public Star(LehmerPRNG lehmer)
{
this.lehmer = lehmer;
this.Name = GenerateName();
var type = lehmer.NextChoice(starTypes, starTypes.Select(st => st.Prevalence));
this.TypeOfStar = type.Type;
this.Radius = lehmer.NextDouble(type.MinRadius, type.MaxRadius);
var hasPlanets = lehmer.NextBool(CHANCE_OF_PLANETS);
if (!hasPlanets)
{
return;
}
Planets = new List <Planet>();
var numPlanets = lehmer.NextInt(1, 10);
var currentDisanceInAU = lehmer.NextDouble(0.5, 4);
for (int i = 0; i < numPlanets; i++)
{
Planets.Add(new Planet(lehmer, currentDisanceInAU));
currentDisanceInAU += lehmer.NextDouble(0.5, 1.5) * (i + 1) * 0.5;
}
}
public Planet(LehmerPRNG lehmer, double distanceFromStar)
{
this.lehmer = lehmer;
DistanceFromStar = distanceFromStar;
HasRings = lehmer.NextBool(RING_CHANCE);
var candidates = planetTypes.Where(pt => pt.MaxDistance >= distanceFromStar && pt.MinDistance <= distanceFromStar);
var planetType = lehmer.NextChoice(candidates);
Type = planetType.Type;
Radius = lehmer.NextDouble(planetType.MinRadius, planetType.MaxRadius);
var hasMoons = lehmer.NextBool(MOON_CHANCE);
if (!hasMoons)
{
return;
}
Moons = new List <Moon>();
var numMoons = lehmer.NextInt(1, 4);
var currentDisanceInPU = lehmer.NextDouble(0.5, 4);
for (int i = 0; i < numMoons; i++)
{
Moons.Add(new Moon(lehmer, currentDisanceInPU, Radius));
currentDisanceInPU += lehmer.NextDouble(0.5, 1.5) * (i + 1) * 0.5;
}
}
public Zone(UPoint at)
{
this.at = at;
// The seed is generated by combining the lowest 2 bytes of x and y into 1 unit.
// This means that the universe will repeat every 65536 x and y b
lehmer = new LehmerPRNG((at.X & 0xFFFF) << 16 | (at.Y & 0xFFFF));
var isStar = lehmer.NextBool(CHANCE_OF_STAR);
if (!isStar)
{
return;
}
this.Star = new Star(lehmer);
}
public Moon(LehmerPRNG lehmer, double distanceFromPlanet, double planetRadius)
{
this.lehmer = lehmer;
DistanceFromPlanet = distanceFromPlanet;
Radius = lehmer.NextDouble(planetRadius / 8, planetRadius / 4);
}