public void BuildTerrain()
{
InitBlocks(HSIZE, VSIZE, HSIZE);
for (int x = 0; x < HSIZE; x++)
{
for (int z = 0; z < HSIZE; z++)
{
Block lastType = Block.AIR;
for (int y = VSIZE - 1; y >= 0; y--)
{
NoiseWaves waves = GetNoiseWaves(x + blockWorldOffset.X, 0, z + blockWorldOffset.Z);
float blockHeight = y + blockWorldOffset.Y;
double density = GetDensity(waves, blockHeight);
if (density >= MIN_BLOCK_DENSITY)
{
if (lastType == Block.AIR)
{
Blocks[z, y, x] = lastType = Block.GRASS;
}
else
{
Blocks[z, y, x] = lastType = Block.STONE;
}
}
}
}
}
//for (int x = 0; x < HSIZE; x++)
//{
// float xf = x + Position.X / Block.CUBE_SIZE;
// for (int z = 0; z < HSIZE; z++)
// {
// float zf = z + Position.Z / Block.CUBE_SIZE;
// Block lastType = Block.AIR;
// for (int y = VSIZE - 1; y >= 0; y--)
// {
// float yf = y + Position.Y / Block.CUBE_SIZE;
// double density = p.GetValue(xf / 48, yf / 48, zf / 48);
// if (density >= MIN_BLOCK_DENSITY)
// {
// if (lastType == Block.AIR)
// Blocks[z, y, x] = lastType = Block.GRASS;
// else
// Blocks[z, y, x] = lastType = Block.STONE;
// }
// }
// }
//}
}
public static double GetDensity(NoiseWaves waves, float y)
{
double yd = (double)y / 48; // [0, 2]
double yd2 = (double)y / (48 * 2 * rand); // [0, 1]
double invYd = 1 - yd; // [0, 1]
double mixedWave = Maths.Mix(waves.PrimaryWave, waves.PrimaryWave * waves.SecondaryWave, yd2);
double density = mixedWave - (yd / 2d);
density = Maths.ReScale(density, -1, 1, -0.8 + invYd, 0.9);
return(density);
}