项目：文字冒险游戏（下）

class Game:
    def __init__(self):
        self.create_world()
        self.player = Player("勇者", self.start_room)
        self.running = True

    def create_world(self):
        hall = Room("大厅", "古老的大厅，墙上挂着剑")
        garden = Room("花园", "美丽的花园，有一口井")
        cave = Room("洞穴", "黑暗的洞穴，金光闪烁")
        hall.add_exit("东", garden)
        garden.add_exit("西", hall)
        garden.add_exit("北", cave)
        cave.add_exit("南", garden)
        hall.add_item("剑")
        garden.add_item("钥匙")
        self.start_room = hall

    def parse_command(self, cmd):
        parts = cmd.strip().split()
        if not parts:
            return
        verb = parts[0]
        if verb == "看":
            self.player.current.look()
        elif verb == "去" and len(parts) > 1:
            self.player.go(parts[1])
        elif verb == "拿" and len(parts) > 1:
            self.player.take(parts[1])
        elif verb == "背包":
            print(f"背包：{self.player.inventory or "空"}")
        elif verb == "退出":
            self.running = False
            print("再见！")
        else:
            print("命令：看/去 方向/拿 物品/背包/退出")

# 演示（自动执行命令）
game = Game()
for cmd in ["看", "拿 剑", "去 东", "看", "拿 钥匙", "背包"]:
    print(f"> {cmd}")
    game.parse_command(cmd)