package gtPlusPlus.everglades.chunk;

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

import net.minecraft.block.Block;
import net.minecraft.block.BlockFalling;
import net.minecraft.entity.EnumCreatureType;
import net.minecraft.init.Blocks;
import net.minecraft.util.IProgressUpdate;
import net.minecraft.util.MathHelper;
import net.minecraft.world.*;
import net.minecraft.world.biome.BiomeGenBase;
import net.minecraft.world.chunk.Chunk;
import net.minecraft.world.chunk.IChunkProvider;
import net.minecraft.world.gen.*;
import net.minecraft.world.gen.feature.WorldGenLakes;
import net.minecraft.world.gen.structure.MapGenMineshaft;
import net.minecraft.world.gen.structure.MapGenScatteredFeature;
import net.minecraft.world.gen.structure.MapGenVillage;

import gtPlusPlus.api.objects.Logger;
import gtPlusPlus.everglades.dimension.Dimension_Everglades;
import net.minecraftforge.common.MinecraftForge;
import net.minecraftforge.event.terraingen.ChunkProviderEvent;
import net.minecraftforge.event.terraingen.PopulateChunkEvent;
import net.minecraftforge.event.terraingen.TerrainGen;

public class ChunkProviderModded implements IChunkProvider {
	private Random rand;
	private NoiseGeneratorOctaves field_147431_j;
	private NoiseGeneratorOctaves field_147432_k;
	private NoiseGeneratorOctaves field_147429_l;
	private NoiseGeneratorPerlin field_147430_m;
	/**
	 * 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;
	private WorldType field_147435_p;
	private final double[] field_147434_q;
	private final float[] parabolicField;
	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;
	double[] field_147427_d;
	double[] field_147428_e;
	double[] field_147425_f;
	double[] field_147426_g;
	int[][] field_73219_j = new int[32][32];
	{
		caveGenerator = TerrainGen.getModdedMapGen(caveGenerator,
				net.minecraftforge.event.terraingen.InitMapGenEvent.EventType.CAVE);
		/*
		 * strongholdGenerator = (MapGenStronghold)
		 * TerrainGen.getModdedMapGen(strongholdGenerator,
		 * net.minecraftforge.event.terraingen.InitMapGenEvent.EventType.
		 * STRONGHOLD);
		 */
		villageGenerator = (MapGenVillage) TerrainGen.getModdedMapGen(villageGenerator,
				net.minecraftforge.event.terraingen.InitMapGenEvent.EventType.VILLAGE);
		mineshaftGenerator = (MapGenMineshaft) TerrainGen.getModdedMapGen(mineshaftGenerator,
				net.minecraftforge.event.terraingen.InitMapGenEvent.EventType.MINESHAFT);
		scatteredFeatureGenerator = (MapGenScatteredFeature) TerrainGen.getModdedMapGen(scatteredFeatureGenerator,
				net.minecraftforge.event.terraingen.InitMapGenEvent.EventType.SCATTERED_FEATURE);
		ravineGenerator = TerrainGen.getModdedMapGen(ravineGenerator,
				net.minecraftforge.event.terraingen.InitMapGenEvent.EventType.RAVINE);
	}

	public ChunkProviderModded(World par1World, long par2) {
		this.worldObj = par1World;
		this.field_147435_p = par1World.getWorldInfo().getTerrainType();
		this.rand = new Random(par2);
		this.field_147431_j = new NoiseGeneratorOctaves(this.rand, 16);
		this.field_147432_k = new NoiseGeneratorOctaves(this.rand, 16);
		this.field_147429_l = new NoiseGeneratorOctaves(this.rand, 8);
		this.field_147430_m = new NoiseGeneratorPerlin(this.rand, 4);
		this.noiseGen5 = new NoiseGeneratorOctaves(this.rand, 10);
		this.noiseGen6 = new NoiseGeneratorOctaves(this.rand, 16);
		this.mobSpawnerNoise = new NoiseGeneratorOctaves(this.rand, 8);
		this.field_147434_q = new double[825];
		this.parabolicField = new float[25];

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

		NoiseGenerator[] noiseGens = { field_147431_j, field_147432_k, field_147429_l, field_147430_m, noiseGen5,
				noiseGen6, mobSpawnerNoise };
		noiseGens = TerrainGen.getModdedNoiseGenerators(par1World, this.rand, noiseGens);
		this.field_147431_j = (NoiseGeneratorOctaves) noiseGens[0];
		this.field_147432_k = (NoiseGeneratorOctaves) noiseGens[1];
		this.field_147429_l = (NoiseGeneratorOctaves) noiseGens[2];
		this.field_147430_m = (NoiseGeneratorPerlin) noiseGens[3];
		this.noiseGen5 = (NoiseGeneratorOctaves) noiseGens[4];
		this.noiseGen6 = (NoiseGeneratorOctaves) noiseGens[5];
		this.mobSpawnerNoise = (NoiseGeneratorOctaves) noiseGens[6];
	}

	public void func_147424_a(int p_147424_1_, int p_147424_2_, Block[] p_147424_3_) {
		byte b0 = 63;
		this.biomesForGeneration = this.worldObj.getWorldChunkManager()
				.getBiomesForGeneration(this.biomesForGeneration, p_147424_1_ * 4 - 2, p_147424_2_ * 4 - 2, 10, 10);
		this.func_147423_a(p_147424_1_ * 4, 0, p_147424_2_ * 4);

		for (int k = 0; k < 4; ++k) {
			int l = k * 5;
			int i1 = (k + 1) * 5;

			for (int j1 = 0; j1 < 4; ++j1) {
				int k1 = (l + j1) * 33;
				int l1 = (l + j1 + 1) * 33;
				int i2 = (i1 + j1) * 33;
				int j2 = (i1 + j1 + 1) * 33;

				for (int k2 = 0; k2 < 32; ++k2) {
					double d0 = 0.125D;
					double d1 = this.field_147434_q[k1 + k2];
					double d2 = this.field_147434_q[l1 + k2];
					double d3 = this.field_147434_q[i2 + k2];
					double d4 = this.field_147434_q[j2 + k2];
					double d5 = (this.field_147434_q[k1 + k2 + 1] - d1) * d0;
					double d6 = (this.field_147434_q[l1 + k2 + 1] - d2) * d0;
					double d7 = (this.field_147434_q[i2 + k2 + 1] - d3) * d0;
					double d8 = (this.field_147434_q[j2 + k2 + 1] - d4) * d0;

					for (int l2 = 0; l2 < 8; ++l2) {
						double d9 = 0.25D;
						double d10 = d1;
						double d11 = d2;
						double d12 = (d3 - d1) * d9;
						double d13 = (d4 - d2) * d9;

						for (int i3 = 0; i3 < 4; ++i3) {
							int j3 = i3 + k * 4 << 12 | 0 + j1 * 4 << 8 | k2 * 8 + l2;
							short short1 = 256; //TODO - wots dis do
							j3 -= short1;
							double d14 = 0.25D;
							double d16 = (d11 - d10) * d14;
							double d15 = d10 - d16;

							for (int k3 = 0; k3 < 4; ++k3) {
								if ((d15 += d16) > 0.0D) {
									p_147424_3_[j3 += short1] = Dimension_Everglades.blockMainFiller;
								}
								else if (k2 * 8 + l2 < b0) {
									try {
										p_147424_3_[j3 += short1] = Dimension_Everglades.blockFluidLakes; //River Fluid		 .
									}
									catch (Throwable t){
										p_147424_3_[j3 += short1] = Blocks.water; //River Fluid	Fallback										
									}
								}
								else {
									p_147424_3_[j3 += short1] = null;
								}
							}

							d10 += d12;
							d11 += d13;
						}

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

	public void replaceBlocksForBiome(int p_147422_1_, int p_147422_2_, Block[] p_147422_3_, byte[] p_147422_4_, BiomeGenBase[] p_147422_5_) {
		@SuppressWarnings("deprecation")
		ChunkProviderEvent.ReplaceBiomeBlocks event = new ChunkProviderEvent.ReplaceBiomeBlocks(this, p_147422_1_,
				p_147422_2_, p_147422_3_, p_147422_5_);
		MinecraftForge.EVENT_BUS.post(event);
		if (event.getResult() == cpw.mods.fml.common.eventhandler.Event.Result.DENY)
			return;

		double d0 = 0.03125D;
		this.stoneNoise = this.field_147430_m.func_151599_a(this.stoneNoise, p_147422_1_ * 16, p_147422_2_ * 16, 16,
				16, d0 * 2.0D, d0 * 2.0D, 1.0D);

		for (int k = 0; k < 16; ++k) {
			for (int l = 0; l < 16; ++l) {
				BiomeGenBase biomegenbase = p_147422_5_[l + k * 16];
				biomegenbase.genTerrainBlocks(this.worldObj, this.rand, p_147422_3_, p_147422_4_,
						p_147422_1_ * 16 + k, p_147422_2_ * 16 + l, this.stoneNoise[l + k * 16]);
			}
		}
	}

	/**
	 * loads or generates the chunk at the chunk location specified
	 */
	@Override
	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
	 */
	@Override
	public Chunk provideChunk(int par1, int par2) {
		this.rand.setSeed(par1 * 341873128712L + par2 * 132897987541L);
		Block[] ablock = new Block[65536];
		byte[] abyte = new byte[65536];
		this.func_147424_a(par1, par2, ablock);
		this.biomesForGeneration = this.worldObj.getWorldChunkManager()
				.loadBlockGeneratorData(this.biomesForGeneration, par1 * 16, par2 * 16, 16, 16);
		this.replaceBlocksForBiome(par1, par2, ablock, abyte, this.biomesForGeneration);

		Chunk chunk = new Chunk(this.worldObj, ablock, 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;
	}

	private void func_147423_a(int p_147423_1_, int p_147423_2_, int p_147423_3_) {
		this.field_147426_g = this.noiseGen6.generateNoiseOctaves(this.field_147426_g, p_147423_1_, p_147423_3_, 5,
				5, 200.0D, 200.0D, 0.5D);
		this.field_147427_d = this.field_147429_l.generateNoiseOctaves(this.field_147427_d, p_147423_1_,
				p_147423_2_, p_147423_3_, 5, 33, 5, 8.555150000000001D, 4.277575000000001D, 8.555150000000001D);
		this.field_147428_e = this.field_147431_j.generateNoiseOctaves(this.field_147428_e, p_147423_1_,
				p_147423_2_, p_147423_3_, 5, 33, 5, 684.412D, 684.412D, 684.412D);
		this.field_147425_f = this.field_147432_k.generateNoiseOctaves(this.field_147425_f, p_147423_1_,
				p_147423_2_, p_147423_3_, 5, 33, 5, 684.412D, 684.412D, 684.412D);
		int l = 0;
		int i1 = 0;
		for (int j1 = 0; j1 < 5; ++j1) {
			for (int k1 = 0; k1 < 5; ++k1) {
				float f = 0.0F;
				float f1 = 0.0F;
				float f2 = 0.0F;
				byte b0 = 2;
				BiomeGenBase biomegenbase = this.biomesForGeneration[j1 + 2 + (k1 + 2) * 10];

				for (int l1 = -b0; l1 <= b0; ++l1) {
					for (int i2 = -b0; i2 <= b0; ++i2) {
						BiomeGenBase biomegenbase1 = this.biomesForGeneration[j1 + l1 + 2 + (k1 + i2 + 2) * 10];
						float f3 = biomegenbase1.rootHeight;
						float f4 = biomegenbase1.heightVariation;

						if (this.field_147435_p == WorldType.AMPLIFIED && f3 > 0.0F) {
							f3 = 1.0F + f3 * 2.0F;
							f4 = 1.0F + f4 * 4.0F;
						}

						float f5 = this.parabolicField[l1 + 2 + (i2 + 2) * 5] / (f3 + 2.0F);

						if (biomegenbase1.rootHeight > biomegenbase.rootHeight) {
							f5 /= 2.0F;
						}

						f += f4 * f5;
						f1 += f3 * f5;
						f2 += f5;
					}
				}

				f /= f2;
				f1 /= f2;
				f = f * 0.9F + 0.1F;
				f1 = (f1 * 4.0F - 1.0F) / 8.0F;
				double d13 = this.field_147426_g[i1] / 8000.0D;

				if (d13 < 0.0D) {
					d13 = -d13 * 0.3D;
				}

				d13 = d13 * 3.0D - 2.0D;

				if (d13 < 0.0D) {
					d13 /= 2.0D;

					if (d13 < -1.0D) {
						d13 = -1.0D;
					}

					d13 /= 1.4D;
					d13 /= 2.0D;
				}
				else {
					if (d13 > 1.0D) {
						d13 = 1.0D;
					}

					d13 /= 8.0D;
				}

				++i1;
				double d12 = f1;
				double d14 = f;
				d12 += d13 * 0.2D;
				d12 = d12 * 8.5D / 8.0D;
				double d5 = 8.5D + d12 * 4.0D;

				for (int j2 = 0; j2 < 33; ++j2) {
					double d6 = (j2 - d5) * 12.0D * 128.0D / 256.0D / d14;

					if (d6 < 0.0D) {
						d6 *= 4.0D;
					}

					double d7 = this.field_147428_e[l] / 512.0D;
					double d8 = this.field_147425_f[l] / 512.0D;
					double d9 = (this.field_147427_d[l] / 10.0D + 1.0D) / 2.0D;
					double d10 = MathHelper.denormalizeClamp(d7, d8, d9) - d6;

					if (j2 > 29) {
						double d11 = (j2 - 29) / 3.0F;
						d10 = d10 * (1.0D - d11) + -10.0D * d11;
					}

					this.field_147434_q[l] = d10;
					++l;
				}
			}
		}
	}

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

	/**
	 * Populates chunk with ores etc etc
	 */
	@Override
	public void populate(IChunkProvider par1IChunkProvider, int par2, int par3) {
		BlockFalling.fallInstantly = false;
		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(par2 * i1 + par3 * j1 ^ this.worldObj.getSeed());
		boolean flag = false;

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

		int k1;
		int l1;
		int i2;

		if (biomegenbase != BiomeGenBase.desert && biomegenbase != BiomeGenBase.desertHills && !flag
				&& this.rand.nextInt(4) == 0 && TerrainGen.populate(par1IChunkProvider, worldObj, rand, par2, par3,
						flag, net.minecraftforge.event.terraingen.PopulateChunkEvent.Populate.EventType.LAKE)) {
			k1 = k + this.rand.nextInt(16) + 8;
			l1 = this.rand.nextInt(256);
			i2 = l + this.rand.nextInt(16) + 8;
			try {
				(new WorldGenLakes(Dimension_Everglades.blockFluidLakes)).generate(this.worldObj, this.rand, k1, l1, i2);
			} catch (NullPointerException n){
				n.getStackTrace();
				(new WorldGenLakes(Blocks.lava)).generate(this.worldObj, this.rand, k1, l1, i2);
				Logger.INFO("Error while generating DarkWorld Lake.");
			}
		}

		if (TerrainGen.populate(par1IChunkProvider, worldObj, rand, par2, par3, flag,
				net.minecraftforge.event.terraingen.PopulateChunkEvent.Populate.EventType.LAVA) && !flag
				&& this.rand.nextInt(8) == 0) {
			k1 = k + this.rand.nextInt(16) + 8;
			l1 = this.rand.nextInt(this.rand.nextInt(248) + 8);
			i2 = l + this.rand.nextInt(16) + 8;

			if (l1 < 63 || this.rand.nextInt(10) == 0) { //Changes 63 -> 128
				try{
					(new WorldGenLakes(Blocks.lava)).generate(this.worldObj, this.rand, k1, l1, i2);
				} catch (NullPointerException n){
					Logger.INFO("Error while generating DarkWorld Lake. [2]");
				}
			}
		}
		biomegenbase.decorate(this.worldObj, this.rand, k, l);
		SpawnerAnimals.performWorldGenSpawning(this.worldObj, biomegenbase, k + 8, l + 8, 16, 16, this.rand);
		k += 8;
		l += 8;

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

		BlockFalling.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.
	 */
	@Override
	public boolean saveChunks(boolean par1, IProgressUpdate par2IProgressUpdate) {
		return true;
	}

	/**
	 * Save extra data not associated with any Chunk. Not saved during
	 * autosave, only during world unload. Currently unimplemented.
	 */
	@Override
	public void saveExtraData() {
	}

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

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

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

	/**
	 * Returns a list of creatures of the specified type that can spawn at
	 * the given location.
	 */
	@SuppressWarnings("rawtypes")
	@Override
	public List getPossibleCreatures(EnumCreatureType par1EnumCreatureType, int par2, int par3, int par4) {
		BiomeGenBase biomegenbase = this.worldObj.getBiomeGenForCoords(par2, par4);
		return par1EnumCreatureType == EnumCreatureType.monster
				&& this.scatteredFeatureGenerator.func_143030_a(par2, par3, par4)
				? this.scatteredFeatureGenerator.getScatteredFeatureSpawnList()
						: biomegenbase.getSpawnableList(par1EnumCreatureType);
	}

	@Override
	public ChunkPosition func_147416_a(World p_147416_1_, String p_147416_2_, int p_147416_3_, int p_147416_4_, int p_147416_5_) {
		return 
		  "Village".equals(p_147416_2_) &&
		  this.villageGenerator != null ?
		  this.villageGenerator.func_151545_a(p_147416_1_,
		  p_147416_3_, p_147416_4_, p_147416_5_) :
		  null;
	}

	@Override
	public int getLoadedChunkCount() {
		return 0;
	}

	@Override
	public void recreateStructures(int par1, int par2) {

	}
}