for testing and deploying your application
for finding and fixing issues
for empowering human code reviews
<?php declare(strict_types=1);
namespace Stratadox\Pathfinder\Estimate;
use Stratadox\Pathfinder\Environment;
use Stratadox\Pathfinder\Heuristic;
final class Safely implements Heuristic
{
private $heuristic;
private $environment;
private function __construct(
Heuristic $heuristic,
Environment $environment
) {
$this->heuristic = $heuristic;
$this->environment = $environment;
}
public static function apply(Heuristic $heuristic): self
return new self($heuristic, $heuristic->environment());
public function estimate(string $start, string $goal): float
if ($this->environment->areNeighbours($start, $goal)) {
return $this->environment->movementCostBetween($start, $goal);
return $this->heuristic->estimate($start, $goal);
public function environment(): Environment
return $this->environment;
Stratadox /
Pathfinder
