public Chunk Generate(Vector3 position)
{
const float MaxHeight = 14.0f;
var chunk = new Chunk(position);
float scaleX = 0.5f;
float scaleZ = 0.5f;
float sx = 1.0f / (Chunk.Width * scaleX);
float sz = 1.0f / (Chunk.Depth * scaleZ);
for (uint x = 0; x < Chunk.Width; ++x)
{
for (uint z = 0; z < Chunk.Depth; ++z)
{
float amplitude = _amplitude;
float frequency = _frequency;
float height = 0.0f;
for (uint octave = 0; octave < _octaves; ++octave)
{
float mx = (position.X + x) * frequency;
float mz = (position.Z + z) * frequency;
var result = _noise.Evaluate(mx * sx, mz * sz);
height += (float)Math.Max(Math.Min(result, 1.0), -1.0) * amplitude;
frequency *= 2.0f;
amplitude /= 2.0f;
}
height = (height + 1.0f) / 2.0f;
float hy = (float)Math.Round(height * MaxHeight);
for (uint y = 0; y < Chunk.Height; ++y)
{
float my = (position.Y + y);
if (my <= hy)
{
chunk.Set(x, y, z, BlockType.Dirt);
}
else
{
chunk.Set(x, y, z, BlockType.Air);
}
}
}
}
return(chunk);
}
