public BiomeTile[,] Generate(int sizeX, int sizeY, int nThreads, int seed)
{
BiomeTile[,] tiles = new BiomeTile[sizeX, sizeY];
Func <Vector3, float, float> sampler = (pos, scale) =>
NoiseAlgos3D.LinearNoise(pos * scale);
float seedF = (float)seed;
ThreadedRunner.Run(nThreads, sizeY,
(startY, endY) =>
{
for (int y = startY; y <= endY; ++y)
{
float yF = (float)y;
for (int x = 0; x < sizeX; ++x)
{
float xF = (float)x;
tiles[x, y] = new BiomeTile();
tiles[x, y].CaveSmoothness = Noise.Sample(new Vector3(xF, yF, seedF),
sampler);
}
}
});
return(tiles);
}
/// <summary>
/// Returns the tiles as booleans indicating whether they're solid.
/// </summary>
public bool[,] Generate(BiomeTile[,] biomes, List <Room> rooms, int nThreads, int seed)
{
//Use a blend between a room's biome and the tile's own biome.
BiomeTile[,] oldBiomes = biomes;
biomes = new BiomeTile[oldBiomes.GetLength(0), oldBiomes.GetLength(1)];
foreach (Vector2i tilePos in biomes.AllIndices())
{
Room r = rooms.FirstOrDefault(_r => _r.Spaces.Contains(tilePos));
if (r == null)
{
biomes.Set(tilePos, oldBiomes.Get(tilePos));
}
else
{
biomes.Set(tilePos, new BiomeTile(r.Biome, oldBiomes.Get(tilePos), TileVariation));
}
}
//Turn the room data into a grid of tiles.
bool[,] tiles1 = new bool[biomes.GetLength(0), biomes.GetLength(1)];
foreach (Vector2i tilePos in tiles1.AllIndices())
{
tiles1.Set(tilePos, !rooms.Any(r => r.Spaces.Contains(tilePos)));
}
//Create a second copy to ping-pong back and forth between iterations.
bool[,] tiles2 = new bool[tiles1.GetLength(0), tiles1.GetLength(1)];
foreach (Vector2i tilePos in tiles2.AllIndices())
{
tiles2.Set(tilePos, tiles1.Get(tilePos));
}
//Run the cellular automata.
for (int i = 0; i < NIterations; ++i)
{
ThreadedRunner.Run(nThreads, tiles1.GetLength(1),
(startI, endI) => RunIteration(startI, endI, biomes, seed, tiles1, tiles2));
//Swap tiles1 and tiles2.
bool[,] _tiles1 = tiles1;
tiles1 = tiles2;
tiles2 = _tiles1;
}
return(tiles1);
}
public Room(BiomeTile biome, RectI bounds)
{
Biome = biome;
OriginalBounds = bounds;
}
public BiomeTile(BiomeTile a, BiomeTile b, float t)
{
CaveSmoothness = Mathf.Lerp(a.CaveSmoothness, b.CaveSmoothness, t);
}