Ender Mod dimension code for multi-biomes

BiomeEnderDecorater

package mods.ender.main.biome;

import static net.minecraftforge.event.terraingen.DecorateBiomeEvent.Decorate.EventType.BIG_SHROOM;
import static net.minecraftforge.event.terraingen.DecorateBiomeEvent.Decorate.EventType.CACTUS;
import static net.minecraftforge.event.terraingen.DecorateBiomeEvent.Decorate.EventType.CLAY;
import static net.minecraftforge.event.terraingen.DecorateBiomeEvent.Decorate.EventType.DEAD_BUSH;
import static net.minecraftforge.event.terraingen.DecorateBiomeEvent.Decorate.EventType.FLOWERS;
import static net.minecraftforge.event.terraingen.DecorateBiomeEvent.Decorate.EventType.GRASS;
import static net.minecraftforge.event.terraingen.DecorateBiomeEvent.Decorate.EventType.LAKE;
import static net.minecraftforge.event.terraingen.DecorateBiomeEvent.Decorate.EventType.LILYPAD;
import static net.minecraftforge.event.terraingen.DecorateBiomeEvent.Decorate.EventType.PUMPKIN;
import static net.minecraftforge.event.terraingen.DecorateBiomeEvent.Decorate.EventType.REED;
import static net.minecraftforge.event.terraingen.DecorateBiomeEvent.Decorate.EventType.SAND;
import static net.minecraftforge.event.terraingen.DecorateBiomeEvent.Decorate.EventType.SAND_PASS2;
import static net.minecraftforge.event.terraingen.DecorateBiomeEvent.Decorate.EventType.SHROOM;
import static net.minecraftforge.event.terraingen.DecorateBiomeEvent.Decorate.EventType.TREE;
import static net.minecraftforge.event.terraingen.OreGenEvent.GenerateMinable.EventType.COAL;
import static net.minecraftforge.event.terraingen.OreGenEvent.GenerateMinable.EventType.DIAMOND;
import static net.minecraftforge.event.terraingen.OreGenEvent.GenerateMinable.EventType.DIRT;
import static net.minecraftforge.event.terraingen.OreGenEvent.GenerateMinable.EventType.GOLD;
import static net.minecraftforge.event.terraingen.OreGenEvent.GenerateMinable.EventType.GRAVEL;
import static net.minecraftforge.event.terraingen.OreGenEvent.GenerateMinable.EventType.IRON;
import static net.minecraftforge.event.terraingen.OreGenEvent.GenerateMinable.EventType.LAPIS;
import static net.minecraftforge.event.terraingen.OreGenEvent.GenerateMinable.EventType.REDSTONE;

import java.util.Random;

import net.minecraft.block.Block;
import net.minecraft.world.World;
import net.minecraft.world.biome.BiomeDecorator;
import net.minecraft.world.biome.BiomeGenBase;
import net.minecraft.world.gen.feature.WorldGenBigMushroom;
import net.minecraft.world.gen.feature.WorldGenCactus;
import net.minecraft.world.gen.feature.WorldGenClay;
import net.minecraft.world.gen.feature.WorldGenDeadBush;
import net.minecraft.world.gen.feature.WorldGenFlowers;
import net.minecraft.world.gen.feature.WorldGenLiquids;
import net.minecraft.world.gen.feature.WorldGenMinable;
import net.minecraft.world.gen.feature.WorldGenPumpkin;
import net.minecraft.world.gen.feature.WorldGenReed;
import net.minecraft.world.gen.feature.WorldGenSand;
import net.minecraft.world.gen.feature.WorldGenWaterlily;
import net.minecraft.world.gen.feature.WorldGenerator;
import net.minecraftforge.common.MinecraftForge;
import net.minecraftforge.event.terraingen.DecorateBiomeEvent;
import net.minecraftforge.event.terraingen.OreGenEvent;
import net.minecraftforge.event.terraingen.TerrainGen;

public class BiomeEnderDecorator extends BiomeDecorator
{
    /** The world the BiomeDecorator is currently decorating */
    public World currentWorld;

    /** The Biome Decorator's random number generator. */
    public Random randomGenerator;

    /** The X-coordinate of the chunk currently being decorated */
    public int chunk_X;

    /** The Z-coordinate of the chunk currently being decorated */
    public int chunk_Z;

    /** The biome generator object. */
    public BiomeGenBase biome;

    /** The clay generator. */
    public WorldGenerator clayGen = new WorldGenClay(4);

    /** The sand generator. */
    public WorldGenerator sandGen;

    /** The gravel generator. */
    public WorldGenerator gravelAsSandGen;

    /** The dirt generator. */
    public WorldGenerator dirtGen;
    public WorldGenerator gravelGen;
    public WorldGenerator coalGen;
    public WorldGenerator ironGen;

    /** Field that holds gold WorldGenMinable */
    public WorldGenerator goldGen;

    /** Field that holds redstone WorldGenMinable */
    public WorldGenerator redstoneGen;

    /** Field that holds diamond WorldGenMinable */
    public WorldGenerator diamondGen;

    /** Field that holds Lapis WorldGenMinable */
    public WorldGenerator lapisGen;

    /** Field that holds one of the plantYellow WorldGenFlowers */
    public WorldGenerator plantYellowGen;

    /** Field that holds one of the plantRed WorldGenFlowers */
    public WorldGenerator plantRedGen;

    /** Field that holds mushroomBrown WorldGenFlowers */
    public WorldGenerator mushroomBrownGen;

    /** Field that holds mushroomRed WorldGenFlowers */
    public WorldGenerator mushroomRedGen;

    /** Field that holds big mushroom generator */
    public WorldGenerator bigMushroomGen;

    /** Field that holds WorldGenReed */
    public WorldGenerator reedGen;

    /** Field that holds WorldGenCactus */
    public WorldGenerator cactusGen;

    /** The water lily generation! */
    public WorldGenerator waterlilyGen;

    /** Amount of waterlilys per chunk. */
    public int waterlilyPerChunk;

    /**
     * The number of trees to attempt to generate per chunk. Up to 10 in forests, none in deserts.
     */
    public int treesPerChunk;

    /**
     * The number of yellow flower patches to generate per chunk. The game generates much less than this number, since
     * it attempts to generate them at a random altitude.
     */
    public int flowersPerChunk;

    /** The amount of tall grass to generate per chunk. */
    public int grassPerChunk;

    /**
     * The number of dead bushes to generate per chunk. Used in deserts and swamps.
     */
    public int deadBushPerChunk;

    /**
     * The number of extra mushroom patches per chunk. It generates 1/4 this number in brown mushroom patches, and 1/8
     * this number in red mushroom patches. These mushrooms go beyond the default base number of mushrooms.
     */
    public int mushroomsPerChunk;

    /**
     * The number of reeds to generate per chunk. Reeds won't generate if the randomly selected placement is unsuitable.
     */
    public int reedsPerChunk;

    /**
     * The number of cactus plants to generate per chunk. Cacti only work on sand.
     */
    public int cactiPerChunk;

    /**
     * The number of sand patches to generate per chunk. Sand patches only generate when part of it is underwater.
     */
    public int sandPerChunk;

    /**
     * The number of sand patches to generate per chunk. Sand patches only generate when part of it is underwater. There
     * appear to be two separate fields for this.
     */
    public int sandPerChunk2;

    /**
     * The number of clay patches to generate per chunk. Only generates when part of it is underwater.
     */
    public int clayPerChunk;

    /** Amount of big mushrooms per chunk */
    public int bigMushroomsPerChunk;

    /** True if decorator should generate surface lava & water */
    public boolean generateLakes;

    public BiomeEnderDecorator(BiomeGenBase par1BiomeGenBase)
    {
    	super (par1BiomeGenBase);
        this.sandGen = new WorldGenSand(7, Block.sand.blockID);
        this.gravelAsSandGen = new WorldGenSand(6, Block.gravel.blockID);
        this.dirtGen = new WorldGenMinable(Block.dirt.blockID, 32);
        this.gravelGen = new WorldGenMinable(Block.gravel.blockID, 32);
        this.coalGen = new WorldGenMinable(Block.oreCoal.blockID, 16);
        this.ironGen = new WorldGenMinable(Block.oreIron.blockID, 8);
        this.goldGen = new WorldGenMinable(Block.oreGold.blockID, 8);
        this.redstoneGen = new WorldGenMinable(Block.oreRedstone.blockID, 7);
        this.diamondGen = new WorldGenMinable(Block.oreDiamond.blockID, 7);
        this.lapisGen = new WorldGenMinable(Block.oreLapis.blockID, 6);
        this.plantYellowGen = new WorldGenFlowers(Block.plantYellow.blockID);
        this.plantRedGen = new WorldGenFlowers(Block.plantRed.blockID);
        this.mushroomBrownGen = new WorldGenFlowers(Block.mushroomBrown.blockID);
        this.mushroomRedGen = new WorldGenFlowers(Block.mushroomRed.blockID);
        this.bigMushroomGen = new WorldGenBigMushroom();
        this.reedGen = new WorldGenReed();
        this.cactusGen = new WorldGenCactus();
        this.waterlilyGen = new WorldGenWaterlily();
        this.flowersPerChunk = 2;
        this.grassPerChunk = 1;
        this.sandPerChunk = 1;
        this.sandPerChunk2 = 3;
        this.clayPerChunk = 1;
        this.generateLakes = true;
        this.biome = par1BiomeGenBase;
    }

    /**
     * Decorates the world. Calls code that was formerly (pre-1.8) in ChunkProviderGenerate.populate
     */
    public void decorate(World par1World, Random par2Random, int par3, int par4)
    {
        if (this.currentWorld != null)
        {
            throw new RuntimeException("Already decorating!!");
        }
        else
        {
            this.currentWorld = par1World;
            this.randomGenerator = par2Random;
            this.chunk_X = par3;
            this.chunk_Z = par4;
            this.decorate();
            this.currentWorld = null;
            this.randomGenerator = null;
        }
    }

    /**
     * The method that does the work of actually decorating chunks
     */
    protected void decorate()
    {
        MinecraftForge.EVENT_BUS.post(new DecorateBiomeEvent.Pre(currentWorld, randomGenerator, chunk_X, chunk_Z));
        
    }
    /**
     * Standard ore generation helper. Generates most ores.
     */
    protected void genStandardOre1(int par1, WorldGenerator par2WorldGenerator, int par3, int par4)
    {
        for (int l = 0; l < par1; ++l)
        {
            int i1 = this.chunk_X + this.randomGenerator.nextInt(16);
            int j1 = this.randomGenerator.nextInt(par4 - par3) + par3;
            int k1 = this.chunk_Z + this.randomGenerator.nextInt(16);
            par2WorldGenerator.generate(this.currentWorld, this.randomGenerator, i1, j1, k1);
        }
    }

    
    /**
     * Standard ore generation helper. Generates Lapis Lazuli.
     */
    protected void genStandardOre2(int par1, WorldGenerator par2WorldGenerator, int par3, int par4)
    {
        for (int l = 0; l < par1; ++l)
        {
            int i1 = this.chunk_X + this.randomGenerator.nextInt(16);
            int j1 = this.randomGenerator.nextInt(par4) + this.randomGenerator.nextInt(par4) + (par3 - par4);
            int k1 = this.chunk_Z + this.randomGenerator.nextInt(16);
            par2WorldGenerator.generate(this.currentWorld, this.randomGenerator, i1, j1, k1);
        }
    }

    /**
     * Generates ores in the current chunk
     */
    protected void generateOres()
    {
        MinecraftForge.ORE_GEN_BUS.post(new OreGenEvent.Pre(currentWorld, randomGenerator, chunk_X, chunk_Z));
        if (TerrainGen.generateOre(currentWorld, randomGenerator, dirtGen, chunk_X, chunk_Z, DIRT))
        this.genStandardOre1(20, this.dirtGen, 0, 128);
        if (TerrainGen.generateOre(currentWorld, randomGenerator, gravelGen, chunk_X, chunk_Z, GRAVEL))
        this.genStandardOre1(10, this.gravelGen, 0, 128);
        if (TerrainGen.generateOre(currentWorld, randomGenerator, coalGen, chunk_X, chunk_Z, COAL))
        this.genStandardOre1(20, this.coalGen, 0, 128);
        if (TerrainGen.generateOre(currentWorld, randomGenerator, ironGen, chunk_X, chunk_Z, IRON))
        this.genStandardOre1(20, this.ironGen, 0, 64);
        if (TerrainGen.generateOre(currentWorld, randomGenerator, goldGen, chunk_X, chunk_Z, GOLD))
        this.genStandardOre1(2, this.goldGen, 0, 32);
        if (TerrainGen.generateOre(currentWorld, randomGenerator, redstoneGen, chunk_X, chunk_Z, REDSTONE))
        this.genStandardOre1(8, this.redstoneGen, 0, 16);
        if (TerrainGen.generateOre(currentWorld, randomGenerator, diamondGen, chunk_X, chunk_Z, DIAMOND))
        this.genStandardOre1(1, this.diamondGen, 0, 16);
        if (TerrainGen.generateOre(currentWorld, randomGenerator, lapisGen, chunk_X, chunk_Z, LAPIS))
        this.genStandardOre2(1, this.lapisGen, 16, 16);
        MinecraftForge.ORE_GEN_BUS.post(new OreGenEvent.Post(currentWorld, randomGenerator, chunk_X, chunk_Z));
    }
}

BiomeGenEndStonePlains

package mods.ender.main.biome;

import java.util.Random;

import net.minecraft.block.Block;
import net.minecraft.entity.monster.EntityEnderman;
import net.minecraft.world.World;
import net.minecraft.world.biome.BiomeGenBase;
import net.minecraft.world.biome.SpawnListEntry;

public class BiomeGenEndStonePlains extends BiomeGenBase {

	public BiomeGenEndStonePlains(int par1) {
		super(par1);
		this.spawnableMonsterList.clear();
		this.spawnableCreatureList.clear();
		this.spawnableWaterCreatureList.clear();
		this.spawnableCaveCreatureList.clear();
		this.spawnableMonsterList.add(new SpawnListEntry(EntityEnderman.class, 10, 4, 4));
		this.topBlock = ((byte)Block.whiteStone.blockID);
		this.fillerBlock = ((byte)Block.whiteStone.blockID);
		this.theBiomeDecorator = new BiomeEnderDecorator(this);
	}
    public int getSkyColorByTemp(float par1)
    {
        return 0;
    }
    

}

ChunkProviderEnder

package mods.ender.main.dimension;

import static net.minecraftforge.event.terraingen.InitMapGenEvent.EventType.CAVE;
import static net.minecraftforge.event.terraingen.InitMapGenEvent.EventType.MINESHAFT;
import static net.minecraftforge.event.terraingen.InitMapGenEvent.EventType.RAVINE;
import static net.minecraftforge.event.terraingen.InitMapGenEvent.EventType.SCATTERED_FEATURE;
import static net.minecraftforge.event.terraingen.InitMapGenEvent.EventType.STRONGHOLD;
import static net.minecraftforge.event.terraingen.InitMapGenEvent.EventType.VILLAGE;
import static net.minecraftforge.event.terraingen.PopulateChunkEvent.Populate.EventType.DUNGEON;
import static net.minecraftforge.event.terraingen.PopulateChunkEvent.Populate.EventType.ICE;
import static net.minecraftforge.event.terraingen.PopulateChunkEvent.Populate.EventType.LAKE;
import static net.minecraftforge.event.terraingen.PopulateChunkEvent.Populate.EventType.LAVA;

import java.util.List;
import java.util.Random;

import net.minecraft.block.Block;
import net.minecraft.block.BlockSand;
import net.minecraft.entity.EnumCreatureType;
import net.minecraft.util.IProgressUpdate;
import net.minecraft.util.MathHelper;
import net.minecraft.world.ChunkPosition;
import net.minecraft.world.SpawnerAnimals;
import net.minecraft.world.World;
import net.minecraft.world.biome.BiomeGenBase;
import net.minecraft.world.chunk.Chunk;
import net.minecraft.world.chunk.IChunkProvider;
import net.minecraft.world.gen.MapGenBase;
import net.minecraft.world.gen.MapGenCaves;
import net.minecraft.world.gen.MapGenRavine;
import net.minecraft.world.gen.NoiseGeneratorOctaves;
import net.minecraft.world.gen.feature.MapGenScatteredFeature;
import net.minecraft.world.gen.feature.WorldGenDungeons;
import net.minecraft.world.gen.feature.WorldGenLakes;
import net.minecraft.world.gen.structure.MapGenMineshaft;
import net.minecraft.world.gen.structure.MapGenStronghold;
import net.minecraft.world.gen.structure.MapGenVillage;
import net.minecraftforge.common.MinecraftForge;
import net.minecraftforge.event.Event.Result;
import net.minecraftforge.event.terraingen.ChunkProviderEvent;
import net.minecraftforge.event.terraingen.PopulateChunkEvent;
import net.minecraftforge.event.terraingen.TerrainGen;

public class ChunkProviderEnder implements IChunkProvider {
/** RNG. */
private Random rand;

/** A NoiseGeneratorOctaves used in generating terrain */
private NoiseGeneratorOctaves noiseGen1;

/** A NoiseGeneratorOctaves used in generating terrain */
private NoiseGeneratorOctaves noiseGen2;

/** A NoiseGeneratorOctaves used in generating terrain */
private NoiseGeneratorOctaves noiseGen3;

/** A NoiseGeneratorOctaves used in generating terrain */
private NoiseGeneratorOctaves noiseGen4;

/** A NoiseGeneratorOctaves used in generating terrain */
public NoiseGeneratorOctaves noiseGen5;

/** A NoiseGeneratorOctaves used in generating terrain */
public NoiseGeneratorOctaves noiseGen6;
public NoiseGeneratorOctaves mobSpawnerNoise;

/** Reference to the World object. */
private World worldObj;

/** are map structures going to be generated (e.g. strongholds) */
private final boolean mapFeaturesEnabled;

/** Holds the overall noise array used in chunk generation */
private double[] noiseArray;
private double[] stoneNoise = new double[256];
private MapGenBase caveGenerator = new MapGenCaves();

/** Holds Stronghold Generator */
private MapGenStronghold strongholdGenerator = new MapGenStronghold();

/** Holds Village Generator */
private MapGenVillage villageGenerator = new MapGenVillage();

/** Holds Mineshaft Generator */
private MapGenMineshaft mineshaftGenerator = new MapGenMineshaft();
private MapGenScatteredFeature scatteredFeatureGenerator = new MapGenScatteredFeature();

/** Holds ravine generator */
private MapGenBase ravineGenerator = new MapGenRavine();

/** The biomes that are used to generate the chunk */
private BiomeGenBase[] biomesForGeneration;

/** A double array that hold terrain noise from noiseGen3 */
double[] noise3;

/** A double array that hold terrain noise */
double[] noise1;

/** A double array that hold terrain noise from noiseGen2 */
double[] noise2;

/** A double array that hold terrain noise from noiseGen5 */
double[] noise5;

/** A double array that holds terrain noise from noiseGen6 */
double[] noise6;

/**
* Used to store the 5x5 parabolic field that is used during terrain
* generation.
*/
float[] parabolicField;
int[][] field_73219_j = new int[32][32];

{
caveGenerator = TerrainGen.getModdedMapGen(caveGenerator, CAVE);
strongholdGenerator = (MapGenStronghold) TerrainGen.getModdedMapGen(strongholdGenerator, STRONGHOLD);
villageGenerator = (MapGenVillage) TerrainGen.getModdedMapGen(villageGenerator, VILLAGE);
mineshaftGenerator = (MapGenMineshaft) TerrainGen.getModdedMapGen(mineshaftGenerator, MINESHAFT);
scatteredFeatureGenerator = (MapGenScatteredFeature) TerrainGen.getModdedMapGen(scatteredFeatureGenerator, SCATTERED_FEATURE);
ravineGenerator = TerrainGen.getModdedMapGen(ravineGenerator, RAVINE);
}

public ChunkProviderEnder(World world, long seed, boolean mapFeaturesEnabled) {
this.worldObj = world;
this.mapFeaturesEnabled = mapFeaturesEnabled;
this.rand = new Random(seed);
this.noiseGen1 = new NoiseGeneratorOctaves(this.rand, 16);
this.noiseGen2 = new NoiseGeneratorOctaves(this.rand, 16);
this.noiseGen3 = new NoiseGeneratorOctaves(this.rand, 8);
this.noiseGen4 = new NoiseGeneratorOctaves(this.rand, 4);
this.noiseGen5 = new NoiseGeneratorOctaves(this.rand, 10);
this.noiseGen6 = new NoiseGeneratorOctaves(this.rand, 16);
this.mobSpawnerNoise = new NoiseGeneratorOctaves(this.rand, 8);

NoiseGeneratorOctaves[] noiseGens = { noiseGen1, noiseGen2, noiseGen3, noiseGen4, noiseGen5, noiseGen6, mobSpawnerNoise };
noiseGens = TerrainGen.getModdedNoiseGenerators(world, this.rand, noiseGens);
this.noiseGen1 = noiseGens[0];
this.noiseGen2 = noiseGens[1];
this.noiseGen3 = noiseGens[2];
this.noiseGen4 = noiseGens[3];
this.noiseGen5 = noiseGens[4];
this.noiseGen6 = noiseGens[5];
this.mobSpawnerNoise = noiseGens[6];
}

/**
* Generates the shape of the terrain for the chunk though its all stone
* though the water is frozen if the temperature is low enough
*/
public void generateTerrain(int par1, int par2, byte[] par3ArrayOfByte) {
byte b0 = 4;
byte b1 = 16;
byte b2 = 63;
int k = b0 + 1;
byte b3 = 17;
int l = b0 + 1;
this.biomesForGeneration = this.worldObj.getWorldChunkManager().getBiomesForGeneration(this.biomesForGeneration, par1 * 4 - 2, par2 * 4 - 2, k + 5, l + 5);
this.noiseArray = this.initializeNoiseField(this.noiseArray, par1 * b0, 0, par2 * b0, k, b3, l);

for (int i1 = 0; i1 < b0; ++i1) {
for (int j1 = 0; j1 < b0; ++j1) {
for (int k1 = 0; k1 < b1; ++k1) {
double d0 = 0.125D;
double d1 = this.noiseArray[((i1 + 0) * l + j1 + 0) * b3 + k1 + 0];
double d2 = this.noiseArray[((i1 + 0) * l + j1 + 1) * b3 + k1 + 0];
double d3 = this.noiseArray[((i1 + 1) * l + j1 + 0) * b3 + k1 + 0];
double d4 = this.noiseArray[((i1 + 1) * l + j1 + 1) * b3 + k1 + 0];
double d5 = (this.noiseArray[((i1 + 0) * l + j1 + 0) * b3 + k1 + 1] - d1) * d0;
double d6 = (this.noiseArray[((i1 + 0) * l + j1 + 1) * b3 + k1 + 1] - d2) * d0;
double d7 = (this.noiseArray[((i1 + 1) * l + j1 + 0) * b3 + k1 + 1] - d3) * d0;
double d8 = (this.noiseArray[((i1 + 1) * l + j1 + 1) * b3 + k1 + 1] - d4) * d0;

for (int l1 = 0; l1 < 8; ++l1) {
double d9 = 0.25D;
double d10 = d1;
double d11 = d2;
double d12 = (d3 - d1) * d9;
double d13 = (d4 - d2) * d9;

for (int i2 = 0; i2 < 4; ++i2) {
int j2 = i2 + i1 * 4 << 11 | 0 + j1 * 4 << 7 | k1 * 8 + l1;
short short1 = 128;
j2 -= short1;
double d14 = 0.25D;
double d15 = (d11 - d10) * d14;
double d16 = d10 - d15;

for (int k2 = 0; k2 < 4; ++k2) {
if ((d16 += d15) > 0.0D) {
par3ArrayOfByte[j2 += short1] = (byte) Block.stone.blockID;//Block.stone.blockID;
} else if (k1 * 8 + l1 < b2) {
par3ArrayOfByte[j2 += short1] = (byte) Block.waterStill.blockID;
} else {
par3ArrayOfByte[j2 += short1] = 0;
}
}

d10 += d12;
d11 += d13;
}

d1 += d5;
d2 += d6;
d3 += d7;
d4 += d8;
}
}
}
}
}

/**
* Replaces the stone that was placed in with blocks that match the biome
*/
public void replaceBlocksForBiome(int par1, int par2, byte[] par3ArrayOfByte, BiomeGenBase[] par4ArrayOfBiomeGenBase) {
ChunkProviderEvent.ReplaceBiomeBlocks event = new ChunkProviderEvent.ReplaceBiomeBlocks(this, par1, par2, par3ArrayOfByte, par4ArrayOfBiomeGenBase);
MinecraftForge.EVENT_BUS.post(event);
if (event.getResult() == Result.DENY)
return;

byte b0 = 63;
double d0 = 0.03125D;
this.stoneNoise = this.noiseGen4.generateNoiseOctaves(this.stoneNoise, par1 * 16, par2 * 16, 0, 16, 16, 1, d0 * 2.0D, d0 * 2.0D, d0 * 2.0D);

for (int k = 0; k < 16; ++k) {
for (int l = 0; l < 16; ++l) {
BiomeGenBase biomegenbase = par4ArrayOfBiomeGenBase[l + k * 16];
float f = biomegenbase.getFloatTemperature();
int i1 = (int) (this.stoneNoise[k + l * 16] / 3.0D + 3.0D + this.rand.nextDouble() * 0.25D);
int j1 = -1;
byte b1 = biomegenbase.topBlock;
byte b2 = biomegenbase.fillerBlock;

for (int k1 = 127; k1 >= 0; --k1) {
int l1 = (l * 16 + k) * 128 + k1;

if (k1 <= 0 + this.rand.nextInt(5)) {
par3ArrayOfByte[l1] = (byte) Block.bedrock.blockID;
} else {
byte b3 = par3ArrayOfByte[l1];

if (b3 == 0) {
j1 = -1;
} else if (b3 == Block.stone.blockID) {
if (j1 == -1) {
if (i1 <= 0) {
b1 = 0;
b2 = (byte) Block.dirt.blockID;//was dirt
} else if (k1 >= b0 - 4 && k1 <= b0 + 1) {
b1 = biomegenbase.topBlock;
b2 = biomegenbase.fillerBlock;
}

if (k1 < b0 && b1 == 0) {
if (f < 0.15F) {
b1 = (byte) Block.ice.blockID;
} else {
b1 = (byte) Block.waterStill.blockID;
}
}

j1 = i1;

if (k1 >= b0 - 1) {
par3ArrayOfByte[l1] = b1;
} else {
par3ArrayOfByte[l1] = b2;
}
} else if (j1 > 0) {
--j1;
par3ArrayOfByte[l1] = b2;

if (j1 == 0 && b2 == Block.sand.blockID) {
j1 = this.rand.nextInt(4);
b2 = (byte) Block.sandStone.blockID;
}
}
}
}
}
}
}
}

/**
* loads or generates the chunk at the chunk location specified
*/
public Chunk loadChunk(int par1, int par2) {
return this.provideChunk(par1, par2);
}

/**
* Will return back a chunk, if it doesn't exist and its not a MP client it
* will generates all the blocks for the specified chunk from the map seed
* and chunk seed
*/
public Chunk provideChunk(int par1, int par2) {
this.rand.setSeed((long) par1 * 341873128712L + (long) par2 * 132897987541L);
byte[] abyte = new byte[32768];
this.generateTerrain(par1, par2, abyte);
this.biomesForGeneration = this.worldObj.getWorldChunkManager().loadBlockGeneratorData(this.biomesForGeneration, par1 * 16, par2 * 16, 16, 16);
this.replaceBlocksForBiome(par1, par2, abyte, this.biomesForGeneration);
this.caveGenerator.generate(this, this.worldObj, par1, par2, abyte);
this.ravineGenerator.generate(this, this.worldObj, par1, par2, abyte);

if (this.mapFeaturesEnabled) {
this.mineshaftGenerator.generate(this, this.worldObj, par1, par2, abyte);
this.villageGenerator.generate(this, this.worldObj, par1, par2, abyte);
this.strongholdGenerator.generate(this, this.worldObj, par1, par2, abyte);
this.scatteredFeatureGenerator.generate(this, this.worldObj, par1, par2, abyte);
}

Chunk chunk = new Chunk(this.worldObj, abyte, par1, par2);
byte[] abyte1 = chunk.getBiomeArray();

for (int k = 0; k < abyte1.length; ++k) {
abyte1[k] = (byte) this.biomesForGeneration[k].biomeID;
}

chunk.generateSkylightMap();
return chunk;
}

/**
* generates a subset of the level's terrain data. Takes 7 arguments: the
* [empty] noise array, the position, and the size.
*/
private double[] initializeNoiseField(double[] par1ArrayOfDouble, int par2, int par3, int par4, int par5, int par6, int par7) {
ChunkProviderEvent.InitNoiseField event = new ChunkProviderEvent.InitNoiseField(this, par1ArrayOfDouble, par2, par3, par4, par5, par6, par7);
MinecraftForge.EVENT_BUS.post(event);
if (event.getResult() == Result.DENY)
return event.noisefield;

if (par1ArrayOfDouble == null) {
par1ArrayOfDouble = new double[par5 * par6 * par7];
}

if (this.parabolicField == null) {
this.parabolicField = new float[25];

for (int k1 = -2; k1 <= 2; ++k1) {
for (int l1 = -2; l1 <= 2; ++l1) {
float f = 10.0F / MathHelper.sqrt_float((float) (k1 * k1 + l1 * l1) + 0.2F);
this.parabolicField[k1 + 2 + (l1 + 2) * 5] = f;
}
}
}

double d0 = 684.412D;
double d1 = 684.412D;
this.noise5 = this.noiseGen5.generateNoiseOctaves(this.noise5, par2, par4, par5, par7, 1.121D, 1.121D, 0.5D);
this.noise6 = this.noiseGen6.generateNoiseOctaves(this.noise6, par2, par4, par5, par7, 200.0D, 200.0D, 0.5D);
this.noise3 = this.noiseGen3.generateNoiseOctaves(this.noise3, par2, par3, par4, par5, par6, par7, d0 / 80.0D, d1 / 160.0D, d0 / 80.0D);
this.noise1 = this.noiseGen1.generateNoiseOctaves(this.noise1, par2, par3, par4, par5, par6, par7, d0, d1, d0);
this.noise2 = this.noiseGen2.generateNoiseOctaves(this.noise2, par2, par3, par4, par5, par6, par7, d0, d1, d0);
boolean flag = false;
boolean flag1 = false;
int i2 = 0;
int j2 = 0;

for (int k2 = 0; k2 < par5; ++k2) {
for (int l2 = 0; l2 < par7; ++l2) {
float f1 = 0.0F;
float f2 = 0.0F;
float f3 = 0.0F;
byte b0 = 2;
BiomeGenBase biomegenbase = this.biomesForGeneration[k2 + 2 + (l2 + 2) * (par5 + 5)];

for (int i3 = -b0; i3 <= b0; ++i3) {
for (int j3 = -b0; j3 <= b0; ++j3) {
BiomeGenBase biomegenbase1 = this.biomesForGeneration[k2 + i3 + 2 + (l2 + j3 + 2) * (par5 + 5)];
float f4 = this.parabolicField[i3 + 2 + (j3 + 2) * 5] / (biomegenbase1.minHeight + 2.0F);

if (biomegenbase1.minHeight > biomegenbase.minHeight) {
f4 /= 2.0F;
}

f1 += biomegenbase1.maxHeight * f4;
f2 += biomegenbase1.minHeight * f4;
f3 += f4;
}
}

f1 /= f3;
f2 /= f3;
f1 = f1 * 0.9F + 0.1F;
f2 = (f2 * 4.0F - 1.0F) / 8.0F;
double d2 = this.noise6[j2] / 8000.0D;

if (d2 < 0.0D) {
d2 = -d2 * 0.3D;
}

d2 = d2 * 3.0D - 2.0D;

if (d2 < 0.0D) {
d2 /= 2.0D;

if (d2 < -1.0D) {
d2 = -1.0D;
}

d2 /= 1.4D;
d2 /= 2.0D;
} else {
if (d2 > 1.0D) {
d2 = 1.0D;
}

d2 /= 8.0D;
}

++j2;

for (int k3 = 0; k3 < par6; ++k3) {
double d3 = (double) f2;
double d4 = (double) f1;
d3 += d2 * 0.2D;
d3 = d3 * (double) par6 / 16.0D;
double d5 = (double) par6 / 2.0D + d3 * 4.0D;
double d6 = 0.0D;
double d7 = ((double) k3 - d5) * 12.0D * 128.0D / 128.0D / d4;

if (d7 < 0.0D) {
d7 *= 4.0D;
}

double d8 = this.noise1[i2] / 512.0D;
double d9 = this.noise2[i2] / 512.0D;
double d10 = (this.noise3[i2] / 10.0D + 1.0D) / 2.0D;

if (d10 < 0.0D) {
d6 = d8;
} else if (d10 > 1.0D) {
d6 = d9;
} else {
d6 = d8 + (d9 - d8) * d10;
}

d6 -= d7;

if (k3 > par6 - 4) {
double d11 = (double) ((float) (k3 - (par6 - 4)) / 3.0F);
d6 = d6 * (1.0D - d11) + -10.0D * d11;
}

par1ArrayOfDouble[i2] = d6;
++i2;
}
}
}

return par1ArrayOfDouble;
}

/**
* Checks to see if a chunk exists at x, y
*/
public boolean chunkExists(int par1, int par2) {
return true;
}

/**
* Populates chunk with ores etc etc
*/
public void populate(IChunkProvider par1IChunkProvider, int par2, int par3) {
BlockSand.fallInstantly = true;
int k = par2 * 16;
int l = par3 * 16;
BiomeGenBase biomegenbase = this.worldObj.getBiomeGenForCoords(k + 16, l + 16);
this.rand.setSeed(this.worldObj.getSeed());
long i1 = this.rand.nextLong() / 2L * 2L + 1L;
long j1 = this.rand.nextLong() / 2L * 2L + 1L;
this.rand.setSeed((long) par2 * i1 + (long) par3 * j1 ^ this.worldObj.getSeed());
boolean flag = false;

MinecraftForge.EVENT_BUS.post(new PopulateChunkEvent.Pre(par1IChunkProvider, worldObj, rand, par2, par3, flag));

if (this.mapFeaturesEnabled) {
this.mineshaftGenerator.generateStructuresInChunk(this.worldObj, this.rand, par2, par3);
flag = this.villageGenerator.generateStructuresInChunk(this.worldObj, this.rand, par2, par3);
this.strongholdGenerator.generateStructuresInChunk(this.worldObj, this.rand, par2, par3);
this.scatteredFeatureGenerator.generateStructuresInChunk(this.worldObj, this.rand, par2, par3);
}

int k1;
int l1;
int i2;

if (TerrainGen.populate(par1IChunkProvider, worldObj, rand, par2, par3, flag, LAKE) && !flag && this.rand.nextInt(4) == 0) {
k1 = k + this.rand.nextInt(16) + 8;
l1 = this.rand.nextInt(128);
i2 = l + this.rand.nextInt(16) + 8;
(new WorldGenLakes(Block.waterStill.blockID)).generate(this.worldObj, this.rand, k1, l1, i2);
}

if (TerrainGen.populate(par1IChunkProvider, worldObj, rand, par2, par3, flag, LAVA) && !flag && this.rand.nextInt(8) == 0) {
k1 = k + this.rand.nextInt(16) + 8;
l1 = this.rand.nextInt(this.rand.nextInt(120) + 8);
i2 = l + this.rand.nextInt(16) + 8;

if (l1 < 63 || this.rand.nextInt(10) == 0) {
(new WorldGenLakes(Block.lavaStill.blockID)).generate(this.worldObj, this.rand, k1, l1, i2);
}
}

boolean doGen = TerrainGen.populate(par1IChunkProvider, worldObj, rand, par2, par3, flag, DUNGEON);
for (k1 = 0; doGen && k1 < 8; ++k1) {
l1 = k + this.rand.nextInt(16) + 8;
i2 = this.rand.nextInt(128);
int j2 = l + this.rand.nextInt(16) + 8;

if ((new WorldGenDungeons()).generate(this.worldObj, this.rand, l1, i2, j2)) {
;
}
}

MinecraftForge.EVENT_BUS.post(new PopulateChunkEvent.Post(par1IChunkProvider, worldObj, rand, par2, par3, flag));

BlockSand.fallInstantly = false;
}

/**
* Two modes of operation: if passed true, save all Chunks in one go. If
* passed false, save up to two chunks. Return true if all chunks have been
* saved.
*/
public boolean saveChunks(boolean par1, IProgressUpdate par2IProgressUpdate) {
return true;
}

public void func_104112_b() {
}

/**
* Unloads chunks that are marked to be unloaded. This is not guaranteed to
* unload every such chunk.
*/
public boolean unloadQueuedChunks() {
return false;
}

/**
* Returns if the IChunkProvider supports saving.
*/
public boolean canSave() {
return true;
}

/**
* Converts the instance data to a readable string.
*/
public String makeString() {
return "RandomLevelSource";
}

/**
* Returns a list of creatures of the specified type that can spawn at the
* given location.
*/
public List getPossibleCreatures(EnumCreatureType par1EnumCreatureType, int par2, int par3, int par4) {
BiomeGenBase biomegenbase = this.worldObj.getBiomeGenForCoords(par2, par4);
return biomegenbase == null ? null : (biomegenbase == BiomeGenBase.swampland && par1EnumCreatureType == EnumCreatureType.monster && this.scatteredFeatureGenerator.hasStructureAt(par2, par3, par4) ? this.scatteredFeatureGenerator.getScatteredFeatureSpawnList() : biomegenbase.getSpawnableList(par1EnumCreatureType));
}

/**
* Returns the location of the closest structure of the specified type. If
* not found returns null.
*/
public ChunkPosition findClosestStructure(World par1World, String par2Str, int par3, int par4, int par5) {
return "Stronghold".equals(par2Str) && this.strongholdGenerator != null ? this.strongholdGenerator.getNearestInstance(par1World, par3, par4, par5) : null;
}

public int getLoadedChunkCount() {
return 0;
}

public void recreateStructures(int par1, int par2) {
if (this.mapFeaturesEnabled) {
this.mineshaftGenerator.generate(this, this.worldObj, par1, par2, (byte[]) null);
this.villageGenerator.generate(this, this.worldObj, par1, par2, (byte[]) null);
this.strongholdGenerator.generate(this, this.worldObj, par1, par2, (byte[]) null);
this.scatteredFeatureGenerator.generate(this, this.worldObj, par1, par2, (byte[]) null);
}
}

@Override
public void saveExtraData() {
	// TODO Auto-generated method stub
	
}
}

GenLayerBiomesEnder

package mods.ender.main.dimension;

import mods.ender.main.Ender;
import net.minecraft.world.biome.BiomeGenBase;
import net.minecraft.world.gen.layer.GenLayer;
import net.minecraft.world.gen.layer.IntCache;

public class GenLayerBiomesEnder extends GenLayer {

	protected BiomeGenBase[] allowedBiomes = {Ender.endStonePlains};

	public GenLayerBiomesEnder(long seed, GenLayer genlayer) {
		super(seed);
		this.parent = genlayer;
	}

	public GenLayerBiomesEnder(long seed) {
		super(seed);
	}

	@Override
	public int[] getInts(int x, int z, int width, int depth)
	{
		int[] dest = IntCache.getIntCache(width*depth);

		for (int dz=0; dz<depth; dz++)
		{
			for (int dx=0; dx<width; dx++)
			{
				this.initChunkSeed(dx+x, dz+z);
				dest[(dx+dz*width)] = this.allowedBiomes[nextInt(this.allowedBiomes.length)].biomeID;
			}
		}
		return dest;
	}
}

GenLayerEnder

package mods.ender.main.dimension;

import net.minecraft.world.WorldType;
import net.minecraft.world.gen.layer.GenLayer;
import net.minecraft.world.gen.layer.GenLayerAddIsland;
import net.minecraft.world.gen.layer.GenLayerAddMushroomIsland;
import net.minecraft.world.gen.layer.GenLayerAddSnow;
import net.minecraft.world.gen.layer.GenLayerBiome;
import net.minecraft.world.gen.layer.GenLayerFuzzyZoom;
import net.minecraft.world.gen.layer.GenLayerHills;
import net.minecraft.world.gen.layer.GenLayerIsland;
import net.minecraft.world.gen.layer.GenLayerRiver;
import net.minecraft.world.gen.layer.GenLayerRiverInit;
import net.minecraft.world.gen.layer.GenLayerRiverMix;
import net.minecraft.world.gen.layer.GenLayerShore;
import net.minecraft.world.gen.layer.GenLayerSmooth;
import net.minecraft.world.gen.layer.GenLayerSwampRivers;
import net.minecraft.world.gen.layer.GenLayerVoronoiZoom;
import net.minecraft.world.gen.layer.GenLayerZoom;
import net.minecraftforge.common.MinecraftForge;
import net.minecraftforge.event.terraingen.WorldTypeEvent;

public abstract class GenLayerEnder extends GenLayer
{
public GenLayerEnder(long seed) {
super(seed);
}

public static GenLayer[] makeTheWorld(long seed) {

GenLayer biomes = new GenLayerBiomesEnder(1L);

// more GenLayerZoom = bigger biomes
biomes = new GenLayerZoom(1000L, biomes);
biomes = new GenLayerZoom(1001L, biomes);
biomes = new GenLayerZoom(1002L, biomes);
biomes = new GenLayerZoom(1003L, biomes);
biomes = new GenLayerZoom(1004L, biomes);
biomes = new GenLayerZoom(1005L, biomes);




GenLayer genlayervoronoizoom = new GenLayerVoronoiZoom(10L, biomes);

biomes.initWorldGenSeed(seed);
genlayervoronoizoom.initWorldGenSeed(seed);

return new GenLayer[] {biomes, genlayervoronoizoom};
}
}

WorldChunkManagerEnder

package mods.ender.main.dimension;

import java.util.ArrayList;
import java.util.List;
import java.util.Random;

import mods.ender.main.Ender;
import net.minecraft.world.ChunkPosition;
import net.minecraft.world.World;
import net.minecraft.world.WorldType;
import net.minecraft.world.biome.BiomeCache;
import net.minecraft.world.biome.BiomeGenBase;
import net.minecraft.world.biome.WorldChunkManager;
import net.minecraft.world.gen.layer.GenLayer;
import net.minecraft.world.gen.layer.IntCache;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;

public class WorldChunkManagerEnder extends WorldChunkManager
{
private GenLayer myGenBiomes;
private GenLayer myBiomeIndexLayer;
private BiomeCache myBiomeCache;
private List<BiomeGenBase> myBiomesToSpawnIn;

protected WorldChunkManagerEnder()
{
this.myBiomeCache = new BiomeCache(this);
this.myBiomesToSpawnIn = new ArrayList<BiomeGenBase>();
this.myBiomesToSpawnIn.add(Ender.endStonePlains);
}

public WorldChunkManagerEnder(long seed, WorldType worldtype)
{
this();
GenLayer[] agenlayer = GenLayerEnder.makeTheWorld(seed);
agenlayer = getModdedBiomeGenerators(worldtype, seed, agenlayer);
this.myGenBiomes = agenlayer[0];
this.myBiomeIndexLayer = agenlayer[1];
}

public WorldChunkManagerEnder(World world)
{
this(world.getSeed(), world.provider.terrainType);
}

/**
* Gets the list of valid biomes for the player to spawn in.
*/
public List<BiomeGenBase> getBiomesToSpawnIn()
{
return this.myBiomesToSpawnIn;
}

/**
* Returns the BiomeGenBase related to the x, z position on the world.
*/
public BiomeGenBase getBiomeGenAt(int x, int z)
{
BiomeGenBase biome = this.myBiomeCache.getBiomeGenAt(x, z);
if (biome == null)
{
return Ender.endStonePlains;
}

return biome;
}

/**
* Returns a list of rainfall values for the specified blocks. Args:
* listToReuse, x, z, width, length.
*/
public float[] getRainfall(float[] par1ArrayOfFloat, int par2, int par3, int par4, int par5)
{
IntCache.resetIntCache();

if (par1ArrayOfFloat == null || par1ArrayOfFloat.length < par4 * par5)
{
par1ArrayOfFloat = new float[par4 * par5];
}

int[] aint = this.myBiomeIndexLayer.getInts(par2, par3, par4, par5);

for (int i1 = 0; i1 < par4 * par5; ++i1)
{
float f = (float) BiomeGenBase.biomeList[aint[i1]].getIntRainfall() / 65536.0F;

if (f > 1.0F) {
f = 1.0F;
}

par1ArrayOfFloat[i1] = f;
}

return par1ArrayOfFloat;
}

/**
* Return an adjusted version of a given temperature based on the y height
*/
@SideOnly(Side.CLIENT)
public float getTemperatureAtHeight(float par1, int par2)
{
return par1;
}

/**
* Returns a list of temperatures to use for the specified blocks. Args:
* listToReuse, x, y, width, length
*/
public float[] getTemperatures(float[] par1ArrayOfFloat, int par2, int par3, int par4, int par5)
{
IntCache.resetIntCache();

if (par1ArrayOfFloat == null || par1ArrayOfFloat.length < par4 * par5)
{
par1ArrayOfFloat = new float[par4 * par5];
}

int[] aint = this.myBiomeIndexLayer.getInts(par2, par3, par4, par5);

for (int i1 = 0; i1 < par4 * par5; ++i1)
{
float f = (float) BiomeGenBase.biomeList[aint[i1]].getIntTemperature() / 65536.0F;

if (f > 1.0F) {
f = 1.0F;
}

par1ArrayOfFloat[i1] = f;
}

return par1ArrayOfFloat;
}

/**
* Returns an array of biomes for the location input.
*/
public BiomeGenBase[] getBiomesForGeneration(BiomeGenBase[] par1ArrayOfBiomeGenBase, int par2, int par3, int par4, int par5) {
IntCache.resetIntCache();

if (par1ArrayOfBiomeGenBase == null || par1ArrayOfBiomeGenBase.length < par4 * par5) {
par1ArrayOfBiomeGenBase = new BiomeGenBase[par4 * par5];
}

int[] aint = this.myGenBiomes.getInts(par2, par3, par4, par5);

for (int i = 0; i < par4 * par5; ++i) {
if (aint[i] >= 0) {
par1ArrayOfBiomeGenBase[i] = BiomeGenBase.biomeList[aint[i]];
} else {
//Change this to a biome
par1ArrayOfBiomeGenBase[i] = Ender.endStonePlains;
}
}

return par1ArrayOfBiomeGenBase;
}

/**
* Returns biomes to use for the blocks and loads the other data like
* temperature and humidity onto the WorldChunkManager Args: oldBiomeList,
* x, z, width, depth
*/
public BiomeGenBase[] loadBlockGeneratorData(BiomeGenBase[] par1ArrayOfBiomeGenBase, int par2, int par3, int par4, int par5) {
return this.getBiomeGenAt(par1ArrayOfBiomeGenBase, par2, par3, par4, par5, true);
}

/**
* Return a list of biomes for the specified blocks. Args: listToReuse, x,
* y, width, length, cacheFlag (if false, don't check biomeCache to avoid
* infinite loop in BiomeCacheBlock)
*/
public BiomeGenBase[] getBiomeGenAt(BiomeGenBase[] par1ArrayOfBiomeGenBase, int x, int y, int width, int length, boolean cacheFlag) {
IntCache.resetIntCache();

if (par1ArrayOfBiomeGenBase == null || par1ArrayOfBiomeGenBase.length < width * length) {
par1ArrayOfBiomeGenBase = new BiomeGenBase[width * length];
}

if (cacheFlag && width == 16 && length == 16 && (x & 15) == 0 && (y & 15) == 0) {
BiomeGenBase[] abiomegenbase1 = this.myBiomeCache.getCachedBiomes(x, y);
System.arraycopy(abiomegenbase1, 0, par1ArrayOfBiomeGenBase, 0, width * length);
return par1ArrayOfBiomeGenBase;
} else {
int[] aint = this.myBiomeIndexLayer.getInts(x, y, width, length);

for (int i = 0; i < width * length; ++i) {
if (aint[i] >= 0) {
par1ArrayOfBiomeGenBase[i] = BiomeGenBase.biomeList[aint[i]];
} else {
//Change this to a biome
par1ArrayOfBiomeGenBase[i] = Ender.endStonePlains;
}
}

return par1ArrayOfBiomeGenBase;
}
}

/**
* checks given Chunk's Biomes against List of allowed ones
*/
public boolean areBiomesViable(int par1, int par2, int par3, List par4List) {
IntCache.resetIntCache();
int l = par1 - par3 >> 2;
int i1 = par2 - par3 >> 2;
int j1 = par1 + par3 >> 2;
int k1 = par2 + par3 >> 2;
int l1 = j1 - l + 1;
int i2 = k1 - i1 + 1;
int[] aint = this.myGenBiomes.getInts(l, i1, l1, i2);

for (int j2 = 0; j2 < l1 * i2; ++j2) {
BiomeGenBase biomegenbase = BiomeGenBase.biomeList[aint[j2]];

if (!par4List.contains(biomegenbase)) {
return false;
}
}

return true;
}

/**
* Finds a valid position within a range, that is in one of the listed
* biomes. Searches {par1,par2} +-par3 blocks. Strongly favors positive y
* positions.
*/
public ChunkPosition findBiomePosition(int par1, int par2, int par3, List par4List, Random par5Random) {
IntCache.resetIntCache();
int l = par1 - par3 >> 2;
int i1 = par2 - par3 >> 2;
int j1 = par1 + par3 >> 2;
int k1 = par2 + par3 >> 2;
int l1 = j1 - l + 1;
int i2 = k1 - i1 + 1;
int[] aint = this.myGenBiomes.getInts(l, i1, l1, i2);
ChunkPosition chunkposition = null;
int j2 = 0;

for (int k2 = 0; k2 < l1 * i2; ++k2) {
int l2 = l + k2 % l1 << 2;
int i3 = i1 + k2 / l1 << 2;
BiomeGenBase biomegenbase = BiomeGenBase.biomeList[aint[k2]];

if (par4List.contains(biomegenbase) && (chunkposition == null || par5Random.nextInt(j2 + 1) == 0)) {
chunkposition = new ChunkPosition(l2, 0, i3);
++j2;
}
}

return chunkposition;
}

/**
* Calls the WorldChunkManager's biomeCache.cleanupCache()
*/
public void cleanupCache()
{
this.myBiomeCache.cleanupCache();
}
}

WorldProviderEnder

package mods.ender.main.dimension;

import mods.ender.main.Ender;
import net.minecraft.world.WorldProvider;
import net.minecraft.world.biome.BiomeGenBase;
import net.minecraft.world.biome.WorldChunkManagerHell;
import net.minecraft.world.chunk.IChunkProvider;

public class WorldProviderEnder extends WorldProvider {

	public void registerWorldChunkManager()
	{
	       this.worldChunkMgr = new WorldChunkManagerEnder();
	       this.dimensionId = Ender.dimensionId;
	}
	
	
    public IChunkProvider createChunkGenerator()
    {
           return new ChunkProviderEnder(worldObj, worldObj.getSeed(), true);
    }
    
	@Override
	public String getDimensionName() {
		return "The Ender";
	}
}