Alan Gauld via Tutor wrote:
> On 15/10/18 08:57, Peter Otten wrote:
>
>> By the way, you do not need a map (dict) at all to implement a game like
>> this, you may return the next scene directly. A sketch:
>>
>> class Bridge:
>> def enter(self):
>> ...
>> action = ...
>> if action == "jump off the bridge":
>> return Death("You are eaten by the piranhas")
>> else:
>> ...
>
> That was my initial thought when I saw this but thee is one
> caveat. The original design creates a single instance of a
> scene and returns that on each access. The suggestion above
> creates a new instance on every call. So if it is important
> to use the same instance each time then the map is a
> better solution.
>
> (Although you could instead create a class variable holding
> the first instance of itself then use a class constructor
> to either create the instance or access the class variable...)
>
Or, to keep it really simple, return global class instances:
DEATH_BY_TORNADO = Death("The storm swept you off the bridge")
>> class Bridge:
>> def enter(self):
>> ...
>> action = ...
if action == "tornado":
return DEATH_BY_TORNADO
One advantage of both variants is that tools like pylint are likely to catch
spelling errors like the one that prompted the initial question.
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