001 package net.minecraft.world.gen;
002
003 import java.util.List;
004 import java.util.Random;
005 import net.minecraft.block.Block;
006 import net.minecraft.block.BlockSand;
007 import net.minecraft.entity.EnumCreatureType;
008 import net.minecraft.util.IProgressUpdate;
009 import net.minecraft.util.MathHelper;
010 import net.minecraft.world.ChunkPosition;
011 import net.minecraft.world.World;
012 import net.minecraft.world.biome.BiomeGenBase;
013 import net.minecraft.world.chunk.Chunk;
014 import net.minecraft.world.chunk.IChunkProvider;
015
016 import net.minecraftforge.common.*;
017 import net.minecraftforge.event.Event.*;
018 import net.minecraftforge.event.terraingen.*;
019
020 public 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 var5 = 2;
062 int var6 = var5 + 1;
063 byte var7 = 33;
064 int var8 = var5 + 1;
065 this.densities = this.initializeNoiseField(this.densities, par1 * var5, 0, par2 * var5, var6, var7, var8);
066
067 for (int var9 = 0; var9 < var5; ++var9)
068 {
069 for (int var10 = 0; var10 < var5; ++var10)
070 {
071 for (int var11 = 0; var11 < 32; ++var11)
072 {
073 double var12 = 0.25D;
074 double var14 = this.densities[((var9 + 0) * var8 + var10 + 0) * var7 + var11 + 0];
075 double var16 = this.densities[((var9 + 0) * var8 + var10 + 1) * var7 + var11 + 0];
076 double var18 = this.densities[((var9 + 1) * var8 + var10 + 0) * var7 + var11 + 0];
077 double var20 = this.densities[((var9 + 1) * var8 + var10 + 1) * var7 + var11 + 0];
078 double var22 = (this.densities[((var9 + 0) * var8 + var10 + 0) * var7 + var11 + 1] - var14) * var12;
079 double var24 = (this.densities[((var9 + 0) * var8 + var10 + 1) * var7 + var11 + 1] - var16) * var12;
080 double var26 = (this.densities[((var9 + 1) * var8 + var10 + 0) * var7 + var11 + 1] - var18) * var12;
081 double var28 = (this.densities[((var9 + 1) * var8 + var10 + 1) * var7 + var11 + 1] - var20) * var12;
082
083 for (int var30 = 0; var30 < 4; ++var30)
084 {
085 double var31 = 0.125D;
086 double var33 = var14;
087 double var35 = var16;
088 double var37 = (var18 - var14) * var31;
089 double var39 = (var20 - var16) * var31;
090
091 for (int var41 = 0; var41 < 8; ++var41)
092 {
093 int var42 = var41 + var9 * 8 << 11 | 0 + var10 * 8 << 7 | var11 * 4 + var30;
094 short var43 = 128;
095 double var44 = 0.125D;
096 double var46 = var33;
097 double var48 = (var35 - var33) * var44;
098
099 for (int var50 = 0; var50 < 8; ++var50)
100 {
101 int var51 = 0;
102
103 if (var46 > 0.0D)
104 {
105 var51 = Block.whiteStone.blockID;
106 }
107
108 par3ArrayOfByte[var42] = (byte)var51;
109 var42 += var43;
110 var46 += var48;
111 }
112
113 var33 += var37;
114 var35 += var39;
115 }
116
117 var14 += var22;
118 var16 += var24;
119 var18 += var26;
120 var20 += var28;
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 var5 = 0; var5 < 16; ++var5)
134 {
135 for (int var6 = 0; var6 < 16; ++var6)
136 {
137 byte var7 = 1;
138 int var8 = -1;
139 byte var9 = (byte)Block.whiteStone.blockID;
140 byte var10 = (byte)Block.whiteStone.blockID;
141
142 for (int var11 = 127; var11 >= 0; --var11)
143 {
144 int var12 = (var6 * 16 + var5) * 128 + var11;
145 byte var13 = par3ArrayOfByte[var12];
146
147 if (var13 == 0)
148 {
149 var8 = -1;
150 }
151 else if (var13 == Block.stone.blockID)
152 {
153 if (var8 == -1)
154 {
155 if (var7 <= 0)
156 {
157 var9 = 0;
158 var10 = (byte)Block.whiteStone.blockID;
159 }
160
161 var8 = var7;
162
163 if (var11 >= 0)
164 {
165 par3ArrayOfByte[var12] = var9;
166 }
167 else
168 {
169 par3ArrayOfByte[var12] = var10;
170 }
171 }
172 else if (var8 > 0)
173 {
174 --var8;
175 par3ArrayOfByte[var12] = var10;
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[] var3 = new byte[32768];
199 this.biomesForGeneration = this.endWorld.getWorldChunkManager().loadBlockGeneratorData(this.biomesForGeneration, par1 * 16, par2 * 16, 16, 16);
200 this.generateTerrain(par1, par2, var3, this.biomesForGeneration);
201 this.replaceBlocksForBiome(par1, par2, var3, this.biomesForGeneration);
202 Chunk var4 = new Chunk(this.endWorld, var3, par1, par2);
203 byte[] var5 = var4.getBiomeArray();
204
205 for (int var6 = 0; var6 < var5.length; ++var6)
206 {
207 var5[var6] = (byte)this.biomesForGeneration[var6].biomeID;
208 }
209
210 var4.generateSkylightMap();
211 return var4;
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 var8 = 684.412D;
230 double var10 = 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 var8 *= 2.0D;
234 this.noiseData1 = this.noiseGen3.generateNoiseOctaves(this.noiseData1, par2, par3, par4, par5, par6, par7, var8 / 80.0D, var10 / 160.0D, var8 / 80.0D);
235 this.noiseData2 = this.noiseGen1.generateNoiseOctaves(this.noiseData2, par2, par3, par4, par5, par6, par7, var8, var10, var8);
236 this.noiseData3 = this.noiseGen2.generateNoiseOctaves(this.noiseData3, par2, par3, par4, par5, par6, par7, var8, var10, var8);
237 int var12 = 0;
238 int var13 = 0;
239
240 for (int var14 = 0; var14 < par5; ++var14)
241 {
242 for (int var15 = 0; var15 < par7; ++var15)
243 {
244 double var16 = (this.noiseData4[var13] + 256.0D) / 512.0D;
245
246 if (var16 > 1.0D)
247 {
248 var16 = 1.0D;
249 }
250
251 double var18 = this.noiseData5[var13] / 8000.0D;
252
253 if (var18 < 0.0D)
254 {
255 var18 = -var18 * 0.3D;
256 }
257
258 var18 = var18 * 3.0D - 2.0D;
259 float var20 = (float)(var14 + par2 - 0) / 1.0F;
260 float var21 = (float)(var15 + par4 - 0) / 1.0F;
261 float var22 = 100.0F - MathHelper.sqrt_float(var20 * var20 + var21 * var21) * 8.0F;
262
263 if (var22 > 80.0F)
264 {
265 var22 = 80.0F;
266 }
267
268 if (var22 < -100.0F)
269 {
270 var22 = -100.0F;
271 }
272
273 if (var18 > 1.0D)
274 {
275 var18 = 1.0D;
276 }
277
278 var18 /= 8.0D;
279 var18 = 0.0D;
280
281 if (var16 < 0.0D)
282 {
283 var16 = 0.0D;
284 }
285
286 var16 += 0.5D;
287 var18 = var18 * (double)par6 / 16.0D;
288 ++var13;
289 double var23 = (double)par6 / 2.0D;
290
291 for (int var25 = 0; var25 < par6; ++var25)
292 {
293 double var26 = 0.0D;
294 double var28 = ((double)var25 - var23) * 8.0D / var16;
295
296 if (var28 < 0.0D)
297 {
298 var28 *= -1.0D;
299 }
300
301 double var30 = this.noiseData2[var12] / 512.0D;
302 double var32 = this.noiseData3[var12] / 512.0D;
303 double var34 = (this.noiseData1[var12] / 10.0D + 1.0D) / 2.0D;
304
305 if (var34 < 0.0D)
306 {
307 var26 = var30;
308 }
309 else if (var34 > 1.0D)
310 {
311 var26 = var32;
312 }
313 else
314 {
315 var26 = var30 + (var32 - var30) * var34;
316 }
317
318 var26 -= 8.0D;
319 var26 += (double)var22;
320 byte var36 = 2;
321 double var37;
322
323 if (var25 > par6 / 2 - var36)
324 {
325 var37 = (double)((float)(var25 - (par6 / 2 - var36)) / 64.0F);
326
327 if (var37 < 0.0D)
328 {
329 var37 = 0.0D;
330 }
331
332 if (var37 > 1.0D)
333 {
334 var37 = 1.0D;
335 }
336
337 var26 = var26 * (1.0D - var37) + -3000.0D * var37;
338 }
339
340 var36 = 8;
341
342 if (var25 < var36)
343 {
344 var37 = (double)((float)(var36 - var25) / ((float)var36 - 1.0F));
345 var26 = var26 * (1.0D - var37) + -30.0D * var37;
346 }
347
348 par1ArrayOfDouble[var12] = var26;
349 ++var12;
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 var4 = par2 * 16;
375 int var5 = par3 * 16;
376 BiomeGenBase var6 = this.endWorld.getBiomeGenForCoords(var4 + 16, var5 + 16);
377 var6.decorate(this.endWorld, this.endWorld.rand, var4, var5);
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 the 100 oldest chunks from memory, due to a bug with chunkSet.add() never being called it thinks the list
395 * is always empty and will not remove any chunks.
396 */
397 public boolean unload100OldestChunks()
398 {
399 return false;
400 }
401
402 /**
403 * Returns if the IChunkProvider supports saving.
404 */
405 public boolean canSave()
406 {
407 return true;
408 }
409
410 /**
411 * Converts the instance data to a readable string.
412 */
413 public String makeString()
414 {
415 return "RandomLevelSource";
416 }
417
418 /**
419 * Returns a list of creatures of the specified type that can spawn at the given location.
420 */
421 public List getPossibleCreatures(EnumCreatureType par1EnumCreatureType, int par2, int par3, int par4)
422 {
423 BiomeGenBase var5 = this.endWorld.getBiomeGenForCoords(par2, par4);
424 return var5 == null ? null : var5.getSpawnableList(par1EnumCreatureType);
425 }
426
427 /**
428 * Returns the location of the closest structure of the specified type. If not found returns null.
429 */
430 public ChunkPosition findClosestStructure(World par1World, String par2Str, int par3, int par4, int par5)
431 {
432 return null;
433 }
434
435 public int getLoadedChunkCount()
436 {
437 return 0;
438 }
439
440 public void recreateStructures(int par1, int par2) {}
441 }