private double GetActionEV(Shoe tmp_shoe, CardSet active_hand, ActionType action, Card dealer_upcard)
{
Hand hand = new Hand(active_hand);
SHand shand;
int soft_total = hand.SoftTotal();
if (soft_total <= 21 && hand.HasAce())
{
shand.Total = soft_total;
shand.Soft = true;
}
else
{
shand.Total = hand.HardTotal();
shand.Soft = false;
}
int[] shoe_counts = tmp_shoe.ToArray();
int upcard = dealer_upcard.PointValue;
switch (action)
{
case ActionType.Stand:
return(Eval.StandEv(shand, upcard, shoe_counts));
case ActionType.Hit:
return(Eval.HitEv(shand, upcard, shoe_counts));
case ActionType.Double:
return(Eval.DoubleEv(shand, upcard, current_bet, shoe_counts));
case ActionType.Split:
return(Eval.SplitEv(active_hand[0].PointValue, upcard, current_bet, max_splits - split_count, shoe_counts));
case ActionType.Surrender:
return(Eval.SurrenderEv());
}
return(-1);
}
private double GetActionEV(Shoe tmp_shoe, CardSet active_hand, ActionType action, Card dealer_upcard)
{
Hand hand = new Hand(active_hand);
SHand shand;
int soft_total = hand.SoftTotal();
if (soft_total <= 21 && hand.HasAce())
{
shand.Total = soft_total;
shand.Soft = true;
}
else
{
shand.Total = hand.HardTotal();
shand.Soft = false;
}
int[] shoe_counts = tmp_shoe.ToArray();
int upcard = dealer_upcard.PointValue;
switch (action)
{
case ActionType.Stand:
return Eval.StandEv(shand, upcard, shoe_counts);
case ActionType.Hit:
return Eval.HitEv(shand, upcard, shoe_counts);
case ActionType.Double:
return Eval.DoubleEv(shand, upcard, current_bet, shoe_counts);
case ActionType.Split:
return Eval.SplitEv(active_hand[0].PointValue, upcard, current_bet, max_splits - split_count, shoe_counts);
case ActionType.Surrender:
return Eval.SurrenderEv();
}
return -1;
}
public void DealRound()
{
player_handset.ActiveHand.AddCard(shoe.ExtractTop());
dealer_hand.AddCard(shoe.ExtractTop());
player_handset.ActiveHand.AddCard(shoe.ExtractTop());
dealer_hand.AddCard(shoe.ExtractTop());
bool dealer_natural;
dealer_natural = dealer_hand.IsNatural();
// check if player has blackjack
if (player_handset.ActiveHand.IsNatural())
{
if (dealer_natural)
{
// push, return initial bet
player_money += bet;
EndRound();
return;
}
else
{
// player wins with blackjack, pay out 1.5:1 (with 10$ at stake, return 15$)
player_money += (int)(1.5 * bet) + bet;
EndRound();
return;
}
}
int insurance = 0;
// offer insurance
if (Upcard().IsAce())
{
if (agent.TakeInsurance(this))
{
insurance = (int)(0.5 * bet);
player_money -= insurance;
AddPartyPoints(insurance);
}
}
// dealer has blackjack
if (dealer_natural)
{
if (insurance > 0)
{
//??????
// insurance bet pays 2:1, initial bet is lost
player_money += (2 * insurance) + insurance;
EndRound();
return;
}
else
{
// dealer wins with blackjack
EndRound();
return;
}
}
// main loop
// keeps asking player for actions for unfinished hands until
// no unfinished hands remains
while (!player_handset.AllFinished())
{
ActionType action = agent.GetBestAction(this);
if (!IsValidAction(action))
{
Console.WriteLine("Player made invalid action!");
return;
}
// player decides to stand, hand is over, move to next one
if (ActionType.Stand == action)
{
player_handset.ActiveHand.Stand();
}
else if (ActionType.Hit == action)
{
player_handset.ActiveHand.Hit(shoe.ExtractTop());
}
else if (ActionType.Surrender == action)
{
player_handset.ActiveHand.Surrender();
}
else if (ActionType.Double == action)
{
player_handset.ActiveHand.Double(shoe.ExtractTop());
player_money -= bet;
AddPartyPoints(bet);
}
else if (ActionType.Split == action)
{
player_handset.Split(shoe.ExtractTop(), shoe.ExtractTop());
player_money -= bet;
AddPartyPoints(bet);
split_count++;
}
else
{
Console.WriteLine("Unknown action");
}
player_handset.NextActiveHand();
}
// each hand should be here in either some of these states:
// busted, standed, doubled, surrendered
// if all hands are busted, dealer doesn't draw, only reveals his hand and the round is over
if (player_handset.AllBusted())
{
EndRound();
return;
}
// player surrendered
if (player_handset.ActiveHand.Surrendered)
{
// return half of the initial bet
player_money += (int)(0.5 * bet);
EndRound();
return;
}
// handle the dealer logic
while (true)
{
// must hit on soft 17's
if (dealer_hand.HasAce() && dealer_hand.SoftTotal() == 17)
{
dealer_hand.AddCard(shoe.ExtractTop());
continue;
}
// finish condition
if (dealer_hand.PointCount() >= 17)
{
break;
}
dealer_hand.AddCard(shoe.ExtractTop());
}
// payouts
foreach (Hand hand in player_handset)
{
// skip split hands
if (hand.IsSplit())
{
continue;
}
int hand_bet = (hand.Doubled) ? (bet * 2) : bet;
if (dealer_hand.IsBust())
{
/*
* // both busted, it's a push
* if (hand.IsBust())
* player_money += hand_bet;
* else // not busted hand wins dealer's busted hand 2:1 payout
* player_money += 2 * hand_bet;
*/
if (!hand.IsBust())
{
player_money += 2 * hand_bet;
}
}
else
{
// do nothing, we lose our bet
if (hand.IsBust())
{
}
else
{
int player_total = hand.PointCount();
int dealer_total = dealer_hand.PointCount();
if (player_total < dealer_total)
{
// do nothing, we lose our bet
} // we win, 2:1 payout
else if (dealer_total < player_total)
{
player_money += 2 * hand_bet;
} // push
else
{
player_money += hand_bet;
}
}
}
}
// round is over
EndRound();
}
public SHand(Hand hand)
{
int soft_total = hand.SoftTotal();
if (soft_total <= 21 && hand.HasAce())
{
this.Total = soft_total;
this.Soft = true;
}
else
{
this.Total = hand.HardTotal();
this.Soft = false;
}
}