public static void PlayPlayerHand(PlayerAction playerAction, CardCollection playerHand, List<CardCollection> playerHands,
CardCollection dealerHand, CardCollection gameDeck, int splitCount, ref double playerBalance, double playerBetSize)
{
if (playerAction == PlayerAction.Hit || (playerHand.Count() > 2 && playerAction == PlayerAction.DoubleOrHit))
{
Console.WriteLine("Hit");
BJUtility.TransferCard(gameDeck, playerHand);
if (playerHand.ContainsAce() && splitCount == 1 && playerHand.Count() == 2)
Console.WriteLine("Stand");
else
PlayPlayerHand(DeterminePlayerAction(playerHand, dealerHand.PeekCard(), splitCount < 3 ? true : false),
playerHand, playerHands, dealerHand, gameDeck, splitCount, ref playerBalance, playerBetSize);
}
else if (playerAction == PlayerAction.Split)
{
Console.WriteLine("Split");
if (playerHand.Count() != 2) return;
CardCollection hand1 = new CardCollection(null);
CardCollection hand2 = new CardCollection(null);
hand1.CashBalance = playerHand.CashBalance;
playerBalance -= playerBetSize;
hand2.CashBalance += playerBetSize;
BJUtility.TransferCard(playerHand, hand1);
BJUtility.TransferCard(playerHand, hand2);
playerHands.Add(hand1);
playerHands.Add(hand2);
playerHands.RemoveAt(playerHands.Count() - 3);
int newSplitCount = splitCount + 1;
PlayPlayerHand(
BJUtility.DeterminePlayerAction(playerHands[playerHands.Count() - 1], dealerHand.PeekCard(), (newSplitCount < 3 && !playerHands[0].ContainsAce()) ? true : false),
playerHands[playerHands.Count() - 1], playerHands, dealerHand, gameDeck, newSplitCount, ref playerBalance, playerBetSize);
PlayPlayerHand(
BJUtility.DeterminePlayerAction(playerHands[playerHands.Count() - 2], dealerHand.PeekCard(), (newSplitCount < 3 && !playerHands[0].ContainsAce()) ? true : false),
playerHands[playerHands.Count() - 2], playerHands, dealerHand, gameDeck, newSplitCount, ref playerBalance, playerBetSize);
}
else if (playerAction == PlayerAction.Stand || (playerHand.Count() > 2 && playerAction == PlayerAction.DoubleOrStand))
{
Console.WriteLine("Stand");
}
else if ((playerAction == PlayerAction.DoubleOrStand || playerAction == PlayerAction.DoubleOrHit) && playerHand.Count() <= 2)
{
Console.WriteLine("Double");
playerBalance -= playerBetSize;
playerHand.CashBalance += playerBetSize;
BJUtility.TransferCard(gameDeck, playerHand);
}
}
public static PlayerAction DeterminePlayerAction(CardCollection playerHand, Card dealerCard, bool canSplit)
{
// if the player has no cards, just hit
if (playerHand == null || playerHand.Count() == 0)
return PlayerAction.Hit;
// if none of the player hand values are below 21, just stand
if (playerHand.GetValues().Where(v => v < 21).Count() == 0 || playerHand.GetValues().Contains(21))
return PlayerAction.Stand;
List<int> playerValues = playerHand.GetValues();
int playerValue = playerValues[0];
int dealerValue = new CardCollection(null, new List<Card>() { dealerCard }).GetValues()[0];
// if the player hand is a pair
if (playerHand.IsPair() && canSplit)
{
// set the playerValue equal to the value of just one of their cards
playerValue = new CardCollection(null, new List<Card>() { playerHand.PeekCard() }).GetValues()[0];
// if the dealer shows an ace
if (dealerCard.IsAce())
{
if (playerValue <= 7) return PlayerAction.Hit;
if (playerValue == 8 || playerHand.ContainsAce()) return PlayerAction.Split;
return PlayerAction.Stand;
}
// if the dealer shows hard value (no ace)
if (playerValue <= 3 && dealerValue <= 7) return PlayerAction.Split;
if (playerValue <= 3 && dealerValue >= 8) return PlayerAction.Hit;
if (playerValue == 4 && (dealerValue == 5 || dealerValue == 6)) return PlayerAction.Split;
if (playerValue == 4 && (dealerValue <= 4 || dealerValue >= 7)) return PlayerAction.Hit;
if (playerValue == 5 && dealerValue <= 9) return PlayerAction.DoubleOrHit;
if (playerValue == 5 && dealerValue == 10) return PlayerAction.Hit;
if (playerValue == 6 && dealerValue <= 6) return PlayerAction.Split;
if (playerValue == 6 && dealerValue >= 7) return PlayerAction.Hit;
if (playerValue == 7 && dealerValue <= 7) return PlayerAction.Split;
if (playerValue == 7 && dealerValue >= 8) return PlayerAction.Hit;
if (playerValue == 8) return PlayerAction.Split;
if (playerValue == 9 && (dealerValue == 7 || dealerValue == 10)) return PlayerAction.Stand;
if (playerValue == 9 && (dealerValue <= 6 || dealerValue == 8 || dealerValue == 9)) return PlayerAction.Split;
if (playerValue == 10) return PlayerAction.Stand;
if (playerHand.ContainsAce()) return PlayerAction.Split;
}
// if the player has only a hard valued hand
else if (playerValues.Where(v => v < 21).Count() == 1)
{
// set the playerValue equal to the one and only available value below 21
playerValue = playerValues[0];
// if the dealer shows an ace
if (dealerCard.IsAce())
{
if ((playerValue >= 5 && playerValue <= 10) || (playerValue >= 12 && playerValue <= 16)) return PlayerAction.Hit;
if (playerValue == 11) return PlayerAction.DoubleOrHit;
if (playerValue >= 17) return PlayerAction.Stand;
}
// if the dealer shows hard value (no ace)
if (playerValue <= 8) return PlayerAction.Hit;
if (playerValue == 9 && (dealerValue == 2 || dealerValue >= 7)) return PlayerAction.Hit;
if (playerValue == 9 && (dealerValue >= 3 && dealerValue <= 6)) return PlayerAction.DoubleOrHit;
if (playerValue == 10 && dealerValue <= 9) return PlayerAction.DoubleOrHit;
if (playerValue == 10 && dealerValue == 10) return PlayerAction.Hit;
if (playerValue == 11) return PlayerAction.DoubleOrHit;
if (playerValue == 12 && (dealerValue == 2 || dealerValue == 3 || dealerValue >= 7)) return PlayerAction.Hit;
if (playerValue == 12 && (dealerValue >= 4 && dealerValue <= 6)) return PlayerAction.Stand;
if (playerValue >= 13 && playerValue <= 16 && dealerValue >= 2 && dealerValue <= 6) return PlayerAction.Stand;
if (playerValue >= 13 && playerValue <= 16 && dealerValue >= 7) return PlayerAction.Hit;
}
// if the player has a soft value available
else
{
// set the playerValue equal to the highest available value below 21
playerValue = playerValues[playerValues.Where(v => v < 21).Count() - 1];
if (dealerCard.IsAce())
{
if (playerValue <= 18) return PlayerAction.Hit;
if (playerValue >= 19) return PlayerAction.Stand;
}
if (playerValue == 11) return PlayerAction.DoubleOrHit;
if ((playerValue == 13 || playerValue == 14) && (dealerValue == 5 || dealerValue == 6)) return PlayerAction.DoubleOrHit;
if ((playerValue == 13 || playerValue == 14) && !(dealerValue == 5 || dealerValue == 6)) return PlayerAction.Hit;
if ((playerValue == 15 || playerValue == 16) && (dealerValue >= 4 && dealerValue <= 6)) return PlayerAction.DoubleOrHit;
if ((playerValue == 15 || playerValue == 16) && !(dealerValue >= 4 && dealerValue <= 6)) return PlayerAction.Hit;
if (playerValue == 17 && (dealerValue == 2 || dealerValue >= 7)) return PlayerAction.Hit;
if (playerValue == 17 && (dealerValue >= 3 && dealerValue <= 6)) return PlayerAction.DoubleOrHit;
if (playerValue == 18 && dealerValue <= 6) return PlayerAction.DoubleOrStand;
if (playerValue == 18 && (dealerValue == 7 || dealerValue == 8)) return PlayerAction.Stand;
if (playerValue == 18 && dealerValue >= 9) return PlayerAction.Hit;
if (playerValue == 19 && dealerValue == 6) return PlayerAction.DoubleOrStand;
if (playerValue == 19 && dealerValue != 6) return PlayerAction.Stand;
if (playerValue == 20) return PlayerAction.Stand;
}
return PlayerAction.Stand;
}