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         if (c_place_on == CONTENT_IGNORE)
 241                 c_place_on = ndef->getId(place_on_name);
 242 }
 243
 244
 245 void Decoration::placeDeco(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
 246         PseudoRandom ps(blockseed + 53);
 247         int carea_size = nmax.X - nmin.X + 1;
 248
 249         // Divide area into parts
 250         if (carea_size % sidelen) {
 251                 errorstream << "Decoration::placeDeco: chunk size is not divisible by "
 252                         "sidelen; setting sidelen to " << carea_size << std::endl;
 253                 sidelen = carea_size;
 254         }
 255
 256         s16 divlen = carea_size / sidelen;
 257         int area = sidelen * sidelen;
 258
 259         for (s16 z0 = 0; z0 < divlen; z0++)
 260         for (s16 x0 = 0; x0 < divlen; x0++) {
 261                 v2s16 p2d_center( // Center position of part of division
 262                         nmin.X + sidelen / 2 + sidelen * x0,
 263                         nmin.Z + sidelen / 2 + sidelen * z0
 264                 );
 265                 v2s16 p2d_min( // Minimum edge of part of division
 266                         nmin.X + sidelen * x0,
 267                         nmin.Z + sidelen * z0
 268                 );
 269                 v2s16 p2d_max( // Maximum edge of part of division
 270                         nmin.X + sidelen + sidelen * x0 - 1,
 271                         nmin.Z + sidelen + sidelen * z0 - 1
 272                 );
 273
 274                 // Amount of decorations
 275                 float nval = np ?
 276                         NoisePerlin2D(np, p2d_center.X, p2d_center.Y, mapseed) :
 277                         fill_ratio;
 278                 u32 deco_count = area * MYMAX(nval, 0.f);
 279
 280                 for (u32 i = 0; i < deco_count; i++) {
 281                         s16 x = ps.range(p2d_min.X, p2d_max.X);
 282                         s16 z = ps.range(p2d_min.Y, p2d_max.Y);
 283
 284                         int mapindex = carea_size * (z - nmin.Z) + (x - nmin.X);
 285
 286                         s16 y = mg->heightmap ?
 287                                         mg->heightmap[mapindex] :
 288                                         mg->findGroundLevel(v2s16(x, z), nmin.Y, nmax.Y);
 289
 290                         if (y < nmin.Y || y > nmax.Y)
 291                                 continue;
 292
 293                         int height = getHeight();
 294                         int max_y = nmax.Y + MAP_BLOCKSIZE;
 295                         if (y + 1 + height > max_y) {
 296                                 continue;
 297 #if 0
 298                                 printf("Decoration at (%d %d %d) cut off\n", x, y, z);
 299                                 //add to queue
 300                                 JMutexAutoLock cutofflock(cutoff_mutex);
 301                                 cutoffs.push_back(CutoffData(x, y, z, height));
 302 #endif
 303                         }
 304
 305                         if (mg->biomemap) {
 306                                 std::set<u8>::iterator iter;
 307
 308                                 if (biomes.size()) {
 309                                         iter = biomes.find(mg->biomemap[mapindex]);
 310                                         if (iter == biomes.end())
 311                                                 continue;
 312                                 }
 313                         }
 314
 315                         generate(mg, &ps, max_y, v3s16(x, y, z));
 316                 }
 317         }
 318 }
 319
 320
 321 #if 0
 322 void Decoration::placeCutoffs(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
 323         PseudoRandom pr(blockseed + 53);
 324         std::vector<CutoffData> handled_cutoffs;
 325
 326         // Copy over the cutoffs we're interested in so we don't needlessly hold a lock
 327         {
 328                 JMutexAutoLock cutofflock(cutoff_mutex);
 329                 for (std::list<CutoffData>::iterator i = cutoffs.begin();
 330                         i != cutoffs.end(); ++i) {
 331                         CutoffData cutoff = *i;
 332                         v3s16 p    = cutoff.p;
 333                         s16 height = cutoff.height;
 334                         if (p.X < nmin.X || p.X > nmax.X ||
 335                                 p.Z < nmin.Z || p.Z > nmax.Z)
 336                                 continue;
 337                         if (p.Y + height < nmin.Y || p.Y > nmax.Y)
 338                                 continue;
 339
 340                         handled_cutoffs.push_back(cutoff);
 341                 }
 342         }
 343
 344         // Generate the cutoffs
 345         for (size_t i = 0; i != handled_cutoffs.size(); i++) {
 346                 v3s16 p    = handled_cutoffs[i].p;
 347                 s16 height = handled_cutoffs[i].height;
 348
 349                 if (p.Y + height > nmax.Y) {
 350                         //printf("Decoration at (%d %d %d) cut off again!\n", p.X, p.Y, p.Z);
 351                         cuttoffs.push_back(v3s16(p.X, p.Y, p.Z));
 352                 }
 353
 354                 generate(mg, &pr, nmax.Y, nmin.Y - p.Y, v3s16(p.X, nmin.Y, p.Z));
 355         }
 356
 357         // Remove cutoffs that were handled from the cutoff list
 358         {
 359                 JMutexAutoLock cutofflock(cutoff_mutex);
 360                 for (std::list<CutoffData>::iterator i = cutoffs.begin();
 361                         i != cutoffs.end(); ++i) {
 362
 363                         for (size_t j = 0; j != handled_cutoffs.size(); j++) {
 364                                 CutoffData coff = *i;
 365                                 if (coff.p == handled_cutoffs[j].p)
 366                                         i = cutoffs.erase(i);
 367                         }
 368                 }
 369         }
 370 }
 371 #endif
 372
 373
 374 ///////////////////////////////////////////////////////////////////////////////
 375
 376
 377 void DecoSimple::resolveNodeNames(INodeDefManager *ndef) {
 378         Decoration::resolveNodeNames(ndef);
 379
 380         if (c_deco == CONTENT_IGNORE) {
 381                 c_deco = ndef->getId(deco_name);
 382                 if (c_deco == CONTENT_IGNORE) {
 383                         errorstream << "DecoSimple::resolveNodeNames: decoration node '"
 384                                 << deco_name << "' not defined" << std::endl;
 385                         c_deco = CONTENT_AIR;
 386                 }
 387         }
 388         if (c_spawnby == CONTENT_IGNORE) {
 389                 c_spawnby = ndef->getId(spawnby_name);
 390                 if (c_spawnby == CONTENT_IGNORE) {
 391                         errorstream << "DecoSimple::resolveNodeNames: spawnby node '"
 392                                 << deco_name << "' not defined" << std::endl;
 393                         nspawnby = -1;
 394                         c_spawnby = CONTENT_AIR;
 395                 }
 396         }
 397
 398         if (c_decolist.size())
 399                 return;
 400
 401         for (size_t i = 0; i != decolist_names.size(); i++) {
 402                 content_t c = ndef->getId(decolist_names[i]);
 403                 if (c == CONTENT_IGNORE) {
 404                         errorstream << "DecoSimple::resolveNodeNames: decolist node '"
 405                                 << decolist_names[i] << "' not defined" << std::endl;
 406                         c = CONTENT_AIR;
 407                 }
 408                 c_decolist.push_back(c);
 409         }
 410 }
 411
 412
 413 void DecoSimple::generate(Mapgen *mg, PseudoRandom *pr, s16 max_y, v3s16 p) {
 414         ManualMapVoxelManipulator *vm = mg->vm;
 415
 416         u32 vi = vm->m_area.index(p);
 417         if (vm->m_data[vi].getContent() != c_place_on &&
 418                 c_place_on != CONTENT_IGNORE)
 419                 return;
 420
 421         if (nspawnby != -1) {
 422                 int nneighs = 0;
 423                 v3s16 dirs[8] = { // a Moore neighborhood
 424                         v3s16( 0, 0,  1),
 425                         v3s16( 0, 0, -1),
 426                         v3s16( 1, 0,  0),
 427                         v3s16(-1, 0,  0),
 428                         v3s16( 1, 0,  1),
 429                         v3s16(-1, 0,  1),
 430                         v3s16(-1, 0, -1),
 431                         v3s16( 1, 0, -1)
 432                 };
 433
 434                 for (int i = 0; i != 8; i++) {
 435                         u32 index = vm->m_area.index(p + dirs[i]);
 436                         if (vm->m_area.contains(index) &&
 437                                 vm->m_data[index].getContent() == c_spawnby)
 438                                 nneighs++;
 439                 }
 440
 441                 if (nneighs < nspawnby)
 442                         return;
 443         }
 444
 445         size_t ndecos = c_decolist.size();
 446         content_t c_place = ndecos ? c_decolist[pr->range(0, ndecos - 1)] : c_deco;
 447
 448         s16 height = (deco_height_max > 0) ?
 449                 pr->range(deco_height, deco_height_max) : deco_height;
 450
 451         height = MYMIN(height, max_y - p.Y);
 452
 453         v3s16 em = vm->m_area.getExtent();
 454         for (int i = 0; i < height; i++) {
 455                 vm->m_area.add_y(em, vi, 1);
 456
 457                 content_t c = vm->m_data[vi].getContent();
 458                 if (c != CONTENT_AIR && c != CONTENT_IGNORE)
 459                         break;
 460
 461                 vm->m_data[vi] = MapNode(c_place);
 462         }
 463 }
 464
 465
 466 int DecoSimple::getHeight() {
 467         return (deco_height_max > 0) ? deco_height_max : deco_height;
 468 }
 469
 470
 471 std::string DecoSimple::getName() {
 472         return deco_name;
 473 }
 474
 475
 476 ///////////////////////////////////////////////////////////////////////////////
 477
 478
 479 DecoSchematic::DecoSchematic() {
 480         node_names = NULL;
 481         schematic  = NULL;
 482         flags      = 0;
 483         size       = v3s16(0, 0, 0);
 484 }
 485
 486
 487 DecoSchematic::~DecoSchematic() {
 488         delete node_names;
 489         delete []schematic;
 490 }
 491
 492
 493 void DecoSchematic::resolveNodeNames(INodeDefManager *ndef) {
 494         Decoration::resolveNodeNames(ndef);
 495
 496         if (filename.empty())
 497                 return;
 498
 499         if (!node_names) {
 500                 errorstream << "DecoSchematic::resolveNodeNames: node name list was "
 501                         "not created" << std::endl;
 502                 return;
 503         }
 504
 505         for (size_t i = 0; i != node_names->size(); i++) {
 506                 content_t c = ndef->getId(node_names->at(i));
 507                 if (c == CONTENT_IGNORE) {
 508                         errorstream << "DecoSchematic::resolveNodeNames: node '"
 509                                 << node_names->at(i) << "' not defined" << std::endl;
 510                         c = CONTENT_AIR;
 511                 }
 512                 c_nodes.push_back(c);
 513         }
 514
 515         for (int i = 0; i != size.X * size.Y * size.Z; i++)
 516                 schematic[i].setContent(c_nodes[schematic[i].getContent()]);
 517
 518         delete node_names;
 519         node_names = NULL;
 520 }
 521
 522
 523 void DecoSchematic::generate(Mapgen *mg, PseudoRandom *pr, s16 max_y, v3s16 p) {
 524         ManualMapVoxelManipulator *vm = mg->vm;
 525
 526         if (flags & DECO_PLACE_CENTER_X)
 527                 p.X -= (size.X + 1) / 2;
 528         if (flags & DECO_PLACE_CENTER_Y)
 529                 p.Y -= (size.Y + 1) / 2;
 530         if (flags & DECO_PLACE_CENTER_Z)
 531                 p.Z -= (size.Z + 1) / 2;
 532
 533         u32 vi = vm->m_area.index(p);
 534         if (vm->m_data[vi].getContent() != c_place_on &&
 535                 c_place_on != CONTENT_IGNORE)
 536                 return;
 537
 538         Rotation rot = (rotation == ROTATE_RAND) ?
 539                 (Rotation)pr->range(ROTATE_0, ROTATE_270) : rotation;
 540
 541         blitToVManip(p, vm, rot, false);
 542 }
 543
 544
 545 int DecoSchematic::getHeight() {
 546         return size.Y;
 547 }
 548
 549
 550 std::string DecoSchematic::getName() {
 551         return filename;
 552 }
 553
 554
 555 void DecoSchematic::blitToVManip(v3s16 p, ManualMapVoxelManipulator *vm,
 556                                                                 int rot, bool force_placement) {
 557         int xstride = 1;
 558         int ystride = size.X;
 559         int zstride = size.X * size.Y;
 560
 561         s16 sx = size.X;
 562         s16 sy = size.Y;
 563         s16 sz = size.Z;
 564
 565         int i_start, i_step_x, i_step_z;
 566         switch (rot) {
 567                 case ROTATE_90:
 568                         i_start  = sx - 1;
 569                         i_step_x = zstride;
 570                         i_step_z = -xstride;
 571                         SWAP(s16, sx, sz);
 572                         break;
 573                 case ROTATE_180:
 574                         i_start  = zstride * (sz - 1) + sx - 1;
 575                         i_step_x = -xstride;
 576                         i_step_z = -zstride;
 577                         break;
 578                 case ROTATE_270:
 579                         i_start  = zstride * (sz - 1);
 580                         i_step_x = -zstride;
 581                         i_step_z = xstride;
 582                         SWAP(s16, sx, sz);
 583                         break;
 584                 default:
 585                         i_start  = 0;
 586                         i_step_x = xstride;
 587                         i_step_z = zstride;
 588         }
 589
 590         for (s16 z = 0; z != sz; z++)
 591         for (s16 y = 0; y != sy; y++) {
 592                 u32 i = z * i_step_z + y * ystride + i_start;
 593                 for (s16 x = 0; x != sx; x++, i += i_step_x) {
 594                         u32 vi = vm->m_area.index(p.X + x, p.Y + y, p.Z + z);
 595                         if (!vm->m_area.contains(vi))
 596                                 continue;
 597
 598                         if (schematic[i].getContent() == CONTENT_IGNORE)
 599                                 continue;
 600
 601                         if (!force_placement) {
 602                                 content_t c = vm->m_data[vi].getContent();
 603                                 if (c != CONTENT_AIR && c != CONTENT_IGNORE)
 604                                         continue;
 605                         }
 606
 607                         if (schematic[i].param1 && myrand_range(1, 256) > schematic[i].param1)
 608                                 continue;
 609
 610                         vm->m_data[vi] = schematic[i];
 611                         vm->m_data[vi].param1 = 0;
 612                 }
 613         }
 614 }
 615
 616
 617 void DecoSchematic::placeStructure(Map *map, v3s16 p) {
 618         assert(schematic != NULL);
 619         ManualMapVoxelManipulator *vm = new ManualMapVoxelManipulator(map);
 620
 621         Rotation rot = (rotation == ROTATE_RAND) ?
 622                 (Rotation)myrand_range(ROTATE_0, ROTATE_270) : rotation;
 623
 624         v3s16 s = (rot == ROTATE_90 || rot == ROTATE_270) ?
 625                                 v3s16(size.Z, size.Y, size.X) : size;
 626
 627         if (flags & DECO_PLACE_CENTER_X)
 628                 p.X -= (s.X + 1) / 2;
 629         if (flags & DECO_PLACE_CENTER_Y)
 630                 p.Y -= (s.Y + 1) / 2;
 631         if (flags & DECO_PLACE_CENTER_Z)
 632                 p.Z -= (s.Z + 1) / 2;
 633
 634         v3s16 bp1 = getNodeBlockPos(p);
 635         v3s16 bp2 = getNodeBlockPos(p + s - v3s16(1,1,1));
 636         vm->initialEmerge(bp1, bp2);
 637
 638         blitToVManip(p, vm, rot, true);
 639
 640         std::map<v3s16, MapBlock *> lighting_modified_blocks;
 641         std::map<v3s16, MapBlock *> modified_blocks;
 642         vm->blitBackAll(&modified_blocks);
 643
 644         // TODO: Optimize this by using Mapgen::calcLighting() instead
 645         lighting_modified_blocks.insert(modified_blocks.begin(), modified_blocks.end());
 646         map->updateLighting(lighting_modified_blocks, modified_blocks);
 647
 648         MapEditEvent event;
 649         event.type = MEET_OTHER;
 650         for (std::map<v3s16, MapBlock *>::iterator
 651                 it = modified_blocks.begin();
 652                 it != modified_blocks.end(); ++it)
 653                 event.modified_blocks.insert(it->first);
 654
 655         map->dispatchEvent(&event);
 656 }
 657
 658
 659 bool DecoSchematic::loadSchematicFile() {
 660         std::ifstream is(filename.c_str(), std::ios_base::binary);
 661
 662         u32 signature = readU32(is);
 663         if (signature != 'MTSM') {
 664                 errorstream << "loadSchematicFile: invalid schematic "
 665                         "file" << std::endl;
 666                 return false;
 667         }
 668
 669         u16 version = readU16(is);
 670         if (version != 1) {
 671                 errorstream << "loadSchematicFile: unsupported schematic "
 672                         "file version" << std::endl;
 673                 return false;
 674         }
 675
 676         size = readV3S16(is);
 677         int nodecount = size.X * size.Y * size.Z;
 678
 679         u16 nidmapcount = readU16(is);
 680
 681         node_names = new std::vector<std::string>;
 682         for (int i = 0; i != nidmapcount; i++) {
 683                 std::string name = deSerializeString(is);
 684                 node_names->push_back(name);
 685         }
 686
 687         delete schematic;
 688         schematic = new MapNode[nodecount];
 689         MapNode::deSerializeBulk(is, SER_FMT_VER_HIGHEST, schematic,
 690                                 nodecount, 2, 2, true);
 691
 692         return true;
 693 }
 694
 695
 696 /*
 697         Minetest Schematic File Format
 698
 699         All values are stored in big-endian byte order.
 700         [u32] signature: 'MTSM'
 701         [u16] version: 1
 702         [u16] size X
 703         [u16] size Y
 704         [u16] size Z
 705         [Name-ID table] Name ID Mapping Table
 706                 [u16] name-id count
 707                 For each name-id mapping:
 708                         [u16] name length
 709                         [u8[]] name
 710         ZLib deflated {
 711         For each node in schematic:  (for z, y, x)
 712                 [u16] content
 713         For each node in schematic:
 714                 [u8] probability of occurance (param1)
 715         For each node in schematic:
 716                 [u8] param2
 717         }
 718 */
 719 void DecoSchematic::saveSchematicFile(INodeDefManager *ndef) {
 720         std::ofstream os(filename.c_str(), std::ios_base::binary);
 721
 722         writeU32(os, 'MTSM'); // signature
 723         writeU16(os, 1);      // version
 724         writeV3S16(os, size); // schematic size
 725
 726         std::vector<content_t> usednodes;
 727         int nodecount = size.X * size.Y * size.Z;
 728         build_nnlist_and_update_ids(schematic, nodecount, &usednodes);
 729
 730         u16 numids = usednodes.size();
 731         writeU16(os, numids); // name count
 732         for (int i = 0; i != numids; i++)
 733                 os << serializeString(ndef->get(usednodes[i]).name); // node names
 734
 735         // compressed bulk node data
 736         MapNode::serializeBulk(os, SER_FMT_VER_HIGHEST, schematic,
 737                                 nodecount, 2, 2, true);
 738 }
 739
 740
 741 void build_nnlist_and_update_ids(MapNode *nodes, u32 nodecount,
 742                                                 std::vector<content_t> *usednodes) {
 743         std::map<content_t, content_t> nodeidmap;
 744         content_t numids = 0;
 745
 746         for (u32 i = 0; i != nodecount; i++) {
 747                 content_t id;
 748                 content_t c = nodes[i].getContent();
 749
 750                 std::map<content_t, content_t>::const_iterator it = nodeidmap.find(c);
 751                 if (it == nodeidmap.end()) {
 752                         id = numids;
 753                         numids++;
 754
 755                         usednodes->push_back(c);
 756                         nodeidmap.insert(std::make_pair(c, id));
 757                 } else {
 758                         id = it->second;
 759                 }
 760                 nodes[i].setContent(id);
 761         }
 762 }
 763
 764
 765 bool DecoSchematic::getSchematicFromMap(Map *map, v3s16 p1, v3s16 p2) {
 766         ManualMapVoxelManipulator *vm = new ManualMapVoxelManipulator(map);
 767
 768         v3s16 bp1 = getNodeBlockPos(p1);
 769         v3s16 bp2 = getNodeBlockPos(p2);
 770         vm->initialEmerge(bp1, bp2);
 771
 772         size = p2 - p1 + 1;
 773         schematic = new MapNode[size.X * size.Y * size.Z];
 774
 775         u32 i = 0;
 776         for (s16 z = p1.Z; z <= p2.Z; z++)
 777         for (s16 y = p1.Y; y <= p2.Y; y++) {
 778                 u32 vi = vm->m_area.index(p1.X, y, z);
 779                 for (s16 x = p1.X; x <= p2.X; x++, i++, vi++) {
 780                         schematic[i] = vm->m_data[vi];
 781                         schematic[i].param1 = 0;
 782                 }
 783         }
 784
 785         delete vm;
 786         return true;
 787 }
 788
 789
 790 void DecoSchematic::applyProbabilities(std::vector<std::pair<v3s16, s16> > *plist, v3s16 p0) {
 791         for (size_t i = 0; i != plist->size(); i++) {
 792                 v3s16 p = (*plist)[i].first - p0;
 793                 int index = p.Z * (size.Y * size.X) + p.Y * size.X + p.X;
 794                 if (index < size.Z * size.Y * size.X) {
 795                         s16 prob = (*plist)[i].second;
 796                         if (prob != -1)
 797                                 schematic[index].param1 = prob;
 798                         else
 799                                 schematic[index].setContent(CONTENT_IGNORE);
 800                 }
 801         }
 802 }
 803
 804
 805 ///////////////////////////////////////////////////////////////////////////////
 806
 807
 808 Mapgen::Mapgen() {
 809         seed        = 0;
 810         water_level = 0;
 811         generating  = false;
 812         id          = -1;
 813         vm          = NULL;
 814         ndef        = NULL;
 815         heightmap   = NULL;
 816         biomemap    = NULL;
 817 }
 818
 819
 820 // Returns Y one under area minimum if not found
 821 s16 Mapgen::findGroundLevelFull(v2s16 p2d) {
 822         v3s16 em = vm->m_area.getExtent();
 823         s16 y_nodes_max = vm->m_area.MaxEdge.Y;
 824         s16 y_nodes_min = vm->m_area.MinEdge.Y;
 825         u32 i = vm->m_area.index(p2d.X, y_nodes_max, p2d.Y);
 826         s16 y;
 827
 828         for (y = y_nodes_max; y >= y_nodes_min; y--) {
 829                 MapNode &n = vm->m_data[i];
 830                 if (ndef->get(n).walkable)
 831                         break;
 832
 833                 vm->m_area.add_y(em, i, -1);
 834         }
 835         return (y >= y_nodes_min) ? y : y_nodes_min - 1;
 836 }
 837
 838
 839 s16 Mapgen::findGroundLevel(v2s16 p2d, s16 ymin, s16 ymax) {
 840         v3s16 em = vm->m_area.getExtent();
 841         u32 i = vm->m_area.index(p2d.X, ymax, p2d.Y);
 842         s16 y;
 843
 844         for (y = ymax; y >= ymin; y--) {
 845                 MapNode &n = vm->m_data[i];
 846                 if (ndef->get(n).walkable)
 847                         break;
 848
 849                 vm->m_area.add_y(em, i, -1);
 850         }
 851         return y;
 852 }
 853
 854
 855 void Mapgen::updateHeightmap(v3s16 nmin, v3s16 nmax) {
 856         if (!heightmap)
 857                 return;
 858
 859         //TimeTaker t("Mapgen::updateHeightmap", NULL, PRECISION_MICRO);
 860         int index = 0;
 861         for (s16 z = nmin.Z; z <= nmax.Z; z++) {
 862                 for (s16 x = nmin.X; x <= nmax.X; x++) {
 863                         s16 y = findGroundLevel(v2s16(x, z), nmin.Y, nmax.Y);
 864                         heightmap[index++] = y;
 865                 }
 866         }
 867         //printf("updateHeightmap: %dus\n", t.stop());
 868 }
 869
 870
 871 void Mapgen::updateLiquid(UniqueQueue<v3s16> *trans_liquid, v3s16 nmin, v3s16 nmax) {
 872         bool isliquid, wasliquid, rare;
 873         v3s16 em  = vm->m_area.getExtent();
 874         rare = g_settings->getBool("liquid_finite");
 875         int rarecnt = 0;
 876
 877         for (s16 z = nmin.Z; z <= nmax.Z; z++) {
 878                 for (s16 x = nmin.X; x <= nmax.X; x++) {
 879                         wasliquid = true;
 880
 881                         u32 i = vm->m_area.index(x, nmax.Y, z);
 882                         for (s16 y = nmax.Y; y >= nmin.Y; y--) {
 883                                 isliquid = ndef->get(vm->m_data[i]).isLiquid();
 884
 885                                 // there was a change between liquid and nonliquid, add to queue. no need to add every with liquid_finite
 886                                 if (isliquid != wasliquid && (!rare || !(rarecnt++ % 36)))
 887                                         trans_liquid->push_back(v3s16(x, y, z));
 888
 889                                 wasliquid = isliquid;
 890                                 vm->m_area.add_y(em, i, -1);
 891                         }
 892                 }
 893         }
 894 }
 895
 896
 897 void Mapgen::setLighting(v3s16 nmin, v3s16 nmax, u8 light) {
 898         ScopeProfiler sp(g_profiler, "EmergeThread: mapgen lighting update", SPT_AVG);
 899         VoxelArea a(nmin, nmax);
 900
 901         for (int z = a.MinEdge.Z; z <= a.MaxEdge.Z; z++) {
 902                 for (int y = a.MinEdge.Y; y <= a.MaxEdge.Y; y++) {
 903                         u32 i = vm->m_area.index(a.MinEdge.X, y, z);
 904                         for (int x = a.MinEdge.X; x <= a.MaxEdge.X; x++, i++)
 905                                 vm->m_data[i].param1 = light;
 906                 }
 907         }
 908 }
 909
 910
 911 void Mapgen::lightSpread(VoxelArea &a, v3s16 p, u8 light) {
 912         if (light <= 1 || !a.contains(p))
 913                 return;
 914
 915         u32 vi = vm->m_area.index(p);
 916         MapNode &nn = vm->m_data[vi];
 917
 918         light--;
 919         // should probably compare masked, but doesn't seem to make a difference
 920         if (light <= nn.param1 || !ndef->get(nn).light_propagates)
 921                 return;
 922
 923         nn.param1 = light;
 924
 925         lightSpread(a, p + v3s16(0, 0, 1), light);
 926         lightSpread(a, p + v3s16(0, 1, 0), light);
 927         lightSpread(a, p + v3s16(1, 0, 0), light);
 928         lightSpread(a, p - v3s16(0, 0, 1), light);
 929         lightSpread(a, p - v3s16(0, 1, 0), light);
 930         lightSpread(a, p - v3s16(1, 0, 0), light);
 931 }
 932
 933
 934 void Mapgen::calcLighting(v3s16 nmin, v3s16 nmax) {
 935         VoxelArea a(nmin, nmax);
 936         bool block_is_underground = (water_level >= nmax.Y);
 937
 938         ScopeProfiler sp(g_profiler, "EmergeThread: mapgen lighting update", SPT_AVG);
 939         //TimeTaker t("updateLighting");
 940
 941         // first, send vertical rays of sunshine downward
 942         v3s16 em = vm->m_area.getExtent();
 943         for (int z = a.MinEdge.Z; z <= a.MaxEdge.Z; z++) {
 944                 for (int x = a.MinEdge.X; x <= a.MaxEdge.X; x++) {
 945                         // see if we can get a light value from the overtop
 946                         u32 i = vm->m_area.index(x, a.MaxEdge.Y + 1, z);
 947                         if (vm->m_data[i].getContent() == CONTENT_IGNORE) {
 948                                 if (block_is_underground)
 949                                         continue;
 950                         } else if ((vm->m_data[i].param1 & 0x0F) != LIGHT_SUN) {
 951                                 continue;
 952                         }
 953                         vm->m_area.add_y(em, i, -1);
 954
 955                         for (int y = a.MaxEdge.Y; y >= a.MinEdge.Y; y--) {
 956                                 MapNode &n = vm->m_data[i];
 957                                 if (!ndef->get(n).sunlight_propagates)
 958                                         break;
 959                                 n.param1 = LIGHT_SUN;
 960                                 vm->m_area.add_y(em, i, -1);
 961                         }
 962                 }
 963         }
 964
 965         // now spread the sunlight and light up any sources
 966         for (int z = a.MinEdge.Z; z <= a.MaxEdge.Z; z++) {
 967                 for (int y = a.MinEdge.Y; y <= a.MaxEdge.Y; y++) {
 968                         u32 i = vm->m_area.index(a.MinEdge.X, y, z);
 969                         for (int x = a.MinEdge.X; x <= a.MaxEdge.X; x++, i++) {
 970                                 MapNode &n = vm->m_data[i];
 971                                 if (n.getContent() == CONTENT_IGNORE ||
 972                                         !ndef->get(n).light_propagates)
 973                                         continue;
 974
 975                                 u8 light_produced = ndef->get(n).light_source & 0x0F;
 976                                 if (light_produced)
 977                                         n.param1 = light_produced;
 978
 979                                 u8 light = n.param1 & 0x0F;
 980                                 if (light) {
 981                                         lightSpread(a, v3s16(x,     y,     z + 1), light - 1);
 982                                         lightSpread(a, v3s16(x,     y + 1, z    ), light - 1);
 983                                         lightSpread(a, v3s16(x + 1, y,     z    ), light - 1);
 984                                         lightSpread(a, v3s16(x,     y,     z - 1), light - 1);
 985                                         lightSpread(a, v3s16(x,     y - 1, z    ), light - 1);
 986                                         lightSpread(a, v3s16(x - 1, y,     z    ), light - 1);
 987                                 }
 988                         }
 989                 }
 990         }
 991
 992         //printf("updateLighting: %dms\n", t.stop());
 993 }
 994
 995
 996 void Mapgen::calcLightingOld(v3s16 nmin, v3s16 nmax) {
 997         enum LightBank banks[2] = {LIGHTBANK_DAY, LIGHTBANK_NIGHT};
 998         VoxelArea a(nmin, nmax);
 999         bool block_is_underground = (water_level > nmax.Y);
1000         bool sunlight = !block_is_underground;
1001
1002         ScopeProfiler sp(g_profiler, "EmergeThread: mapgen lighting update", SPT_AVG);
1003
1004         for (int i = 0; i < 2; i++) {
1005                 enum LightBank bank = banks[i];
1006                 std::set<v3s16> light_sources;
1007                 std::map<v3s16, u8> unlight_from;
1008
1009                 voxalgo::clearLightAndCollectSources(*vm, a, bank, ndef,
1010                                                                                          light_sources, unlight_from);
1011                 voxalgo::propagateSunlight(*vm, a, sunlight, light_sources, ndef);
1012
1013                 vm->unspreadLight(bank, unlight_from, light_sources, ndef);
1014                 vm->spreadLight(bank, light_sources, ndef);
1015         }
1016 }
1017
1018
1019 //////////////////////// Mapgen V6 parameter read/write
1020
1021 bool MapgenV6Params::readParams(Settings *settings) {
1022         freq_desert = settings->getFloat("mgv6_freq_desert");
1023         freq_beach  = settings->getFloat("mgv6_freq_beach");
1024
1025         bool success =
1026                 settings->getNoiseParams("mgv6_np_terrain_base",   np_terrain_base)   &&
1027                 settings->getNoiseParams("mgv6_np_terrain_higher", np_terrain_higher) &&
1028                 settings->getNoiseParams("mgv6_np_steepness",      np_steepness)      &&
1029                 settings->getNoiseParams("mgv6_np_height_select",  np_height_select)  &&
1030                 settings->getNoiseParams("mgv6_np_mud",            np_mud)            &&
1031                 settings->getNoiseParams("mgv6_np_beach",          np_beach)          &&
1032                 settings->getNoiseParams("mgv6_np_biome",          np_biome)          &&
1033                 settings->getNoiseParams("mgv6_np_cave",           np_cave)           &&
1034                 settings->getNoiseParams("mgv6_np_humidity",       np_humidity)       &&
1035                 settings->getNoiseParams("mgv6_np_trees",          np_trees)          &&
1036                 settings->getNoiseParams("mgv6_np_apple_trees",    np_apple_trees);
1037         return success;
1038 }
1039
1040
1041 void MapgenV6Params::writeParams(Settings *settings) {
1042         settings->setFloat("mgv6_freq_desert", freq_desert);
1043         settings->setFloat("mgv6_freq_beach",  freq_beach);
1044
1045         settings->setNoiseParams("mgv6_np_terrain_base",   np_terrain_base);
1046         settings->setNoiseParams("mgv6_np_terrain_higher", np_terrain_higher);
1047         settings->setNoiseParams("mgv6_np_steepness",      np_steepness);
1048         settings->setNoiseParams("mgv6_np_height_select",  np_height_select);
1049         settings->setNoiseParams("mgv6_np_mud",            np_mud);
1050         settings->setNoiseParams("mgv6_np_beach",          np_beach);
1051         settings->setNoiseParams("mgv6_np_biome",          np_biome);
1052         settings->setNoiseParams("mgv6_np_cave",           np_cave);
1053         settings->setNoiseParams("mgv6_np_humidity",       np_humidity);
1054         settings->setNoiseParams("mgv6_np_trees",          np_trees);
1055         settings->setNoiseParams("mgv6_np_apple_trees",    np_apple_trees);
1056 }
1057
1058
1059 bool MapgenV7Params::readParams(Settings *settings) {
1060         bool success =
1061                 settings->getNoiseParams("mgv7_np_terrain_base",    np_terrain_base)    &&
1062                 settings->getNoiseParams("mgv7_np_terrain_alt",     np_terrain_alt)     &&
1063                 settings->getNoiseParams("mgv7_np_terrain_mod",     np_terrain_mod)     &&
1064                 settings->getNoiseParams("mgv7_np_terrain_persist", np_terrain_persist) &&
1065                 settings->getNoiseParams("mgv7_np_height_select",   np_height_select)   &&
1066                 settings->getNoiseParams("mgv7_np_ridge",           np_ridge);
1067         return success;
1068 }
1069
1070
1071 void MapgenV7Params::writeParams(Settings *settings) {
1072         settings->setNoiseParams("mgv7_np_terrain_base",    np_terrain_base);
1073         settings->setNoiseParams("mgv7_np_terrain_alt",     np_terrain_alt);
1074         settings->setNoiseParams("mgv7_np_terrain_mod",     np_terrain_mod);
1075         settings->setNoiseParams("mgv7_np_terrain_persist", np_terrain_persist);
1076         settings->setNoiseParams("mgv7_np_height_select",   np_height_select);
1077         settings->setNoiseParams("mgv7_np_ridge",           np_ridge);
1078 }
1079
1080
1081 /////////////////////////////////// legacy static functions for farmesh
1082
1083 s16 Mapgen::find_ground_level_from_noise(u64 seed, v2s16 p2d, s16 precision) {
1084         //just need to return something
1085         s16 level = 5;
1086         return level;
1087 }
1088
1089
1090 bool Mapgen::get_have_beach(u64 seed, v2s16 p2d) {
1091         double sandnoise = noise2d_perlin(
1092                                 0.2+(float)p2d.X/250, 0.7+(float)p2d.Y/250,
1093                                 seed+59420, 3, 0.50);
1094
1095         return (sandnoise > 0.15);
1096 }
1097
1098
1099 double Mapgen::tree_amount_2d(u64 seed, v2s16 p) {
1100         double noise = noise2d_perlin(
1101                         0.5+(float)p.X/125, 0.5+(float)p.Y/125,
1102                         seed+2, 4, 0.66);
1103         double zeroval = -0.39;
1104         if(noise < zeroval)
1105                 return 0;
1106         else
1107                 return 0.04 * (noise-zeroval) / (1.0-zeroval);
1108 }