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 General Public License as published by
   7 the Free Software Foundation; either version 2 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 General Public License for more details.
  14
  15 You should have received a copy of the GNU 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         /*
 121                 Actual data
 122
 123                 NOTE: Most of this is always overridden by the default values given
 124                       in builtin.lua
 125         */
 126         name = "";
 127         groups.clear();
 128         // Unknown nodes can be dug
 129         groups["dig_immediate"] = 2;
 130         drawtype = NDT_NORMAL;
 131         visual_scale = 1.0;
 132         for(u32 i=0; i<6; i++)
 133                 tname_tiles[i] = "";
 134         for(u16 j=0; j<CF_SPECIAL_COUNT; j++)
 135                 mspec_special[j] = MaterialSpec();
 136         alpha = 255;
 137         post_effect_color = video::SColor(0, 0, 0, 0);
 138         param_type = CPT_NONE;
 139         param_type_2 = CPT2_NONE;
 140         is_ground_content = false;
 141         light_propagates = false;
 142         sunlight_propagates = false;
 143         walkable = true;
 144         pointable = true;
 145         diggable = true;
 146         climbable = false;
 147         buildable_to = false;
 148         liquid_type = LIQUID_NONE;
 149         liquid_alternative_flowing = "";
 150         liquid_alternative_source = "";
 151         liquid_viscosity = 0;
 152         light_source = 0;
 153         damage_per_second = 0;
 154         selection_box = NodeBox();
 155         legacy_facedir_simple = false;
 156         legacy_wallmounted = false;
 157         sound_footstep = SimpleSoundSpec();
 158         sound_dig = SimpleSoundSpec("__group");
 159         sound_dug = SimpleSoundSpec();
 160 }
 161
 162 void ContentFeatures::serialize(std::ostream &os)
 163 {
 164         writeU8(os, 3); // version
 165         os<<serializeString(name);
 166         writeU16(os, groups.size());
 167         for(ItemGroupList::const_iterator
 168                         i = groups.begin(); i != groups.end(); i++){
 169                 os<<serializeString(i->first);
 170                 writeS16(os, i->second);
 171         }
 172         writeU8(os, drawtype);
 173         writeF1000(os, visual_scale);
 174         writeU8(os, 6);
 175         for(u32 i=0; i<6; i++)
 176                 os<<serializeString(tname_tiles[i]);
 177         writeU8(os, CF_SPECIAL_COUNT);
 178         for(u32 i=0; i<CF_SPECIAL_COUNT; i++){
 179                 mspec_special[i].serialize(os);
 180         }
 181         writeU8(os, alpha);
 182         writeU8(os, post_effect_color.getAlpha());
 183         writeU8(os, post_effect_color.getRed());
 184         writeU8(os, post_effect_color.getGreen());
 185         writeU8(os, post_effect_color.getBlue());
 186         writeU8(os, param_type);
 187         writeU8(os, param_type_2);
 188         writeU8(os, is_ground_content);
 189         writeU8(os, light_propagates);
 190         writeU8(os, sunlight_propagates);
 191         writeU8(os, walkable);
 192         writeU8(os, pointable);
 193         writeU8(os, diggable);
 194         writeU8(os, climbable);
 195         writeU8(os, buildable_to);
 196         os<<serializeString(""); // legacy: used to be metadata_name
 197         writeU8(os, liquid_type);
 198         os<<serializeString(liquid_alternative_flowing);
 199         os<<serializeString(liquid_alternative_source);
 200         writeU8(os, liquid_viscosity);
 201         writeU8(os, light_source);
 202         writeU32(os, damage_per_second);
 203         selection_box.serialize(os);
 204         writeU8(os, legacy_facedir_simple);
 205         writeU8(os, legacy_wallmounted);
 206         serializeSimpleSoundSpec(sound_footstep, os);
 207         serializeSimpleSoundSpec(sound_dig, os);
 208         serializeSimpleSoundSpec(sound_dug, os);
 209 }
 210
 211 void ContentFeatures::deSerialize(std::istream &is)
 212 {
 213         int version = readU8(is);
 214         if(version != 3)
 215                 throw SerializationError("unsupported ContentFeatures version");
 216         name = deSerializeString(is);
 217         groups.clear();
 218         u32 groups_size = readU16(is);
 219         for(u32 i=0; i<groups_size; i++){
 220                 std::string name = deSerializeString(is);
 221                 int value = readS16(is);
 222                 groups[name] = value;
 223         }
 224         drawtype = (enum NodeDrawType)readU8(is);
 225         visual_scale = readF1000(is);
 226         if(readU8(is) != 6)
 227                 throw SerializationError("unsupported tile count");
 228         for(u32 i=0; i<6; i++)
 229                 tname_tiles[i] = deSerializeString(is);
 230         if(readU8(is) != CF_SPECIAL_COUNT)
 231                 throw SerializationError("unsupported CF_SPECIAL_COUNT");
 232         for(u32 i=0; i<CF_SPECIAL_COUNT; i++){
 233                 mspec_special[i].deSerialize(is);
 234         }
 235         alpha = readU8(is);
 236         post_effect_color.setAlpha(readU8(is));
 237         post_effect_color.setRed(readU8(is));
 238         post_effect_color.setGreen(readU8(is));
 239         post_effect_color.setBlue(readU8(is));
 240         param_type = (enum ContentParamType)readU8(is);
 241         param_type_2 = (enum ContentParamType2)readU8(is);
 242         is_ground_content = readU8(is);
 243         light_propagates = readU8(is);
 244         sunlight_propagates = readU8(is);
 245         walkable = readU8(is);
 246         pointable = readU8(is);
 247         diggable = readU8(is);
 248         climbable = readU8(is);
 249         buildable_to = readU8(is);
 250         deSerializeString(is); // legacy: used to be metadata_name
 251         liquid_type = (enum LiquidType)readU8(is);
 252         liquid_alternative_flowing = deSerializeString(is);
 253         liquid_alternative_source = deSerializeString(is);
 254         liquid_viscosity = readU8(is);
 255         light_source = readU8(is);
 256         damage_per_second = readU32(is);
 257         selection_box.deSerialize(is);
 258         legacy_facedir_simple = readU8(is);
 259         legacy_wallmounted = readU8(is);
 260         // If you add anything here, insert it primarily inside the try-catch
 261         // block to not need to increase the version.
 262         try{
 263                 deSerializeSimpleSoundSpec(sound_footstep, is);
 264                 deSerializeSimpleSoundSpec(sound_dig, is);
 265                 deSerializeSimpleSoundSpec(sound_dug, is);
 266         }catch(SerializationError &e) {};
 267 }
 268
 269 /*
 270         CNodeDefManager
 271 */
 272
 273 class CNodeDefManager: public IWritableNodeDefManager
 274 {
 275 public:
 276         void clear()
 277         {
 278                 m_name_id_mapping.clear();
 279                 m_name_id_mapping_with_aliases.clear();
 280
 281                 for(u16 i=0; i<=MAX_CONTENT; i++)
 282                 {
 283                         ContentFeatures &f = m_content_features[i];
 284                         f.reset(); // Reset to defaults
 285                 }
 286
 287                 // Set CONTENT_AIR
 288                 {
 289                         ContentFeatures f;
 290                         f.name = "air";
 291                         f.drawtype = NDT_AIRLIKE;
 292                         f.param_type = CPT_LIGHT;
 293                         f.light_propagates = true;
 294                         f.sunlight_propagates = true;
 295                         f.walkable = false;
 296                         f.pointable = false;
 297                         f.diggable = false;
 298                         f.buildable_to = true;
 299                         // Insert directly into containers
 300                         content_t c = CONTENT_AIR;
 301                         m_content_features[c] = f;
 302                         addNameIdMapping(c, f.name);
 303                 }
 304                 // Set CONTENT_IGNORE
 305                 {
 306                         ContentFeatures f;
 307                         f.name = "ignore";
 308                         f.drawtype = NDT_AIRLIKE;
 309                         f.param_type = CPT_NONE;
 310                         f.light_propagates = false;
 311                         f.sunlight_propagates = false;
 312                         f.walkable = false;
 313                         f.pointable = false;
 314                         f.diggable = false;
 315                         // A way to remove accidental CONTENT_IGNOREs
 316                         f.buildable_to = true;
 317                         // Insert directly into containers
 318                         content_t c = CONTENT_IGNORE;
 319                         m_content_features[c] = f;
 320                         addNameIdMapping(c, f.name);
 321                 }
 322         }
 323         // CONTENT_IGNORE = not found
 324         content_t getFreeId(bool require_full_param2)
 325         {
 326                 // If allowed, first search in the large 4-bit-param2 pool
 327                 if(!require_full_param2){
 328                         for(u16 i=0x800; i<=0xfff; i++){
 329                                 const ContentFeatures &f = m_content_features[i];
 330                                 if(f.name == "")
 331                                         return i;
 332                         }
 333                 }
 334                 // Then search from the small 8-bit-param2 pool
 335                 for(u16 i=0; i<=125; i++){
 336                         const ContentFeatures &f = m_content_features[i];
 337                         if(f.name == "")
 338                                 return i;
 339                 }
 340                 return CONTENT_IGNORE;
 341         }
 342         CNodeDefManager()
 343         {
 344                 clear();
 345         }
 346         virtual ~CNodeDefManager()
 347         {
 348         }
 349         virtual IWritableNodeDefManager* clone()
 350         {
 351                 CNodeDefManager *mgr = new CNodeDefManager();
 352                 for(u16 i=0; i<=MAX_CONTENT; i++)
 353                 {
 354                         mgr->set(i, get(i));
 355                 }
 356                 return mgr;
 357         }
 358         virtual const ContentFeatures& get(content_t c) const
 359         {
 360                 assert(c <= MAX_CONTENT);
 361                 return m_content_features[c];
 362         }
 363         virtual const ContentFeatures& get(const MapNode &n) const
 364         {
 365                 return get(n.getContent());
 366         }
 367         virtual bool getId(const std::string &name, content_t &result) const
 368         {
 369                 std::map<std::string, content_t>::const_iterator
 370                         i = m_name_id_mapping_with_aliases.find(name);
 371                 if(i == m_name_id_mapping_with_aliases.end())
 372                         return false;
 373                 result = i->second;
 374                 return true;
 375         }
 376         virtual content_t getId(const std::string &name) const
 377         {
 378                 content_t id = CONTENT_IGNORE;
 379                 getId(name, id);
 380                 return id;
 381         }
 382         virtual void getIds(const std::string &name, std::set<content_t> &result)
 383                         const
 384         {
 385                 if(name.substr(0,6) != "group:"){
 386                         content_t id = CONTENT_IGNORE;
 387                         if(getId(name, id))
 388                                 result.insert(id);
 389                         return;
 390                 }
 391                 std::string group = name.substr(6);
 392                 for(u16 id=0; id<=MAX_CONTENT; id++)
 393                 {
 394                         const ContentFeatures &f = m_content_features[id];
 395                         if(f.name == "") // Quickly discard undefined nodes
 396                                 continue;
 397                         if(itemgroup_get(f.groups, group) != 0)
 398                                 result.insert(id);
 399                 }
 400         }
 401         virtual const ContentFeatures& get(const std::string &name) const
 402         {
 403                 content_t id = CONTENT_IGNORE;
 404                 getId(name, id);
 405                 return get(id);
 406         }
 407         // IWritableNodeDefManager
 408         virtual void set(content_t c, const ContentFeatures &def)
 409         {
 410                 verbosestream<<"registerNode: registering content id \""<<c
 411                                 <<"\": name=\""<<def.name<<"\""<<std::endl;
 412                 assert(c <= MAX_CONTENT);
 413                 // Don't allow redefining CONTENT_IGNORE (but allow air)
 414                 if(def.name == "ignore" || c == CONTENT_IGNORE){
 415                         infostream<<"registerNode: WARNING: Ignoring "
 416                                         <<"CONTENT_IGNORE redefinition"<<std::endl;
 417                         return;
 418                 }
 419                 // Check that the special contents are not redefined as different id
 420                 // because it would mess up everything
 421                 if((def.name == "ignore" && c != CONTENT_IGNORE) ||
 422                         (def.name == "air" && c != CONTENT_AIR)){
 423                         errorstream<<"registerNode: IGNORING ERROR: "
 424                                         <<"trying to register built-in type \""
 425                                         <<def.name<<"\" as different id"<<std::endl;
 426                         return;
 427                 }
 428                 m_content_features[c] = def;
 429                 if(def.name != "")
 430                         addNameIdMapping(c, def.name);
 431         }
 432         virtual content_t set(const std::string &name,
 433                         const ContentFeatures &def)
 434         {
 435                 assert(name == def.name);
 436                 u16 id = CONTENT_IGNORE;
 437                 bool found = m_name_id_mapping.getId(name, id);  // ignore aliases
 438                 if(!found){
 439                         // Determine if full param2 is required
 440                         bool require_full_param2 = (
 441                                 def.param_type_2 == CPT2_FULL
 442                                 ||
 443                                 def.param_type_2 == CPT2_FLOWINGLIQUID
 444                                 ||
 445                                 def.legacy_wallmounted
 446                         );
 447                         // Get some id
 448                         id = getFreeId(require_full_param2);
 449                         if(id == CONTENT_IGNORE)
 450                                 return CONTENT_IGNORE;
 451                         if(name != "")
 452                                 addNameIdMapping(id, name);
 453                 }
 454                 set(id, def);
 455                 return id;
 456         }
 457         virtual content_t allocateDummy(const std::string &name)
 458         {
 459                 assert(name != "");
 460                 ContentFeatures f;
 461                 f.name = name;
 462                 return set(name, f);
 463         }
 464         virtual void updateAliases(IItemDefManager *idef)
 465         {
 466                 std::set<std::string> all = idef->getAll();
 467                 m_name_id_mapping_with_aliases.clear();
 468                 for(std::set<std::string>::iterator
 469                                 i = all.begin(); i != all.end(); i++)
 470                 {
 471                         std::string name = *i;
 472                         std::string convert_to = idef->getAlias(name);
 473                         content_t id;
 474                         if(m_name_id_mapping.getId(convert_to, id))
 475                         {
 476                                 m_name_id_mapping_with_aliases.insert(
 477                                                 std::make_pair(name, id));
 478                         }
 479                 }
 480         }
 481         virtual void updateTextures(ITextureSource *tsrc)
 482         {
 483 #ifndef SERVER
 484                 infostream<<"CNodeDefManager::updateTextures(): Updating "
 485                                 <<"textures in node definitions"<<std::endl;
 486
 487                 bool new_style_water = g_settings->getBool("new_style_water");
 488                 bool new_style_leaves = g_settings->getBool("new_style_leaves");
 489                 bool opaque_water = g_settings->getBool("opaque_water");
 490
 491                 for(u16 i=0; i<=MAX_CONTENT; i++)
 492                 {
 493                         ContentFeatures *f = &m_content_features[i];
 494
 495                         std::string tname_tiles[6];
 496                         for(u32 j=0; j<6; j++)
 497                         {
 498                                 tname_tiles[j] = f->tname_tiles[j];
 499                                 if(tname_tiles[j] == "")
 500                                         tname_tiles[j] = "unknown_block.png";
 501                         }
 502
 503                         switch(f->drawtype){
 504                         default:
 505                         case NDT_NORMAL:
 506                                 f->solidness = 2;
 507                                 break;
 508                         case NDT_AIRLIKE:
 509                                 f->solidness = 0;
 510                                 break;
 511                         case NDT_LIQUID:
 512                                 assert(f->liquid_type == LIQUID_SOURCE);
 513                                 if(opaque_water)
 514                                         f->alpha = 255;
 515                                 if(new_style_water){
 516                                         f->solidness = 0;
 517                                 } else {
 518                                         f->solidness = 1;
 519                                         if(f->alpha == 255)
 520                                                 f->solidness = 2;
 521                                         f->backface_culling = false;
 522                                 }
 523                                 break;
 524                         case NDT_FLOWINGLIQUID:
 525                                 assert(f->liquid_type == LIQUID_FLOWING);
 526                                 f->solidness = 0;
 527                                 if(opaque_water)
 528                                         f->alpha = 255;
 529                                 break;
 530                         case NDT_GLASSLIKE:
 531                                 f->solidness = 0;
 532                                 f->visual_solidness = 1;
 533                                 break;
 534                         case NDT_ALLFACES:
 535                                 f->solidness = 0;
 536                                 f->visual_solidness = 1;
 537                                 break;
 538                         case NDT_ALLFACES_OPTIONAL:
 539                                 if(new_style_leaves){
 540                                         f->drawtype = NDT_ALLFACES;
 541                                         f->solidness = 0;
 542                                         f->visual_solidness = 1;
 543                                 } else {
 544                                         f->drawtype = NDT_NORMAL;
 545                                         f->solidness = 2;
 546                                         for(u32 i=0; i<6; i++){
 547                                                 tname_tiles[i] += std::string("^[noalpha");
 548                                         }
 549                                 }
 550                                 break;
 551                         case NDT_TORCHLIKE:
 552                         case NDT_SIGNLIKE:
 553                         case NDT_PLANTLIKE:
 554                         case NDT_FENCELIKE:
 555                         case NDT_RAILLIKE:
 556                                 f->solidness = 0;
 557                                 break;
 558                         }
 559
 560                         // Tile textures
 561                         for(u16 j=0; j<6; j++){
 562                                 f->tiles[j].texture = tsrc->getTexture(tname_tiles[j]);
 563                                 f->tiles[j].alpha = f->alpha;
 564                                 if(f->alpha == 255)
 565                                         f->tiles[j].material_type = MATERIAL_ALPHA_SIMPLE;
 566                                 else
 567                                         f->tiles[j].material_type = MATERIAL_ALPHA_VERTEX;
 568                                 f->tiles[j].material_flags = 0;
 569                                 if(f->backface_culling)
 570                                         f->tiles[j].material_flags |= MATERIAL_FLAG_BACKFACE_CULLING;
 571                         }
 572                         // Special tiles
 573                         for(u16 j=0; j<CF_SPECIAL_COUNT; j++){
 574                                 f->special_tiles[j].texture = tsrc->getTexture(f->mspec_special[j].tname);
 575                                 f->special_tiles[j].alpha = f->alpha;
 576                                 if(f->alpha == 255)
 577                                         f->special_tiles[j].material_type = MATERIAL_ALPHA_SIMPLE;
 578                                 else
 579                                         f->special_tiles[j].material_type = MATERIAL_ALPHA_VERTEX;
 580                                 f->special_tiles[j].material_flags = 0;
 581                                 if(f->mspec_special[j].backface_culling)
 582                                         f->special_tiles[j].material_flags |= MATERIAL_FLAG_BACKFACE_CULLING;
 583                         }
 584                 }
 585 #endif
 586         }
 587         void serialize(std::ostream &os)
 588         {
 589                 writeU8(os, 1); // version
 590                 u16 count = 0;
 591                 std::ostringstream os2(std::ios::binary);
 592                 for(u16 i=0; i<=MAX_CONTENT; i++)
 593                 {
 594                         if(i == CONTENT_IGNORE || i == CONTENT_AIR)
 595                                 continue;
 596                         ContentFeatures *f = &m_content_features[i];
 597                         if(f->name == "")
 598                                 continue;
 599                         writeU16(os2, i);
 600                         // Wrap it in a string to allow different lengths without
 601                         // strict version incompatibilities
 602                         std::ostringstream wrapper_os(std::ios::binary);
 603                         f->serialize(wrapper_os);
 604                         os2<<serializeString(wrapper_os.str());
 605                         count++;
 606                 }
 607                 writeU16(os, count);
 608                 os<<serializeLongString(os2.str());
 609         }
 610         void deSerialize(std::istream &is)
 611         {
 612                 clear();
 613                 int version = readU8(is);
 614                 if(version != 1)
 615                         throw SerializationError("unsupported NodeDefinitionManager version");
 616                 u16 count = readU16(is);
 617                 std::istringstream is2(deSerializeLongString(is), std::ios::binary);
 618                 for(u16 n=0; n<count; n++){
 619                         u16 i = readU16(is2);
 620                         if(i > MAX_CONTENT){
 621                                 errorstream<<"ContentFeatures::deSerialize(): "
 622                                                 <<"Too large content id: "<<i<<std::endl;
 623                                 continue;
 624                         }
 625                         /*// Do not deserialize special types
 626                         if(i == CONTENT_IGNORE || i == CONTENT_AIR)
 627                                 continue;*/
 628                         ContentFeatures *f = &m_content_features[i];
 629                         // Read it from the string wrapper
 630                         std::string wrapper = deSerializeString(is2);
 631                         std::istringstream wrapper_is(wrapper, std::ios::binary);
 632                         f->deSerialize(wrapper_is);
 633                         if(f->name != "")
 634                                 addNameIdMapping(i, f->name);
 635                 }
 636         }
 637 private:
 638         void addNameIdMapping(content_t i, std::string name)
 639         {
 640                 m_name_id_mapping.set(i, name);
 641                 m_name_id_mapping_with_aliases.insert(std::make_pair(name, i));
 642         }
 643 private:
 644         // Features indexed by id
 645         ContentFeatures m_content_features[MAX_CONTENT+1];
 646         // A mapping for fast converting back and forth between names and ids
 647         NameIdMapping m_name_id_mapping;
 648         // Like m_name_id_mapping, but only from names to ids, and includes
 649         // item aliases too. Updated by updateAliases()
 650         // Note: Not serialized.
 651         std::map<std::string, content_t> m_name_id_mapping_with_aliases;
 652 };
 653
 654 IWritableNodeDefManager* createNodeDefManager()
 655 {
 656         return new CNodeDefManager();
 657 }
 658