001package net.minecraft.world.gen; 002 003import java.util.List; 004import java.util.Random; 005import net.minecraft.block.Block; 006import net.minecraft.block.BlockSand; 007import net.minecraft.entity.EnumCreatureType; 008import net.minecraft.util.IProgressUpdate; 009import net.minecraft.util.MathHelper; 010import net.minecraft.world.ChunkPosition; 011import net.minecraft.world.World; 012import net.minecraft.world.biome.BiomeGenBase; 013import net.minecraft.world.chunk.Chunk; 014import net.minecraft.world.chunk.IChunkProvider; 015 016import net.minecraftforge.common.*; 017import net.minecraftforge.event.Event.*; 018import net.minecraftforge.event.terraingen.*; 019 020public class ChunkProviderEnd implements IChunkProvider 021{ 022 private Random endRNG; 023 private NoiseGeneratorOctaves noiseGen1; 024 private NoiseGeneratorOctaves noiseGen2; 025 private NoiseGeneratorOctaves noiseGen3; 026 public NoiseGeneratorOctaves noiseGen4; 027 public NoiseGeneratorOctaves noiseGen5; 028 private World endWorld; 029 private double[] densities; 030 031 /** The biomes that are used to generate the chunk */ 032 private BiomeGenBase[] biomesForGeneration; 033 double[] noiseData1; 034 double[] noiseData2; 035 double[] noiseData3; 036 double[] noiseData4; 037 double[] noiseData5; 038 int[][] field_73203_h = new int[32][32]; 039 040 public ChunkProviderEnd(World par1World, long par2) 041 { 042 this.endWorld = par1World; 043 this.endRNG = new Random(par2); 044 this.noiseGen1 = new NoiseGeneratorOctaves(this.endRNG, 16); 045 this.noiseGen2 = new NoiseGeneratorOctaves(this.endRNG, 16); 046 this.noiseGen3 = new NoiseGeneratorOctaves(this.endRNG, 8); 047 this.noiseGen4 = new NoiseGeneratorOctaves(this.endRNG, 10); 048 this.noiseGen5 = new NoiseGeneratorOctaves(this.endRNG, 16); 049 050 NoiseGeneratorOctaves[] noiseGens = {noiseGen1, noiseGen2, noiseGen3, noiseGen4, noiseGen5}; 051 noiseGens = TerrainGen.getModdedNoiseGenerators(par1World, this.endRNG, noiseGens); 052 this.noiseGen1 = noiseGens[0]; 053 this.noiseGen2 = noiseGens[1]; 054 this.noiseGen3 = noiseGens[2]; 055 this.noiseGen4 = noiseGens[3]; 056 this.noiseGen5 = noiseGens[4]; 057 } 058 059 public void generateTerrain(int par1, int par2, byte[] par3ArrayOfByte, BiomeGenBase[] par4ArrayOfBiomeGenBase) 060 { 061 byte b0 = 2; 062 int k = b0 + 1; 063 byte b1 = 33; 064 int l = b0 + 1; 065 this.densities = this.initializeNoiseField(this.densities, par1 * b0, 0, par2 * b0, k, b1, l); 066 067 for (int i1 = 0; i1 < b0; ++i1) 068 { 069 for (int j1 = 0; j1 < b0; ++j1) 070 { 071 for (int k1 = 0; k1 < 32; ++k1) 072 { 073 double d0 = 0.25D; 074 double d1 = this.densities[((i1 + 0) * l + j1 + 0) * b1 + k1 + 0]; 075 double d2 = this.densities[((i1 + 0) * l + j1 + 1) * b1 + k1 + 0]; 076 double d3 = this.densities[((i1 + 1) * l + j1 + 0) * b1 + k1 + 0]; 077 double d4 = this.densities[((i1 + 1) * l + j1 + 1) * b1 + k1 + 0]; 078 double d5 = (this.densities[((i1 + 0) * l + j1 + 0) * b1 + k1 + 1] - d1) * d0; 079 double d6 = (this.densities[((i1 + 0) * l + j1 + 1) * b1 + k1 + 1] - d2) * d0; 080 double d7 = (this.densities[((i1 + 1) * l + j1 + 0) * b1 + k1 + 1] - d3) * d0; 081 double d8 = (this.densities[((i1 + 1) * l + j1 + 1) * b1 + k1 + 1] - d4) * d0; 082 083 for (int l1 = 0; l1 < 4; ++l1) 084 { 085 double d9 = 0.125D; 086 double d10 = d1; 087 double d11 = d2; 088 double d12 = (d3 - d1) * d9; 089 double d13 = (d4 - d2) * d9; 090 091 for (int i2 = 0; i2 < 8; ++i2) 092 { 093 int j2 = i2 + i1 * 8 << 11 | 0 + j1 * 8 << 7 | k1 * 4 + l1; 094 short short1 = 128; 095 double d14 = 0.125D; 096 double d15 = d10; 097 double d16 = (d11 - d10) * d14; 098 099 for (int k2 = 0; k2 < 8; ++k2) 100 { 101 int l2 = 0; 102 103 if (d15 > 0.0D) 104 { 105 l2 = Block.whiteStone.blockID; 106 } 107 108 par3ArrayOfByte[j2] = (byte)l2; 109 j2 += short1; 110 d15 += d16; 111 } 112 113 d10 += d12; 114 d11 += d13; 115 } 116 117 d1 += d5; 118 d2 += d6; 119 d3 += d7; 120 d4 += d8; 121 } 122 } 123 } 124 } 125 } 126 127 public void replaceBlocksForBiome(int par1, int par2, byte[] par3ArrayOfByte, BiomeGenBase[] par4ArrayOfBiomeGenBase) 128 { 129 ChunkProviderEvent.ReplaceBiomeBlocks event = new ChunkProviderEvent.ReplaceBiomeBlocks(this, par1, par2, par3ArrayOfByte, par4ArrayOfBiomeGenBase); 130 MinecraftForge.EVENT_BUS.post(event); 131 if (event.getResult() == Result.DENY) return; 132 133 for (int k = 0; k < 16; ++k) 134 { 135 for (int l = 0; l < 16; ++l) 136 { 137 byte b0 = 1; 138 int i1 = -1; 139 byte b1 = (byte)Block.whiteStone.blockID; 140 byte b2 = (byte)Block.whiteStone.blockID; 141 142 for (int j1 = 127; j1 >= 0; --j1) 143 { 144 int k1 = (l * 16 + k) * 128 + j1; 145 byte b3 = par3ArrayOfByte[k1]; 146 147 if (b3 == 0) 148 { 149 i1 = -1; 150 } 151 else if (b3 == Block.stone.blockID) 152 { 153 if (i1 == -1) 154 { 155 if (b0 <= 0) 156 { 157 b1 = 0; 158 b2 = (byte)Block.whiteStone.blockID; 159 } 160 161 i1 = b0; 162 163 if (j1 >= 0) 164 { 165 par3ArrayOfByte[k1] = b1; 166 } 167 else 168 { 169 par3ArrayOfByte[k1] = b2; 170 } 171 } 172 else if (i1 > 0) 173 { 174 --i1; 175 par3ArrayOfByte[k1] = b2; 176 } 177 } 178 } 179 } 180 } 181 } 182 183 /** 184 * loads or generates the chunk at the chunk location specified 185 */ 186 public Chunk loadChunk(int par1, int par2) 187 { 188 return this.provideChunk(par1, par2); 189 } 190 191 /** 192 * Will return back a chunk, if it doesn't exist and its not a MP client it will generates all the blocks for the 193 * specified chunk from the map seed and chunk seed 194 */ 195 public Chunk provideChunk(int par1, int par2) 196 { 197 this.endRNG.setSeed((long)par1 * 341873128712L + (long)par2 * 132897987541L); 198 byte[] abyte = new byte[32768]; 199 this.biomesForGeneration = this.endWorld.getWorldChunkManager().loadBlockGeneratorData(this.biomesForGeneration, par1 * 16, par2 * 16, 16, 16); 200 this.generateTerrain(par1, par2, abyte, this.biomesForGeneration); 201 this.replaceBlocksForBiome(par1, par2, abyte, this.biomesForGeneration); 202 Chunk chunk = new Chunk(this.endWorld, abyte, par1, par2); 203 byte[] abyte1 = chunk.getBiomeArray(); 204 205 for (int k = 0; k < abyte1.length; ++k) 206 { 207 abyte1[k] = (byte)this.biomesForGeneration[k].biomeID; 208 } 209 210 chunk.generateSkylightMap(); 211 return chunk; 212 } 213 214 /** 215 * generates a subset of the level's terrain data. Takes 7 arguments: the [empty] noise array, the position, and the 216 * size. 217 */ 218 private double[] initializeNoiseField(double[] par1ArrayOfDouble, int par2, int par3, int par4, int par5, int par6, int par7) 219 { 220 ChunkProviderEvent.InitNoiseField event = new ChunkProviderEvent.InitNoiseField(this, par1ArrayOfDouble, par2, par3, par4, par5, par6, par7); 221 MinecraftForge.EVENT_BUS.post(event); 222 if (event.getResult() == Result.DENY) return event.noisefield; 223 224 if (par1ArrayOfDouble == null) 225 { 226 par1ArrayOfDouble = new double[par5 * par6 * par7]; 227 } 228 229 double d0 = 684.412D; 230 double d1 = 684.412D; 231 this.noiseData4 = this.noiseGen4.generateNoiseOctaves(this.noiseData4, par2, par4, par5, par7, 1.121D, 1.121D, 0.5D); 232 this.noiseData5 = this.noiseGen5.generateNoiseOctaves(this.noiseData5, par2, par4, par5, par7, 200.0D, 200.0D, 0.5D); 233 d0 *= 2.0D; 234 this.noiseData1 = this.noiseGen3.generateNoiseOctaves(this.noiseData1, par2, par3, par4, par5, par6, par7, d0 / 80.0D, d1 / 160.0D, d0 / 80.0D); 235 this.noiseData2 = this.noiseGen1.generateNoiseOctaves(this.noiseData2, par2, par3, par4, par5, par6, par7, d0, d1, d0); 236 this.noiseData3 = this.noiseGen2.generateNoiseOctaves(this.noiseData3, par2, par3, par4, par5, par6, par7, d0, d1, d0); 237 int k1 = 0; 238 int l1 = 0; 239 240 for (int i2 = 0; i2 < par5; ++i2) 241 { 242 for (int j2 = 0; j2 < par7; ++j2) 243 { 244 double d2 = (this.noiseData4[l1] + 256.0D) / 512.0D; 245 246 if (d2 > 1.0D) 247 { 248 d2 = 1.0D; 249 } 250 251 double d3 = this.noiseData5[l1] / 8000.0D; 252 253 if (d3 < 0.0D) 254 { 255 d3 = -d3 * 0.3D; 256 } 257 258 d3 = d3 * 3.0D - 2.0D; 259 float f = (float)(i2 + par2 - 0) / 1.0F; 260 float f1 = (float)(j2 + par4 - 0) / 1.0F; 261 float f2 = 100.0F - MathHelper.sqrt_float(f * f + f1 * f1) * 8.0F; 262 263 if (f2 > 80.0F) 264 { 265 f2 = 80.0F; 266 } 267 268 if (f2 < -100.0F) 269 { 270 f2 = -100.0F; 271 } 272 273 if (d3 > 1.0D) 274 { 275 d3 = 1.0D; 276 } 277 278 d3 /= 8.0D; 279 d3 = 0.0D; 280 281 if (d2 < 0.0D) 282 { 283 d2 = 0.0D; 284 } 285 286 d2 += 0.5D; 287 d3 = d3 * (double)par6 / 16.0D; 288 ++l1; 289 double d4 = (double)par6 / 2.0D; 290 291 for (int k2 = 0; k2 < par6; ++k2) 292 { 293 double d5 = 0.0D; 294 double d6 = ((double)k2 - d4) * 8.0D / d2; 295 296 if (d6 < 0.0D) 297 { 298 d6 *= -1.0D; 299 } 300 301 double d7 = this.noiseData2[k1] / 512.0D; 302 double d8 = this.noiseData3[k1] / 512.0D; 303 double d9 = (this.noiseData1[k1] / 10.0D + 1.0D) / 2.0D; 304 305 if (d9 < 0.0D) 306 { 307 d5 = d7; 308 } 309 else if (d9 > 1.0D) 310 { 311 d5 = d8; 312 } 313 else 314 { 315 d5 = d7 + (d8 - d7) * d9; 316 } 317 318 d5 -= 8.0D; 319 d5 += (double)f2; 320 byte b0 = 2; 321 double d10; 322 323 if (k2 > par6 / 2 - b0) 324 { 325 d10 = (double)((float)(k2 - (par6 / 2 - b0)) / 64.0F); 326 327 if (d10 < 0.0D) 328 { 329 d10 = 0.0D; 330 } 331 332 if (d10 > 1.0D) 333 { 334 d10 = 1.0D; 335 } 336 337 d5 = d5 * (1.0D - d10) + -3000.0D * d10; 338 } 339 340 b0 = 8; 341 342 if (k2 < b0) 343 { 344 d10 = (double)((float)(b0 - k2) / ((float)b0 - 1.0F)); 345 d5 = d5 * (1.0D - d10) + -30.0D * d10; 346 } 347 348 par1ArrayOfDouble[k1] = d5; 349 ++k1; 350 } 351 } 352 } 353 354 return par1ArrayOfDouble; 355 } 356 357 /** 358 * Checks to see if a chunk exists at x, y 359 */ 360 public boolean chunkExists(int par1, int par2) 361 { 362 return true; 363 } 364 365 /** 366 * Populates chunk with ores etc etc 367 */ 368 public void populate(IChunkProvider par1IChunkProvider, int par2, int par3) 369 { 370 BlockSand.fallInstantly = true; 371 372 MinecraftForge.EVENT_BUS.post(new PopulateChunkEvent.Pre(par1IChunkProvider, endWorld, endWorld.rand, par2, par3, false)); 373 374 int k = par2 * 16; 375 int l = par3 * 16; 376 BiomeGenBase biomegenbase = this.endWorld.getBiomeGenForCoords(k + 16, l + 16); 377 biomegenbase.decorate(this.endWorld, this.endWorld.rand, k, l); 378 379 MinecraftForge.EVENT_BUS.post(new PopulateChunkEvent.Post(par1IChunkProvider, endWorld, endWorld.rand, par2, par3, false)); 380 381 BlockSand.fallInstantly = false; 382 } 383 384 /** 385 * Two modes of operation: if passed true, save all Chunks in one go. If passed false, save up to two chunks. 386 * Return true if all chunks have been saved. 387 */ 388 public boolean saveChunks(boolean par1, IProgressUpdate par2IProgressUpdate) 389 { 390 return true; 391 } 392 393 /** 394 * Unloads chunks that are marked to be unloaded. This is not guaranteed to unload every such chunk. 395 */ 396 public boolean unloadQueuedChunks() 397 { 398 return false; 399 } 400 401 /** 402 * Returns if the IChunkProvider supports saving. 403 */ 404 public boolean canSave() 405 { 406 return true; 407 } 408 409 /** 410 * Converts the instance data to a readable string. 411 */ 412 public String makeString() 413 { 414 return "RandomLevelSource"; 415 } 416 417 /** 418 * Returns a list of creatures of the specified type that can spawn at the given location. 419 */ 420 public List getPossibleCreatures(EnumCreatureType par1EnumCreatureType, int par2, int par3, int par4) 421 { 422 BiomeGenBase biomegenbase = this.endWorld.getBiomeGenForCoords(par2, par4); 423 return biomegenbase == null ? null : biomegenbase.getSpawnableList(par1EnumCreatureType); 424 } 425 426 /** 427 * Returns the location of the closest structure of the specified type. If not found returns null. 428 */ 429 public ChunkPosition findClosestStructure(World par1World, String par2Str, int par3, int par4, int par5) 430 { 431 return null; 432 } 433 434 public int getLoadedChunkCount() 435 { 436 return 0; 437 } 438 439 public void recreateStructures(int par1, int par2) {} 440}