pocketmine\event\entity\EntityDamageEvent::createThornsDamage PHP Method

    public function createThornsDamage()
    {
        if ($this->thornsLevel !== []) {
            $this->thornsArmor = array_rand($this->thornsLevel);
            $thornsL = $this->thornsLevel[$this->thornsArmor];
            if (mt_rand(1, 100) < $thornsL * 15) {
                $this->thornsDamage = mt_rand(1, 4);
            }
        }
    }