public static SafeMesh BuildMesh(float[,,] voxels)
{
List <Vector3> vector3s = new List <Vector3>();
List <int> nums = new List <int>();
float[] singleArray = new float[8];
Vector3[] vector3Array = new Vector3[12];
// Iterate aka march through every voxel in the 3d space
for (int i = 0; i < voxels.GetLength(0) - 1; i++)
{
for (int j = 0; j < voxels.GetLength(1) - 1; j++)
{
for (int k = 0; k < voxels.GetLength(2) - 1; k++)
{
FillCube(i, j, k, voxels, singleArray);
MarchCube(new Vector3((float)i, (float)j, (float)k), singleArray, vector3s, nums, vector3Array);
}
}
}
// Build mesh
SafeMesh safeMesh = new SafeMesh()
{
Vertices = vector3s.ToArray(),
Triangles = nums.ToArray()
};
return(safeMesh);
}
private SafeMesh GenerateCaveMap(Vector3 offsets)
{
int size = WorldBuilder.CHUNK_SIZE + 1;
Tile currentTile = WorldBuilder.GetTile(offsets);
// Gets added to coordinates, is a decimal to make sure it does not end up at an integer
float addendum = 1000.17777f;
// Coordinates are divided by scale, larger scale = larger/more spread out caves
float scale = 20f;
float[,,] caveMap = new float[size, CAVE_DEPTH * 2, size];
for (int x = 0; x < size; x++)
{
for (int z = 0; z < size; z++)
{
// -5 to make the amount of rocks sticking out of the terrain lower
int coordinateHeight = Mathf.FloorToInt(currentTile.HeightMap[x, z]) - 5;
int caveHeight = coordinateHeight + CAVE_DEPTH;
// Cave height make height dynamic based on heightmap[x,z]
for (int y = 0; y < caveHeight; y++)
{
if (y == 0)
{
caveMap[x, y, z] = 1;
}
else if (y <= 2)
{
double tempVal = ridgedMultifractal.GetValue((z + offsets.z + addendum) / scale, (y + addendum) / scale, (x + offsets.x + addendum) / scale);
int isCave = tempVal < 0 ? 0 : 1;
caveMap[x, y, z] = isCave;
}
else
{
double tempVal = ridgedMultifractal.GetValue((x + offsets.x + addendum) / scale, (y + addendum) / scale, (z + offsets.z + addendum) / scale);
int isCave = tempVal < 0.35 ? 0 : 1;
caveMap[x, y, z] = isCave;
}
}
}
}
SafeMesh safeMesh = MarchingCubes.BuildMesh(caveMap);
safeMesh.position = offsets;
return(safeMesh);
}
private void OnCaveDataReceived(SafeMesh safeMesh)
{
Tile currentTile = WorldBuilder.GetTile(safeMesh.position);
// Check if currentTile is not already unloaded
if (currentTile != null)
{
Mesh mesh = new Mesh();
mesh.vertices = safeMesh.Vertices;
mesh.triangles = safeMesh.Triangles;
currentTile.Cave.MeshFilter.mesh = mesh;
mesh.uv = GenerateUV.CalculateUVs(safeMesh.Vertices, 1);
mesh.RecalculateNormals();
currentTile.Cave.MeshCollider.sharedMesh = mesh;
currentTile.Cave.GameObject.SetActive(true);
}
}
private void CaveDataThread(Action <SafeMesh> callback, Vector3 offsets)
{
SafeMesh safeMesh = GenerateCaveMap(offsets);
caveDataThreadInfoQueue.Enqueue(new CaveThreadInfo <SafeMesh>(callback, safeMesh));
}
