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 FlagDesc flagdesc_gennotify[] = {
  68         {"dungeon",          1 << GENNOTIFY_DUNGEON},
  69         {"temple",           1 << GENNOTIFY_TEMPLE},
  70         {"cave_begin",       1 << GENNOTIFY_CAVE_BEGIN},
  71         {"cave_end",         1 << GENNOTIFY_CAVE_END},
  72         {"large_cave_begin", 1 << GENNOTIFY_LARGECAVE_BEGIN},
  73         {"large_cave_end",   1 << GENNOTIFY_LARGECAVE_END},
  74         {NULL,               0}
  75 };
  76
  77 ///////////////////////////////////////////////////////////////////////////////
  78
  79
  80 Ore *createOre(OreType type) {
  81         switch (type) {
  82                 case ORE_SCATTER:
  83                         return new OreScatter;
  84                 case ORE_SHEET:
  85                         return new OreSheet;
  86                 //case ORE_CLAYLIKE: //TODO: implement this!
  87                 //      return new OreClaylike;
  88                 default:
  89                         return NULL;
  90         }
  91 }
  92
  93
  94 Ore::~Ore() {
  95         delete np;
  96         delete noise;
  97 }
  98
  99
 100 void Ore::resolveNodeNames(INodeDefManager *ndef) {
 101         if (ore == CONTENT_IGNORE) {
 102                 ore = ndef->getId(ore_name);
 103                 if (ore == CONTENT_IGNORE) {
 104                         errorstream << "Ore::resolveNodeNames: ore node '"
 105                                 << ore_name << "' not defined";
 106                         ore = CONTENT_AIR;
 107                         wherein.push_back(CONTENT_AIR);
 108                         return;
 109                 }
 110         }
 111
 112         for (size_t i=0; i != wherein_names.size(); i++) {
 113                 std::string name = wherein_names[i];
 114                 content_t c = ndef->getId(name);
 115                 if (c != CONTENT_IGNORE) {
 116                         wherein.push_back(c);
 117                 }
 118         }
 119 }
 120
 121
 122 void Ore::placeOre(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
 123         int in_range = 0;
 124
 125         in_range |= (nmin.Y <= height_max && nmax.Y >= height_min);
 126         if (flags & OREFLAG_ABSHEIGHT)
 127                 in_range |= (nmin.Y >= -height_max && nmax.Y <= -height_min) << 1;
 128         if (!in_range)
 129                 return;
 130
 131         int ymin, ymax;
 132         if (in_range & ORE_RANGE_MIRROR) {
 133                 ymin = MYMAX(nmin.Y, -height_max);
 134                 ymax = MYMIN(nmax.Y, -height_min);
 135         } else {
 136                 ymin = MYMAX(nmin.Y, height_min);
 137                 ymax = MYMIN(nmax.Y, height_max);
 138         }
 139         if (clust_size >= ymax - ymin + 1)
 140                 return;
 141
 142         nmin.Y = ymin;
 143         nmax.Y = ymax;
 144         generate(mg->vm, mg->seed, blockseed, nmin, nmax);
 145 }
 146
 147
 148 void OreScatter::generate(ManualMapVoxelManipulator *vm, int seed,
 149                                                   u32 blockseed, v3s16 nmin, v3s16 nmax) {
 150         PseudoRandom pr(blockseed);
 151         MapNode n_ore(ore, 0, ore_param2);
 152
 153         int volume = (nmax.X - nmin.X + 1) *
 154                                  (nmax.Y - nmin.Y + 1) *
 155                                  (nmax.Z - nmin.Z + 1);
 156         int csize     = clust_size;
 157         int orechance = (csize * csize * csize) / clust_num_ores;
 158         int nclusters = volume / clust_scarcity;
 159
 160         for (int i = 0; i != nclusters; i++) {
 161                 int x0 = pr.range(nmin.X, nmax.X - csize + 1);
 162                 int y0 = pr.range(nmin.Y, nmax.Y - csize + 1);
 163                 int z0 = pr.range(nmin.Z, nmax.Z - csize + 1);
 164
 165                 if (np && (NoisePerlin3D(np, x0, y0, z0, seed) < nthresh))
 166                         continue;
 167
 168                 for (int z1 = 0; z1 != csize; z1++)
 169                 for (int y1 = 0; y1 != csize; y1++)
 170                 for (int x1 = 0; x1 != csize; x1++) {
 171                         if (pr.range(1, orechance) != 1)
 172                                 continue;
 173
 174                         u32 i = vm->m_area.index(x0 + x1, y0 + y1, z0 + z1);
 175                         for (size_t ii = 0; ii < wherein.size(); ii++)
 176                                 if (vm->m_data[i].getContent() == wherein[ii])
 177                                         vm->m_data[i] = n_ore;
 178                 }
 179         }
 180 }
 181
 182
 183 void OreSheet::generate(ManualMapVoxelManipulator *vm, int seed,
 184                                                 u32 blockseed, v3s16 nmin, v3s16 nmax) {
 185         PseudoRandom pr(blockseed + 4234);
 186         MapNode n_ore(ore, 0, ore_param2);
 187
 188         int max_height = clust_size;
 189         int y_start = pr.range(nmin.Y, nmax.Y - max_height);
 190
 191         if (!noise) {
 192                 int sx = nmax.X - nmin.X + 1;
 193                 int sz = nmax.Z - nmin.Z + 1;
 194                 noise = new Noise(np, 0, sx, sz);
 195         }
 196         noise->seed = seed + y_start;
 197         noise->perlinMap2D(nmin.X, nmin.Z);
 198
 199         int index = 0;
 200         for (int z = nmin.Z; z <= nmax.Z; z++)
 201         for (int x = nmin.X; x <= nmax.X; x++) {
 202                 float noiseval = noise->result[index++];
 203                 if (noiseval < nthresh)
 204                         continue;
 205
 206                 int height = max_height * (1. / pr.range(1, 3));
 207                 int y0 = y_start + np->scale * noiseval; //pr.range(1, 3) - 1;
 208                 int y1 = y0 + height;
 209                 for (int y = y0; y != y1; y++) {
 210                         u32 i = vm->m_area.index(x, y, z);
 211                         if (!vm->m_area.contains(i))
 212                                 continue;
 213
 214                         for (size_t ii = 0; ii < wherein.size(); ii++)
 215                                 if (vm->m_data[i].getContent() == wherein[ii])
 216                                         vm->m_data[i] = n_ore;
 217                 }
 218         }
 219 }
 220
 221
 222 ///////////////////////////////////////////////////////////////////////////////
 223
 224
 225 Decoration *createDecoration(DecorationType type) {
 226         switch (type) {
 227                 case DECO_SIMPLE:
 228                         return new DecoSimple;
 229                 case DECO_SCHEMATIC:
 230                         return new DecoSchematic;
 231                 //case DECO_LSYSTEM:
 232                 //      return new DecoLSystem;
 233                 default:
 234                         return NULL;
 235         }
 236 }
 237
 238
 239 Decoration::Decoration() {
 240         mapseed    = 0;
 241         np         = NULL;
 242         fill_ratio = 0;
 243         sidelen    = 1;
 244 }
 245
 246
 247 Decoration::~Decoration() {
 248         delete np;
 249 }
 250
 251
 252 void Decoration::resolveNodeNames(INodeDefManager *ndef) {
 253         this->ndef = ndef;
 254
 255         if (c_place_on == CONTENT_IGNORE)
 256                 c_place_on = ndef->getId(place_on_name);
 257 }
 258
 259
 260 void Decoration::placeDeco(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
 261         PseudoRandom ps(blockseed + 53);
 262         int carea_size = nmax.X - nmin.X + 1;
 263
 264         // Divide area into parts
 265         if (carea_size % sidelen) {
 266                 errorstream << "Decoration::placeDeco: chunk size is not divisible by "
 267                         "sidelen; setting sidelen to " << carea_size << std::endl;
 268                 sidelen = carea_size;
 269         }
 270
 271         s16 divlen = carea_size / sidelen;
 272         int area = sidelen * sidelen;
 273
 274         for (s16 z0 = 0; z0 < divlen; z0++)
 275         for (s16 x0 = 0; x0 < divlen; x0++) {
 276                 v2s16 p2d_center( // Center position of part of division
 277                         nmin.X + sidelen / 2 + sidelen * x0,
 278                         nmin.Z + sidelen / 2 + sidelen * z0
 279                 );
 280                 v2s16 p2d_min( // Minimum edge of part of division
 281                         nmin.X + sidelen * x0,
 282                         nmin.Z + sidelen * z0
 283                 );
 284                 v2s16 p2d_max( // Maximum edge of part of division
 285                         nmin.X + sidelen + sidelen * x0 - 1,
 286                         nmin.Z + sidelen + sidelen * z0 - 1
 287                 );
 288
 289                 // Amount of decorations
 290                 float nval = np ?
 291                         NoisePerlin2D(np, p2d_center.X, p2d_center.Y, mapseed) :
 292                         fill_ratio;
 293                 u32 deco_count = area * MYMAX(nval, 0.f);
 294
 295                 for (u32 i = 0; i < deco_count; i++) {
 296                         s16 x = ps.range(p2d_min.X, p2d_max.X);
 297                         s16 z = ps.range(p2d_min.Y, p2d_max.Y);
 298
 299                         int mapindex = carea_size * (z - nmin.Z) + (x - nmin.X);
 300
 301                         s16 y = mg->heightmap ?
 302                                         mg->heightmap[mapindex] :
 303                                         mg->findGroundLevel(v2s16(x, z), nmin.Y, nmax.Y);
 304
 305                         if (y < nmin.Y || y > nmax.Y)
 306                                 continue;
 307
 308                         int height = getHeight();
 309                         int max_y = nmax.Y;// + MAP_BLOCKSIZE - 1;
 310                         if (y + 1 + height > max_y) {
 311                                 continue;
 312 #if 0
 313                                 printf("Decoration at (%d %d %d) cut off\n", x, y, z);
 314                                 //add to queue
 315                                 JMutexAutoLock cutofflock(cutoff_mutex);
 316                                 cutoffs.push_back(CutoffData(x, y, z, height));
 317 #endif
 318                         }
 319
 320                         if (mg->biomemap) {
 321                                 std::set<u8>::iterator iter;
 322
 323                                 if (biomes.size()) {
 324                                         iter = biomes.find(mg->biomemap[mapindex]);
 325                                         if (iter == biomes.end())
 326                                                 continue;
 327                                 }
 328                         }
 329
 330                         generate(mg, &ps, max_y, v3s16(x, y, z));
 331                 }
 332         }
 333 }
 334
 335
 336 #if 0
 337 void Decoration::placeCutoffs(Mapgen *mg, u32 blockseed, v3s16 nmin, v3s16 nmax) {
 338         PseudoRandom pr(blockseed + 53);
 339         std::vector<CutoffData> handled_cutoffs;
 340
 341         // Copy over the cutoffs we're interested in so we don't needlessly hold a lock
 342         {
 343                 JMutexAutoLock cutofflock(cutoff_mutex);
 344                 for (std::list<CutoffData>::iterator i = cutoffs.begin();
 345                         i != cutoffs.end(); ++i) {
 346                         CutoffData cutoff = *i;
 347                         v3s16 p    = cutoff.p;
 348                         s16 height = cutoff.height;
 349                         if (p.X < nmin.X || p.X > nmax.X ||
 350                                 p.Z < nmin.Z || p.Z > nmax.Z)
 351                                 continue;
 352                         if (p.Y + height < nmin.Y || p.Y > nmax.Y)
 353                                 continue;
 354
 355                         handled_cutoffs.push_back(cutoff);
 356                 }
 357         }
 358
 359         // Generate the cutoffs
 360         for (size_t i = 0; i != handled_cutoffs.size(); i++) {
 361                 v3s16 p    = handled_cutoffs[i].p;
 362                 s16 height = handled_cutoffs[i].height;
 363
 364                 if (p.Y + height > nmax.Y) {
 365                         //printf("Decoration at (%d %d %d) cut off again!\n", p.X, p.Y, p.Z);
 366                         cuttoffs.push_back(v3s16(p.X, p.Y, p.Z));
 367                 }
 368
 369                 generate(mg, &pr, nmax.Y, nmin.Y - p.Y, v3s16(p.X, nmin.Y, p.Z));
 370         }
 371
 372         // Remove cutoffs that were handled from the cutoff list
 373         {
 374                 JMutexAutoLock cutofflock(cutoff_mutex);
 375                 for (std::list<CutoffData>::iterator i = cutoffs.begin();
 376                         i != cutoffs.end(); ++i) {
 377
 378                         for (size_t j = 0; j != handled_cutoffs.size(); j++) {
 379                                 CutoffData coff = *i;
 380                                 if (coff.p == handled_cutoffs[j].p)
 381                                         i = cutoffs.erase(i);
 382                         }
 383                 }
 384         }
 385 }
 386 #endif
 387
 388
 389 ///////////////////////////////////////////////////////////////////////////////
 390
 391
 392 void DecoSimple::resolveNodeNames(INodeDefManager *ndef) {
 393         Decoration::resolveNodeNames(ndef);
 394
 395         if (c_deco == CONTENT_IGNORE && !decolist_names.size()) {
 396                 c_deco = ndef->getId(deco_name);
 397                 if (c_deco == CONTENT_IGNORE) {
 398                         errorstream << "DecoSimple::resolveNodeNames: decoration node '"
 399                                 << deco_name << "' not defined" << std::endl;
 400                         c_deco = CONTENT_AIR;
 401                 }
 402         }
 403         if (c_spawnby == CONTENT_IGNORE) {
 404                 c_spawnby = ndef->getId(spawnby_name);
 405                 if (c_spawnby == CONTENT_IGNORE) {
 406                         errorstream << "DecoSimple::resolveNodeNames: spawnby node '"
 407                                 << spawnby_name << "' not defined" << std::endl;
 408                         nspawnby = -1;
 409                         c_spawnby = CONTENT_AIR;
 410                 }
 411         }
 412
 413         if (c_decolist.size())
 414                 return;
 415
 416         for (size_t i = 0; i != decolist_names.size(); i++) {
 417                 content_t c = ndef->getId(decolist_names[i]);
 418                 if (c == CONTENT_IGNORE) {
 419                         errorstream << "DecoSimple::resolveNodeNames: decolist node '"
 420                                 << decolist_names[i] << "' not defined" << std::endl;
 421                         c = CONTENT_AIR;
 422                 }
 423                 c_decolist.push_back(c);
 424         }
 425 }
 426
 427
 428 void DecoSimple::generate(Mapgen *mg, PseudoRandom *pr, s16 max_y, v3s16 p) {
 429         ManualMapVoxelManipulator *vm = mg->vm;
 430
 431         u32 vi = vm->m_area.index(p);
 432         if (vm->m_data[vi].getContent() != c_place_on &&
 433                 c_place_on != CONTENT_IGNORE)
 434                 return;
 435
 436         if (nspawnby != -1) {
 437                 int nneighs = 0;
 438                 v3s16 dirs[8] = { // a Moore neighborhood
 439                         v3s16( 0, 0,  1),
 440                         v3s16( 0, 0, -1),
 441                         v3s16( 1, 0,  0),
 442                         v3s16(-1, 0,  0),
 443                         v3s16( 1, 0,  1),
 444                         v3s16(-1, 0,  1),
 445                         v3s16(-1, 0, -1),
 446                         v3s16( 1, 0, -1)
 447                 };
 448
 449                 for (int i = 0; i != 8; i++) {
 450                         u32 index = vm->m_area.index(p + dirs[i]);
 451                         if (vm->m_area.contains(index) &&
 452                                 vm->m_data[index].getContent() == c_spawnby)
 453                                 nneighs++;
 454                 }
 455
 456                 if (nneighs < nspawnby)
 457                         return;
 458         }
 459
 460         size_t ndecos = c_decolist.size();
 461         content_t c_place = ndecos ? c_decolist[pr->range(0, ndecos - 1)] : c_deco;
 462
 463         s16 height = (deco_height_max > 0) ?
 464                 pr->range(deco_height, deco_height_max) : deco_height;
 465
 466         height = MYMIN(height, max_y - p.Y);
 467
 468         v3s16 em = vm->m_area.getExtent();
 469         for (int i = 0; i < height; i++) {
 470                 vm->m_area.add_y(em, vi, 1);
 471
 472                 content_t c = vm->m_data[vi].getContent();
 473                 if (c != CONTENT_AIR && c != CONTENT_IGNORE)
 474                         break;
 475
 476                 vm->m_data[vi] = MapNode(c_place);
 477         }
 478 }
 479
 480
 481 int DecoSimple::getHeight() {
 482         return (deco_height_max > 0) ? deco_height_max : deco_height;
 483 }
 484
 485
 486 std::string DecoSimple::getName() {
 487         return deco_name;
 488 }
 489
 490
 491 ///////////////////////////////////////////////////////////////////////////////
 492
 493
 494 DecoSchematic::DecoSchematic() {
 495         node_names  = NULL;
 496         schematic   = NULL;
 497         slice_probs = NULL;
 498         flags       = 0;
 499         size        = v3s16(0, 0, 0);
 500 }
 501
 502
 503 DecoSchematic::~DecoSchematic() {
 504         delete node_names;
 505         delete []schematic;
 506         delete []slice_probs;
 507 }
 508
 509
 510 void DecoSchematic::resolveNodeNames(INodeDefManager *ndef) {
 511         Decoration::resolveNodeNames(ndef);
 512
 513         if (filename.empty())
 514                 return;
 515
 516         if (!node_names) {
 517                 errorstream << "DecoSchematic::resolveNodeNames: node name list was "
 518                         "not created" << std::endl;
 519                 return;
 520         }
 521
 522         for (size_t i = 0; i != node_names->size(); i++) {
 523                 std::string name = node_names->at(i);
 524
 525                 std::map<std::string, std::string>::iterator it;
 526                 it = replacements.find(name);
 527                 if (it != replacements.end())
 528                         name = it->second;
 529
 530                 content_t c = ndef->getId(name);
 531                 if (c == CONTENT_IGNORE) {
 532                         errorstream << "DecoSchematic::resolveNodeNames: node '"
 533                                 << name << "' not defined" << std::endl;
 534                         c = CONTENT_AIR;
 535                 }
 536
 537                 c_nodes.push_back(c);
 538         }
 539
 540         for (int i = 0; i != size.X * size.Y * size.Z; i++)
 541                 schematic[i].setContent(c_nodes[schematic[i].getContent()]);
 542
 543         delete node_names;
 544         node_names = NULL;
 545 }
 546
 547
 548 void DecoSchematic::generate(Mapgen *mg, PseudoRandom *pr, s16 max_y, v3s16 p) {
 549         ManualMapVoxelManipulator *vm = mg->vm;
 550
 551         if (flags & DECO_PLACE_CENTER_X)
 552                 p.X -= (size.X + 1) / 2;
 553         if (flags & DECO_PLACE_CENTER_Y)
 554                 p.Y -= (size.Y + 1) / 2;
 555         if (flags & DECO_PLACE_CENTER_Z)
 556                 p.Z -= (size.Z + 1) / 2;
 557
 558         u32 vi = vm->m_area.index(p);
 559         if (vm->m_data[vi].getContent() != c_place_on &&
 560                 c_place_on != CONTENT_IGNORE)
 561                 return;
 562
 563         Rotation rot = (rotation == ROTATE_RAND) ?
 564                 (Rotation)pr->range(ROTATE_0, ROTATE_270) : rotation;
 565
 566         blitToVManip(p, vm, rot, false);
 567 }
 568
 569
 570 int DecoSchematic::getHeight() {
 571         return size.Y;
 572 }
 573
 574
 575 std::string DecoSchematic::getName() {
 576         return filename;
 577 }
 578
 579
 580 void DecoSchematic::blitToVManip(v3s16 p, ManualMapVoxelManipulator *vm,
 581                                                                 Rotation rot, bool force_placement) {
 582         int xstride = 1;
 583         int ystride = size.X;
 584         int zstride = size.X * size.Y;
 585
 586         s16 sx = size.X;
 587         s16 sy = size.Y;
 588         s16 sz = size.Z;
 589
 590         int i_start, i_step_x, i_step_z;
 591         switch (rot) {
 592                 case ROTATE_90:
 593                         i_start  = sx - 1;
 594                         i_step_x = zstride;
 595                         i_step_z = -xstride;
 596                         SWAP(s16, sx, sz);
 597                         break;
 598                 case ROTATE_180:
 599                         i_start  = zstride * (sz - 1) + sx - 1;
 600                         i_step_x = -xstride;
 601                         i_step_z = -zstride;
 602                         break;
 603                 case ROTATE_270:
 604                         i_start  = zstride * (sz - 1);
 605                         i_step_x = -zstride;
 606                         i_step_z = xstride;
 607                         SWAP(s16, sx, sz);
 608                         break;
 609                 default:
 610                         i_start  = 0;
 611                         i_step_x = xstride;
 612                         i_step_z = zstride;
 613         }
 614
 615         s16 y_map = p.Y;
 616         for (s16 y = 0; y != sy; y++) {
 617                 if (slice_probs[y] != MTSCHEM_PROB_ALWAYS &&
 618                         myrand_range(1, 255) > slice_probs[y])
 619                         continue;
 620
 621                 for (s16 z = 0; z != sz; z++) {
 622                         u32 i = z * i_step_z + y * ystride + i_start;
 623                         for (s16 x = 0; x != sx; x++, i += i_step_x) {
 624                                 u32 vi = vm->m_area.index(p.X + x, y_map, p.Z + z);
 625                                 if (!vm->m_area.contains(vi))
 626                                         continue;
 627
 628                                 if (schematic[i].getContent() == CONTENT_IGNORE)
 629                                         continue;
 630
 631                                 if (schematic[i].param1 == MTSCHEM_PROB_NEVER)
 632                                         continue;
 633
 634                                 if (!force_placement) {
 635                                         content_t c = vm->m_data[vi].getContent();
 636                                         if (c != CONTENT_AIR && c != CONTENT_IGNORE)
 637                                                 continue;
 638                                 }
 639
 640                                 if (schematic[i].param1 != MTSCHEM_PROB_ALWAYS &&
 641                                         myrand_range(1, 255) > schematic[i].param1)
 642                                         continue;
 643
 644                                 vm->m_data[vi] = schematic[i];
 645                                 vm->m_data[vi].param1 = 0;
 646
 647                                 if (rot)
 648                                         vm->m_data[vi].rotateAlongYAxis(ndef, rot);
 649                         }
 650                 }
 651                 y_map++;
 652         }
 653 }
 654
 655
 656 void DecoSchematic::placeStructure(Map *map, v3s16 p) {
 657         assert(schematic != NULL);
 658         ManualMapVoxelManipulator *vm = new ManualMapVoxelManipulator(map);
 659
 660         Rotation rot = (rotation == ROTATE_RAND) ?
 661                 (Rotation)myrand_range(ROTATE_0, ROTATE_270) : rotation;
 662
 663         v3s16 s = (rot == ROTATE_90 || rot == ROTATE_270) ?
 664                                 v3s16(size.Z, size.Y, size.X) : size;
 665
 666         if (flags & DECO_PLACE_CENTER_X)
 667                 p.X -= (s.X + 1) / 2;
 668         if (flags & DECO_PLACE_CENTER_Y)
 669                 p.Y -= (s.Y + 1) / 2;
 670         if (flags & DECO_PLACE_CENTER_Z)
 671                 p.Z -= (s.Z + 1) / 2;
 672
 673         v3s16 bp1 = getNodeBlockPos(p);
 674         v3s16 bp2 = getNodeBlockPos(p + s - v3s16(1,1,1));
 675         vm->initialEmerge(bp1, bp2);
 676
 677         blitToVManip(p, vm, rot, true);
 678
 679         std::map<v3s16, MapBlock *> lighting_modified_blocks;
 680         std::map<v3s16, MapBlock *> modified_blocks;
 681         vm->blitBackAll(&modified_blocks);
 682
 683         // TODO: Optimize this by using Mapgen::calcLighting() instead
 684         lighting_modified_blocks.insert(modified_blocks.begin(), modified_blocks.end());
 685         map->updateLighting(lighting_modified_blocks, modified_blocks);
 686
 687         MapEditEvent event;
 688         event.type = MEET_OTHER;
 689         for (std::map<v3s16, MapBlock *>::iterator
 690                 it = modified_blocks.begin();
 691                 it != modified_blocks.end(); ++it)
 692                 event.modified_blocks.insert(it->first);
 693
 694         map->dispatchEvent(&event);
 695 }
 696
 697
 698 bool DecoSchematic::loadSchematicFile() {
 699         content_t cignore = CONTENT_IGNORE;
 700         bool have_cignore = false;
 701
 702         std::ifstream is(filename.c_str(), std::ios_base::binary);
 703
 704         u32 signature = readU32(is);
 705         if (signature != MTSCHEM_FILE_SIGNATURE) {
 706                 errorstream << "loadSchematicFile: invalid schematic "
 707                         "file" << std::endl;
 708                 return false;
 709         }
 710
 711         u16 version = readU16(is);
 712         if (version > MTSCHEM_FILE_VER_HIGHEST_READ) {
 713                 errorstream << "loadSchematicFile: unsupported schematic "
 714                         "file version" << std::endl;
 715                 return false;
 716         }
 717
 718         size = readV3S16(is);
 719
 720         delete []slice_probs;
 721         slice_probs = new u8[size.Y];
 722         if (version >= 3) {
 723                 for (int y = 0; y != size.Y; y++)
 724                         slice_probs[y] = readU8(is);
 725         } else {
 726                 for (int y = 0; y != size.Y; y++)
 727                         slice_probs[y] = MTSCHEM_PROB_ALWAYS;
 728         }
 729
 730         int nodecount = size.X * size.Y * size.Z;
 731
 732         u16 nidmapcount = readU16(is);
 733
 734         node_names = new std::vector<std::string>;
 735         for (int i = 0; i != nidmapcount; i++) {
 736                 std::string name = deSerializeString(is);
 737                 if (name == "ignore") {
 738                         name = "air";
 739                         cignore = i;
 740                         have_cignore = true;
 741                 }
 742                 node_names->push_back(name);
 743         }
 744
 745         delete []schematic;
 746         schematic = new MapNode[nodecount];
 747         MapNode::deSerializeBulk(is, SER_FMT_VER_HIGHEST_READ, schematic,
 748                                 nodecount, 2, 2, true);
 749
 750         if (version == 1) { // fix up the probability values
 751                 for (int i = 0; i != nodecount; i++) {
 752                         if (schematic[i].param1 == 0)
 753                                 schematic[i].param1 = MTSCHEM_PROB_ALWAYS;
 754                         if (have_cignore && schematic[i].getContent() == cignore)
 755                                 schematic[i].param1 = MTSCHEM_PROB_NEVER;
 756                 }
 757         }
 758
 759         return true;
 760 }
 761
 762
 763 /*
 764         Minetest Schematic File Format
 765
 766         All values are stored in big-endian byte order.
 767         [u32] signature: 'MTSM'
 768         [u16] version: 3
 769         [u16] size X
 770         [u16] size Y
 771         [u16] size Z
 772         For each Y:
 773                 [u8] slice probability value
 774         [Name-ID table] Name ID Mapping Table
 775                 [u16] name-id count
 776                 For each name-id mapping:
 777                         [u16] name length
 778                         [u8[]] name
 779         ZLib deflated {
 780         For each node in schematic:  (for z, y, x)
 781                 [u16] content
 782         For each node in schematic:
 783                 [u8] probability of occurance (param1)
 784         For each node in schematic:
 785                 [u8] param2
 786         }
 787
 788         Version changes:
 789         1 - Initial version
 790         2 - Fixed messy never/always place; 0 probability is now never, 0xFF is always
 791 */
 792 void DecoSchematic::saveSchematicFile(INodeDefManager *ndef) {
 793         std::ostringstream ss(std::ios_base::binary);
 794
 795         writeU32(ss, MTSCHEM_FILE_SIGNATURE);         // signature
 796         writeU16(ss, MTSCHEM_FILE_VER_HIGHEST_WRITE); // version
 797         writeV3S16(ss, size);                         // schematic size
 798
 799         for (int y = 0; y != size.Y; y++)             // Y slice probabilities
 800                 writeU8(ss, slice_probs[y]);
 801
 802         std::vector<content_t> usednodes;
 803         int nodecount = size.X * size.Y * size.Z;
 804         build_nnlist_and_update_ids(schematic, nodecount, &usednodes);
 805
 806         u16 numids = usednodes.size();
 807         writeU16(ss, numids); // name count
 808         for (int i = 0; i != numids; i++)
 809                 ss << serializeString(ndef->get(usednodes[i]).name); // node names
 810
 811         // compressed bulk node data
 812         MapNode::serializeBulk(ss, SER_FMT_VER_HIGHEST_WRITE, schematic,
 813                                 nodecount, 2, 2, true);
 814
 815         fs::safeWriteToFile(filename, ss.str());
 816 }
 817
 818
 819 void build_nnlist_and_update_ids(MapNode *nodes, u32 nodecount,
 820                                                 std::vector<content_t> *usednodes) {
 821         std::map<content_t, content_t> nodeidmap;
 822         content_t numids = 0;
 823
 824         for (u32 i = 0; i != nodecount; i++) {
 825                 content_t id;
 826                 content_t c = nodes[i].getContent();
 827
 828                 std::map<content_t, content_t>::const_iterator it = nodeidmap.find(c);
 829                 if (it == nodeidmap.end()) {
 830                         id = numids;
 831                         numids++;
 832
 833                         usednodes->push_back(c);
 834                         nodeidmap.insert(std::make_pair(c, id));
 835                 } else {
 836                         id = it->second;
 837                 }
 838                 nodes[i].setContent(id);
 839         }
 840 }
 841
 842
 843 bool DecoSchematic::getSchematicFromMap(Map *map, v3s16 p1, v3s16 p2) {
 844         ManualMapVoxelManipulator *vm = new ManualMapVoxelManipulator(map);
 845
 846         v3s16 bp1 = getNodeBlockPos(p1);
 847         v3s16 bp2 = getNodeBlockPos(p2);
 848         vm->initialEmerge(bp1, bp2);
 849
 850         size = p2 - p1 + 1;
 851
 852         slice_probs = new u8[size.Y];
 853         for (s16 y = 0; y != size.Y; y++)
 854                 slice_probs[y] = MTSCHEM_PROB_ALWAYS;
 855
 856         schematic = new MapNode[size.X * size.Y * size.Z];
 857
 858         u32 i = 0;
 859         for (s16 z = p1.Z; z <= p2.Z; z++)
 860         for (s16 y = p1.Y; y <= p2.Y; y++) {
 861                 u32 vi = vm->m_area.index(p1.X, y, z);
 862                 for (s16 x = p1.X; x <= p2.X; x++, i++, vi++) {
 863                         schematic[i] = vm->m_data[vi];
 864                         schematic[i].param1 = MTSCHEM_PROB_ALWAYS;
 865                 }
 866         }
 867
 868         delete vm;
 869         return true;
 870 }
 871
 872
 873 void DecoSchematic::applyProbabilities(v3s16 p0,
 874         std::vector<std::pair<v3s16, u8> > *plist,
 875         std::vector<std::pair<s16, u8> > *splist) {
 876
 877         for (size_t i = 0; i != plist->size(); i++) {
 878                 v3s16 p = (*plist)[i].first - p0;
 879                 int index = p.Z * (size.Y * size.X) + p.Y * size.X + p.X;
 880                 if (index < size.Z * size.Y * size.X) {
 881                         u8 prob = (*plist)[i].second;
 882                         schematic[index].param1 = prob;
 883
 884                         // trim unnecessary node names from schematic
 885                         if (prob == MTSCHEM_PROB_NEVER)
 886                                 schematic[index].setContent(CONTENT_AIR);
 887                 }
 888         }
 889
 890         for (size_t i = 0; i != splist->size(); i++) {
 891                 s16 y = (*splist)[i].first - p0.Y;
 892                 slice_probs[y] = (*splist)[i].second;
 893         }
 894 }
 895
 896
 897 ///////////////////////////////////////////////////////////////////////////////
 898
 899
 900 Mapgen::Mapgen() {
 901         seed        = 0;
 902         water_level = 0;
 903         generating  = false;
 904         id          = -1;
 905         vm          = NULL;
 906         ndef        = NULL;
 907         heightmap   = NULL;
 908         biomemap    = NULL;
 909
 910         for (unsigned int i = 0; i != NUM_GEN_NOTIFY; i++)
 911                 gen_notifications[i] = new std::vector<v3s16>;
 912 }
 913
 914
 915 Mapgen::~Mapgen() {
 916         for (unsigned int i = 0; i != NUM_GEN_NOTIFY; i++)
 917                 delete gen_notifications[i];
 918 }
 919
 920
 921 // Returns Y one under area minimum if not found
 922 s16 Mapgen::findGroundLevelFull(v2s16 p2d) {
 923         v3s16 em = vm->m_area.getExtent();
 924         s16 y_nodes_max = vm->m_area.MaxEdge.Y;
 925         s16 y_nodes_min = vm->m_area.MinEdge.Y;
 926         u32 i = vm->m_area.index(p2d.X, y_nodes_max, p2d.Y);
 927         s16 y;
 928
 929         for (y = y_nodes_max; y >= y_nodes_min; y--) {
 930                 MapNode &n = vm->m_data[i];
 931                 if (ndef->get(n).walkable)
 932                         break;
 933
 934                 vm->m_area.add_y(em, i, -1);
 935         }
 936         return (y >= y_nodes_min) ? y : y_nodes_min - 1;
 937 }
 938
 939
 940 s16 Mapgen::findGroundLevel(v2s16 p2d, s16 ymin, s16 ymax) {
 941         v3s16 em = vm->m_area.getExtent();
 942         u32 i = vm->m_area.index(p2d.X, ymax, p2d.Y);
 943         s16 y;
 944
 945         for (y = ymax; y >= ymin; y--) {
 946                 MapNode &n = vm->m_data[i];
 947                 if (ndef->get(n).walkable)
 948                         break;
 949
 950                 vm->m_area.add_y(em, i, -1);
 951         }
 952         return y;
 953 }
 954
 955
 956 void Mapgen::updateHeightmap(v3s16 nmin, v3s16 nmax) {
 957         if (!heightmap)
 958                 return;
 959
 960         //TimeTaker t("Mapgen::updateHeightmap", NULL, PRECISION_MICRO);
 961         int index = 0;
 962         for (s16 z = nmin.Z; z <= nmax.Z; z++) {
 963                 for (s16 x = nmin.X; x <= nmax.X; x++, index++) {
 964                         s16 y = findGroundLevel(v2s16(x, z), nmin.Y, nmax.Y);
 965
 966                         // if the values found are out of range, trust the old heightmap
 967                         if (y == nmax.Y && heightmap[index] > nmax.Y)
 968                                 continue;
 969                         if (y == nmin.Y - 1 && heightmap[index] < nmin.Y)
 970                                 continue;
 971
 972                         heightmap[index] = y;
 973                 }
 974         }
 975         //printf("updateHeightmap: %dus\n", t.stop());
 976 }
 977
 978
 979 void Mapgen::updateLiquid(UniqueQueue<v3s16> *trans_liquid, v3s16 nmin, v3s16 nmax) {
 980         bool isliquid, wasliquid, rare;
 981         v3s16 em  = vm->m_area.getExtent();
 982         rare = g_settings->getBool("liquid_finite");
 983         int rarecnt = 0;
 984
 985         for (s16 z = nmin.Z; z <= nmax.Z; z++) {
 986                 for (s16 x = nmin.X; x <= nmax.X; x++) {
 987                         wasliquid = true;
 988
 989                         u32 i = vm->m_area.index(x, nmax.Y, z);
 990                         for (s16 y = nmax.Y; y >= nmin.Y; y--) {
 991                                 isliquid = ndef->get(vm->m_data[i]).isLiquid();
 992
 993                                 // there was a change between liquid and nonliquid, add to queue. no need to add every with liquid_finite
 994                                 if (isliquid != wasliquid && (!rare || !(rarecnt++ % 36)))
 995                                         trans_liquid->push_back(v3s16(x, y, z));
 996
 997                                 wasliquid = isliquid;
 998                                 vm->m_area.add_y(em, i, -1);
 999                         }
1000                 }
1001         }
1002 }
1003
1004
1005 void Mapgen::setLighting(v3s16 nmin, v3s16 nmax, u8 light) {
1006         ScopeProfiler sp(g_profiler, "EmergeThread: mapgen lighting update", SPT_AVG);
1007         VoxelArea a(nmin, nmax);
1008
1009         for (int z = a.MinEdge.Z; z <= a.MaxEdge.Z; z++) {
1010                 for (int y = a.MinEdge.Y; y <= a.MaxEdge.Y; y++) {
1011                         u32 i = vm->m_area.index(a.MinEdge.X, y, z);
1012                         for (int x = a.MinEdge.X; x <= a.MaxEdge.X; x++, i++)
1013                                 vm->m_data[i].param1 = light;
1014                 }
1015         }
1016 }
1017
1018
1019 void Mapgen::lightSpread(VoxelArea &a, v3s16 p, u8 light) {
1020         if (light <= 1 || !a.contains(p))
1021                 return;
1022
1023         u32 vi = vm->m_area.index(p);
1024         MapNode &nn = vm->m_data[vi];
1025
1026         light--;
1027         // should probably compare masked, but doesn't seem to make a difference
1028         if (light <= nn.param1 || !ndef->get(nn).light_propagates)
1029                 return;
1030
1031         nn.param1 = light;
1032
1033         lightSpread(a, p + v3s16(0, 0, 1), light);
1034         lightSpread(a, p + v3s16(0, 1, 0), light);
1035         lightSpread(a, p + v3s16(1, 0, 0), light);
1036         lightSpread(a, p - v3s16(0, 0, 1), light);
1037         lightSpread(a, p - v3s16(0, 1, 0), light);
1038         lightSpread(a, p - v3s16(1, 0, 0), light);
1039 }
1040
1041
1042 void Mapgen::calcLighting(v3s16 nmin, v3s16 nmax) {
1043         VoxelArea a(nmin, nmax);
1044         bool block_is_underground = (water_level >= nmax.Y);
1045
1046         ScopeProfiler sp(g_profiler, "EmergeThread: mapgen lighting update", SPT_AVG);
1047         //TimeTaker t("updateLighting");
1048
1049         // first, send vertical rays of sunshine downward
1050         v3s16 em = vm->m_area.getExtent();
1051         for (int z = a.MinEdge.Z; z <= a.MaxEdge.Z; z++) {
1052                 for (int x = a.MinEdge.X; x <= a.MaxEdge.X; x++) {
1053                         // see if we can get a light value from the overtop
1054                         u32 i = vm->m_area.index(x, a.MaxEdge.Y + 1, z);
1055                         if (vm->m_data[i].getContent() == CONTENT_IGNORE) {
1056                                 if (block_is_underground)
1057                                         continue;
1058                         } else if ((vm->m_data[i].param1 & 0x0F) != LIGHT_SUN) {
1059                                 continue;
1060                         }
1061                         vm->m_area.add_y(em, i, -1);
1062
1063                         for (int y = a.MaxEdge.Y; y >= a.MinEdge.Y; y--) {
1064                                 MapNode &n = vm->m_data[i];
1065                                 if (!ndef->get(n).sunlight_propagates)
1066                                         break;
1067                                 n.param1 = LIGHT_SUN;
1068                                 vm->m_area.add_y(em, i, -1);
1069                         }
1070                 }
1071         }
1072
1073         // now spread the sunlight and light up any sources
1074         for (int z = a.MinEdge.Z; z <= a.MaxEdge.Z; z++) {
1075                 for (int y = a.MinEdge.Y; y <= a.MaxEdge.Y; y++) {
1076                         u32 i = vm->m_area.index(a.MinEdge.X, y, z);
1077                         for (int x = a.MinEdge.X; x <= a.MaxEdge.X; x++, i++) {
1078                                 MapNode &n = vm->m_data[i];
1079                                 if (n.getContent() == CONTENT_IGNORE ||
1080                                         !ndef->get(n).light_propagates)
1081                                         continue;
1082
1083                                 u8 light_produced = ndef->get(n).light_source & 0x0F;
1084                                 if (light_produced)
1085                                         n.param1 = light_produced;
1086
1087                                 u8 light = n.param1 & 0x0F;
1088                                 if (light) {
1089                                         lightSpread(a, v3s16(x,     y,     z + 1), light - 1);
1090                                         lightSpread(a, v3s16(x,     y + 1, z    ), light - 1);
1091                                         lightSpread(a, v3s16(x + 1, y,     z    ), light - 1);
1092                                         lightSpread(a, v3s16(x,     y,     z - 1), light - 1);
1093                                         lightSpread(a, v3s16(x,     y - 1, z    ), light - 1);
1094                                         lightSpread(a, v3s16(x - 1, y,     z    ), light - 1);
1095                                 }
1096                         }
1097                 }
1098         }
1099
1100         //printf("updateLighting: %dms\n", t.stop());
1101 }
1102
1103
1104 void Mapgen::calcLightingOld(v3s16 nmin, v3s16 nmax) {
1105         enum LightBank banks[2] = {LIGHTBANK_DAY, LIGHTBANK_NIGHT};
1106         VoxelArea a(nmin, nmax);
1107         bool block_is_underground = (water_level > nmax.Y);
1108         bool sunlight = !block_is_underground;
1109
1110         ScopeProfiler sp(g_profiler, "EmergeThread: mapgen lighting update", SPT_AVG);
1111
1112         for (int i = 0; i < 2; i++) {
1113                 enum LightBank bank = banks[i];
1114                 std::set<v3s16> light_sources;
1115                 std::map<v3s16, u8> unlight_from;
1116
1117                 voxalgo::clearLightAndCollectSources(*vm, a, bank, ndef,
1118                                                                                          light_sources, unlight_from);
1119                 voxalgo::propagateSunlight(*vm, a, sunlight, light_sources, ndef);
1120
1121                 vm->unspreadLight(bank, unlight_from, light_sources, ndef);
1122                 vm->spreadLight(bank, light_sources, ndef);
1123         }
1124 }
1125
1126
1127 //////////////////////// Mapgen V6 parameter read/write
1128
1129 bool MapgenV6Params::readParams(Settings *settings) {
1130         freq_desert = settings->getFloat("mgv6_freq_desert");
1131         freq_beach  = settings->getFloat("mgv6_freq_beach");
1132
1133         bool success =
1134                 settings->getNoiseParams("mgv6_np_terrain_base",   np_terrain_base)   &&
1135                 settings->getNoiseParams("mgv6_np_terrain_higher", np_terrain_higher) &&
1136                 settings->getNoiseParams("mgv6_np_steepness",      np_steepness)      &&
1137                 settings->getNoiseParams("mgv6_np_height_select",  np_height_select)  &&
1138                 settings->getNoiseParams("mgv6_np_mud",            np_mud)            &&
1139                 settings->getNoiseParams("mgv6_np_beach",          np_beach)          &&
1140                 settings->getNoiseParams("mgv6_np_biome",          np_biome)          &&
1141                 settings->getNoiseParams("mgv6_np_cave",           np_cave)           &&
1142                 settings->getNoiseParams("mgv6_np_humidity",       np_humidity)       &&
1143                 settings->getNoiseParams("mgv6_np_trees",          np_trees)          &&
1144                 settings->getNoiseParams("mgv6_np_apple_trees",    np_apple_trees);
1145         return success;
1146 }
1147
1148
1149 void MapgenV6Params::writeParams(Settings *settings) {
1150         settings->setFloat("mgv6_freq_desert", freq_desert);
1151         settings->setFloat("mgv6_freq_beach",  freq_beach);
1152
1153         settings->setNoiseParams("mgv6_np_terrain_base",   np_terrain_base);
1154         settings->setNoiseParams("mgv6_np_terrain_higher", np_terrain_higher);
1155         settings->setNoiseParams("mgv6_np_steepness",      np_steepness);
1156         settings->setNoiseParams("mgv6_np_height_select",  np_height_select);
1157         settings->setNoiseParams("mgv6_np_mud",            np_mud);
1158         settings->setNoiseParams("mgv6_np_beach",          np_beach);
1159         settings->setNoiseParams("mgv6_np_biome",          np_biome);
1160         settings->setNoiseParams("mgv6_np_cave",           np_cave);
1161         settings->setNoiseParams("mgv6_np_humidity",       np_humidity);
1162         settings->setNoiseParams("mgv6_np_trees",          np_trees);
1163         settings->setNoiseParams("mgv6_np_apple_trees",    np_apple_trees);
1164 }
1165
1166
1167 bool MapgenV7Params::readParams(Settings *settings) {
1168         bool success =
1169                 settings->getNoiseParams("mgv7_np_terrain_base",    np_terrain_base)    &&
1170                 settings->getNoiseParams("mgv7_np_terrain_alt",     np_terrain_alt)     &&
1171                 settings->getNoiseParams("mgv7_np_terrain_persist", np_terrain_persist) &&
1172                 settings->getNoiseParams("mgv7_np_height_select",   np_height_select)   &&
1173                 settings->getNoiseParams("mgv7_np_filler_depth",    np_filler_depth)    &&
1174                 settings->getNoiseParams("mgv7_np_mount_height",    np_mount_height)    &&
1175                 settings->getNoiseParams("mgv7_np_ridge_uwater",    np_ridge_uwater)    &&
1176                 settings->getNoiseParams("mgv7_np_mountain",        np_mountain)        &&
1177                 settings->getNoiseParams("mgv7_np_ridge",           np_ridge);
1178         return success;
1179 }
1180
1181
1182 void MapgenV7Params::writeParams(Settings *settings) {
1183         settings->setNoiseParams("mgv7_np_terrain_base",    np_terrain_base);
1184         settings->setNoiseParams("mgv7_np_terrain_alt",     np_terrain_alt);
1185         settings->setNoiseParams("mgv7_np_terrain_persist", np_terrain_persist);
1186         settings->setNoiseParams("mgv7_np_height_select",   np_height_select);
1187         settings->setNoiseParams("mgv7_np_filler_depth",    np_filler_depth);
1188         settings->setNoiseParams("mgv7_np_mount_height",    np_mount_height);
1189         settings->setNoiseParams("mgv7_np_ridge_uwater",    np_ridge_uwater);
1190         settings->setNoiseParams("mgv7_np_mountain",        np_mountain);
1191         settings->setNoiseParams("mgv7_np_ridge",           np_ridge);
1192 }