void UpdateLine(Line line, int index)
{
lineMan.currentLineBeingDrawn = currentLine;
Vector3[] listArr = new Vector3[line.lineRenderer.positionCount];
line.lineRenderer.GetPositions(listArr);
// Add position to the line renderer
List <Vector3> listPos = new List <Vector3>(listArr);
if (!listPos.Contains(transform.position))
{
lineMan.AddPointToLine(transform.position);
}
// Update line's couplers
line.AddCoupler(GetComponent <LineCoupler>(), index);
}