public async void Initialize(uint seed)
{
Seed = seed;
var random = new FastRandom(Seed);
var settings = await MainEngine.GetEngineInstance().GeneralSettings;
m_sealevel = settings.SeaLevel;
m_mountainHeight = settings.MountainHeight - m_sealevel;
var rescale = settings.BiomeSampleRescale;
m_detailScale = settings.DetailScale;
m_sinkHoleDepth = settings.SinkHoleDepth;
m_biomeThickness = settings.BiomeThickness;
m_elevation = new SimplexNoise2D(random.NextUInt());
m_detail = new SimplexNoise2D(random.NextUInt());
m_detail2 = new SimplexNoise2D(random.NextUInt());
m_volume = new SimplexNoise3D(random.NextUInt());
m_voroni = new CellNoise2D(random.NextUInt());
m_populator = new StructureGenerator(random.NextUInt());
m_riverGenerator = new PathGenerator(random.NextUInt(), GetHeight);
m_riverGenerator.InitializePathSystem(0, 0, 256);
m_biomeGenerator = new BiomeGeneratorCollection(random.NextUInt(), GetHeight, settings.Biomes, rescale, m_sealevel, m_mountainHeight);
m_provinceGenerator = new ProvinceGeneratorCollection(random.NextUInt(), GetHeight, settings.Provinces, rescale, m_sealevel, m_mountainHeight);
IsInitialized = true;
}
private PathData BuildPathData(SimplexNoise2D noise, int x, int z, int w, Vector2 gradient, GetHeight getHeightFunction, int previousHeight)
{
var radius = noise.Perlin(x, z) * 1 + 2;
return new PathData(radius, x, z, w, gradient, getHeightFunction, previousHeight);
}
private List<PathData> GeneratePath(SimplexNoise2D noise, GetHeight getHeightFunction, PathGraphNode origin, PathGraphNode destination)
{
var originProjection = new Vector2(origin.Position.X, origin.Position.Z);
var destinationProjection = new Vector2(destination.Position.X, destination.Position.Z);
var gradient = Vector2.Subtract(destinationProjection, originProjection);
var distance = gradient.LengthSquared();
gradient.Normalize();
//just checking if we'll get a NaN so the quality oprtator should be fine
// ReSharper disable CompareOfFloatsByEqualityOperator
var deltaX = gradient.X == 0 ? 0 : 1 / Math.Abs(gradient.X);
var deltaZ = gradient.Y == 0 ? 0 : 1 / Math.Abs(gradient.Y);
if (deltaX == 0 && deltaZ == 0)
{
return new List<PathData>();
}
var stepX = Math.Sign(gradient.X);
var stepZ = Math.Sign(gradient.Y);
var maxX = 0.0f;
var maxZ = 0.0f;
var x = (int)origin.Position.X;
var z = (int)origin.Position.Z;
var previousHeight = (int)origin.Position.Y;
var path = new List<PathData>();
do
{
var node = BuildPathData(noise, x, z, 0, gradient, getHeightFunction, previousHeight);
path.Add(node);
previousHeight = (int)node.Position.Y;
if (deltaZ == 0 || (deltaX != 0 && maxX < maxZ))
{
maxX += deltaX;
x += stepX;
}
else
{
maxZ += deltaZ;
z += stepZ;
}
} while (Vector2.DistanceSquared(originProjection, new Vector2(x, z)) <= distance);
// ReSharper restore CompareOfFloatsByEqualityOperator
return path;
}
public PathNodeList(PathGraphNode head, GetHeight getHeightFunction)
{
var noise = new SimplexNoise2D(head.Id);
Head = head;
var stack = new Stack<PathGraphNode>();
var minPosX = float.MaxValue;
var minPosZ = float.MaxValue;
var maxPosX = -float.MaxValue;
var maxPosZ = -float.MaxValue;
m_slices = new Dictionary<PathGraphNode, Dictionary<PathGraphNode, Lazy<List<PathData>>>>();
stack.Push(head);
while (stack.Count > 0)
{
var node = stack.Pop();
var nodePos = node.Position;
if (nodePos.X < minPosX) minPosX = nodePos.X;
if (nodePos.Z < minPosZ) minPosZ = nodePos.Z;
if (nodePos.X > maxPosX) maxPosX = nodePos.X;
if (nodePos.Z > maxPosZ) maxPosZ = nodePos.Z;
if (node.Edges.Count(val => val.Value > 0) == 0)
{
continue;
}
m_slices[node] = new Dictionary<PathGraphNode, Lazy<List<PathData>>>();
foreach (var graphNode in node.Edges)
{
if (graphNode.Value < 0)
{
continue;
}
m_slices[node][graphNode.Key] = new Lazy<List<PathData>>(() => GeneratePath(noise,
getHeightFunction, node,
graphNode.Key));
stack.Push(graphNode.Key);
}
}
BoundingBox = new BoundingBox(new Vector3(minPosX - 1.5f, 0, minPosZ - 1.5f), new Vector3(maxPosX + 1.5f, 0, maxPosZ + 1.5f));
}