private Moon(Planet planet, string name, double mass, double radius, Vector3 position, Vector3 velocity) : base(name, mass, radius, position, velocity)
{
planet.AddMoon(this);
Body = planet;
}
public static Moon Create(string name, Planet planet, double mass, double radius, double distance)
{
return(new Moon(planet, name, mass, radius, new Vector3(planet.Position.X + distance, 0, 0),
new Vector3(0, 0, 0)));
}
internal void AddPlanet(Planet planet)
{
Planets.Add(planet);
}