script

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class FpsShooter : MonoBehaviour
{
    public float distance = 100f;
    public KeyCode key = KeyCode.Mouse0;

    public Transform point;

    void Update ()
    {
        if (Input.GetKey(key))
        {
            RaycastHit hit;
            if (Physics.Raycast(point.position, point.forward, out hit, distance))
            {
                Debug.DrawRay(point.position, point.forward * hit.distance, Color.red);
                if (hit.transform.CompareTag("Enemy"))
                {
                    Destroy(hit.transform.gameObject);
                }
            }
        }
    }
}