[Haskell-cafe] Simple game: a monad for each player

[Yves Parès]

Thanks,
I looked at the operational package (since it seemed simpler).
I see its interest when building sets of operations.
I think I see how I could apply it to my current problem. I saw in the
tutorial the sentence: "The ability to write multiple interpreters is also
very useful for implementing games, specifically to account for both human
and computer opponents as well as replaying a game from a script."
So I'm supposed to write 2 functions, one interpretHuman (running in IO, and
prompting the user), and one interpretAI (running in Identity)?

Are there examples of such games using operational?


Heinrich Apfelmus wrote:
> 
> Gwern Branwen wrote:
>> Yves Parès <limestrael at gmail.com> wrote:
>>> [...]
>>> But when running the game, the program cannot "switch" from a player's
>>> monad
>>> to another.
>>>
>>> Do you have any suggestion?
>> 
>> Your desires remind me of the MonadPrompt package
>> <http://hackage.haskell.org/package/MonadPrompt>, which IIRC, has been
>> used in some game demos to provide abstraction from IO/test
>> harness/pure AI etc.
> 
> The game demo can be found by chasing links from the package
> documentation:
> 
>    http://int-e.home.tlink.de/haskell/solitaire.tar.gz
> 
> 
> There's also my package "operational"
> 
>    http://hackage.haskell.org/package/operational
> 
> which implements the same concept. It's throughly explained here:
> 
>    http://apfelmus.nfshost.com/articles/operational-monad.html
>    http://projects.haskell.org/operational/
> 
> 
> Regards,
> Heinrich Apfelmus
> 
> --
> http://apfelmus.nfshost.com
> 
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> 


-----
Yves Parès

Live long and prosper
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