static void makeStructures(PlanetData planet, IRandomGenerator gen)
{
planet.structuresPrefabs = new List <GameObject>();
planet.structures = new List <StructureInfo>();
int[] structStartIndex = new int[planet.biomes.Length];
for (int i = 0; i < planet.biomes.Length; i++)
{
structStartIndex[i] = planet.structuresPrefabs.Count;
foreach (var s in planet.biomes[i].structures)
{
planet.structuresPrefabs.Add(s.prefab);
}
}
var dAngle = new UniformFloatDistribution(0, 360.0f);
for (int i = 0; i < planet.triangles.Length; i++)
{
int biomeId = PlanetEx.biomeIndexOfTriangle(planet, i);
if (biomeId < 0)
{
continue;
}
if (planet.biomes[biomeId].structureDensity <= 0 || planet.biomes[biomeId].structures.Count == 0)
{
continue;
}
var t = planet.triangles[i];
float area = MathEx.triangleArea(planet.points[t.v1].point, planet.points[t.v2].point, planet.points[t.v3].point) * planet.biomes[biomeId].structureDensity;
float v = area - (int)area;
if (new BernoulliDistribution(v).Next(gen))
{
area = (int)area + 1;
}
else
{
area = (int)area;
}
var p1 = planet.points[t.v1].point * (planet.points[t.v1].height + 1) * planet.scale;
var p2 = planet.points[t.v2].point * (planet.points[t.v2].height + 1) * planet.scale;
var p3 = planet.points[t.v3].point * (planet.points[t.v3].height + 1) * planet.scale;
var d = new Uniform3DTriangleDistribution(p1, p2, p3);
List <float> weights = new List <float>();
for (int j = 0; j < planet.biomes[biomeId].structures.Count; j++)
{
weights.Add(planet.biomes[biomeId].structures[j].weight);
}
var dStructs = new DiscreteDistribution(weights);
for (int j = 0; j < area; j++)
{
var pos = d.Next(gen);
planet.structures.Add(new StructureInfo(dStructs.Next(gen) + structStartIndex[biomeId], i, pos, dAngle.Next(gen)));
}
}
}