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Correl Roush 2012-10-15 21:58:51 -04:00
parent bcff986757
commit dadd16b81d
1 changed files with 47 additions and 0 deletions
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47
src/yaku.erl
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@ -256,3 +256,50 @@ ryuu_iisou(#game{}, #player{hand=Hand}) ->
dai_san_gen(#game{}, #player{hand=#hand{melds=Melds}}) ->
[green, red, white] =:= lists:usort([V || #meld{type=T, tiles=[#tile{suit=dragon, value=V}|_]} <- Melds,
lists:member(T, [pon, kan])]).
suu_an_kou(#game{}, #player{hand=#hand{melds=Melds}}) ->
Pons = [M || M = #meld{type=T} <- Melds,
lists:member(T, [pon, kan]),
not riichi:is_open(M)],
length(Pons) == 4.
tsu_iisou(#game{}, #player{hand=Hand}) ->
IsHonour = fun(T) ->
lists:member(T, ?HONOURS)
end,
lists:all(IsHonour, riichi_hand:tiles(Hand)).
chinrouto(#game{}, #player{hand=Hand}) ->
IsTerminal = fun(T) ->
lists:member(T, ?TERMINALS)
end,
lists:all(IsTerminal, riichi_hand:tiles(Hand)).
shou_suushi(#game{}, #player{hand=#hand{melds=Melds}}) ->
Pons = [M || M = #meld{type=Type, tiles=[#tile{suit=wind}|_]} <- Melds,
lists:member(Type, [pon, kan])],
Pairs = [M || M = #meld{type=Type, tiles=[#tile{suit=wind}|_]} <- Melds,
Type == pair],
length(Pons) == 2 andalso length(Pairs) == 1.
dai_suushi(#game{}, #player{hand=#hand{melds=Melds}}) ->
Pons = [M || M = #meld{type=Type, tiles=[#tile{suit=wind}|_]} <- Melds,
lists:member(Type, [pon, kan])],
length(Pons) == 3.
chuuren_pooto(#game{} = Game, #player{hand=#hand{melds=Melds} = Hand} = Player) ->
Tiles = riichi_hand:tiles(Hand),
[#tile{suit=Suit}|_] = Tiles,
chinitsu(Game, Player)
andalso length([M || M = #meld{type=T, tiles=[#tile{value=1}|_]} <- Melds,
lists:member(T, [pon, kan])]) == 1
andalso length([M || M = #meld{type=T, tiles=[#tile{value=9}|_]} <- Melds,
lists:member(T, [pon, kan])]) == 1
andalso lists:all(fun(T) ->
lists:member(T, Tiles)
end,
[#tile{value=Value, suit=Suit} || Value <- lists:seq(2,8)]).
suu_kan_tsu(#game{}, #player{hand=#hand{melds=Melds}}) ->
Kans = [M || M = #meld{type=kan} <- Melds],
length(Kans) == 4.