How to move/lock camera upon checkpoint?

Hello, I'm making a game that would require an animation trigger to play before the camera is unlocked to follow the player to its right where the camera would lock again. (Similar to old, arcade fighting games)

I'm pretty new to programming and the code I have now for the CameraController was from a tutorial that continuously follows the player only along the x-axis.

 //camera controller that only follows player on x-axis 
 
 using UnityEngine;
 using System.Collections;
 
 public class CameraController : MonoBehaviour {
 
     //how far player can move away from camera before it follows
     public float xCharRange        = 1.0f;
 
     //smoothing of camera movement
     public float xTrackSmooth        = 10.0f;
 
     //boundaries our camera can move in X Axis
     public Vector2 maxXLevel;
     public Vector2 minXLevel;
 
     //hold our camera track point transform
     public Transform cameraTrackPoint;
 
 
     
     // Update is called once per frame
     void FixedUpdate () 
     {
         TrackPlayer ();
 
 
     }
 
     //getting distance out character is away from camera if we went past the set range
     //we will allow
     bool CheckXCharRange ()
     {
         return Mathf.Abs (transform.position.x - cameraTrackPoint.position.x) > (xCharRange);
     }
 
     //camera tracking main action
     void TrackPlayer ()
     {
         //variable to store the positional information of our player camera 
         float targetX = transform.position.x;
 
         //if character is out of range, then move camera to follow character until in range again
         if (CheckXCharRange ()) 
         {
             targetX = Mathf.Lerp (transform.position.x, cameraTrackPoint.position.x, xTrackSmooth * Time.deltaTime);
         }
 
         //clamp our camera's range of movement
         targetX = Mathf.Clamp (targetX, minXLevel.x, maxXLevel.x);
 
         //move our camera after all calculations are done with above...
         transform.position = new Vector3(targetX, transform.position.y, transform.position.z); 
     }
 }