pocketmine\entity\Human::getTotalXpRequirement PHP 메소드

    public static function getTotalXpRequirement(int $level) : int
    {
        if ($level <= 16) {
            return $level ** 2 + 6 * $level;
        } elseif ($level <= 31) {
            return 2.5 * $level ** 2 - 40.5 * $level + 360;
        } elseif ($level <= 21863) {
            return 4.5 * $level ** 2 - 162.5 * $level + 2220;
        }
        return PHP_INT_MAX;
        //prevent float returns for invalid levels on 32-bit systems
    }