pocketmine\block\Rail::canConnect PHP Метод

    public function canConnect(Rail $block)
    {
        if ($this->distanceSquared($block) > 2) {
            return false;
        }
        /** @var Vector3 [] $blocks */
        if (count($blocks = self::check($this)) == 2) {
            return false;
        }
        return $blocks;
    }