src/script/lua_api/l_mapgen.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 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 "lua_api/l_mapgen.h"
  21 #include "lua_api/l_internal.h"
  22 #include "lua_api/l_vmanip.h"
  23 #include "common/c_converter.h"
  24 #include "common/c_content.h"
  25 #include "server.h"
  26 #include "environment.h"
  27 #include "biome.h"
  28 #include "emerge.h"
  29 #include "mapgen_v7.h"
  30 #include "main.h"
  31
  32
  33 struct EnumString ModApiMapgen::es_BiomeTerrainType[] =
  34 {
  35         {BIOME_TERRAIN_NORMAL, "normal"},
  36         {BIOME_TERRAIN_LIQUID, "liquid"},
  37         {BIOME_TERRAIN_NETHER, "nether"},
  38         {BIOME_TERRAIN_AETHER, "aether"},
  39         {BIOME_TERRAIN_FLAT,   "flat"},
  40         {0, NULL},
  41 };
  42
  43 struct EnumString ModApiMapgen::es_DecorationType[] =
  44 {
  45         {DECO_SIMPLE,    "simple"},
  46         {DECO_SCHEMATIC, "schematic"},
  47         {DECO_LSYSTEM,   "lsystem"},
  48         {0, NULL},
  49 };
  50
  51 struct EnumString ModApiMapgen::es_MapgenObject[] =
  52 {
  53         {MGOBJ_VMANIP,    "voxelmanip"},
  54         {MGOBJ_HEIGHTMAP, "heightmap"},
  55         {MGOBJ_BIOMEMAP,  "biomemap"},
  56         {MGOBJ_HEATMAP,   "heatmap"},
  57         {MGOBJ_HUMIDMAP,  "humiditymap"},
  58         {MGOBJ_GENNOTIFY, "gennotify"},
  59         {0, NULL},
  60 };
  61
  62 struct EnumString ModApiMapgen::es_OreType[] =
  63 {
  64         {ORE_SCATTER,  "scatter"},
  65         {ORE_SHEET,    "sheet"},
  66         {ORE_CLAYLIKE, "claylike"},
  67         {0, NULL},
  68 };
  69
  70 struct EnumString ModApiMapgen::es_Rotation[] =
  71 {
  72         {ROTATE_0,    "0"},
  73         {ROTATE_90,   "90"},
  74         {ROTATE_180,  "180"},
  75         {ROTATE_270,  "270"},
  76         {ROTATE_RAND, "random"},
  77         {0, NULL},
  78 };
  79
  80
  81 static void read_schematic_replacements(lua_State *L, DecoSchematic *dschem, int index)
  82 {
  83         lua_pushnil(L);
  84         while (lua_next(L, index)) {
  85                 // key at index -2 and value at index -1
  86                 std::string replace_from;
  87                 std::string replace_to;
  88                 if (lua_istable(L, -1)) {  // Old {{"x", "y"}, ...} format
  89                         lua_rawgeti(L, -1, 1);
  90                         replace_from = lua_tostring(L, -1);
  91                         lua_pop(L, 1);
  92                         lua_rawgeti(L, -1, 2);
  93                         replace_to = lua_tostring(L, -1);
  94                         lua_pop(L, 1);
  95                 } else {  // New {x = "y", ...} format
  96                         replace_from = lua_tostring(L, -2);
  97                         replace_to = lua_tostring(L, -1);
  98                 }
  99                 dschem->replacements[replace_from] = replace_to;
 100                 // removes value, keeps key for next iteration
 101                 lua_pop(L, 1);
 102         }
 103 }
 104
 105
 106 // get_mapgen_object(objectname)
 107 // returns the requested object used during map generation
 108 int ModApiMapgen::l_get_mapgen_object(lua_State *L)
 109 {
 110         const char *mgobjstr = lua_tostring(L, 1);
 111
 112         int mgobjint;
 113         if (!string_to_enum(es_MapgenObject, mgobjint, mgobjstr ? mgobjstr : ""))
 114                 return 0;
 115
 116         enum MapgenObject mgobj = (MapgenObject)mgobjint;
 117
 118         EmergeManager *emerge = getServer(L)->getEmergeManager();
 119         Mapgen *mg = emerge->getCurrentMapgen();
 120         if (!mg)
 121                 return 0;
 122
 123         size_t maplen = mg->csize.X * mg->csize.Z;
 124
 125         switch (mgobj) {
 126                 case MGOBJ_VMANIP: {
 127                         ManualMapVoxelManipulator *vm = mg->vm;
 128
 129                         // VoxelManip object
 130                         LuaVoxelManip *o = new LuaVoxelManip(vm, true);
 131                         *(void **)(lua_newuserdata(L, sizeof(void *))) = o;
 132                         luaL_getmetatable(L, "VoxelManip");
 133                         lua_setmetatable(L, -2);
 134
 135                         // emerged min pos
 136                         push_v3s16(L, vm->m_area.MinEdge);
 137
 138                         // emerged max pos
 139                         push_v3s16(L, vm->m_area.MaxEdge);
 140
 141                         return 3; }
 142                 case MGOBJ_HEIGHTMAP: {
 143                         if (!mg->heightmap)
 144                                 return 0;
 145
 146                         lua_newtable(L);
 147                         for (size_t i = 0; i != maplen; i++) {
 148                                 lua_pushinteger(L, mg->heightmap[i]);
 149                                 lua_rawseti(L, -2, i + 1);
 150                         }
 151
 152                         return 1; }
 153                 case MGOBJ_BIOMEMAP: {
 154                         if (!mg->biomemap)
 155                                 return 0;
 156
 157                         lua_newtable(L);
 158                         for (size_t i = 0; i != maplen; i++) {
 159                                 lua_pushinteger(L, mg->biomemap[i]);
 160                                 lua_rawseti(L, -2, i + 1);
 161                         }
 162
 163                         return 1; }
 164                 case MGOBJ_HEATMAP: { // Mapgen V7 specific objects
 165                 case MGOBJ_HUMIDMAP:
 166                         if (strcmp(emerge->params.mg_name.c_str(), "v7"))
 167                                 return 0;
 168
 169                         MapgenV7 *mgv7 = (MapgenV7 *)mg;
 170
 171                         float *arr = (mgobj == MGOBJ_HEATMAP) ?
 172                                 mgv7->noise_heat->result : mgv7->noise_humidity->result;
 173                         if (!arr)
 174                                 return 0;
 175
 176                         lua_newtable(L);
 177                         for (size_t i = 0; i != maplen; i++) {
 178                                 lua_pushnumber(L, arr[i]);
 179                                 lua_rawseti(L, -2, i + 1);
 180                         }
 181
 182                         return 1; }
 183                 case MGOBJ_GENNOTIFY: {
 184                         lua_newtable(L);
 185                         for (int i = 0; flagdesc_gennotify[i].name; i++) {
 186                                 if (!(emerge->gennotify & flagdesc_gennotify[i].flag))
 187                                         continue;
 188
 189                                 std::vector<v3s16> *posvec = mg->gen_notifications[i];
 190                                 if (!posvec)
 191                                         return 0;
 192
 193                                 lua_newtable(L);
 194                                 for (unsigned int j = 0; j != posvec->size(); j++) {
 195                                         push_v3s16(L, (*posvec)[j]);
 196                                         lua_rawseti(L, -2, j + 1);
 197                                 }
 198                                 lua_setfield(L, -2, flagdesc_gennotify[i].name);
 199
 200                                 posvec->clear();
 201                         }
 202
 203                         return 1; }
 204         }
 205
 206         return 0;
 207 }
 208
 209 // set_mapgen_params(params)
 210 // set mapgen parameters
 211 int ModApiMapgen::l_set_mapgen_params(lua_State *L)
 212 {
 213         if (!lua_istable(L, 1))
 214                 return 0;
 215
 216         EmergeManager *emerge = getServer(L)->getEmergeManager();
 217         assert(emerge);
 218
 219         std::string flagstr;
 220         u32 flags = 0, flagmask = 0;
 221
 222         lua_getfield(L, 1, "mgname");
 223         if (lua_isstring(L, -1)) {
 224                 emerge->params.mg_name = std::string(lua_tostring(L, -1));
 225                 delete emerge->params.sparams;
 226                 emerge->params.sparams = NULL;
 227         }
 228
 229         lua_getfield(L, 1, "seed");
 230         if (lua_isnumber(L, -1))
 231                 emerge->params.seed = lua_tointeger(L, -1);
 232
 233         lua_getfield(L, 1, "water_level");
 234         if (lua_isnumber(L, -1))
 235                 emerge->params.water_level = lua_tointeger(L, -1);
 236
 237         lua_getfield(L, 1, "flagmask");
 238         if (lua_isstring(L, -1)) {
 239                 flagstr = lua_tostring(L, -1);
 240                 emerge->params.flags &= ~readFlagString(flagstr, flagdesc_mapgen, NULL);
 241                 errorstream << "set_mapgen_params(): flagmask field is deprecated, "
 242                         "see lua_api.txt" << std::endl;
 243         }
 244
 245         if (getflagsfield(L, 1, "flags", flagdesc_mapgen, &flags, &flagmask)) {
 246                 emerge->params.flags &= ~flagmask;
 247                 emerge->params.flags |= flags;
 248         }
 249
 250         return 0;
 251 }
 252
 253 // set_noiseparam_defaults({np1={noise params}, ...})
 254 // set default values for noise parameters if not present in global settings
 255 int ModApiMapgen::l_set_noiseparam_defaults(lua_State *L)
 256 {
 257         NoiseParams np;
 258         std::string val, name;
 259
 260         if (!lua_istable(L, 1))
 261                 return 0;
 262
 263         lua_pushnil(L);
 264         while (lua_next(L, 1)) {
 265                 if (read_noiseparams_nc(L, -1, &np)) {
 266                         if (!serializeStructToString(&val, NOISEPARAMS_FMT_STR, &np))
 267                                 continue;
 268                         if (!lua_isstring(L, -2))
 269                                 continue;
 270
 271                         name = lua_tostring(L, -2);
 272                         g_settings->setDefault(name, val);
 273                 }
 274                 lua_pop(L, 1);
 275         }
 276
 277         return 0;
 278 }
 279
 280 // set_gen_notify(string)
 281 int ModApiMapgen::l_set_gen_notify(lua_State *L)
 282 {
 283         u32 flags = 0, flagmask = 0;
 284
 285         if (read_flags(L, 1, flagdesc_gennotify, &flags, &flagmask)) {
 286                 EmergeManager *emerge = getServer(L)->getEmergeManager();
 287                 emerge->gennotify = flags;
 288         }
 289
 290         return 0;
 291 }
 292
 293 // register_biome({lots of stuff})
 294 int ModApiMapgen::l_register_biome(lua_State *L)
 295 {
 296         int index = 1;
 297         luaL_checktype(L, index, LUA_TTABLE);
 298
 299         BiomeDefManager *bmgr = getServer(L)->getEmergeManager()->biomedef;
 300         if (!bmgr) {
 301                 verbosestream << "register_biome: BiomeDefManager not active" << std::endl;
 302                 return 0;
 303         }
 304
 305         enum BiomeTerrainType terrain = (BiomeTerrainType)getenumfield(L, index,
 306                                 "terrain_type", es_BiomeTerrainType, BIOME_TERRAIN_NORMAL);
 307         Biome *b = bmgr->createBiome(terrain);
 308
 309         b->name         = getstringfield_default(L, index, "name",
 310                                                                                                 "<no name>");
 311         b->nname_top    = getstringfield_default(L, index, "node_top",
 312                                                                                                 "mapgen_dirt_with_grass");
 313         b->nname_filler = getstringfield_default(L, index, "node_filler",
 314                                                                                                 "mapgen_dirt");
 315         b->nname_water  = getstringfield_default(L, index, "node_water",
 316                                                                                                 "mapgen_water_source");
 317         b->nname_dust   = getstringfield_default(L, index, "node_dust",
 318                                                                                                 "air");
 319         b->nname_dust_water = getstringfield_default(L, index, "node_dust_water",
 320                                                                                                 "mapgen_water_source");
 321
 322         b->depth_top      = getintfield_default(L, index, "depth_top",    1);
 323         b->depth_filler   = getintfield_default(L, index, "depth_filler", 3);
 324         b->height_min     = getintfield_default(L, index, "height_min",   0);
 325         b->height_max     = getintfield_default(L, index, "height_max",   0);
 326         b->heat_point     = getfloatfield_default(L, index, "heat_point",     0.);
 327         b->humidity_point = getfloatfield_default(L, index, "humidity_point", 0.);
 328
 329         b->flags        = 0; //reserved
 330         b->c_top        = CONTENT_IGNORE;
 331         b->c_filler     = CONTENT_IGNORE;
 332         b->c_water      = CONTENT_IGNORE;
 333         b->c_dust       = CONTENT_IGNORE;
 334         b->c_dust_water = CONTENT_IGNORE;
 335
 336         verbosestream << "register_biome: " << b->name << std::endl;
 337         bmgr->addBiome(b);
 338
 339         return 0;
 340 }
 341
 342 // register_decoration({lots of stuff})
 343 int ModApiMapgen::l_register_decoration(lua_State *L)
 344 {
 345         int index = 1;
 346         luaL_checktype(L, index, LUA_TTABLE);
 347
 348         EmergeManager *emerge = getServer(L)->getEmergeManager();
 349         BiomeDefManager *bdef = emerge->biomedef;
 350
 351         enum DecorationType decotype = (DecorationType)getenumfield(L, index,
 352                                 "deco_type", es_DecorationType, 0);
 353         if (decotype == 0) {
 354                 errorstream << "register_decoration: unrecognized "
 355                         "decoration placement type";
 356                 return 0;
 357         }
 358
 359         Decoration *deco = createDecoration(decotype);
 360         if (!deco) {
 361                 errorstream << "register_decoration: decoration placement type "
 362                         << decotype << " not implemented";
 363                 return 0;
 364         }
 365
 366         deco->c_place_on    = CONTENT_IGNORE;
 367         deco->place_on_name = getstringfield_default(L, index, "place_on", "ignore");
 368         deco->fill_ratio    = getfloatfield_default(L, index, "fill_ratio", 0.02);
 369         deco->sidelen       = getintfield_default(L, index, "sidelen", 8);
 370         if (deco->sidelen <= 0) {
 371                 errorstream << "register_decoration: sidelen must be "
 372                         "greater than 0" << std::endl;
 373                 delete deco;
 374                 return 0;
 375         }
 376
 377         lua_getfield(L, index, "noise_params");
 378         deco->np = read_noiseparams(L, -1);
 379         lua_pop(L, 1);
 380
 381         lua_getfield(L, index, "biomes");
 382         if (lua_istable(L, -1)) {
 383                 lua_pushnil(L);
 384                 while (lua_next(L, -2)) {
 385                         const char *s = lua_tostring(L, -1);
 386                         u8 biomeid = bdef->getBiomeIdByName(s);
 387                         if (biomeid)
 388                                 deco->biomes.insert(biomeid);
 389
 390                         lua_pop(L, 1);
 391                 }
 392                 lua_pop(L, 1);
 393         }
 394
 395         switch (decotype) {
 396                 case DECO_SIMPLE: {
 397                         DecoSimple *dsimple = (DecoSimple *)deco;
 398                         dsimple->c_deco     = CONTENT_IGNORE;
 399                         dsimple->c_spawnby  = CONTENT_IGNORE;
 400                         dsimple->spawnby_name    = getstringfield_default(L, index, "spawn_by", "air");
 401                         dsimple->deco_height     = getintfield_default(L, index, "height", 1);
 402                         dsimple->deco_height_max = getintfield_default(L, index, "height_max", 0);
 403                         dsimple->nspawnby        = getintfield_default(L, index, "num_spawn_by", -1);
 404
 405                         lua_getfield(L, index, "decoration");
 406                         if (lua_istable(L, -1)) {
 407                                 lua_pushnil(L);
 408                                 while (lua_next(L, -2)) {
 409                                         const char *s = lua_tostring(L, -1);
 410                                         std::string str(s);
 411                                         dsimple->decolist_names.push_back(str);
 412
 413                                         lua_pop(L, 1);
 414                                 }
 415                         } else if (lua_isstring(L, -1)) {
 416                                 dsimple->deco_name = std::string(lua_tostring(L, -1));
 417                         } else {
 418                                 dsimple->deco_name = std::string("air");
 419                         }
 420                         lua_pop(L, 1);
 421
 422                         if (dsimple->deco_height <= 0) {
 423                                 errorstream << "register_decoration: simple decoration height"
 424                                         " must be greater than 0" << std::endl;
 425                                 delete dsimple;
 426                                 return 0;
 427                         }
 428
 429                         break; }
 430                 case DECO_SCHEMATIC: {
 431                         DecoSchematic *dschem = (DecoSchematic *)deco;
 432
 433                         dschem->flags = 0;
 434                         getflagsfield(L, index, "flags", flagdesc_deco_schematic,
 435                                 &dschem->flags, NULL);
 436
 437                         dschem->rotation = (Rotation)getenumfield(L, index,
 438                                 "rotation", es_Rotation, ROTATE_0);
 439
 440                         lua_getfield(L, index, "replacements");
 441                         if (lua_istable(L, -1)) {
 442                                 read_schematic_replacements(L, dschem, lua_gettop(L));
 443                         }
 444                         lua_pop(L, 1);
 445
 446                         lua_getfield(L, index, "schematic");
 447                         if (!read_schematic(L, -1, dschem, getServer(L))) {
 448                                 delete dschem;
 449                                 return 0;
 450                         }
 451                         lua_pop(L, -1);
 452
 453                         if (!dschem->filename.empty() && !dschem->loadSchematicFile()) {
 454                                 errorstream << "register_decoration: failed to load schematic file '"
 455                                         << dschem->filename << "'" << std::endl;
 456                                 delete dschem;
 457                                 return 0;
 458                         }
 459                         break; }
 460                 case DECO_LSYSTEM: {
 461                         //DecoLSystem *decolsystem = (DecoLSystem *)deco;
 462
 463                         break; }
 464         }
 465
 466         emerge->decorations.push_back(deco);
 467
 468         verbosestream << "register_decoration: decoration '" << deco->getName()
 469                 << "' registered" << std::endl;
 470         return 0;
 471 }
 472
 473 // register_ore({lots of stuff})
 474 int ModApiMapgen::l_register_ore(lua_State *L)
 475 {
 476         int index = 1;
 477         luaL_checktype(L, index, LUA_TTABLE);
 478
 479         EmergeManager *emerge = getServer(L)->getEmergeManager();
 480
 481         enum OreType oretype = (OreType)getenumfield(L, index,
 482                                 "ore_type", es_OreType, ORE_SCATTER);
 483         Ore *ore = createOre(oretype);
 484         if (!ore) {
 485                 errorstream << "register_ore: ore_type "
 486                         << oretype << " not implemented";
 487                 return 0;
 488         }
 489
 490         ore->ore_name       = getstringfield_default(L, index, "ore", "");
 491         ore->ore_param2     = (u8)getintfield_default(L, index, "ore_param2", 0);
 492         ore->clust_scarcity = getintfield_default(L, index, "clust_scarcity", 1);
 493         ore->clust_num_ores = getintfield_default(L, index, "clust_num_ores", 1);
 494         ore->clust_size     = getintfield_default(L, index, "clust_size", 0);
 495         ore->height_min     = getintfield_default(L, index, "height_min", 0);
 496         ore->height_max     = getintfield_default(L, index, "height_max", 0);
 497         ore->nthresh        = getfloatfield_default(L, index, "noise_threshhold", 0.);
 498         ore->flags          = 0;
 499         getflagsfield(L, index, "flags", flagdesc_ore, &ore->flags, NULL);
 500
 501         lua_getfield(L, index, "wherein");
 502         if (lua_istable(L, -1)) {
 503                 int  i = lua_gettop(L);
 504                 lua_pushnil(L);
 505                 while(lua_next(L, i) != 0) {
 506                         ore->wherein_names.push_back(lua_tostring(L, -1));
 507                         lua_pop(L, 1);
 508                 }
 509         } else if (lua_isstring(L, -1)) {
 510                 ore->wherein_names.push_back(lua_tostring(L, -1));
 511         } else {
 512                 ore->wherein_names.push_back("");
 513         }
 514         lua_pop(L, 1);
 515
 516         lua_getfield(L, index, "noise_params");
 517         ore->np = read_noiseparams(L, -1);
 518         lua_pop(L, 1);
 519
 520         ore->noise = NULL;
 521
 522         if (ore->clust_scarcity <= 0 || ore->clust_num_ores <= 0) {
 523                 errorstream << "register_ore: clust_scarcity and clust_num_ores"
 524                         "must be greater than 0" << std::endl;
 525                 delete ore;
 526                 return 0;
 527         }
 528
 529         emerge->ores.push_back(ore);
 530
 531         verbosestream << "register_ore: ore '" << ore->ore_name
 532                 << "' registered" << std::endl;
 533         return 0;
 534 }
 535
 536 // create_schematic(p1, p2, probability_list, filename)
 537 int ModApiMapgen::l_create_schematic(lua_State *L)
 538 {
 539         DecoSchematic dschem;
 540
 541         Map *map = &(getEnv(L)->getMap());
 542         INodeDefManager *ndef = getServer(L)->getNodeDefManager();
 543
 544         v3s16 p1 = read_v3s16(L, 1);
 545         v3s16 p2 = read_v3s16(L, 2);
 546         sortBoxVerticies(p1, p2);
 547
 548         std::vector<std::pair<v3s16, u8> > prob_list;
 549         if (lua_istable(L, 3)) {
 550                 lua_pushnil(L);
 551                 while (lua_next(L, 3)) {
 552                         if (lua_istable(L, -1)) {
 553                                 lua_getfield(L, -1, "pos");
 554                                 v3s16 pos = read_v3s16(L, -1);
 555                                 lua_pop(L, 1);
 556
 557                                 u8 prob = getintfield_default(L, -1, "prob", MTSCHEM_PROB_ALWAYS);
 558                                 prob_list.push_back(std::make_pair(pos, prob));
 559                         }
 560
 561                         lua_pop(L, 1);
 562                 }
 563         }
 564
 565         std::vector<std::pair<s16, u8> > slice_prob_list;
 566         if (lua_istable(L, 5)) {
 567                 lua_pushnil(L);
 568                 while (lua_next(L, 5)) {
 569                         if (lua_istable(L, -1)) {
 570                                 s16 ypos = getintfield_default(L, -1, "ypos", 0);
 571                                 u8 prob  = getintfield_default(L, -1, "prob", MTSCHEM_PROB_ALWAYS);
 572                                 slice_prob_list.push_back(std::make_pair(ypos, prob));
 573                         }
 574
 575                         lua_pop(L, 1);
 576                 }
 577         }
 578
 579         const char *s = lua_tostring(L, 4);
 580         dschem.filename = std::string(s ? s : "");
 581
 582         if (!dschem.getSchematicFromMap(map, p1, p2)) {
 583                 errorstream << "create_schematic: failed to get schematic "
 584                         "from map" << std::endl;
 585                 return 0;
 586         }
 587
 588         dschem.applyProbabilities(p1, &prob_list, &slice_prob_list);
 589
 590         dschem.saveSchematicFile(ndef);
 591         actionstream << "create_schematic: saved schematic file '"
 592                 << dschem.filename << "'." << std::endl;
 593
 594         return 1;
 595 }
 596
 597
 598 // place_schematic(p, schematic, rotation, replacement)
 599 int ModApiMapgen::l_place_schematic(lua_State *L)
 600 {
 601         DecoSchematic dschem;
 602
 603         Map *map = &(getEnv(L)->getMap());
 604         INodeDefManager *ndef = getServer(L)->getNodeDefManager();
 605
 606         v3s16 p = read_v3s16(L, 1);
 607         if (!read_schematic(L, 2, &dschem, getServer(L)))
 608                 return 0;
 609
 610         int rot = ROTATE_0;
 611         if (lua_isstring(L, 3))
 612                 string_to_enum(es_Rotation, rot, std::string(lua_tostring(L, 3)));
 613
 614         dschem.rotation = (Rotation)rot;
 615
 616         if (lua_istable(L, 4)) {
 617                 read_schematic_replacements(L, &dschem, 4);
 618         }
 619
 620         bool force_placement = true;
 621         if (lua_isboolean(L, 5))
 622                 force_placement = lua_toboolean(L, 5);
 623
 624         if (!dschem.filename.empty()) {
 625                 if (!dschem.loadSchematicFile()) {
 626                         errorstream << "place_schematic: failed to load schematic file '"
 627                                 << dschem.filename << "'" << std::endl;
 628                         return 0;
 629                 }
 630                 dschem.resolveNodeNames(ndef);
 631         }
 632
 633         dschem.placeStructure(map, p, force_placement);
 634
 635         return 1;
 636 }
 637
 638 void ModApiMapgen::Initialize(lua_State *L, int top)
 639 {
 640         API_FCT(get_mapgen_object);
 641
 642         API_FCT(set_mapgen_params);
 643         API_FCT(set_noiseparam_defaults);
 644         API_FCT(set_gen_notify);
 645
 646         API_FCT(register_biome);
 647         API_FCT(register_decoration);
 648         API_FCT(register_ore);
 649
 650         API_FCT(create_schematic);
 651         API_FCT(place_schematic);
 652 }