HeadScript.OnTriggerEnter2D C# (CSharp) Method

    void OnTriggerEnter2D(Collider2D otherCollider)
    {
        // Is this a shot?
        ShotScript shot = otherCollider.gameObject.GetComponent<ShotScript>();
        if (shot != null)
        {
            if (charging) //only takes damage when charging
            {
                Destroy(shot.gameObject); // Remember to always target the game object, otherwise you will just remove the script
                damage();
            }
        }
    }