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 "util/serialize.h"
  39
  40 FlagDesc flagdesc_mapgen[] = {
  41         {"trees",          MG_TREES},
  42         {"caves",          MG_CAVES},
  43         {"dungeons",       MG_DUNGEONS},
  44         {"v6_jungles",     MGV6_JUNGLES},
  45         {"v6_biome_blend", MGV6_BIOME_BLEND},
  46         {"flat",           MG_FLAT},
  47         {"nolight",        MG_NOLIGHT},
  48         {NULL,             0}
  49 };
  50
  51 FlagDesc flagdesc_ore[] = {
  52         {"absheight",            OREFLAG_ABSHEIGHT},
  53         {"scatter_noisedensity", OREFLAG_DENSITY},
  54         {"claylike_nodeisnt",    OREFLAG_NODEISNT},
  55         {NULL,                   0}
  56 };
  57
  58 FlagDesc flagdesc_deco_schematic[] = {
  59         {"place_center_x", DECO_PLACE_CENTER_X},
  60         {"place_center_y", DECO_PLACE_CENTER_Y},
  61         {"place_center_z", DECO_PLACE_CENTER_Z},
  62         {NULL,             0}
  63 };
  64
  65 ///////////////////////////////////////////////////////////////////////////////
  66
  67
  68 Ore *createOre(OreType type) {
  69         switch (type) {
  70                 case ORE_SCATTER:
  71                         return new OreScatter;
  72                 case ORE_SHEET:
  73                         return new OreSheet;
  74                 //case ORE_CLAYLIKE: //TODO: implement this!
  75                 //      return new OreClaylike;
  76                 default:
  77                         return NULL;
  78         }
  79 }
  80
  81
  82 Ore::~Ore() {
  83         delete np;
  84         delete noise;
  85 }
  86
  87
  88 void Ore::resolveNodeNames(INodeDefManager *ndef) {
  89         if (ore == CONTENT_IGNORE) {
  90                 ore = ndef->getId(ore_name);
  91                 if (ore == CONTENT_IGNORE) {
  92                         errorstream << "Ore::resolveNodeNames: ore node '"
  93                                 << ore_name << "' not defined";
  94                         ore     = CONTENT_AIR;
  95                         wherein = CONTENT_AIR;
  96                 }
  97         }
  98
  99         if (wherein == CONTENT_IGNORE) {
 100                 wherein = ndef->getId(wherein_name);
 101                 if (wherein == CONTENT_IGNORE) {
 102                         errorstream << "Ore::resolveNodeNames: wherein node '"
 103                                 << wherein_name << "' not defined";
 104                         ore     = CONTENT_AIR;
 105                         wherein = CONTENT_AIR;
 106                 }
 107         }
 108 }
 109
 110
 111 void Ore::placeOre(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
 112         int in_range = 0;
 113
 114         in_range |= (nmin.Y <= height_max && nmax.Y >= height_min);
 115         if (flags & OREFLAG_ABSHEIGHT)
 116                 in_range |= (nmin.Y >= -height_max && nmax.Y <= -height_min) << 1;
 117         if (!in_range)
 118                 return;
 119
 120         int ymin, ymax;
 121         if (in_range & ORE_RANGE_MIRROR) {
 122                 ymin = MYMAX(nmin.Y, -height_max);
 123                 ymax = MYMIN(nmax.Y, -height_min);
 124         } else {
 125                 ymin = MYMAX(nmin.Y, height_min);
 126                 ymax = MYMIN(nmax.Y, height_max);
 127         }
 128         if (clust_size >= ymax - ymin + 1)
 129                 return;
 130
 131         nmin.Y = ymin;
 132         nmax.Y = ymax;
 133         generate(mg->vm, mg->seed, blockseed, nmin, nmax);
 134 }
 135
 136
 137 void OreScatter::generate(ManualMapVoxelManipulator *vm, int seed,
 138                                                   u32 blockseed, v3s16 nmin, v3s16 nmax) {
 139         PseudoRandom pr(blockseed);
 140         MapNode n_ore(ore, 0, ore_param2);
 141
 142         int volume = (nmax.X - nmin.X + 1) *
 143                                  (nmax.Y - nmin.Y + 1) *
 144                                  (nmax.Z - nmin.Z + 1);
 145         int csize     = clust_size;
 146         int orechance = (csize * csize * csize) / clust_num_ores;
 147         int nclusters = volume / clust_scarcity;
 148
 149         for (int i = 0; i != nclusters; i++) {
 150                 int x0 = pr.range(nmin.X, nmax.X - csize + 1);
 151                 int y0 = pr.range(nmin.Y, nmax.Y - csize + 1);
 152                 int z0 = pr.range(nmin.Z, nmax.Z - csize + 1);
 153
 154                 if (np && (NoisePerlin3D(np, x0, y0, z0, seed) < nthresh))
 155                         continue;
 156
 157                 for (int z1 = 0; z1 != csize; z1++)
 158                 for (int y1 = 0; y1 != csize; y1++)
 159                 for (int x1 = 0; x1 != csize; x1++) {
 160                         if (pr.range(1, orechance) != 1)
 161                                 continue;
 162
 163                         u32 i = vm->m_area.index(x0 + x1, y0 + y1, z0 + z1);
 164                         if (vm->m_data[i].getContent() == wherein)
 165                                 vm->m_data[i] = n_ore;
 166                 }
 167         }
 168 }
 169
 170
 171 void OreSheet::generate(ManualMapVoxelManipulator *vm, int seed,
 172                                                 u32 blockseed, v3s16 nmin, v3s16 nmax) {
 173         PseudoRandom pr(blockseed + 4234);
 174         MapNode n_ore(ore, 0, ore_param2);
 175
 176         int max_height = clust_size;
 177         int y_start = pr.range(nmin.Y, nmax.Y - max_height);
 178
 179         if (!noise) {
 180                 int sx = nmax.X - nmin.X + 1;
 181                 int sz = nmax.Z - nmin.Z + 1;
 182                 noise = new Noise(np, 0, sx, sz);
 183         }
 184         noise->seed = seed + y_start;
 185         noise->perlinMap2D(nmin.X, nmin.Z);
 186
 187         int index = 0;
 188         for (int z = nmin.Z; z <= nmax.Z; z++)
 189         for (int x = nmin.X; x <= nmax.X; x++) {
 190                 float noiseval = noise->result[index++];
 191                 if (noiseval < nthresh)
 192                         continue;
 193
 194                 int height = max_height * (1. / pr.range(1, 3));
 195                 int y0 = y_start + np->scale * noiseval; //pr.range(1, 3) - 1;
 196                 int y1 = y0 + height;
 197                 for (int y = y0; y != y1; y++) {
 198                         u32 i = vm->m_area.index(x, y, z);
 199                         if (!vm->m_area.contains(i))
 200                                 continue;
 201
 202                         if (vm->m_data[i].getContent() == wherein)
 203                                 vm->m_data[i] = n_ore;
 204                 }
 205         }
 206 }
 207
 208
 209 ///////////////////////////////////////////////////////////////////////////////
 210
 211
 212 Decoration *createDecoration(DecorationType type) {
 213         switch (type) {
 214                 case DECO_SIMPLE:
 215                         return new DecoSimple;
 216                 case DECO_SCHEMATIC:
 217                         return new DecoSchematic;
 218                 //case DECO_LSYSTEM:
 219                 //      return new DecoLSystem;
 220                 default:
 221                         return NULL;
 222         }
 223 }
 224
 225
 226 Decoration::Decoration() {
 227         mapseed    = 0;
 228         np         = NULL;
 229         fill_ratio = 0;
 230         sidelen    = 1;
 231 }
 232
 233
 234 Decoration::~Decoration() {
 235         delete np;
 236 }
 237
 238
 239 void Decoration::resolveNodeNames(INodeDefManager *ndef) {
 240         this->ndef = ndef;
 241
 242         if (c_place_on == CONTENT_IGNORE)
 243                 c_place_on = ndef->getId(place_on_name);
 244 }
 245
 246
 247 void Decoration::placeDeco(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
 248         PseudoRandom ps(blockseed + 53);
 249         int carea_size = nmax.X - nmin.X + 1;
 250
 251         // Divide area into parts
 252         if (carea_size % sidelen) {
 253                 errorstream << "Decoration::placeDeco: chunk size is not divisible by "
 254                         "sidelen; setting sidelen to " << carea_size << std::endl;
 255                 sidelen = carea_size;
 256         }
 257
 258         s16 divlen = carea_size / sidelen;
 259         int area = sidelen * sidelen;
 260
 261         for (s16 z0 = 0; z0 < divlen; z0++)
 262         for (s16 x0 = 0; x0 < divlen; x0++) {
 263                 v2s16 p2d_center( // Center position of part of division
 264                         nmin.X + sidelen / 2 + sidelen * x0,
 265                         nmin.Z + sidelen / 2 + sidelen * z0
 266                 );
 267                 v2s16 p2d_min( // Minimum edge of part of division
 268                         nmin.X + sidelen * x0,
 269                         nmin.Z + sidelen * z0
 270                 );
 271                 v2s16 p2d_max( // Maximum edge of part of division
 272                         nmin.X + sidelen + sidelen * x0 - 1,
 273                         nmin.Z + sidelen + sidelen * z0 - 1
 274                 );
 275
 276                 // Amount of decorations
 277                 float nval = np ?
 278                         NoisePerlin2D(np, p2d_center.X, p2d_center.Y, mapseed) :
 279                         fill_ratio;
 280                 u32 deco_count = area * MYMAX(nval, 0.f);
 281
 282                 for (u32 i = 0; i < deco_count; i++) {
 283                         s16 x = ps.range(p2d_min.X, p2d_max.X);
 284                         s16 z = ps.range(p2d_min.Y, p2d_max.Y);
 285
 286                         int mapindex = carea_size * (z - nmin.Z) + (x - nmin.X);
 287
 288                         s16 y = mg->heightmap ?
 289                                         mg->heightmap[mapindex] :
 290                                         mg->findGroundLevel(v2s16(x, z), nmin.Y, nmax.Y);
 291
 292                         if (y < nmin.Y || y > nmax.Y)
 293                                 continue;
 294
 295                         int height = getHeight();
 296                         int max_y = nmax.Y;// + MAP_BLOCKSIZE - 1;
 297                         if (y + 1 + height > max_y) {
 298                                 continue;
 299 #if 0
 300                                 printf("Decoration at (%d %d %d) cut off\n", x, y, z);
 301                                 //add to queue
 302                                 JMutexAutoLock cutofflock(cutoff_mutex);
 303                                 cutoffs.push_back(CutoffData(x, y, z, height));
 304 #endif
 305                         }
 306
 307                         if (mg->biomemap) {
 308                                 std::set<u8>::iterator iter;
 309
 310                                 if (biomes.size()) {
 311                                         iter = biomes.find(mg->biomemap[mapindex]);
 312                                         if (iter == biomes.end())
 313                                                 continue;
 314                                 }
 315                         }
 316
 317                         generate(mg, &ps, max_y, v3s16(x, y, z));
 318                 }
 319         }
 320 }
 321
 322
 323 #if 0
 324 void Decoration::placeCutoffs(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
 325         PseudoRandom pr(blockseed + 53);
 326         std::vector<CutoffData> handled_cutoffs;
 327
 328         // Copy over the cutoffs we're interested in so we don't needlessly hold a lock
 329         {
 330                 JMutexAutoLock cutofflock(cutoff_mutex);
 331                 for (std::list<CutoffData>::iterator i = cutoffs.begin();
 332                         i != cutoffs.end(); ++i) {
 333                         CutoffData cutoff = *i;
 334                         v3s16 p    = cutoff.p;
 335                         s16 height = cutoff.height;
 336                         if (p.X < nmin.X || p.X > nmax.X ||
 337                                 p.Z < nmin.Z || p.Z > nmax.Z)
 338                                 continue;
 339                         if (p.Y + height < nmin.Y || p.Y > nmax.Y)
 340                                 continue;
 341
 342                         handled_cutoffs.push_back(cutoff);
 343                 }
 344         }
 345
 346         // Generate the cutoffs
 347         for (size_t i = 0; i != handled_cutoffs.size(); i++) {
 348                 v3s16 p    = handled_cutoffs[i].p;
 349                 s16 height = handled_cutoffs[i].height;
 350
 351                 if (p.Y + height > nmax.Y) {
 352                         //printf("Decoration at (%d %d %d) cut off again!\n", p.X, p.Y, p.Z);
 353                         cuttoffs.push_back(v3s16(p.X, p.Y, p.Z));
 354                 }
 355
 356                 generate(mg, &pr, nmax.Y, nmin.Y - p.Y, v3s16(p.X, nmin.Y, p.Z));
 357         }
 358
 359         // Remove cutoffs that were handled from the cutoff list
 360         {
 361                 JMutexAutoLock cutofflock(cutoff_mutex);
 362                 for (std::list<CutoffData>::iterator i = cutoffs.begin();
 363                         i != cutoffs.end(); ++i) {
 364
 365                         for (size_t j = 0; j != handled_cutoffs.size(); j++) {
 366                                 CutoffData coff = *i;
 367                                 if (coff.p == handled_cutoffs[j].p)
 368                                         i = cutoffs.erase(i);
 369                         }
 370                 }
 371         }
 372 }
 373 #endif
 374
 375
 376 ///////////////////////////////////////////////////////////////////////////////
 377
 378
 379 void DecoSimple::resolveNodeNames(INodeDefManager *ndef) {
 380         Decoration::resolveNodeNames(ndef);
 381
 382         if (c_deco == CONTENT_IGNORE) {
 383                 c_deco = ndef->getId(deco_name);
 384                 if (c_deco == CONTENT_IGNORE) {
 385                         errorstream << "DecoSimple::resolveNodeNames: decoration node '"
 386                                 << deco_name << "' not defined" << std::endl;
 387                         c_deco = CONTENT_AIR;
 388                 }
 389         }
 390         if (c_spawnby == CONTENT_IGNORE) {
 391                 c_spawnby = ndef->getId(spawnby_name);
 392                 if (c_spawnby == CONTENT_IGNORE) {
 393                         errorstream << "DecoSimple::resolveNodeNames: spawnby node '"
 394                                 << deco_name << "' not defined" << std::endl;
 395                         nspawnby = -1;
 396                         c_spawnby = CONTENT_AIR;
 397                 }
 398         }
 399
 400         if (c_decolist.size())
 401                 return;
 402
 403         for (size_t i = 0; i != decolist_names.size(); i++) {
 404                 content_t c = ndef->getId(decolist_names[i]);
 405                 if (c == CONTENT_IGNORE) {
 406                         errorstream << "DecoSimple::resolveNodeNames: decolist node '"
 407                                 << decolist_names[i] << "' not defined" << std::endl;
 408                         c = CONTENT_AIR;
 409                 }
 410                 c_decolist.push_back(c);
 411         }
 412 }
 413
 414
 415 void DecoSimple::generate(Mapgen *mg, PseudoRandom *pr, s16 max_y, v3s16 p) {
 416         ManualMapVoxelManipulator *vm = mg->vm;
 417
 418         u32 vi = vm->m_area.index(p);
 419         if (vm->m_data[vi].getContent() != c_place_on &&
 420                 c_place_on != CONTENT_IGNORE)
 421                 return;
 422
 423         if (nspawnby != -1) {
 424                 int nneighs = 0;
 425                 v3s16 dirs[8] = { // a Moore neighborhood
 426                         v3s16( 0, 0,  1),
 427                         v3s16( 0, 0, -1),
 428                         v3s16( 1, 0,  0),
 429                         v3s16(-1, 0,  0),
 430                         v3s16( 1, 0,  1),
 431                         v3s16(-1, 0,  1),
 432                         v3s16(-1, 0, -1),
 433                         v3s16( 1, 0, -1)
 434                 };
 435
 436                 for (int i = 0; i != 8; i++) {
 437                         u32 index = vm->m_area.index(p + dirs[i]);
 438                         if (vm->m_area.contains(index) &&
 439                                 vm->m_data[index].getContent() == c_spawnby)
 440                                 nneighs++;
 441                 }
 442
 443                 if (nneighs < nspawnby)
 444                         return;
 445         }
 446
 447         size_t ndecos = c_decolist.size();
 448         content_t c_place = ndecos ? c_decolist[pr->range(0, ndecos - 1)] : c_deco;
 449
 450         s16 height = (deco_height_max > 0) ?
 451                 pr->range(deco_height, deco_height_max) : deco_height;
 452
 453         height = MYMIN(height, max_y - p.Y);
 454
 455         v3s16 em = vm->m_area.getExtent();
 456         for (int i = 0; i < height; i++) {
 457                 vm->m_area.add_y(em, vi, 1);
 458
 459                 content_t c = vm->m_data[vi].getContent();
 460                 if (c != CONTENT_AIR && c != CONTENT_IGNORE)
 461                         break;
 462
 463                 vm->m_data[vi] = MapNode(c_place);
 464         }
 465 }
 466
 467
 468 int DecoSimple::getHeight() {
 469         return (deco_height_max > 0) ? deco_height_max : deco_height;
 470 }
 471
 472
 473 std::string DecoSimple::getName() {
 474         return deco_name;
 475 }
 476
 477
 478 ///////////////////////////////////////////////////////////////////////////////
 479
 480
 481 DecoSchematic::DecoSchematic() {
 482         node_names = NULL;
 483         schematic  = NULL;
 484         flags      = 0;
 485         size       = v3s16(0, 0, 0);
 486 }
 487
 488
 489 DecoSchematic::~DecoSchematic() {
 490         delete node_names;
 491         delete []schematic;
 492 }
 493
 494
 495 void DecoSchematic::resolveNodeNames(INodeDefManager *ndef) {
 496         Decoration::resolveNodeNames(ndef);
 497
 498         if (filename.empty())
 499                 return;
 500
 501         if (!node_names) {
 502                 errorstream << "DecoSchematic::resolveNodeNames: node name list was "
 503                         "not created" << std::endl;
 504                 return;
 505         }
 506
 507         for (size_t i = 0; i != node_names->size(); i++) {
 508                 content_t c = ndef->getId(node_names->at(i));
 509                 if (c == CONTENT_IGNORE) {
 510                         errorstream << "DecoSchematic::resolveNodeNames: node '"
 511                                 << node_names->at(i) << "' not defined" << std::endl;
 512                         c = CONTENT_AIR;
 513                 }
 514                 c_nodes.push_back(c);
 515         }
 516
 517         for (int i = 0; i != size.X * size.Y * size.Z; i++)
 518                 schematic[i].setContent(c_nodes[schematic[i].getContent()]);
 519
 520         delete node_names;
 521         node_names = NULL;
 522 }
 523
 524
 525 void DecoSchematic::generate(Mapgen *mg, PseudoRandom *pr, s16 max_y, v3s16 p) {
 526         ManualMapVoxelManipulator *vm = mg->vm;
 527
 528         if (flags & DECO_PLACE_CENTER_X)
 529                 p.X -= (size.X + 1) / 2;
 530         if (flags & DECO_PLACE_CENTER_Y)
 531                 p.Y -= (size.Y + 1) / 2;
 532         if (flags & DECO_PLACE_CENTER_Z)
 533                 p.Z -= (size.Z + 1) / 2;
 534
 535         u32 vi = vm->m_area.index(p);
 536         if (vm->m_data[vi].getContent() != c_place_on &&
 537                 c_place_on != CONTENT_IGNORE)
 538                 return;
 539
 540         Rotation rot = (rotation == ROTATE_RAND) ?
 541                 (Rotation)pr->range(ROTATE_0, ROTATE_270) : rotation;
 542
 543         blitToVManip(p, vm, rot, false);
 544 }
 545
 546
 547 int DecoSchematic::getHeight() {
 548         return size.Y;
 549 }
 550
 551
 552 std::string DecoSchematic::getName() {
 553         return filename;
 554 }
 555
 556
 557 void DecoSchematic::blitToVManip(v3s16 p, ManualMapVoxelManipulator *vm,
 558                                                                 Rotation rot, bool force_placement) {
 559         int xstride = 1;
 560         int ystride = size.X;
 561         int zstride = size.X * size.Y;
 562
 563         s16 sx = size.X;
 564         s16 sy = size.Y;
 565         s16 sz = size.Z;
 566
 567         int i_start, i_step_x, i_step_z;
 568         switch (rot) {
 569                 case ROTATE_90:
 570                         i_start  = sx - 1;
 571                         i_step_x = zstride;
 572                         i_step_z = -xstride;
 573                         SWAP(s16, sx, sz);
 574                         break;
 575                 case ROTATE_180:
 576                         i_start  = zstride * (sz - 1) + sx - 1;
 577                         i_step_x = -xstride;
 578                         i_step_z = -zstride;
 579                         break;
 580                 case ROTATE_270:
 581                         i_start  = zstride * (sz - 1);
 582                         i_step_x = -zstride;
 583                         i_step_z = xstride;
 584                         SWAP(s16, sx, sz);
 585                         break;
 586                 default:
 587                         i_start  = 0;
 588                         i_step_x = xstride;
 589                         i_step_z = zstride;
 590         }
 591
 592         for (s16 z = 0; z != sz; z++)
 593         for (s16 y = 0; y != sy; y++) {
 594                 u32 i = z * i_step_z + y * ystride + i_start;
 595                 for (s16 x = 0; x != sx; x++, i += i_step_x) {
 596                         u32 vi = vm->m_area.index(p.X + x, p.Y + y, p.Z + z);
 597                         if (!vm->m_area.contains(vi))
 598                                 continue;
 599
 600                         if (schematic[i].getContent() == CONTENT_IGNORE)
 601                                 continue;
 602
 603                         if (!force_placement) {
 604                                 content_t c = vm->m_data[vi].getContent();
 605                                 if (c != CONTENT_AIR && c != CONTENT_IGNORE)
 606                                         continue;
 607                         }
 608
 609                         if (schematic[i].param1 && myrand_range(1, 256) > schematic[i].param1)
 610                                 continue;
 611
 612                         vm->m_data[vi] = schematic[i];
 613                         vm->m_data[vi].param1 = 0;
 614
 615                         if (rot)
 616                                 vm->m_data[vi].rotateAlongYAxis(ndef, rot);
 617                 }
 618         }
 619 }
 620
 621
 622 void DecoSchematic::placeStructure(Map *map, v3s16 p) {
 623         assert(schematic != NULL);
 624         ManualMapVoxelManipulator *vm = new ManualMapVoxelManipulator(map);
 625
 626         Rotation rot = (rotation == ROTATE_RAND) ?
 627                 (Rotation)myrand_range(ROTATE_0, ROTATE_270) : rotation;
 628
 629         v3s16 s = (rot == ROTATE_90 || rot == ROTATE_270) ?
 630                                 v3s16(size.Z, size.Y, size.X) : size;
 631
 632         if (flags & DECO_PLACE_CENTER_X)
 633                 p.X -= (s.X + 1) / 2;
 634         if (flags & DECO_PLACE_CENTER_Y)
 635                 p.Y -= (s.Y + 1) / 2;
 636         if (flags & DECO_PLACE_CENTER_Z)
 637                 p.Z -= (s.Z + 1) / 2;
 638
 639         v3s16 bp1 = getNodeBlockPos(p);
 640         v3s16 bp2 = getNodeBlockPos(p + s - v3s16(1,1,1));
 641         vm->initialEmerge(bp1, bp2);
 642
 643         blitToVManip(p, vm, rot, true);
 644
 645         std::map<v3s16, MapBlock *> lighting_modified_blocks;
 646         std::map<v3s16, MapBlock *> modified_blocks;
 647         vm->blitBackAll(&modified_blocks);
 648
 649         // TODO: Optimize this by using Mapgen::calcLighting() instead
 650         lighting_modified_blocks.insert(modified_blocks.begin(), modified_blocks.end());
 651         map->updateLighting(lighting_modified_blocks, modified_blocks);
 652
 653         MapEditEvent event;
 654         event.type = MEET_OTHER;
 655         for (std::map<v3s16, MapBlock *>::iterator
 656                 it = modified_blocks.begin();
 657                 it != modified_blocks.end(); ++it)
 658                 event.modified_blocks.insert(it->first);
 659
 660         map->dispatchEvent(&event);
 661 }
 662
 663
 664 bool DecoSchematic::loadSchematicFile() {
 665         std::ifstream is(filename.c_str(), std::ios_base::binary);
 666
 667         u32 signature = readU32(is);
 668         if (signature != MTSCHEM_FILE_SIGNATURE) {
 669                 errorstream << "loadSchematicFile: invalid schematic "
 670                         "file" << std::endl;
 671                 return false;
 672         }
 673
 674         u16 version = readU16(is);
 675         if (version != 1) {
 676                 errorstream << "loadSchematicFile: unsupported schematic "
 677                         "file version" << std::endl;
 678                 return false;
 679         }
 680
 681         size = readV3S16(is);
 682         int nodecount = size.X * size.Y * size.Z;
 683
 684         u16 nidmapcount = readU16(is);
 685
 686         node_names = new std::vector<std::string>;
 687         for (int i = 0; i != nidmapcount; i++) {
 688                 std::string name = deSerializeString(is);
 689                 node_names->push_back(name);
 690         }
 691
 692         delete schematic;
 693         schematic = new MapNode[nodecount];
 694         MapNode::deSerializeBulk(is, SER_FMT_VER_HIGHEST_READ, schematic,
 695                                 nodecount, 2, 2, true);
 696
 697         return true;
 698 }
 699
 700
 701 /*
 702         Minetest Schematic File Format
 703
 704         All values are stored in big-endian byte order.
 705         [u32] signature: 'MTSM'
 706         [u16] version: 1
 707         [u16] size X
 708         [u16] size Y
 709         [u16] size Z
 710         [Name-ID table] Name ID Mapping Table
 711                 [u16] name-id count
 712                 For each name-id mapping:
 713                         [u16] name length
 714                         [u8[]] name
 715         ZLib deflated {
 716         For each node in schematic:  (for z, y, x)
 717                 [u16] content
 718         For each node in schematic:
 719                 [u8] probability of occurance (param1)
 720         For each node in schematic:
 721                 [u8] param2
 722         }
 723 */
 724 void DecoSchematic::saveSchematicFile(INodeDefManager *ndef) {
 725         std::ofstream os(filename.c_str(), std::ios_base::binary);
 726
 727         writeU32(os, MTSCHEM_FILE_SIGNATURE); // signature
 728         writeU16(os, 1);      // version
 729         writeV3S16(os, size); // schematic size
 730
 731         std::vector<content_t> usednodes;
 732         int nodecount = size.X * size.Y * size.Z;
 733         build_nnlist_and_update_ids(schematic, nodecount, &usednodes);
 734
 735         u16 numids = usednodes.size();
 736         writeU16(os, numids); // name count
 737         for (int i = 0; i != numids; i++)
 738                 os << serializeString(ndef->get(usednodes[i]).name); // node names
 739
 740         // compressed bulk node data
 741         MapNode::serializeBulk(os, SER_FMT_VER_HIGHEST_WRITE, schematic,
 742                                 nodecount, 2, 2, true);
 743 }
 744
 745
 746 void build_nnlist_and_update_ids(MapNode *nodes, u32 nodecount,
 747                                                 std::vector<content_t> *usednodes) {
 748         std::map<content_t, content_t> nodeidmap;
 749         content_t numids = 0;
 750
 751         for (u32 i = 0; i != nodecount; i++) {
 752                 content_t id;
 753                 content_t c = nodes[i].getContent();
 754
 755                 std::map<content_t, content_t>::const_iterator it = nodeidmap.find(c);
 756                 if (it == nodeidmap.end()) {
 757                         id = numids;
 758                         numids++;
 759
 760                         usednodes->push_back(c);
 761                         nodeidmap.insert(std::make_pair(c, id));
 762                 } else {
 763                         id = it->second;
 764                 }
 765                 nodes[i].setContent(id);
 766         }
 767 }
 768
 769
 770 bool DecoSchematic::getSchematicFromMap(Map *map, v3s16 p1, v3s16 p2) {
 771         ManualMapVoxelManipulator *vm = new ManualMapVoxelManipulator(map);
 772
 773         v3s16 bp1 = getNodeBlockPos(p1);
 774         v3s16 bp2 = getNodeBlockPos(p2);
 775         vm->initialEmerge(bp1, bp2);
 776
 777         size = p2 - p1 + 1;
 778         schematic = new MapNode[size.X * size.Y * size.Z];
 779
 780         u32 i = 0;
 781         for (s16 z = p1.Z; z <= p2.Z; z++)
 782         for (s16 y = p1.Y; y <= p2.Y; y++) {
 783                 u32 vi = vm->m_area.index(p1.X, y, z);
 784                 for (s16 x = p1.X; x <= p2.X; x++, i++, vi++) {
 785                         schematic[i] = vm->m_data[vi];
 786                         schematic[i].param1 = 0;
 787                 }
 788         }
 789
 790         delete vm;
 791         return true;
 792 }
 793
 794
 795 void DecoSchematic::applyProbabilities(std::vector<std::pair<v3s16, s16> > *plist, v3s16 p0) {
 796         for (size_t i = 0; i != plist->size(); i++) {
 797                 v3s16 p = (*plist)[i].first - p0;
 798                 int index = p.Z * (size.Y * size.X) + p.Y * size.X + p.X;
 799                 if (index < size.Z * size.Y * size.X) {
 800                         s16 prob = (*plist)[i].second;
 801                         if (prob != -1)
 802                                 schematic[index].param1 = prob;
 803                         else
 804                                 schematic[index].setContent(CONTENT_IGNORE);
 805                 }
 806         }
 807 }
 808
 809
 810 ///////////////////////////////////////////////////////////////////////////////
 811
 812
 813 Mapgen::Mapgen() {
 814         seed        = 0;
 815         water_level = 0;
 816         generating  = false;
 817         id          = -1;
 818         vm          = NULL;
 819         ndef        = NULL;
 820         heightmap   = NULL;
 821         biomemap    = NULL;
 822 }
 823
 824
 825 // Returns Y one under area minimum if not found
 826 s16 Mapgen::findGroundLevelFull(v2s16 p2d) {
 827         v3s16 em = vm->m_area.getExtent();
 828         s16 y_nodes_max = vm->m_area.MaxEdge.Y;
 829         s16 y_nodes_min = vm->m_area.MinEdge.Y;
 830         u32 i = vm->m_area.index(p2d.X, y_nodes_max, p2d.Y);
 831         s16 y;
 832
 833         for (y = y_nodes_max; y >= y_nodes_min; y--) {
 834                 MapNode &n = vm->m_data[i];
 835                 if (ndef->get(n).walkable)
 836                         break;
 837
 838                 vm->m_area.add_y(em, i, -1);
 839         }
 840         return (y >= y_nodes_min) ? y : y_nodes_min - 1;
 841 }
 842
 843
 844 s16 Mapgen::findGroundLevel(v2s16 p2d, s16 ymin, s16 ymax) {
 845         v3s16 em = vm->m_area.getExtent();
 846         u32 i = vm->m_area.index(p2d.X, ymax, p2d.Y);
 847         s16 y;
 848
 849         for (y = ymax; y >= ymin; y--) {
 850                 MapNode &n = vm->m_data[i];
 851                 if (ndef->get(n).walkable)
 852                         break;
 853
 854                 vm->m_area.add_y(em, i, -1);
 855         }
 856         return y;
 857 }
 858
 859
 860 void Mapgen::updateHeightmap(v3s16 nmin, v3s16 nmax) {
 861         if (!heightmap)
 862                 return;
 863
 864         //TimeTaker t("Mapgen::updateHeightmap", NULL, PRECISION_MICRO);
 865         int index = 0;
 866         for (s16 z = nmin.Z; z <= nmax.Z; z++) {
 867                 for (s16 x = nmin.X; x <= nmax.X; x++, index++) {
 868                         s16 y = findGroundLevel(v2s16(x, z), nmin.Y, nmax.Y);
 869
 870                         // if the values found are out of range, trust the old heightmap
 871                         if (y == nmax.Y && heightmap[index] > nmax.Y)
 872                                 continue;
 873                         if (y == nmin.Y - 1 && heightmap[index] < nmin.Y)
 874                                 continue;
 875
 876                         heightmap[index] = y;
 877                 }
 878         }
 879         //printf("updateHeightmap: %dus\n", t.stop());
 880 }
 881
 882
 883 void Mapgen::updateLiquid(UniqueQueue<v3s16> *trans_liquid, v3s16 nmin, v3s16 nmax) {
 884         bool isliquid, wasliquid, rare;
 885         v3s16 em  = vm->m_area.getExtent();
 886         rare = g_settings->getBool("liquid_finite");
 887         int rarecnt = 0;
 888
 889         for (s16 z = nmin.Z; z <= nmax.Z; z++) {
 890                 for (s16 x = nmin.X; x <= nmax.X; x++) {
 891                         wasliquid = true;
 892
 893                         u32 i = vm->m_area.index(x, nmax.Y, z);
 894                         for (s16 y = nmax.Y; y >= nmin.Y; y--) {
 895                                 isliquid = ndef->get(vm->m_data[i]).isLiquid();
 896
 897                                 // there was a change between liquid and nonliquid, add to queue. no need to add every with liquid_finite
 898                                 if (isliquid != wasliquid && (!rare || !(rarecnt++ % 36)))
 899                                         trans_liquid->push_back(v3s16(x, y, z));
 900
 901                                 wasliquid = isliquid;
 902                                 vm->m_area.add_y(em, i, -1);
 903                         }
 904                 }
 905         }
 906 }
 907
 908
 909 void Mapgen::setLighting(v3s16 nmin, v3s16 nmax, u8 light) {
 910         ScopeProfiler sp(g_profiler, "EmergeThread: mapgen lighting update", SPT_AVG);
 911         VoxelArea a(nmin, nmax);
 912
 913         for (int z = a.MinEdge.Z; z <= a.MaxEdge.Z; z++) {
 914                 for (int y = a.MinEdge.Y; y <= a.MaxEdge.Y; y++) {
 915                         u32 i = vm->m_area.index(a.MinEdge.X, y, z);
 916                         for (int x = a.MinEdge.X; x <= a.MaxEdge.X; x++, i++)
 917                                 vm->m_data[i].param1 = light;
 918                 }
 919         }
 920 }
 921
 922
 923 void Mapgen::lightSpread(VoxelArea &a, v3s16 p, u8 light) {
 924         if (light <= 1 || !a.contains(p))
 925                 return;
 926
 927         u32 vi = vm->m_area.index(p);
 928         MapNode &nn = vm->m_data[vi];
 929
 930         light--;
 931         // should probably compare masked, but doesn't seem to make a difference
 932         if (light <= nn.param1 || !ndef->get(nn).light_propagates)
 933                 return;
 934
 935         nn.param1 = light;
 936
 937         lightSpread(a, p + v3s16(0, 0, 1), light);
 938         lightSpread(a, p + v3s16(0, 1, 0), light);
 939         lightSpread(a, p + v3s16(1, 0, 0), light);
 940         lightSpread(a, p - v3s16(0, 0, 1), light);
 941         lightSpread(a, p - v3s16(0, 1, 0), light);
 942         lightSpread(a, p - v3s16(1, 0, 0), light);
 943 }
 944
 945
 946 void Mapgen::calcLighting(v3s16 nmin, v3s16 nmax) {
 947         VoxelArea a(nmin, nmax);
 948         bool block_is_underground = (water_level >= nmax.Y);
 949
 950         ScopeProfiler sp(g_profiler, "EmergeThread: mapgen lighting update", SPT_AVG);
 951         //TimeTaker t("updateLighting");
 952
 953         // first, send vertical rays of sunshine downward
 954         v3s16 em = vm->m_area.getExtent();
 955         for (int z = a.MinEdge.Z; z <= a.MaxEdge.Z; z++) {
 956                 for (int x = a.MinEdge.X; x <= a.MaxEdge.X; x++) {
 957                         // see if we can get a light value from the overtop
 958                         u32 i = vm->m_area.index(x, a.MaxEdge.Y + 1, z);
 959                         if (vm->m_data[i].getContent() == CONTENT_IGNORE) {
 960                                 if (block_is_underground)
 961                                         continue;
 962                         } else if ((vm->m_data[i].param1 & 0x0F) != LIGHT_SUN) {
 963                                 continue;
 964                         }
 965                         vm->m_area.add_y(em, i, -1);
 966
 967                         for (int y = a.MaxEdge.Y; y >= a.MinEdge.Y; y--) {
 968                                 MapNode &n = vm->m_data[i];
 969                                 if (!ndef->get(n).sunlight_propagates)
 970                                         break;
 971                                 n.param1 = LIGHT_SUN;
 972                                 vm->m_area.add_y(em, i, -1);
 973                         }
 974                 }
 975         }
 976
 977         // now spread the sunlight and light up any sources
 978         for (int z = a.MinEdge.Z; z <= a.MaxEdge.Z; z++) {
 979                 for (int y = a.MinEdge.Y; y <= a.MaxEdge.Y; y++) {
 980                         u32 i = vm->m_area.index(a.MinEdge.X, y, z);
 981                         for (int x = a.MinEdge.X; x <= a.MaxEdge.X; x++, i++) {
 982                                 MapNode &n = vm->m_data[i];
 983                                 if (n.getContent() == CONTENT_IGNORE ||
 984                                         !ndef->get(n).light_propagates)
 985                                         continue;
 986
 987                                 u8 light_produced = ndef->get(n).light_source & 0x0F;
 988                                 if (light_produced)
 989                                         n.param1 = light_produced;
 990
 991                                 u8 light = n.param1 & 0x0F;
 992                                 if (light) {
 993                                         lightSpread(a, v3s16(x,     y,     z + 1), light - 1);
 994                                         lightSpread(a, v3s16(x,     y + 1, z    ), light - 1);
 995                                         lightSpread(a, v3s16(x + 1, y,     z    ), light - 1);
 996                                         lightSpread(a, v3s16(x,     y,     z - 1), light - 1);
 997                                         lightSpread(a, v3s16(x,     y - 1, z    ), light - 1);
 998                                         lightSpread(a, v3s16(x - 1, y,     z    ), light - 1);
 999                                 }
1000                         }
1001                 }
1002         }
1003
1004         //printf("updateLighting: %dms\n", t.stop());
1005 }
1006
1007
1008 void Mapgen::calcLightingOld(v3s16 nmin, v3s16 nmax) {
1009         enum LightBank banks[2] = {LIGHTBANK_DAY, LIGHTBANK_NIGHT};
1010         VoxelArea a(nmin, nmax);
1011         bool block_is_underground = (water_level > nmax.Y);
1012         bool sunlight = !block_is_underground;
1013
1014         ScopeProfiler sp(g_profiler, "EmergeThread: mapgen lighting update", SPT_AVG);
1015
1016         for (int i = 0; i < 2; i++) {
1017                 enum LightBank bank = banks[i];
1018                 std::set<v3s16> light_sources;
1019                 std::map<v3s16, u8> unlight_from;
1020
1021                 voxalgo::clearLightAndCollectSources(*vm, a, bank, ndef,
1022                                                                                          light_sources, unlight_from);
1023                 voxalgo::propagateSunlight(*vm, a, sunlight, light_sources, ndef);
1024
1025                 vm->unspreadLight(bank, unlight_from, light_sources, ndef);
1026                 vm->spreadLight(bank, light_sources, ndef);
1027         }
1028 }
1029
1030
1031 //////////////////////// Mapgen V6 parameter read/write
1032
1033 bool MapgenV6Params::readParams(Settings *settings) {
1034         freq_desert = settings->getFloat("mgv6_freq_desert");
1035         freq_beach  = settings->getFloat("mgv6_freq_beach");
1036
1037         bool success =
1038                 settings->getNoiseParams("mgv6_np_terrain_base",   np_terrain_base)   &&
1039                 settings->getNoiseParams("mgv6_np_terrain_higher", np_terrain_higher) &&
1040                 settings->getNoiseParams("mgv6_np_steepness",      np_steepness)      &&
1041                 settings->getNoiseParams("mgv6_np_height_select",  np_height_select)  &&
1042                 settings->getNoiseParams("mgv6_np_mud",            np_mud)            &&
1043                 settings->getNoiseParams("mgv6_np_beach",          np_beach)          &&
1044                 settings->getNoiseParams("mgv6_np_biome",          np_biome)          &&
1045                 settings->getNoiseParams("mgv6_np_cave",           np_cave)           &&
1046                 settings->getNoiseParams("mgv6_np_humidity",       np_humidity)       &&
1047                 settings->getNoiseParams("mgv6_np_trees",          np_trees)          &&
1048                 settings->getNoiseParams("mgv6_np_apple_trees",    np_apple_trees);
1049         return success;
1050 }
1051
1052
1053 void MapgenV6Params::writeParams(Settings *settings) {
1054         settings->setFloat("mgv6_freq_desert", freq_desert);
1055         settings->setFloat("mgv6_freq_beach",  freq_beach);
1056
1057         settings->setNoiseParams("mgv6_np_terrain_base",   np_terrain_base);
1058         settings->setNoiseParams("mgv6_np_terrain_higher", np_terrain_higher);
1059         settings->setNoiseParams("mgv6_np_steepness",      np_steepness);
1060         settings->setNoiseParams("mgv6_np_height_select",  np_height_select);
1061         settings->setNoiseParams("mgv6_np_mud",            np_mud);
1062         settings->setNoiseParams("mgv6_np_beach",          np_beach);
1063         settings->setNoiseParams("mgv6_np_biome",          np_biome);
1064         settings->setNoiseParams("mgv6_np_cave",           np_cave);
1065         settings->setNoiseParams("mgv6_np_humidity",       np_humidity);
1066         settings->setNoiseParams("mgv6_np_trees",          np_trees);
1067         settings->setNoiseParams("mgv6_np_apple_trees",    np_apple_trees);
1068 }
1069
1070
1071 bool MapgenV7Params::readParams(Settings *settings) {
1072         bool success =
1073                 settings->getNoiseParams("mgv7_np_terrain_base",    np_terrain_base)    &&
1074                 settings->getNoiseParams("mgv7_np_terrain_alt",     np_terrain_alt)     &&
1075                 settings->getNoiseParams("mgv7_np_terrain_persist", np_terrain_persist) &&
1076                 settings->getNoiseParams("mgv7_np_height_select",   np_height_select)   &&
1077                 settings->getNoiseParams("mgv7_np_filler_depth",    np_filler_depth)    &&
1078                 settings->getNoiseParams("mgv7_np_mount_height",    np_mount_height)    &&
1079                 settings->getNoiseParams("mgv7_np_ridge_uwater",    np_ridge_uwater)    &&
1080                 settings->getNoiseParams("mgv7_np_mountain",        np_mountain)        &&
1081                 settings->getNoiseParams("mgv7_np_ridge",           np_ridge);
1082         return success;
1083 }
1084
1085
1086 void MapgenV7Params::writeParams(Settings *settings) {
1087         settings->setNoiseParams("mgv7_np_terrain_base",    np_terrain_base);
1088         settings->setNoiseParams("mgv7_np_terrain_alt",     np_terrain_alt);
1089         settings->setNoiseParams("mgv7_np_terrain_persist", np_terrain_persist);
1090         settings->setNoiseParams("mgv7_np_height_select",   np_height_select);
1091         settings->setNoiseParams("mgv7_np_filler_depth",    np_filler_depth);
1092         settings->setNoiseParams("mgv7_np_mount_height",    np_mount_height);
1093         settings->setNoiseParams("mgv7_np_ridge_uwater",    np_ridge_uwater);
1094         settings->setNoiseParams("mgv7_np_mountain",        np_mountain);
1095         settings->setNoiseParams("mgv7_np_ridge",           np_ridge);
1096 }
1097
1098
1099 /////////////////////////////////// legacy static functions for farmesh
1100
1101 s16 Mapgen::find_ground_level_from_noise(u64 seed, v2s16 p2d, s16 precision) {
1102         //just need to return something
1103         s16 level = 5;
1104         return level;
1105 }
1106
1107
1108 bool Mapgen::get_have_beach(u64 seed, v2s16 p2d) {
1109         double sandnoise = noise2d_perlin(
1110                                 0.2+(float)p2d.X/250, 0.7+(float)p2d.Y/250,
1111                                 seed+59420, 3, 0.50);
1112
1113         return (sandnoise > 0.15);
1114 }
1115
1116
1117 double Mapgen::tree_amount_2d(u64 seed, v2s16 p) {
1118         double noise = noise2d_perlin(
1119                         0.5+(float)p.X/125, 0.5+(float)p.Y/125,
1120                         seed+2, 4, 0.66);
1121         double zeroval = -0.39;
1122         if(noise < zeroval)
1123                 return 0;
1124         else
1125                 return 0.04 * (noise-zeroval) / (1.0-zeroval);
1126 }