private int GetGeneNumber(BlackJackScore score, BlackJackScore dealerShowing)
{
// Four is the lowest non-soft hand
// If hand is soft, add 8 (number of non-soft hands, minus offset)
int p = score.Score - 4 + (score.IsSoft ? 8 : 0);
return((p * 10) + dealerShowing.Score - 2);
}
public Plays GetPlay(IEnumerable <Card> hand, Card dealerShowing, Plays possiblePlays)
{
BlackJackScore score = new BlackJackScore(hand);
BlackJackScore dealerScore = new BlackJackScore(dealerShowing);
int index = GetGeneNumber(score, dealerScore);
Plays willingPlays = (Plays)((byte)possiblePlays & Genes[index] & USABLE_GENES_MASK);
if (willingPlays.HasFlag(Plays.Hit))
{
return(Plays.Hit);
}
return(Plays.Stand);
}
public string PlayHand()
{
StringBuilder sb = new StringBuilder();
// Clear the table
_dealerHand.Clear();
foreach (var seat in Seats)
{
seat.Clear();
}
// Reshuffle if necessary
if (_deck.UndealtCount * 4 < _deck.Count)
{
sb.AppendFormat("Deck down to {0} cards, reshuffling\n", _deck.UndealtCount);
_deck.GatherAndShuffle();
}
// Place bets
foreach (var seat in Seats.Where(s => !s.IsEmpty))
{
if (seat.Player.Chips >= Bet)
{
seat.Bet = Bet;
seat.Player.Chips -= Bet;
}
}
var ActiveSeats = Seats.Where(s => s.Bet > 0);
// Deal two cards
for (int c = 0; c < 2; c++)
{
foreach (var seat in ActiveSeats)
{
seat.Hand.Add(_deck.Deal());
}
_dealerHand.Add(_deck.Deal());
}
BlackJackScore dealerScore = new BlackJackScore(_dealerHand);
// Players play
if (!dealerScore.IsBlackjack)
{
foreach (var seat in ActiveSeats)
{
BlackJackScore score = new BlackJackScore(seat.Hand);
if (score.IsBlackjack)
{
continue;
}
// TODO: split and surrender
Plays possiblePlays = Plays.Stand | Plays.Hit | Plays.Double | Plays.Surrender;
Plays play = Plays.Stand;
do
{
play = seat.Player.GetPlay(seat.Hand, _dealerHand[1], possiblePlays);
switch (play)
{
case Plays.Stand:
break;
case Plays.Double:
break;
case Plays.Hit:
seat.Hand.Add(_deck.Deal());
break;
case Plays.Split:
break;
case Plays.Surrender:
throw new NotImplementedException();
default:
break;
}
possiblePlays &= ~Plays.Double;
score = new BlackJackScore(seat.Hand);
} while (score.Score < 21 && play.HasFlag(Plays.Hit));
}
}
// Dealer plays
while (dealerScore.Score < DEALER_STANDS_ON)
{
_dealerHand.Add(_deck.Deal());
dealerScore = new BlackJackScore(_dealerHand);
}
// Score hands
foreach (var seat in ActiveSeats)
{
var hand = seat.Hand;
var playerScore = new BlackJackScore(hand);
int effectiveDealerScore = (dealerScore.Score > 21) ? 0 : dealerScore.Score;
int winnings = 0;
if (playerScore.Score < 22)
{
// TODO: may have to modify if dealer has blackjack
if (playerScore.IsBlackjack)
{
// BLACKJACK
winnings = seat.Bet + (int)(BlackjackPays * seat.Bet);
}
else
{
if (playerScore.Score == effectiveDealerScore)
{
// PUSH
winnings = seat.Bet;
}
else if (playerScore.Score > effectiveDealerScore)
{
// WIN
winnings = seat.Bet + (int)(Payoff * seat.Bet);
}
}
}
seat.Player.Chips += winnings;
sb.AppendFormat("Player {0} at table {1}: {2} ({3}) bet:{4} win:{5} chips:{6}\n", seat.Player.Name, this.Name, BlackJackHandToString(hand), new BlackJackScore(hand), seat.Bet, (winnings - seat.Bet), seat.Player.Chips);
}
sb.AppendFormat("Dealer: {0} ({1})", BlackJackHandToString(_dealerHand), dealerScore);
return(sb.ToString());
}