// this is how to play, with this type of behavior
public override void Hit(Dealer dealer, BettingBehavior betting)
{
if (IsBlackJack || IsBust)
{
return;
}
if (betting.DetermineSplit(dealer.DealerHand, this, dealer.Statistics))
{
HandleSplit(dealer, betting);
// at this point, the two bets were set, and the cards have been
// dealt. The dealer knows about the hands
return;
}
// set the default bet
Bet = betting.Bet;
// modify the bet based on the last few cards (~12)
{
float[] tensFactor =
{
0.7176587594f,
0.7482172244f,
1.008457417f,
0.8508591232f,
0.8222382664f,
0.8221459353f,
0.8482251933f,
0.9152756165f,
1.034960453f,
1.161035422f,
1.577427822f,
2.4375f,
2.0f
};
if (dealer.Statistics.TensIndex > 7)
{
int newbet = Bet;
newbet *= 1000;
Bet = newbet;
}
}
// Intentionally not adding Insurance, because it's not material
// determine if the bet should be modified
if (betting.DetermineDoubleDown(dealer.DealerHand, this, dealer.Statistics))
{
IsDoubledDown = true;
// okay to double the bet
Bet = betting.Bet * 2;
// deal one card only
// let the logic set the IsBust property as needed
Card cardDealt = dealer.DealCard(this);
dealer.Statistics.DiscardCard(cardDealt);
}
else
{
// we'll keep hitting till the sum is at least 16
while ((SumCards < 16 && (dealer.Statistics.TensIndex > 1)) ||
// increase the threshold to 18 if player has an ace showing
(HasAce && _cards.Count < 3 && SumCards < 18) ||
// always hit if we're at 11 or below
SumCards < 12)
{
// let the logic set the IsBust property as needed
Card cardDealt = dealer.DealCard(this);
dealer.Statistics.DiscardCard(cardDealt);
if (IsBust)
{
break;
}
}
}
}
// this method will play a series of hands, using a specific behavior
public override void PlayHands(int iterations, StatisticsMgr stats)
{
Dealer dlr = new Dealer(stats);
BettingBehavior betting = new BettingBehavior();
// this is done like this to avoid re-allocating hands
ModifiedBettingHand bettingHand = new ModifiedBettingHand();
// doing this here to avoid allocations
Hand[] playerHands = new Hand[2];
while (--iterations >= 0)
{
betting.DetermineBet(stats);
bettingHand.Reset();
dlr.DealHands(bettingHand);
// tweak the stats before the doubledown bet
foreach (Card playerCard in dlr.PlayerHand.Cards)
{
// this records the card displayed, emulating a user that is
// counting the last 12 cards or so. Counting more cards would
// result in better performance.
stats.DiscardCard(playerCard);
}
stats.DiscardCard(dlr.DealerHand.Cards[1]);
stats.BlackJacks += (dlr.PlayerHand.IsBlackJack) ? 1 : 0;
// apply the hit logic to the player's hand. This will also
// split if necessary
dlr.PlayerHand.Hit(dlr, betting);
// dealer only hits if the player doesn't go bust
if (!dlr.PlayerHand.IsBust ||
(dlr.PlayerSplitHand != null && !dlr.PlayerSplitHand.IsBust))
{
dlr.DealerHand.Hit(dlr);
}
if (iterations % 1000000 == 0)
{
Debug.WriteLine("\tProfits: {0} Bet: {1}", stats.Profit, betting.Bet);
}
playerHands[0] = dlr.PlayerHand;
if (null != dlr.PlayerSplitHand)
{
// if the hand was split, add the split hand results as well
playerHands[1] = dlr.PlayerSplitHand;
}
else
{
playerHands[1] = null;
}
foreach (var playerHand in playerHands)
{
if (null == playerHand)
{
continue;
}
// keep track of the total amount bet since it's dynamic
stats.CumulativeBet += playerHand.Bet;
if (playerHand.IsBust)
{
stats.Profit -= playerHand.Bet;
stats.RecordLoss();
stats.LossesByBust++;
if (playerHand.IsDoubledDown)
{
stats.LossesByDoubleDown++;
}
if (playerHand.IsSplit)
{
stats.LossesBySplit++;
}
}
else if (playerHand.IsBlackJack && !dlr.DealerHand.IsBlackJack)
{
// blackjack pays 3 to 2
stats.Profit += (int)(1.5 * playerHand.Bet);
stats.RecordWin(iterations);
if (playerHand.IsSplit)
{
stats.WinsBySplit++;
}
}
else if (!playerHand.IsBlackJack && dlr.DealerHand.IsBlackJack)
{
stats.Profit -= playerHand.Bet;
stats.RecordLoss();
if (playerHand.IsDoubledDown)
{
stats.LossesByDoubleDown++;
}
if (playerHand.IsSplit)
{
stats.LossesBySplit++;
}
}
else if (dlr.DealerHand.IsBust)
{
stats.Profit += playerHand.Bet;
stats.RecordWin(iterations);
stats.WinsByBust++;
if (playerHand.IsDoubledDown)
{
stats.WinsByDoubleDown++;
}
if (playerHand.IsSplit)
{
stats.WinsBySplit++;
}
}
else if (playerHand.SumCards > dlr.DealerHand.SumCards)
{
stats.Profit += playerHand.Bet;
stats.RecordWin(iterations);
if (playerHand.IsDoubledDown)
{
stats.WinsByDoubleDown++;
}
if (playerHand.IsSplit)
{
stats.WinsBySplit++;
}
}
else if (dlr.DealerHand.SumCards > playerHand.SumCards)
{
stats.Profit -= playerHand.Bet;
stats.RecordLoss();
if (playerHand.IsDoubledDown)
{
stats.LossesByDoubleDown++;
}
if (playerHand.IsSplit)
{
stats.LossesBySplit++;
}
}
}
// now keep track of the last few discarded cards from both players
int index = 0;
foreach (Card dlrCard in dlr.DealerHand.Cards)
{
// skip the card that was initially shown because it was counted
// earlier
if (index++ == 1)
{
continue;
}
stats.DiscardCard(dlrCard);
}
}
}
public virtual Hand HandleSplit(Dealer dealer, BettingBehavior betting)
{
// create an additional hand, using one of the cards from this hand
Hand secondHand = new Hand();
secondHand.IsSplit = true;
dealer.PlayerSplitHand = secondHand;
Card secondHandFirstCard = PrepareForSplit();
secondHand.AddCardShowing(secondHandFirstCard);
// let the logic set the IsBust property as needed
Card cardDealt = dealer.DealCard(this);
dealer.Statistics.DiscardCard(cardDealt);
// replace the second card for the primary hand
cardDealt = dealer.DealCard(secondHand);
dealer.Statistics.DiscardCard(cardDealt);
// split on split is not allowed
secondHand.IsSplittable = false;
// set the default bet
Bet = betting.Bet;
secondHand.Bet = betting.Bet;
// now apply the hit logic
// determine if the bet should be modified
if (betting.DetermineDoubleDown(dealer.DealerHand, this, dealer.Statistics))
{
IsDoubledDown = true;
// okay to double the bet
Bet = betting.Bet * 2;
// deal one card only
// let the logic set the IsBust property as needed
cardDealt = dealer.DealCard(this);
dealer.Statistics.DiscardCard(cardDealt);
}
else
{
// we'll keep hitting till the sum is at least X
while ((SumCards < 16 &&
(dealer.Statistics.TensIndex > 4)) ||
(SumCards < 12))
{
// break from the loop if the proportion of >= 10 cards is too low
if (SumCards > 11 && dealer.Statistics.TensIndex < 2)
{
break;
}
// don't try if we have a run of small cards
if (_cards.Count > 4 && SumCards > 11)
{
break;
}
// let the logic set the IsBust property as needed
cardDealt = dealer.DealCard(this);
dealer.Statistics.DiscardCard(cardDealt);
if (IsBust)
{
break;
}
}
}
// determine if the bet should be modified for the second hand
if (betting.DetermineDoubleDown(dealer.DealerHand, this, dealer.Statistics))
{
secondHand.IsDoubledDown = true;
// okay to double the bet
secondHand.Bet = betting.Bet * 2;
// deal one card only
// let the logic set the IsBust property as needed
cardDealt = dealer.DealCard(secondHand);
dealer.Statistics.DiscardCard(cardDealt);
}
else
{
// we'll keep hitting till the sum is at least X
while ((secondHand.SumCards < 15 && dealer.DealerHand.CardShowing.Face > 6) ||
(secondHand.SumCards < 12))
{
// break from the loop if the proportion of >= 10 cards is too low
if (secondHand.SumCards > 11 && dealer.Statistics.TensIndex < 3)
{
break;
}
// don't try if we have a run of small cards
if (secondHand.Cards.Count > 4 && secondHand.SumCards > 11)
{
break;
}
// let the logic set the IsBust property as needed
cardDealt = dealer.DealCard(secondHand);
dealer.Statistics.DiscardCard(cardDealt);
if (secondHand.IsBust)
{
break;
}
}
}
return(secondHand);
}
