Python文本游戏可启动但无法切换房间与拾取物品问题排查

问题描述 #

我正在完成一门Python脚本课程的项目，目标是制作一款收集物品后对抗最终BOSS的文本类游戏。目前游戏代码已基本完成，但测试时始终无法切换房间，也无法拾取物品。以下是我的代码，希望能得到带解释的解答，以便我理解自己的错误。

# game start


def game_insturctions(): # introducing players to game and controls
    print("You've been hired to investigate this light house")
    print("Scavenge for 6 items you'll need to complete your investigation.")
    print("Be warned of the dangers lurking beneath the light house")
    print("without all 6 items you will not make it out alive.")
    print('Movement Controls: north, south, east, west')
    print("Pick up items: Get 'item name' ")
    print("Quit Game: quit")
    print("--------------------\n")

game_insturctions() # adding list of rooms and items
rooms = {
            'Dock': {'south': 'LH exterior', 'item': 'Flashlight'},
            'LH exterior': {'north': 'Dock', 'east': 'Living Quarters'},
            'Living Quarters': {'north': 'Basement', 'east': 'Kitchen', 'south': 'Service Room', 'west': 'LH exterior', 'item' : 'Fire Axe'},
            'Basement': {'south': 'Living Quarters', 'item': 'Eldritch Horror'},
            'Kitchen': {'west': 'Kitchen', 'item': 'First Aid Kit'},
            'Service Room': {'north': 'Living Quarters', 'east': 'Watch Room', 'west': 'Lantern Room'},
            'Watch Room': {'west': 'Service Room', 'item': "Keeper's Journal"},
            'Lantern Room': {'west': 'Service Room', 'item': 'Strange Necklace'},
}

current_room = 'Dock' # starts player on dock at game start
inventory = [] # player inventory

def get_new_room(current_room, direction): # allow players to enter new rooms
    new_room = current_room
    for i in rooms:
        if i == current_room:
            if direction in rooms[i]:
                new_room = rooms[i][direction]
    return new_room

def get_item(current_room): # allow player to get items
    if 'item' in rooms[current_room]:
        return rooms[current_room]['item']
    if 'item' not in rooms[current_room]:
        return 'There is nothing to find here.' # no item message

while (current_room):
    print("You're at the", current_room) # tells current room
    print('Inventory:', inventory) # shows inventory

    item = get_item(current_room)

    if item !='Eldritch Horror':
        if current_room == 'Basement':
            print("Nothing in here.")
        if current_room != 'Basement':
            if item in inventory:
                print('You already have this item. Better check out the rest of the grounds.')
            else:
                print('You found a', item , "you should bring it along.")
                pickup = input()
                pickup = pickup.title()
                if pickup == str('Get' + item): # input for item pickup
                    inventory.append(item)
                    print('You picked up the' + item + '.')
                if pickup == 'quit':
                    print("The horror's persist.")
                    break

    if item == 'Eldritch Horror':
        if len(inventory) == 6:
            print("You have successfully defeated the horror of the lighthouse and solved the case.")
            break

        if len(inventory) != 6:
            print("You ventured into the horrors lair unprepared and thus have lost your mind to the void. Game Over...")
            break

    direction = input('Where would you like to go? ') # prompt input from the player
    direction = direction.capitalize()

    if direction == 'quit':
        print("The horror's persist.")
        break

    if (direction == 'north' or direction == 'south' or direction == 'east' or direction == 'west'):
        new_room = get_new_room(current_room, direction)
        if new_room == current_room:
            print('No where to go that way.')
        else:
            current_room = new_room

    else:
        print('No where to go that way.')

# end of code

错误原因与解释 #

1. 物品拾取失败的核心原因 #

你在判断拾取输入时用了pickup == str('Get' + item)，但玩家实际需要输入的是Get Flashlight（带空格），而代码拼接出来的是GetFlashlight（无空格），两者永远无法匹配，导致无法拾取物品。

2. 无法切换房间的核心原因 #

处理方向输入时使用了direction.capitalize()，把玩家输入的方向变成首字母大写（比如North），但房间字典中的方向键都是小写（比如'south'），导致get_new_room函数无法找到对应的方向，房间无法切换。

3. 其他影响游戏体验的问题 #

• 厨房的方向设置错误：'Kitchen': {'west': 'Kitchen', ...}，west方向指向自身，导致无法从厨房返回生活区
• 物品拾取后未从房间移除，会重复提示发现同一物品
• Basement的判断逻辑冗余：已经通过item != 'Eldritch Horror'过滤，无需再单独判断当前房间是否为Basement

修正后的完整代码 #

# game start


def game_instructions(): # 修正函数名拼写错误
    print("You've been hired to investigate this lighthouse")
    print("Scavenge for 6 items you'll need to complete your investigation.")
    print("Be warned of the dangers lurking beneath the lighthouse")
    print("without all 6 items you will not make it out alive.")
    print('Movement Controls: north, south, east, west')
    print("Pick up items: Get 'item name' ")
    print("Quit Game: quit")
    print("--------------------\n")

game_instructions() 
rooms = {
            'Dock': {'south': 'LH exterior', 'item': 'Flashlight'},
            'LH exterior': {'north': 'Dock', 'east': 'Living Quarters'},
            'Living Quarters': {'north': 'Basement', 'east': 'Kitchen', 'south': 'Service Room', 'west': 'LH exterior', 'item' : 'Fire Axe'},
            'Basement': {'south': 'Living Quarters', 'item': 'Eldritch Horror'},
            'Kitchen': {'west': 'Living Quarters', 'item': 'First Aid Kit'}, # 修正厨房west方向指向
            'Service Room': {'north': 'Living Quarters', 'east': 'Watch Room', 'west': 'Lantern Room'},
            'Watch Room': {'west': 'Service Room', 'item': "Keeper's Journal"},
            'Lantern Room': {'east': 'Service Room', 'item': 'Strange Necklace'}, # 修正灯塔室方向（原west指向错误）
}

current_room = 'Dock' 
inventory = [] 

def get_new_room(current_room, direction):
    # 简化函数逻辑，无需遍历所有房间
    if direction in rooms[current_room]:
        return rooms[current_room][direction]
    return current_room

def get_item(current_room):
    if 'item' in rooms[current_room]:
        return rooms[current_room]['item']
    return 'There is nothing to find here.'

while current_room:
    print(f"You're at the {current_room}")
    print(f'Inventory: {inventory}')

    item = get_item(current_room)

    if item != 'Eldritch Horror':
        if item in inventory:
            print('You already have this item. Better check out the rest of the grounds.')
        else:
            print(f'You found a {item}, you should bring it along.')
            pickup = input('Enter command: ')
            pickup = pickup.strip().title()
            # 修正拾取判断，加入空格
            if pickup == f'Get {item}':
                inventory.append(item)
                print(f'You picked up the {item}.')
                # 拾取后从房间移除物品，避免重复提示
                del rooms[current_room]['item']
            if pickup == 'Quit':
                print("The horror's persist.")
                break

    else:
        if len(inventory) == 6:
            print("You have successfully defeated the horror of the lighthouse and solved the case.")
            break
        else:
            print("You ventured into the horror's lair unprepared and thus have lost your mind to the void. Game Over...")
            break

    direction = input('Where would you like to go? ')
    # 改为全小写，匹配房间字典中的方向键
    direction = direction.strip().lower()

    if direction == 'quit':
        print("The horror's persist.")
        break

    if direction in ['north', 'south', 'east', 'west']:
        new_room = get_new_room(current_room, direction)
        if new_room == current_room:
            print('Nowhere to go that way.')
        else:
            current_room = new_room
    else:
        print('Invalid command. Use north/south/east/west or quit.')

# end of code

修正要点说明 #

• 修正了函数名拼写错误（game_insturctions → game_instructions）
• 调整方向输入处理为全小写，匹配房间字典的键
• 修正物品拾取的判断逻辑，加入空格匹配玩家输入
• 拾取物品后从房间中移除该物品，避免重复提示
• 修正厨房和灯塔室的方向错误，保证移动逻辑正常
• 简化get_new_room函数逻辑，无需遍历所有房间

内容的提问来源于stack exchange，提问作者Mica