public void initStar(double _densityMul = 1.0, double rel_mass = 1.0, List <double> percentage = null)
{
ChemicalComposition chemicalComposition = new ChemicalComposition(this.stellarCompositionMats, percentage);
this.starComposition = chemicalComposition;
elementsDistribution = percentage;
NumberFormatInfo nfi = new NumberFormatInfo();
Random_Extension randomSeed = new Random_Extension();
nfi.NumberDecimalSeparator = ".";
Function hydrostaticEquilibrium = ParametriUtente.Science.hydrostaticEquilibrium;
int randomGenForBlackHoles;
//mass in grammi / 18.015 = moles
//ideal gas law
double molecularWeight = 0.0;
double sumofElement = 0.0;
double pressione;
this.meanDensity = 0;
randomGenForBlackHoles = randomSeed.Next(0, 1);
foreach (ChemicalElement element in starComposition.get_elements())
{
double currentElement = starComposition.get_percentage_per_element(element);
sumofElement = sumofElement + currentElement;
molecularWeight = (molecularWeight + (element.mass)
);
}
molecularWeight = molecularWeight / sumofElement;
this.Volume = ((Math.Pow(this.starRadius, 3) * (4.0 / 3.0)) * Math.PI); //km3
this.mass = rel_mass * ParametriUtente.Science.m_sun;
this.luminosity = SimulationEngine.getLuminosityFromMass(this.mass);
this.meanDensity = (this.mass * 1000 / (Math.Pow(10, 15) * Volume)) * _densityMul;
pressione = ((ParametriUtente.Science.G
* mass
* (Converter.gcm3_to_kgm3(this.meanDensity)))
/ (this.starRadius * 1000));
this.Core_temperature = ((0.84 * Math.Pow(10, -27)) * pressione)
/ ((Converter.gcm3_to_kgm3(this.meanDensity))
* (1.380649 * Math.Pow(10, -23)));
this.Core_temperature = this.Core_temperature * 1.3;
this.Surface_temperature = SimulationEngine.getTemperatureFromLumRadiusRatio(this.starRadius, this.luminosity);//this.Core_temperature / (2717.203184);//2543.37;
if (randomGenForBlackHoles == 0)
{
this.starRadius = this.getSchwarzschildRadius();
this.Volume = ((Math.Pow(this.starRadius, 3) * (4.0 / 3.0)) * Math.PI); //km3
this.meanDensity = (this.mass * 1000 / (Math.Pow(10, 15) * Volume));
this.Surface_density = this.meanDensity;
this.Core_density = this.meanDensity;
}
this.setRelativeValues();
this.InitStarClassification();
this.finalizeStar();
}
public void createStarSystem()
{
int supportedPlanets;
double habitableZone_min;
double habitableZone_max;
double jupMass_EarthRadii = 11.209;
double multiplierFactor = 1;
double radiiMultiplierFactor = 1;
double asteroidBeltDistanceMax = 0.0, asteroidBeltDistanceMin = 0.0;
int[] supportedAsteroids = new int[] { 100, 2000 };
Random_Extension randomSeed = new Random_Extension();
this.createStarCenter();
//This is measured in AU
habitableZone_min = Math.Sqrt(this.stars.getRelLuminosity() / 1.1);
habitableZone_max = Math.Sqrt((this.stars.getRelLuminosity() / 0.53));
//everything beyond habitableZone_max has (should have) less than 0° surface temp and be either rocky(frozen) or gas giant
//everything beyond habitableZone_min has (should have) more than 40° surfacete temp and can be only a rocky barren planet.
randomSeed = new Random_Extension();
asteroidBeltDistanceMax = randomSeed.NextDouble(habitableZone_min * 0.3, habitableZone_max * 10) + ((habitableZone_max - habitableZone_min) / 2);
asteroidBeltDistanceMin = asteroidBeltDistanceMax - (habitableZone_max - habitableZone_min);
Double radii;
int c = 0;
Double distance = 0;
multiplierFactor = 5;
c = 0;
while (c < maxSupportedPlanets)
{
radii = randomSeed.NextDouble()
* ((jupMass_EarthRadii * radiiMultiplierFactor) - 0.5) + 0.5;
c++;
if (radii > 10)
{
radiiMultiplierFactor = 0.7;
}
if (c >= (int)(this.maxSupportedPlanets / 2))
{
multiplierFactor = 2;
}
distance = (randomSeed.NextDouble() * ((multiplierFactor * habitableZone_max) - 0.1) + (0.1));
ChemicalComposition chemicalComposition;
if (distance > habitableZone_max)
{
//more chances of a cold gas giant lesser chance of a cold icy planet
int planetType = randomSeed.Next(1, 5);
if (planetType < 2)
{
chemicalComposition = new ChemicalComposition(DataEngine.rockyPlanetSeed
, SimulationEngine.generateNPercentages(DataEngine.rockyPlanetSeed.Count));
//icy
}
else
{
chemicalComposition = new ChemicalComposition(DataEngine.gasPlanetSeed
, SimulationEngine.generateNPercentages(DataEngine.gasPlanetSeed.Count));
//gas giant
}
}
else if (distance < habitableZone_min)
{
//more chances of hot small-to-medium rocky-metallic planet
int planetType = randomSeed.Next(1, 5);
if (planetType < 2)
{
chemicalComposition = new ChemicalComposition(DataEngine.rockyPlanetSeed
, SimulationEngine.generateNPercentages(DataEngine.rockyPlanetSeed.Count));
if (radii > 5)
{
radii = radii / (randomSeed.Next(2, 5));
}
//rocky with atmosphere
}
else
{
chemicalComposition = new ChemicalComposition(DataEngine.rockyPlanetSeed
, SimulationEngine.generateNPercentages(DataEngine.rockyPlanetSeed.Count));
//rocky without atmosphere
}
}
else
{
//slight more chances of a planet with liquid H2O
int planetType = randomSeed.Next(1, 5);
if (planetType < 2)
{
chemicalComposition = new ChemicalComposition(DataEngine.rockyPlanetSeed
, SimulationEngine.generateNPercentages(DataEngine.rockyPlanetSeed.Count));
//generic rocky planet
}
else
{
chemicalComposition = new ChemicalComposition(DataEngine.ironPlanetSeed
, SimulationEngine.generateNPercentages(DataEngine.ironPlanetSeed.Count));
//h20
}
}
Planet createdPlanet;
if (radii < 9)
{
createdPlanet = SimulationEngine.createPlanet(chemicalComposition, radii, distance);
}
else
{
createdPlanet = SimulationEngine.createGasGiant(chemicalComposition, radii, distance);
}
this.planets.Add(createdPlanet);
c++;
}
int numberOfAsteroid = randomSeed.Next(supportedAsteroids[0], supportedAsteroids[1]);
for (int i = 0; i < numberOfAsteroid; i++)
{
ChemicalComposition chemicalComposition = null;
chemicalComposition = new ChemicalComposition(DataEngine.carbonAsteroidSeed,
SimulationEngine.generateNPercentages(DataEngine.carbonAsteroidSeed.Count, 50));
int seedGen = randomSeed.Next(1, 20);
if (seedGen < 19 && seedGen > 15)
{
chemicalComposition = new ChemicalComposition(DataEngine.siliconAsteroidSeed,
SimulationEngine.generateNPercentages(DataEngine.carbonAsteroidSeed.Count, 50));
}
else
{
chemicalComposition = new ChemicalComposition(DataEngine.carbonAsteroidSeed,
SimulationEngine.generateNPercentages(DataEngine.carbonAsteroidSeed.Count, 50));
}
int radius_Km = randomSeed.Next(1, 500);
double relMassSeed = 0.0004;
relMassSeed = relMassSeed / (500 % radius_Km);
Asteroid asteroid = new Asteroid(chemicalComposition, radius_Km, randomSeed.NextDouble(asteroidBeltDistanceMin, asteroidBeltDistanceMax));
asteroid.initAsteroid(1, relMassSeed);
this.asteroidBelt.Add(asteroid);
}
Console.WriteLine("AU min: " + habitableZone_min + " \n \tAU max: " + habitableZone_max);
}
