Update chengdu_mahjong_engine.py

src/engine/chengdu_mahjong_engine.py

@@ -39,3 +39,51 @@ class ChengduMahjongEngine:
             self.state.melds[player].append(("an_gang", tile))
         else:
             raise ValueError("杠牌条件不满足")
+
+def set_missing_suit(player, missing_suit):
+    # 确定玩家的缺门
+    valid_suits = ["条", "筒", "万"]
+    if missing_suit not in valid_suits:
+        raise ValueError("缺门设置无效")
+    player.missing_suit = missing_suit
+
+
+def check_blood_battle(self):
+    if len(self.winners) >= 3 or self.state.remaining_tiles == 0:
+        self.game_over = True
+
+
+def can_win(hand):
+    # 判断是否满足胡牌条件（四组+一对）
+    from collections import Counter
+
+    # 判断缺一门
+    suits = [get_suit(tile) for tile, count in enumerate(hand) if count > 0]
+    if len(set(suits)) > 2:
+        return False  # 不满足缺一门
+
+    # 判断是否满足四组+一对
+    def is_valid_group(tiles):
+        # 判断是否为顺子、刻子或对子
+        return len(tiles) == 3 and (tiles[0] == tiles[1] == tiles[2] or
+                                    tiles[0] + 1 == tiles[1] and tiles[1] + 1 == tiles[2])
+
+    counter = Counter(hand)
+    pairs = [tile for tile, count in counter.items() if count >= 2]
+    for pair in pairs:
+        temp_hand = hand[:]
+        temp_hand[pair] -= 2
+        if is_valid_group(temp_hand):
+            return True
+    return False
+
+
+def calculate_fan(hand, melds, is_self_draw, is_cleared):
+    fan = 1  # 基本胡
+    if is_cleared:
+        fan += 2  # 清一色
+    if len(melds) >= 2:
+        fan += len(melds)  # 根据杠加番
+    if is_self_draw:
+        fan += 1  # 自摸加番
+    return fan