void drawLine(node node1, node node2)
{
GameObject road1 = Instantiate(line1);
myLine1 = road1.GetComponent <line>();
LineRenderer lineRenderer = myLine1.GetComponent <LineRenderer>();
lineRenderer.material = new Material(Shader.Find("Particles/Additive"));
lineRenderer.SetColors(Color.green, Color.green);
myLine1.DrawLine(new Vector3(node1.xPos, node1.yPos, 0), new Vector3(node2.xPos, node2.yPos));
}