public PointF[] GenerateArm(int numOfStars, float rotation, float spin, double armSpread, int armNo)
{
PointF[] result = new PointF[numOfStars];
Random r = new Random();
//stars = armNo % 2 = 0
//nebual = armNo % 2 != 0
double armSpread2 = armSpread;
if (armNo % 2 != 0)
{
numOfStars = numOfStars / 2;
}
for (int i = 0; i < numOfStars; i++)
{
if (armNo % 2 != 0)
{
//ToDo: both values should be parameters, in the form and contract
// skip the first nebulas, so that the center remains clean
if (i < 7)
{
continue;
}
//reduce armspread if the nebula is near the center
armSpread2 = armSpread;
if (i < 200)
{
armSpread2 = armSpread2 * ((i + 1) / 200.0);
}
}
var centerRatio = armNo % 2 == 0 ? starsAtCenterRatio : nebulaAtCenterRatio;
double part = (double)i / (double)numOfStars;
part = Math.Pow(part, centerRatio);
float distanceFromCenter = (float)part;
double position = (part * spin + rotation) * Math.PI * 2;
double xFluctuation = (Pow3Constrained(r.NextDouble()) - Pow3Constrained(r.NextDouble())) * armSpread2;
double yFluctuation = (Pow3Constrained(r.NextDouble()) - Pow3Constrained(r.NextDouble())) * armSpread2;
float resultX = (float)Math.Cos(position) * distanceFromCenter / 2 + 0.5f + (float)xFluctuation;
float resultY = (float)Math.Sin(position) * distanceFromCenter / 2 + 0.5f + (float)yFluctuation;
result[i] = new PointF(resultX, resultY);
Star star = transform(result[i], armNo % 2 == 0 ? 1 : 2);
//this.stars.Add(star);
Map.addStar(star);
}
return(result);
}
public void SpreadNebula()
{
GalaxyMap temporaryNebulas = new GalaxyMap(Map.Settings);
foreach (var star in Map.stars)
{
if (star.StarNebulaType == 1)
{
continue;
}
//spread temporary nebula (StarNebulaType = 3) in a circle with a radius of 4 fields:
for (int x = star.X - 4; x < star.X + 4; x++)
{
for (int y = star.Y - 4; y < star.Y + 4; y++)
{
if (x == star.X && y == star.Y)
{
continue;
}
var distance = Math.Sqrt(((star.X - x) * (star.X - x)) + ((star.Y - y) * (star.Y - y)));
var probability = (1 / distance) * 30;
//try to find;
//Star checker = new Star(x, y, 3, this);
Star checker = StarGenerator.MakeStarXY(false, x, y);
checker.StarNebulaType = 3;
temporaryNebulas.addStar(checker, false, false);
checker.NebulaPercentage += (int)probability;
}
}
}
Random r = new Random();
//temporaryNebulas.stars.ForEach(e => Map.addStar(e,false,false));
//stars.AddRange(toAdd);
foreach (var star in temporaryNebulas.stars)
{
if (star.NebulaPercentage < 8)
{
continue;
}
int percentage = Math.Min(star.NebulaPercentage, 90);
int rand = r.Next(100);
if (rand < percentage)
{
star.StarNebulaType = 2;
Map.addStar(star, false, true);
}
}
//this.Refresh();
}
public void GenerateMap(bool shake = true, bool round = true)
{
int id = 0;
for (int i = 0; i < starsInRow; i++)
{
for (int j = 0; j < starsInRow; j++)
{
int x = (i * distanceBetweenSuns) + 2;
int y = (j * distanceBetweenSuns) + 2;
var isPlayer = id % StarsPerPlayer == 0 ? true : false;
Star tempStar = StarGenerator.MakeStarXY(isPlayer, x, y);
tempStar.Id = id;
if (shake)
{
ShakePosition(tempStar);
}
stars.Add(tempStar);
starsToShake.Add(tempStar);
id++;
}
}
if (Textbox != null)
{
Textbox.Text = id.ToString() + " - " + stars.Count.ToString() + " generierte Star Location: " + Environment.NewLine;
}
//needed because stars may be too near to each other when shaking was used during star placement
if (shake)
{
shakeAndCheck(0);
}
//make a round galaxy.
if (round)
{
MakeRound();
}
stars.ForEach(e => Map.addStar(e));
}