/// <summary>
/// Get surface height on x.
/// </summary>
/// <returns>The height.</returns>
/// <param name="x">The x coordinate.</param>
public float HeightMap(float x)
{
return(BASE_HEIGHT + (float)((NoiseMap.Evaluate(x / (Chunk.SIZE * 32), 0) - 0.5) *
BASE_STEP + 8 * NoiseMap.Evaluate(x / 128, Chunk.SIZE)));
}