@Override
public BiomeManager generate(CuboidShortBuffer blockData, int chunkX, int chunkY, int chunkZ) {
if (chunkY >= 0) {
return super.generate(blockData, chunkX, chunkY, chunkZ);
}
blockData.flood(VanillaMaterials.BEDROCK.getId());
return new EmptyBiomeManager(chunkX, chunkY, chunkZ);
}
private short getBlockId(int top, int dy) {
short id;
if (dy > top) {
id = VanillaMaterials.AIR.getId();
} else if (dy + 4 >= top) {
id = VanillaMaterials.SAND.getId();
} else if (dy + 5 == top) {
id = VanillaMaterials.SANDSTONE.getId();
} else if (dy != 0) {
id = VanillaMaterials.STONE.getId();
} else {
id = VanillaMaterials.BEDROCK.getId();
}
return id;
}
@Override
protected void generateTerrain(
CuboidShortBuffer blockData, int x, int y, int z, BiomeManager biomes, long seed) {
if (y >= HEIGHT) {
return;
}
final Vector3 size = blockData.getSize();
final int sizeX = size.getFloorX();
final int sizeY = MathHelper.clamp(size.getFloorY(), 0, HEIGHT);
final int sizeZ = size.getFloorZ();
ELEVATION.setSeed((int) seed * 23);
ROUGHNESS.setSeed((int) seed * 29);
DETAIL.setSeed((int) seed * 17);
TURBULENCE.setSeed((int) seed * 53);
final Random random = WorldGeneratorUtils.getRandom(seed, x, y, z, 6516);
final double[][][] noise =
WorldGeneratorUtils.fastNoise(FINAL, sizeX, sizeY, sizeZ, 4, x, y, z);
final BiomeSelector selector = getSelector();
final TIntPairObjectHashMap<NormalBiome> biomeCache = new TIntPairObjectHashMap<NormalBiome>();
for (int xx = 0; xx < sizeX; xx++) {
for (int zz = 0; zz < sizeZ; zz++) {
float maxSum = 0;
float minSum = 0;
byte count = 0;
for (int sx = -SMOOTH_SIZE; sx <= SMOOTH_SIZE; sx++) {
for (int sz = -SMOOTH_SIZE; sz <= SMOOTH_SIZE; sz++) {
final NormalBiome adjacent;
if (xx + sx < 0 || zz + sz < 0 || xx + sx >= sizeX || zz + sz >= sizeZ) {
if (biomeCache.containsKey(x + xx + sx, z + zz + sz)) {
adjacent = biomeCache.get(x + xx + sx, z + zz + sz);
} else {
adjacent = (NormalBiome) selector.pickBiome(x + xx + sx, y, z + zz + sz, seed);
biomeCache.put(x + xx + sx, z + zz + sz, adjacent);
}
} else {
adjacent = (NormalBiome) biomes.getBiome(xx + sx, y, zz + sz);
}
minSum += adjacent.getMin();
maxSum += adjacent.getMax();
count++;
}
}
final double minElevation = minSum / count;
final double smoothHeight = (maxSum / count - minElevation) / 2d;
for (int yy = 0; yy < sizeY; yy++) {
double noiseValue =
noise[xx][yy][zz] - 1 / smoothHeight * (y + yy - smoothHeight - minElevation);
if (noiseValue >= 0) {
blockData.set(x + xx, y + yy, z + zz, VanillaMaterials.STONE.getId());
} else {
if (y + yy <= SEA_LEVEL) {
if (y + yy == SEA_LEVEL
&& ((NormalBiome) biomes.getBiome(xx, 0, zz)).getClimate() == Climate.COLD) {
blockData.set(x + xx, y + yy, z + zz, VanillaMaterials.ICE.getId());
} else {
blockData.set(x + xx, y + yy, z + zz, VanillaMaterials.WATER.getId());
}
} else {
blockData.set(x + xx, y + yy, z + zz, VanillaMaterials.AIR.getId());
}
}
}
if (y == 0) {
final byte bedrockDepth = (byte) (random.nextInt(BEDROCK_DEPTH) + 1);
for (byte yy = 0; yy < bedrockDepth; yy++) {
blockData.set(x + xx, yy, z + zz, VanillaMaterials.BEDROCK.getId());
}
}
}
}
}