pocketmine\block\Slimeblock::onEntityCollide PHP Метод

    public function onEntityCollide(Entity $entity)
    {
        if (abs($entity->motionY) < 0.1 && !$entity->isSneaking()) {
            (double) ($d0 = 0.4 + abs($entity->motionY) * 0.2);
            $entity->motionX *= $d0;
            $entity->motionZ *= $d0;
        }
    }