src/nodedef.cpp

   1 /*
   2 Minetest-c55
   3 Copyright (C) 2010 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 "nodedef.h"
  21
  22 #include "main.h" // For g_settings
  23 #include "itemdef.h"
  24 #ifndef SERVER
  25 #include "tile.h"
  26 #endif
  27 #include "log.h"
  28 #include "settings.h"
  29 #include "nameidmapping.h"
  30
  31 /*
  32         NodeBox
  33 */
  34
  35 void NodeBox::serialize(std::ostream &os) const
  36 {
  37         writeU8(os, 0); // version
  38         writeU8(os, type);
  39         writeV3F1000(os, fixed.MinEdge);
  40         writeV3F1000(os, fixed.MaxEdge);
  41         writeV3F1000(os, wall_top.MinEdge);
  42         writeV3F1000(os, wall_top.MaxEdge);
  43         writeV3F1000(os, wall_bottom.MinEdge);
  44         writeV3F1000(os, wall_bottom.MaxEdge);
  45         writeV3F1000(os, wall_side.MinEdge);
  46         writeV3F1000(os, wall_side.MaxEdge);
  47 }
  48
  49 void NodeBox::deSerialize(std::istream &is)
  50 {
  51         int version = readU8(is);
  52         if(version != 0)
  53                 throw SerializationError("unsupported NodeBox version");
  54         type = (enum NodeBoxType)readU8(is);
  55         fixed.MinEdge = readV3F1000(is);
  56         fixed.MaxEdge = readV3F1000(is);
  57         wall_top.MinEdge = readV3F1000(is);
  58         wall_top.MaxEdge = readV3F1000(is);
  59         wall_bottom.MinEdge = readV3F1000(is);
  60         wall_bottom.MaxEdge = readV3F1000(is);
  61         wall_side.MinEdge = readV3F1000(is);
  62         wall_side.MaxEdge = readV3F1000(is);
  63 }
  64
  65 /*
  66         MaterialSpec
  67 */
  68
  69 void MaterialSpec::serialize(std::ostream &os) const
  70 {
  71         os<<serializeString(tname);
  72         writeU8(os, backface_culling);
  73 }
  74
  75 void MaterialSpec::deSerialize(std::istream &is)
  76 {
  77         tname = deSerializeString(is);
  78         backface_culling = readU8(is);
  79 }
  80
  81 /*
  82         SimpleSoundSpec serialization
  83 */
  84
  85 static void serializeSimpleSoundSpec(const SimpleSoundSpec &ss,
  86                 std::ostream &os)
  87 {
  88         os<<serializeString(ss.name);
  89         writeF1000(os, ss.gain);
  90 }
  91 static void deSerializeSimpleSoundSpec(SimpleSoundSpec &ss, std::istream &is)
  92 {
  93         ss.name = deSerializeString(is);
  94         ss.gain = readF1000(is);
  95 }
  96
  97 /*
  98         ContentFeatures
  99 */
 100
 101 ContentFeatures::ContentFeatures()
 102 {
 103         reset();
 104 }
 105
 106 ContentFeatures::~ContentFeatures()
 107 {
 108 }
 109
 110 void ContentFeatures::reset()
 111 {
 112         /*
 113                 Cached stuff
 114         */
 115 #ifndef SERVER
 116         solidness = 2;
 117         visual_solidness = 0;
 118         backface_culling = true;
 119 #endif
 120         has_on_construct = false;
 121         has_on_destruct = false;
 122         has_after_destruct = false;
 123         /*
 124                 Actual data
 125
 126                 NOTE: Most of this is always overridden by the default values given
 127                       in builtin.lua
 128         */
 129         name = "";
 130         groups.clear();
 131         // Unknown nodes can be dug
 132         groups["dig_immediate"] = 2;
 133         drawtype = NDT_NORMAL;
 134         visual_scale = 1.0;
 135         for(u32 i=0; i<6; i++)
 136                 tname_tiles[i] = "";
 137         for(u16 j=0; j<CF_SPECIAL_COUNT; j++)
 138                 mspec_special[j] = MaterialSpec();
 139         alpha = 255;
 140         post_effect_color = video::SColor(0, 0, 0, 0);
 141         param_type = CPT_NONE;
 142         param_type_2 = CPT2_NONE;
 143         is_ground_content = false;
 144         light_propagates = false;
 145         sunlight_propagates = false;
 146         walkable = true;
 147         pointable = true;
 148         diggable = true;
 149         climbable = false;
 150         buildable_to = false;
 151         liquid_type = LIQUID_NONE;
 152         liquid_alternative_flowing = "";
 153         liquid_alternative_source = "";
 154         liquid_viscosity = 0;
 155         light_source = 0;
 156         damage_per_second = 0;
 157         selection_box = NodeBox();
 158         legacy_facedir_simple = false;
 159         legacy_wallmounted = false;
 160         sound_footstep = SimpleSoundSpec();
 161         sound_dig = SimpleSoundSpec("__group");
 162         sound_dug = SimpleSoundSpec();
 163 }
 164
 165 void ContentFeatures::serialize(std::ostream &os)
 166 {
 167         writeU8(os, 3); // version
 168         os<<serializeString(name);
 169         writeU16(os, groups.size());
 170         for(ItemGroupList::const_iterator
 171                         i = groups.begin(); i != groups.end(); i++){
 172                 os<<serializeString(i->first);
 173                 writeS16(os, i->second);
 174         }
 175         writeU8(os, drawtype);
 176         writeF1000(os, visual_scale);
 177         writeU8(os, 6);
 178         for(u32 i=0; i<6; i++)
 179                 os<<serializeString(tname_tiles[i]);
 180         writeU8(os, CF_SPECIAL_COUNT);
 181         for(u32 i=0; i<CF_SPECIAL_COUNT; i++){
 182                 mspec_special[i].serialize(os);
 183         }
 184         writeU8(os, alpha);
 185         writeU8(os, post_effect_color.getAlpha());
 186         writeU8(os, post_effect_color.getRed());
 187         writeU8(os, post_effect_color.getGreen());
 188         writeU8(os, post_effect_color.getBlue());
 189         writeU8(os, param_type);
 190         writeU8(os, param_type_2);
 191         writeU8(os, is_ground_content);
 192         writeU8(os, light_propagates);
 193         writeU8(os, sunlight_propagates);
 194         writeU8(os, walkable);
 195         writeU8(os, pointable);
 196         writeU8(os, diggable);
 197         writeU8(os, climbable);
 198         writeU8(os, buildable_to);
 199         os<<serializeString(""); // legacy: used to be metadata_name
 200         writeU8(os, liquid_type);
 201         os<<serializeString(liquid_alternative_flowing);
 202         os<<serializeString(liquid_alternative_source);
 203         writeU8(os, liquid_viscosity);
 204         writeU8(os, light_source);
 205         writeU32(os, damage_per_second);
 206         selection_box.serialize(os);
 207         writeU8(os, legacy_facedir_simple);
 208         writeU8(os, legacy_wallmounted);
 209         serializeSimpleSoundSpec(sound_footstep, os);
 210         serializeSimpleSoundSpec(sound_dig, os);
 211         serializeSimpleSoundSpec(sound_dug, os);
 212 }
 213
 214 void ContentFeatures::deSerialize(std::istream &is)
 215 {
 216         int version = readU8(is);
 217         if(version != 3)
 218                 throw SerializationError("unsupported ContentFeatures version");
 219         name = deSerializeString(is);
 220         groups.clear();
 221         u32 groups_size = readU16(is);
 222         for(u32 i=0; i<groups_size; i++){
 223                 std::string name = deSerializeString(is);
 224                 int value = readS16(is);
 225                 groups[name] = value;
 226         }
 227         drawtype = (enum NodeDrawType)readU8(is);
 228         visual_scale = readF1000(is);
 229         if(readU8(is) != 6)
 230                 throw SerializationError("unsupported tile count");
 231         for(u32 i=0; i<6; i++)
 232                 tname_tiles[i] = deSerializeString(is);
 233         if(readU8(is) != CF_SPECIAL_COUNT)
 234                 throw SerializationError("unsupported CF_SPECIAL_COUNT");
 235         for(u32 i=0; i<CF_SPECIAL_COUNT; i++){
 236                 mspec_special[i].deSerialize(is);
 237         }
 238         alpha = readU8(is);
 239         post_effect_color.setAlpha(readU8(is));
 240         post_effect_color.setRed(readU8(is));
 241         post_effect_color.setGreen(readU8(is));
 242         post_effect_color.setBlue(readU8(is));
 243         param_type = (enum ContentParamType)readU8(is);
 244         param_type_2 = (enum ContentParamType2)readU8(is);
 245         is_ground_content = readU8(is);
 246         light_propagates = readU8(is);
 247         sunlight_propagates = readU8(is);
 248         walkable = readU8(is);
 249         pointable = readU8(is);
 250         diggable = readU8(is);
 251         climbable = readU8(is);
 252         buildable_to = readU8(is);
 253         deSerializeString(is); // legacy: used to be metadata_name
 254         liquid_type = (enum LiquidType)readU8(is);
 255         liquid_alternative_flowing = deSerializeString(is);
 256         liquid_alternative_source = deSerializeString(is);
 257         liquid_viscosity = readU8(is);
 258         light_source = readU8(is);
 259         damage_per_second = readU32(is);
 260         selection_box.deSerialize(is);
 261         legacy_facedir_simple = readU8(is);
 262         legacy_wallmounted = readU8(is);
 263         // If you add anything here, insert it primarily inside the try-catch
 264         // block to not need to increase the version.
 265         try{
 266                 deSerializeSimpleSoundSpec(sound_footstep, is);
 267                 deSerializeSimpleSoundSpec(sound_dig, is);
 268                 deSerializeSimpleSoundSpec(sound_dug, is);
 269         }catch(SerializationError &e) {};
 270 }
 271
 272 /*
 273         CNodeDefManager
 274 */
 275
 276 class CNodeDefManager: public IWritableNodeDefManager
 277 {
 278 public:
 279         void clear()
 280         {
 281                 m_name_id_mapping.clear();
 282                 m_name_id_mapping_with_aliases.clear();
 283
 284                 for(u16 i=0; i<=MAX_CONTENT; i++)
 285                 {
 286                         ContentFeatures &f = m_content_features[i];
 287                         f.reset(); // Reset to defaults
 288                 }
 289
 290                 // Set CONTENT_AIR
 291                 {
 292                         ContentFeatures f;
 293                         f.name = "air";
 294                         f.drawtype = NDT_AIRLIKE;
 295                         f.param_type = CPT_LIGHT;
 296                         f.light_propagates = true;
 297                         f.sunlight_propagates = true;
 298                         f.walkable = false;
 299                         f.pointable = false;
 300                         f.diggable = false;
 301                         f.buildable_to = true;
 302                         // Insert directly into containers
 303                         content_t c = CONTENT_AIR;
 304                         m_content_features[c] = f;
 305                         addNameIdMapping(c, f.name);
 306                 }
 307                 // Set CONTENT_IGNORE
 308                 {
 309                         ContentFeatures f;
 310                         f.name = "ignore";
 311                         f.drawtype = NDT_AIRLIKE;
 312                         f.param_type = CPT_NONE;
 313                         f.light_propagates = false;
 314                         f.sunlight_propagates = false;
 315                         f.walkable = false;
 316                         f.pointable = false;
 317                         f.diggable = false;
 318                         // A way to remove accidental CONTENT_IGNOREs
 319                         f.buildable_to = true;
 320                         // Insert directly into containers
 321                         content_t c = CONTENT_IGNORE;
 322                         m_content_features[c] = f;
 323                         addNameIdMapping(c, f.name);
 324                 }
 325         }
 326         // CONTENT_IGNORE = not found
 327         content_t getFreeId(bool require_full_param2)
 328         {
 329                 // If allowed, first search in the large 4-bit-param2 pool
 330                 if(!require_full_param2){
 331                         for(u16 i=0x800; i<=0xfff; i++){
 332                                 const ContentFeatures &f = m_content_features[i];
 333                                 if(f.name == "")
 334                                         return i;
 335                         }
 336                 }
 337                 // Then search from the small 8-bit-param2 pool
 338                 for(u16 i=0; i<=125; i++){
 339                         const ContentFeatures &f = m_content_features[i];
 340                         if(f.name == "")
 341                                 return i;
 342                 }
 343                 return CONTENT_IGNORE;
 344         }
 345         CNodeDefManager()
 346         {
 347                 clear();
 348         }
 349         virtual ~CNodeDefManager()
 350         {
 351         }
 352         virtual IWritableNodeDefManager* clone()
 353         {
 354                 CNodeDefManager *mgr = new CNodeDefManager();
 355                 for(u16 i=0; i<=MAX_CONTENT; i++)
 356                 {
 357                         mgr->set(i, get(i));
 358                 }
 359                 return mgr;
 360         }
 361         virtual const ContentFeatures& get(content_t c) const
 362         {
 363                 assert(c <= MAX_CONTENT);
 364                 return m_content_features[c];
 365         }
 366         virtual const ContentFeatures& get(const MapNode &n) const
 367         {
 368                 return get(n.getContent());
 369         }
 370         virtual bool getId(const std::string &name, content_t &result) const
 371         {
 372                 std::map<std::string, content_t>::const_iterator
 373                         i = m_name_id_mapping_with_aliases.find(name);
 374                 if(i == m_name_id_mapping_with_aliases.end())
 375                         return false;
 376                 result = i->second;
 377                 return true;
 378         }
 379         virtual content_t getId(const std::string &name) const
 380         {
 381                 content_t id = CONTENT_IGNORE;
 382                 getId(name, id);
 383                 return id;
 384         }
 385         virtual void getIds(const std::string &name, std::set<content_t> &result)
 386                         const
 387         {
 388                 if(name.substr(0,6) != "group:"){
 389                         content_t id = CONTENT_IGNORE;
 390                         if(getId(name, id))
 391                                 result.insert(id);
 392                         return;
 393                 }
 394                 std::string group = name.substr(6);
 395                 for(u16 id=0; id<=MAX_CONTENT; id++)
 396                 {
 397                         const ContentFeatures &f = m_content_features[id];
 398                         if(f.name == "") // Quickly discard undefined nodes
 399                                 continue;
 400                         if(itemgroup_get(f.groups, group) != 0)
 401                                 result.insert(id);
 402                 }
 403         }
 404         virtual const ContentFeatures& get(const std::string &name) const
 405         {
 406                 content_t id = CONTENT_IGNORE;
 407                 getId(name, id);
 408                 return get(id);
 409         }
 410         // IWritableNodeDefManager
 411         virtual void set(content_t c, const ContentFeatures &def)
 412         {
 413                 verbosestream<<"registerNode: registering content id \""<<c
 414                                 <<"\": name=\""<<def.name<<"\""<<std::endl;
 415                 assert(c <= MAX_CONTENT);
 416                 // Don't allow redefining CONTENT_IGNORE (but allow air)
 417                 if(def.name == "ignore" || c == CONTENT_IGNORE){
 418                         infostream<<"registerNode: WARNING: Ignoring "
 419                                         <<"CONTENT_IGNORE redefinition"<<std::endl;
 420                         return;
 421                 }
 422                 // Check that the special contents are not redefined as different id
 423                 // because it would mess up everything
 424                 if((def.name == "ignore" && c != CONTENT_IGNORE) ||
 425                         (def.name == "air" && c != CONTENT_AIR)){
 426                         errorstream<<"registerNode: IGNORING ERROR: "
 427                                         <<"trying to register built-in type \""
 428                                         <<def.name<<"\" as different id"<<std::endl;
 429                         return;
 430                 }
 431                 m_content_features[c] = def;
 432                 if(def.name != "")
 433                         addNameIdMapping(c, def.name);
 434         }
 435         virtual content_t set(const std::string &name,
 436                         const ContentFeatures &def)
 437         {
 438                 assert(name == def.name);
 439                 u16 id = CONTENT_IGNORE;
 440                 bool found = m_name_id_mapping.getId(name, id);  // ignore aliases
 441                 if(!found){
 442                         // Determine if full param2 is required
 443                         bool require_full_param2 = (
 444                                 def.param_type_2 == CPT2_FULL
 445                                 ||
 446                                 def.param_type_2 == CPT2_FLOWINGLIQUID
 447                                 ||
 448                                 def.legacy_wallmounted
 449                         );
 450                         // Get some id
 451                         id = getFreeId(require_full_param2);
 452                         if(id == CONTENT_IGNORE)
 453                                 return CONTENT_IGNORE;
 454                         if(name != "")
 455                                 addNameIdMapping(id, name);
 456                 }
 457                 set(id, def);
 458                 return id;
 459         }
 460         virtual content_t allocateDummy(const std::string &name)
 461         {
 462                 assert(name != "");
 463                 ContentFeatures f;
 464                 f.name = name;
 465                 return set(name, f);
 466         }
 467         virtual void updateAliases(IItemDefManager *idef)
 468         {
 469                 std::set<std::string> all = idef->getAll();
 470                 m_name_id_mapping_with_aliases.clear();
 471                 for(std::set<std::string>::iterator
 472                                 i = all.begin(); i != all.end(); i++)
 473                 {
 474                         std::string name = *i;
 475                         std::string convert_to = idef->getAlias(name);
 476                         content_t id;
 477                         if(m_name_id_mapping.getId(convert_to, id))
 478                         {
 479                                 m_name_id_mapping_with_aliases.insert(
 480                                                 std::make_pair(name, id));
 481                         }
 482                 }
 483         }
 484         virtual void updateTextures(ITextureSource *tsrc)
 485         {
 486 #ifndef SERVER
 487                 infostream<<"CNodeDefManager::updateTextures(): Updating "
 488                                 <<"textures in node definitions"<<std::endl;
 489
 490                 bool new_style_water = g_settings->getBool("new_style_water");
 491                 bool new_style_leaves = g_settings->getBool("new_style_leaves");
 492                 bool opaque_water = g_settings->getBool("opaque_water");
 493
 494                 for(u16 i=0; i<=MAX_CONTENT; i++)
 495                 {
 496                         ContentFeatures *f = &m_content_features[i];
 497
 498                         std::string tname_tiles[6];
 499                         for(u32 j=0; j<6; j++)
 500                         {
 501                                 tname_tiles[j] = f->tname_tiles[j];
 502                                 if(tname_tiles[j] == "")
 503                                         tname_tiles[j] = "unknown_block.png";
 504                         }
 505
 506                         switch(f->drawtype){
 507                         default:
 508                         case NDT_NORMAL:
 509                                 f->solidness = 2;
 510                                 break;
 511                         case NDT_AIRLIKE:
 512                                 f->solidness = 0;
 513                                 break;
 514                         case NDT_LIQUID:
 515                                 assert(f->liquid_type == LIQUID_SOURCE);
 516                                 if(opaque_water)
 517                                         f->alpha = 255;
 518                                 if(new_style_water){
 519                                         f->solidness = 0;
 520                                 } else {
 521                                         f->solidness = 1;
 522                                         if(f->alpha == 255)
 523                                                 f->solidness = 2;
 524                                         f->backface_culling = false;
 525                                 }
 526                                 break;
 527                         case NDT_FLOWINGLIQUID:
 528                                 assert(f->liquid_type == LIQUID_FLOWING);
 529                                 f->solidness = 0;
 530                                 if(opaque_water)
 531                                         f->alpha = 255;
 532                                 break;
 533                         case NDT_GLASSLIKE:
 534                                 f->solidness = 0;
 535                                 f->visual_solidness = 1;
 536                                 break;
 537                         case NDT_ALLFACES:
 538                                 f->solidness = 0;
 539                                 f->visual_solidness = 1;
 540                                 break;
 541                         case NDT_ALLFACES_OPTIONAL:
 542                                 if(new_style_leaves){
 543                                         f->drawtype = NDT_ALLFACES;
 544                                         f->solidness = 0;
 545                                         f->visual_solidness = 1;
 546                                 } else {
 547                                         f->drawtype = NDT_NORMAL;
 548                                         f->solidness = 2;
 549                                         for(u32 i=0; i<6; i++){
 550                                                 tname_tiles[i] += std::string("^[noalpha");
 551                                         }
 552                                 }
 553                                 break;
 554                         case NDT_TORCHLIKE:
 555                         case NDT_SIGNLIKE:
 556                         case NDT_PLANTLIKE:
 557                         case NDT_FENCELIKE:
 558                         case NDT_RAILLIKE:
 559                                 f->solidness = 0;
 560                                 break;
 561                         }
 562
 563                         // Tile textures
 564                         for(u16 j=0; j<6; j++){
 565                                 f->tiles[j].texture = tsrc->getTexture(tname_tiles[j]);
 566                                 f->tiles[j].alpha = f->alpha;
 567                                 if(f->alpha == 255)
 568                                         f->tiles[j].material_type = MATERIAL_ALPHA_SIMPLE;
 569                                 else
 570                                         f->tiles[j].material_type = MATERIAL_ALPHA_VERTEX;
 571                                 f->tiles[j].material_flags = 0;
 572                                 if(f->backface_culling)
 573                                         f->tiles[j].material_flags |= MATERIAL_FLAG_BACKFACE_CULLING;
 574                         }
 575                         // Special tiles
 576                         for(u16 j=0; j<CF_SPECIAL_COUNT; j++){
 577                                 f->special_tiles[j].texture = tsrc->getTexture(f->mspec_special[j].tname);
 578                                 f->special_tiles[j].alpha = f->alpha;
 579                                 if(f->alpha == 255)
 580                                         f->special_tiles[j].material_type = MATERIAL_ALPHA_SIMPLE;
 581                                 else
 582                                         f->special_tiles[j].material_type = MATERIAL_ALPHA_VERTEX;
 583                                 f->special_tiles[j].material_flags = 0;
 584                                 if(f->mspec_special[j].backface_culling)
 585                                         f->special_tiles[j].material_flags |= MATERIAL_FLAG_BACKFACE_CULLING;
 586                         }
 587                 }
 588 #endif
 589         }
 590         void serialize(std::ostream &os)
 591         {
 592                 writeU8(os, 1); // version
 593                 u16 count = 0;
 594                 std::ostringstream os2(std::ios::binary);
 595                 for(u16 i=0; i<=MAX_CONTENT; i++)
 596                 {
 597                         if(i == CONTENT_IGNORE || i == CONTENT_AIR)
 598                                 continue;
 599                         ContentFeatures *f = &m_content_features[i];
 600                         if(f->name == "")
 601                                 continue;
 602                         writeU16(os2, i);
 603                         // Wrap it in a string to allow different lengths without
 604                         // strict version incompatibilities
 605                         std::ostringstream wrapper_os(std::ios::binary);
 606                         f->serialize(wrapper_os);
 607                         os2<<serializeString(wrapper_os.str());
 608                         count++;
 609                 }
 610                 writeU16(os, count);
 611                 os<<serializeLongString(os2.str());
 612         }
 613         void deSerialize(std::istream &is)
 614         {
 615                 clear();
 616                 int version = readU8(is);
 617                 if(version != 1)
 618                         throw SerializationError("unsupported NodeDefinitionManager version");
 619                 u16 count = readU16(is);
 620                 std::istringstream is2(deSerializeLongString(is), std::ios::binary);
 621                 for(u16 n=0; n<count; n++){
 622                         u16 i = readU16(is2);
 623                         if(i > MAX_CONTENT){
 624                                 errorstream<<"ContentFeatures::deSerialize(): "
 625                                                 <<"Too large content id: "<<i<<std::endl;
 626                                 continue;
 627                         }
 628                         /*// Do not deserialize special types
 629                         if(i == CONTENT_IGNORE || i == CONTENT_AIR)
 630                                 continue;*/
 631                         ContentFeatures *f = &m_content_features[i];
 632                         // Read it from the string wrapper
 633                         std::string wrapper = deSerializeString(is2);
 634                         std::istringstream wrapper_is(wrapper, std::ios::binary);
 635                         f->deSerialize(wrapper_is);
 636                         if(f->name != "")
 637                                 addNameIdMapping(i, f->name);
 638                 }
 639         }
 640 private:
 641         void addNameIdMapping(content_t i, std::string name)
 642         {
 643                 m_name_id_mapping.set(i, name);
 644                 m_name_id_mapping_with_aliases.insert(std::make_pair(name, i));
 645         }
 646 private:
 647         // Features indexed by id
 648         ContentFeatures m_content_features[MAX_CONTENT+1];
 649         // A mapping for fast converting back and forth between names and ids
 650         NameIdMapping m_name_id_mapping;
 651         // Like m_name_id_mapping, but only from names to ids, and includes
 652         // item aliases too. Updated by updateAliases()
 653         // Note: Not serialized.
 654         std::map<std::string, content_t> m_name_id_mapping_with_aliases;
 655 };
 656
 657 IWritableNodeDefManager* createNodeDefManager()
 658 {
 659         return new CNodeDefManager();
 660 }
 661