def test_step(self):
game = Game()
state, _ = game.init_game()
action = state['actions'][0]
state, next_player_id = game.step(action)
next_player = game.players[next_player_id]
player_id = get_upstream_player_id(next_player, game.players)
self.assertEqual(state['trace'][0][0], player_id)
self.assertEqual(state['trace'][0][1], action)
def test_init_game(self):
game = Game()
state, current_player = game.init_game()
total_cards = list(state['current_hand'] + state['others_hand'])
total_cards.sort(key=functools.cmp_to_key(doudizhu_sort_str))
deck = list(game.round.deck_str)
self.assertEqual(state['self'], current_player)
self.assertEqual(state['landlord'], current_player)
self.assertIs(len(state['played_cards']), 0)
self.assertEqual(len(total_cards), 54)
self.assertListEqual(total_cards, deck)
def test_proceed_game(self):
game = Game()
state, player_id = game.init_game()
while not game.is_over():
action = np.random.choice(list(state['actions']))
state, next_player_id = game.step(action)
player = game.players[player_id]
self.assertEqual(get_downstream_player_id(player, game.players),
next_player_id)
player_id = next_player_id
if not game.is_over():
self.assertIsNotNone(state['actions'])
for player_id in range(3):
state = game.get_state(player_id)
self.assertIsNone(state['actions'])
def test_step_back(self):
#case 1: action, stepback
game = Game(allow_step_back=True)
state, player_id = game.init_game()
action = state['actions'][0]
playable_cards = game.judger.playable_cards
game.step(action)
game.step_back()
self.assertEqual(game.judger.playable_cards, playable_cards)
self.assertEqual(game.round.greater_player, None)
self.assertEqual(game.round.current_player, player_id)
self.assertEqual(len(game.history), 0)
game.state['actions'].sort()
state['actions'].sort()
self.assertEqual(game.state, state)
self.assertEqual(game.step_back(), False)
#case 2: action, pass, stepback
game = Game(allow_step_back=True)
state, player_id = game.init_game()
action = state['actions'][0]
game.step(action)
actions = game.state['actions']
playable_cards = game.judger.playable_cards
played_cards = game.players[game.round.current_player].played_cards
game.step('pass')
game.step_back()
#judger.playable_cards should be the same
self.assertEqual(game.judger.playable_cards, playable_cards)
#players[current_player].played_cards should be the same
self.assertEqual(game.players[game.round.current_player].played_cards,
played_cards)
#greater_player should be the same
self.assertEqual(game.round.greater_player.player_id, 0)
actions.sort()
game.state['actions'].sort()
#actions should be the same after step_back()
self.assertEqual(game.state['actions'], actions)
#case 3: action, pass, pass, action, stepback
game = Game(allow_step_back=True)
state, player_id = game.init_game()
action = state['actions'][0]
game.step(action)
game.step('pass')
game.step('pass')
actions = game.state['actions']
playable_cards = game.judger.playable_cards
played_cards = game.players[game.round.current_player].played_cards
game.step(actions[0])
game.step_back()
#judger.playable_cards should be the same
self.assertEqual(game.judger.playable_cards, playable_cards)
#players[current_player].played_cards should be the same
self.assertEqual(game.players[game.round.current_player].played_cards,
played_cards)
#greater_player should be the same
self.assertEqual(game.round.greater_player.player_id, 0)
actions.sort()
game.state['actions'].sort()
#actions should be the same after step_back()
self.assertEqual(game.state['actions'], actions)
game.step_back()
#greater_player should be the same
self.assertEqual(game.round.greater_player.player_id, 0)
def test_get_player_id(self):
game = Game()
_, player_id = game.init_game()
current_player_id = game.get_player_id()
self.assertEqual(current_player_id, player_id)
def test_get_action_num(self):
game = Game()
action_num = game.get_action_num()
self.assertEqual(action_num, 309)
def test_get_player_num(self):
game = Game()
player_num = game.get_player_num()
self.assertEqual(player_num, 3)
class DoudizhuEnv(Env):
''' Doudizhu Environment
'''
def __init__(self, config):
self.game = Game()
super().__init__(config)
self.state_shape = [6, 5, 15]
def _extract_state(self, state):
''' Encode state
Args:
state (dict): dict of original state
Returns:
numpy array: 6*5*15 array
6 : current hand
the union of the other two players' hand
the recent three actions
the union of all played cards
'''
obs = np.zeros((6, 5, 15), dtype=int)
for index in range(6):
obs[index][0] = np.ones(15, dtype=int)
encode_cards(obs[0], state['current_hand'])
encode_cards(obs[1], state['others_hand'])
for i, action in enumerate(state['trace'][-3:]):
if action[1] != 'pass':
encode_cards(obs[4-i], action[1])
if state['played_cards'] is not None:
encode_cards(obs[5], state['played_cards'])
extracted_state = {'obs': obs, 'legal_actions': self._get_legal_actions()}
if self.allow_raw_data:
extracted_state['raw_obs'] = state
# TODO: state['actions'] can be None, may have bugs
if state['actions'] == None:
extracted_state['raw_legal_actions'] = []
else:
extracted_state['raw_legal_actions'] = [a for a in state['actions']]
if self.record_action:
extracted_state['action_record'] = self.action_recorder
return extracted_state
def get_payoffs(self):
''' Get the payoffs of players. Must be implemented in the child class.
Returns:
payoffs (list): a list of payoffs for each player
'''
return self.game.judger.judge_payoffs(self.game.round.landlord_id, self.game.winner_id)
def _decode_action(self, action_id):
''' Action id -> the action in the game. Must be implemented in the child class.
Args:
action_id (int): the id of the action
Returns:
action (string): the action that will be passed to the game engine.
'''
abstract_action = ACTION_LIST[action_id]
# without kicker
if '*' not in abstract_action:
return abstract_action
# with kicker
legal_actions = self.game.state['actions']
specific_actions = []
kickers = []
for legal_action in legal_actions:
for abstract in SPECIFIC_MAP[legal_action]:
main = abstract.strip('*')
if abstract == abstract_action:
specific_actions.append(legal_action)
kickers.append(legal_action.replace(main, '', 1))
break
# choose kicker with minimum score
player_id = self.game.get_player_id()
kicker_scores = []
for kicker in kickers:
score = 0
for action in self.game.judger.playable_cards[player_id]:
if kicker in action:
score += 1
kicker_scores.append(score+CARD_RANK_STR.index(kicker[0]))
min_index = 0
min_score = kicker_scores[0]
for index, score in enumerate(kicker_scores):
if score < min_score:
min_score = score
min_index = index
return specific_actions[min_index]
def _get_legal_actions(self):
''' Get all legal actions for current state
Returns:
legal_actions (list): a list of legal actions' id
'''
legal_action_id = []
legal_actions = self.game.state['actions']
if legal_actions:
for action in legal_actions:
for abstract in SPECIFIC_MAP[action]:
action_id = ACTION_SPACE[abstract]
if action_id not in legal_action_id:
legal_action_id.append(action_id)
return legal_action_id
def __init__(self, config):
self.game = Game()
super().__init__(config)
self.state_shape = [6, 5, 15]