private void GetActiveBodiesOfType(BodyType type, ICollection <int> moving)
{
var bodyList = bodyLists[(int)type - 1];
var i = 0;
while (i < bodyList.Count)
{
ref var body = ref bodies.WithId(bodyList[i]);
// Store bodies out of this nodes bound for reinsertion and skip all duplicates.
if (body.IsActive() && !moving.Contains(bodyList[i]))
{
moving.Add(bodyList[i]);
}
i++;
}