GP7_GAMEN4_AR_Shooting_Unity/Assets/myFolder/Scripts/Shooter.cs

using UnityEngine;

public class Shooter : MonoBehaviour
{
    public AudioSource hitEnemy;
    public GameManager gameManager;
    void Update()
    {
        
        if
            (
            (Input.touchCount > 0 && Input.GetTouch(0).phase == TouchPhase.Began)
            ||
            (Input.GetMouseButtonDown(0))
            )
            FireRaycast();
    }

    void FireRaycast()// Shoot line from the center of screen
    {

        Ray ray = Camera.main.ViewportPointToRay(new Vector3(0.5f, 0.5f, 0));
        RaycastHit hit;

        if (Physics.Raycast(ray, out hit))
        {
            // Has hit an Enemy?
            if (hit.transform.tag == "Enemy" && gameManager.gameRunning)
            {
                hitEnemy.Play();
                Destroy(hit.transform.gameObject);
                GameManager.gameManager.AddPoints();
            }
        }
    }
}