public void Grow(StarGenerator starGenerator)
{
//set length + size
length = RandomHelper.GetRandomInt(1, 14);
size = RandomHelper.GetRandomInt(2, 5);
Star firstNebula = fieldsToCheck.First();
//create a line of nebulas (later a curve)
var angle = RandomHelper.GetRandomFloat(0, 1) * Math.PI * 2;
var x = (int)(Math.Cos(angle) * length);
var y = (int)(Math.Sin(angle) * length);
line(starGenerator, firstNebula.X, firstNebula.Y, firstNebula.X + x, firstNebula.Y + y, firstNebula.StarNebulaType);
// x can be negative or positive
/*
* for (int xstart = (x < 0 ? x : 0); xstart < (x < 0 ? 0 : x) ; xstart++)
* {
* for (int ystart = (y < 0 ? y : 0); ystart < (y < 0 ? 0 : y); ystart++)
* {
* if (xstart == 0 && ystart == 0) continue;
* fieldsToCheck.Add(starGenerator.MakeNebula(firstNebula.X + xstart, firstNebula.Y + ystart, firstNebula.StarNebulaType));
* }
* }
*/
/*
* if (x != 0 || y != 0)
* fieldsToCheck.Add(starGenerator.MakeNebula(firstNebula.X + x, firstNebula.Y + y, firstNebula.StarNebulaType));
*
* x = (int)(Math.Cos(angle) * length / 2);
* y = (int)(Math.Sin(angle) * length / 2);
* if (x != 0 || y != 0)
* fieldsToCheck.Add(starGenerator.MakeNebula(firstNebula.X + x, firstNebula.Y + y, firstNebula.StarNebulaType));
*/
for (var i = 1; i < length; i++)
{
//fieldsToCheck.Add(starGenerator.MakeNebula(firstNebula.X + i, firstNebula.Y + 0, firstNebula.StarNebulaType));
}
foreach (var z in fieldsToCheck)
{
//create filled circle around the current nebula
for (y = -size; y <= size; y++)
{
for (x = -size; x <= size; x++)
{
if (x * x + y * y <= size * size * 0.8f)
{
//setpixel(origin.x + x, origin.y + y);
if (!StarExists(z.X + x, z.Y + y))
{
fieldsAfterGrow.Add(starGenerator.MakeNebula(z.X + x, z.Y + y, z.StarNebulaType));
}
}
}
}
}
//fieldsAfterGrow.ForEach(e => e.NebulaPercentage = fieldsAfterGrow.Count(n => n.X >= e.X - 1 && n.X <= e.X + 1 && n.Y >= e.Y - 1 && n.Y <= e.Y + 1));
//remove some of the outermost nebula fields - but never the ones that were created as starting line/curve of the nebula
//count all neighbours of each field - also counts the field itself
fieldsAfterGrow.ForEach(e => e.neighbourCount = fieldsAfterGrow.Count(n => n.X >= e.X - 1 && n.X <= e.X + 1 && n.Y >= e.Y - 1 && n.Y <= e.Y + 1));
fieldsAfterGrow.RemoveAll(e => e.neighbourCount != 8 && e.neighbourCount != 9 && e.neighbourCount < RandomHelper.GetRandomInt(0, 12));
fieldsAfterGrow.ForEach(e => fields.Add(e));
}