/// <summary>
/// 牌を組み立てます。
/// </summary>
/// <returns>牌</returns>
/// <param name="kind">種類</param>
/// <param name="number">数</param>
/// <param name="isRed">赤ドラかどうか</param>
public static uint BuildTile(Kind kind, int number = 0, bool isRed = false)
{
Debug.Assert((kind.GetGroup() == Group.Honours && number == 0) ||
(kind.GetGroup() == Group.Suits && Numbers.Contains(number) ||
(kind.GetGroup() == Group.Empty && number == 0)),
$"数が不正です。{number}");
return((uint)kind | ((uint)number << Tile.NumberShift) | ((isRed ? 1u : 0u) << Tile.RedFiveShift));
}