public static (List <FuDetail>, int) CalculateFu(IList <TileKinds> hand,
TileId winTile,
TileKinds winGroup,
HandConfig config,
IList <int> valuedTiles = null,
IList <Meld> melds = null)
{
var winTileKind = winTile.ToTileKind();
if (valuedTiles is null)
{
valuedTiles = new List <int>();
}
if (melds is null)
{
melds = new List <Meld>();
}
var fuDetails = new List <FuDetail>();
if (hand.Count == 7)
{
fuDetails = new List <FuDetail>
{
new FuDetail(25, BASE)
};
return(fuDetails, 25);
}
var pair = hand.Where(x => x.IsPair)
.ToList()[0];
var ponSets = hand.Where(x => x.IsPon);
var copiedOpenedMelds = melds.Where(x => x.Type == MeldType.CHI)
.Select(x => x.TileKinds)
.ToList();
var closedChiSets = new List <TileKinds>();
foreach (var x in hand)
{
if (!copiedOpenedMelds.Contains(x))
{
closedChiSets.Add(x);
}
else
{
copiedOpenedMelds.Remove(x);
}
}
var IsOpenHand = melds.Any(x => x.Opened);
if (closedChiSets.Contains(winGroup))
{
var tileIndex = winTileKind.Simplify;
//ペンチャン
if (winGroup.ContainsTerminal())
{
//ペン12
if (tileIndex == 2 && winGroup.IndexOf(winTileKind) == 2)
{
fuDetails.Add(new FuDetail(2, PENCHAN));
}
//ペン89
else if (tileIndex == 6 && winGroup.IndexOf(winTileKind) == 0)
{
fuDetails.Add(new FuDetail(2, PENCHAN));
}
}
//カン57
if (winGroup.IndexOf(winTileKind) == 1)
{
fuDetails.Add(new FuDetail(2, KANCHAN));
}
}
//符あり雀頭
var countOfValuedPairs = valuedTiles.Count(x => x == pair[0].Value);
if (countOfValuedPairs == 1)
{
fuDetails.Add(new FuDetail(2, VALUED_PAIR));
}
//雀頭ダブ東南4符
if (countOfValuedPairs == 2)
{
fuDetails.Add(new FuDetail(2, VALUED_PAIR));
fuDetails.Add(new FuDetail(2, VALUED_PAIR));
}
//シャンポン待ち
if (winGroup.IsPair)
{
fuDetails.Add(new FuDetail(2, PAIR_WAIT));
}
foreach (var setItem in ponSets)
{
var openMelds = melds.Where(x => setItem.Equals(x.TileKinds))
.ToList();
var openMeld = openMelds.Count == 0 ? null : openMelds[0];
var setWasOpen = !(openMeld is null) && openMeld.Opened;
var isKan = !(openMeld is null) &&
(openMeld.Type == MeldType.KAN || openMeld.Type == MeldType.CHANKAN);
var isYaochu = YAOCHU_INDICES.Contains(setItem[0].Value);
if (!config.IsTsumo && setItem.Equals(winGroup))
{
setWasOpen = true;
}
if (isYaochu)
{
if (isKan)
{
if (setWasOpen)
{
fuDetails.Add(new FuDetail(16, OPEN_TERMINAL_KAN));
}
else
{
fuDetails.Add(new FuDetail(32, CLOSED_TERMINAL_KAN));
}
}
else
{
if (setWasOpen)
{
fuDetails.Add(new FuDetail(4, OPEN_TERMINAL_PON));
}
else
{
fuDetails.Add(new FuDetail(8, CLOSED_TERMINAL_PON));
}
}
}
else
{
if (isKan)
{
if (setWasOpen)
{
fuDetails.Add(new FuDetail(8, OPEN_KAN));
}
else
{
fuDetails.Add(new FuDetail(16, CLOSED_KAN));
}
}
else
{
if (setWasOpen)
{
fuDetails.Add(new FuDetail(2, OPEN_PON));
}
else
{
fuDetails.Add(new FuDetail(4, CLOSED_PON));
}
}
}
}
var addTsumoFu = fuDetails.Count > 0 || config.Options.FuForPinfuTsumo;
if (config.IsTsumo && addTsumoFu)
{
fuDetails.Add(new FuDetail(2, TSUMO));
}
if (IsOpenHand && fuDetails.Count == 0 && config.Options.FuForOpenPinfu)
{
fuDetails.Add(new FuDetail(2, HAND_WITHOUT_FU));
}
if (IsOpenHand || config.IsTsumo)
{
fuDetails.Add(new FuDetail(20, BASE));
}
else
{
fuDetails.Add(new FuDetail(30, BASE));
}
return(fuDetails, RoundFu(fuDetails));
}
