public void IgnoreCollisionWith(Body other) { for (int i = 0; i < FixtureList.Count; i++) { Fixture f = FixtureList[i]; for (int j = 0; j < other.FixtureList.Count; j++) { Fixture f2 = other.FixtureList[j]; f.IgnoreCollisionWith(f2); } } }