public Planet GetPlanet(ushort thingIndex)
{
for (int i = 0; i < planets.Count; i++)
{
if (planets[i].ThingIndex == thingIndex)
{
return(planets[i]);
}
}
if (things[thingIndex].type != (ushort)ThingType.Sun &&
things[thingIndex].type != (ushort)ThingType.Planet &&
things[thingIndex].type != (ushort)ThingType.Moon)
{
return(null);
}
Planet planet = universeFactory.GetPlanet(Planet.GetPlanetHeightWithRadius(things[thingIndex].radius));
planet.InitPlanet(this, thingIndex);
planets.Add(planet);
return(planet);
}