/// <summary>
/// Generate additional 3D objects using the heightmap and surrounding blocks
/// </summary>
private void GenerateExtraObjects(Biome biome, VoxelCache cache, int x, int z)
{
int newOffsetX = (int)(offset.X + (x * cache.SizeX));
int newOffsetZ = (int)(offset.Z + (z * cache.SizeZ));
int seed = cache.GetHashCode() ^ ((newOffsetX << 13) + (newOffsetZ >> 5));// ^ cache.MapSeed;
Random rnd = new Random(seed);
int localX = rnd.Next(cache.SizeX) ^ (mapSeed & 0x1f);
int localZ = rnd.Next(cache.SizeZ) ^ (mapSeed & 0x1f);
localX++;
localZ++;
float objectDist = Noise.Simplex.Generate(
(float)(((float)newOffsetX / 800f) + 120f),
(float)(((float)newOffsetZ / 800f) + 100f));
objectDist = (float)Math.Pow((objectDist * 0.5f) + 0.5f, 1.2f);
int objectChance = rnd.Next(100);
int chance = (int)(objectDist * 100f) / 2;
// We can grab the height value instantly from the noise pattern
float height = biome.GetBaseHeight(localX + newOffsetX, localZ + newOffsetZ, false);
if (height < 80 && objectChance < chance)
{
Engine.TreePopulator treePopulator = new Engine.TreePopulator(biome, cache.voxels[offset], rnd);
treePopulator.Populate(
localX + (x * cache.SizeX),
localZ + (z * cache.SizeZ),
(int)height, cache.SizeX);
}
}
/// <summary>
/// Offset the location (usually to rebuild)
/// </summary>
/// <param name="offset"></param>
public void OffsetLocation(Point offset, SpeedyDictionary chunkCollection)
{
// Remove old chunks and update location
for (int i = 0; i < chunks.Length; ++i)
{
chunkCollection.Remove(new Vector3(location.X, i * chunkSize, location.Y));
}
this.location.X += offset.X;
this.location.Y += offset.Y;
// Update the chunk locations as well
for (int i = 0; i < chunks.Length; ++i)
{
chunks[i].SetLocation(new Vector3(location.X, i * chunkSize, location.Y));
}
// Reset biome location and generate 2D biome map data
biome.SetLocation(location);
Parallel.For(0, chunkSize + 2, x =>
{
for (int z = 0; z < chunkSize + 2; ++z)
{
biome.GetBaseHeight(x, z, true);
biome.GetLocalHumidity(x, z, 0.05f, true);
}
});
// Set dirty flag
state = ChunkState.Dirty;
}