def __call__(self, *args): """ Call the predictor on some inputs. Examples: When you have a predictor defined with two inputs, call it with: .. code-block:: python predictor(e1, e2) """ if len(args) == 1 and isinstance(args[0], (list, tuple)): dp = args[0] # backward-compatibility if execute_only_once(): log_deprecated( "Calling a predictor with one datapoint", "Call it with positional arguments instead!", "2018-3-1") else: dp = args output = self._do_call(dp) if self.return_input: return (dp, output) else: return output
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 __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()