全球范围不变

Question

我有一个使用python的基于文本的游戏。我的问题是，我不能在房间之间移动，因为一个变量没有按需要改变。

我使用了global，这导致了另一个错误。守则如下：

#The dictionary links a room to other rooms and items.
rooms = {
        'Holding Cell': {'South': 'Training room','North': 'Cupboard', 'West': 'Study' },
        'Cupboard': {'South': 'Holding Cell', 'Item': 'Health Potion'},
        'Study': {'West': 'Armory', 'East': 'Holding Cell', 'Item': 'Mind key'},
        'Armory': {'East': 'Study', 'Item': 'Sword and shield'},
        'Training room': {'North': 'Holding Cell', 'East': 'Storage room', 'Item': 'Body key'},
        'Storage room': {'West': 'Training room', 'Item': 'Armor set'},
        'Prayer room': {'North': 'Dungeon Exit', 'Item': 'Soul key'},
        'Dungeon Exit': {}
    }
starting_room = 'Holding Cell'
current_room = starting_room

inventory = []
inventory1 = ['Health Potion', 'Sword and shield', 'Mind key', 'Soul key', 'Armor set', 'Body key']
inventory1.sort()
health = 100



def status():
    inventory.sort()
    print('-----------------------------')
    print("Inventory: ", inventory)
    print("Health: ", str(health))
    print("Current room: ", current_room)

def main():
    rooms = {
        'Holding Cell': {'South': 'Training room', 'North': 'Cupboard', 'West': 'Study'},
        'Cupboard': {'South': 'Holding Cell', 'Item': 'Health Potion'},
        'Study': {'West': 'Armory', 'East': 'Holding Cell', 'Item': 'Mind key'},
        'Armory': {'East': 'Study', 'Item': 'Sword and shield'},
        'Training room': {'North': 'Holding Cell', 'East': 'Storage room', 'Item': 'Body key'},
        'Storage room': {'West': 'Training room', 'Item': 'Armor set'},
        'Prayer room': {'North': 'Dungeon Exit', 'Item': 'Soul key'},
        'Dungeon Exit': {}
    }
    status()


    current_room = starting_room

    direction = input("Enter 'North/South/East/West' to move or 'Exit': ")

        # user to exit
    if direction == 'Exit':
        print("Thanks for playing!")
        exit(0)


        # a valid move
    elif direction in rooms[current_room]:
        current_room = rooms[current_room][direction]

        # invalid move
    else:
        print("Invalid Move. There's no room to the {}".format(direction))



def show_instructions():
    print("Type 'North', 'South', 'East', 'North' to go in a direction. Type 'Exit' to leave the game!")
    print("To get an item type 'Get (item).")
#provides instructions to player
show_instructions()

while 1:
    main()

Answer 1

第一个问题:在global函数中正确使用main。

def main():   
    status()

    global current_room  # <--- here
    current_room = starting_room  # this is already defined outside the function, so really isn't needed

    direction = input("Enter 'North/South/East/West' to move or 'Exit': ")

    if direction == 'Exit':
        print("Thanks for playing!")
        exit(0)
    elif direction in rooms[current_room]:
        current_room = rooms[current_room][direction]
    else:
        print("Invalid Move. There's no room to the {}".format(direction))

第二个问题:您每次都会通过current_room = starting_room函数重新设置main，而不是正确地维护您的状态。

修复似乎是删除这一行，只是提示方向输入，并让流传递到elif块。