AttributeError: 'int'对象没有属性'directions

Question

我更新了代码，让它看起来和我电脑上的一模一样。

我正在开发一个简单的Python文字冒险游戏引擎，但遇到了一些问题。如果你能帮我解决这个问题，或者有更好的方法来编写或组织一个方法或类，请告诉我！我对这些还很陌生，任何建议都非常欢迎！另外，格式可能不太好，但我尽力了！

好的，我的项目有两个模块，分别叫做 Game 和 Map。第一个模块 Game 负责“解析”用户输入，并改变玩家所在的房间。第二个模块 Map 定义了一个 Room 类，里面有一个构造函数和一些与方向、出口等相关的函数。我还没有解决进入一个不存在的房间的问题，我知道我的代码可能写得很糟糕，但这是我的代码：

---

错误信息

>>> ================================ RESTART ================================
>>> 
You are in a small, cramped space.
It is cold and dark. There is a door to your North.

 > Go North

Traceback (most recent call last):
  File "C:\Users\Spencer\Documents\Python\Game.py", line 25, in <module>
    currentRoom = currentRoom.directions[0]
AttributeError: 'int' object has no attribute 'directions'
>>> 

---

Game 模块

# It is the main engine for PyrPG
import Map

currentRoom = Map.currentRoom

def updateGame():
    currentRoom.displayName()
def invalidCommand():
    print("Invalid command. Try again.")
while(True):
    updateGame()
    command = input(" > ")
    print()
    
    partition = command.partition("Go" or "go" or "Take" or "take")
    action = partition[1]
    item = partition[2]
    if(action == "Go" or "go"):
        if(item == " North" or " north"):
            currentRoom = currentRoom.directions[0]
        if(item == " East" or " east"):
            currentRoom = currentRoom.directions[0]
        if(item == " South" or " south"):
            currentRoom = currentRoom.directions[0]
        if(item == " West" or " west"):
            currentRoom = currentRoom.directions[0]
    else:
        print("Invalid command.")

        

---

Map 模块

# It handles rooms.
class Room:
    rmCount = 0
    directions = [0, 0, 0, 0]
    
    def __init__(self, name, description):
        # Name and description
        self.name = name
        self.description = description

        # Directions
        self.directions = None
        self.canNorth = False
        self.canWest = False
        self.canSouth = False
        self.canEast = False

        # Increase room count
        Room.rmCount += 1
        
    def displayName(self):
        print(self.name)
        print(self.description)
        print()

    def displayDirections(self, directions):
        # Check directions, modify booleans
        if(self.directions[0] != 0):
            self.canNorth = True
            gNorth = "North"
        else:
            gNorth = ""
        if(self.directions[1] != 0):
            self.canEast = True
            gEast = "East"
        else:
            gEast = ""
        if(self.directions[2] != 0):
            self.canSouth = True
            gSouth = "South"
        else:
            gSouth = ""
        if(self.directions[3] != 0):
            self.canWest = True
            gWest = "West"
        else:
            gWest = ""

        print("Directions:", gNorth, gEast, gSouth, gWest)

    def setDirections(self, directions):
        self.directions = directions

    def displayInfo():
        displayName()
        displayDirections()

introRoom = Room("Welcome to the Cave.", "To start the game, type \"Go North\"")
storageCloset = Room("You are in a small, cramped space.", "It is cold and dark. There is a door to your North.")
mainOffice = Room("the main office.", "It is cold and empty.")
currentRoom = storageCloset

introRoom.setDirections([storageCloset, 0, 0, 0])
storageCloset.setDirections([mainOffice, 0, 0, 0])
mainOffice.setDirections([0, 0, storageCloset, 0])

---

再次强调，如果你看到什么很糟糕的地方，请告诉我！这是我第一次独立写项目，没有任何指导。谢谢！

Answer 1

我对 Map.py 进行了修改，让它变得更灵活了一些：

class CaseInsensitiveDict(dict):
    def __getitem__(self, key):
        return dict.__getitem__(self, key.lower())
    def __setitem__(self, key, value):
        return dict.__setitem__(self, key.lower(), value)

# room index
all_rooms = CaseInsensitiveDict()

class Room:
    def __init__(self, name, description):
        all_rooms[name] = self   # add to index
        self.name = name
        self.description = description
        self.dirs = CaseInsensitiveDict()

    def add_dir(self, dir, room_name):
        self.dirs[dir] = all_rooms[room_name]

    @property
    def directions(self):
        return "From here you can go: " + ", ".join(sorted(self.dirs.keys())) + "\n"

    def go(self, dir):
        try:
            next_room = self.dirs[dir]
            print(next_room)
            return next_room
        except KeyError:
            print("You can't go {} from here.\n".format(dir))
            return self

    def __str__(self):
        return (
            self.name + "\n" +
            self.description + "\n"
        )

def make_link(dir_a, room_a, dir_b, room_b):
    if dir_b:
        all_rooms[room_a].add_dir(dir_b, room_b)
    if dir_a:
        all_rooms[room_b].add_dir(dir_a, room_a)

你可以像这样使用它

Room("Small closet", "You are in a small, cramped space. It is cold and dark. There is a door to your North.")
Room("Dusty office", "This must be the main office. It is still cold and dark. There is a door marked 'Supplies' to the South, and a set of double doors to the East.")
Room("Foyer", "Blah blah")

make_link("North", "Dusty office", "South", "Small closet")
make_link("East", "Foyer", "West", "Dusty office")

here = all_rooms["small closet"]

然后

>>> print(here)
Small closet
You are in a small, cramped space. It is cold and dark. There is a door to your North.

>>> here = here.go("north")
Dusty office
This must be the main office. It is still cold and dark. There is a door marked 'Supplies' to the South, and a set of double doors to the East.

>>> here = here.go("north")
You can't go north from here.

>>> print(here.directions)
From here you can go: east, south

>>> here = here.go("east")
Foyer
Blah blah

Answer 2

问题出在这里...

if(item == " North" or " north"):

这种方式来测试条件是不对的。

你需要做的是

if (item == " North") or (item == " north"):

还要看看其他地方，你使用“或”来检查条件的地方。

Answer 3

我看到你有两个主要的bug，还有一些不是bug但也不好的地方，可能还有更多我没注意到的问题。下面是主要的bug。

问题 1:

partition = command.partition("Go" or "go" or "Take" or "take")

or的用法不是这样子的。这个不会尝试用四个可能的参数去调用command.partition。相反，

"Go" or "go" or "Take" or "take"

它会直接变成"Go"，然后调用就变成了

partition = command.partition("Go")

这个问题在你每次使用or的时候都会出现。最大的影响是在if条件中，这会导致if总是被执行。

问题 2:

currentRoom = currentRoom.directions[0]

有四行代码都是这样写的。每一行都选了同一个directions元素。它们不应该这样；每一行应该选择不同的方向。