public static void CreateSlopes(TerrainData data, int baseSeed)
{
var plane = data.Size.Plane;
plane.Range().AsParallel().ForAll(p =>
{
int z = data.GetHeight(p);
int count = 0;
Direction dir = Direction.None;
var r = new MWCRandom(p, baseSeed);
int offset = r.Next(8);
// Count the tiles around this tile which are higher. Create slope to a random direction, but skip
// the slope if all 8 tiles are higher.
// Count to 10. If 3 successive slopes, create one in the middle
int successive = 0;
for (int i = 0; i < 10; ++i)
{
var d = DirectionExtensions.PlanarDirections[(i + offset) % 8];
var t = p + d;
if (plane.Contains(t) && data.GetHeight(t) > z)
{
if (i < 8)
count++;
successive++;
if (successive == 3)
{
dir = DirectionExtensions.PlanarDirections[((i - 1) + offset) % 8];
}
else if (dir == Direction.None)
{
dir = d;
}
}
else
{
successive = 0;
}
}
if (count > 0 && count < 8)
{
var p3d = new IntPoint3(p, z);
var td = data.GetTileData(p3d);
td.TerrainID = dir.ToSlope();
data.SetTileData(p3d, td);
}
});
}
public static void CreateSoil(TerrainData data, int soilLimit)
{
int w = data.Width;
int h = data.Height;
for (int y = 0; y < h; ++y)
{
for (int x = 0; x < w; ++x)
{
int z = data.GetHeight(x, y);
var p = new IntPoint3(x, y, z);
if (z < soilLimit)
{
var td = data.GetTileData(p);
td.TerrainMaterialID = MaterialID.Loam;
data.SetTileData(p, td);
}
}
}
}
