Renpy ELIF语句

Question

我一直在看renpy关于如何做出选择的教程，大多数情况下，除了一件小事之外，我已经弄明白了它。

如何正确使用elif语句？我查找了一些基本的python elif语句，甚至是一个实际的站点，了解如何在renpy中使用它，但无法让它正常工作。

(我附上了我的代码的截图和我的错误，任何帮助都是非常感谢的)

下面是我的代码片段：

define e = Character("???")
$ mage = False
$ warrior = False
$ archer = False

# The game starts here.

label start:
# Show a background.

scene bg black

# This shows a character sprite. 

show weird orb

# These display lines of dialogue.

e "Welcome human, what is your name?"

python:
    name = renpy.input(_("What's your name?"))
    name = name.strip() or __("John")

define m = Character("[name]")

e "Hmm, [name] is it?"
e "That's a wonderful name!"
m "Where am I?"
e "You'll know in good time, my child."
e "For now, tell me a bit about yourself"
menu:
    e "Which of these do you prefer?"
    "Magic":
        jump magic
    "Brute Force":
        jump force
    "Archery":
        jump archery

label magic:
    e "You chose magic."
    $ mage = True
    jump enter

label force:
    e "You chose brute force."
    $ warrior = True
    jump enter

label archery:
    e "You chose archery."
    $ archer = True
    jump enter

label enter:
    if mage:
        m "I'm a mage."
    elif warrior:
        m "I'm a warrior."
    else:
        m "I'm an archer"
return

以下是错误的副本：

I'm sorry, but an uncaught exception occurred.

While running game code:
  File "game/script.rpy", line 66, in script
    if mage:
  File "game/script.rpy", line 66, in <module>
    if mage:
NameError: name 'mage' is not defined

-- Full Traceback ------------------------------------------------------------

Full traceback:
  File "game/script.rpy", line 66, in script
    if mage:
  File "C:\Users\ArceusPower101\Downloads\renpy-7.0.0-sdk\renpy\ast.py", line 1729, in execute
    if renpy.python.py_eval(condition):
  File "C:\Users\ArceusPower101\Downloads\renpy-7.0.0-sdk\renpy\python.py", line 1943, in py_eval
    return py_eval_bytecode(code, globals, locals)
  File "C:\Users\ArceusPower101\Downloads\renpy-7.0.0-sdk\renpy\python.py", line 1936, in py_eval_bytecode
    return eval(bytecode, globals, locals)
  File "game/script.rpy", line 66, in <module>
    if mage:
NameError: name 'mage' is not defined

Windows-8-6.2.9200
Ren'Py 7.0.0.196
Test 1.0
Thu Aug 23 02:06:20 2018

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Answer 1

您的代码给了您一个异常，因为这三行代码从未运行过：

$ mage = False
$ warrior = False
$ archer = False

它们不会运行，因为它们出现在start:标签之上，这是代码开始运行的地方。

有几种方法可以解决这个问题。一种方法是简单地重新排列代码，使start标签显示在这些行的上方。另一种选择是对每个赋值使用default语句：

default mage = False
default warrior = False 
default archer = False

default语句将在游戏开始和游戏加载时运行一次，但前提是变量尚未定义。