public static void Register(GravitySource source)
{
Debug.Assert(
!sources.Contains(source),
"Duplicate registration of gravity source!", source
);
sources.Add(source);
}
public static void Unregister(GravitySource source)
{
Debug.Assert(
sources.Contains(source),
"Unregistration of unknown gravity source!", source
);
sources.Remove(source);
}
