public static PatchCoordinates FromTile(TileCoordinates tileCoordinates)
{
var coordinates = new PatchCoordinates()
{
X = tileCoordinates.X / PatchWidth,
Y = tileCoordinates.Y / PatchHeight
};
if (tileCoordinates.X < 0)
{
coordinates.X--;
}
if (tileCoordinates.Y < 0)
{
coordinates.Y--;
}
return(coordinates);
}
public TileType[,] GenerateWorldPatch(PatchCoordinates patchCoordinates)
{
Debug.Assert(this.patchCache != null && this.patchCache.GetLength(0) == PatchCoordinates.PatchWidth && this.patchCache.GetLength(1) == PatchCoordinates.PatchHeight, "Invalid world patch");
System.Array.Clear(this.patchCache, 0, PatchCoordinates.PatchWidth * PatchCoordinates.PatchHeight);
Random random = new Random(this.Settings.Seed.GetHashCode() + patchCoordinates.GetHashCode());
// Generate terrain type.
for (int octave = 1; octave < NoiseOctaveCount; octave++)
{
Noise.GenerateStretchNoise(this.noiseByOctave[0], patchCoordinates.X, patchCoordinates.Y, octave, Noise.LinearInterpolation, ref this.noiseByOctave[octave]);
}
float perlinPersistance = System.Math.Max(this.Settings.ChaosLevel, 0.01f);
Noise.GeneratePerlinNoise(this.noiseByOctave, perlinPersistance, ref this.floatCache);
for (int i = 0; i < PatchCoordinates.PatchWidth; i++)
{
for (int j = 0; j < PatchCoordinates.PatchHeight; j++)
{
if (this.floatCache[i, j] > this.Settings.SeaLevel)
{
this.patchCache[i, j] = TileType.Grass;
}
else
{
this.patchCache[i, j] = TileType.Water;
}
}
}
// Grow water tiles to avoid invalid patterns.
System.Array.Clear(this.patchOperationCache, 0, PatchCoordinates.PatchWidth * PatchCoordinates.PatchHeight);
for (int i = 0; i < PatchCoordinates.PatchWidth; i++)
{
for (int j = 0; j < PatchCoordinates.PatchHeight; j++)
{
if (this.patchCache[i, j] == TileType.Water)
{
var tile = new World.TileCoordinates(i, j);
foreach (var neighbour in tile.GetNeighbours())
{
if (neighbour.X < 0 || neighbour.Y < 0 || neighbour.X >= PatchCoordinates.PatchWidth || neighbour.Y >= PatchCoordinates.PatchHeight)
{
continue;
}
this.patchOperationCache[neighbour.X, neighbour.Y] = TileType.Water;
}
}
}
}
for (int i = 0; i < PatchCoordinates.PatchWidth; i++)
{
for (int j = 0; j < PatchCoordinates.PatchHeight; j++)
{
if (this.patchOperationCache[i, j] == TileType.Water)
{
this.patchCache[i, j] = TileType.Water;
}
}
}
return(this.patchCache);
}
