Need help with weapon recoil for an FPS using C#

I am trying to make my first game in unity, being a FPS. I have all of the controls and am working on animations, but I cannot get recoil working. My idea is that I want the camera to slowly/quickly (depending on the gun) move upwards to act as semi-realistic recoil. This is the script I am currently using for shooting the gun:

Code (csharp):

1.  
2. using UnityEngine;
3. using System.Collections;
4.  
5. public class Gun_Shooting : MonoBehaviour {
6.  
7.     float range = 100.0f;
8.     float cooldown = 0.1f;
9.     float cooldownRemaining = 0;
10.     public GameObject shrapnelPrefab;
11.     float recoil = 10.0f;
12.     float damage = 5f;
13.    
14.  
15.  
16.     // Use this for initialization
17.     void Start () {
18.    
19.     }
20.    
21.     // Update is called once per frame
22.     void Update () {
23.  
24.         cooldownRemaining -= Time.deltaTime;
25.  
26.         if( Input.GetMouseButton (0) && cooldownRemaining <= 0 ) {
27.             cooldownRemaining = cooldown;
28.             Ray ray = new Ray( Camera.main.transform.position, Camera.main.transform.forward );
29.             RaycastHit hitInfo;
30.             Camera.main.transform.Rotate( recoil * Time.deltaTime, 0, 0 ) ;
31.  
32.  
33.  
34.             if( Physics.Raycast(ray, out hitInfo, range ) ) {
35.                 Vector3 hitPoint = hitInfo.point;
36.                 Vector3 normal = hitInfo.normal;
37.                 GameObject go = hitInfo.collider.gameObject;
38.                 //Debug.Log( "Hit Object: " + go.name );
39.                 //Debug.Log( "Hit Point: " + hitPoint );
40.  
41.                 HasHealth health = go.GetComponent<HasHealth>();
42.  
43.                 if( health != null ) {
44.                     health.RecieveDamage( damage );
45.                 }
46.  
47.                 if(shrapnelPrefab != null) {
48.      
49.                     Instantiate(shrapnelPrefab, hitPoint, Quaternion.FromToRotation(Vector3.up, normal));
50.                 }
51.             }
52.         }
53.     }
54. }

As you can see under the if statement, I am using the code

Code (csharp):

1. Camera.main.transform.Rotate( recoil * Time.deltaTime, 0, 0 ) ;

to try and rotate the camera, but all this code is doing is jolting the screen slightly, not making the camera slowly travel up. I am new to both C# and unity, and so I would greatly appreciate the help.

 

Look up Rigidbody.AddTorque

 

X is left and right. Try with y-axis its up and down and also if that didnt helped try this

transform.Rotate(Vector3.up * Time.deltaTime, Space.World);

 

Bump. Still can't get it working. Any more help?

 

the code above happens in a single frame. If you want something to happen "over time" you're probably looking at a coroutine or in this case I'd probably go with an Animator with a simple rotate up and back animation and a trigger call.