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<?php |
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declare(strict_types=1); |
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namespace Arp\DominoGame\Value; |
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use Arp\DominoGame\Exception\DominoGameException; |
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/** |
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* @author Alex Patterson <[email protected]> |
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* @package Arp\DominoGame\Value |
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*/ |
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class DominoCollection extends AbstractCollection |
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{ |
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/** |
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* @param Domino $domino |
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* |
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* @return bool |
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*/ |
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public function has(Domino $domino): bool |
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{ |
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return in_array($domino, $this->elements, true); |
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} |
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/** |
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* Add a new domino to the collection. |
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* |
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* @param Domino $domino |
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*/ |
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public function add(Domino $domino): void |
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{ |
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if (!$this->has($domino)) { |
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$this->elements[] = $domino; |
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} |
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} |
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/** |
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* Randomly shuffle the collection elements |
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* |
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* @return bool |
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*/ |
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public function shuffle(): bool |
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{ |
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return shuffle($this->elements); |
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} |
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/** |
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* Add a domino to the start of the collection. |
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* |
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* @param Domino $domino |
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*/ |
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public function addToStart(Domino $domino): void |
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{ |
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array_unshift($this->elements, $domino); |
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} |
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/** |
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* Add a domino to the end of the collection. |
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* |
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* @param Domino $domino |
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*/ |
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public function addToEnd(Domino $domino): void |
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{ |
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$this->elements[] = $domino; |
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} |
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/** |
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* Return the summed value of all the tiles in the player's hand |
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* |
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* @return int |
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*/ |
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public function getValue(): int |
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{ |
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$value = 0; |
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/** @var Domino $domino */ |
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foreach ($this->elements as $domino) { |
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$value += $domino->getValue(); |
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} |
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return $value; |
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} |
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/** |
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* Return a single domino with the highest value (if there are matching values the order is undefined) |
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* |
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* @return Domino|null |
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*/ |
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public function getDominoWithHighestValue(): ?Domino |
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{ |
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$sortedCollection = $this->createCollectionSortedByHighestTileValue(); |
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if ($sortedCollection->isEmpty()) { |
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return null; |
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} |
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/** @var Domino|null $domino */ |
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$domino = $sortedCollection->first(); |
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return $domino; |
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} |
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/** |
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* Create a new DominoCollection instance with the $elements sorted by the highest tile (sum) values. |
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* |
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* @return DominoCollection |
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*/ |
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public function createCollectionSortedByHighestTileValue(): DominoCollection |
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{ |
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$elements = $this->elements; |
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uasort( |
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$elements, |
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static function (Domino $dominoA, Domino $dominoB) { |
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return $dominoA->getValue() <=> $dominoB->getValue(); |
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} |
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); |
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return new static($elements); |
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} |
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/** |
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* Create a new collection containing any dominoes that have tile values matching the provided $value. |
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* |
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* @param int $value The value that should be matched. |
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* |
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* @return DominoCollection |
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*/ |
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public function createCollectionWithMatchingTiles(int $value): DominoCollection |
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{ |
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$matches = []; |
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/** @var Domino $domino */ |
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foreach ($this->elements as $domino) { |
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if ($value === $domino->getTopTile() || $value === $domino->getBottomTile()) { |
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$matches[] = $domino; |
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} |
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} |
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return new static($matches); |
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} |
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/** |
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* Pick a random domino from the collection. |
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* |
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* @return Domino |
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* |
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* @throws DominoGameException If the random pick is impossible or removal from the collection fails |
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*/ |
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public function pickRandom(): Domino |
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{ |
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if ($this->isEmpty()) { |
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throw new DominoGameException('Unable to pick a domino from an empty collection'); |
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} |
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try { |
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$values = array_values($this->elements); |
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$domino = $values[random_int(0, count($values) - 1)]; |
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} catch (\Throwable $e) { |
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throw new DominoGameException( |
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sprintf('Failed to pick a random domino from the collection: %s', $e->getMessage()), |
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$e->getCode(), |
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$e |
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); |
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} |
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if (!$this->removeElement($domino)) { |
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throw new DominoGameException('Failed to remove the picked domino from the collection'); |
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} |
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return $domino; |
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} |
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/** |
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* Return the collection represented as a string. |
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* |
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* @return string |
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*/ |
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public function __toString() |
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{ |
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$string = ''; |
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foreach ($this->elements as $element) { |
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$string .= $element . ' '; |
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} |
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return trim($string); |
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} |
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} |
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alex-patterson-webdev /
domino-game
