/// <summary>
/// Generates moon datas for a planet of the given size, gravity, name and distance from the world center.
/// The moon has to have a size smaller than the planet
/// </summary>
/// <param name="planetSize">Size of the parent planet</param>
/// <param name="surfaceGravity">Surface gravity of the parent planet</param>
/// <param name="planetName">Name of the planet, used for naming the moon</param>
/// <param name="distance">Distance</param>
/// <returns>An array of all generated moons</returns>
private MyPlanetMoonItem[] GenerateMoons(float planetSize, float surfaceGravity, string planetName, long distance)
{
if (MyRandom.Instance.NextFloat() > m_settings.PlanetSettings.MoonProbability)
{
return(new MyPlanetMoonItem[0]);
}
int maxMoons = GetMaxMoonCount(surfaceGravity);
int numMoons = MyRandom.Instance.Next(maxMoons > 0 ? 1 : 0, maxMoons + 1);
MyPlanetMoonItem[] moons = new MyPlanetMoonItem[numMoons];
for (int i = 0; i < numMoons; i++)
{
var dist = planetSize * (i + 1) + planetSize * MyRandom.Instance.GetRandomFloat(0.5f, 1.5f);
var def = GetPlanetMoonDefinition(planetSize * 0.8f);
bool isGasGiant = GasGiants.Contains(def);
if (dist + distance > m_settings.WorldSize && m_settings.WorldSize > 0)
{
return(moons);
}
string name = SettingsSession.Static.Settings.GeneratorSettings.PlanetSettings.MoonNameFormat
.SetProperty("ObjectNumber", i + 1)
.SetProperty("ObjectNumberGreek", greek_letters[i % greek_letters.Length])
.SetProperty("ObjectNumberRoman", ConvertNumberToRoman(i + 1))
.SetProperty("ObjectLetterLower", (char)('a' + (i % 26)))
.SetProperty("ObjectLetterUpper", (char)('A' + (i % 26)))
.SetProperty("ObjectId", def.Id.SubtypeId.String)
.SetProperty("MoonPlanetName", planetName);
MyPlanetMoonItem item = new MyPlanetMoonItem();
item.Type = SystemObjectType.MOON;
item.DefName = def.Id.SubtypeName.ToString();
item.Distance = dist;
item.Size = SizeByGravity(def.SurfaceGravity, isGasGiant);
item.DisplayName = name;
moons[i] = item;
}
return(moons);
}
/// <summary>
/// Generates a planets data and possible moons or an asteroid ring for the planet
/// </summary>
/// <param name="index">Index of the planet in the system</param>
/// <param name="distance">Distance from the world center</param>
/// <param name="totalObjects">Total number of objects in the system</param>
/// <param name="planetIndex">Index of the planet of the planets (n-th planet)</param>
private void GeneratePlanet(int index, long distance, int totalObjects, ref int planetIndex)
{
MyPlanetItem planet = new MyPlanetItem();
double mod = distance == 0 && m_settings.FirstPlanetCenter ? 1 : Math.Sin(index * Math.PI / totalObjects);
var def = GetPlanetDefinition((int)(m_settings.PlanetSettings.PlanetSizeCap * mod));
bool isGasGiant = GasGiants.Contains(def);
var size = SizeByGravity(def.SurfaceGravity, isGasGiant);
var angle = MyRandom.Instance.GetRandomFloat(0, (float)(2 * Math.PI));
var height = MyRandom.Instance.GetRandomFloat((float)Math.PI / 180 * -5, (float)Math.PI / 180 * 5);
Vector3D pos = new Vector3D(distance * Math.Sin(angle), distance * Math.Cos(angle), distance * Math.Sin(height));
string name = SettingsSession.Static.Settings.GeneratorSettings.PlanetSettings.PlanetNameFormat
.SetProperty("ObjectNumber", planetIndex + 1)
.SetProperty("ObjectNumberGreek", greek_letters[planetIndex % greek_letters.Length])
.SetProperty("ObjectNumberRoman", ConvertNumberToRoman(planetIndex + 1))
.SetProperty("ObjectLetterLower", (char)('a' + (planetIndex % 26)))
.SetProperty("ObjectLetterUpper", (char)('A' + (planetIndex % 26)))
.SetProperty("ObjectId", def.Id.SubtypeId.String);
++planetIndex;
planet.DisplayName = name;
planet.Type = SystemObjectType.PLANET;
planet.DefName = def.Id.SubtypeId.String;
planet.Size = size;
planet.PlanetRing = GenerateRing(def.SurfaceGravity, planet.Size);
planet.OffsetPosition = pos;
planet.CenterPosition = pos;
planet.PlanetMoons = GenerateMoons(planet.Size, def.SurfaceGravity, planet.DisplayName, distance);
planet.Generated = false;
Objects.Add(planet);
}