void Shoot()
    {
        muzzleFLash.Play();
        ak47.Play();

        currentAmmo--;
        ammoTest.ammo = currentAmmo;
        Vector3    point = new Vector3(playerCam.pixelWidth / 2, playerCam.pixelHeight / 2, 0);
        Ray        ray   = playerCam.ScreenPointToRay(point);
        RaycastHit hit;

        if (Physics.Raycast(ray, out hit))
        {
            GameObject hitObject = hit.transform.gameObject;

            EnemyShot target = hitObject.GetComponent <EnemyShot>();
            if (target != null)
            {
                target.GotShot(damage);
                GameObject enemyBlood = Instantiate(enemyHitEffect, hit.point, Quaternion.LookRotation(hit.normal));
                Destroy(enemyBlood, 2f);
            }
            else
            {
                GameObject impact = Instantiate(impactEffect, hit.point, Quaternion.LookRotation(hit.normal));
                Destroy(impact, 2f);
            }
        }
    }