void OnTriggerEnter2D(Collider2D coll)
    {
        if (coll.gameObject.tag == "altin")
        {
            int miktar = coll.GetComponent<altinn>().miktar;
            toplam_altin += miktar;
            Destroy(coll.GameObject);
            altin_texti.text = toplam_altin.ToString();
        }
    }