private static ushort[] Populate(Vector2I chunkCoords, ushort[] indices, Vector3I[] surfaces)
{
double treeDensity = 0.005D;
int chunkHash = chunkCoords.GetHashCode() * Seed.Value;
Random treeRandom = new Random(chunkHash);
Structure tree = Structure.Get("Tree");
ushort dirtID = ItemCache.GetIndex("winecrash:dirt");
ushort grassID = ItemCache.GetIndex("winecrash:grass");
ushort debugID = ItemCache.GetIndex("winecrash:direction");
// do trees
for (int i = 0; i < surfaces.Length; i++)
{
int flatten = WMath.Flatten3D(surfaces[i].X, surfaces[i].Y, surfaces[i].Z, Chunk.Width, Chunk.Height);
bool doTree = treeRandom.NextDouble() < treeDensity;
if ((indices[flatten] == dirtID || indices[flatten] == grassID) && doTree)
{
indices[flatten] = dirtID;
PlaceStructure(tree, LocalToGlobal(chunkCoords, new Vector3D(surfaces[i].X, surfaces[i].Y + 1, surfaces[i].Z)), false);
}
}
return(indices);
}
private static ushort[] PaintLandmass(Vector2I chunkCoords, ushort[] indices, out Vector3I[] surfaces)
{
ushort airID = ItemCache.GetIndex("winecrash:air");
ushort stoneID = ItemCache.GetIndex("winecrash:stone");
ushort grassID = ItemCache.GetIndex("winecrash:grass");
ushort dirtID = ItemCache.GetIndex("winecrash:dirt");
ushort sandID = ItemCache.GetIndex("winecrash:sand");
ushort waterID = ItemCache.GetIndex("winecrash:water");
ushort bedrockID = ItemCache.GetIndex("winecrash:bedrock");
//ushort[] indices = new ushort[Chunk.Width * Chunk.Height * Chunk.Depth];
Vector3F shift = Vector3F.Zero;
Vector3F basePos = new Vector3F((chunkCoords.X * Chunk.Width) + shift.X, shift.Y, (chunkCoords.Y * Chunk.Depth) + shift.Z);
ConcurrentBag <Vector3I> allSurfaces = new ConcurrentBag <Vector3I>();
// for each x and z, for y from top to bottom:
for (int i = 0; i < Chunk.Width * Chunk.Depth; i++)
{
//Parallel.For(0, Chunk.Width /** Chunk.Height*/ * Chunk.Depth, i =>
//{
// get the x / z position
WMath.FlatTo2D(i, Chunk.Width, out int x, out int z);
int surfaceHeight = Chunk.Height - 1;
bool heightFound = false;
for (int y = Chunk.Height - 1; y > -1; y--)
{
int idx = WMath.Flatten3D(x, y, z, Chunk.Width, Chunk.Height);
// if height already have been found, check back if
// there is a surface or not (3D terrain, like grass under arches or so)
if (heightFound)
{
if (indices[idx] == airID) // if air found, reset height
{
surfaceHeight = y;
heightFound = false;
}
}
else
{
surfaceHeight = y;
if (indices[idx] != airID)
{
heightFound = true;
allSurfaces.Add(new Vector3I(x, y, z));
}
}
// second pass: check the difference between surface and
// the current block height.
if (heightFound)
{
int deltaHeight = surfaceHeight - y;
bool ocean = surfaceHeight < 64;
// surface => grass
if (deltaHeight == 0)
{
indices[idx] = ocean ? sandID : grassID;
}
// dirt, under the grass
else if (deltaHeight < 3)
{
indices[idx] = ocean ? sandID : dirtID;
}
}
if (y < 64 && indices[idx] == airID)
{
indices[idx] = waterID;
}
if (y < 3)
{
double chance = Winecrash.Random.NextDouble();
if (y == 2 && chance < 0.33)
{
indices[idx] = bedrockID;
}
else if (y == 1 && chance < 0.66)
{
indices[idx] = bedrockID;
}
else if (y == 0)
{
indices[idx] = bedrockID;
}
}
}
//Vector3F finalPos = new Vector3F((basePos.X + x) * baseLandmassScale, basePos.Y + y,
// (basePos.Z + z) * baseLandmassScale) * globalScale;
//});
}
surfaces = allSurfaces.ToArray();
return(indices);
}