FindNextRail.php

<?php

    private static function getVectorFromConnection(int $connection): ?Vector3
    {
        switch ($connection) {
            case 2:
                return new Vector3(0, 0, -1);
                break;
            case 3:
                return new Vector3(0, 0, 1);
                break;
            case 4:
                return new Vector3(-1, 0, 0);
                break;
            case 5:
                return new Vector3(1, 0, 0);
                break;
        }
        return null;
    }

    protected function findNextRail(): void
    {

        $railInstanceCheck = $this->currentRail instanceof CustomBaseRail && $this->previousRail instanceof CustomBaseRail;
        if ($railInstanceCheck === false) {
            $previousRailInstanceCheck = $this->previousRail instanceof CustomBaseRail;
            if ($previousRailInstanceCheck === false) {
                $currentRailConnection = $this->currentRail->getConnectedDirections();
                $currentRailConnectionCount = count($currentRailConnection);
                if ($currentRailConnectionCount === 0) {
                    return;
                }
                foreach ($currentRailConnection as $connection) {
                    $connectionVector = self::getVectorFromConnection($connection);
                    $railVector = $this->currentRail->add($connectionVector);
                    if ($this->level === null) {
                        return;
                    }
                    $rail = $this->level->getBlock($railVector);
                    if ($rail instanceof CustomBaseRail) {
                        $this->previousRail = $rail;
                        $this->findNextRail();
                        return;
                    }
                }
            }
            return;
        }
        if ($this->nextRail instanceof CustomBaseRail && $this->nextRailDuplicatedCheck === false) {
            if ($this->motion->x === 0 && $this->motion->y === 0 && $this->motion->z === 0) {
                return;
            }
            $this->previousRail = $this->currentRail;
            $this->currentRail = $this->nextRail;
            $this->nextRailDuplicatedCheck = true;
            $this->findNextRail();
            return;
        }
        $currentRailConnection = $this->currentRail->getConnectedDirections();
        foreach ($currentRailConnection as $connection) {
            $connectionVector = self::getVectorFromConnection($connection);
            $railVector = $this->currentRail->add($connectionVector);
            $previousConnectionCheck = $this->previousRail->equals($railVector);
            if ($previousConnectionCheck === true) {
                continue;
            }
            if ($this->level === null) {
                return;
            }
            $rail = $this->level->getBlock($railVector);
            if ($rail instanceof CustomBaseRail) {
                $this->nextRail = $rail;
                $this->nextRailDuplicatedCheck = false;
                return;
            }
        }
        return;
    }