src/mapgen.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "mapgen.h"
  21 #include "voxel.h"
  22 #include "noise.h"
  23 #include "biome.h"
  24 #include "mapblock.h"
  25 #include "mapnode.h"
  26 #include "map.h"
  27 //#include "serverobject.h"
  28 #include "content_sao.h"
  29 #include "nodedef.h"
  30 #include "content_mapnode.h" // For content_mapnode_get_new_name
  31 #include "voxelalgorithms.h"
  32 #include "profiler.h"
  33 #include "settings.h" // For g_settings
  34 #include "main.h" // For g_profiler
  35 #include "treegen.h"
  36 #include "mapgen_v6.h"
  37 #include "mapgen_v7.h"
  38 #include "serialization.h"
  39 #include "util/serialize.h"
  40 #include "filesys.h"
  41
  42 FlagDesc flagdesc_mapgen[] = {
  43         {"trees",          MG_TREES},
  44         {"caves",          MG_CAVES},
  45         {"dungeons",       MG_DUNGEONS},
  46         {"v6_jungles",     MGV6_JUNGLES},
  47         {"v6_biome_blend", MGV6_BIOME_BLEND},
  48         {"flat",           MG_FLAT},
  49         {"nolight",        MG_NOLIGHT},
  50         {NULL,             0}
  51 };
  52
  53 FlagDesc flagdesc_ore[] = {
  54         {"absheight",            OREFLAG_ABSHEIGHT},
  55         {"scatter_noisedensity", OREFLAG_DENSITY},
  56         {"claylike_nodeisnt",    OREFLAG_NODEISNT},
  57         {NULL,                   0}
  58 };
  59
  60 FlagDesc flagdesc_deco_schematic[] = {
  61         {"place_center_x", DECO_PLACE_CENTER_X},
  62         {"place_center_y", DECO_PLACE_CENTER_Y},
  63         {"place_center_z", DECO_PLACE_CENTER_Z},
  64         {NULL,             0}
  65 };
  66
  67 ///////////////////////////////////////////////////////////////////////////////
  68
  69
  70 Ore *createOre(OreType type) {
  71         switch (type) {
  72                 case ORE_SCATTER:
  73                         return new OreScatter;
  74                 case ORE_SHEET:
  75                         return new OreSheet;
  76                 //case ORE_CLAYLIKE: //TODO: implement this!
  77                 //      return new OreClaylike;
  78                 default:
  79                         return NULL;
  80         }
  81 }
  82
  83
  84 Ore::~Ore() {
  85         delete np;
  86         delete noise;
  87 }
  88
  89
  90 void Ore::resolveNodeNames(INodeDefManager *ndef) {
  91         if (ore == CONTENT_IGNORE) {
  92                 ore = ndef->getId(ore_name);
  93                 if (ore == CONTENT_IGNORE) {
  94                         errorstream << "Ore::resolveNodeNames: ore node '"
  95                                 << ore_name << "' not defined";
  96                         ore = CONTENT_AIR;
  97                         wherein.push_back(CONTENT_AIR);
  98                         return;
  99                 }
 100         }
 101
 102         for (size_t i=0; i != wherein_names.size(); i++) {
 103                 std::string name = wherein_names[i];
 104                 content_t c = ndef->getId(name);
 105                 if (c != CONTENT_IGNORE) {
 106                         wherein.push_back(c);
 107                 }
 108         }
 109 }
 110
 111
 112 void Ore::placeOre(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
 113         int in_range = 0;
 114
 115         in_range |= (nmin.Y <= height_max && nmax.Y >= height_min);
 116         if (flags & OREFLAG_ABSHEIGHT)
 117                 in_range |= (nmin.Y >= -height_max && nmax.Y <= -height_min) << 1;
 118         if (!in_range)
 119                 return;
 120
 121         int ymin, ymax;
 122         if (in_range & ORE_RANGE_MIRROR) {
 123                 ymin = MYMAX(nmin.Y, -height_max);
 124                 ymax = MYMIN(nmax.Y, -height_min);
 125         } else {
 126                 ymin = MYMAX(nmin.Y, height_min);
 127                 ymax = MYMIN(nmax.Y, height_max);
 128         }
 129         if (clust_size >= ymax - ymin + 1)
 130                 return;
 131
 132         nmin.Y = ymin;
 133         nmax.Y = ymax;
 134         generate(mg->vm, mg->seed, blockseed, nmin, nmax);
 135 }
 136
 137
 138 void OreScatter::generate(ManualMapVoxelManipulator *vm, int seed,
 139                                                   u32 blockseed, v3s16 nmin, v3s16 nmax) {
 140         PseudoRandom pr(blockseed);
 141         MapNode n_ore(ore, 0, ore_param2);
 142
 143         int volume = (nmax.X - nmin.X + 1) *
 144                                  (nmax.Y - nmin.Y + 1) *
 145                                  (nmax.Z - nmin.Z + 1);
 146         int csize     = clust_size;
 147         int orechance = (csize * csize * csize) / clust_num_ores;
 148         int nclusters = volume / clust_scarcity;
 149
 150         for (int i = 0; i != nclusters; i++) {
 151                 int x0 = pr.range(nmin.X, nmax.X - csize + 1);
 152                 int y0 = pr.range(nmin.Y, nmax.Y - csize + 1);
 153                 int z0 = pr.range(nmin.Z, nmax.Z - csize + 1);
 154
 155                 if (np && (NoisePerlin3D(np, x0, y0, z0, seed) < nthresh))
 156                         continue;
 157
 158                 for (int z1 = 0; z1 != csize; z1++)
 159                 for (int y1 = 0; y1 != csize; y1++)
 160                 for (int x1 = 0; x1 != csize; x1++) {
 161                         if (pr.range(1, orechance) != 1)
 162                                 continue;
 163
 164                         u32 i = vm->m_area.index(x0 + x1, y0 + y1, z0 + z1);
 165                         for (size_t ii = 0; ii < wherein.size(); ii++)
 166                                 if (vm->m_data[i].getContent() == wherein[ii])
 167                                         vm->m_data[i] = n_ore;
 168                 }
 169         }
 170 }
 171
 172
 173 void OreSheet::generate(ManualMapVoxelManipulator *vm, int seed,
 174                                                 u32 blockseed, v3s16 nmin, v3s16 nmax) {
 175         PseudoRandom pr(blockseed + 4234);
 176         MapNode n_ore(ore, 0, ore_param2);
 177
 178         int max_height = clust_size;
 179         int y_start = pr.range(nmin.Y, nmax.Y - max_height);
 180
 181         if (!noise) {
 182                 int sx = nmax.X - nmin.X + 1;
 183                 int sz = nmax.Z - nmin.Z + 1;
 184                 noise = new Noise(np, 0, sx, sz);
 185         }
 186         noise->seed = seed + y_start;
 187         noise->perlinMap2D(nmin.X, nmin.Z);
 188
 189         int index = 0;
 190         for (int z = nmin.Z; z <= nmax.Z; z++)
 191         for (int x = nmin.X; x <= nmax.X; x++) {
 192                 float noiseval = noise->result[index++];
 193                 if (noiseval < nthresh)
 194                         continue;
 195
 196                 int height = max_height * (1. / pr.range(1, 3));
 197                 int y0 = y_start + np->scale * noiseval; //pr.range(1, 3) - 1;
 198                 int y1 = y0 + height;
 199                 for (int y = y0; y != y1; y++) {
 200                         u32 i = vm->m_area.index(x, y, z);
 201                         if (!vm->m_area.contains(i))
 202                                 continue;
 203
 204                         for (size_t ii = 0; ii < wherein.size(); ii++)
 205                                 if (vm->m_data[i].getContent() == wherein[ii])
 206                                         vm->m_data[i] = n_ore;
 207                 }
 208         }
 209 }
 210
 211
 212 ///////////////////////////////////////////////////////////////////////////////
 213
 214
 215 Decoration *createDecoration(DecorationType type) {
 216         switch (type) {
 217                 case DECO_SIMPLE:
 218                         return new DecoSimple;
 219                 case DECO_SCHEMATIC:
 220                         return new DecoSchematic;
 221                 //case DECO_LSYSTEM:
 222                 //      return new DecoLSystem;
 223                 default:
 224                         return NULL;
 225         }
 226 }
 227
 228
 229 Decoration::Decoration() {
 230         mapseed    = 0;
 231         np         = NULL;
 232         fill_ratio = 0;
 233         sidelen    = 1;
 234 }
 235
 236
 237 Decoration::~Decoration() {
 238         delete np;
 239 }
 240
 241
 242 void Decoration::resolveNodeNames(INodeDefManager *ndef) {
 243         this->ndef = ndef;
 244
 245         if (c_place_on == CONTENT_IGNORE)
 246                 c_place_on = ndef->getId(place_on_name);
 247 }
 248
 249
 250 void Decoration::placeDeco(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
 251         PseudoRandom ps(blockseed + 53);
 252         int carea_size = nmax.X - nmin.X + 1;
 253
 254         // Divide area into parts
 255         if (carea_size % sidelen) {
 256                 errorstream << "Decoration::placeDeco: chunk size is not divisible by "
 257                         "sidelen; setting sidelen to " << carea_size << std::endl;
 258                 sidelen = carea_size;
 259         }
 260
 261         s16 divlen = carea_size / sidelen;
 262         int area = sidelen * sidelen;
 263
 264         for (s16 z0 = 0; z0 < divlen; z0++)
 265         for (s16 x0 = 0; x0 < divlen; x0++) {
 266                 v2s16 p2d_center( // Center position of part of division
 267                         nmin.X + sidelen / 2 + sidelen * x0,
 268                         nmin.Z + sidelen / 2 + sidelen * z0
 269                 );
 270                 v2s16 p2d_min( // Minimum edge of part of division
 271                         nmin.X + sidelen * x0,
 272                         nmin.Z + sidelen * z0
 273                 );
 274                 v2s16 p2d_max( // Maximum edge of part of division
 275                         nmin.X + sidelen + sidelen * x0 - 1,
 276                         nmin.Z + sidelen + sidelen * z0 - 1
 277                 );
 278
 279                 // Amount of decorations
 280                 float nval = np ?
 281                         NoisePerlin2D(np, p2d_center.X, p2d_center.Y, mapseed) :
 282                         fill_ratio;
 283                 u32 deco_count = area * MYMAX(nval, 0.f);
 284
 285                 for (u32 i = 0; i < deco_count; i++) {
 286                         s16 x = ps.range(p2d_min.X, p2d_max.X);
 287                         s16 z = ps.range(p2d_min.Y, p2d_max.Y);
 288
 289                         int mapindex = carea_size * (z - nmin.Z) + (x - nmin.X);
 290
 291                         s16 y = mg->heightmap ?
 292                                         mg->heightmap[mapindex] :
 293                                         mg->findGroundLevel(v2s16(x, z), nmin.Y, nmax.Y);
 294
 295                         if (y < nmin.Y || y > nmax.Y)
 296                                 continue;
 297
 298                         int height = getHeight();
 299                         int max_y = nmax.Y;// + MAP_BLOCKSIZE - 1;
 300                         if (y + 1 + height > max_y) {
 301                                 continue;
 302 #if 0
 303                                 printf("Decoration at (%d %d %d) cut off\n", x, y, z);
 304                                 //add to queue
 305                                 JMutexAutoLock cutofflock(cutoff_mutex);
 306                                 cutoffs.push_back(CutoffData(x, y, z, height));
 307 #endif
 308                         }
 309
 310                         if (mg->biomemap) {
 311                                 std::set<u8>::iterator iter;
 312
 313                                 if (biomes.size()) {
 314                                         iter = biomes.find(mg->biomemap[mapindex]);
 315                                         if (iter == biomes.end())
 316                                                 continue;
 317                                 }
 318                         }
 319
 320                         generate(mg, &ps, max_y, v3s16(x, y, z));
 321                 }
 322         }
 323 }
 324
 325
 326 #if 0
 327 void Decoration::placeCutoffs(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
 328         PseudoRandom pr(blockseed + 53);
 329         std::vector<CutoffData> handled_cutoffs;
 330
 331         // Copy over the cutoffs we're interested in so we don't needlessly hold a lock
 332         {
 333                 JMutexAutoLock cutofflock(cutoff_mutex);
 334                 for (std::list<CutoffData>::iterator i = cutoffs.begin();
 335                         i != cutoffs.end(); ++i) {
 336                         CutoffData cutoff = *i;
 337                         v3s16 p    = cutoff.p;
 338                         s16 height = cutoff.height;
 339                         if (p.X < nmin.X || p.X > nmax.X ||
 340                                 p.Z < nmin.Z || p.Z > nmax.Z)
 341                                 continue;
 342                         if (p.Y + height < nmin.Y || p.Y > nmax.Y)
 343                                 continue;
 344
 345                         handled_cutoffs.push_back(cutoff);
 346                 }
 347         }
 348
 349         // Generate the cutoffs
 350         for (size_t i = 0; i != handled_cutoffs.size(); i++) {
 351                 v3s16 p    = handled_cutoffs[i].p;
 352                 s16 height = handled_cutoffs[i].height;
 353
 354                 if (p.Y + height > nmax.Y) {
 355                         //printf("Decoration at (%d %d %d) cut off again!\n", p.X, p.Y, p.Z);
 356                         cuttoffs.push_back(v3s16(p.X, p.Y, p.Z));
 357                 }
 358
 359                 generate(mg, &pr, nmax.Y, nmin.Y - p.Y, v3s16(p.X, nmin.Y, p.Z));
 360         }
 361
 362         // Remove cutoffs that were handled from the cutoff list
 363         {
 364                 JMutexAutoLock cutofflock(cutoff_mutex);
 365                 for (std::list<CutoffData>::iterator i = cutoffs.begin();
 366                         i != cutoffs.end(); ++i) {
 367
 368                         for (size_t j = 0; j != handled_cutoffs.size(); j++) {
 369                                 CutoffData coff = *i;
 370                                 if (coff.p == handled_cutoffs[j].p)
 371                                         i = cutoffs.erase(i);
 372                         }
 373                 }
 374         }
 375 }
 376 #endif
 377
 378
 379 ///////////////////////////////////////////////////////////////////////////////
 380
 381
 382 void DecoSimple::resolveNodeNames(INodeDefManager *ndef) {
 383         Decoration::resolveNodeNames(ndef);
 384
 385         if (c_deco == CONTENT_IGNORE && !decolist_names.size()) {
 386                 c_deco = ndef->getId(deco_name);
 387                 if (c_deco == CONTENT_IGNORE) {
 388                         errorstream << "DecoSimple::resolveNodeNames: decoration node '"
 389                                 << deco_name << "' not defined" << std::endl;
 390                         c_deco = CONTENT_AIR;
 391                 }
 392         }
 393         if (c_spawnby == CONTENT_IGNORE) {
 394                 c_spawnby = ndef->getId(spawnby_name);
 395                 if (c_spawnby == CONTENT_IGNORE) {
 396                         errorstream << "DecoSimple::resolveNodeNames: spawnby node '"
 397                                 << spawnby_name << "' not defined" << std::endl;
 398                         nspawnby = -1;
 399                         c_spawnby = CONTENT_AIR;
 400                 }
 401         }
 402
 403         if (c_decolist.size())
 404                 return;
 405
 406         for (size_t i = 0; i != decolist_names.size(); i++) {
 407                 content_t c = ndef->getId(decolist_names[i]);
 408                 if (c == CONTENT_IGNORE) {
 409                         errorstream << "DecoSimple::resolveNodeNames: decolist node '"
 410                                 << decolist_names[i] << "' not defined" << std::endl;
 411                         c = CONTENT_AIR;
 412                 }
 413                 c_decolist.push_back(c);
 414         }
 415 }
 416
 417
 418 void DecoSimple::generate(Mapgen *mg, PseudoRandom *pr, s16 max_y, v3s16 p) {
 419         ManualMapVoxelManipulator *vm = mg->vm;
 420
 421         u32 vi = vm->m_area.index(p);
 422         if (vm->m_data[vi].getContent() != c_place_on &&
 423                 c_place_on != CONTENT_IGNORE)
 424                 return;
 425
 426         if (nspawnby != -1) {
 427                 int nneighs = 0;
 428                 v3s16 dirs[8] = { // a Moore neighborhood
 429                         v3s16( 0, 0,  1),
 430                         v3s16( 0, 0, -1),
 431                         v3s16( 1, 0,  0),
 432                         v3s16(-1, 0,  0),
 433                         v3s16( 1, 0,  1),
 434                         v3s16(-1, 0,  1),
 435                         v3s16(-1, 0, -1),
 436                         v3s16( 1, 0, -1)
 437                 };
 438
 439                 for (int i = 0; i != 8; i++) {
 440                         u32 index = vm->m_area.index(p + dirs[i]);
 441                         if (vm->m_area.contains(index) &&
 442                                 vm->m_data[index].getContent() == c_spawnby)
 443                                 nneighs++;
 444                 }
 445
 446                 if (nneighs < nspawnby)
 447                         return;
 448         }
 449
 450         size_t ndecos = c_decolist.size();
 451         content_t c_place = ndecos ? c_decolist[pr->range(0, ndecos - 1)] : c_deco;
 452
 453         s16 height = (deco_height_max > 0) ?
 454                 pr->range(deco_height, deco_height_max) : deco_height;
 455
 456         height = MYMIN(height, max_y - p.Y);
 457
 458         v3s16 em = vm->m_area.getExtent();
 459         for (int i = 0; i < height; i++) {
 460                 vm->m_area.add_y(em, vi, 1);
 461
 462                 content_t c = vm->m_data[vi].getContent();
 463                 if (c != CONTENT_AIR && c != CONTENT_IGNORE)
 464                         break;
 465
 466                 vm->m_data[vi] = MapNode(c_place);
 467         }
 468 }
 469
 470
 471 int DecoSimple::getHeight() {
 472         return (deco_height_max > 0) ? deco_height_max : deco_height;
 473 }
 474
 475
 476 std::string DecoSimple::getName() {
 477         return deco_name;
 478 }
 479
 480
 481 ///////////////////////////////////////////////////////////////////////////////
 482
 483
 484 DecoSchematic::DecoSchematic() {
 485         node_names  = NULL;
 486         schematic   = NULL;
 487         slice_probs = NULL;
 488         flags       = 0;
 489         size        = v3s16(0, 0, 0);
 490 }
 491
 492
 493 DecoSchematic::~DecoSchematic() {
 494         delete node_names;
 495         delete []schematic;
 496         delete []slice_probs;
 497 }
 498
 499
 500 void DecoSchematic::resolveNodeNames(INodeDefManager *ndef) {
 501         Decoration::resolveNodeNames(ndef);
 502
 503         if (filename.empty())
 504                 return;
 505
 506         if (!node_names) {
 507                 errorstream << "DecoSchematic::resolveNodeNames: node name list was "
 508                         "not created" << std::endl;
 509                 return;
 510         }
 511
 512         for (size_t i = 0; i != node_names->size(); i++) {
 513                 std::string name = node_names->at(i);
 514
 515                 std::map<std::string, std::string>::iterator it;
 516                 it = replacements.find(name);
 517                 if (it != replacements.end())
 518                         name = it->second;
 519
 520                 content_t c = ndef->getId(name);
 521                 if (c == CONTENT_IGNORE) {
 522                         errorstream << "DecoSchematic::resolveNodeNames: node '"
 523                                 << name << "' not defined" << std::endl;
 524                         c = CONTENT_AIR;
 525                 }
 526
 527                 c_nodes.push_back(c);
 528         }
 529
 530         for (int i = 0; i != size.X * size.Y * size.Z; i++)
 531                 schematic[i].setContent(c_nodes[schematic[i].getContent()]);
 532
 533         delete node_names;
 534         node_names = NULL;
 535 }
 536
 537
 538 void DecoSchematic::generate(Mapgen *mg, PseudoRandom *pr, s16 max_y, v3s16 p) {
 539         ManualMapVoxelManipulator *vm = mg->vm;
 540
 541         if (flags & DECO_PLACE_CENTER_X)
 542                 p.X -= (size.X + 1) / 2;
 543         if (flags & DECO_PLACE_CENTER_Y)
 544                 p.Y -= (size.Y + 1) / 2;
 545         if (flags & DECO_PLACE_CENTER_Z)
 546                 p.Z -= (size.Z + 1) / 2;
 547
 548         u32 vi = vm->m_area.index(p);
 549         if (vm->m_data[vi].getContent() != c_place_on &&
 550                 c_place_on != CONTENT_IGNORE)
 551                 return;
 552
 553         Rotation rot = (rotation == ROTATE_RAND) ?
 554                 (Rotation)pr->range(ROTATE_0, ROTATE_270) : rotation;
 555
 556         blitToVManip(p, vm, rot, false);
 557 }
 558
 559
 560 int DecoSchematic::getHeight() {
 561         return size.Y;
 562 }
 563
 564
 565 std::string DecoSchematic::getName() {
 566         return filename;
 567 }
 568
 569
 570 void DecoSchematic::blitToVManip(v3s16 p, ManualMapVoxelManipulator *vm,
 571                                                                 Rotation rot, bool force_placement) {
 572         int xstride = 1;
 573         int ystride = size.X;
 574         int zstride = size.X * size.Y;
 575
 576         s16 sx = size.X;
 577         s16 sy = size.Y;
 578         s16 sz = size.Z;
 579
 580         int i_start, i_step_x, i_step_z;
 581         switch (rot) {
 582                 case ROTATE_90:
 583                         i_start  = sx - 1;
 584                         i_step_x = zstride;
 585                         i_step_z = -xstride;
 586                         SWAP(s16, sx, sz);
 587                         break;
 588                 case ROTATE_180:
 589                         i_start  = zstride * (sz - 1) + sx - 1;
 590                         i_step_x = -xstride;
 591                         i_step_z = -zstride;
 592                         break;
 593                 case ROTATE_270:
 594                         i_start  = zstride * (sz - 1);
 595                         i_step_x = -zstride;
 596                         i_step_z = xstride;
 597                         SWAP(s16, sx, sz);
 598                         break;
 599                 default:
 600                         i_start  = 0;
 601                         i_step_x = xstride;
 602                         i_step_z = zstride;
 603         }
 604
 605         s16 y_map = p.Y;
 606         for (s16 y = 0; y != sy; y++) {
 607                 if (slice_probs[y] != MTSCHEM_PROB_ALWAYS &&
 608                         myrand_range(1, 255) > slice_probs[y])
 609                         continue;
 610
 611                 for (s16 z = 0; z != sz; z++) {
 612                         u32 i = z * i_step_z + y * ystride + i_start;
 613                         for (s16 x = 0; x != sx; x++, i += i_step_x) {
 614                                 u32 vi = vm->m_area.index(p.X + x, y_map, p.Z + z);
 615                                 if (!vm->m_area.contains(vi))
 616                                         continue;
 617
 618                                 if (schematic[i].getContent() == CONTENT_IGNORE)
 619                                         continue;
 620
 621                                 if (schematic[i].param1 == MTSCHEM_PROB_NEVER)
 622                                         continue;
 623
 624                                 if (!force_placement) {
 625                                         content_t c = vm->m_data[vi].getContent();
 626                                         if (c != CONTENT_AIR && c != CONTENT_IGNORE)
 627                                                 continue;
 628                                 }
 629
 630                                 if (schematic[i].param1 != MTSCHEM_PROB_ALWAYS &&
 631                                         myrand_range(1, 255) > schematic[i].param1)
 632                                         continue;
 633
 634                                 vm->m_data[vi] = schematic[i];
 635                                 vm->m_data[vi].param1 = 0;
 636
 637                                 if (rot)
 638                                         vm->m_data[vi].rotateAlongYAxis(ndef, rot);
 639                         }
 640                 }
 641                 y_map++;
 642         }
 643 }
 644
 645
 646 void DecoSchematic::placeStructure(Map *map, v3s16 p) {
 647         assert(schematic != NULL);
 648         ManualMapVoxelManipulator *vm = new ManualMapVoxelManipulator(map);
 649
 650         Rotation rot = (rotation == ROTATE_RAND) ?
 651                 (Rotation)myrand_range(ROTATE_0, ROTATE_270) : rotation;
 652
 653         v3s16 s = (rot == ROTATE_90 || rot == ROTATE_270) ?
 654                                 v3s16(size.Z, size.Y, size.X) : size;
 655
 656         if (flags & DECO_PLACE_CENTER_X)
 657                 p.X -= (s.X + 1) / 2;
 658         if (flags & DECO_PLACE_CENTER_Y)
 659                 p.Y -= (s.Y + 1) / 2;
 660         if (flags & DECO_PLACE_CENTER_Z)
 661                 p.Z -= (s.Z + 1) / 2;
 662
 663         v3s16 bp1 = getNodeBlockPos(p);
 664         v3s16 bp2 = getNodeBlockPos(p + s - v3s16(1,1,1));
 665         vm->initialEmerge(bp1, bp2);
 666
 667         blitToVManip(p, vm, rot, true);
 668
 669         std::map<v3s16, MapBlock *> lighting_modified_blocks;
 670         std::map<v3s16, MapBlock *> modified_blocks;
 671         vm->blitBackAll(&modified_blocks);
 672
 673         // TODO: Optimize this by using Mapgen::calcLighting() instead
 674         lighting_modified_blocks.insert(modified_blocks.begin(), modified_blocks.end());
 675         map->updateLighting(lighting_modified_blocks, modified_blocks);
 676
 677         MapEditEvent event;
 678         event.type = MEET_OTHER;
 679         for (std::map<v3s16, MapBlock *>::iterator
 680                 it = modified_blocks.begin();
 681                 it != modified_blocks.end(); ++it)
 682                 event.modified_blocks.insert(it->first);
 683
 684         map->dispatchEvent(&event);
 685 }
 686
 687
 688 bool DecoSchematic::loadSchematicFile() {
 689         content_t cignore = CONTENT_IGNORE;
 690         bool have_cignore = false;
 691
 692         std::ifstream is(filename.c_str(), std::ios_base::binary);
 693
 694         u32 signature = readU32(is);
 695         if (signature != MTSCHEM_FILE_SIGNATURE) {
 696                 errorstream << "loadSchematicFile: invalid schematic "
 697                         "file" << std::endl;
 698                 return false;
 699         }
 700
 701         u16 version = readU16(is);
 702         if (version > MTSCHEM_FILE_VER_HIGHEST_READ) {
 703                 errorstream << "loadSchematicFile: unsupported schematic "
 704                         "file version" << std::endl;
 705                 return false;
 706         }
 707
 708         size = readV3S16(is);
 709
 710         delete []slice_probs;
 711         slice_probs = new u8[size.Y];
 712         if (version >= 3) {
 713                 for (int y = 0; y != size.Y; y++)
 714                         slice_probs[y] = readU8(is);
 715         } else {
 716                 for (int y = 0; y != size.Y; y++)
 717                         slice_probs[y] = MTSCHEM_PROB_ALWAYS;
 718         }
 719
 720         int nodecount = size.X * size.Y * size.Z;
 721
 722         u16 nidmapcount = readU16(is);
 723
 724         node_names = new std::vector<std::string>;
 725         for (int i = 0; i != nidmapcount; i++) {
 726                 std::string name = deSerializeString(is);
 727                 if (name == "ignore") {
 728                         name = "air";
 729                         cignore = i;
 730                         have_cignore = true;
 731                 }
 732                 node_names->push_back(name);
 733         }
 734
 735         delete []schematic;
 736         schematic = new MapNode[nodecount];
 737         MapNode::deSerializeBulk(is, SER_FMT_VER_HIGHEST_READ, schematic,
 738                                 nodecount, 2, 2, true);
 739
 740         if (version == 1) { // fix up the probability values
 741                 for (int i = 0; i != nodecount; i++) {
 742                         if (schematic[i].param1 == 0)
 743                                 schematic[i].param1 = MTSCHEM_PROB_ALWAYS;
 744                         if (have_cignore && schematic[i].getContent() == cignore)
 745                                 schematic[i].param1 = MTSCHEM_PROB_NEVER;
 746                 }
 747         }
 748
 749         return true;
 750 }
 751
 752
 753 /*
 754         Minetest Schematic File Format
 755
 756         All values are stored in big-endian byte order.
 757         [u32] signature: 'MTSM'
 758         [u16] version: 3
 759         [u16] size X
 760         [u16] size Y
 761         [u16] size Z
 762         For each Y:
 763                 [u8] slice probability value
 764         [Name-ID table] Name ID Mapping Table
 765                 [u16] name-id count
 766                 For each name-id mapping:
 767                         [u16] name length
 768                         [u8[]] name
 769         ZLib deflated {
 770         For each node in schematic:  (for z, y, x)
 771                 [u16] content
 772         For each node in schematic:
 773                 [u8] probability of occurance (param1)
 774         For each node in schematic:
 775                 [u8] param2
 776         }
 777
 778         Version changes:
 779         1 - Initial version
 780         2 - Fixed messy never/always place; 0 probability is now never, 0xFF is always
 781 */
 782 void DecoSchematic::saveSchematicFile(INodeDefManager *ndef) {
 783         std::ostringstream ss(std::ios_base::binary);
 784
 785         writeU32(ss, MTSCHEM_FILE_SIGNATURE);         // signature
 786         writeU16(ss, MTSCHEM_FILE_VER_HIGHEST_WRITE); // version
 787         writeV3S16(ss, size);                         // schematic size
 788
 789         for (int y = 0; y != size.Y; y++)             // Y slice probabilities
 790                 writeU8(ss, slice_probs[y]);
 791
 792         std::vector<content_t> usednodes;
 793         int nodecount = size.X * size.Y * size.Z;
 794         build_nnlist_and_update_ids(schematic, nodecount, &usednodes);
 795
 796         u16 numids = usednodes.size();
 797         writeU16(ss, numids); // name count
 798         for (int i = 0; i != numids; i++)
 799                 ss << serializeString(ndef->get(usednodes[i]).name); // node names
 800
 801         // compressed bulk node data
 802         MapNode::serializeBulk(ss, SER_FMT_VER_HIGHEST_WRITE, schematic,
 803                                 nodecount, 2, 2, true);
 804
 805         fs::safeWriteToFile(filename, ss.str());
 806 }
 807
 808
 809 void build_nnlist_and_update_ids(MapNode *nodes, u32 nodecount,
 810                                                 std::vector<content_t> *usednodes) {
 811         std::map<content_t, content_t> nodeidmap;
 812         content_t numids = 0;
 813
 814         for (u32 i = 0; i != nodecount; i++) {
 815                 content_t id;
 816                 content_t c = nodes[i].getContent();
 817
 818                 std::map<content_t, content_t>::const_iterator it = nodeidmap.find(c);
 819                 if (it == nodeidmap.end()) {
 820                         id = numids;
 821                         numids++;
 822
 823                         usednodes->push_back(c);
 824                         nodeidmap.insert(std::make_pair(c, id));
 825                 } else {
 826                         id = it->second;
 827                 }
 828                 nodes[i].setContent(id);
 829         }
 830 }
 831
 832
 833 bool DecoSchematic::getSchematicFromMap(Map *map, v3s16 p1, v3s16 p2) {
 834         ManualMapVoxelManipulator *vm = new ManualMapVoxelManipulator(map);
 835
 836         v3s16 bp1 = getNodeBlockPos(p1);
 837         v3s16 bp2 = getNodeBlockPos(p2);
 838         vm->initialEmerge(bp1, bp2);
 839
 840         size = p2 - p1 + 1;
 841
 842         slice_probs = new u8[size.Y];
 843         for (s16 y = 0; y != size.Y; y++)
 844                 slice_probs[y] = MTSCHEM_PROB_ALWAYS;
 845
 846         schematic = new MapNode[size.X * size.Y * size.Z];
 847
 848         u32 i = 0;
 849         for (s16 z = p1.Z; z <= p2.Z; z++)
 850         for (s16 y = p1.Y; y <= p2.Y; y++) {
 851                 u32 vi = vm->m_area.index(p1.X, y, z);
 852                 for (s16 x = p1.X; x <= p2.X; x++, i++, vi++) {
 853                         schematic[i] = vm->m_data[vi];
 854                         schematic[i].param1 = MTSCHEM_PROB_ALWAYS;
 855                 }
 856         }
 857
 858         delete vm;
 859         return true;
 860 }
 861
 862
 863 void DecoSchematic::applyProbabilities(v3s16 p0,
 864         std::vector<std::pair<v3s16, u8> > *plist,
 865         std::vector<std::pair<s16, u8> > *splist) {
 866
 867         for (size_t i = 0; i != plist->size(); i++) {
 868                 v3s16 p = (*plist)[i].first - p0;
 869                 int index = p.Z * (size.Y * size.X) + p.Y * size.X + p.X;
 870                 if (index < size.Z * size.Y * size.X) {
 871                         u8 prob = (*plist)[i].second;
 872                         schematic[index].param1 = prob;
 873
 874                         // trim unnecessary node names from schematic
 875                         if (prob == MTSCHEM_PROB_NEVER)
 876                                 schematic[index].setContent(CONTENT_AIR);
 877                 }
 878         }
 879
 880         for (size_t i = 0; i != splist->size(); i++) {
 881                 s16 y = (*splist)[i].first - p0.Y;
 882                 slice_probs[y] = (*splist)[i].second;
 883         }
 884 }
 885
 886
 887 ///////////////////////////////////////////////////////////////////////////////
 888
 889
 890 Mapgen::Mapgen() {
 891         seed        = 0;
 892         water_level = 0;
 893         generating  = false;
 894         id          = -1;
 895         vm          = NULL;
 896         ndef        = NULL;
 897         heightmap   = NULL;
 898         biomemap    = NULL;
 899 }
 900
 901
 902 // Returns Y one under area minimum if not found
 903 s16 Mapgen::findGroundLevelFull(v2s16 p2d) {
 904         v3s16 em = vm->m_area.getExtent();
 905         s16 y_nodes_max = vm->m_area.MaxEdge.Y;
 906         s16 y_nodes_min = vm->m_area.MinEdge.Y;
 907         u32 i = vm->m_area.index(p2d.X, y_nodes_max, p2d.Y);
 908         s16 y;
 909
 910         for (y = y_nodes_max; y >= y_nodes_min; y--) {
 911                 MapNode &n = vm->m_data[i];
 912                 if (ndef->get(n).walkable)
 913                         break;
 914
 915                 vm->m_area.add_y(em, i, -1);
 916         }
 917         return (y >= y_nodes_min) ? y : y_nodes_min - 1;
 918 }
 919
 920
 921 s16 Mapgen::findGroundLevel(v2s16 p2d, s16 ymin, s16 ymax) {
 922         v3s16 em = vm->m_area.getExtent();
 923         u32 i = vm->m_area.index(p2d.X, ymax, p2d.Y);
 924         s16 y;
 925
 926         for (y = ymax; y >= ymin; y--) {
 927                 MapNode &n = vm->m_data[i];
 928                 if (ndef->get(n).walkable)
 929                         break;
 930
 931                 vm->m_area.add_y(em, i, -1);
 932         }
 933         return y;
 934 }
 935
 936
 937 void Mapgen::updateHeightmap(v3s16 nmin, v3s16 nmax) {
 938         if (!heightmap)
 939                 return;
 940
 941         //TimeTaker t("Mapgen::updateHeightmap", NULL, PRECISION_MICRO);
 942         int index = 0;
 943         for (s16 z = nmin.Z; z <= nmax.Z; z++) {
 944                 for (s16 x = nmin.X; x <= nmax.X; x++, index++) {
 945                         s16 y = findGroundLevel(v2s16(x, z), nmin.Y, nmax.Y);
 946
 947                         // if the values found are out of range, trust the old heightmap
 948                         if (y == nmax.Y && heightmap[index] > nmax.Y)
 949                                 continue;
 950                         if (y == nmin.Y - 1 && heightmap[index] < nmin.Y)
 951                                 continue;
 952
 953                         heightmap[index] = y;
 954                 }
 955         }
 956         //printf("updateHeightmap: %dus\n", t.stop());
 957 }
 958
 959
 960 void Mapgen::updateLiquid(UniqueQueue<v3s16> *trans_liquid, v3s16 nmin, v3s16 nmax) {
 961         bool isliquid, wasliquid, rare;
 962         v3s16 em  = vm->m_area.getExtent();
 963         rare = g_settings->getBool("liquid_finite");
 964         int rarecnt = 0;
 965
 966         for (s16 z = nmin.Z; z <= nmax.Z; z++) {
 967                 for (s16 x = nmin.X; x <= nmax.X; x++) {
 968                         wasliquid = true;
 969
 970                         u32 i = vm->m_area.index(x, nmax.Y, z);
 971                         for (s16 y = nmax.Y; y >= nmin.Y; y--) {
 972                                 isliquid = ndef->get(vm->m_data[i]).isLiquid();
 973
 974                                 // there was a change between liquid and nonliquid, add to queue. no need to add every with liquid_finite
 975                                 if (isliquid != wasliquid && (!rare || !(rarecnt++ % 36)))
 976                                         trans_liquid->push_back(v3s16(x, y, z));
 977
 978                                 wasliquid = isliquid;
 979                                 vm->m_area.add_y(em, i, -1);
 980                         }
 981                 }
 982         }
 983 }
 984
 985
 986 void Mapgen::setLighting(v3s16 nmin, v3s16 nmax, u8 light) {
 987         ScopeProfiler sp(g_profiler, "EmergeThread: mapgen lighting update", SPT_AVG);
 988         VoxelArea a(nmin, nmax);
 989
 990         for (int z = a.MinEdge.Z; z <= a.MaxEdge.Z; z++) {
 991                 for (int y = a.MinEdge.Y; y <= a.MaxEdge.Y; y++) {
 992                         u32 i = vm->m_area.index(a.MinEdge.X, y, z);
 993                         for (int x = a.MinEdge.X; x <= a.MaxEdge.X; x++, i++)
 994                                 vm->m_data[i].param1 = light;
 995                 }
 996         }
 997 }
 998
 999
1000 void Mapgen::lightSpread(VoxelArea &a, v3s16 p, u8 light) {
1001         if (light <= 1 || !a.contains(p))
1002                 return;
1003
1004         u32 vi = vm->m_area.index(p);
1005         MapNode &nn = vm->m_data[vi];
1006
1007         light--;
1008         // should probably compare masked, but doesn't seem to make a difference
1009         if (light <= nn.param1 || !ndef->get(nn).light_propagates)
1010                 return;
1011
1012         nn.param1 = light;
1013
1014         lightSpread(a, p + v3s16(0, 0, 1), light);
1015         lightSpread(a, p + v3s16(0, 1, 0), light);
1016         lightSpread(a, p + v3s16(1, 0, 0), light);
1017         lightSpread(a, p - v3s16(0, 0, 1), light);
1018         lightSpread(a, p - v3s16(0, 1, 0), light);
1019         lightSpread(a, p - v3s16(1, 0, 0), light);
1020 }
1021
1022
1023 void Mapgen::calcLighting(v3s16 nmin, v3s16 nmax) {
1024         VoxelArea a(nmin, nmax);
1025         bool block_is_underground = (water_level >= nmax.Y);
1026
1027         ScopeProfiler sp(g_profiler, "EmergeThread: mapgen lighting update", SPT_AVG);
1028         //TimeTaker t("updateLighting");
1029
1030         // first, send vertical rays of sunshine downward
1031         v3s16 em = vm->m_area.getExtent();
1032         for (int z = a.MinEdge.Z; z <= a.MaxEdge.Z; z++) {
1033                 for (int x = a.MinEdge.X; x <= a.MaxEdge.X; x++) {
1034                         // see if we can get a light value from the overtop
1035                         u32 i = vm->m_area.index(x, a.MaxEdge.Y + 1, z);
1036                         if (vm->m_data[i].getContent() == CONTENT_IGNORE) {
1037                                 if (block_is_underground)
1038                                         continue;
1039                         } else if ((vm->m_data[i].param1 & 0x0F) != LIGHT_SUN) {
1040                                 continue;
1041                         }
1042                         vm->m_area.add_y(em, i, -1);
1043
1044                         for (int y = a.MaxEdge.Y; y >= a.MinEdge.Y; y--) {
1045                                 MapNode &n = vm->m_data[i];
1046                                 if (!ndef->get(n).sunlight_propagates)
1047                                         break;
1048                                 n.param1 = LIGHT_SUN;
1049                                 vm->m_area.add_y(em, i, -1);
1050                         }
1051                 }
1052         }
1053
1054         // now spread the sunlight and light up any sources
1055         for (int z = a.MinEdge.Z; z <= a.MaxEdge.Z; z++) {
1056                 for (int y = a.MinEdge.Y; y <= a.MaxEdge.Y; y++) {
1057                         u32 i = vm->m_area.index(a.MinEdge.X, y, z);
1058                         for (int x = a.MinEdge.X; x <= a.MaxEdge.X; x++, i++) {
1059                                 MapNode &n = vm->m_data[i];
1060                                 if (n.getContent() == CONTENT_IGNORE ||
1061                                         !ndef->get(n).light_propagates)
1062                                         continue;
1063
1064                                 u8 light_produced = ndef->get(n).light_source & 0x0F;
1065                                 if (light_produced)
1066                                         n.param1 = light_produced;
1067
1068                                 u8 light = n.param1 & 0x0F;
1069                                 if (light) {
1070                                         lightSpread(a, v3s16(x,     y,     z + 1), light - 1);
1071                                         lightSpread(a, v3s16(x,     y + 1, z    ), light - 1);
1072                                         lightSpread(a, v3s16(x + 1, y,     z    ), light - 1);
1073                                         lightSpread(a, v3s16(x,     y,     z - 1), light - 1);
1074                                         lightSpread(a, v3s16(x,     y - 1, z    ), light - 1);
1075                                         lightSpread(a, v3s16(x - 1, y,     z    ), light - 1);
1076                                 }
1077                         }
1078                 }
1079         }
1080
1081         //printf("updateLighting: %dms\n", t.stop());
1082 }
1083
1084
1085 void Mapgen::calcLightingOld(v3s16 nmin, v3s16 nmax) {
1086         enum LightBank banks[2] = {LIGHTBANK_DAY, LIGHTBANK_NIGHT};
1087         VoxelArea a(nmin, nmax);
1088         bool block_is_underground = (water_level > nmax.Y);
1089         bool sunlight = !block_is_underground;
1090
1091         ScopeProfiler sp(g_profiler, "EmergeThread: mapgen lighting update", SPT_AVG);
1092
1093         for (int i = 0; i < 2; i++) {
1094                 enum LightBank bank = banks[i];
1095                 std::set<v3s16> light_sources;
1096                 std::map<v3s16, u8> unlight_from;
1097
1098                 voxalgo::clearLightAndCollectSources(*vm, a, bank, ndef,
1099                                                                                          light_sources, unlight_from);
1100                 voxalgo::propagateSunlight(*vm, a, sunlight, light_sources, ndef);
1101
1102                 vm->unspreadLight(bank, unlight_from, light_sources, ndef);
1103                 vm->spreadLight(bank, light_sources, ndef);
1104         }
1105 }
1106
1107
1108 //////////////////////// Mapgen V6 parameter read/write
1109
1110 bool MapgenV6Params::readParams(Settings *settings) {
1111         freq_desert = settings->getFloat("mgv6_freq_desert");
1112         freq_beach  = settings->getFloat("mgv6_freq_beach");
1113
1114         bool success =
1115                 settings->getNoiseParams("mgv6_np_terrain_base",   np_terrain_base)   &&
1116                 settings->getNoiseParams("mgv6_np_terrain_higher", np_terrain_higher) &&
1117                 settings->getNoiseParams("mgv6_np_steepness",      np_steepness)      &&
1118                 settings->getNoiseParams("mgv6_np_height_select",  np_height_select)  &&
1119                 settings->getNoiseParams("mgv6_np_mud",            np_mud)            &&
1120                 settings->getNoiseParams("mgv6_np_beach",          np_beach)          &&
1121                 settings->getNoiseParams("mgv6_np_biome",          np_biome)          &&
1122                 settings->getNoiseParams("mgv6_np_cave",           np_cave)           &&
1123                 settings->getNoiseParams("mgv6_np_humidity",       np_humidity)       &&
1124                 settings->getNoiseParams("mgv6_np_trees",          np_trees)          &&
1125                 settings->getNoiseParams("mgv6_np_apple_trees",    np_apple_trees);
1126         return success;
1127 }
1128
1129
1130 void MapgenV6Params::writeParams(Settings *settings) {
1131         settings->setFloat("mgv6_freq_desert", freq_desert);
1132         settings->setFloat("mgv6_freq_beach",  freq_beach);
1133
1134         settings->setNoiseParams("mgv6_np_terrain_base",   np_terrain_base);
1135         settings->setNoiseParams("mgv6_np_terrain_higher", np_terrain_higher);
1136         settings->setNoiseParams("mgv6_np_steepness",      np_steepness);
1137         settings->setNoiseParams("mgv6_np_height_select",  np_height_select);
1138         settings->setNoiseParams("mgv6_np_mud",            np_mud);
1139         settings->setNoiseParams("mgv6_np_beach",          np_beach);
1140         settings->setNoiseParams("mgv6_np_biome",          np_biome);
1141         settings->setNoiseParams("mgv6_np_cave",           np_cave);
1142         settings->setNoiseParams("mgv6_np_humidity",       np_humidity);
1143         settings->setNoiseParams("mgv6_np_trees",          np_trees);
1144         settings->setNoiseParams("mgv6_np_apple_trees",    np_apple_trees);
1145 }
1146
1147
1148 bool MapgenV7Params::readParams(Settings *settings) {
1149         bool success =
1150                 settings->getNoiseParams("mgv7_np_terrain_base",    np_terrain_base)    &&
1151                 settings->getNoiseParams("mgv7_np_terrain_alt",     np_terrain_alt)     &&
1152                 settings->getNoiseParams("mgv7_np_terrain_persist", np_terrain_persist) &&
1153                 settings->getNoiseParams("mgv7_np_height_select",   np_height_select)   &&
1154                 settings->getNoiseParams("mgv7_np_filler_depth",    np_filler_depth)    &&
1155                 settings->getNoiseParams("mgv7_np_mount_height",    np_mount_height)    &&
1156                 settings->getNoiseParams("mgv7_np_ridge_uwater",    np_ridge_uwater)    &&
1157                 settings->getNoiseParams("mgv7_np_mountain",        np_mountain)        &&
1158                 settings->getNoiseParams("mgv7_np_ridge",           np_ridge);
1159         return success;
1160 }
1161
1162
1163 void MapgenV7Params::writeParams(Settings *settings) {
1164         settings->setNoiseParams("mgv7_np_terrain_base",    np_terrain_base);
1165         settings->setNoiseParams("mgv7_np_terrain_alt",     np_terrain_alt);
1166         settings->setNoiseParams("mgv7_np_terrain_persist", np_terrain_persist);
1167         settings->setNoiseParams("mgv7_np_height_select",   np_height_select);
1168         settings->setNoiseParams("mgv7_np_filler_depth",    np_filler_depth);
1169         settings->setNoiseParams("mgv7_np_mount_height",    np_mount_height);
1170         settings->setNoiseParams("mgv7_np_ridge_uwater",    np_ridge_uwater);
1171         settings->setNoiseParams("mgv7_np_mountain",        np_mountain);
1172         settings->setNoiseParams("mgv7_np_ridge",           np_ridge);
1173 }