package net.minecraft.src;



import java.util.List;

import java.util.Random;



public class ChunkProviderHell implements IChunkProvider

{

    private Random hellRNG;



    /** A NoiseGeneratorOctaves used in generating nether terrain */

    private NoiseGeneratorOctaves netherNoiseGen1;

    private NoiseGeneratorOctaves netherNoiseGen2;

    private NoiseGeneratorOctaves netherNoiseGen3;



    /** Determines whether slowsand or gravel can be generated at a location */

    private NoiseGeneratorOctaves slowsandGravelNoiseGen;



    /**

     * Determines whether something other than nettherack can be generated at a location

     */

    private NoiseGeneratorOctaves netherrackExculsivityNoiseGen;

    public NoiseGeneratorOctaves netherNoiseGen6;

    public NoiseGeneratorOctaves netherNoiseGen7;



    /** Is the world that the nether is getting generated. */

    private World worldObj;

    private double field_4163_o[];

    public MapGenNetherBridge genNetherBridge;

    private double slowsandNoise[];

    private double gravelNoise[];

    private double netherrackExclusivityNoise[];

    private MapGenBase netherCaveGenerator;

    double noiseData1[];

    double noiseData2[];

    double noiseData3[];

    double noiseData4[];

    double noiseData5[];



    public ChunkProviderHell(World par1World, long par2)

    {

        genNetherBridge = new MapGenNetherBridge();

        slowsandNoise = new double[256];

        gravelNoise = new double[256];

        netherrackExclusivityNoise = new double[256];

        netherCaveGenerator = new MapGenCavesHell();

        worldObj = par1World;

        hellRNG = new Random(par2);

        netherNoiseGen1 = new NoiseGeneratorOctaves(hellRNG, 16);

        netherNoiseGen2 = new NoiseGeneratorOctaves(hellRNG, 16);

        netherNoiseGen3 = new NoiseGeneratorOctaves(hellRNG, 8);

        slowsandGravelNoiseGen = new NoiseGeneratorOctaves(hellRNG, 4);

        netherrackExculsivityNoiseGen = new NoiseGeneratorOctaves(hellRNG, 4);

        netherNoiseGen6 = new NoiseGeneratorOctaves(hellRNG, 10);

        netherNoiseGen7 = new NoiseGeneratorOctaves(hellRNG, 16);

    }



    /**

     * Generates the shape of the terrain in the nether.

     */

    public void generateNetherTerrain(int par1, int par2, byte par3ArrayOfByte[])

    {

        byte byte0 = 4;

        byte byte1 = 32;

        int i = byte0 + 1;

        byte byte2 = 17;

        int j = byte0 + 1;

        field_4163_o = func_4057_a(field_4163_o, par1 * byte0, 0, par2 * byte0, i, byte2, j);



        for (int k = 0; k < byte0; k++)

        {

            for (int l = 0; l < byte0; l++)

            {

                for (int i1 = 0; i1 < 16; i1++)

                {

                    double d = 0.125D;

                    double d1 = field_4163_o[((k + 0) * j + (l + 0)) * byte2 + (i1 + 0)];

                    double d2 = field_4163_o[((k + 0) * j + (l + 1)) * byte2 + (i1 + 0)];

                    double d3 = field_4163_o[((k + 1) * j + (l + 0)) * byte2 + (i1 + 0)];

                    double d4 = field_4163_o[((k + 1) * j + (l + 1)) * byte2 + (i1 + 0)];

                    double d5 = (field_4163_o[((k + 0) * j + (l + 0)) * byte2 + (i1 + 1)] - d1) * d;

                    double d6 = (field_4163_o[((k + 0) * j + (l + 1)) * byte2 + (i1 + 1)] - d2) * d;

                    double d7 = (field_4163_o[((k + 1) * j + (l + 0)) * byte2 + (i1 + 1)] - d3) * d;

                    double d8 = (field_4163_o[((k + 1) * j + (l + 1)) * byte2 + (i1 + 1)] - d4) * d;



                    for (int j1 = 0; j1 < 8; j1++)

                    {

                        double d9 = 0.25D;

                        double d10 = d1;

                        double d11 = d2;

                        double d12 = (d3 - d1) * d9;

                        double d13 = (d4 - d2) * d9;



                        for (int k1 = 0; k1 < 4; k1++)

                        {

                            int l1 = k1 + k * 4 << 11 | 0 + l * 4 << 7 | i1 * 8 + j1;

                            char c = '\200';

                            double d14 = 0.25D;

                            double d15 = d10;

                            double d16 = (d11 - d10) * d14;



                            for (int i2 = 0; i2 < 4; i2++)

                            {

                                int j2 = 0;



                                if (i1 * 8 + j1 < byte1)

                                {

                                    j2 = Block.lavaStill.blockID;

                                }



                                if (d15 > 0.0D)

                                {

                                    j2 = Block.netherrack.blockID;

                                }



                                par3ArrayOfByte[l1] = (byte)j2;

                                l1 += c;

                                d15 += d16;

                            }



                            d10 += d12;

                            d11 += d13;

                        }



                        d1 += d5;

                        d2 += d6;

                        d3 += d7;

                        d4 += d8;

                    }

                }

            }

        }

    }



    public void func_4058_b(int par1, int par2, byte par3ArrayOfByte[])

    {

        byte byte0 = 64;

        double d = 0.03125D;

        slowsandNoise = slowsandGravelNoiseGen.generateNoiseOctaves(slowsandNoise, par1 * 16, par2 * 16, 0, 16, 16, 1, d, d, 1.0D);

        gravelNoise = slowsandGravelNoiseGen.generateNoiseOctaves(gravelNoise, par1 * 16, 109, par2 * 16, 16, 1, 16, d, 1.0D, d);

        netherrackExclusivityNoise = netherrackExculsivityNoiseGen.generateNoiseOctaves(netherrackExclusivityNoise, par1 * 16, par2 * 16, 0, 16, 16, 1, d * 2D, d * 2D, d * 2D);



        for (int i = 0; i < 16; i++)

        {

            for (int j = 0; j < 16; j++)

            {

                boolean flag = slowsandNoise[i + j * 16] + hellRNG.nextDouble() * 0.20000000000000001D > 0.0D;

                boolean flag1 = gravelNoise[i + j * 16] + hellRNG.nextDouble() * 0.20000000000000001D > 0.0D;

                int k = (int)(netherrackExclusivityNoise[i + j * 16] / 3D + 3D + hellRNG.nextDouble() * 0.25D);

                int l = -1;

                byte byte1 = (byte)Block.netherrack.blockID;

                byte byte2 = (byte)Block.netherrack.blockID;



                for (int i1 = 127; i1 >= 0; i1--)

                {

                    int j1 = (j * 16 + i) * 128 + i1;



                    if (i1 >= 127 - hellRNG.nextInt(5))

                    {

                        par3ArrayOfByte[j1] = (byte)Block.bedrock.blockID;

                        continue;

                    }



                    if (i1 <= 0 + hellRNG.nextInt(5))

                    {

                        par3ArrayOfByte[j1] = (byte)Block.bedrock.blockID;

                        continue;

                    }



                    byte byte3 = par3ArrayOfByte[j1];



                    if (byte3 == 0)

                    {

                        l = -1;

                        continue;

                    }



                    if (byte3 != Block.netherrack.blockID)

                    {

                        continue;

                    }



                    if (l == -1)

                    {

                        if (k <= 0)

                        {

                            byte1 = 0;

                            byte2 = (byte)Block.netherrack.blockID;

                        }

                        else if (i1 >= byte0 - 4 && i1 <= byte0 + 1)

                        {

                            byte1 = (byte)Block.netherrack.blockID;

                            byte2 = (byte)Block.netherrack.blockID;



                            if (flag1)

                            {

                                byte1 = (byte)Block.gravel.blockID;

                            }



                            if (flag1)

                            {

                                byte2 = (byte)Block.netherrack.blockID;

                            }



                            if (flag)

                            {

                                byte1 = (byte)Block.slowSand.blockID;

                            }



                            if (flag)

                            {

                                byte2 = (byte)Block.slowSand.blockID;

                            }

                        }



                        if (i1 < byte0 && byte1 == 0)

                        {

                            byte1 = (byte)Block.lavaStill.blockID;

                        }



                        l = k;



                        if (i1 >= byte0 - 1)

                        {

                            par3ArrayOfByte[j1] = byte1;

                        }

                        else

                        {

                            par3ArrayOfByte[j1] = byte2;

                        }



                        continue;

                    }



                    if (l > 0)

                    {

                        l--;

                        par3ArrayOfByte[j1] = byte2;

                    }

                }

            }

        }

    }



    /**

     * loads or generates the chunk at the chunk location specified

     */

    public Chunk loadChunk(int par1, int par2)

    {

        return 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)

    {

        hellRNG.setSeed((long)par1 * 0x4f9939f508L + (long)par2 * 0x1ef1565bd5L);

        byte abyte0[] = new byte[32768];

        generateNetherTerrain(par1, par2, abyte0);

        func_4058_b(par1, par2, abyte0);

        netherCaveGenerator.generate(this, worldObj, par1, par2, abyte0);

        genNetherBridge.generate(this, worldObj, par1, par2, abyte0);

        Chunk chunk = new Chunk(worldObj, abyte0, par1, par2);

        BiomeGenBase abiomegenbase[] = worldObj.getWorldChunkManager().loadBlockGeneratorData(null, par1 * 16, par2 * 16, 16, 16);

        byte abyte1[] = chunk.getBiomeArray();



        for (int i = 0; i < abyte1.length; i++)

        {

            abyte1[i] = (byte)abiomegenbase[i].biomeID;

        }



        chunk.resetRelightChecks();

        return chunk;

    }



    private double[] func_4057_a(double par1ArrayOfDouble[], int par2, int par3, int par4, int par5, int par6, int par7)

    {

        if (par1ArrayOfDouble == null)

        {

            par1ArrayOfDouble = new double[par5 * par6 * par7];

        }



        double d = 684.41200000000003D;

        double d1 = 2053.2359999999999D;

        noiseData4 = netherNoiseGen6.generateNoiseOctaves(noiseData4, par2, par3, par4, par5, 1, par7, 1.0D, 0.0D, 1.0D);

        noiseData5 = netherNoiseGen7.generateNoiseOctaves(noiseData5, par2, par3, par4, par5, 1, par7, 100D, 0.0D, 100D);

        noiseData1 = netherNoiseGen3.generateNoiseOctaves(noiseData1, par2, par3, par4, par5, par6, par7, d / 80D, d1 / 60D, d / 80D);

        noiseData2 = netherNoiseGen1.generateNoiseOctaves(noiseData2, par2, par3, par4, par5, par6, par7, d, d1, d);

        noiseData3 = netherNoiseGen2.generateNoiseOctaves(noiseData3, par2, par3, par4, par5, par6, par7, d, d1, d);

        int i = 0;

        int j = 0;

        double ad[] = new double[par6];



        for (int k = 0; k < par6; k++)

        {

            ad[k] = Math.cos(((double)k * Math.PI * 6D) / (double)par6) * 2D;

            double d2 = k;



            if (k > par6 / 2)

            {

                d2 = par6 - 1 - k;

            }



            if (d2 < 4D)

            {

                d2 = 4D - d2;

                ad[k] -= d2 * d2 * d2 * 10D;

            }

        }



        for (int l = 0; l < par5; l++)

        {

            for (int i1 = 0; i1 < par7; i1++)

            {

                double d3 = (noiseData4[j] + 256D) / 512D;



                if (d3 > 1.0D)

                {

                    d3 = 1.0D;

                }



                double d4 = 0.0D;

                double d5 = noiseData5[j] / 8000D;



                if (d5 < 0.0D)

                {

                    d5 = -d5;

                }



                d5 = d5 * 3D - 3D;



                if (d5 < 0.0D)

                {

                    d5 /= 2D;



                    if (d5 < -1D)

                    {

                        d5 = -1D;

                    }



                    d5 /= 1.3999999999999999D;

                    d5 /= 2D;

                    d3 = 0.0D;

                }

                else

                {

                    if (d5 > 1.0D)

                    {

                        d5 = 1.0D;

                    }



                    d5 /= 6D;

                }



                d3 += 0.5D;

                d5 = (d5 * (double)par6) / 16D;

                j++;



                for (int j1 = 0; j1 < par6; j1++)

                {

                    double d6 = 0.0D;

                    double d7 = ad[j1];

                    double d8 = noiseData2[i] / 512D;

                    double d9 = noiseData3[i] / 512D;

                    double d10 = (noiseData1[i] / 10D + 1.0D) / 2D;



                    if (d10 < 0.0D)

                    {

                        d6 = d8;

                    }

                    else if (d10 > 1.0D)

                    {

                        d6 = d9;

                    }

                    else

                    {

                        d6 = d8 + (d9 - d8) * d10;

                    }



                    d6 -= d7;



                    if (j1 > par6 - 4)

                    {

                        double d11 = (float)(j1 - (par6 - 4)) / 3F;

                        d6 = d6 * (1.0D - d11) + -10D * d11;

                    }



                    if ((double)j1 < d4)

                    {

                        double d12 = (d4 - (double)j1) / 4D;



                        if (d12 < 0.0D)

                        {

                            d12 = 0.0D;

                        }



                        if (d12 > 1.0D)

                        {

                            d12 = 1.0D;

                        }



                        d6 = d6 * (1.0D - d12) + -10D * d12;

                    }



                    par1ArrayOfDouble[i] = d6;

                    i++;

                }

            }

        }



        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 i = par2 * 16;

        int j = par3 * 16;

        genNetherBridge.generateStructuresInChunk(worldObj, hellRNG, par2, par3);



        for (int k = 0; k < 8; k++)

        {

            int i1 = i + hellRNG.nextInt(16) + 8;

            int k2 = hellRNG.nextInt(120) + 4;

            int i4 = j + hellRNG.nextInt(16) + 8;

            (new WorldGenHellLava(Block.lavaMoving.blockID)).generate(worldObj, hellRNG, i1, k2, i4);

        }



        int l = hellRNG.nextInt(hellRNG.nextInt(10) + 1) + 1;



        for (int j1 = 0; j1 < l; j1++)

        {

            int l2 = i + hellRNG.nextInt(16) + 8;

            int j4 = hellRNG.nextInt(120) + 4;

            int k5 = j + hellRNG.nextInt(16) + 8;

            (new WorldGenFire()).generate(worldObj, hellRNG, l2, j4, k5);

        }



        l = hellRNG.nextInt(hellRNG.nextInt(10) + 1);



        for (int k1 = 0; k1 < l; k1++)

        {

            int i3 = i + hellRNG.nextInt(16) + 8;

            int k4 = hellRNG.nextInt(120) + 4;

            int l5 = j + hellRNG.nextInt(16) + 8;

            (new WorldGenGlowStone1()).generate(worldObj, hellRNG, i3, k4, l5);

        }



        for (int l1 = 0; l1 < 10; l1++)

        {

            int j3 = i + hellRNG.nextInt(16) + 8;

            int l4 = hellRNG.nextInt(128);

            int i6 = j + hellRNG.nextInt(16) + 8;

            (new WorldGenGlowStone2()).generate(worldObj, hellRNG, j3, l4, i6);

        }



        if (hellRNG.nextInt(1) == 0)

        {

            int i2 = i + hellRNG.nextInt(16) + 8;

            int k3 = hellRNG.nextInt(128);

            int i5 = j + hellRNG.nextInt(16) + 8;

            (new WorldGenFlowers(Block.mushroomBrown.blockID)).generate(worldObj, hellRNG, i2, k3, i5);

        }



        if (hellRNG.nextInt(1) == 0)

        {

            int j2 = i + hellRNG.nextInt(16) + 8;

            int l3 = hellRNG.nextInt(128);

            int j5 = j + hellRNG.nextInt(16) + 8;

            (new WorldGenFlowers(Block.mushroomRed.blockID)).generate(worldObj, hellRNG, j2, l3, j5);

        }



        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;

    }



    /**

     * Unloads the 100 oldest chunks from memory, due to a bug with chunkSet.add() never being called it thinks the list

     * is always empty and will not remove any chunks.

     */

    public boolean unload100OldestChunks()

    {

        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 "HellRandomLevelSource";

    }



    /**

     * 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)

    {

        if (par1EnumCreatureType == EnumCreatureType.monster && genNetherBridge.func_40483_a(par2, par3, par4))

        {

            return genNetherBridge.getSpawnList();

        }



        BiomeGenBase biomegenbase = worldObj.func_48454_a(par2, par4);



        if (biomegenbase == null)

        {

            return null;

        }

        else

        {

            return 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 i, int j)

    {

        return null;

    }

}