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More yaku
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parent
050f3c11eb
commit
0c58354f95
2 changed files with 118 additions and 2 deletions
64
src/yaku.erl
64
src/yaku.erl
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@ -20,6 +20,12 @@
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san_kan_tsu/2,
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toi_toi/2,
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san_an_kou/2,
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shou_san_gen/2,
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honrouto/2,
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honitsu/2,
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jun_chan/2,
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ryanpeikou/2,
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chinitsu/2,
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kokushi_musou/2,
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ryuu_iisou/2,
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dai_san_gen/2]).
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@ -91,8 +97,8 @@ count_unique(L) ->
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-spec iipeikou(game(), player()) -> boolean().
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iipeikou(#game{}, #player{hand=#hand{melds=Melds}}) ->
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Chiis = [M || M = #meld{type=chii} <- Melds],
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Counts = [C || {_, C} <- count_unique(Chiis)],
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lists:max(Counts) > 1 andalso lists:max(Counts) < 4.
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Counts = [C || {_, C} <- count_unique(Chiis), C == 2],
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length(Counts) == 1.
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%% @doc Returns true for a Chanta hand
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%% All melds and the pair must include a terminal or honor tile
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@ -164,6 +170,23 @@ san_an_kou(#game{}, #player{hand=#hand{melds=Melds}}) ->
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lists:member(T, [pon,kan])],
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length(ClosedPons) =:= 3.
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%% @doc Returns true for a Shou san gen hand
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shou_san_gen(#game{}, #player{hand=#hand{melds=Melds}}) ->
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Pons = [M || M = #meld{type=Type, tiles=[#tile{value=Value}|_]} <- Melds,
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lists:member(Type, [pon, kan]),
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lists:member(Value, [red, green, white])],
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Pairs = [M || M = #meld{type=Type, tiles=[#tile{value=Value}|_]} <- Melds,
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Type == pair,
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lists:member(Value, [red, green, white])],
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length(Pons) == 2 andalso length(Pairs) == 1.
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%% @doc Returns true for a Honrouto hand
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honrouto(#game{}, #player{hand=Hand}) ->
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IsHonour = fun(T) ->
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lists:member(T, ?HONOURS ++ ?TERMINALS)
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end,
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lists:all(IsHonour, riichi_hand:tiles(Hand)).
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%% @doc Returns true for a 7-pair hand.
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-spec chiitoitsu(game(), player()) -> boolean().
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chiitoitsu(#game{}, #player{hand=#hand{tiles=[], melds=Melds}})
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@ -171,6 +194,43 @@ chiitoitsu(#game{}, #player{hand=#hand{tiles=[], melds=Melds}})
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Pairs = [S || S <- Melds, S#meld.type =:= pair],
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length(Pairs) =:= 7 andalso sets:size(sets:from_list(Pairs)) =:= 7.
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%% @doc Returns true for a Honitsu hand.
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honitsu(#game{}, #player{hand=Hand}) ->
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Tiles = riichi_hand:tiles(Hand),
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Suits = sets:to_list(sets:from_list([Suit || #tile{suit=Suit} <- Tiles,
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lists:member(Suit, [pin, sou, man])])),
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IsHonour = fun(T) ->
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lists:member(T, ?HONOURS)
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end,
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length(Suits) == 1 andalso lists:any(IsHonour, Tiles).
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%% @doc Returns true for a Jun chan hand.
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jun_chan(#game{}, #player{hand=#hand{melds=Melds}}) ->
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IsTerminal = fun(T) ->
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lists:member(T, ?TERMINALS)
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end,
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HasTerminal = fun(#meld{tiles=Tiles}) ->
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lists:any(IsTerminal, Tiles)
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end,
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lists:all(HasTerminal, Melds).
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%% @doc Returns true for a Ryanpeikou hand.
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ryanpeikou(#game{}, #player{hand=#hand{melds=Melds}}) ->
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Chiis = [M || M = #meld{type=chii} <- Melds],
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Counts = [C || {_, C} <- count_unique(Chiis), C == 2],
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length(Counts) == 2.
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%% @doc Returns true for a Chinitsu hand.
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chinitsu(#game{}, #player{hand=Hand}) ->
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Tiles = riichi_hand:tiles(Hand),
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Suits = sets:to_list(sets:from_list([Suit || #tile{suit=Suit} <- Tiles,
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lists:member(Suit, [pin, sou, man])])),
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IsHonour = fun(T) ->
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lists:member(T, ?HONOURS)
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end,
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length(Suits) == 1 andalso not lists:any(IsHonour, Tiles).
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%% @doc Returns true for a 13 Orphans hand.
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%% The hand must contain one each of every terminal and honour tile, plus one
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%% additional tile matching any of the others in the hand.
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@ -44,6 +44,14 @@ iipeikou_test() ->
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#meld{type=chii, tiles=[#tile{suit=man, value=V} || V <- [6,7,8]]}]},
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?assertEqual(true, yaku:iipeikou(#game{}, #player{hand=Hand, drawn={tsumo, #tile{suit=sou, value=6}}})).
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ryanpeikou_not_iipeikou_test() ->
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Hand = #hand{melds=[#meld{type=pair, tiles=lists:duplicate(2, #tile{suit=sou, value=8})},
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#meld{type=chii, tiles=[#tile{suit=pin, value=V} || V <- [1,2,3]]},
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#meld{type=chii, tiles=[#tile{suit=sou, value=V} || V <- [4,5,6]]},
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#meld{type=chii, tiles=[#tile{suit=sou, value=V} || V <- [4,5,6]]},
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#meld{type=chii, tiles=[#tile{suit=pin, value=V} || V <- [1,2,3]]}]},
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?assertEqual(false, yaku:iipeikou(#game{}, #player{hand=Hand, drawn={tsumo, #tile{suit=sou, value=6}}})).
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chanta_test() ->
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Hand = #hand{melds=[#meld{type=pair, tiles=lists:duplicate(2, #tile{suit=dragon, value=red})},
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#meld{type=chii, tiles=[#tile{suit=pin, value=V} || V <- [1,2,3]]},
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@ -100,10 +108,58 @@ san_an_kou_test() ->
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#meld{type=chii, tiles=[#tile{suit=man, value=V} || V <- [6,7,8]]}]},
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?assertEqual(true, yaku:san_an_kou(#game{}, #player{hand=Hand, drawn={tsumo, #tile{suit=dragon, value=red}}})).
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shou_san_gen_test() ->
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Hand = #hand{melds=[#meld{type=chii, tiles=[#tile{suit=sou, value=V} || V <- [2,3,4]]},
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#meld{type=pon, tiles=lists:duplicate(3, #tile{suit=dragon, value=red})},
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#meld{type=pon, tiles=lists:duplicate(3, #tile{suit=dragon, value=green})},
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#meld{type=kan, tiles=lists:duplicate(4, #tile{suit=pin, value=1})},
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#meld{type=pair, tiles=lists:duplicate(2, #tile{suit=dragon, value=white})}]},
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?assert(yaku:shou_san_gen(#game{}, #player{hand=Hand})).
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honrouto_test() ->
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Hand = #hand{melds=[#meld{type=pon, tiles=lists:duplicate(3, #tile{suit=sou, value=1})},
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#meld{type=pon, tiles=lists:duplicate(3, #tile{suit=sou, value=9})},
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#meld{type=pon, tiles=lists:duplicate(3, #tile{suit=dragon, value=green})},
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#meld{type=kan, tiles=lists:duplicate(4, #tile{suit=pin, value=1})},
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#meld{type=pair, tiles=lists:duplicate(2, #tile{suit=dragon, value=white})}]},
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?assert(yaku:honrouto(#game{}, #player{hand=Hand})).
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chiitoitsu_test() ->
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Hand = #hand{melds=[#meld{type=pair, tiles=lists:duplicate(2, #tile{suit=pin, value=V})} || V <- lists:seq(1,7)]},
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?assertEqual(true, yaku:chiitoitsu(#game{}, #player{hand=Hand})).
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honitsu_test() ->
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Hand = #hand{melds=[#meld{type=pair, tiles=lists:duplicate(2, #tile{suit=sou, value=8})},
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#meld{type=pon, tiles=lists:duplicate(3, #tile{suit=dragon, value=red})},
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#meld{type=chii, tiles=[#tile{suit=sou, value=V} || V <- [4,5,6]]},
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#meld{type=chii, tiles=[#tile{suit=sou, value=V} || V <- [4,5,6]]},
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#meld{type=pon, tiles=lists:duplicate(3, #tile{suit=sou, value=1})}]},
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?assertEqual(true, yaku:honitsu(#game{}, #player{hand=Hand, drawn={tsumo, #tile{suit=sou, value=1}}})).
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jun_chan_test() ->
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Hand = #hand{melds=[#meld{type=pair, tiles=lists:duplicate(2, #tile{suit=sou, value=9})},
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#meld{type=chii, tiles=[#tile{suit=pin, value=V} || V <- [1,2,3]]},
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#meld{type=chii, tiles=[#tile{suit=sou, value=V} || V <- [7,8,9]]},
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#meld{type=chii, tiles=[#tile{suit=sou, value=V} || V <- [7,8,9]]},
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#meld{type=chii, tiles=[#tile{suit=pin, value=V} || V <- [1,2,3]]}]},
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?assertEqual(true, yaku:jun_chan(#game{}, #player{hand=Hand, drawn={tsumo, #tile{suit=sou, value=7}}})).
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ryanpeikou_test() ->
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Hand = #hand{melds=[#meld{type=pair, tiles=lists:duplicate(2, #tile{suit=sou, value=8})},
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#meld{type=chii, tiles=[#tile{suit=pin, value=V} || V <- [1,2,3]]},
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#meld{type=chii, tiles=[#tile{suit=sou, value=V} || V <- [4,5,6]]},
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#meld{type=chii, tiles=[#tile{suit=sou, value=V} || V <- [4,5,6]]},
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#meld{type=chii, tiles=[#tile{suit=pin, value=V} || V <- [1,2,3]]}]},
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?assertEqual(true, yaku:ryanpeikou(#game{}, #player{hand=Hand, drawn={tsumo, #tile{suit=sou, value=6}}})).
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chinitsu_test() ->
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Hand = #hand{melds=[#meld{type=pair, tiles=lists:duplicate(2, #tile{suit=sou, value=8})},
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#meld{type=pon, tiles=lists:duplicate(3, #tile{suit=sou, value=9})},
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#meld{type=chii, tiles=[#tile{suit=sou, value=V} || V <- [4,5,6]]},
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#meld{type=chii, tiles=[#tile{suit=sou, value=V} || V <- [4,5,6]]},
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#meld{type=pon, tiles=lists:duplicate(3, #tile{suit=sou, value=1})}]},
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?assertEqual(true, yaku:chinitsu(#game{}, #player{hand=Hand, drawn={tsumo, #tile{suit=sou, value=1}}})).
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kokushi_musou_test() ->
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Hand = #hand{tiles=?TERMINALS ++ ?HONOURS -- [#tile{suit=pin, value=1}],
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melds=[#meld{type=pair, tiles=lists:duplicate(2, #tile{suit=pin, value=1})}]},
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