public void Remove(Chain chain)
{
if (chain_list.Contains(chain))
chain_list.Remove(chain);
}
public void Add(Chain chain)
{
if (!chain_list.Contains(chain))
chain_list.Add(chain);
}
public void RenderChain(Chain chain)
{
List<PointMass> points = chain.pointmass_list;
Color color = Color.Green;
for (int i = 0; i < points.Count-1; i++)
{
linebatch.Add(new LineVertex(new Vector3(points[i].position.X, points[i].position.Y, 0), color));
linebatch.Add(new LineVertex(new Vector3(points[i + 1].position.X, points[i + 1].position.Y, 0), color));
}
}