reward, and game over signal """
reward = self.__action_repeat(action)
self.history.new_observation(self.frame_preprocessor.get_processed())
terminal = self.__is_terminal()
self.lives = self.ale.lives()
return self.history.get_state(), reward, terminal, None
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 self.legal_actions[0]
def close(self):
del self.ale
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()
pygame.init()
ale.setBool('sound', False) # Sound doesn't work on OSX
elif sys.platform.startswith('linux'):
ale.setBool('sound', FLAGS.sound)
ale.setBool('display_screen', FLAGS.display)
# Load the ROM file
rom_file = str.encode(FLAGS.rom)
ale.loadROM(rom_file)
# Get the list of legal actions
legal_actions = ale.getLegalActionSet()
minimal_actions = ale.getMinimalActionSet()
print "Legal Actions:", legal_actions
print "Minimal Actions:", minimal_actions
print "Screen size:", ale.getScreenDims()
# Play 10 episodes
for episode in range(10):
total_reward = 0
while not ale.game_over():
a = legal_actions[randrange(len(legal_actions))]
# Apply an action and get the resulting reward
reward = ale.act(a);
total_reward += reward
#print ale.getFrameNumber(), ale.getEpisodeFrameNumber(), reward, total_reward
print('Episode %d ended with score: %d' % (episode, total_reward))
ale.reset_game()
if __name__ == '__main__':
class AtariSimulator(object):
def __init__(self, settings):
'''Initiate Arcade Learning Environment (ALE) using Python interface
https://github.com/bbitmaster/ale_python_interface/wiki
- Set number of frames to be skipped, random seed, ROM and title for display.
- Retrieve a set of legal actions and their number.
- Retrieve dimensions of the original screen (width/height), and set the dimensions
of the cropped screen, together with the padding used to crop the screen rectangle.
- Set dimensions of the pygame display that will show visualization of the simulation.
(May be cropped --- showing what the learner sees, or not --- showing full Atari screen)
- Allocate memory for generated grayscale screenshots. Accepts dims in (height/width) format
'''
self.ale = ALEInterface()
self.ale.setInt("frame_skip",settings["frame_skip"])
self.ale.setInt("random_seed",settings["seed_simulator"])
self.ale.loadROM(settings["rom_dir"] + '/' + settings["rom"])
self.title = "ALE Simulator: " + str(settings["rom"])
self.actions = self.ale.getLegalActionSet()
self.n_actions = self.actions.size
self.screen_dims = self.ale.getScreenDims()
self.model_dims = settings['model_dims']
self.pad = settings['pad']
print("Original screen width/height: " + str(self.screen_dims[0]) + "/" + str(self.screen_dims[1]))
print("Cropped screen width/height: " + str(self.model_dims[0]) + "/" + str(self.model_dims[1]))
self.viz_cropped = settings['viz_cropped']
if self.viz_cropped:
self.display_dims = (int(self.model_dims[0]*2), int(self.model_dims[1]*2))
else:
self.display_dims = (int(self.screen_dims[0]*2), int(self.screen_dims[1]*2))
# preallocate an array to accept ALE screen data (height/width) !
self.screen_data = np.empty((self.screen_dims[1],self.screen_dims[0]),dtype=np.uint8)
def get_screenshot(self):
'''returns a cropped snapshot of the simulator
- store grayscale values in a preallocated array
- cut out a square from the rectangle, using provided padding value
- downsample to the desired size and transpose from (height/width) to (width/height)
'''
self.ale.getScreenGrayscale(self.screen_data)
self.tmp = self.screen_data[(self.screen_dims[1]-self.screen_dims[0]-self.pad):(self.screen_dims[1]-self.pad),:]
self.frame = spm.imresize(self.tmp,self.model_dims[::-1],interp='nearest').T #, interp='nearest'
return self.frame
def act(self,action_index):
'''function to transition the simulator from s to s' using provided action
the action that is provided is in form of an index
simulator deals with translating the index into an actual action'''
self.last_reward = self.ale.act(self.actions[action_index])
def reward(self):
'''return reward - has to be called after the "act" function'''
return self.last_reward
def episode_over(self):
'''return a boolean indicator on whether the game is still running'''
return self.ale.game_over()
def reset_episode(self):
'''reset the game that ended'''
self.ale.reset_game()
def init_viz_display(self):
'''initialize display that will show visualization'''
pygame.init()
self.screen = pygame.display.set_mode(self.display_dims)
if self.title:
pygame.display.set_caption(self.title)
def refresh_viz_display(self):
'''if display is shut down, shut the game down
else move the current simulator's frame (cropped or not cropped) into the pygame display,
after expanding it 2x along x and y dimensions'''
for event in pygame.event.get():
if event.type == pygame.QUIT:
exit
if self.viz_cropped:
self.surface = pygame.surfarray.make_surface(self.frame) # has already been transposed
else:
self.surface = pygame.surfarray.make_surface(self.screen_data.T)
self.screen.blit(pygame.transform.scale2x(self.surface),(0,0))
pygame.display.flip()
class ALE(Environment):
def __init__(self,
rom,
frame_skip=1,
repeat_action_probability=0.0,
loss_of_life_termination=False,
loss_of_life_reward=0,
display_screen=False,
seed=np.random.RandomState()):
"""
Initialize ALE.
Args:
rom: Rom filename and directory.
frame_skip: Repeat action for n frames. Default 1.
repeat_action_probability: Repeats last action with given probability. Default 0.
loss_of_life_termination: Signals a terminal state on loss of life. Default False.
loss_of_life_reward: Reward/Penalty on loss of life (negative values are a penalty). Default 0.
display_screen: Displays the emulator screen. Default False.
seed: Random seed
"""
self.ale = ALEInterface()
self.rom = rom
self.ale.setBool(b'display_screen', display_screen)
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.setInt(b'frame_skip', frame_skip)
# all set commands must be done before loading the ROM
self.ale.loadROM(rom.encode())
# setup gamescreen object
width, height = self.ale.getScreenDims()
self.gamescreen = np.empty((height, width, 3), dtype=np.uint8)
self.frame_skip = frame_skip
# 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_reward = loss_of_life_reward
self.cur_lives = self.ale.lives()
self.loss_of_life_termination = loss_of_life_termination
self.life_lost = False
def __str__(self):
return 'ALE({})'.format(self.rom)
def close(self):
self.ale = None
def reset(self):
self.ale.reset_game()
self.cur_lives = self.ale.lives()
self.life_lost = False
# clear gamescreen
self.gamescreen = np.empty(self.gamescreen.shape, dtype=np.uint8)
return self.current_state
def execute(self, action):
# convert action to ale action
ale_action = self.action_inds[action]
# get reward and process terminal & next state
rew = self.ale.act(ale_action)
if self.loss_of_life_termination or self.loss_of_life_reward != 0:
new_lives = self.ale.lives()
if new_lives < self.cur_lives:
self.cur_lives = new_lives
self.life_lost = True
rew += self.loss_of_life_reward
terminal = self.is_terminal
state_tp1 = self.current_state
return state_tp1, rew, terminal
@property
def states(self):
return dict(shape=self.gamescreen.shape, type=float)
@property
def actions(self):
return dict(continuous=False,
num_actions=len(self.action_inds),
names=self.action_names)
@property
def current_state(self):
self.gamescreen = self.ale.getScreenRGB(self.gamescreen)
return np.copy(self.gamescreen)
@property
def is_terminal(self):
if self.loss_of_life_termination and self.life_lost:
return True
else:
return self.ale.game_over()
@property
def action_names(self):
action_names = [
'No-Op', 'Fire', 'Up', 'Right', 'Left', 'Down', 'Up Right',
'Up Left', 'Down Right', 'Down Left', 'Up Fire', 'Right Fire',
'Left Fire', 'Down Fire', 'Up Right Fire', 'Up Left Fire',
'Down Right Fire', 'Down Left Fire'
]
return np.asarray(action_names)[self.action_inds]
class AtariWrapper():
"""
ALE wrapper that tries to mimic the options in the DQN paper including the
preprocessing (except resizing/cropping)
"""
action_words = [
'NOOP', 'UP', 'RIGHT', 'LEFT', 'DOWN', "UPRIGHT", "UPLEFT",
"DOWNRIGHT", "DOWNLEFT"
]
_action_set = [0, 2, 3, 4, 5, 6, 7, 8, 9]
#Valid actions for ALE.
#Possible actions are just a list from 0,num_valid_actions
#We still need to map from the latter to the former when
possible_actions = list(range(len(_action_set)))
def __init__(self,
rom_path,
seed=123,
frameskip=4,
show_display=False,
stack_num_states=4,
concatenate_state_every=4):
"""
Parameters:
Frameskip should be either a tuple (indicating a random range to
choose from, with the top value exclude), or an int. It's aka action repeat.
stack_num_states: Number of dimensions/channels to have.
concatenate_state_every: After how many frames should one channel be appended to state.
Number is in terms of absolute frames independent of frameskip
"""
self.stack_num_states = stack_num_states
self.concatenate_state_every = concatenate_state_every
self.game_path = rom_path
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.frameskip = frameskip
try:
self.ale = ALEInterface()
except Exception as e:
print(
"ALEInterface could not be loaded. ale_python_interface import failed"
)
raise e
#Set some default options
self.ale.setInt(b'random_seed', seed)
self.ale.setBool(b'sound', False)
self.ale.setBool(b'display_screen', show_display)
self.ale.setFloat(b'repeat_action_probability', 0.)
#Load the rom
self.ale.loadROM(self.game_path)
(self.screen_width, self.screen_height) = self.ale.getScreenDims()
self.latest_frame_fifo = deque(
maxlen=2) #Holds the two closest frames to max.
self.state_fifo = deque(maxlen=stack_num_states)
def _step(self, a, force_noop=False):
"""Perform one step of the environment.
Automatically repeats the step self.frameskip number of times
parameters:
force_noop: Force it to perform a no-op ignoring the action supplied.
"""
assert a in self.possible_actions + [0]
if force_noop:
action, num_steps = 0, 1
else:
action = self._action_set[a]
if isinstance(self.frameskip, int):
num_steps = self.frameskip
else:
num_steps = np.random.randint(self.frameskip[0], self.frameskip[1])
reward = 0.0
for i in range(num_steps):
reward += self.ale.act(action)
cur_frame = self.observe_raw(get_rgb=True)
cur_frame_cropped = self.crop_frame(cur_frame)
self.latest_frame_fifo.append(cur_frame_cropped)
if i % self.concatenate_state_every == 0:
curmax_frame = np.amax(self.latest_frame_fifo, axis=0)
frame_lumi = self.convert_to_gray(curmax_frame)
self.state_fifo.append(frame_lumi)
#Transpose so we get HxWxC instead of CxHxW
self.current_frame = np.array(np.transpose(self.state_fifo, (1, 2, 0)))
return self.current_frame, reward, self.ale.game_over(), {
"ale.lives": self.ale.lives()
}
def step(self, *args, **kwargs):
"""Performs one step of the environment
"""
lives_before = self.ale.lives()
next_state, reward, done, info = self._step(*args, **kwargs)
lives_after = self.ale.lives()
# End the episode when a life is lost
if lives_before > lives_after:
done = True
return next_state, reward, done, info
def observe_raw(self, get_rgb=False):
"""Observe either RGB or Gray frames.
Initialzing arrays forces it to not modify stale pointers
"""
if get_rgb:
cur_frame_rgb = np.zeros(
(self.screen_height, self.screen_width, 3), dtype=np.uint8)
self.ale.getScreenRGB(cur_frame_rgb)
return cur_frame_rgb
else:
cur_frame_gray = np.zeros((self.screen_height, self.screen_width),
dtype=np.uint8)
self.ale.getScreenGrayscale(cur_frame_gray)
return cur_frame_gray
def crop_frame(self, frame):
"""Simply crops a frame. Does nothing by default.
"""
return frame
def convert_to_gray(self, img):
"""Get Luminescence channel
"""
img_f = np.float32(img)
img_lumi = 0.299*img_f[:,:,0] + \
0.587*img_f[:,:,1] + \
0.114*img_f[:,:,2]
return np.uint8(img_lumi)
def reset(self):
"""Reset the game
"""
self.ale.reset_game()
s = self.observe_raw(get_rgb=True)
s = self.crop_frame(s)
#Populate missing frames with blank ones.
for _ in range(self.stack_num_states - 1):
self.state_fifo.append(np.zeros(shape=(s.shape[0], s.shape[1])))
self.latest_frame_fifo.append(s)
#Push the latest frame
curmax_frame = s
frame_lumi = self.convert_to_gray(s)
self.state_fifo.append(frame_lumi)
self.state = np.transpose(self.state_fifo, (1, 2, 0))
return self.state
def get_action_meanings(self):
"""Return in text what the actions correspond to.
"""
return [ACTION_MEANING[i] for i in self._action_set]
def save_state(self):
"""Saves the current state and returns a identifier to saved state
"""
return self.ale.cloneSystemState()
def restore_state(self, ident):
"""Restore game state
Restores the saved state of the system and perform a no-op
so a new frame can be generated incase a restore is followed
by an observe()
"""
self.ale.restoreSystemState(ident)
self.step(0, force_noop=True)
if USE_SDL:
if sys.platform == 'darwin':
import pygame
print "!!!"
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.setInt('frame_skip',1)
# Load the ROM file
ale.loadROM('roms/breakout.bin')
ale.setInt('max_num_frames',1)
# Get the list of legal actions
legal_actions = ale.getMinimalActionSet()
a1,a2 = ale.getScreenDims()
cnt = 0
# Play 10 episodes
import numpy as np
d = np.empty((a1,a2),dtype=np.uint8)
for episode in xrange(10):
total_reward = 0
while not ale.game_over():
a = legal_actions[randrange(len(legal_actions))]
#print legal_actions
# Apply an action and get the resulting reward
reward = ale.act(a);
ale.getScreenGrayscale(d)
io.imshow(d)
io.show()
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 AleAgent:
##
# @param processing_cls Class for processing game visual unput
def __init__(self, processing_cls, game_rom=None, encoder_model=None, encoder_weights=None, NFQ_model=None, NFQ_weights=None):
assert game_rom is not None
self.game = ALEInterface()
if encoder_weights is not None and encoder_model is not None:
self.encoder = Encoder(path_to_model=encoder_model, path_to_weights=encoder_weights)
else:
self.encoder = Encoder()
self.processor = processing_cls()
# Get & Set the desired settings
self.game.setInt('random_seed', 0)
self.game.setInt('frame_skip', 4)
# 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 = True
if USE_SDL:
if sys.platform == 'darwin':
pygame.init()
self.game.setBool('sound', False) # Sound doesn't work on OSX
elif sys.platform.startswith('linux'):
self.game.setBool('sound', False) # no sound
self.game.setBool('display_screen', True)
# Load the ROM file
self.game.loadROM(game_rom)
# Get the list of legal actions
self.legal_actions = self.game.getLegalActionSet()
# Get actions applicable in current game
self.minimal_actions = self.game.getMinimalActionSet()
if NFQ_model is not None and NFQ_weights is not None:
self.NFQ = NFQ(
self.encoder.out_dim,
len(self.minimal_actions),
model_path=NFQ_model,
weights_path=NFQ_weights
)
else:
self.NFQ = NFQ(self.encoder.out_dim, len(self.minimal_actions))
(self.screen_width, self.screen_height) = self.game.getScreenDims()
self.screen_data = np.zeros(
(self.screen_height, self.screen_width),
dtype=np.uint8
)
##
# Initialize the reinforcement learning
def train(self, num_of_episodes=1500, eps=0.995, key_binding=None):
pygame.init()
for episode in xrange(num_of_episodes):
total_reward = 0
moves = 0
hits = 0
print 'Starting episode: ', episode+1
if key_binding:
eps = 0.05
else:
eps -= 2/num_of_episodes
self.game.getScreenGrayscale(self.screen_data)
pooled_data = self.processor.process(self.screen_data)
next_state = self.encoder.encode(pooled_data)
while not self.game.game_over():
current_state = next_state
x = None
if key_binding:
key_pressed = pygame.key.get_pressed()
x = key_binding(key_pressed)
if x is None:
r = np.random.rand()
if r < eps:
x = np.random.randint(self.minimal_actions.size)
else:
x = self.NFQ.predict_action(current_state)
a = self.minimal_actions[x]
# Apply an action and get the resulting reward
reward = self.game.act(a)
# record only every 3 frames
# if not moves % 3:
self.game.getScreenGrayscale(self.screen_data)
pooled_data = self.processor.process(self.screen_data)
next_state = self.encoder.encode(pooled_data)
transition = np.append(current_state, x)
transition = np.append(transition, next_state)
transition = np.append(transition, reward)
self.NFQ.add_transition(transition)
total_reward += reward
if reward > 0:
hits += 1
moves += 1
if eps > 0.1:
eps -= 0.00001
# end while
print 'Epsilon: ', eps
print 'Episode', episode+1, 'ended with score:', total_reward
print 'Hits: ', hits
self.game.reset_game()
self.NFQ.train()
hits = 0
moves = 0
self.NFQ.save_net()
# end for
##
# Play the game!
def play(self):
total_reward = 0
moves = 1
while not self.game.game_over():
self.game.getScreenGrayscale(self.screen_data)
pooled_data = self.processor.process(self.screen_data)
current_state = self.encoder.encode(pooled_data)
x = self.NFQ.predict_action(current_state)
a = self.minimal_actions[x]
reward = self.game.act(a)
total_reward += reward
moves += 1
print 'The game ended with score:', total_reward, ' after: ', moves, ' moves'
def main():
if len(sys.argv) < 2:
dir_rom = '/Users/lguan/Documents/Study/Research/Atari-2600-Roms/T-Z/Tennis.bin'
else:
dir_rom = sys.argv[1]
ale = ALEInterface()
# Get & Set the desired settings
ale.setInt(b'random_seed', 123)
# 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:
# mac OS
if sys.platform == 'darwin':
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
rom_file = str.encode(dir_rom)
print('- Loading ROM - %s' % dir_rom)
ale.loadROM(rom_file)
print('- Complete loading ROM')
(game_surface_width, game_surface_height) = ale.getScreenDims()
print("game surface width/height: "
+ str(game_surface_width) + "/"
+ str(game_surface_height))
(display_width, display_height) = (800, 640)
print 'display width/height', (display_width, display_height)
# init pygame
pygame.init()
display_screen = pygame.display.set_mode((display_width, display_height))
pygame.display.set_caption("Arcade Learning Environment Player Agent Display")
# init clock
clock = pygame.time.Clock()
is_exit = False
# Play 10 episodes
for episode in range(10):
if is_exit:
break
total_reward = 0
while not ale.game_over() and not is_exit:
a = getActionFromKeyboard()
# Apply an action and get the resulting reward
reward = ale.act(a)
total_reward += reward
# clear screen
display_screen.fill((0, 0, 0))
# render game surface
renderGameSurface(ale, display_screen, (game_surface_width, game_surface_height))
# display related info
displayRelatedInfo(display_screen, a, total_reward)
pygame.display.flip()
# process pygame event queue
for event in pygame.event.get():
if event.type == pygame.QUIT:
is_exit = True
break
if event.type == pygame.KEYDOWN and event.key == pygame.K_q:
is_exit = True
break
# delay to 60fps
clock.tick(60.)
print('Episode %d ended with score: %d' % (episode, total_reward))
ale.reset_game()
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 AtariEnvironment(interfaces.Environment):
def __init__(self,
atari_rom,
frame_skip=4,
noop_max=30,
terminate_on_end_life=False,
random_seed=123,
frame_history_length=4,
use_gui=False,
max_num_frames=500000,
repeat_action_probability=0.0,
record_screen_dir=None):
self.ale = ALEInterface()
self.ale.setInt('random_seed', random_seed)
self.ale.setInt('frame_skip', 1)
self.ale.setFloat('repeat_action_probability', 0.0)
self.ale.setInt('max_num_frames_per_episode', max_num_frames)
if record_screen_dir is not None:
self.ale.setString('record_screen_dir', record_screen_dir)
self.ale.loadROM(atari_rom)
self.frame_skip = frame_skip
self.repeat_action_probability = repeat_action_probability
self.noop_max = noop_max
self.terminate_on_end_life = terminate_on_end_life
self.current_lives = self.ale.lives()
self.is_terminal = False
self.previous_action = 0
self.num_actions = len(self.ale.getMinimalActionSet())
w, h = self.ale.getScreenDims()
self.screen_width = w
self.screen_height = h
self.zero_last_frames = [
np.zeros((84, 84), dtype=np.uint8),
np.zeros((84, 84), dtype=np.uint8)
]
self.last_two_frames = copy.copy(self.zero_last_frames)
self.zero_history_frames = [
np.zeros((84, 84), dtype=np.uint8)
for i in range(0, frame_history_length)
]
self.frame_history = copy.copy(self.zero_history_frames)
atari_actions = self.ale.getMinimalActionSet()
self.atari_to_onehot = dict(
list(zip(atari_actions, list(range(len(atari_actions))))))
self.onehot_to_atari = dict(
list(zip(list(range(len(atari_actions))), atari_actions)))
self.screen_image = np.zeros(self.screen_height * self.screen_width,
dtype=np.uint8)
self.use_gui = use_gui
self.original_frame = np.zeros((h, w), dtype=np.uint8)
self.refresh_time = datetime.timedelta(milliseconds=1000 / 60)
self.last_refresh = datetime.datetime.now()
if (self.use_gui):
self.gui_screen = pygame.display.set_mode((w, h))
def getRAM(self, ram=None):
return self.ale.getRAM(ram)
def _get_frame(self):
self.ale.getScreenGrayscale(self.screen_image)
image = self.screen_image.reshape(
[self.screen_height, self.screen_width, 1])
self.original_frame = image
image = cv2.resize(image, (84, 84))
return image
def perform_action(self, onehot_index_action):
if self.repeat_action_probability > 0:
if np.random.uniform() < self.repeat_action_probability:
onehot_index_action = self.previous_action
self.previous_action = onehot_index_action
action = self.onehot_to_atari[onehot_index_action]
state, action, reward, next_state, self.is_terminal = self.perform_atari_action(
action)
return state, onehot_index_action, reward, next_state, self.is_terminal
def perform_atari_action(self, atari_action):
state = self.get_current_state()
reward = self._act(atari_action, self.frame_skip)
if self.use_gui:
self.refresh_gui()
self.frame_history[:-1] = self.frame_history[1:]
self.frame_history[-1] = np.max(self.last_two_frames, axis=0)
next_state = self.get_current_state()
return state, atari_action, reward, next_state, self.is_terminal
def _act(self, ale_action, repeat):
reward = 0
for i in range(repeat):
reward += self.ale.act(ale_action)
if i >= repeat - 2:
self.last_two_frames = [
self.last_two_frames[1],
self._get_frame()
]
self.is_terminal = self.ale.game_over()
# terminate the episode if current_lives has decreased
lives = self.ale.lives()
if self.current_lives != lives:
if self.current_lives > lives and self.terminate_on_end_life:
self.is_terminal = True
self.current_lives = lives
return reward
def get_current_state(self):
#return copy.copy(self.frame_history)
return [x.copy() for x in self.frame_history]
def get_actions_for_state(self, state):
return [
self.atari_to_onehot[a] for a in self.ale.getMinimalActionSet()
]
def reset_environment(self):
self.last_two_frames = [self.zero_history_frames[0], self._get_frame()]
if self.terminate_on_end_life:
if self.ale.game_over():
self.ale.reset_game()
else:
self.ale.reset_game()
self.current_lives = self.ale.lives()
if self.noop_max > 0:
num_noops = np.random.randint(self.noop_max + 1)
self._act(0, num_noops)
self.previous_action = 0
self.frame_history = copy.copy(self.zero_history_frames)
self.frame_history[-1] = np.max(self.last_two_frames, axis=0)
if self.use_gui:
self.refresh_gui()
def is_current_state_terminal(self):
return self.is_terminal
def refresh_gui(self):
current_time = datetime.datetime.now()
if (current_time - self.last_refresh) > self.refresh_time:
self.last_refresh = current_time
gui_image = np.tile(
np.transpose(self.original_frame, axes=(1, 0, 2)), [1, 1, 3])
# gui_image = np.zeros((self.screen_width, self.screen_height, 3), dtype=np.uint8)
# channel = np.random.randint(3)
# gui_image[:,:,channel] = np.transpose(self.original_frame, axes=(1, 0, 2))[:,:,0]
pygame.surfarray.blit_array(self.gui_screen, gui_image)
pygame.display.update()
from visualize import Plotter
# Create the ale interface and load rom files
ale = ALEInterface()
#ale.setBool('display_screen', True)
#pygame.init()
# Load the rom
ale.loadROM('/Users/shashwat/Downloads/pong.bin')
# These are the set of valid actions in the game
legal_actions = ale.getMinimalActionSet()
# How to get screen rgb?
width, height = ale.getScreenDims()
screen_buffer = np.empty((height, width), dtype=np.uint8)
# Some common settings
HISTORY_LENGTH = 4
MAX_STEPS = 1000000
MAX_EPOCHS = 10
MINIBATCH_SIZE = 32
LONG_PRESS_TIMES = 4
GAMMA = 0.9
EPSILON = 0.1
UPDATE_FREQUENCY = 4
MAX_LIVES = ale.lives()
episode_sum = 0
episode_sums = []
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 = os.path.join(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("random_seed", self.rng.randint(0, 10000))
self.ale.setBool("showinfo", False)
self.ale.setInt("frame_skip", 1)
self.ale.setBool('color_averaging', False)
# manual.pdf suggests otherwise.
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) 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 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
def getScreenDims(self):
w, h = ALEInterface.getScreenDims(self)
return h, w #dp
class AtariDriver(object):
"""
A wrapper for atari emulator.
"""
def __init__(self, rom_file, frame_skip=1, viz=0):
"""
:param rom_file: path to the rom
:param frame_skip: skip every k frames
:param viz: the delay. visualize the game while running. 0 to disable
"""
self.ale = ALEInterface()
self.rng = get_rng(self)
self.ale.setInt("random_seed", self.rng.randint(self.rng.randint(0, 1000)))
self.ale.setInt("frame_skip", frame_skip)
self.ale.loadROM(rom_file)
self.width, self.height = self.ale.getScreenDims()
self.actions = self.ale.getMinimalActionSet()
if isinstance(viz, int):
viz = float(viz)
self.viz = viz
self.romname = os.path.basename(rom_file)
if self.viz and isinstance(self.viz, float):
cv2.startWindowThread()
cv2.namedWindow(self.romname)
self._reset()
self.last_image = self._grab_raw_image()
self.framenum = 0
def _grab_raw_image(self):
"""
:returns: the current 3-channel image
"""
m = np.zeros(self.height * self.width * 3, dtype=np.uint8)
self.ale.getScreenRGB(m)
return m.reshape((self.height, self.width, 3))
def grab_image(self):
"""
:returns: a gray-scale image, max-pooled over the last frame.
"""
now = self._grab_raw_image()
ret = np.maximum(now, self.last_image)
self.last_image = now
if self.viz and isinstance(self.viz, float):
cv2.imshow(self.romname, ret)
time.sleep(self.viz)
elif self.viz:
cv2.imwrite("{}/{:06d}.jpg".format(self.viz, self.framenum), ret)
self.framenum += 1
ret = cv2.cvtColor(ret, cv2.COLOR_BGR2YUV)[:,:,0]
ret = ret[36:204,:] # several online repos all use this
return ret
def get_num_actions(self):
"""
:returns: the number of legal actions
"""
return len(self.actions)
def _reset(self):
self.ale.reset_game()
def next(self, act):
"""
:param act: an index of the action
:returns: (next_image, reward, isOver)
"""
r = self.ale.act(self.actions[act])
s = self.grab_image()
isOver = self.ale.game_over()
if isOver:
self._reset()
return (s, r, isOver)
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 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)
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 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 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 {}