Camera confusion

I've been attempting to program a 3rd person camera that rotates around a central object. I've done this by attaching the camera to the object and rotating the object itself based on mouse movement. I have a separate script for X rotation and Y rotation, and both scripts are pretty much identical. However, the X rotation of the camera can rotate 360 degrees with no problem, but the Y rotation comes to a shaky halt when pointing 90 degrees up or down. Why does the Y rotation have a limit, and how can I get rid of it?

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class LookY : MonoBehaviour
5. {
6.     [SerializeField]
7.     float _sensitivity=5.0f;
8.     float _mouseY = 0.0f;
9.    
10.     void Update()
11.     {
12.         _mouseY = Input.GetAxis("Mouse Y");
13.  
14.         Vector3 rot = transform.localEulerAngles;
15.  
16.         rot.x -= _mouseY*_sensitivity;
17.         transform.localEulerAngles = rot;
18.     }
19. }

 

One approach is to rotate the camera independent of the object.

It is often useful to interpolate from one camera orientation to another.

This is typically done using quaternions - this helps avoid gimbal lock.


Research quaternion camera for more info.

 

Alright, I'll look that up. Thanks!