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<?php |
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namespace App\GameProj; |
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use App\Card\DeckProj; |
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use App\Card\Card; |
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class BlackjackHandHelperProj |
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{ |
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/** |
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* Calculate the total value of a hand. |
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* |
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* @param Card[] $hand The hand to calculate |
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* @return int The value of the hand |
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*/ |
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public function getHandValue(array $hand): int |
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{ |
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$value = 0; |
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$aceCount = 0; |
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foreach ($hand as $card) { |
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$cardValue = $card->getBlackjackValue(); |
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if ($cardValue === 11) { |
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$aceCount++; |
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} |
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$value += $cardValue; |
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} |
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while ($value > 21 && $aceCount > 0) { |
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$value -= 10; |
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$aceCount--; |
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} |
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return $value; |
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} |
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/** |
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* Get the probability of busting for a specific hand. |
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* |
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* @param array $hand The hand to check |
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* @param DeckProj $deck The deck to calculate probabilities from |
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* @return float The probability of busting |
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*/ |
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public function getBustProbability(array $hand, DeckProj $deck): float |
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{ |
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$handValue = $this->getHandValue($hand); |
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$hasAce = $this->handHasAce($hand); |
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$lowHandValue = $this->getLowHandValue($hand); |
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if ($hasAce && $handValue != $lowHandValue) { |
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$handValue = $lowHandValue; |
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} |
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$safeValue = 21 - $handValue; |
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if ($safeValue <= 0) { |
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return 1.0; |
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} |
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if ($hasAce && $handValue <= 11) { |
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return 0.0; |
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} |
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$totalCards = $deck->remainingCardsCount(); |
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$safeCards = 0; |
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foreach ($deck->getCards() as $card) { |
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$cardValue = $card->getBlackjackValue(); |
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$isAce = $card->getValue() === 'Ace'; |
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if ($cardValue <= $safeValue || $isAce) { |
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$safeCards++; |
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} |
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} |
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return 1 - ($safeCards / $totalCards); |
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} |
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/** |
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* Check if a hand has blackjack. |
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* |
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* @param array $hand The hand to check |
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* @return bool True if the hand has blackjack |
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*/ |
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public function hasBlackjack(array $hand): bool |
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{ |
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return count($hand) == 2 && $this->getHandValue($hand) == 21; |
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} |
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/** |
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* Check if a hand contains an Ace. |
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* |
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* @param Card[] $hand The hand to check |
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* @return bool True if the hand contains an Ace |
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*/ |
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private function handHasAce(array $hand): bool |
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{ |
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foreach ($hand as $card) { |
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if ($card->getValue() === 'Ace') { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* Calculate the low value of a hand (counting Aces as 1). |
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* |
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* @param Card[] $hand The hand to calculate |
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* @return int The low value of the hand |
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*/ |
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private function getLowHandValue(array $hand): int |
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{ |
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$lowValue = 0; |
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foreach ($hand as $card) { |
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if ($card->getValue() === 'Ace') { |
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$lowValue += 1; |
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continue; |
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} |
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$lowValue += $card->getBlackjackValue(); |
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} |
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return $lowValue; |
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} |
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/** |
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* Determine if the computer should hit based on its strategy. |
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* |
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* @param string $computerStrategy The strategy used by the computer player |
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* @param int $handValue The current value of the hand |
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* @param array $hand The current hand |
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* @return bool True if the computer should hit |
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*/ |
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public function shouldComputerHit(string $computerStrategy, int $handValue, array $hand): bool |
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{ |
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if ($computerStrategy === 'smart' && $handValue < 18) { |
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return $this->handHasAce($hand); |
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} |
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return $handValue < 17; |
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} |
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/** |
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* Settle all bets. |
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* |
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* @param array $hands All player hands |
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* @param array $dealerHand The dealer hand |
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* @return float The total adjustment to the player bank |
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*/ |
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public function settleBets(array $hands, array $dealerHand): float |
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{ |
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$dealerBlackjack = $this->hasBlackjack($dealerHand); |
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$dealerValue = $this->getHandValue($dealerHand); |
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$bankAdjustment = 0; |
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foreach ($hands as $hand) { |
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$bankAdjustment += $this->settleSingleHandBet($hand, $dealerBlackjack, $dealerValue); |
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} |
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return $bankAdjustment; |
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} |
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/** |
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* Settle the bet for a single hand. |
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* |
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* @param array $hand The hand to settle |
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* @param bool $dealerBlackjack Whether the dealer has blackjack |
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* @param int $dealerValue The value of the dealer hand |
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* @return float The adjustment to the player bank for this hand |
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*/ |
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private function settleSingleHandBet(array $hand, bool $dealerBlackjack, int $dealerValue): float |
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{ |
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$handValue = $this->getHandValue($hand['hand']); |
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$playerBlackjack = $hand['status'] === 'blackjack'; |
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1 |
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if ($playerBlackjack) { |
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if ($dealerBlackjack) { |
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return $hand['bet']; |
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} |
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return $hand['bet'] * 2.5; |
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} |
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if ($handValue == $dealerValue) { |
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return $hand['bet']; |
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} |
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if ($handValue <= 21 && ($handValue > $dealerValue || $dealerValue > 21)) { |
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return $hand['bet'] * 2; |
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} |
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return 0; |
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} |
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} |
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Pbris /
mvc1
