package net.glowstone.generator.ground;
import net.glowstone.util.noise.SimplexOctaveGenerator;
import org.bukkit.Material;
import org.bukkit.World;
import org.bukkit.block.Biome;
import org.bukkit.generator.ChunkGenerator.ChunkData;
import org.bukkit.material.MaterialData;
import java.util.Arrays;
import java.util.Random;
public class MesaGroundGenerator extends GroundGenerator {
protected static final MaterialData RED_SAND = new MaterialData(Material.SAND, (byte) 1);
protected static final MaterialData ORANGE_STAINED_CLAY = new MaterialData(Material.STAINED_CLAY, (byte) 1);
private final MesaType type;
private final int[] colorLayer = new int[64];
private MaterialData topMaterial;
private MaterialData groundMaterial;
private SimplexOctaveGenerator colorNoise;
private SimplexOctaveGenerator canyonHeightNoise;
private SimplexOctaveGenerator canyonScaleNoise;
private long seed;
public MesaGroundGenerator() {
this(MesaType.NORMAL);
}
public MesaGroundGenerator(MesaType type) {
this.type = type;
topMaterial = RED_SAND;
groundMaterial = ORANGE_STAINED_CLAY;
}
private void initialize(long seed) {
if (seed != this.seed || colorNoise == null || canyonScaleNoise == null || canyonHeightNoise == null) {
Random random = new Random(seed);
colorNoise = new SimplexOctaveGenerator(random, 1);
colorNoise.setScale(1 / 512.0D);
initializeColorLayers(random);
canyonHeightNoise = new SimplexOctaveGenerator(random, 4);
canyonHeightNoise.setScale(1 / 4.0D);
canyonScaleNoise = new SimplexOctaveGenerator(random, 1);
canyonScaleNoise.setScale(1 / 512.0D);
this.seed = seed;
}
}
@Override
public void generateTerrainColumn(ChunkData chunkData, World world, Random random, int x, int z, Biome biome, double surfaceNoise) {
initialize(world.getSeed());
int seaLevel = world.getSeaLevel();
MaterialData topMat = topMaterial;
MaterialData groundMat = groundMaterial;
int surfaceHeight = Math.max((int) (surfaceNoise / 3.0D + 3.0D + random.nextDouble() * 0.25D), 1);
boolean colored = Math.cos(surfaceNoise / 3.0D * Math.PI) <= 0;
double bryceCanyonHeight = 0;
if (type == MesaType.BRYCE) {
int nX = (x & 0xFFFFFFF0) + (z & 0xF);
int nZ = (z & 0xFFFFFFF0) + (x & 0xF);
double noiseCanyonHeight = Math.min(Math.abs(surfaceNoise), canyonHeightNoise.noise(nX, nZ, 0.5D, 2.0D));
if (noiseCanyonHeight > 0) {
double heightScale = Math.abs(canyonScaleNoise.noise(nX, nZ, 0.5D, 2.0D));
bryceCanyonHeight = Math.pow(noiseCanyonHeight, 2) * 2.5D;
double maxHeight = Math.ceil(50 * heightScale) + 14;
if (bryceCanyonHeight > maxHeight) {
bryceCanyonHeight = maxHeight;
}
bryceCanyonHeight += seaLevel;
}
}
int chunkX = x;
x &= 0xF;
z &= 0xF;
int deep = -1;
boolean groundSet = false;
for (int y = 255; y >= 0; y--) {
if (y < (int) bryceCanyonHeight && chunkData.getType(x, y, z) == Material.AIR) {
chunkData.setBlock(x, y, z, Material.STONE);
}
if (y <= random.nextInt(5)) {
chunkData.setBlock(x, y, z, Material.BEDROCK);
} else {
Material mat = chunkData.getType(x, y, z);
if (mat == Material.AIR) {
deep = -1;
} else if (mat == Material.STONE) {
if (deep == -1) {
groundSet = false;
if (y >= seaLevel - 5 && y <= seaLevel) {
groundMat = groundMaterial;
}
deep = surfaceHeight + Math.max(0, y - seaLevel - 1);
if (y >= seaLevel - 2) {
if (type == MesaType.FOREST && y > seaLevel + 22 + surfaceHeight * 2) {
topMat = colored ? GRASS : COARSE_DIRT;
chunkData.setBlock(x, y, z, topMat);
} else if (y > seaLevel + 2 + surfaceHeight) {
int color = colorLayer[(y + (int) Math.round(colorNoise.noise(chunkX, chunkX, 0.5D, 2.0D) * 2.0D)) % colorLayer.length];
setColoredGroundLayer(chunkData, x, y, z, y < seaLevel || y > 128 ? 1 : colored ? color : -1);
} else {
chunkData.setBlock(x, y, z, topMaterial);
groundSet = true;
}
} else {
chunkData.setBlock(x, y, z, groundMat);
}
} else if (deep > 0) {
deep--;
if (groundSet) {
chunkData.setBlock(x, y, z, groundMaterial);
} else {
int color = colorLayer[(y + (int) Math.round(colorNoise.noise(chunkX, chunkX, 0.5D, 2.0D) * 2.0D)) % colorLayer.length];
setColoredGroundLayer(chunkData, x, y, z, color);
}
}
}
}
}
}
private void setColoredGroundLayer(ChunkData chunkData, int x, int y, int z, int color) {
if (color >= 0) {
chunkData.setBlock(x, y, z, new MaterialData(Material.STAINED_CLAY, (byte) color));
} else {
chunkData.setBlock(x, y, z, Material.HARD_CLAY);
}
}
private void setRandomLayerColor(Random random, int minLayerCount, int minLayerHeight, int color) {
for (int i = 0; i < random.nextInt(4) + minLayerCount; i++) {
int j = random.nextInt(colorLayer.length);
int k = 0;
while (k < random.nextInt(3) + minLayerHeight && j < colorLayer.length) {
colorLayer[j++] = color;
k++;
}
}
}
private void initializeColorLayers(Random random) {
Arrays.fill(colorLayer, -1); // hard clay, other values are stained clay
int i = 0;
while (i < colorLayer.length) {
i += random.nextInt(5) + 1;
if (i < colorLayer.length) {
colorLayer[i++] = 1; // orange
}
}
setRandomLayerColor(random, 2, 1, 4); // yellow
setRandomLayerColor(random, 2, 2, 12); // brown
setRandomLayerColor(random, 2, 1, 14); // red
int j = 0;
for (i = 0; i < random.nextInt(3) + 3; i++) {
j += random.nextInt(16) + 4;
if (j >= colorLayer.length) {
break;
}
if (random.nextInt(2) == 0 || j < colorLayer.length - 1 && random.nextInt(2) == 0) {
colorLayer[j - 1] = 8; // light gray
} else {
colorLayer[j] = 0; // white
}
}
}
public enum MesaType {
NORMAL,
BRYCE,
FOREST
}
}