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

public class LookAtMouse : MonoBehaviour {

    [Tooltip("The main camera used")]
    public Camera mainCamera;

    // keep track of the mouse position
    private Vector3 mousePosition;
    // keep track of where our mouse is in 2d space
    private Vector3 mouseTarget;

    // Use this for initialization
    void Start () {}

    // Update is called once per frame
    void Update () {
        // grab the mouse input
        mousePosition = Input.mousePosition;
        // figure out where we need to rotate towards
        mouseTarget = mainCamera.ScreenToWorldPoint(mousePosition);
        // rotate our barrel towards the mouse
        transform.rotation = Quaternion.LookRotation(Vector3.forward, mouseTarget - transform.position);
    }
}