Verlet Elastic Collision

Hey all, I'm working on a game and over the last few days I've taken a script from here about making rope bridges using verlet integration. So far I've added a 2D edge collider to the object and it all works fine, currently it just creates an object at the Collison point and gets the index of said point. What I'm aiming to do is have an object (eg. My square player) move along it like a ground and I want the shape of the rope to alter accordingly. I was thinking of having an elasticity variable and getting the mass and gravity force from the players rigidbody but I can't think of how to do this. My script is below:

 public Transform StartPoint;
     public Transform EndPoint;
 
     public bool useCollider = true;
 
     private LineRenderer lineRenderer;
     private List<RopeSegment> ropeSegments = new List<RopeSegment>();
     public float ropeSegLen = 0.25f;
     public int segmentCount = 35;
     public float lineWidth = 0.1f;
 
     //Sling Shot
     bool moveToMouse = false;
     Vector3 mousePositionWorld;
     int indexMousePos;
     //Gameobject following
     //public GameObject followObject;
 
     public EdgeCollider2D edgeCollider;
 
 
     // Use this for initialization
     void Start()
     {
         this.lineRenderer = this.GetComponent<LineRenderer>();
         Vector3 ropeStartPoint = StartPoint.position;
 
         for (int i = 0; i < segmentCount; i++)
         {
             this.ropeSegments.Add(new RopeSegment(ropeStartPoint));
             ropeStartPoint.y -= ropeSegLen;
         }
 
         if (useCollider && edgeCollider != null)
         {
             edgeCollider.enabled = true;
             edgeCollider.edgeRadius = lineWidth / 2;
         }
         else
             edgeCollider.enabled = false;
     }
 
     // Update is called once per frame
     void Update()
     {
         this.DrawRope();
 
         if (Input.GetMouseButtonDown(0))
         {
             this.moveToMouse = true;
         }
         else if (Input.GetMouseButtonUp(0))
         {
             this.moveToMouse = false;
         }
 
         Vector3 screenMousePos = Input.mousePosition;
         float xStart = StartPoint.position.x;
         float xEnd = EndPoint.position.x;
         this.mousePositionWorld = Camera.main.ScreenToWorldPoint(new Vector3(screenMousePos.x, screenMousePos.y, 10));
         float currX = this.mousePositionWorld.x; //followObject.transform.position.x
 
         float ratio = (currX - xStart) / (xEnd - xStart);
         if (ratio > 0)
         {
             this.indexMousePos = (int)(this.segmentCount * ratio);
         }
     }
 
     private void FixedUpdate()
     {
         this.Simulate();
     }
 
     private void OnCollisionEnter2D(Collision2D other)
     {
         int closestIndex = 805;
         float closestDist = float.MaxValue;
 
         for (int i = 0; i < edgeCollider.points.Length; i++)
         {
             Vector2 edgePoint = edgeCollider.points[i];
 
             float thisDist = Vector2.Distance(edgePoint, other.GetContact(0).point);
 
             if (thisDist < closestDist)
             {
                 closestDist = thisDist;
                 closestIndex = i;
             }
         }
 
         #region TESTING //!REMOVE LATER
         print(closestIndex);
         GameObject go = new GameObject();
         go.transform.position = edgeCollider.points[closestIndex];
         go.name = "Collision w/ Point " + closestIndex;
         #endregion
     }
 
     private void Simulate()
     {
         // SIMULATION
         Vector2 forceGravity = new Vector2(0f, -1f);
 
         for (int i = 1; i < this.segmentCount; i++)
         {
             RopeSegment firstSegment = this.ropeSegments[i];
             Vector2 velocity = firstSegment.posNow - firstSegment.posOld;
             firstSegment.posOld = firstSegment.posNow;
             firstSegment.posNow += velocity;
             firstSegment.posNow += forceGravity * Time.fixedDeltaTime;
             this.ropeSegments[i] = firstSegment;
         }
 
         //CONSTRAINTS
         for (int i = 0; i < 50; i++)
         {
             this.ApplyConstraint();
         }
     }
 
     private void ApplyConstraint()
     {
         //Constrant to First Point 
         RopeSegment firstSegment = this.ropeSegments[0];
         firstSegment.posNow = this.StartPoint.position;
         this.ropeSegments[0] = firstSegment;
 
         //Constrant to Second Point 
         RopeSegment endSegment = this.ropeSegments[this.ropeSegments.Count - 1];
         endSegment.posNow = this.EndPoint.position;
         this.ropeSegments[this.ropeSegments.Count - 1] = endSegment;
 
         for (int i = 0; i < this.segmentCount - 1; i++)
         {
             RopeSegment firstSeg = this.ropeSegments[i];
             RopeSegment secondSeg = this.ropeSegments[i + 1];
 
             float dist = (firstSeg.posNow - secondSeg.posNow).magnitude;
             float error = Mathf.Abs(dist - this.ropeSegLen);
             Vector2 changeDir = Vector2.zero;
 
             if (dist > ropeSegLen)
             {
                 changeDir = (firstSeg.posNow - secondSeg.posNow).normalized;
             }
             else if (dist < ropeSegLen)
             {
                 changeDir = (secondSeg.posNow - firstSeg.posNow).normalized;
             }
 
             Vector2 changeAmount = changeDir * error;
             if (i != 0)
             {
                 firstSeg.posNow -= changeAmount * 0.5f;
                 this.ropeSegments[i] = firstSeg;
                 secondSeg.posNow += changeAmount * 0.5f;
                 this.ropeSegments[i + 1] = secondSeg;
             }
             else
             {
                 secondSeg.posNow += changeAmount;
                 this.ropeSegments[i + 1] = secondSeg;
             }
             //*
             Vector2[] colliderPoints = new Vector2[this.segmentCount];
             colliderPoints[i] = this.ropeSegments[i].posNow;
 
             if (this.moveToMouse && indexMousePos > 0 && indexMousePos < this.segmentCount - 1 && i == indexMousePos)
             {
                 RopeSegment thisSegment = this.ropeSegments[i];
                 RopeSegment nextSegment = this.ropeSegments[i + 1];
                 thisSegment.posNow = new Vector2(this.mousePositionWorld.x, this.mousePositionWorld.y);
                 nextSegment.posNow = new Vector2(this.mousePositionWorld.x, this.mousePositionWorld.y);
                 // thisSegment.posNow = new Vector2 (this.followObject.transform.position.x, this.followObject.transform.position.y);
                 // nextSegment.posNow = new Vector2 (this.followObject.transform.position.x, this.followObject.transform.position.y);
                 this.ropeSegments[i] = thisSegment;
                 this.ropeSegments[i + 1] = nextSegment;
             }
 
             if (edgeCollider.points.Length == 0)
                 print("**NULL**");
             else
                 edgeCollider.points[i] = colliderPoints[i];
         }
     }
 
     private void DrawRope()
     {
         float lineWidth = this.lineWidth;
         lineRenderer.startWidth = lineWidth;
         lineRenderer.endWidth = lineWidth;
 
         Vector3[] ropePositions = new Vector3[this.segmentCount];
 
         for (int i = 0; i < this.segmentCount; i++)
         {
             ropePositions[i] = this.ropeSegments[i].posNow;
         }
 
         lineRenderer.positionCount = ropePositions.Length;
         lineRenderer.SetPositions(ropePositions);
 
         if (useCollider)
             CreateColliders();
     }
 
     private void CreateColliders()
     {
         Vector2[] colliderPoints = new Vector2[this.segmentCount];
 
         for (int i = 0; i < this.segmentCount; i++)
         {
             colliderPoints[i] = this.ropeSegments[i].posNow;
         }
 
         edgeCollider.points = colliderPoints;
     }
 
     public struct RopeSegment
     {
         public Vector2 posNow;
         public Vector2 posOld;
 
         public RopeSegment(Vector2 pos)
         {
             this.posNow = pos;
             this.posOld = pos;
         }
     }

My posts barely get read but if anyone sees this and helps I would be so appreciative, thanks in advance!