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Chanta

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This commit is contained in:
Correl Roush 2012-08-10 20:42:52 -04:00
parent 217dfb2252
commit a4c72c860d
2 changed files with 21 additions and 0 deletions
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13
src/yaku.erl
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@ -12,6 +12,7 @@
tanyao/2,
pinfu/2,
iipeikou/2,
chanta/2,
chiitoitsu/2,
kokushi_musou/2,
ryuu_iisou/2,
@ -87,6 +88,18 @@ iipeikou(#game{}, #player{hand=#hand{melds=Melds}}) ->
Counts = [C || {_, C} <- count_unique(Chiis)],
lists:max(Counts) > 1 andalso lists:max(Counts) < 4.
%% @doc Returns true for a Chanta hand
%% All melds and the pair must include a terminal or honor tile
-spec chanta(game(), player()) -> boolean().
chanta(#game{}, #player{hand=#hand{tiles=[], melds=Melds}}) ->
Sets = [[{T#tile.suit, T#tile.value} || T <- Tiles]
|| #meld{tiles=Tiles} <- Melds],
ChantaTiles = [{T#tile.suit, T#tile.value} || T <- (?TERMINALS ++ ?HONOURS)],
lists:all(fun(Tiles) ->
(Tiles -- ChantaTiles =/= Tiles)
end,
Sets).
%% @doc Returns true for a 7-pair hand.
-spec chiitoitsu(game(), player()) -> boolean().
chiitoitsu(#game{}, #player{hand=#hand{tiles=[], melds=Melds}})

8
test/riichi_yaku_tests.erl
View file

@ -44,6 +44,14 @@ iipeikou_test() ->
#meld{type=chii, tiles=[#tile{suit=man, value=V} || V <- [6,7,8]]}]},
?assertEqual(true, yaku:iipeikou(#game{}, #player{hand=Hand, drawn={tsumo, #tile{suit=sou, value=6}}})).
chanta_test() ->
Hand = #hand{melds=[#meld{type=pair, tiles=lists:duplicate(2, #tile{suit=dragon, value=red})},
#meld{type=chii, tiles=[#tile{suit=pin, value=V} || V <- [1,2,3]]},
#meld{type=pon, tiles=[#tile{suit=sou, value=V} || V <- [1,1,1]]},
#meld{type=pon, tiles=[#tile{suit=sou, value=V} || V <- [9,9,9]]},
#meld{type=chii, tiles=[#tile{suit=man, value=V} || V <- [7,8,9]]}]},
?assertEqual(true, yaku:chanta(#game{}, #player{hand=Hand, drawn={tsumo, #tile{suit=dragon, value=red}}})).
chiitoitsu_test() ->
Hand = #hand{melds=[#meld{type=pair, tiles=lists:duplicate(2, #tile{suit=pin, value=V})} || V <- lists:seq(1,7)]},
?assertEqual(true, yaku:chiitoitsu(#game{}, #player{hand=Hand})).