internal static bool IsFlushDraw(IEnumerable <Card> playerCards, IEnumerable <Card> boardCards, int amountOfPlayersCardsInDraw, bool isBackdoor = false)
{
if (playerCards == null || boardCards == null || playerCards.Count() != 2 || boardCards.Count() < 3)
{
return(false);
}
var allCards = HandAnalyzerHelpers.CombineCardLists(playerCards, boardCards);
var suitGroups = allCards.GroupBy(x => x.CardSuit);
var drawGroup = suitGroups.FirstOrDefault(x => x.Count() == (isBackdoor ? 3 : 4));
if (drawGroup == null || suitGroups.Any(x => x.Count() > drawGroup.Count()) || playerCards.Count(x => drawGroup.Any(d => d.CardSuit == x.CardSuit)) != amountOfPlayersCardsInDraw)
{
return(false);
}
return(true);
}
/// <summary>
/// Determines if it's possible to create straight using specified card
/// </summary>
/// <param name="playerCard"></param>
/// <param name="boardCards"></param>
/// <returns></returns>
internal static bool IsOneCardStraight(Card playerCard, IEnumerable <Card> boardCards)
{
if (boardCards == null || boardCards.Count() < 4)
{
return(false);
}
var sortedBoardRanks = boardCards.Select(x => x.Rank).Distinct().ToList();
sortedBoardRanks.Sort();
if (sortedBoardRanks.Contains((int)Card.GetCardRank("A")))
{
sortedBoardRanks.Insert(0, 1);
}
if (sortedBoardRanks.Count < 4)
{
return(false);
}
for (int i = 0; i <= sortedBoardRanks.Count - 4; i++)
{
var curCards = sortedBoardRanks.Skip(i);
if (curCards.Count() >= 4)
{
var list = new List <int>(curCards.Take(4));
list.Add(playerCard.Rank);
if (HandAnalyzerHelpers.IsStraight(list) && !boardCards.Any(x => x.Rank == playerCard.Rank))
{
return(true);
}
}
}
return(false);
}
