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<?php declare(strict_types=1); |
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namespace Stratadox\CardGame\Match; |
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use function array_filter; |
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use function array_reduce; |
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use function array_search; |
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use Closure; |
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use function assert; |
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use function count; |
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use Stratadox\ImmutableCollection\ImmutableCollection; |
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final class Cards extends ImmutableCollection |
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{ |
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public function __construct(Card ...$cards) |
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{ |
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parent::__construct(...$cards); |
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} |
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public function current(): Card |
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{ |
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return parent::current(); |
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} |
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public function inHand(): Cards |
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{ |
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return $this->filterBy(static function (Card $card): bool { |
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return $card->isInHand(); |
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}); |
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} |
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public function inPlay(): Cards |
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{ |
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return $this->filterBy(static function (Card $card): bool { |
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return $card->isInPlay(); |
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}); |
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} |
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public function thatAttack(): Cards |
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{ |
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return $this->filterBy(static function (Card $card): bool { |
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return $card->isAttacking(); |
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}); |
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} |
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public function thatDefend(): Cards |
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{ |
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return $this->filterBy(static function (Card $card): bool { |
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return $card->isDefending(); |
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}); |
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} |
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public function drawFromTopOfDeck(MatchId $match, int $player): void |
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{ |
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$this->draw($this->topMostCardInDeck(), $match, $player); |
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} |
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public function theOneThatAttacksTheAmbushOf(Card $defender): Card |
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{ |
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return $this->filterBy(static function (Card $card) use ($defender): bool { |
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return $card->isAttackingThe($defender); |
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})[0]; |
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} |
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private function topMostCardInDeck(): Card |
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{ |
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$card = array_reduce( |
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array_filter($this->items(), static function (Card $card): bool { |
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return $card->isInDeck(); |
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}), |
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static function (?Card $topmost, Card $card): ?Card { |
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if ($topmost === null || $card->hasHigherPositionThan($topmost)) { |
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return $card; |
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} |
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return $topmost; |
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} |
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); |
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assert($card !== null); |
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return $card; |
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} |
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private function draw(Card $card, MatchId $match, int $player): void |
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{ |
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$card->draw( |
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$match, |
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count($this->inHand()), |
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$player |
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); |
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} |
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private function filterBy(Closure $function): Cards |
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{ |
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return new self(...array_filter($this->items(), $function)); |
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} |
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} |
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Stratadox /
CardGame
