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<?php declare(strict_types=1); |
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namespace Stratadox\PuzzleSolver; |
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use function assert; |
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use const PHP_EOL; |
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/** |
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* Universal Solver |
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* |
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* Utility to easily describe puzzles and produce a corresponding puzzle solver. |
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* |
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* @author Stratadox |
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*/ |
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final class UniversalSolver implements SolverBuilder |
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{ |
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/** @var SolverFactory */ |
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private $create; |
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/** @var Find|null */ |
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private $goal; |
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/** @var bool */ |
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private $weightedMoves = false; |
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/** @var bool */ |
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private $exhausting = false; |
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/** @var Heuristic|null */ |
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private $heuristic; |
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/** @var string|null */ |
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private $loggingFile; |
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/** @var string|null */ |
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private $logSeparator; |
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/** @var int */ |
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private $iterationInterval = 0; |
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public function __construct(SolverFactory $solverFactory, ?Find $goal) |
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{ |
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$this->create = $solverFactory; |
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$this->goal = $goal; |
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} |
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public static function forAPuzzle(): SolverBuilder |
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{ |
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return new self(new PuzzleSolverFactory(), null); |
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} |
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public static function aimingTo(Find $goal): SolverBuilder |
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{ |
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return new self(new PuzzleSolverFactory(), $goal); |
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} |
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public function withGoalTo(Find $goal): SolverBuilder |
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{ |
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$new = clone $this; |
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$new->goal = $goal; |
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return $new; |
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} |
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public function withWeightedMoves(): SolverBuilder |
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{ |
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$new = clone $this; |
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$new->weightedMoves = true; |
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return $new; |
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} |
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public function whereMovesEventuallyRunOut(): SolverBuilder |
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{ |
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$new = clone $this; |
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$new->exhausting = true; |
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return $new; |
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} |
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public function withHeuristic(Heuristic $heuristic): SolverBuilder |
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{ |
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$new = clone $this; |
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$new->heuristic = $heuristic; |
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return $new; |
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} |
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public function withLogging(string $file, string $separator, int $timeout = 0): SolverBuilder |
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{ |
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$new = clone $this; |
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$new->loggingFile = $file; |
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$new->logSeparator = $separator; |
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$new->iterationInterval = $timeout; |
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return $new; |
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} |
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public function select(): PuzzleSolver |
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{ |
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assert($this->goal); |
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return $this->create->forAPuzzleWith( |
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new PuzzleDescription( |
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$this->goal, |
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$this->weightedMoves, |
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$this->exhausting, |
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$this->heuristic |
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), |
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new SearchSettings( |
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$this->loggingFile, |
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$this->logSeparator ?: PHP_EOL, |
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$this->iterationInterval |
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) |
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); |
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} |
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} |
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Stratadox /
PuzzleSolver
