void OnCollisionEnter2D(Collision2D collision)
    {
        if (collision.gameObject.tag == "Player")
        {
            if (player.RotationMode == true && mole.invincible == false)
            {
                mole.hp -= 1;

                mole.GetComponent <AudioSource>().clip = mole.SE_damage;
                mole.GetComponent <AudioSource>().Play();

                mole.GetComponent <Animator>().SetBool("takeDamage", true);

                mole.StartCoroutine("InvincibleTime");
                if (mole.hp <= 1)
                {
                    mole.throwingWait = 0.5f;
                    mole.speed_x     *= 1.5f;
                    mole.burrowsWait  = 1.0f;
                }

                if (mole.hp <= 0)
                {
                    mole.Action = Mole.ActionPart.Death;
                }
            }
        }
    }