Python文本类课程游戏无法移动房间/拾取物品问题求助

问题描述 #

我正在开发一个Python课程项目的文本类游戏，玩法是玩家在不同房间间移动、收集各房间物品，最终进入反派所在的最终房间即可获胜。原本房间移动功能正常，但添加物品与玩家库存更新的代码后，游戏卡在初始界面，无法切换房间或执行任何操作。我怀疑问题出在字典上，但找不到具体原因，需要排查建议。

问题代码 #

def start_menu():
    # Display instructions to game
    print('Operation Kill Hitler')
    print('You must collect 6 items before entering Hitlers bunker, '
          'or you will be discovered and killed before taking out the Fuhrer!')
    print('Instructions')
    print('move commands: go south, go north, go east, go west')
    print("Add to Inventory: get 'item name'")


# moving between rooms


def move_to_rooms(current_room, move, rooms):
    return rooms[current_room].get(move, current_room)


# add item to inventory and remove from room

def get_item(current_room, move, rooms, inventory):
    inventory.append(rooms[current_room]['item'])
    del rooms[current_room]['item']


# dictionary links a room to other rooms and items in rooms


def main():
    rooms = {
        'Guest Room': {'name': 'Guest Room', 'go west': 'Library'},
        'Library': {'name': 'Library', 'go east': 'Guest Room', 'go south': 'Main Hall', 'item': 'silencer'},
        'Main Hall': {'name': 'Main Hall', 'go west': 'Officers Quarters', 'go north': 'Library', 'go east':
            'Dining Hall', 'go south': 'Wine Cellar', 'item': 'bullets'},
        'Officers Quarters': {'name': 'Officers Quarters', 'go east': 'Main Hall', 'item': 'nazi uniform'},
        'Dining Hall': {'name': 'Dining Hall', 'go north': 'Kitchen', 'go west': 'Main Hall', 'item': 'pistol'},
        'Kitchen': {'name': 'Kitchen', 'go south': 'Dining Hall', 'item': 'smoke grenade'},
        'Wine Cellar': {'name': 'Wine Cellar', 'go north': 'Main Hall', 'go east': 'Bunker', 'item': 'glass of wine'},
        'Bunker': {'name': 'Bunker'}

    }
    start_menu()
    # list of current inventory
    inventory = []
    # starting room
    current_room = 'Guest Room'

    # Game Loop
    while True:
        # display current location and inventory
        print('You are in the {}.'.format(current_room))
        print(inventory)

        # show if there is an item in the room
        if current_room != 'Bunker' and 'item' in rooms[current_room].keys():
            print('You see the {}'.format(rooms[current_room]['item']))
            print('------------------------------')

        # handle if the user enters a command to move to a new room
        move = input('What do you do?:\n').title().split()
        if len(move) >= 2 and move[1] in rooms[current_room].keys():
            current_room = move_to_rooms(current_room, move[1], rooms)

        # handle if the user enters a command to get an item
        elif len(move) >= 2 and move[0] == 'Get' and ' '.join(move[1:]) == rooms[current_room].get('item'):
            print('You pick up the {}'.format(rooms[current_room]['item']))
            print('------------------------------')
            # get_item(current_room, move, rooms, inventory)
            continue
        # handle if the user enters an invalid command
        else:
            print('Invalid move, please try again')
            continue


main()

问题排查与修复要点 #

1. 命令大小写与格式不匹配 #

代码中使用.title().split()处理用户输入，导致输入的"go west"变成['Go', 'West']，但房间字典中的移动键是'go west'（全小写带空格），物品名也是全小写。这直接导致移动和收集物品的判断条件永远不满足，每次都触发"无效命令"提示。

修复： 将用户输入转为全小写，统一格式：

move = input('What do you do?:\n').lower().split()

2. 移动命令判断逻辑错误 #

原代码用move[1]（即方向词）去匹配房间字典中的键，但字典中的移动键是'go west'这种完整命令，不是单独的'west'。

修复： 拼接完整的移动命令字符串，再去字典中查找：

if len(move) >= 2 and move[0] == 'go':
    full_move = ' '.join(move[:2])
    if full_move in rooms[current_room]:
        current_room = move_to_rooms(current_room, full_move, rooms)

3. 物品收集判断逻辑错误 #

原代码用' '.join(move[1:])（首字母大写的物品名）和房间中的全小写物品名比较，永远不相等。

修复： 用全小写的物品名进行比较：

elif len(move) >= 2 and move[0] == 'get':
    target_item = ' '.join(move[1:])
    room_item = rooms[current_room].get('item')
    if room_item and target_item == room_item.lower():
        print(f'You pick up the {room_item}')
        print('------------------------------')
        get_item(current_room, move, rooms, inventory)
        continue

4. 激活库存更新函数 #

原代码中get_item函数被注释，导致收集物品后库存和房间物品都不会更新，取消注释即可。

5. 添加游戏结束判断 #

进入Bunker时，根据物品数量判断胜负：

# 在每次移动后检查是否进入Bunker
if current_room == 'Bunker':
    if len(inventory) >= 6:
        print('You have collected all items and defeated Hitler! Victory!')
    else:
        print('You entered the bunker without all items! Hitler discovers you and you are killed. Game Over.')
    break

修复后的完整代码 #

def start_menu():
    # Display instructions to game
    print('Operation Kill Hitler')
    print('You must collect 6 items before entering Hitlers bunker, '
          'or you will be discovered and killed before taking out the Fuhrer!')
    print('Instructions')
    print('move commands: go south, go north, go east, go west')
    print("Add to Inventory: get 'item name'")


# moving between rooms
def move_to_rooms(current_room, move, rooms):
    return rooms[current_room].get(move, current_room)


# add item to inventory and remove from room
def get_item(current_room, rooms, inventory):
    inventory.append(rooms[current_room]['item'])
    del rooms[current_room]['item']


# dictionary links a room to other rooms and items in rooms
def main():
    rooms = {
        'Guest Room': {'name': 'Guest Room', 'go west': 'Library'},
        'Library': {'name': 'Library', 'go east': 'Guest Room', 'go south': 'Main Hall', 'item': 'silencer'},
        'Main Hall': {'name': 'Main Hall', 'go west': 'Officers Quarters', 'go north': 'Library', 'go east':
            'Dining Hall', 'go south': 'Wine Cellar', 'item': 'bullets'},
        'Officers Quarters': {'name': 'Officers Quarters', 'go east': 'Main Hall', 'item': 'nazi uniform'},
        'Dining Hall': {'name': 'Dining Hall', 'go north': 'Kitchen', 'go west': 'Main Hall', 'item': 'pistol'},
        'Kitchen': {'name': 'Kitchen', 'go south': 'Dining Hall', 'item': 'smoke grenade'},
        'Wine Cellar': {'name': 'Wine Cellar', 'go north': 'Main Hall', 'go east': 'Bunker', 'item': 'glass of wine'},
        'Bunker': {'name': 'Bunker'}
    }
    start_menu()
    # list of current inventory
    inventory = []
    # starting room
    current_room = 'Guest Room'

    # Game Loop
    while True:
        # display current location and inventory
        print(f'You are in the {current_room}.')
        print(f'Inventory: {inventory}')

        # show if there is an item in the room
        if current_room != 'Bunker' and 'item' in rooms[current_room]:
            print(f'You see the {rooms[current_room]["item"]}')
            print('------------------------------')

        # handle user input
        move = input('What do you do?:\n').lower().split()

        # handle move commands
        if len(move) >= 2 and move[0] == 'go':
            full_move = ' '.join(move[:2])
            if full_move in rooms[current_room]:
                current_room = move_to_rooms(current_room, full_move, rooms)
                # Check if entered Bunker after moving
                if current_room == 'Bunker':
                    if len(inventory) >= 6:
                        print('You have collected all items and defeated Hitler! Victory!')
                    else:
                        print('You entered the bunker without all items! Hitler discovers you and you are killed. Game Over.')
                    break
                continue
            else:
                print('Invalid move, please try again')
                continue

        # handle get item commands
        elif len(move) >= 2 and move[0] == 'get':
            target_item = ' '.join(move[1:])
            room_item = rooms[current_room].get('item')
            if room_item and target_item == room_item.lower():
                print(f'You pick up the {room_item}')
                print('------------------------------')
                get_item(current_room, rooms, inventory)
                continue
            else:
                print('That item is not here or invalid command!')
                continue

        # handle invalid commands
        else:
            print('Invalid move, please try again')
            continue


main()

内容的提问来源于stack exchange，提问作者Russell Sweeten