https://github.com/dwb/koenigsrufen-haskell

A model of the game of Königsrufen in Haskell
https://github.com/dwb/koenigsrufen-haskell

Last synced: about 1 year ago
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A model of the game of Königsrufen in Haskell

• Host: GitHub
• URL: https://github.com/dwb/koenigsrufen-haskell
• Owner: dwb
• License: lgpl-3.0
• Created: 2015-03-05T21:50:18.000Z (over 11 years ago)
• Default Branch: master
• Last Pushed: 2020-03-22T13:36:32.000Z (over 6 years ago)
• Last Synced: 2025-03-30T22:16:48.684Z (over 1 year ago)
• Language: Haskell
• Size: 15.6 KB
• Stars: 2
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.mkd
  • License: LICENSE

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README

          
# Königsrufen in Haskell

[The game of Königsrufen](https://stompydan.net/koenigsrufen) is rather good fun, and I wanted an excuse to write some Haskell, so I've started to model it here. it doesn't play a full game yet, I will add to it when time and energy allows. The idea is that it will be a library and computer player for the game.

The only major problem I've had so far is in how to deal with different implementations of a player. Currently I have a `PromptPlayer`, which prompts a human in the terminal for actions, and a `BotPlayer` which computes actions itself. They both have instances of the `Player` typeclass. Getting GHC to be happy with me having a heterogenous `Map` of player positions to `Player`-instance ADTs, and for the game to find the instance through the various calls, was a bit of a job for a relative Haskell newcomer! And in GHC 7.8, I found I needed the `ImpredicativeTypes` language extension. This extention doesn't seem to have much favour in the community, so it'd be nice to improve the implementation. Suggestions very welcome.

Other than that, I think it's pretty straight-forward. It's a bit of a playground at the moment. Lenses weren't strictly necessary but look a lot prettier once you can read the flashy operators.