1

1

src/engine/dizhu/dizhu_engine.py

@@ -12,6 +12,7 @@ class DiZhuEngine:
         self.landlord_index = -1  # 地主索引
         self.current_player_index = 0  # 当前玩家索引
         self.landlord_cards = []  # 地主牌
+        self.last_player = None  # 最后出牌的玩家索引
         self.current_pile = None  # 当前牌面上的牌
         self.game_over = False  # 是否游戏结束
 
@@ -47,39 +48,40 @@ class DiZhuEngine:
         return current_player
 
     def step(self, action):
-        """执行动作并更新状态"""
+        """
+        执行动作并更新状态
+        :param action: 当前玩家的动作（可以是 'pass' 或一个动作列表）
+        """
         current_player = self.get_current_player()
 
         if action == "pass":
             logger.info(f"玩家 {self.current_player_index + 1} 选择过牌")
             self.pass_count += 1
-            current_player.history.append([])
-            if self.pass_count == 2:  # 所有玩家连续过牌
-                self.current_pile = None
-                logger.info("所有玩家连续过牌，清空牌面")
+
+            # 如果所有其他玩家都过牌，允许最后出牌玩家再次出牌
+            if self.pass_count == 2:  # 两名玩家连续过牌
+                self.current_player_index = self.last_player
+                self.pass_count = 0  # 重置过牌计数
+                self.current_pile = None  # 清空当前牌面
+                logger.info(f"所有玩家过牌，玩家 {self.current_player_index + 1} 可以继续出牌")
         else:
-            # 确保动作是一个列表（可以是多张牌）
+            # 出牌逻辑
             if not isinstance(action, list):
                 action = [action]
 
-            # 检查出牌是否在手牌中
             if not all(card in current_player.hand_cards for card in action):
                 logger.error(f"玩家 {self.current_player_index + 1} 的动作非法: {action}")
                 raise ValueError(f"玩家手牌不足以完成此次出牌: {action}")
 
-            # 检查牌型是否合法
-            if not detect_card_type(action):
-                logger.error(f"玩家 {self.current_player_index + 1} 出牌不合法: {action}")
-                raise ValueError(f"出牌牌型非法: {action}")
-
-            # 检查是否能打过当前牌面
             if self.current_pile and not self._can_beat(self.current_pile, action):
-                logger.error(f"玩家 {self.current_player_index + 1} 出牌无法打过当前牌面: {action}")
+                logger.error(f"玩家 {self.current_player_index + 1} 出牌非法: {action}")
                 raise ValueError(f"出牌无法打过当前牌面: {action}")
 
             # 出牌成功
-            self.pass_count = 0
-            self.current_pile = action  # 更新牌面
+            self.current_pile = action  # 更新当前牌面
+            self.pass_count = 0  # 出牌后重置过牌计数
+            self.last_player = self.current_player_index  # 更新最后出牌的玩家
+
             logger.info(f"玩家 {self.current_player_index + 1} 出牌: {[card_to_string(card) for card in action]}")
 
             # 从手牌中移除
@@ -97,6 +99,7 @@ class DiZhuEngine:
         self.current_player_index = (self.current_player_index + 1) % 3
         logger.info(f"切换到玩家 {self.current_player_index + 1}")
 
+
     def get_action_space(self):
         """
         动态生成当前动作空间。
@@ -126,7 +129,6 @@ class DiZhuEngine:
                     valid_combinations.append(list(combo))
         return valid_combinations
 
-
     def _can_beat(self, current_pile, action):
         """
         检查当前动作是否能打过牌面上的牌。
@@ -177,3 +179,30 @@ class DiZhuEngine:
         logger.info(f"当前玩家索引: {self.current_player_index}")
         logger.info(f"游戏是否结束: {self.game_over}")
         return state
+
+    def is_valid_play(self, cards):
+        """
+        检查给定的牌是否为合法的斗地主牌型。
+        :param cards: 玩家出的牌（列表）
+        :return: True 如果是合法牌型，否则 False
+        """
+        if len(cards) == 1:
+            return True  # 单牌
+        if len(cards) == 2 and cards[0] == cards[1]:
+            return True  # 对子
+        if len(cards) == 3 and cards[0] == cards[1] == cards[2]:
+            return True  # 三张
+        if len(cards) == 4:
+            counts = {card: cards.count(card) for card in set(cards)}
+            if 3 in counts.values():
+                return True  # 三带一
+            if all(count == 4 for count in counts.values()):
+                return True  # 炸弹
+        if len(cards) >= 5:
+            # 顺子
+            sorted_cards = sorted(cards)
+            if all(sorted_cards[i] + 1 == sorted_cards[i + 1] for i in range(len(sorted_cards) - 1)):
+                return True
+        # TODO: 扩展支持更多牌型（如连对、飞机等）
+        return False
+

src/environment/dizhu_env.py

@@ -1,56 +1,73 @@
 import gym
 import numpy as np
 from gym import spaces
-from src.engine.dizhu.dizhu_engine import DiZhuEngine  # 引入地主引擎
+from src.engine.dizhu.dizhu_engine import DiZhuEngine  # 引入斗地主引擎
+from loguru import logger
+
 
 class DouDiZhuEnv(gym.Env):
     def __init__(self):
         super(DouDiZhuEnv, self).__init__()
         self.engine = DiZhuEngine()  # 初始化斗地主引擎
-        self.action_space = spaces.Discrete(55)  # 假设最大动作空间为 55，表示可能的出牌和过牌
+
+        # 定义初始动作空间和观察空间
+        self.action_space = spaces.Discrete(55)  # 假设最大动作空间为 55
         self.observation_space = spaces.Dict({
             "hand_cards": spaces.Box(low=0, high=1, shape=(54,), dtype=np.int32),  # 玩家手牌（独热编码）
             "history": spaces.Box(low=0, high=1, shape=(54,), dtype=np.int32),  # 出牌历史
+            "current_pile": spaces.Box(low=0, high=1, shape=(54,), dtype=np.int32),  # 当前牌面上的牌
+            "current_player": spaces.Discrete(3),  # 当前玩家索引
         })
 
     def reset(self):
         """重置游戏环境"""
         self.engine.reset()
+        logger.info("斗地主环境已重置")
         return self._get_observation()
 
     def step(self, action):
         """执行动作并更新环境"""
         try:
             reward = 0  # 初始化奖励
-            if action == 0:
-                # 玩家选择过牌
+            current_player = self.engine.get_current_player()
+            logger.info(f"当前玩家: 玩家 {self.engine.current_player_index + 1} 手牌: {current_player.get_hand_cards_as_strings()}")
+
+            if action == 0:  # 过牌
+                logger.info(f"玩家 {self.engine.current_player_index + 1} 选择过牌")
                 self.engine.step("pass")
                 reward -= 0.5  # 对频繁过牌给予轻微惩罚
             else:
                 # 玩家选择出牌
-                card_index = action - 1  # 动作索引 1-54 对应 54 张牌
-                previous_hand_count = len(self.engine.get_current_player().hand_cards)  # 出牌前手牌数
-                self.engine.step([card_index])  # 执行动作
-                current_hand_count = len(self.engine.get_current_player().hand_cards)  # 出牌后手牌数
+                action_cards = self._decode_action(action)  # 解码动作为具体的牌型
+                logger.info(f"玩家 {self.engine.current_player_index + 1} 选择出牌: {action_cards}")
 
-                # 奖励根据减少的手牌数量计算
+                # 出牌前的手牌数量
+                previous_hand_count = len(current_player.hand_cards)
+
+                # 尝试执行动作
+                self.engine.step(action_cards)
+
+                # 出牌后的手牌数量
+                current_hand_count = len(current_player.hand_cards)
+
+                # 根据减少的手牌数量计算奖励
                 reward += (previous_hand_count - current_hand_count) * 1.0
 
             # 检查游戏是否结束
             done = self.engine.game_over
             if done:
-                # 胜利时给予较大的奖励
-                reward += 10
+                reward += 10  # 胜利时给予较大的奖励
+                logger.info(f"游戏结束！胜利玩家: {self.engine.current_player_index + 1}")
 
             return self._get_observation(), reward, done, {}
 
         except ValueError as e:
             # 对无效动作设置较大的负奖励
-            reward -= 5
-            return self._get_observation(), reward, False, {"error": str(e)}
+            logger.error(f"无效动作: {e}")
+            return self._get_observation(), -5, False, {"error": str(e)}
 
     def _get_observation(self):
-        """获取当前玩家的状态"""
+        """获取当前玩家的观察空间"""
         current_player = self.engine.get_current_player()
 
         # 手牌的独热编码
@@ -66,12 +83,65 @@ class DouDiZhuEnv(gym.Env):
                     history[card] = 1
             elif isinstance(play, int):  # 如果是单个牌
                 history[play] = 1
-            else:
-                raise ValueError(f"历史记录格式错误: {play}")
 
-        return {"hand_cards": hand_cards, "history": history}
+        # 当前牌面的独热编码
+        current_pile = np.zeros(54, dtype=np.int32)
+        if self.engine.current_pile:
+            for card in self.engine.current_pile:
+                current_pile[card] = 1
+
+        return {
+            "hand_cards": hand_cards,
+            "history": history,
+            "current_pile": current_pile,
+            "current_player": self.engine.current_player_index,
+        }
+
+    def _decode_action(self, action):
+        """
+        解码动作为具体的牌型。
+        :param action: 动作索引
+        :return: 解码后的牌型
+        """
+        valid_actions = self.get_action_space()
+        if action < len(valid_actions):
+            return valid_actions[action]
+        else:
+            raise ValueError(f"非法动作索引: {action}")
 
     def render(self, mode="human"):
         """打印当前游戏状态"""
         state = self.engine.get_game_state()
         print(state)
+
+    def get_action_space(self):
+        """
+        动态生成当前合法的动作空间。
+        返回一个合法动作的列表，其中:
+        - 索引 0 表示过牌。
+        - 其余索引表示具体的出牌动作。
+        """
+        current_player = self.engine.get_current_player()
+        hand_cards = current_player.hand_cards
+
+        # 所有合法出牌组合
+        valid_actions = [["pass"]]  # 索引 0 表示过牌
+        valid_actions.extend(self._generate_valid_combinations(hand_cards))
+        return valid_actions
+
+    def _generate_valid_combinations(self, hand_cards):
+        """
+        根据手牌生成所有合法牌型组合。
+        :param hand_cards: 当前玩家的手牌
+        :return: 所有合法的牌型组合
+        """
+        from itertools import combinations
+        valid_combinations = []
+
+        # 示例：生成单牌、对子和三张的合法组合
+        for i in range(1, len(hand_cards) + 1):
+            for combo in combinations(hand_cards, i):
+                if self.engine.is_valid_play(list(combo)):  # 检查是否为合法牌型
+                    valid_combinations.append(list(combo))
+
+        return valid_combinations