42 lines
1.1 KiB
Fennel
42 lines
1.1 KiB
Fennel
(local {: contains} (require :lib.table))
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(fn get-candidates [all-mills next-move]
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"a list of mills that contain next-move"
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(icollect [_ mill (ipairs all-mills)]
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(if (contains mill next-move) mill)))
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(fn any [t]
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"take a list of booleans, returns true if any of them are true"
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(accumulate [acc false
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i x (ipairs t)]
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(or acc x)))
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(fn move-mills [moves-list]
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(icollect [_ moves (ipairs moves-list)]
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(let [player (. moves 1)]
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(accumulate [acc true
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_ m (ipairs moves)]
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(and acc (not= m 0) (= player m))))))
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(fn candidate-moves [moves candidates]
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"Just turning board spaces into player moves"
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(icollect [_ spaces (ipairs candidates)]
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(icollect [_ space (ipairs spaces)]
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(. moves space))))
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(fn mill-at? [all-mills current-moves move]
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"Is there a mill at this move?"
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(->> (get-candidates all-mills move)
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(candidate-moves current-moves)
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(move-mills)
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(any)))
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{: mill-at?
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;; not for consumption,
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;; just for testing:
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: get-candidates
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: candidate-moves
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: move-mills
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: any
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}
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