How to block a LineRenderer with a shield from a moving origin point

Hello!

I'm having trouble using the LineRenderer for the first time. What I want is a sphere that orbits around the player and sends out a laser that always points at the player wherever he moves.

Right now I have this piece of code for the LineRenderer:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class DrawLine : MonoBehaviour {
 
     private LineRenderer lineRenderer;
     private float counter;
     private float dist;
 
     public Transform origin;
     public Transform destination;
 
     public float lineDrawSpeed = 6f;
 
 
     void Start () {
 
         lineRenderer = GetComponent<LineRenderer>();
         lineRenderer.SetPosition(0, origin.position);
         lineRenderer.SetWidth(.45f, .45f);
 
         dist = Vector3.Distance(origin.position, destination.position);
 
     }
     
     void Update () {

             counter += .1f / lineDrawSpeed;
 
             float x = Mathf.Lerp(0, dist, counter);
 
             Vector3 pointA = origin.position;
             Vector3 pointB = destination.position;
 
             //Get the unit vector in the desired direction, multiply by the desired lenght and add the starting point
             Vector3 pointAlongLine = x * Vector3.Normalize(pointB - pointA) + pointA;
 
             lineRenderer.SetPosition(1, pointAlongLine);
      
     }
 }
 
 

It works if I turn off the orbit of the sphere but once I activate that code again it starts to look all weird. So how do I get this to work with a moving origin and moving destination point? Another feature that I want to add is that the player can activate a shield and block the laser with it. Any ideas on how to do that?

Any help is much appreciated!