Records and a module for handling game setup

include/riichi.hrl

@@ -1,3 +1,10 @@
+-define(SIMPLES, [#tile{suit=S, value=V} || S <- [pin, man, sou], V <- lists:seq(2,8)]).
+-define(TERMINALS, [#tile{suit=S, value=V} || S <- [pin, man, sou], V <- [1,9]]).
+-define(DRAGONS, [#tile{suit=dragon, value=V} || V <- [green, red, white]]).
+-define(WINDS, [#tile{suit=wind, value=V} || V <- [east, south, west, north]]).
+-define(HONOURS, ?DRAGONS ++ ?WINDS).
+-define(TILES, ?SIMPLES ++ ?TERMINALS ++ ?HONOURS).
+
 -type wind()   :: east | south | west | north.
 -type dragon() :: green | red | white.
 
@@ -19,3 +26,27 @@
           melds=[] :: [meld()]
 }).
 -type hand() :: #hand{}.
+
+-record(player, {
+          name     :: string(),
+          seat     :: wind(),
+          hand     :: hand(),
+          discards :: [tile()],
+          drawn    :: none | {tsumo | ron, tile()}
+}).
+-type player() :: #player{}.
+
+-type phase() :: draw | discard.
+
+-record(game, {
+          rounds=2         :: integer(),
+          timeout=infinity :: integer() | infinity,
+          round=east       :: wind(),
+          turn=east        :: wind(),
+          phase=draw       :: phase(),
+          wall             :: [tile()],
+          rinshan          :: [tile()],
+          dora             :: [tile()],
+          uradora          :: [tile()],
+          players          :: [player()]
+}).

src/riichi.erl

@@ -1,15 +1,17 @@
 -module(riichi).
 
--include("riichi.hrl").
+-include("../include/riichi.hrl").
 
 -export([
-    is_valid_tile/1,
-    dora/1,
-    nearest/2,
-    score/3,
-    score_hand/1,
-    score_hand/2,
-    score_hand/3
+         is_valid_tile/1,
+         dora/1,
+         nearest/2,
+         score/3,
+         score_hand/1,
+         score_hand/2,
+         score_hand/3,
+         shuffle/1,
+         tiles/0
 ]).
 
 is_valid_tile(#tile{suit=dragon, value=Value}) ->
@@ -130,3 +132,9 @@ find_sets(Tiles) ->
     Unique = sets:to_list(sets:from_list(Tiles)),
     [{length(lists:filter(fun(X) -> X == T end, Tiles)), T}
     || T <- Unique].
+
+shuffle(List) ->
+    [X || {_, X} <- lists:sort([{random:uniform(), I} || I <- List])].
+
+tiles() ->
+    lists:flatten([lists:duplicate(4, T) || T <- ?TILES]).

src/riichi_game.erl

@@ -0,0 +1,12 @@
+-module(riichi_game).
+
+-include("../include/riichi.hrl").
+
+-export([new/0]).
+
+new() ->
+    Tiles = riichi:shuffle(riichi:tiles()),
+    #game{rinshan=lists:sublist(Tiles, 1, 4),
+          dora=lists:sublist(Tiles, 5, 5),
+          uradora=lists:sublist(Tiles, 10,5),
+          wall=lists:sublist(Tiles, 15, 124)}.