First Person Camera

I am working on a first person controller, and I decided the hardest part would be to get the camera to follow the mouse. I was correct.

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class FirstPersonScript : MonoBehaviour {
5.  
6.     // Use this for initialization
7.     void Start () {
8.     }
9.    
10.     // Update is called once per frame
11.     void Update () {
12.         Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
13.         transform.rotation = Quaternion.Euler(ray.direction);
14.     }
15. }
16.  

This code sort of works, as the camera moves when I move the mouse, but not how I want it to. The camera rotation seemingly stays in one place.

 

Theres a first person controllor in the standard assets