private void compareHandsToDealerHand() {
boolean dealerBusted = HandUtilities.bust(this.dealerHand);
int dealerHandValue = HandUtilities.value(this.dealerHand);
for (Seat seat : this.seats) {
for (CardsAndBet hand : seat.hands) {
if (!hand.isDone()) {
int playerHandValue = HandUtilities.value(hand.cards());
if (dealerBusted || dealerHandValue < playerHandValue) {
hand.setResult(Result.PLAYER_WIN);
} else if (dealerHandValue > playerHandValue) hand.setResult(Result.DEALER_WIN);
else hand.setResult(Result.PUSH);
}
}
}
}
private void offerAndResolveInsurance() {
for (int seatIndex = 0; seatIndex < seats.size(); seatIndex++) {
Seat seat = this.seats.get(seatIndex);
if (seat.hands.size() > 0) {
seat.insuranceBet =
seat.player.insureHand(seat.hands.get(0).cards(), this.dealerHand.get(0));
for (BlackjackObserver observer : this.observers)
observer.insuranceDecision(
seatIndex, seat.hands.get(0).cards(), this.dealerHand.get(0), seat.insuranceBet);
}
}
boolean dealerBlackjack = HandUtilities.blackjack(this.dealerHand);
for (int seatIndex = 0; seatIndex < this.seats.size(); seatIndex++) {
Seat seat = this.seats.get(seatIndex);
if (seat.insuranceBet) {
double insuranceBet = seat.hands.get(0).bet() / 2;
if (dealerBlackjack) this.take -= insuranceBet * 2;
else this.take += insuranceBet;
for (BlackjackObserver observer : this.observers)
observer.insuranceResult(
seatIndex,
insuranceBet,
seat.hands.get(0).cards(),
this.dealerHand.get(0),
dealerBlackjack);
}
}
}
// returns true if at least one bet, false otherwise
public boolean playRound() {
boolean atLeastOneBet = this.takeBetsAndDealInitialCards();
if (!atLeastOneBet) return false;
if (this.dealerHand.get(0).value() == Value.ACE) offerAndResolveInsurance();
if (HandUtilities.blackjack(this.dealerHand)) {
// share dealer's hole card that is now visible)
for (BlackjackObserver observer : this.observers) observer.faceUpCard(this.dealerHand.get(1));
for (Seat seat : this.seats) {
if (seat.hands.size() > 0) {
CardsAndBet hand = seat.hands.get(0);
if (HandUtilities.blackjack(hand.cards())) hand.setResult(Result.PUSH);
else hand.setResult(Result.DEALER_WIN);
}
}
} else {
for (int seatIndex = 0; seatIndex < seats.size(); seatIndex++) this.playSeat(seatIndex);
// share dealer's hole card that is now visible)
for (BlackjackObserver observer : this.observers) observer.faceUpCard(this.dealerHand.get(1));
boolean unresolvedBet = false;
for (int seatIndex = 0; seatIndex < this.seats.size() && !unresolvedBet; seatIndex++) {
Seat seat = this.seats.get(seatIndex);
for (CardsAndBet hand : seat.hands) {
if (!hand.isDone()) unresolvedBet = true;
}
}
if (unresolvedBet) {
while (HandUtilities.value(this.dealerHand) < DEALER_MAX)
this.dealerHand.add(dealFaceUpCard());
this.compareHandsToDealerHand();
}
}
List<Card> discards = new ArrayList<>();
for (int seatIndex = 0; seatIndex < this.seats.size(); seatIndex++) {
for (CardsAndBet hand : this.seats.get(seatIndex).hands) {
for (BlackjackObserver observer : this.observers)
observer.result(
seatIndex,
hand.bet(),
new LinkedList<Card>(hand.cards()),
new LinkedList<Card>(this.dealerHand),
hand.result());
if (hand.result() != Result.SOURCE_OF_SPLIT) discards.addAll(hand.cards());
}
}
discards.addAll(this.dealerHand);
this.cardSource.discard(discards);
if (this.cardSource.justShuffled())
for (BlackjackObserver observer : observers) observer.shuffle();
this.settleBets();
for (Seat seat : this.seats) seat.hands.clear();
this.dealerHand.clear();
return true;
}
private void playSeat(int seatIndex) {
Seat seat = this.seats.get(seatIndex);
for (int i = 0; i < seat.hands.size(); i++) {
CardsAndBet hand = seat.hands.get(i);
if (i == 0 && HandUtilities.blackjack(hand.cards())) {
hand.setResult(Result.PLAYER_BLACKJACK);
} else {
List<PlayerAction> allowedActions =
new ArrayList<PlayerAction>(Arrays.asList(PlayerAction.values()));
if (hand.cards().size() == 1) // hand is result of splitting
{
if (hand.cards().get(0).value() == Value.ACE) // hand is result of splitting aces
{
allowedActions.remove(PlayerAction.HIT);
allowedActions.remove(PlayerAction.DOUBLE);
}
allowedActions.remove(PlayerAction.SURRENDER);
hand.dealCardTo(dealFaceUpCard());
}
if (i != 0 || hand.cards().size() != 2) allowedActions.remove(PlayerAction.SURRENDER);
if (hand.cards().size() != 2
|| seat.hands.size() == 7
|| // 7 hands means 4 valid hands (rest are sources of splits)
(hand.cards().get(0).value().numericValue()
!= hand.cards().get(1).value().numericValue()))
allowedActions.remove(PlayerAction.SPLIT);
// TODO: player should not be asked to make a decision if split hand is 21
// TODO: why does this only happen in the observer, not the basic player when just playing?
if (HandUtilities.value(hand.cards()) == HandUtilities.MAX_VALUE) allowedActions.clear();
while (allowedActions.size() >= 2) // player still has at least 1 decision to make
{
ArrayList<PlayerAction> allowedActionsCopy = new ArrayList<PlayerAction>(allowedActions);
PlayerAction action =
seat.player.act(hand.cards(), this.dealerHand.get(0), allowedActionsCopy);
if (!allowedActions.contains(action))
throw new IllegalActionException(
seat.player.id() + " attempted to " + action + " when not allowed.");
for (BlackjackObserver observer : this.observers)
observer.decision(
seatIndex, hand.cards(), this.dealerHand.get(0), allowedActionsCopy, action);
allowedActions.clear();
switch (action) {
case HIT:
hand.dealCardTo(dealFaceUpCard());
if (HandUtilities.value(hand.cards()) < HandUtilities.MAX_VALUE) {
allowedActions.add(PlayerAction.HIT);
allowedActions.add(PlayerAction.STAND);
}
break;
case DOUBLE:
hand.dealCardTo(dealFaceUpCard());
hand.doubleBet();
break;
case STAND:
break;
case SURRENDER:
hand.setResult(Result.SURRENDER);
break;
case SPLIT:
List<Card> cards = hand.cards();
hand.setResult(Result.SOURCE_OF_SPLIT);
seat.hands.add(i + 1, new CardsAndBet(hand.bet()));
seat.hands.get(i + 1).dealCardTo(cards.get(0));
seat.hands.add(i + 2, new CardsAndBet(hand.bet()));
seat.hands.get(i + 2).dealCardTo(cards.get(1));
break;
}
}
if (!hand.isDone() && HandUtilities.bust(hand.cards())) hand.setResult(Result.DEALER_WIN);
}
}
}