public void PopulateChunk(World world, Chunk chunk, ChunkPosition position)
{
var rand = new Random((int)world.Seed);
var perlin = new PerlinNoiseOctaveHelper((rand.Next() << 16) | rand.Next(), 8, 3);
var mountainPerlin = new PerlinNoiseOctaveHelper((rand.Next() << 16) | rand.Next(), 8, 3);
var cavePerlin = new PerlinNoiseOctaveHelper((rand.Next() << 16) | rand.Next(), 5, 3);
var temperaturePerlin = new PerlinNoiseOctaveHelper((rand.Next() << 16) | rand.Next(), 5, 3);
var humidityPerlin = new PerlinNoiseOctaveHelper((rand.Next() << 16) | rand.Next(), 5, 3);
if (!StaticReferences.ParallelMode)
{
for (byte x = 0; x < 16; x++)
{
for (byte z = 0; z < 16; z++)
{
PerlinGeneration(world.Seed, chunk, position, perlin, mountainPerlin, cavePerlin, temperaturePerlin, humidityPerlin, x, z);
}
}
}
else
{
Parallel.For(0, 256, (i) =>
{
PerlinGeneration(world.Seed, chunk, position, perlin, mountainPerlin, cavePerlin, temperaturePerlin, humidityPerlin, (byte)(i % 16), (byte)(i / 16));
});
}
}
private void PerlinGeneration(long seed, Chunk chunk, ChunkPosition position,
PerlinNoiseOctaveHelper perlin, PerlinNoiseOctaveHelper mountainPerlin, PerlinNoiseOctaveHelper cavePerlin,
PerlinNoiseOctaveHelper temperaturePerlin, PerlinNoiseOctaveHelper humidityPerlin, byte x, byte z)
{
var rand = new Random((int)seed);
rand = new Random((position.X * 16 + x) * rand.Next() * (position.Z * 16 + z) * rand.Next());
var frequency = 0.0005f;
var moutainFrequency = 0.00005f;
var caveFrequency = 0.003f;
var temperatureFrequency = 0.0003f;
var temperature = (byte)MAX(MIN(MAP((float)temperaturePerlin.Noise((position.X * 16 + x) * temperatureFrequency, 0, (position.Z * 16 + z) * temperatureFrequency), -0.5f, 0.5f, 0, 255), 255), 0);
_chunkManager.SetTemperature(chunk, x, z, temperature);
var humidityFrequency = 0.0003f;
var humidity = (byte)MAX(MIN(MAP((float)humidityPerlin.Noise((position.X * 16 + x) * humidityFrequency, 0, (position.Z * 16 + z) * humidityFrequency), -0.5f, 0.5f, 0, 255), 255), 0);
_chunkManager.SetHumidity(chunk, x, z, humidity);
var perlinResult = perlin.Noise(((position.X * 16 + x)) * frequency, 0, ((position.Z * 16 + z)) * frequency);
var mountainPerlinResult = mountainPerlin.Noise(((position.X * 16 + x)) * moutainFrequency, 0, ((position.Z * 16 + z)) * moutainFrequency);
var perlinHeight = MAP((float)perlinResult, -0.5f, 0.5f, 60, 70) * MAP((float)((mountainPerlinResult + 0.5f) * (temperature / 255f)), 0, 1f, 0.5f, 4);
if (perlinHeight < 0)
{
perlinHeight = 0;
}
else if (perlinHeight > 255)
{
perlinHeight = 255;
}
byte height = (byte)perlinHeight;
for (byte y = 0; y < height; y++)
{
var cavePerlinResult = ((float)cavePerlin.Noise(((position.X * 16 + x)) * caveFrequency, y * caveFrequency, ((position.Z * 16 + z)) * caveFrequency) + 0.5f) * ((y) / 64f);
cavePerlinResult = MIN(MAP(cavePerlinResult, 0f, 0.1f, 0.1f, 0.2f), cavePerlinResult);
if (cavePerlinResult > 0.04f)
{
if (temperature > 160 || humidity > 64)
{
if (y == height - 1)
{
if (y > 0 && _chunkManager.GetBlockId(chunk, x, (byte)(y - 1), z) != 0 && rand.Next(10) == 0)
{
_chunkManager.SetBlockId(chunk, x, y, z, 31);
}
}
else if (y == height - 2)
{
_chunkManager.SetBlockId(chunk, x, y, z, 2);
}
else if (y >= height - 5)
{
_chunkManager.SetBlockId(chunk, x, y, z, 3);
}
else
{
_chunkManager.SetBlockId(chunk, x, y, z, 1);
}
}
else
{
if (y == height - 1)
{
if (rand.Next(30) == 0)
{
_chunkManager.SetBlockId(chunk, x, y, z, 31);
}
}
else if (y < height - 1 && y >= height - 4)
{
_chunkManager.SetBlockId(chunk, x, y, z, 12);
}
else if (y >= height - 6)
{
_chunkManager.SetBlockId(chunk, x, y, z, 24);
}
else
{
_chunkManager.SetBlockId(chunk, x, y, z, 1);
}
}
}
}
}