Lasergun.cs

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

public class Lasergun : MonoBehaviour {

    public KeyCode shootKey = KeyCode.G;
    public float shootForce;
    GameObject laserShown;
    public AudioClip shootClip;
    public GameObject impactPrefab;
    public GameObject ghostHitPrefab;

    void Update () {
        if (Input.GetKeyDown (shootKey)) {
            GetComponent<AudioSource> ().PlayOneShot (shootClip);
            Ray r = new Ray (transform.position, transform.forward);
            RaycastHit hit = new RaycastHit ();
            if (Physics.Raycast (r, out hit)) {

                if (impactPrefab != null) {
                    GameObject impactGO = GameObject.Instantiate(impactPrefab, hit.point, transform.rotation);
                    //shot.GetComponent<Rigidbody>().AddForce(transform.forward * shootForce);
                }

                Lines.Make (ref laserShown, transform.position, hit.point);
                GhostMover gm = hit.collider.transform.GetComponent<GhostMover> ();
                if (gm != null) {
                    gm.transform.position += transform.forward * shootForce;
                    gm.SendMessage ("LaserHit");
                    if (ghostHitPrefab != null) {
                        GameObject impactGO = GameObject.Instantiate(ghostHitPrefab, hit.point, transform.rotation);
                        //shot.GetComponent<Rigidbody>().AddForce(transform.forward * shootForce);
                    }
                }
            } else {
                Lines.Make (ref laserShown, transform.position, transform.position + r.direction);
            }
        }
    }
}