class MonsterKongEnv(object):
def __init__(self):
self.game = MonsterKong()
self.p = PLE(self.game, fps=30, display_screen=True)
# self.actions = self.p.getActionSet()
# self._action_space = list(range(self.actions[0]))
# self._action_space.append(self.actions[-1])
self.action_space = self.p.getActionSet()
def reset(self):
self.p.init()
self.p.act(None)
# return self.p.getScreenRGB()
return self.p.getScreenGrayscale()
def step(self, action):
reward = self.p.act(self.action_space[action])
# reward = self.p.act(119)
# print(self.action_space[action], reward)
# return self.p.getScreenRGB(), reward, self.p.game_over()
return self.p.getScreenGrayscale(), reward, self.p.game_over()
@property
def action_space(self):
return self._action_space
@action_space.setter
def action_space(self, action_space):
self._action_space = action_space
class PLEEnv(gym.Env):
def __init__(self, env_config):
game = Catcher(width=screen_wh, height=screen_wh)
fps = 30 # fps we want to run at
frame_skip = 2
num_steps = 2
force_fps = False # False for slower speed
display_screen = True
# make a PLE instance.
self.env = PLE(game,
fps=fps,
frame_skip=frame_skip,
num_steps=num_steps,
force_fps=force_fps,
display_screen=display_screen)
self.env.init()
self.action_dict = {0: None, 1: 97, 2: 100}
#PLE env starts with black screen
self.env.act(self.env.NOOP)
self.action_space = Discrete(3)
self.k = 4
self.observation_space = spaces.Box(low=0,
high=255,
shape=(screen_wh, screen_wh,
1 * self.k))
self.frames = deque([], maxlen=self.k)
def reset(self):
self.env.reset_game()
# PLE env starts with black screen, NOOP step to get initial screen
self.env.act(self.env.NOOP)
ob = np.reshape(self.env.getScreenGrayscale(),
(screen_wh, screen_wh, 1))
for _ in range(self.k):
self.frames.append(ob)
return self._get_ob()
def step(self, action):
#traditional gym env step
#_obs, _rew, done, _info = env.step(env.action_space.sample())
action_value = self.action_dict[action]
_rew = self.env.act(action_value)
#_obs = self.env.getScreenGrayscale()
_obs = np.reshape(self.env.getScreenGrayscale(),
(screen_wh, screen_wh, 1))
self.frames.append(_obs)
_done = self.env.game_over()
_info = {}
return self._get_ob(), _rew, _done, _info
def _get_ob(self):
assert len(self.frames) == self.k
return np.concatenate(self.frames, axis=2)
def main():
env = FlappyBird()
penv = PLE(env, fps=30, display_screen=True, force_fps=True)
#penv.init()
np.random.seed(0)
obs_shape = len(penv.getGameState())
IMG_shape = penv.getScreenGrayscale().shape
action_dim = len(penv.getActionSet())
print(obs_shape, action_dim)
rpm = ReplayMemory(MEMORY_SIZE)
model = Model(act_dim=action_dim)
algorithm = parl.algorithms.DQN(model,
act_dim=action_dim,
gamma=GAMMA,
lr=LEARNING_RATE)
agent = Agent(
algorithm,
obs_dim=obs_shape,
act_dim=action_dim,
e_greed=0.15, # explore 0.1
e_greed_decrement=1e-6 #1e-6
) # probability of exploring is decreasing during training
# 加载模型
if os.path.exists('./dqn_model.ckpt'):
save_path = './dqn_model.ckpt'
agent.restore(save_path)
print("模型加载成功")
eval_reward = evaluate(agent, penv)
def main():
env = FlappyBird()
penv = PLE(env, fps=30, display_screen=True,force_fps=True)
#penv.init()
np.random.seed(0)
obs_shape = len(penv.getGameState())
IMG_shape = penv.getScreenGrayscale().shape
action_dim = len(penv.getActionSet())
print(obs_shape,action_dim)
rpm = ReplayMemory(MEMORY_SIZE)
model = Model(act_dim=action_dim)
algorithm = parl.algorithms.DQN(
model, act_dim=action_dim, gamma=GAMMA, lr=LEARNING_RATE)
agent = Agent(
algorithm,
obs_dim=obs_shape,
act_dim=action_dim,
e_greed=0.15, # explore 0.1
e_greed_decrement=1e-6 #1e-6
) # probability of exploring is decreasing during training
# 加载模型
if os.path.exists('./dqn_model.ckpt'):
save_path = './dqn_model.ckpt'
agent.restore(save_path)
print("模型加载成功")
while len(rpm) < MEMORY_WARMUP_SIZE: # warm up replay memory
run_episode(agent, penv, rpm)
max_episode = 1000
# start train
episode = 0
while episode < max_episode:
# train part
for i in range(0, 50):
total_reward = run_episode(agent, penv, rpm)
episode += 1
eval_reward = evaluate(agent, penv)
logger.info('episode:{} test_reward:{}'.format(
episode, eval_reward))
# 训练结束，保存模型
save_path = './model/dqn_model_{}_{}.ckpt'.format(episode, eval_reward)
agent.save(save_path)
# 训练结束，保存模型
save_path = './dqn_model.ckpt'
agent.save(save_path)
def evaluate_step(agent, seed, sess):
game = FlappyBird()
env = PLE(game, fps=30, display_screen=False, rng=np.random.RandomState(seed))
env.reset_game()
env.act(0) # dummy input
# grayscale input screen for this episode
input_screens = [agent.preprocess(env.getScreenGrayscale())]
t = 0
while not env.game_over():
# feed four previous screen, select an action
action = agent.select_action(input_screens, sess)
# execute the action and get reward
reward = env.act(env.getActionSet()[action]) # reward = +1 when pass a pipe, -5 when die
# observe the result
screen_plum = env.getScreenGrayscale() # get next screen
# append grayscale screen for this episode
input_screens.append(agent.preprocess(screen_plum))
t+=1
if t >= 1000: # maximum score to prevent run forever
break
return t
class FlappyBirdEnv(gym.Env):
def __init__(self):
self.resize_factor = 0.125
self.width = 288
self.height = 512
self.ple = PLE(game=FlappyBird(), fps=30, frame_skip=8)
self.action_set = self.ple.getActionSet()
self.action_space = spaces.Discrete(len(self.action_set))
self.observation_space = spaces.Box(
low=0.0,
high=255.0,
shape=(
int(self.width * self.resize_factor),
int(self.height * self.resize_factor),
1,
),
dtype=np.uint32,
)
self._steps = 0
def reset(self):
self._steps = 0
self.ple.display_screen = False
self.ple.reset_game()
return self._get_state()
def step(self, action):
self._steps += 1
reward = self.ple.act(self.action_set[action])
next_state = self._get_state()
terminal = self.ple.game_over()
return next_state, reward, terminal, {}
def render(self, mode="human"):
self.ple.display_screen = True
def _get_state(self):
return np.expand_dims(imresize(self.ple.getScreenGrayscale(),
self.resize_factor),
axis=-1)
def train(self):
"""Train."""
logs_path = self.args.logs_path
video_path = self.args.video_path
restore = self.args.restore
train = self.args.train
# Initial PLE environment
os.putenv('SDL_VIDEODRIVER', 'fbcon')
os.environ["SDL_VIDEODRIVER"] = "dummy"
# Design reward
reward_values = {
"positive": 1,
"tick": 0.1,
"loss": -1,
}
# Create FlappyBird game env
env = PLE(FlappyBird(),
display_screen=False,
reward_values=reward_values)
# Gets the actions FlappyBird supports
action_set = env.getActionSet()
replay_buffer = ReplayBuffer(self.hparams.replay_buffer_size)
agent = Agent(action_set, self.hparams)
# restore model
if restore:
agent.restore(restore)
reward_logs = []
loss_logs = []
for episode in range(1, self.hparams.total_episode + 1):
# reset env
env.reset_game()
env.act(0)
obs = convert(env.getScreenGrayscale())
state = np.stack([[obs for _ in range(4)]], axis=0)
t_alive = 0
total_reward = 0
if episode % self.hparams.save_video_frequency == 0 and episode > self.hparams.initial_observe_episode:
agent.stop_epsilon()
frames = [env.getScreenRGB()]
while not env.game_over():
action = agent.take_action(state)
reward = env.act(action_set[action])
if episode % self.hparams.save_video_frequency == 0 and episode > self.hparams.initial_observe_episode:
frames.append(env.getScreenRGB())
obs = convert(env.getScreenGrayscale())
obs = np.reshape(obs, [1, 1, obs.shape[0], obs.shape[1]])
state_new = np.append(state[:, 1:, ...], obs, axis=1)
action_onehot = np.zeros(len(action_set))
action_onehot[action] = 1
t_alive += 1
total_reward += reward
replay_buffer.append(
(state, action_onehot, reward, state_new, env.game_over()))
state = state_new
# save video
if episode % self.hparams.save_video_frequency == 0 and episode > self.hparams.initial_observe_episode:
os.makedirs(video_path, exist_ok=True)
clip = make_video(frames, fps=60).rotate(-90)
clip.write_videofile(os.path.join(
video_path, 'env_{}.mp4'.format(episode)),
fps=60)
agent.restore_epsilon()
print('Episode: {} t: {} Reward: {:.3f}'.format(
episode, t_alive, total_reward))
# danger
mp4list = glob.glob('./video_XXX/*.mp4')
if len(mp4list) > 0:
latest = mp4list[0]
latest_timestamp = os.path.getmtime(mp4list[0])
for mp4 in mp4list:
ts = os.path.getmtime(mp4)
if (ts > latest_timestamp):
latest_timestamp = ts
latest = mp4
video = io.open(latest, 'r+b').read()
encoded = base64.b64encode(video)
ipythondisplay.display(
HTML(data='''<video alt="test" autoplay
loop controls style="height: 400px;">
<source src="data:video/mp4;base64,{0}" type="video/mp4" />
</video>'''.format(encoded.decode('ascii'))))
#end danger
else:
print("Could not find video")
if episode > self.hparams.initial_observe_episode and train:
# save model
if episode % self.hparams.save_logs_frequency == 0:
agent.save(episode, logs_path)
np.save(os.path.join(logs_path, 'loss.npy'),
np.array(loss_logs))
np.save(os.path.join(logs_path, 'reward.npy'),
np.array(reward_logs))
# update target network
if episode % self.hparams.update_target_frequency == 0:
agent.update_target_network()
# sample batch from replay buffer
batch_state, batch_action, batch_reward, batch_state_new, batch_over = replay_buffer.sample(
self.hparams.batch_size)
# update policy network
loss = agent.update_Q_network(batch_state, batch_action,
batch_reward, batch_state_new,
batch_over)
loss_logs.extend([[episode, loss]])
reward_logs.extend([[episode, total_reward]])
# print reward and loss
if episode % self.hparams.show_loss_frequency == 0:
print(
'Episode: {} t: {} Reward: {:.3f} Loss: {:.3f}'.format(
episode, t_alive, total_reward, loss))
agent.update_epsilon()
class DdqnBirdSyr():
def __init__(self, playback_mode, mod=None):
self._playback_mode = playback_mode
env = FlappyBird(pipe_gap=200)
self._ple = PLE(env, fps=30, display_screen=DISPLAY)
self._ple.init()
self._sess = tf.Session()
self._agent = DDQNAgent(self._sess, DIM_STATE, DIM_ACTION, LR, TAU, net_name='cnn_bird')
self._sess.run(tf.global_variables_initializer())
self._agent.update_target_paras()
self._saver = tf.train.Saver()
self._replay_buffer = ReplayBuffer(BUFFER_SIZE)
self._explorer = Explorer(EPS_BEGIN, EPS_END, EPS_STEPS, playback_mode)
self.summary = Summary(self._sess, DIR_SUM)
self.summary.add_variable(tf.Variable(0.), 'reward')
self.summary.add_variable(tf.Variable(0.), 'loss')
self.summary.add_variable(tf.Variable(0.), 'maxq')
self.summary.build()
self.summary.write_variables(FLAGS)
self._steps = 0
if mod and os.path.exists(FLAGS.dir_mod.format(mod)):
checkpoint = tf.train.get_checkpoint_state(FLAGS.dir_mod.format(mod))
self._saver.restore(self._sess, save_path=checkpoint.model_checkpoint_path)
print("Loaded checkpoints {0}".format(checkpoint.model_checkpoint_path))
def start(self):
for ep in range(MAX_EP):
sum_reward = 0
last_state = []
for _ in range(STATE_FRAMES):
last_state.append(self._ple.getScreenGrayscale())
last_state = np.dstack(last_state)
last_max_qvalue = 0
for step in range(EP_STEPS):
time.sleep(0.01)
if not step % STATE_FRAMES:
q_value = self._agent.predict([last_state])[0]
last_max_qvalue = np.max(q_value)
act_1_hot = self._explorer.get_action(q_value)
act_index = np.argmax(act_1_hot)
else:
# do nothing
act_index = 1
act_1_hot = np.zeros(DIM_ACTION)
act_1_hot[act_index] = 1
reward = self._ple.act(self._ple.getActionSet()[act_index])
if reward == 0:
reward = 0.1
elif reward == -5:
reward = -1
state = np.reshape(self._ple.getScreenGrayscale(), (SCREEN_WIDTH, SCREEN_HEIGHT, 1))
state = np.append(state, last_state[:, :, :3], axis=2)
done = False
if self._ple.game_over():
done = True
self._replay_buffer.add(last_state, act_1_hot, reward, state, done)
loss = None
if not self._playback_mode and len(self._replay_buffer) > OBV_STEPS:
loss = self._train()
last_state = state
sum_reward += reward
self._steps += 1
if done or step == EP_STEPS - 1:
print('| Step: %i' % self._steps,
'| Episode: %i' % ep,
'| Epoch: %i' % step,
'| qvalue: %.5f' % last_max_qvalue,
'| Sum_Reward: %i' % sum_reward)
if loss != None:
self.summary.run(feed_dict={
'loss': loss,
'reward': sum_reward,
'maxq': last_max_qvalue})
self._ple.reset_game()
break
def _train(self):
batch_state, batch_action, batch_reward, batch_state_next, batch_done = \
self._replay_buffer.sample_batch(MINI_BATCH)
q_value = self._agent.predict(batch_state_next)
max_q_value_index = np.argmax(q_value, axis=1)
target_q_value = self._agent.predict_target(batch_state_next)
double_q = target_q_value[range(len(target_q_value)), max_q_value_index]
batch_y = []
for r, q, d in zip(batch_reward, double_q, batch_done):
if d:
batch_y.append(r)
else:
batch_y.append(r + GAMMA * q)
opt, loss = self._agent.train(batch_state, batch_action, batch_y)
self._agent.update_target_paras()
if not self._steps % CKP_STEP:
self._saver.save(self._sess, DIR_MOD + '/net', global_step=self._steps)
print('Mod saved!')
return loss
def main(args):
logs_path = args.logs_path
video_path = args.video_path
restore = args.restore
train = args.train
# Initial PLE environment
os.putenv('SDL_VIDEODRIVER', 'fbcon')
os.environ["SDL_VIDEODRIVER"] = "dummy"
# Design reward
reward_values = {
"positive": 1,
"tick": 0.1,
"loss": -1,
}
env = PLE(FlappyBird(), fps=30, display_screen=False, reward_values=reward_values)
action_set = env.getActionSet()
reply_buffer = Reply_Buffer(Config.reply_buffer_size)
agent = Agent(action_set)
reward_logs = []
loss_logs = []
# restore model
if restore:
agent.restore(restore)
for episode in range(1, Config.total_episode+1):
# reset env
env.reset_game()
env.act(0)
obs = convert(env.getScreenGrayscale())
state = np.stack([[obs for _ in range(4)]], axis=0)
t_alive = 0
total_reward = 0
if episode % Config.save_video_frequency == 0 and episode > Config.initial_observe_episode:
agent.stop_epsilon()
frames = [env.getScreenRGB()]
while not env.game_over():
action = agent.take_action(state)
reward = env.act(action_set[action])
if episode % Config.save_video_frequency == 0 and episode > Config.initial_observe_episode:
frames.append(env.getScreenRGB())
obs = convert(env.getScreenGrayscale())
obs = np.reshape(obs, [1, 1, obs.shape[0], obs.shape[1]])
state_new = np.append(state[:, 1:,...], obs, axis=1)
action_onehot = np.zeros(len(action_set))
action_onehot[action] = 1
t_alive += 1
total_reward += reward
reply_buffer.append((state, action_onehot, reward, state_new, env.game_over()))
state = state_new
# save video
# if episode % Config.save_video_frequency == 0 and episode > Config.initial_observe_episode:
# os.makedirs(video_path, exist_ok=True)
# clip = make_video(frames, fps=60).rotate(-90)
# clip.write_videofile(os.path.join(video_path, 'env_{}.mp4'.format(episode)), fps=60)
# agent.restore_epsilon()
# print('Episode: {} t: {} Reward: {:.3f}' .format(episode, t_alive, total_reward))
if episode > Config.initial_observe_episode and train:
# save model
if episode % Config.save_logs_frequency == 0:
agent.save(episode, logs_path)
np.save(os.path.join(logs_path, 'loss.npy'), np.array(loss_logs))
np.save(os.path.join(logs_path, 'reward.npy'), np.array(reward_logs))
# update target network
if episode % Config.update_target_frequency == 0:
agent.update_target_network()
# sample batch from reply buffer
batch_state, batch_action, batch_reward, batch_state_new, batch_over = reply_buffer.sample(Config.batch_size)
# update policy network
loss = agent.update_Q_network(batch_state, batch_action, batch_reward, batch_state_new, batch_over)
loss_logs.extend([[episode, loss]])
reward_logs.extend([[episode, total_reward]])
# print reward and loss
if episode % Config.show_loss_frequency == 0:
print('Episode: {} t: {} Reward: {:.3f} Loss: {:.3f}' .format(episode, t_alive, total_reward, loss))
agent.update_epsilon()
env.init()
for epoch in range(1, num_epochs + 1):
steps, num_episodes = 0, 0
losses, rewards = [], []
env.display_screen = True
# training loop
while num_episodes < num_steps_train:
episode_reward = 0.0
agent.start_episode()
while env.game_over() == False: #and steps < num_steps_train:
state = env.getGameState()
screen = env.getScreenGrayscale()
screen = preprocess(state, screen)
# screen = np.reshape(screen,(200,200,1))
# print((screen[0]))
#screen = screen[:,np.newaxis]
reward, action = agent.act(screen, epsilon=epsilon)
memory.add([screen, action, reward, env.game_over()])
if steps % update_frequency == 0:
loss = memory.train_agent_batch(agent)
if loss is not None:
losses.append(loss)
epsilon = np.max([epsilon_min, epsilon - epsilon_rate])
episode_reward += reward
steps += 1
class Environment():
def __init__(self, device, display=True):
# Design reward
reward_values = {
"positive": 1,
"tick": 0.1,
"loss": -1,
}
self.env = PLE(FlappyBird(),
display_screen=display,
reward_values=reward_values)
self.device = device
self.action_set = self.env.getActionSet()
self.frames = []
def reset(self):
self.env.reset_game()
def start(self):
self.env.act(0)
obs = convert(self.env.getScreenGrayscale())
self.state = np.stack([[obs for _ in range(4)]], axis=0)
self.t_alive = 0
self.total_reward = 0
return self.state
def game_over(self):
return self.env.game_over()
def getScore(self):
return self.env.score()
def step(self, action):
reward = self.env.act(self.action_set[action])
# make next state
obs = convert(self.env.getScreenGrayscale())
obs = np.reshape(obs, [1, 1, obs.shape[0], obs.shape[1]])
next_state = np.append(self.state[:, 1:, ...], obs, axis=1)
self.t_alive += 1
self.total_reward += reward
self.state = next_state
return self.state, reward, self.env.game_over()
def get_screen(self):
return self.env.getScreenRGB()
def record(self):
self.frames.append(self.env.getScreenRGB())
def saveVideo(self, episode, video_path):
os.makedirs(video_path, exist_ok=True)
clip = make_video(self.frames, fps=60).rotate(-90)
clip.write_videofile(os.path.join(video_path,
'env_{}.mp4'.format(episode)),
fps=60)
print('Episode: {} t: {} Reward: {:.3f}'.format(
episode, self.t_alive, self.total_reward))
def DeepQLearning(mode, fname = '', epsilon = 1, discount = 0.99):
game = FlappyBird()
rewards = {
'positive' : 10,
'stick' : 0,
'loss' : -10
}
env = PLE(game, fps = 30, display_screen = False, reward_values = rewards)
env.init()
if mode == 'new':
model = build_model(env)
elif mode == 'retrain':
model = load_model(fname)
#parameters
actions = env.getActionSet()
print(actions)
nA = len(env.getActionSet())
final_epsilon = 0.1
epsilon_decay = nth_root(NUMBER_EPISODES, final_epsilon/epsilon)
print("=========== Start Training ===========\n")
avg_score = []
score = 0
for i in range(1, NUMBER_EPISODES):
epsilon = epsilon*epsilon_decay
action_reward = []
if (i % 10000 == 0):
avg = mean(avg_score)
model.save("/content/drive/My Drive/"+'episode_{}_AvgScore_{}.h5'.format(i, avg))
avg_score.clear()
print("\nEpisode_{}_AvgScore_{}.hdf5 Saved !".format(i, avg))
for t in itertools.count():
#approx next action
state = img_as_float(resize(env.getScreenGrayscale(), (80,80)))
state = state.reshape((80, 80, 1))
action_index = epsilon_greedy_policy(model, state, nA, epsilon)
action = actions[action_index]
reward = env.act(action)
next_state = img_as_float(resize(env.getScreenGrayscale(), (80,80)))
next_state = next_state.reshape((80, 80, 1))
score += reward
done = env.game_over()
#action_reward.append((action, reward))
if len(MEMORY_BUFFER) == MEMORY_BUFFER_SIZE:
MEMORY_BUFFER.pop(0)
MEMORY_BUFFER.append((state, action_index, reward, next_state, done))
experience_replay(env, model, discount)
if env.game_over():
break
env.reset_game()
avg_score.append(score)
#print(action_reward)
print("\nEpisode {}/{} ---- Score : {}".format(i,NUMBER_EPISODES, score))
score = 0
with open("MEMORY_BUFFER.txt", "wb") as fp:
pickle.dump("/content/drive/My Drive/"+MEMORY_BUFFER, fp)
return model
game = FlappyBird()
p = PLE(game, fps=30, display_screen=True, force_fps=False)
agent = Agent(allowed_actions=p.getActionSet(), channels=1, learning_rate=0.0085)
try:
agent.model.load_state_dict(load('memento_movement.pt'))
except EOFError:
print("Error loading the saved model state")
p.init()
nb_frames = 10000000
rewards = []
episode = []
old_observation = preprocessing(p.getScreenGrayscale())
movement_captioning = 0
for i in range(nb_frames):
if p.game_over():
p.reset_game()
preprocessed_observation = preprocessing(p.getScreenGrayscale())
# Forward
action, log_action = agent.pickAction(preprocessed_observation-old_observation)
if movement_captioning < 2:
old_observation = preprocessed_observation
movement_captioning += 1
elif movement_captioning < 15:
movement_captioning += 1
else:
movement_captioning = 0
reward_action = p.act(action)
def DeepQLearning(epsilon=1, discount=0.99):
game = FlappyBird()
rewards = {'positive': 1, 'stick': 0, 'loss': 0}
env = PLE(game, fps=30, display_screen=True, reward_values=rewards)
env.init()
model_selection = build_model(env)
model_evaluation = bulid_model(env)
MEMORY_BUFFERS = [MEMORY_BUFFER_EVALUATION, MEMORY_BUFFER_SELECTION]
models = [model_evaluation, model_selection]
#parameters
actions = env.getActionSet()
print(actions)
nA = len(env.getActionSet())
final_epsilon = 0.001
epsilon_decay = nth_root(NUMBER_EPISODES, final_epsilon / epsilon)
print("=========== Start Training ===========\n")
for i in range(1, NUMBER_EPISODES):
epsilon = epsilon * epsilon_decay
score = 0
avg_score = []
#cdaction_reward = []
if (i % 1000 == 0):
avg = np.mean(np.asarray(avg_score))
model.save_weights('episode_{}_AvgScore_{}.hdf5'.format(i, avg))
avg_score.clear()
print("\nEpisode_{}_AvgScore_{}.hdf5 Saved !".format(i, avg))
for t in itertools.count():
#appro next action
state = img_as_float(resize(env.getScreenGrayscale(), (64, 64)))
state = state.reshape((64, 64, 1))
action_index = epsilon_greedy_policy(model, state, nA, epsilon)
action = actions[action_index]
reward = env.act(action)
next_state = img_as_float(
resize(env.getScreenGrayscale(), (64, 64)))
next_state = next_state.reshape((64, 64, 1))
score += reward
done = env.game_over()
avg_score.append(score)
#action_reward.append((action, reward))
if not env.game_over():
reward += discount * np.max(approximation(model, next_state))
if len(MEMORY_BUFFER) == MEMORY_BUFFER_SIZE:
MEMORY_BUFFER.pop(0)
model_choice = np.random.choice(np.array([0, 1]))
MEMORY_BUFFERS[model_choice].append(
(state, action_index, reward, next_state, done))
if env.game_over():
break
env.reset_game()
experience_replay(env, models[model_choice], discount)
#print(action_reward)
if i % 100 == 0:
print("\nEpisode {}/{} ---- Score : {}".format(
i, NUMBER_EPISODES, score))
return model
env.act(119)
new_action = 119
else:
env.act(None)
new_action = None
else:
action = model.predict([prev_obs.reshape(80, 80, 1)])[0]
new_action = np.argmax(action)
if new_action == 0:
new_action = 119
env.act(119)
else:
new_action = None
env.act(None)
choices.append(new_action)
new_observation = cv2.resize(env.getScreenGrayscale(), (80, 80))
prev_obs = new_observation
game_memory.append([new_observation, new_action])
score = env.score()
if env.game_over():
break
env.reset_game()
scores.append(score)
if score >= score_requirement:
accepted_scores.append(score)
print('Average Score:', sum(scores) / len(scores))
print('Success rate:', len(accepted_scores) / len(scores))
print(score_requirement)
from ple import PLE
import numpy as np
def get_obs(env):
# game_state = env.getGameState()
# obs = list(game_state.values())
""" 预处理 210x160x3 uint8 frame into 6400 (80x80) 1维 float vector """
# image = env.getScreenRGB()
# image = image[35:195] # 裁剪
# image = image[::2, ::2, 0] # 下采样，缩放2倍
# image[image == 144] = 0 # 擦除背景 (background type 1)
# image[image == 109] = 0 # 擦除背景 (background type 2)
# image[image != 0] = 1 # 转为灰度图，除了黑色外其他都是白色
obs = env.getScreenGrayscale() / 255.0
return obs.astype(np.float).ravel()
if __name__ == '__main__':
game = Pong(width=128, height=128, MAX_SCORE=11)
p = PLE(game, fps=30, display_screen=True, force_fps=True)
# 根据parl框架构建agent
print(p.getActionSet())
#obs = p.getScreenRGB()
obs = p.getScreenGrayscale()
print(obs)
print(obs.shape)
act_dim = len(p.getActionSet())
game_state = p.getGameState()
print(game_state)
class MyEnv(Environment):
VALIDATION_MODE = 0
memSize = 4
# original size is 288x512 so dividing
dividing_factor = 8
width = 288 // dividing_factor
height = 512 // dividing_factor
def __init__(self,
rng,
game=None,
frame_skip=4,
ple_options={
"display_screen": True,
"force_fps": True,
"fps": 30
}):
self._mode = -1
self._mode_score = 0.0
self._mode_episode_count = 0
self._frame_skip = frame_skip if frame_skip >= 1 else 1
self._random_state = rng
if game is None:
raise ValueError("Game must be provided")
self._ple = PLE(game, **ple_options)
self._ple.init()
w, h = self._ple.getScreenDims()
self._screen = np.empty((w, h), dtype=np.uint8)
self._reduced_screen = np.empty((self.width, self.height),
dtype=np.uint8)
self._actions = self._ple.getActionSet()
def reset(self, mode):
if mode == MyEnv.VALIDATION_MODE:
if self._mode != MyEnv.VALIDATION_MODE:
self._mode = MyEnv.VALIDATION_MODE
self._mode_score = 0.0
self._mode_episode_count = 0
else:
self._mode_episode_count += 1
elif self._mode != -1: # and thus mode == -1
self._mode = -1
print("Dead at score {}".format(self._ple.game.getScore()))
self._ple.reset_game()
# for _ in range(self._random_state.randint(15)):
# self._ple.act(self._ple.NOOP)
# self._screen = self._ple.getScreenGrayscale()
# cv2.resize(self._screen, (48, 48),
# self._reduced_screen,
# interpolation=cv2.INTER_NEAREST)
return [self.memSize * [self.width * [self.height * [0]]]]
def act(self, action):
action = self._actions[action]
reward = 0
for _ in range(self._frame_skip):
reward += self._ple.act(action)
if self.inTerminalState():
break
self._screen = self._ple.getScreenGrayscale()
self._reduced_screen = cv2.resize(self._screen,
(self.height, self.width),
interpolation=cv2.INTER_NEAREST)
cv2.imshow("debug", self._reduced_screen.T)
cv2.waitKey(1)
self._mode_score += reward
return np.sign(reward)
def summarizePerformance(self, test_data_set):
if self.inTerminalState() == False:
self._mode_episode_count += 1
mean = (self._mode_score / self._mode_episode_count
if self._mode_episode_count else "N/A")
print("== Mean score per episode is {} over {} episodes ==".format(
mean, self._mode_episode_count))
def inputDimensions(self):
return [(self.memSize, self.width, self.height)]
def observationType(self, subject):
return np.float32
def nActions(self):
return len(self._actions)
def observe(self):
return [np.array(self._reduced_screen) / 256.]
def inTerminalState(self):
return self._ple.game_over()
podium = 0
podium_index = 0
background = 0
bird_pixels = None
ok = False
city_pixels = None
city_index = None
ok2 = False
for i in range(nb_frames):
if p.game_over():
p.reset_game()
ok = True
img = p.getScreenGrayscale().transpose()
if ok == True:
ok2 = True
ok = False
if i == 1 or ok2 == True:
ok2 = False
bincount_vector = np.bincount(img[0])
background = np.argmax(bincount_vector)
podium, podium_index = compute_podium(img)
#bird_pixels = get_bird_pixels(img, background)
city_pixels, city_index = get_city_pixels(img, background,
podium_index)
transform_image(img, background, podium, podium_index + 1, city_index,
city_pixels)
class Bot():
"""
This is our Test agent. It's gonna pick some actions after training!
"""
def __init__(self, lr):
self.lr = lr
self.game = Pixelcopter(width=480, height=480)
self.p = PLE(self.game, fps=60, display_screen=True)
self.actions = self.p.getActionSet()
#def pickAction(self, reward, obs):
# return random.choice(self.actions)
def frame_step(self, act_inp):
terminal = False
reward = self.p.act(act_inp)
if self.p.game_over():
self.p.reset_game()
terminal = True
reward = -1
else:
reward = 1
self.score = self.p.score()
img = self.p.getScreenGrayscale()
img = transform.resize(img, (80, 80))
img = exposure.rescale_intensity(img, out_range=(0, 255))
img = img / 255.0
return img, reward, terminal
def build_model(self):
print("Building the model..")
model = Sequential()
model.add(
Convolution2D(32,
8,
8,
subsample=(4, 4),
border_mode='same',
input_shape=(img_rows, img_cols,
img_channels))) #80*80*4
model.add(Activation('relu'))
model.add(Convolution2D(64, 4, 4, subsample=(2, 2),
border_mode='same'))
model.add(Activation('relu'))
model.add(Convolution2D(64, 3, 3, subsample=(1, 1),
border_mode='same'))
model.add(Activation('relu'))
model.add(Flatten())
model.add(Dense(512))
model.add(Activation('relu'))
model.add(Dense(2))
adam = Adam(lr=self.lr)
model.compile(loss='mse', optimizer=adam)
self.model = model
print("Finished building the model..")
def trainNetwork(self, mode):
D = deque()
x_t, r_0, terminal = self.frame_step(self.actions[1])
s_t = np.stack((x_t, x_t, x_t, x_t), axis=2)
#print (s_t.shape)
#need to reshape for keras
s_t = s_t.reshape(1, s_t.shape[0], s_t.shape[1],
s_t.shape[2]) #1*80*80*4
if mode == 'Run':
OBSERVE = 999999999 #We keep observe, never train
epsilon = FINAL_EPSILON
print("Now we load weight")
self.model.load_weights("model.h5")
adam = Adam(lr=self.lr)
self.model.compile(loss='mse', optimizer=adam)
print("Weight load successfully")
else: #We go to training mode
OBSERVE = OBSERVATION
epsilon = INITIAL_EPSILON
t = 0
while (True):
loss = 0
Q_sa = 0
action_index = 0
r_t = 0
#choose an action epsilon greedy
if t % FRAME_PER_ACTION == 0:
if random.random() <= epsilon:
print("----------Random Action----------")
action_index = random.randrange(num_actions)
chosen_act = self.actions[action_index]
else:
q = self.model.predict(
s_t) #input a stack of 4 images, get the prediction
max_Q = np.argmax(q)
action_index = max_Q
chosen_act = self.actions[action_index]
#We reduced the epsilon gradually
if epsilon > FINAL_EPSILON and t > OBSERVE:
epsilon -= (INITIAL_EPSILON - FINAL_EPSILON) / EXPLORE
#run the selected action and observed next state and reward
x_t1, r_t, terminal = self.frame_step(chosen_act)
x_t1 = x_t1.reshape(1, x_t1.shape[0], x_t1.shape[1], 1) #1x80x80x1
s_t1 = np.append(x_t1, s_t[:, :, :, :3], axis=3)
# store the transition in D
D.append((s_t, action_index, r_t, s_t1, terminal))
if len(D) > REPLAY_MEMORY:
D.popleft()
#only train if done observing
if t > OBSERVE:
#sample a minibatch to train on
minibatch = random.sample(D, BATCH)
#Now we do the experience replay
state_t, action_t, reward_t, state_t1, terminal = zip(
*minibatch)
state_t = np.concatenate(state_t)
state_t1 = np.concatenate(state_t1)
targets = self.model.predict(state_t)
Q_sa = self.model.predict(state_t1)
targets[range(BATCH), action_t] = reward_t + GAMMA * np.max(
Q_sa, axis=1) * np.invert(terminal)
loss += self.model.train_on_batch(state_t, targets)
s_t = s_t1
t = t + 1
# save progress every 10000 iterations
if t % 1000 == 0:
print("Now we save model")
self.model.save_weights("model.h5", overwrite=True)
with open("model.json", "w") as outfile:
json.dump(self.model.to_json(), outfile)
# print info
state = ""
if t <= OBSERVE:
state = "observe"
elif t > OBSERVE and t <= OBSERVE + EXPLORE:
state = "explore"
else:
state = "train"
print("TIMESTEP", t, "/ STATE", state, \
"/ EPSILON", epsilon, "/ ACTION", action_index, "/ REWARD", r_t, \
"/ Q_MAX " , np.max(Q_sa), "/ Loss ", loss)
print("Episode finished!")
print("************************")
def playGame(self, mode):
self.build_model()
self.trainNetwork(mode)
def main(self):
modes = ["Train", "Run"]
mode = modes[input("Do you wanna Train(0) or Run(1): ")]
self.playGame(mode)
class Catcher3:
"""
Environment Specifications:
Short summary: Player controls paddle and gains points for catching apples that fall from the sky; loses points and
lives otherwise.
Number of Actions = 3 (move left, do nothing, move right)
Observation Dimension = 4 (paddle x-position, paddle velocity, apple x-position, apple y-position)
Observation Dtype = np.float64
Reward = 1, if paddle touches apple
-1, if apple touches floor (and -1 life)
-5, if out of lives
0, on any other transition
Summary Name: steps_per_episode, reward_per_step
"""
def __init__(self, config, summary=None):
assert isinstance(config, Config)
""" Parameters:
Name: Type Default: Description(omitted when self-explanatory):
max_episode_length int 500000 The max number of steps executed in an episoe
before forcing a time out
norm_state bool True Normalize the state to [-1,1]
display bool False Whether to display the screen of the game
init_lives int 3 Number of lives at the start of the game
store_summary bool False Whether to store the summary of the environment
number_of_steps int 500000 Total number of environment steps
"""
check_attribute(config, 'current_step', 0)
self.config = config
# environment parameters
self.max_episode_length = check_attribute(config,
'max_episode_length',
default_value=500000)
self.norm_state = check_attribute(config,
'norm_state',
default_value=True)
self.display = False
self.init_lives = 3
# self.display = check_attribute(config, 'display', default_value=False)
# self.init_lives = check_attribute(config, 'init_lives', default_value=3)
# summary parameters
self.store_summary = check_attribute(config,
'store_summary',
default_value=False)
self.summary = summary
self.number_of_steps = check_attribute(config, 'number_of_steps',
500000)
if self.store_summary:
assert isinstance(self.summary, dict)
self.reward_per_step = np.zeros(self.number_of_steps,
dtype=np.float64)
check_dict_else_default(self.summary, "steps_per_episode", [])
check_dict_else_default(self.summary, "reward_per_step",
self.reward_per_step)
# setting up original catcher environment with the specified parameters
self.catcherOb = Catcher(init_lives=self.init_lives)
if not self.display:
# do not open a pygame window
os.putenv('SDL_VIDEODRIVER', 'fbcon')
os.environ["SDL_VIDEODRIVER"] = "dummy"
if self.norm_state:
self.pOb = PLE(self.catcherOb,
fps=30,
state_preprocessor=get_ob_normalize,
display_screen=self.display)
else:
self.pOb = PLE(self.catcherOb,
fps=30,
state_preprocessor=get_ob,
display_screen=self.display)
self.pOb.init()
# environment internal state
self.actions = [
97, None, 100
] # self.pOb.getActionSet() (left = 97, do nothing = None, right = 100)
self.num_action = 3
self.num_state = 4
self.episode_step_count = 0
self.pOb.reset_game()
self.current_state = self.pOb.getGameState()
def _get_image(self):
"""return a np array with shape = [64, 64, 3]"""
return self.pOb.getScreenGrayscale()
def setseed(self, value):
self.pOb.rng.seed(value)
return 0
def reset(self):
if self.store_summary:
self.summary["steps_per_episode"].append(self.episode_step_count)
self.pOb.reset_game()
self.episode_step_count = 0
self.current_state = self.pOb.getGameState()
return self.current_state
def step(self, a):
self.config.current_step += 1
self.episode_step_count += 1
reward = self.pOb.act(self.actions[a])
if self.store_summary:
self.reward_per_step[self.config.current_step - 1] += reward
terminate = self.pOb.game_over()
self.current_state = self.pOb.getGameState()
timeout = bool(self.episode_step_count >= self.max_episode_length
or self.config.current_step >= self.number_of_steps)
return self.current_state, reward, terminate, timeout
def get_current_state(self):
return self.current_state
def close(self):
return
OBSERVATIONS = 300
#reward_discount = 0.99
time_per_episode = 1000
game = Pixelcopter(img_size,img_size)
env = PLE(game)
action_size = 2
score_mean = np.zeros(EPISODES//10)
score_std = np.zeros(EPISODES//10)
score_last10 = []
training_count = 0
plt.figure()
max_score = 0
for e in range(EPISODES):
env.init()
state = process(env.getScreenGrayscale())
for time in range(time_per_episode):
# Set actions
if time < 3:
action = act_dict_decode[0]
else:
action_input = np.concatenate((state,
memory[-1][0],
memory[-2][0],
memory[-3][0]), axis=3)
action = act(action_input)
reward = env.act(action) # get reward from action
next_state = process(env.getScreenGrayscale()) #@ next state
done = env.game_over() # check game over and reassign reward
if reward >= 0: reward = 1
class MyEnv(Environment):
VALIDATION_MODE = 0
def __init__(self, rng, game=None, frame_skip=4,
ple_options={"display_screen": True, "force_fps":True, "fps":30}):
self._mode = -1
self._mode_score = 0.0
self._mode_episode_count = 0
self._frameSkip = frame_skip if frame_skip >= 1 else 1
self._random_state = rng
if game is None:
raise ValueError("Game must be provided")
self._ple = PLE(game, **ple_options)
self._ple.init()
w, h = self._ple.getScreenDims()
self._screen = np.empty((h, w), dtype=np.uint8)
self._reducedScreen = np.empty((48, 48), dtype=np.uint8)
self._actions = self._ple.getActionSet()
def reset(self, mode):
if mode == MyEnv.VALIDATION_MODE:
if self._mode != MyEnv.VALIDATION_MODE:
self._mode = MyEnv.VALIDATION_MODE
self._mode_score = 0.0
self._mode_episode_count = 0
else:
self._mode_episode_count += 1
elif self._mode != -1: # and thus mode == -1
self._mode = -1
self._ple.reset_game()
for _ in range(self._random_state.randint(15)):
self._ple.act(self._ple.NOOP)
self._screen = self._ple.getScreenGrayscale()
cv2.resize(self._screen, (48, 48), self._reducedScreen, interpolation=cv2.INTER_NEAREST)
return [4 * [48 * [48 * [0]]]]
def act(self, action):
action = self._actions[action]
reward = 0
for _ in range(self._frameSkip):
reward += self._ple.act(action)
if self.inTerminalState():
break
self._screen = self._ple.getScreenGrayscale()
cv2.resize(self._screen, (48, 48), self._reducedScreen, interpolation=cv2.INTER_NEAREST)
self._mode_score += reward
return np.sign(reward)
def summarizePerformance(self, test_data_set):
if self.inTerminalState() == False:
self._mode_episode_count += 1
print("== Mean score per episode is {} over {} episodes ==".format(self._mode_score / self._mode_episode_count, self._mode_episode_count))
def inputDimensions(self):
return [(4, 48, 48)]
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._ple.game_over()
def trainNetwork(s, readout, h_fc1, sess):
# define the cost function
a = tf.placeholder("float", [None, ACTIONS])
y = tf.placeholder("float", [None])
readout_action = tf.reduce_sum(tf.mul(readout, a), reduction_indices = 1)
cost = tf.reduce_mean(tf.square(y - readout_action))
train_step = tf.train.AdamOptimizer(1e-6).minimize(cost)
# open up a game state to communicate with emulator
#setupGame()
gameClass = FlappyBird(width=288, height=512, pipe_gap=100)
fps = 30
frame_skip = 2
num_steps = 1
force_fps = False
display_screen = True
reward = 0.0
nb_frames = 15000
game = PLE(gameClass, fps=fps, frame_skip=frame_skip, num_steps=num_steps,
force_fps=force_fps, display_screen=display_screen)
game.init()
# store the previous observations in replay memory
D = deque()
# printing
logdir = "logs_" + GAME
if not os.path.exists(logdir):
os.makedirs(logdir)
a_file = open(logdir + "/readout.txt", 'w')
h_file = open(logdir + "/hidden.txt", 'w')
# get the first state by doing nothing and preprocess the image to 80x80x4
r_0 = game.act(game.NOOP)
x_t = game.getScreenGrayscale()
terminal = game.game_over()
if terminal:
print "NOOOO"
game.reset_game()
x_t = cv2.resize(x_t, (80, 80))
ret, x_t = cv2.threshold(x_t,1,255,cv2.THRESH_BINARY)
s_t = np.stack((x_t, x_t, x_t, x_t), axis = 2)
# saving and loading networks
#saver = tf.train.Saver()
sess.run(tf.initialize_all_variables())
'''
checkpoint = tf.train.get_checkpoint_state("saved_networks")
if checkpoint and checkpoint.model_checkpoint_path:
saver.restore(sess, checkpoint.model_checkpoint_path)
print "Successfully loaded:", checkpoint.model_checkpoint_path
else:
print "Could not find old network weights"
'''
epsilon = INITIAL_EPSILON
t = 0
while True:
# choose an action epsilon greedily
readout_t = readout.eval(feed_dict = {s : [s_t]})[0]
a_t = np.zeros([ACTIONS])
action_index = 0
if random.random() <= epsilon or t <= OBSERVE:
action_index = random.randrange(ACTIONS)
a_t[random.randrange(ACTIONS)] = 1
else:
action_index = np.argmax(readout_t)
a_t[action_index] = 1
# scale down epsilon
if epsilon > FINAL_EPSILON and t > OBSERVE:
epsilon -= (INITIAL_EPSILON - FINAL_EPSILON) / EXPLORE
for i in range(0, K):
# run the selected action and observe next state and reward
r_t = game.act(np.argmax(a_t))
x_t1 = game.getScreenGrayscale()
terminal = game.game_over()
if terminal:
print "NOOO2"
game.reset_game()
x_t1 = cv2.resize(x_t1, (80, 80))
ret, x_t1 = cv2.threshold(x_t1,1,255,cv2.THRESH_BINARY)
x_t1 = np.reshape(x_t1, (80, 80, 1))
s_t1 = np.append(x_t1, s_t[:,:,1:], axis = 2)
# store the transition in D
D.append((s_t, a_t, r_t, s_t1, terminal))
if len(D) > REPLAY_MEMORY:
D.popleft()
# only train if done observing
if t > OBSERVE:
# sample a minibatch to train on
minibatch = random.sample(D, BATCH)
# get the batch variables
s_j_batch = [d[0] for d in minibatch]
a_batch = [d[1] for d in minibatch]
r_batch = [d[2] for d in minibatch]
s_j1_batch = [d[3] for d in minibatch]
y_batch = []
readout_j1_batch = readout.eval(feed_dict = {s : s_j1_batch})
for i in range(0, len(minibatch)):
# if terminal only equals reward
if minibatch[i][4]:
y_batch.append(r_batch[i])
else:
y_batch.append(r_batch[i] + GAMMA * np.max(readout_j1_batch[i]))
# perform gradient step
train_step.run(feed_dict = {
y : y_batch,
a : a_batch,
s : s_j_batch})
# update the old values
s_t = s_t1
t += 1
# save progress every 10000 iterations
if t % 10000 == 0:
saver.save(sess, 'saved_networks/' + GAME + '-dqn', global_step = t)
# print info
state = ""
if t <= OBSERVE:
state = "observe"
elif t > OBSERVE and t <= OBSERVE + EXPLORE:
state = "explore"
else:
state = "train"
print "TIMESTEP", t, "/ STATE", state, "/ EPSILON", epsilon, "/ ACTION", action_index, "/ REWARD", r_t, "/ Q_MAX %e" % np.max(readout_t)
# write info to files
'''
class SnakeQNetwork:
def __init__(self,
food_reward=10,
dead_reward=-10,
alive_reward=2,
discount_factor=0.95,
batch_size=10,
train_epochs=100,
history_size=1000,
history_sample_size=50):
self.food_reward = food_reward
self.dead_reward = dead_reward
self.alive_reward = alive_reward
self.discount_factor = discount_factor
self.batch_size = batch_size
self.train_epochs = train_epochs
self.history_size = history_size
self.history_sample_size = history_sample_size
self.q_learning_history = QLearningHistory(history_size)
self.exploration_factor = 0.2
self.next_move_prediction = None
self.is_neural_network_initialized = False
pygame.init()
self.game = Snake(width=64, height=64)
self.env = PLE(self.game, display_screen=True)
self.env.init()
self.LOG = gym.logger
def run(self,
maximum_number_of_iterations=10000,
learning_rate=0.5,
training=False):
for iteration in range(0, maximum_number_of_iterations):
if not self.is_neural_network_initialized:
self.___initialize_neural_newtork()
self.is_neural_network_initialized = True
observation = self.env.getScreenGrayscale()
observation_width = self.env.getScreenDims()[0]
observation_height = self.env.getScreenDims()[1]
self.game.init()
# exit the while loop only if it's GAME OVER
while True:
q_values = self.next_move_prediction.predict(
x=observation.reshape(
1, observation_width * observation_height),
batch_size=1)
best_snake_action = np.argmax(q_values)
reward = self.__take_snake_action(best_snake_action)
previous_observation = copy.deepcopy(observation)
observation = self.env.getScreenGrayscale()
is_game_over = self.env.game_over()
self.LOG.info(
"Current action reward: {r}. Is game over: {d}".format(
r=reward, d=is_game_over))
if training:
reward = self.__get_custom_reward(reward)
self.q_learning_history.record_event(
state=previous_observation,
action=best_snake_action,
reward=reward,
new_state=observation)
last_event = self.q_learning_history.get_last_event()
self.LOG.info(
"Added event #{n} to history. Action: {a}; Reward: {r}"
.format(a=last_event[1],
r=reward,
n=self.q_learning_history.size))
if self.q_learning_history.is_full():
history_batch = random.sample(
self.q_learning_history.get_events(),
self.history_sample_size)
self.LOG.info(
"Sampling {n} events from history.".format(
n=self.history_sample_size))
training_batch_data = []
training_batch_labels = []
for history_event in history_batch:
old_state, action, reward, new_state = history_event
q_values_before_action = self.next_move_prediction.predict(
x=old_state.reshape(
1, observation_width * observation_height),
batch_size=1)
q_values_after_action = self.next_move_prediction.predict(
x=new_state.reshape(
1, observation_width * observation_height),
batch_size=1)
best_q_value_after_action = np.argmax(
q_values_after_action)
training_q_values = np.zeros((1, 4))
for value_idx in range(
0, len(q_values_before_action)):
training_q_values[
value_idx] = q_values_before_action[
value_idx]
output_update = learning_rate * (
reward + (self.discount_factor *
best_q_value_after_action))
training_q_values[0][:] = 0
training_q_values[0][action] = output_update
training_batch_data.append(
old_state.reshape(
observation_width * observation_height, ))
training_batch_labels.append(
training_q_values.reshape(4, ))
training_batch_data = np.array(training_batch_data)
training_batch_labels = np.array(training_batch_labels)
self.next_move_prediction.fit(
x=training_batch_data,
y=training_batch_labels,
epochs=self.train_epochs,
batch_size=self.batch_size)
if is_game_over:
break
if self.exploration_factor > 0.1:
self.exploration_factor -= (1.0 / maximum_number_of_iterations)
self.LOG.info(
"Exploration factor updated! New value: {v}".format(
v=self.exploration_factor))
def ___initialize_neural_newtork(self):
input_layer_size = self.env.getScreenDims(
)[0] * self.env.getScreenDims()[1]
hidden_layer_size = 100
output_layer_size = 4
input_layer = Dense(kernel_initializer='lecun_uniform',
units=hidden_layer_size,
input_shape=(input_layer_size, ),
activation='sigmoid')
hidden_layer = Dense(kernel_initializer='lecun_uniform',
units=output_layer_size,
activation='linear')
self.next_move_prediction = Sequential()
self.next_move_prediction.add(input_layer)
self.next_move_prediction.add(hidden_layer)
self.next_move_prediction.compile(optimizer='rmsprop',
loss='mean_squared_error')
def __take_snake_action(self, snake_action):
random_number = np.random.random_sample()
if not self.q_learning_history.is_full():
snake_action = random.choice(self.env.getActionSet())
self.LOG.info("Snake chose to do a random move - add to qHistory!")
return self.env.act(snake_action)
elif random_number < self.exploration_factor:
snake_action = random.choice(self.env.getActionSet())
self.LOG.info(
"Random number is smaller than exploration factor, {r} < {ef}! Snake chose random move!"
.format(r=random_number, ef=self.exploration_factor))
return self.env.act(snake_action)
elif snake_action == 0:
self.LOG.info("Snake chose to go up")
return self.env.act(115)
elif snake_action == 1:
self.LOG.info("Snake chose to go left")
return self.env.act(97)
elif snake_action == 2:
self.LOG.info("Snake chose to go down")
return self.env.act(119)
elif snake_action == 3:
self.LOG.info("Snake chose to go right")
return self.env.act(100)
def __get_custom_reward(self, reward):
if reward >= 1:
self.LOG.info(
"Has eaten food! Reward is {r}".format(r=self.food_reward))
return self.food_reward
elif reward >= 0:
self.LOG.info(
"Stayed alive! Reward is {r}".format(r=self.alive_reward))
return self.alive_reward
else:
self.LOG.info("Crashed! Reward is {r}".format(r=self.dead_reward))
return self.dead_reward
class MyEnv(Environment):
VALIDATION_MODE = 0
def __init__(self,
rng,
game=None,
frame_skip=4,
ple_options={
"display_screen": True,
"force_fps": True,
"fps": 30
}):
self._mode = -1
self._mode_score = 0.0
self._mode_episode_count = 0
self._frame_skip = frame_skip if frame_skip >= 1 else 1
self._random_state = rng
if game is None:
raise ValueError("Game must be provided")
self._ple = PLE(game, **ple_options)
self._ple.init()
w, h = self._ple.getScreenDims()
self._screen = np.empty((h, w), dtype=np.uint8)
self._reduced_screen = np.empty((48, 48), dtype=np.uint8)
self._actions = self._ple.getActionSet()
def reset(self, mode):
if mode == MyEnv.VALIDATION_MODE:
if self._mode != MyEnv.VALIDATION_MODE:
self._mode = MyEnv.VALIDATION_MODE
self._mode_score = 0.0
self._mode_episode_count = 0
else:
self._mode_episode_count += 1
elif self._mode != -1: # and thus mode == -1
self._mode = -1
self._ple.reset_game()
for _ in range(self._random_state.randint(15)):
self._ple.act(self._ple.NOOP)
self._screen = self._ple.getScreenGrayscale()
cv2.resize(self._screen, (48, 48),
self._reduced_screen,
interpolation=cv2.INTER_NEAREST)
return [4 * [48 * [48 * [0]]]]
def act(self, action):
action = self._actions[action]
reward = 0
for _ in range(self._frame_skip):
reward += self._ple.act(action)
if self.inTerminalState():
break
self._screen = self._ple.getScreenGrayscale()
cv2.resize(self._screen, (48, 48),
self._reduced_screen,
interpolation=cv2.INTER_NEAREST)
self._mode_score += reward
return np.sign(reward)
def summarizePerformance(self, test_data_set):
if self.inTerminalState() == False:
self._mode_episode_count += 1
print("== Mean score per episode is {} over {} episodes ==".format(
self._mode_score / self._mode_episode_count,
self._mode_episode_count))
def inputDimensions(self):
return [(4, 48, 48)]
def observationType(self, subject):
return np.float32
def nActions(self):
return len(self._actions)
def observe(self):
return [np.array(self._reduced_screen) / 256.]
def inTerminalState(self):
return self._ple.game_over()
class FlappyBirdEnv:
def __init__(self):
self.fps = 30
self.game = flappyBird()
self.env = PLE(self.game, fps=self.fps, display_screen=False) # environment interface to game
self.env.reset_game()
def reset(self, is_show = False):
self.env = PLE(self.game, fps=self.fps, display_screen=is_show) # environment interface to game
self.env.reset_game()
state = self.get_state()
return state
def act(self, action):
# return state_prime, reward, done, info
reward = self.env.act(self.env.getActionSet()[action])
# print(reward)
# Survive reward +1
# reward += 1
# Get closer to the middle of top and bottom pipe and get more reward
# state = self.game.getGameState()
# next_dis_to_mid = abs((state['next_pipe_top_y'] + state['next_pipe_bottom_y']) / 2 - state['player_y'])
# print('State')
# print(state)
# print('Mid')
# print((state['next_pipe_top_y'] + state['next_pipe_bottom_y']) / 2)
# print('next_dis_to_mid')
# print(abs((state['next_pipe_top_y'] + state['next_pipe_bottom_y']) / 2 - state['player_y']))
# next_next_dis_to_mid = abs((state['next_next_pipe_top_y'] + state['next_next_pipe_bottom_y']) / 2 - state['player_y'])
# dis_reward_coef = 0.01
# reward += dis_reward_coef * ((-next_dis_to_mid) + 0.5 * (-next_next_dis_to_mid))
state_prime = self.get_state()
is_done = self.is_over()
info = ""
return state_prime, reward, is_done, info
def get_num_actions(self):
return len(self.env.getActionSet())
def get_action_set(self):
return self.env.getActionSet()
def get_screen_rgb(self):
return self.env.getScreenRGB()
def get_screen_gray(self):
return self.env.getScreenGrayscale()
def get_num_state_features(self):
return len(self.game.getGameState())
def get_state(self):
# dict
# * player y position.
# * players velocity.
# * next pipe distance to player
# * next pipe top y position
# * next pipe bottom y position
# * next next pipe distance to player
# * next next pipe top y position
# * next next pipe bottom y position
# state = {
# "player_y": self.player.pos_y,
# "player_vel": self.player.vel,
# "next_pipe_dist_to_player": next_pipe.x - self.player.pos_x,
# "next_pipe_top_y": next_pipe.gap_start,
# "next_pipe_bottom_y": next_pipe.gap_start+self.pipe_gap,
# "next_next_pipe_dist_to_player": next_next_pipe.x - self.player.pos_x,
# "next_next_pipe_top_y": next_next_pipe.gap_start,
# "next_next_pipe_bottom_y": next_next_pipe.gap_start+self.pipe_gap
# }
state = self.game.getGameState()
state['next_pipe_top_y'] -= state['player_y']
state['next_pipe_bottom_y'] -= state['player_y']
state['next_next_pipe_top_y'] -= state['player_y']
state['next_next_pipe_bottom_y'] -= state['player_y']
return list(state.values())
def is_over(self):
return self.env.game_over()
class FlappyBirdEnv:
"""
This is the Reinforcement Learning Environment that wraps the PLE Flappy Bird Game. The RL agent
interacts with the environment by providing which action it wants to take in the current state.
The environment in turn provides the reward and the next state to agent after executing the provided
action.
"""
def __init__(self, display=False):
"""
Initializes a new environment for FlappyBird game.
"""
game = game = FlappyBird()
self._game = PLE(game, fps=30, display_screen=display)
# _display_game flag controls whether or not to render the state that is being provided by the
# environment.
self._display_game = display
if self._display_game:
self._display = self.show_img() # display sets up a cv2 window where the current state is displayed.
self._display.__next__() # iterate over the display generator.
self.NUM_ACTIONS = len(self._game.getActionSet()) # defines the number of action agent can take in the environment.
self._ACTION_MAP = {}
for i, action in enumerate(self._game.getActionSet()):
self._ACTION_MAP[i] = action
# Number contiguous images the environment provides as state. Basically at any time, the
# environment provides a stack of last 4 (including the current) images as the state to the agent.
self._IMAGE_STACK_SIZE = 4
# Dimension of the (greyscale) image provided as state.
self._PROCESSED_IMAGE_SIZE = 84
# Determines the number of times the provided action is executed before returning the next
# state.
self._SKIP_FRAMES = 4
# Used by the RL agent to set up it's CNN model.
self.STATE_SPACE = (self._PROCESSED_IMAGE_SIZE, self._PROCESSED_IMAGE_SIZE, self._IMAGE_STACK_SIZE)
self._init_states()
def _init_states(self):
"""
Initializes/Resets the states for the environment.
"""
self._image_stack = None # holds the current state, i.e., stack of 4 images.
self._score = 0
def step(self, action):
"""
Provides the next state and rewards after executing the provided action.
Args
------
`action` (int): Action to be taken from the current state.
"""
reward = 0
for i in range(self._SKIP_FRAMES):
reward += self._game.act(self._ACTION_MAP[action])
done = self._game.game_over()
self._score += reward
clipped_reward = self._clip_reward(reward)
self.grab_screen()
if self._display_game:
self._display.send(self._image_stack) # display image on the screen
return (self._image_stack.copy(), clipped_reward, done, self._score)
def _clip_reward(self, reward):
"""
Clips the provided reward between [-1, 1]
Args
----
`reward` (float): The reward that is to be clipped.
Returns
-------
A float represent the clipped reward.
"""
if reward > 1.0:
reward = 1.0
elif reward < -1.0:
reward = -1.0
return reward
def reset(self):
"""
Resets the game and provides the starting state.
Returns
-------
A numpy `_IMAGE_STACK_SIZE`-d numpy array (or greyscale image) representing the current state
of the environment
"""
self._game.reset_game()
self._init_states()
self.grab_screen()
if self._display_game:
self._display.send(self._image_stack)
return self._image_stack.copy()
def show_img(self):
'''
Show current state (`_IMAGE_STACK_SIZE` greyscale images) in an opencv window.
Returns
-------
A generator that to which the images can be sent for displaying.
'''
return utils.show_image('Model Input (4 images)')
def grab_screen(self):
"""
Grabs 1 to _IMAGE_STACK_SIZE images (depending upon whether called after reseting or not) and
adds it to the image_stack in chronological order, i.e., most recent image is the last.
"""
if self._image_stack is None:
self._image_stack = np.zeros(self.STATE_SPACE, dtype=np.uint8)
for i in range(self._IMAGE_STACK_SIZE):
self._game.act(None)
self._image_stack[:, :, i] = self.get_processed_image()
else:
self._image_stack[:, :, :self._IMAGE_STACK_SIZE-1] = self._image_stack[:, :, 1:]
self._image_stack[:, :, self._IMAGE_STACK_SIZE-1] = self.get_processed_image()
def get_processed_image(self):
"""
Fetches the current gameplay screenshot and processes it.
Returns
-------
A processed greyscale image (as numpy array) representing the current gameplay state.
"""
screen = self._game.getScreenGrayscale()
image = self.process_image(screen)
return image
def process_image(self, image):
"""
Processes the input image by performing following steps:
i. Cropping and transposing the image to obtain the Region Of Interest (ROI)
ii. Resizing the ROI to (`_PROCESSED_IMAGE_SIZE`, `_PROCESSED_IMAGE_SIZE`) dimension.
Args
----
`image` (numpy array): The image which is to be processed.
Returns
-------
A processed greyscale image (as numpy array).
"""
# Step 1.
image = image[:, :410]
image = np.transpose(image, (1, 0))
# Step 2.
image = cv2.resize(image, (self._PROCESSED_IMAGE_SIZE, self._PROCESSED_IMAGE_SIZE), interpolation=cv2.INTER_AREA)
return image
# use lower fps so we can see whats happening a little easier
game = WaterWorld(width=100, height=100, num_creeps=15)
# p = PLE(game, reward_values=rewards)
p = PLE(game, fps=30, force_fps=False, display_screen=True,
reward_values=rewards)
p.init()
actions = p.getActionSet()[:-1]
agent = Agent(len(actions))
epochs = 10000000
game_duration = 1000
for epoch in range(epochs):
p.reset_game()
for it in range(1000):
if p.game_over():
p.reset_game()
print "Finished with score:" + str(p.score())
current_state = np.array(p.getScreenGrayscale()).reshape((10000, ))
action = agent.act(np.array([current_state]))
# action = actions[np.random.randint(0, len(actions))]
reward = p.act(actions[action])
print "Current score: " + str(p.score())
print "Finished with score:" + str(p.score())
#coding:utf-8
from ple.games.pong import Pong
from ple import PLE
import numpy as np
def get_obs(env):
# game_state = env.getGameState()
# obs = list(game_state.values())
obs = env.getScreenGrayscale()/255.0
return obs.astype(np.float).ravel()
if __name__ == '__main__':
game = Pong(width=128, height=96,MAX_SCORE=11)
p = PLE(game, fps=30, display_screen=True, force_fps=True)
# 根据parl框架构建agent
print(p.getActionSet())
act_dim = len(p.getActionSet())
p.getScreenGrayscale()
game_state = p.getGameState()
print(game_state)
class Bot():
"""
This is our Test agent. It's gonna pick some actions after training!
"""
def __init__(self, lr):
self.lr = lr
self.game = Pixelcopter(width=480, height=480)
self.p = PLE(self.game, fps=60, display_screen=True)
self.actions = self.p.getActionSet()
#def pickAction(self, reward, obs):
# return random.choice(self.actions)
def frame_step(act_inp):
terminal = False
reward = self.p.act(act_inp)
if self.p.game_over():
self.p.reset_game()
terminal = True
reward = -1
else:
reward = 1
self.score = self.p.getScore()
img = self.p.getScreenGrayscale()
img = transform.resize(img, (80, 80))
img = np.ravel(exposure.rescale_intensity(img, out_range=(0, 255)))
return img, reward, terminal
def build_model(self):
print("Building the model..")
model = Sequential()
model.add(
Convolution2D(32,
8,
8,
subsample=(4, 4),
border_mode='same',
input_shape=(img_rows, img_cols,
img_channels))) #80*80*4
model.add(Activation('relu'))
model.add(Convolution2D(64, 4, 4, subsample=(2, 2),
border_mode='same'))
model.add(Activation('relu'))
model.add(Convolution2D(64, 3, 3, subsample=(1, 1),
border_mode='same'))
model.add(Activation('relu'))
model.add(Flatten())
model.add(Dense(512))
model.add(Activation('relu'))
model.add(Dense(2))
adam = Adam(lr=self.lr)
model.compile(loss='mse', optimizer=adam)
self.model = model
print("Finished building the model..")
def trainNetwork(self, mode):
D = deque()
x_t, r_0, terminal = self.frame_step(self.actions[0])
x_t = x_t / 255.0
s_t = np.stack((x_t, x_t, x_t, x_t), axis=2)
#print (s_t.shape)
#need to reshape for keras
s_t = s_t.reshape(1, s_t.shape[0], s_t.shape[1],
s_t.shape[2]) #1*80*80*4
if mode == 'Run':
OBSERVE = 999999999 #We keep observe, never train
epsilon = FINAL_EPSILON
print("Now we load weight")
self.model.load_weights("model.h5")
adam = Adam(lr=self.lr)
self.model.compile(loss='mse', optimizer=adam)
print("Weight load successfully")
else: #We go to training mode
OBSERVE = OBSERVATION
epsilon = INITIAL_EPSILON