src/nodedef.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 "nodedef.h"
  21
  22 #include "main.h" // For g_settings
  23 #include "itemdef.h"
  24 #ifndef SERVER
  25 #include "tile.h"
  26 #include "mesh.h"
  27 #include <IMeshManipulator.h>
  28 #endif
  29 #include "log.h"
  30 #include "settings.h"
  31 #include "nameidmapping.h"
  32 #include "util/numeric.h"
  33 #include "util/serialize.h"
  34 #include "exceptions.h"
  35 #include "debug.h"
  36 #include "gamedef.h"
  37
  38 /*
  39         NodeBox
  40 */
  41
  42 void NodeBox::reset()
  43 {
  44         type = NODEBOX_REGULAR;
  45         // default is empty
  46         fixed.clear();
  47         // default is sign/ladder-like
  48         wall_top = aabb3f(-BS/2, BS/2-BS/16., -BS/2, BS/2, BS/2, BS/2);
  49         wall_bottom = aabb3f(-BS/2, -BS/2, -BS/2, BS/2, -BS/2+BS/16., BS/2);
  50         wall_side = aabb3f(-BS/2, -BS/2, -BS/2, -BS/2+BS/16., BS/2, BS/2);
  51 }
  52
  53 void NodeBox::serialize(std::ostream &os, u16 protocol_version) const
  54 {
  55         int version = protocol_version >= 21 ? 2 : 1;
  56         writeU8(os, version);
  57
  58         if (version == 1 && type == NODEBOX_LEVELED)
  59                 writeU8(os, NODEBOX_FIXED);
  60         else
  61                 writeU8(os, type);
  62
  63         if(type == NODEBOX_FIXED || type == NODEBOX_LEVELED)
  64         {
  65                 writeU16(os, fixed.size());
  66                 for(std::vector<aabb3f>::const_iterator
  67                                 i = fixed.begin();
  68                                 i != fixed.end(); i++)
  69                 {
  70                         writeV3F1000(os, i->MinEdge);
  71                         writeV3F1000(os, i->MaxEdge);
  72                 }
  73         }
  74         else if(type == NODEBOX_WALLMOUNTED)
  75         {
  76                 writeV3F1000(os, wall_top.MinEdge);
  77                 writeV3F1000(os, wall_top.MaxEdge);
  78                 writeV3F1000(os, wall_bottom.MinEdge);
  79                 writeV3F1000(os, wall_bottom.MaxEdge);
  80                 writeV3F1000(os, wall_side.MinEdge);
  81                 writeV3F1000(os, wall_side.MaxEdge);
  82         }
  83 }
  84
  85 void NodeBox::deSerialize(std::istream &is)
  86 {
  87         int version = readU8(is);
  88         if(version < 1 || version > 2)
  89                 throw SerializationError("unsupported NodeBox version");
  90
  91         reset();
  92
  93         type = (enum NodeBoxType)readU8(is);
  94
  95         if(type == NODEBOX_FIXED || type == NODEBOX_LEVELED)
  96         {
  97                 u16 fixed_count = readU16(is);
  98                 while(fixed_count--)
  99                 {
 100                         aabb3f box;
 101                         box.MinEdge = readV3F1000(is);
 102                         box.MaxEdge = readV3F1000(is);
 103                         fixed.push_back(box);
 104                 }
 105         }
 106         else if(type == NODEBOX_WALLMOUNTED)
 107         {
 108                 wall_top.MinEdge = readV3F1000(is);
 109                 wall_top.MaxEdge = readV3F1000(is);
 110                 wall_bottom.MinEdge = readV3F1000(is);
 111                 wall_bottom.MaxEdge = readV3F1000(is);
 112                 wall_side.MinEdge = readV3F1000(is);
 113                 wall_side.MaxEdge = readV3F1000(is);
 114         }
 115 }
 116
 117 /*
 118         TileDef
 119 */
 120
 121 void TileDef::serialize(std::ostream &os, u16 protocol_version) const
 122 {
 123         if(protocol_version >= 17)
 124                 writeU8(os, 1);
 125         else
 126                 writeU8(os, 0);
 127         os<<serializeString(name);
 128         writeU8(os, animation.type);
 129         writeU16(os, animation.aspect_w);
 130         writeU16(os, animation.aspect_h);
 131         writeF1000(os, animation.length);
 132         if(protocol_version >= 17)
 133                 writeU8(os, backface_culling);
 134 }
 135
 136 void TileDef::deSerialize(std::istream &is)
 137 {
 138         int version = readU8(is);
 139         name = deSerializeString(is);
 140         animation.type = (TileAnimationType)readU8(is);
 141         animation.aspect_w = readU16(is);
 142         animation.aspect_h = readU16(is);
 143         animation.length = readF1000(is);
 144         if(version >= 1)
 145                 backface_culling = readU8(is);
 146 }
 147
 148 /*
 149         SimpleSoundSpec serialization
 150 */
 151
 152 static void serializeSimpleSoundSpec(const SimpleSoundSpec &ss,
 153                 std::ostream &os)
 154 {
 155         os<<serializeString(ss.name);
 156         writeF1000(os, ss.gain);
 157 }
 158 static void deSerializeSimpleSoundSpec(SimpleSoundSpec &ss, std::istream &is)
 159 {
 160         ss.name = deSerializeString(is);
 161         ss.gain = readF1000(is);
 162 }
 163
 164 /*
 165         ContentFeatures
 166 */
 167
 168 ContentFeatures::ContentFeatures()
 169 {
 170         reset();
 171 }
 172
 173 ContentFeatures::~ContentFeatures()
 174 {
 175 }
 176
 177 void ContentFeatures::reset()
 178 {
 179         /*
 180                 Cached stuff
 181         */
 182 #ifndef SERVER
 183         solidness = 2;
 184         visual_solidness = 0;
 185         backface_culling = true;
 186 #endif
 187         has_on_construct = false;
 188         has_on_destruct = false;
 189         has_after_destruct = false;
 190         /*
 191                 Actual data
 192
 193                 NOTE: Most of this is always overridden by the default values given
 194                       in builtin.lua
 195         */
 196         name = "";
 197         groups.clear();
 198         // Unknown nodes can be dug
 199         groups["dig_immediate"] = 2;
 200         drawtype = NDT_NORMAL;
 201         mesh = "";
 202 #ifndef SERVER
 203         for(u32 i = 0; i < 24; i++)
 204                 mesh_ptr[i] = NULL;
 205 #endif
 206         visual_scale = 1.0;
 207         for(u32 i = 0; i < 6; i++)
 208                 tiledef[i] = TileDef();
 209         for(u16 j = 0; j < CF_SPECIAL_COUNT; j++)
 210                 tiledef_special[j] = TileDef();
 211         alpha = 255;
 212         post_effect_color = video::SColor(0, 0, 0, 0);
 213         param_type = CPT_NONE;
 214         param_type_2 = CPT2_NONE;
 215         is_ground_content = false;
 216         light_propagates = false;
 217         sunlight_propagates = false;
 218         walkable = true;
 219         pointable = true;
 220         diggable = true;
 221         climbable = false;
 222         buildable_to = false;
 223         rightclickable = true;
 224         leveled = 0;
 225         liquid_type = LIQUID_NONE;
 226         liquid_alternative_flowing = "";
 227         liquid_alternative_source = "";
 228         liquid_viscosity = 0;
 229         liquid_renewable = true;
 230         freezemelt = "";
 231         liquid_range = LIQUID_LEVEL_MAX+1;
 232         drowning = 0;
 233         light_source = 0;
 234         damage_per_second = 0;
 235         node_box = NodeBox();
 236         selection_box = NodeBox();
 237         collision_box = NodeBox();
 238         waving = 0;
 239         legacy_facedir_simple = false;
 240         legacy_wallmounted = false;
 241         sound_footstep = SimpleSoundSpec();
 242         sound_dig = SimpleSoundSpec("__group");
 243         sound_dug = SimpleSoundSpec();
 244 }
 245
 246 void ContentFeatures::serialize(std::ostream &os, u16 protocol_version)
 247 {
 248         if(protocol_version < 24){
 249                 serializeOld(os, protocol_version);
 250                 return;
 251         }
 252
 253         writeU8(os, 7); // version
 254         os<<serializeString(name);
 255         writeU16(os, groups.size());
 256         for(ItemGroupList::const_iterator
 257                         i = groups.begin(); i != groups.end(); i++){
 258                 os<<serializeString(i->first);
 259                 writeS16(os, i->second);
 260         }
 261         writeU8(os, drawtype);
 262         writeF1000(os, visual_scale);
 263         writeU8(os, 6);
 264         for(u32 i = 0; i < 6; i++)
 265                 tiledef[i].serialize(os, protocol_version);
 266         writeU8(os, CF_SPECIAL_COUNT);
 267         for(u32 i = 0; i < CF_SPECIAL_COUNT; i++){
 268                 tiledef_special[i].serialize(os, protocol_version);
 269         }
 270         writeU8(os, alpha);
 271         writeU8(os, post_effect_color.getAlpha());
 272         writeU8(os, post_effect_color.getRed());
 273         writeU8(os, post_effect_color.getGreen());
 274         writeU8(os, post_effect_color.getBlue());
 275         writeU8(os, param_type);
 276         writeU8(os, param_type_2);
 277         writeU8(os, is_ground_content);
 278         writeU8(os, light_propagates);
 279         writeU8(os, sunlight_propagates);
 280         writeU8(os, walkable);
 281         writeU8(os, pointable);
 282         writeU8(os, diggable);
 283         writeU8(os, climbable);
 284         writeU8(os, buildable_to);
 285         os<<serializeString(""); // legacy: used to be metadata_name
 286         writeU8(os, liquid_type);
 287         os<<serializeString(liquid_alternative_flowing);
 288         os<<serializeString(liquid_alternative_source);
 289         writeU8(os, liquid_viscosity);
 290         writeU8(os, liquid_renewable);
 291         writeU8(os, light_source);
 292         writeU32(os, damage_per_second);
 293         node_box.serialize(os, protocol_version);
 294         selection_box.serialize(os, protocol_version);
 295         writeU8(os, legacy_facedir_simple);
 296         writeU8(os, legacy_wallmounted);
 297         serializeSimpleSoundSpec(sound_footstep, os);
 298         serializeSimpleSoundSpec(sound_dig, os);
 299         serializeSimpleSoundSpec(sound_dug, os);
 300         writeU8(os, rightclickable);
 301         writeU8(os, drowning);
 302         writeU8(os, leveled);
 303         writeU8(os, liquid_range);
 304         writeU8(os, waving);
 305         // Stuff below should be moved to correct place in a version that otherwise changes
 306         // the protocol version
 307         os<<serializeString(mesh);
 308         collision_box.serialize(os, protocol_version);
 309 }
 310
 311 void ContentFeatures::deSerialize(std::istream &is)
 312 {
 313         int version = readU8(is);
 314         if(version != 7){
 315                 deSerializeOld(is, version);
 316                 return;
 317         }
 318
 319         name = deSerializeString(is);
 320         groups.clear();
 321         u32 groups_size = readU16(is);
 322         for(u32 i = 0; i < groups_size; i++){
 323                 std::string name = deSerializeString(is);
 324                 int value = readS16(is);
 325                 groups[name] = value;
 326         }
 327         drawtype = (enum NodeDrawType)readU8(is);
 328         visual_scale = readF1000(is);
 329         if(readU8(is) != 6)
 330                 throw SerializationError("unsupported tile count");
 331         for(u32 i = 0; i < 6; i++)
 332                 tiledef[i].deSerialize(is);
 333         if(readU8(is) != CF_SPECIAL_COUNT)
 334                 throw SerializationError("unsupported CF_SPECIAL_COUNT");
 335         for(u32 i = 0; i < CF_SPECIAL_COUNT; i++)
 336                 tiledef_special[i].deSerialize(is);
 337         alpha = readU8(is);
 338         post_effect_color.setAlpha(readU8(is));
 339         post_effect_color.setRed(readU8(is));
 340         post_effect_color.setGreen(readU8(is));
 341         post_effect_color.setBlue(readU8(is));
 342         param_type = (enum ContentParamType)readU8(is);
 343         param_type_2 = (enum ContentParamType2)readU8(is);
 344         is_ground_content = readU8(is);
 345         light_propagates = readU8(is);
 346         sunlight_propagates = readU8(is);
 347         walkable = readU8(is);
 348         pointable = readU8(is);
 349         diggable = readU8(is);
 350         climbable = readU8(is);
 351         buildable_to = readU8(is);
 352         deSerializeString(is); // legacy: used to be metadata_name
 353         liquid_type = (enum LiquidType)readU8(is);
 354         liquid_alternative_flowing = deSerializeString(is);
 355         liquid_alternative_source = deSerializeString(is);
 356         liquid_viscosity = readU8(is);
 357         liquid_renewable = readU8(is);
 358         light_source = readU8(is);
 359         damage_per_second = readU32(is);
 360         node_box.deSerialize(is);
 361         selection_box.deSerialize(is);
 362         legacy_facedir_simple = readU8(is);
 363         legacy_wallmounted = readU8(is);
 364         deSerializeSimpleSoundSpec(sound_footstep, is);
 365         deSerializeSimpleSoundSpec(sound_dig, is);
 366         deSerializeSimpleSoundSpec(sound_dug, is);
 367         rightclickable = readU8(is);
 368         drowning = readU8(is);
 369         leveled = readU8(is);
 370         liquid_range = readU8(is);
 371         waving = readU8(is);
 372         // If you add anything here, insert it primarily inside the try-catch
 373         // block to not need to increase the version.
 374         try{
 375                 // Stuff below should be moved to correct place in a version that
 376                 // otherwise changes the protocol version
 377         mesh = deSerializeString(is);
 378         collision_box.deSerialize(is);
 379         }catch(SerializationError &e) {};
 380 }
 381
 382 /*
 383         CNodeDefManager
 384 */
 385
 386 class CNodeDefManager: public IWritableNodeDefManager {
 387 public:
 388         CNodeDefManager();
 389         virtual ~CNodeDefManager();
 390         void clear();
 391         virtual IWritableNodeDefManager *clone();
 392         inline virtual const ContentFeatures& get(content_t c) const;
 393         inline virtual const ContentFeatures& get(const MapNode &n) const;
 394         virtual bool getId(const std::string &name, content_t &result) const;
 395         virtual content_t getId(const std::string &name) const;
 396         virtual void getIds(const std::string &name, std::set<content_t> &result) const;
 397         virtual const ContentFeatures& get(const std::string &name) const;
 398         content_t allocateId();
 399         virtual content_t set(const std::string &name, const ContentFeatures &def);
 400         virtual content_t allocateDummy(const std::string &name);
 401         virtual void updateAliases(IItemDefManager *idef);
 402         virtual void updateTextures(IGameDef *gamedef);
 403         void serialize(std::ostream &os, u16 protocol_version);
 404         void deSerialize(std::istream &is);
 405
 406         virtual void pendNodeResolve(NodeResolveInfo *nri);
 407         virtual void cancelNodeResolve(NodeResolver *resolver);
 408         virtual void runNodeResolverCallbacks();
 409
 410         virtual bool getIdFromResolveInfo(NodeResolveInfo *nri,
 411                 const std::string &node_alt, content_t c_fallback, content_t &result);
 412         virtual bool getIdsFromResolveInfo(NodeResolveInfo *nri,
 413                 std::vector<content_t> &result);
 414
 415 private:
 416         void addNameIdMapping(content_t i, std::string name);
 417 #ifndef SERVER
 418         void fillTileAttribs(ITextureSource *tsrc, TileSpec *tile, TileDef *tiledef,
 419                 u32 shader_id, bool use_normal_texture, bool backface_culling,
 420                 u8 alpha, u8 material_type);
 421 #endif
 422
 423         // Features indexed by id
 424         std::vector<ContentFeatures> m_content_features;
 425
 426         // A mapping for fast converting back and forth between names and ids
 427         NameIdMapping m_name_id_mapping;
 428
 429         // Like m_name_id_mapping, but only from names to ids, and includes
 430         // item aliases too. Updated by updateAliases()
 431         // Note: Not serialized.
 432
 433         std::map<std::string, content_t> m_name_id_mapping_with_aliases;
 434
 435         // A mapping from groups to a list of content_ts (and their levels)
 436         // that belong to it.  Necessary for a direct lookup in getIds().
 437         // Note: Not serialized.
 438         std::map<std::string, GroupItems> m_group_to_items;
 439
 440         // Next possibly free id
 441         content_t m_next_id;
 442
 443         // List of node strings and node resolver callbacks to perform
 444         std::list<NodeResolveInfo *> m_pending_node_lookups;
 445 };
 446
 447
 448 CNodeDefManager::CNodeDefManager()
 449 {
 450         clear();
 451 }
 452
 453
 454 CNodeDefManager::~CNodeDefManager()
 455 {
 456 #ifndef SERVER
 457         for (u32 i = 0; i < m_content_features.size(); i++) {
 458                 ContentFeatures *f = &m_content_features[i];
 459                 for (u32 j = 0; j < 24; j++) {
 460                         if (f->mesh_ptr[j])
 461                                 f->mesh_ptr[j]->drop();
 462                 }
 463         }
 464 #endif
 465 }
 466
 467
 468 void CNodeDefManager::clear()
 469 {
 470         m_content_features.clear();
 471         m_name_id_mapping.clear();
 472         m_name_id_mapping_with_aliases.clear();
 473         m_group_to_items.clear();
 474         m_next_id = 0;
 475
 476         u32 initial_length = 0;
 477         initial_length = MYMAX(initial_length, CONTENT_UNKNOWN + 1);
 478         initial_length = MYMAX(initial_length, CONTENT_AIR + 1);
 479         initial_length = MYMAX(initial_length, CONTENT_IGNORE + 1);
 480         m_content_features.resize(initial_length);
 481
 482         // Set CONTENT_UNKNOWN
 483         {
 484                 ContentFeatures f;
 485                 f.name = "unknown";
 486                 // Insert directly into containers
 487                 content_t c = CONTENT_UNKNOWN;
 488                 m_content_features[c] = f;
 489                 addNameIdMapping(c, f.name);
 490         }
 491
 492         // Set CONTENT_AIR
 493         {
 494                 ContentFeatures f;
 495                 f.name                = "air";
 496                 f.drawtype            = NDT_AIRLIKE;
 497                 f.param_type          = CPT_LIGHT;
 498                 f.light_propagates    = true;
 499                 f.sunlight_propagates = true;
 500                 f.walkable            = false;
 501                 f.pointable           = false;
 502                 f.diggable            = false;
 503                 f.buildable_to        = true;
 504                 f.is_ground_content   = true;
 505                 // Insert directly into containers
 506                 content_t c = CONTENT_AIR;
 507                 m_content_features[c] = f;
 508                 addNameIdMapping(c, f.name);
 509         }
 510
 511         // Set CONTENT_IGNORE
 512         {
 513                 ContentFeatures f;
 514                 f.name                = "ignore";
 515                 f.drawtype            = NDT_AIRLIKE;
 516                 f.param_type          = CPT_NONE;
 517                 f.light_propagates    = false;
 518                 f.sunlight_propagates = false;
 519                 f.walkable            = false;
 520                 f.pointable           = false;
 521                 f.diggable            = false;
 522                 f.buildable_to        = true; // A way to remove accidental CONTENT_IGNOREs
 523                 f.is_ground_content   = true;
 524                 // Insert directly into containers
 525                 content_t c = CONTENT_IGNORE;
 526                 m_content_features[c] = f;
 527                 addNameIdMapping(c, f.name);
 528         }
 529 }
 530
 531
 532 IWritableNodeDefManager *CNodeDefManager::clone()
 533 {
 534         CNodeDefManager *mgr = new CNodeDefManager();
 535         *mgr = *this;
 536         return mgr;
 537 }
 538
 539
 540 inline const ContentFeatures& CNodeDefManager::get(content_t c) const
 541 {
 542         return c < m_content_features.size()
 543                         ? m_content_features[c] : m_content_features[CONTENT_UNKNOWN];
 544 }
 545
 546
 547 inline const ContentFeatures& CNodeDefManager::get(const MapNode &n) const
 548 {
 549         return get(n.getContent());
 550 }
 551
 552
 553 bool CNodeDefManager::getId(const std::string &name, content_t &result) const
 554 {
 555         std::map<std::string, content_t>::const_iterator
 556                 i = m_name_id_mapping_with_aliases.find(name);
 557         if(i == m_name_id_mapping_with_aliases.end())
 558                 return false;
 559         result = i->second;
 560         return true;
 561 }
 562
 563
 564 content_t CNodeDefManager::getId(const std::string &name) const
 565 {
 566         content_t id = CONTENT_IGNORE;
 567         getId(name, id);
 568         return id;
 569 }
 570
 571
 572 void CNodeDefManager::getIds(const std::string &name,
 573                 std::set<content_t> &result) const
 574 {
 575         //TimeTaker t("getIds", NULL, PRECISION_MICRO);
 576         if (name.substr(0,6) != "group:") {
 577                 content_t id = CONTENT_IGNORE;
 578                 if(getId(name, id))
 579                         result.insert(id);
 580                 return;
 581         }
 582         std::string group = name.substr(6);
 583
 584         std::map<std::string, GroupItems>::const_iterator
 585                 i = m_group_to_items.find(group);
 586         if (i == m_group_to_items.end())
 587                 return;
 588
 589         const GroupItems &items = i->second;
 590         for (GroupItems::const_iterator j = items.begin();
 591                 j != items.end(); ++j) {
 592                 if ((*j).second != 0)
 593                         result.insert((*j).first);
 594         }
 595         //printf("getIds: %dus\n", t.stop());
 596 }
 597
 598
 599 const ContentFeatures& CNodeDefManager::get(const std::string &name) const
 600 {
 601         content_t id = CONTENT_UNKNOWN;
 602         getId(name, id);
 603         return get(id);
 604 }
 605
 606
 607 // returns CONTENT_IGNORE if no free ID found
 608 content_t CNodeDefManager::allocateId()
 609 {
 610         for (content_t id = m_next_id;
 611                         id >= m_next_id; // overflow?
 612                         ++id) {
 613                 while (id >= m_content_features.size()) {
 614                         m_content_features.push_back(ContentFeatures());
 615                 }
 616                 const ContentFeatures &f = m_content_features[id];
 617                 if (f.name == "") {
 618                         m_next_id = id + 1;
 619                         return id;
 620                 }
 621         }
 622         // If we arrive here, an overflow occurred in id.
 623         // That means no ID was found
 624         return CONTENT_IGNORE;
 625 }
 626
 627
 628 // IWritableNodeDefManager
 629 content_t CNodeDefManager::set(const std::string &name, const ContentFeatures &def)
 630 {
 631         assert(name != "");
 632         assert(name == def.name);
 633
 634         // Don't allow redefining ignore (but allow air and unknown)
 635         if (name == "ignore") {
 636                 infostream << "NodeDefManager: WARNING: Ignoring "
 637                         "CONTENT_IGNORE redefinition"<<std::endl;
 638                 return CONTENT_IGNORE;
 639         }
 640
 641         content_t id = CONTENT_IGNORE;
 642         if (!m_name_id_mapping.getId(name, id)) { // ignore aliases
 643                 // Get new id
 644                 id = allocateId();
 645                 if (id == CONTENT_IGNORE) {
 646                         infostream << "NodeDefManager: WARNING: Absolute "
 647                                 "limit reached" << std::endl;
 648                         return CONTENT_IGNORE;
 649                 }
 650                 assert(id != CONTENT_IGNORE);
 651                 addNameIdMapping(id, name);
 652         }
 653         m_content_features[id] = def;
 654         verbosestream << "NodeDefManager: registering content id \"" << id
 655                 << "\": name=\"" << def.name << "\""<<std::endl;
 656
 657         // Add this content to the list of all groups it belongs to
 658         // FIXME: This should remove a node from groups it no longer
 659         // belongs to when a node is re-registered
 660         for (ItemGroupList::const_iterator i = def.groups.begin();
 661                 i != def.groups.end(); ++i) {
 662                 std::string group_name = i->first;
 663
 664                 std::map<std::string, GroupItems>::iterator
 665                         j = m_group_to_items.find(group_name);
 666                 if (j == m_group_to_items.end()) {
 667                         m_group_to_items[group_name].push_back(
 668                                         std::make_pair(id, i->second));
 669                 } else {
 670                         GroupItems &items = j->second;
 671                         items.push_back(std::make_pair(id, i->second));
 672                 }
 673         }
 674         return id;
 675 }
 676
 677
 678 content_t CNodeDefManager::allocateDummy(const std::string &name)
 679 {
 680         assert(name != "");
 681         ContentFeatures f;
 682         f.name = name;
 683         return set(name, f);
 684 }
 685
 686
 687 void CNodeDefManager::updateAliases(IItemDefManager *idef)
 688 {
 689         std::set<std::string> all = idef->getAll();
 690         m_name_id_mapping_with_aliases.clear();
 691         for (std::set<std::string>::iterator
 692                         i = all.begin(); i != all.end(); i++) {
 693                 std::string name = *i;
 694                 std::string convert_to = idef->getAlias(name);
 695                 content_t id;
 696                 if (m_name_id_mapping.getId(convert_to, id)) {
 697                         m_name_id_mapping_with_aliases.insert(
 698                                         std::make_pair(name, id));
 699                 }
 700         }
 701 }
 702
 703
 704 void CNodeDefManager::updateTextures(IGameDef *gamedef)
 705 {
 706 #ifndef SERVER
 707         infostream << "CNodeDefManager::updateTextures(): Updating "
 708                 "textures in node definitions" << std::endl;
 709
 710         ITextureSource *tsrc = gamedef->tsrc();
 711         IShaderSource *shdsrc = gamedef->getShaderSource();
 712         scene::ISceneManager* smgr = gamedef->getSceneManager();
 713         scene::IMeshManipulator* meshmanip = smgr->getMeshManipulator();
 714
 715         bool new_style_water           = g_settings->getBool("new_style_water");
 716         bool new_style_leaves          = g_settings->getBool("new_style_leaves");
 717         bool connected_glass           = g_settings->getBool("connected_glass");
 718         bool opaque_water              = g_settings->getBool("opaque_water");
 719         bool enable_shaders            = g_settings->getBool("enable_shaders");
 720         bool enable_bumpmapping        = g_settings->getBool("enable_bumpmapping");
 721         bool enable_parallax_occlusion = g_settings->getBool("enable_parallax_occlusion");
 722         bool enable_mesh_cache         = g_settings->getBool("enable_mesh_cache");
 723
 724         bool use_normal_texture = enable_shaders &&
 725                 (enable_bumpmapping || enable_parallax_occlusion);
 726
 727         for (u32 i = 0; i < m_content_features.size(); i++) {
 728                 ContentFeatures *f = &m_content_features[i];
 729
 730                 // Figure out the actual tiles to use
 731                 TileDef tiledef[6];
 732                 for (u32 j = 0; j < 6; j++) {
 733                         tiledef[j] = f->tiledef[j];
 734                         if (tiledef[j].name == "")
 735                                 tiledef[j].name = "unknown_node.png";
 736                 }
 737
 738                 bool is_liquid = false;
 739                 bool is_water_surface = false;
 740
 741                 u8 material_type = (f->alpha == 255) ?
 742                         TILE_MATERIAL_BASIC : TILE_MATERIAL_ALPHA;
 743
 744                 switch (f->drawtype) {
 745                 default:
 746                 case NDT_NORMAL:
 747                         f->solidness = 2;
 748                         break;
 749                 case NDT_AIRLIKE:
 750                         f->solidness = 0;
 751                         break;
 752                 case NDT_LIQUID:
 753                         assert(f->liquid_type == LIQUID_SOURCE);
 754                         if (opaque_water)
 755                                 f->alpha = 255;
 756                         if (new_style_water){
 757                                 f->solidness = 0;
 758                         } else {
 759                                 f->solidness = 1;
 760                                 f->backface_culling = false;
 761                         }
 762                         is_liquid = true;
 763                         break;
 764                 case NDT_FLOWINGLIQUID:
 765                         assert(f->liquid_type == LIQUID_FLOWING);
 766                         f->solidness = 0;
 767                         if (opaque_water)
 768                                 f->alpha = 255;
 769                         is_liquid = true;
 770                         break;
 771                 case NDT_GLASSLIKE:
 772                         f->solidness = 0;
 773                         f->visual_solidness = 1;
 774                         break;
 775                 case NDT_GLASSLIKE_FRAMED:
 776                         f->solidness = 0;
 777                         f->visual_solidness = 1;
 778                         break;
 779                 case NDT_GLASSLIKE_FRAMED_OPTIONAL:
 780                         f->solidness = 0;
 781                         f->visual_solidness = 1;
 782                         f->drawtype = connected_glass ? NDT_GLASSLIKE_FRAMED : NDT_GLASSLIKE;
 783                         break;
 784                 case NDT_ALLFACES:
 785                         f->solidness = 0;
 786                         f->visual_solidness = 1;
 787                         break;
 788                 case NDT_ALLFACES_OPTIONAL:
 789                         if (new_style_leaves) {
 790                                 f->drawtype = NDT_ALLFACES;
 791                                 f->solidness = 0;
 792                                 f->visual_solidness = 1;
 793                         } else {
 794                                 f->drawtype = NDT_NORMAL;
 795                                 f->solidness = 2;
 796                                 for (u32 i = 0; i < 6; i++)
 797                                         tiledef[i].name += std::string("^[noalpha");
 798                         }
 799                         if (f->waving == 1)
 800                                 material_type = TILE_MATERIAL_WAVING_LEAVES;
 801                         break;
 802                 case NDT_PLANTLIKE:
 803                         f->solidness = 0;
 804                         f->backface_culling = false;
 805                         if (f->waving == 1)
 806                                 material_type = TILE_MATERIAL_WAVING_PLANTS;
 807                         break;
 808                 case NDT_FIRELIKE:
 809                         f->backface_culling = false;
 810                         f->solidness = 0;
 811                         break;
 812                 case NDT_MESH:
 813                         f->solidness = 0;
 814                         f->backface_culling = false;
 815                         break;
 816                 case NDT_TORCHLIKE:
 817                 case NDT_SIGNLIKE:
 818                 case NDT_FENCELIKE:
 819                 case NDT_RAILLIKE:
 820                 case NDT_NODEBOX:
 821                         f->solidness = 0;
 822                         break;
 823                 }
 824
 825                 if (is_liquid) {
 826                         material_type = (f->alpha == 255) ?
 827                                 TILE_MATERIAL_LIQUID_OPAQUE : TILE_MATERIAL_LIQUID_TRANSPARENT;
 828                         if (f->name == "default:water_source")
 829                                 is_water_surface = true;
 830                 }
 831
 832                 u32 tile_shader[6];
 833                 for (u16 j = 0; j < 6; j++) {
 834                         tile_shader[j] = shdsrc->getShader("nodes_shader",
 835                                 material_type, f->drawtype);
 836                 }
 837
 838                 if (is_water_surface) {
 839                         tile_shader[0] = shdsrc->getShader("water_surface_shader",
 840                                 material_type, f->drawtype);
 841                 }
 842
 843                 // Tiles (fill in f->tiles[])
 844                 for (u16 j = 0; j < 6; j++) {
 845                         fillTileAttribs(tsrc, &f->tiles[j], &tiledef[j], tile_shader[j],
 846                                 use_normal_texture, f->backface_culling, f->alpha, material_type);
 847                 }
 848
 849                 // Special tiles (fill in f->special_tiles[])
 850                 for (u16 j = 0; j < CF_SPECIAL_COUNT; j++) {
 851                         fillTileAttribs(tsrc, &f->special_tiles[j], &f->tiledef_special[j],
 852                                 tile_shader[j], use_normal_texture,
 853                                 f->tiledef_special[j].backface_culling, f->alpha, material_type);
 854                 }
 855
 856                 if ((f->drawtype == NDT_MESH) && (f->mesh != "")) {
 857                         // Meshnode drawtype
 858                         // Read the mesh and apply scale
 859                         f->mesh_ptr[0] = gamedef->getMesh(f->mesh);
 860                         if (f->mesh_ptr[0]){
 861                                 v3f scale = v3f(1.0, 1.0, 1.0) * BS * f->visual_scale;
 862                                 scaleMesh(f->mesh_ptr[0], scale);
 863                                 recalculateBoundingBox(f->mesh_ptr[0]);
 864                                 meshmanip->recalculateNormals(f->mesh_ptr[0], true, false);
 865                         }
 866                 } else if ((f->drawtype == NDT_NODEBOX) &&
 867                                 ((f->node_box.type == NODEBOX_REGULAR) ||
 868                                 (f->node_box.type == NODEBOX_FIXED)) &&
 869                                 (!f->node_box.fixed.empty())) {
 870                         //Convert regular nodebox nodes to meshnodes
 871                         //Change the drawtype and apply scale
 872                         f->drawtype = NDT_MESH;
 873                         f->mesh_ptr[0] = convertNodeboxNodeToMesh(f);
 874                         v3f scale = v3f(1.0, 1.0, 1.0) * f->visual_scale;
 875                         scaleMesh(f->mesh_ptr[0], scale);
 876                         recalculateBoundingBox(f->mesh_ptr[0]);
 877                         meshmanip->recalculateNormals(f->mesh_ptr[0], true, false);
 878                 }
 879
 880                 //Cache 6dfacedir and wallmounted rotated clones of meshes
 881                 if (enable_mesh_cache && f->mesh_ptr[0] && (f->param_type_2 == CPT2_FACEDIR)) {
 882                         for (u16 j = 1; j < 24; j++) {
 883                                 f->mesh_ptr[j] = cloneMesh(f->mesh_ptr[0]);
 884                                 rotateMeshBy6dFacedir(f->mesh_ptr[j], j);
 885                                 recalculateBoundingBox(f->mesh_ptr[j]);
 886                                 meshmanip->recalculateNormals(f->mesh_ptr[j], true, false);
 887                         }
 888                 } else if (enable_mesh_cache && f->mesh_ptr[0] && (f->param_type_2 == CPT2_WALLMOUNTED)) {
 889                         static const u8 wm_to_6d[6] = {20, 0, 16+1, 12+3, 8, 4+2};
 890                         for (u16 j = 1; j < 6; j++) {
 891                                 f->mesh_ptr[j] = cloneMesh(f->mesh_ptr[0]);
 892                                 rotateMeshBy6dFacedir(f->mesh_ptr[j], wm_to_6d[j]);
 893                                 recalculateBoundingBox(f->mesh_ptr[j]);
 894                                 meshmanip->recalculateNormals(f->mesh_ptr[j], true, false);
 895                         }
 896                         rotateMeshBy6dFacedir(f->mesh_ptr[0], wm_to_6d[0]);
 897                         recalculateBoundingBox(f->mesh_ptr[0]);
 898                         meshmanip->recalculateNormals(f->mesh_ptr[0], true, false);
 899                 }
 900         }
 901 #endif
 902 }
 903
 904
 905 #ifndef SERVER
 906 void CNodeDefManager::fillTileAttribs(ITextureSource *tsrc, TileSpec *tile,
 907                 TileDef *tiledef, u32 shader_id, bool use_normal_texture,
 908                 bool backface_culling, u8 alpha, u8 material_type)
 909 {
 910         tile->shader_id     = shader_id;
 911         tile->texture       = tsrc->getTexture(tiledef->name, &tile->texture_id);
 912         tile->alpha         = alpha;
 913         tile->material_type = material_type;
 914
 915         // Normal texture
 916         if (use_normal_texture)
 917                 tile->normal_texture = tsrc->getNormalTexture(tiledef->name);
 918
 919         // Material flags
 920         tile->material_flags = 0;
 921         if (backface_culling)
 922                 tile->material_flags |= MATERIAL_FLAG_BACKFACE_CULLING;
 923         if (tiledef->animation.type == TAT_VERTICAL_FRAMES)
 924                 tile->material_flags |= MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
 925
 926         // Animation parameters
 927         int frame_count = 1;
 928         if (tile->material_flags & MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES) {
 929                 // Get texture size to determine frame count by aspect ratio
 930                 v2u32 size = tile->texture->getOriginalSize();
 931                 int frame_height = (float)size.X /
 932                                 (float)tiledef->animation.aspect_w *
 933                                 (float)tiledef->animation.aspect_h;
 934                 frame_count = size.Y / frame_height;
 935                 int frame_length_ms = 1000.0 * tiledef->animation.length / frame_count;
 936                 tile->animation_frame_count = frame_count;
 937                 tile->animation_frame_length_ms = frame_length_ms;
 938         }
 939
 940         if (frame_count == 1) {
 941                 tile->material_flags &= ~MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
 942         } else {
 943                 std::ostringstream os(std::ios::binary);
 944                 tile->frames.resize(frame_count);
 945
 946                 for (int i = 0; i < frame_count; i++) {
 947
 948                         FrameSpec frame;
 949
 950                         os.str("");
 951                         os << tiledef->name << "^[verticalframe:"
 952                                 << frame_count << ":" << i;
 953
 954                         frame.texture = tsrc->getTexture(os.str(), &frame.texture_id);
 955                         if (tile->normal_texture)
 956                                 frame.normal_texture = tsrc->getNormalTexture(os.str());
 957                         tile->frames[i] = frame;
 958                 }
 959         }
 960 }
 961 #endif
 962
 963
 964 void CNodeDefManager::serialize(std::ostream &os, u16 protocol_version)
 965 {
 966         writeU8(os, 1); // version
 967         u16 count = 0;
 968         std::ostringstream os2(std::ios::binary);
 969         for (u32 i = 0; i < m_content_features.size(); i++) {
 970                 if (i == CONTENT_IGNORE || i == CONTENT_AIR
 971                                 || i == CONTENT_UNKNOWN)
 972                         continue;
 973                 ContentFeatures *f = &m_content_features[i];
 974                 if (f->name == "")
 975                         continue;
 976                 writeU16(os2, i);
 977                 // Wrap it in a string to allow different lengths without
 978                 // strict version incompatibilities
 979                 std::ostringstream wrapper_os(std::ios::binary);
 980                 f->serialize(wrapper_os, protocol_version);
 981                 os2<<serializeString(wrapper_os.str());
 982
 983                 assert(count + 1 > count); // must not overflow
 984                 count++;
 985         }
 986         writeU16(os, count);
 987         os << serializeLongString(os2.str());
 988 }
 989
 990
 991 void CNodeDefManager::deSerialize(std::istream &is)
 992 {
 993         clear();
 994         int version = readU8(is);
 995         if (version != 1)
 996                 throw SerializationError("unsupported NodeDefinitionManager version");
 997         u16 count = readU16(is);
 998         std::istringstream is2(deSerializeLongString(is), std::ios::binary);
 999         ContentFeatures f;
1000         for (u16 n = 0; n < count; n++) {
1001                 u16 i = readU16(is2);
1002
1003                 // Read it from the string wrapper
1004                 std::string wrapper = deSerializeString(is2);
1005                 std::istringstream wrapper_is(wrapper, std::ios::binary);
1006                 f.deSerialize(wrapper_is);
1007
1008                 // Check error conditions
1009                 if (i == CONTENT_IGNORE || i == CONTENT_AIR || i == CONTENT_UNKNOWN) {
1010                         infostream << "NodeDefManager::deSerialize(): WARNING: "
1011                                 "not changing builtin node " << i << std::endl;
1012                         continue;
1013                 }
1014                 if (f.name == "") {
1015                         infostream << "NodeDefManager::deSerialize(): WARNING: "
1016                                 "received empty name" << std::endl;
1017                         continue;
1018                 }
1019
1020                 // Ignore aliases
1021                 u16 existing_id;
1022                 if (m_name_id_mapping.getId(f.name, existing_id) && i != existing_id) {
1023                         infostream << "NodeDefManager::deSerialize(): WARNING: "
1024                                 "already defined with different ID: " << f.name << std::endl;
1025                         continue;
1026                 }
1027
1028                 // All is ok, add node definition with the requested ID
1029                 if (i >= m_content_features.size())
1030                         m_content_features.resize((u32)(i) + 1);
1031                 m_content_features[i] = f;
1032                 addNameIdMapping(i, f.name);
1033                 verbosestream << "deserialized " << f.name << std::endl;
1034         }
1035 }
1036
1037
1038 void CNodeDefManager::addNameIdMapping(content_t i, std::string name)
1039 {
1040         m_name_id_mapping.set(i, name);
1041         m_name_id_mapping_with_aliases.insert(std::make_pair(name, i));
1042 }
1043
1044
1045 IWritableNodeDefManager *createNodeDefManager()
1046 {
1047         return new CNodeDefManager();
1048 }
1049
1050
1051 //// Serialization of old ContentFeatures formats
1052 void ContentFeatures::serializeOld(std::ostream &os, u16 protocol_version)
1053 {
1054         if (protocol_version == 13)
1055         {
1056                 writeU8(os, 5); // version
1057                 os<<serializeString(name);
1058                 writeU16(os, groups.size());
1059                 for (ItemGroupList::const_iterator
1060                                 i = groups.begin(); i != groups.end(); i++) {
1061                         os<<serializeString(i->first);
1062                         writeS16(os, i->second);
1063                 }
1064                 writeU8(os, drawtype);
1065                 writeF1000(os, visual_scale);
1066                 writeU8(os, 6);
1067                 for (u32 i = 0; i < 6; i++)
1068                         tiledef[i].serialize(os, protocol_version);
1069                 //CF_SPECIAL_COUNT = 2 before cf ver. 7 and protocol ver. 24
1070                 writeU8(os, 2);
1071                 for (u32 i = 0; i < 2; i++)
1072                         tiledef_special[i].serialize(os, protocol_version);
1073                 writeU8(os, alpha);
1074                 writeU8(os, post_effect_color.getAlpha());
1075                 writeU8(os, post_effect_color.getRed());
1076                 writeU8(os, post_effect_color.getGreen());
1077                 writeU8(os, post_effect_color.getBlue());
1078                 writeU8(os, param_type);
1079                 writeU8(os, param_type_2);
1080                 writeU8(os, is_ground_content);
1081                 writeU8(os, light_propagates);
1082                 writeU8(os, sunlight_propagates);
1083                 writeU8(os, walkable);
1084                 writeU8(os, pointable);
1085                 writeU8(os, diggable);
1086                 writeU8(os, climbable);
1087                 writeU8(os, buildable_to);
1088                 os<<serializeString(""); // legacy: used to be metadata_name
1089                 writeU8(os, liquid_type);
1090                 os<<serializeString(liquid_alternative_flowing);
1091                 os<<serializeString(liquid_alternative_source);
1092                 writeU8(os, liquid_viscosity);
1093                 writeU8(os, light_source);
1094                 writeU32(os, damage_per_second);
1095                 node_box.serialize(os, protocol_version);
1096                 selection_box.serialize(os, protocol_version);
1097                 writeU8(os, legacy_facedir_simple);
1098                 writeU8(os, legacy_wallmounted);
1099                 serializeSimpleSoundSpec(sound_footstep, os);
1100                 serializeSimpleSoundSpec(sound_dig, os);
1101                 serializeSimpleSoundSpec(sound_dug, os);
1102         }
1103         else if (protocol_version > 13 && protocol_version < 24) {
1104                 writeU8(os, 6); // version
1105                 os<<serializeString(name);
1106                 writeU16(os, groups.size());
1107                 for (ItemGroupList::const_iterator
1108                         i = groups.begin(); i != groups.end(); i++) {
1109                                 os<<serializeString(i->first);
1110                                 writeS16(os, i->second);
1111                 }
1112                 writeU8(os, drawtype);
1113                 writeF1000(os, visual_scale);
1114                 writeU8(os, 6);
1115                 for (u32 i = 0; i < 6; i++)
1116                         tiledef[i].serialize(os, protocol_version);
1117                 //CF_SPECIAL_COUNT = 2 before cf ver. 7 and protocol ver. 24
1118                 writeU8(os, 2);
1119                 for (u32 i = 0; i < 2; i++)
1120                         tiledef_special[i].serialize(os, protocol_version);
1121                 writeU8(os, alpha);
1122                 writeU8(os, post_effect_color.getAlpha());
1123                 writeU8(os, post_effect_color.getRed());
1124                 writeU8(os, post_effect_color.getGreen());
1125                 writeU8(os, post_effect_color.getBlue());
1126                 writeU8(os, param_type);
1127                 writeU8(os, param_type_2);
1128                 writeU8(os, is_ground_content);
1129                 writeU8(os, light_propagates);
1130                 writeU8(os, sunlight_propagates);
1131                 writeU8(os, walkable);
1132                 writeU8(os, pointable);
1133                 writeU8(os, diggable);
1134                 writeU8(os, climbable);
1135                 writeU8(os, buildable_to);
1136                 os<<serializeString(""); // legacy: used to be metadata_name
1137                 writeU8(os, liquid_type);
1138                 os<<serializeString(liquid_alternative_flowing);
1139                 os<<serializeString(liquid_alternative_source);
1140                 writeU8(os, liquid_viscosity);
1141                 writeU8(os, liquid_renewable);
1142                 writeU8(os, light_source);
1143                 writeU32(os, damage_per_second);
1144                 node_box.serialize(os, protocol_version);
1145                 selection_box.serialize(os, protocol_version);
1146                 writeU8(os, legacy_facedir_simple);
1147                 writeU8(os, legacy_wallmounted);
1148                 serializeSimpleSoundSpec(sound_footstep, os);
1149                 serializeSimpleSoundSpec(sound_dig, os);
1150                 serializeSimpleSoundSpec(sound_dug, os);
1151                 writeU8(os, rightclickable);
1152                 writeU8(os, drowning);
1153                 writeU8(os, leveled);
1154                 writeU8(os, liquid_range);
1155         } else
1156                 throw SerializationError("ContentFeatures::serialize(): "
1157                         "Unsupported version requested");
1158 }
1159
1160
1161 void ContentFeatures::deSerializeOld(std::istream &is, int version)
1162 {
1163         if (version == 5) // In PROTOCOL_VERSION 13
1164         {
1165                 name = deSerializeString(is);
1166                 groups.clear();
1167                 u32 groups_size = readU16(is);
1168                 for(u32 i=0; i<groups_size; i++){
1169                         std::string name = deSerializeString(is);
1170                         int value = readS16(is);
1171                         groups[name] = value;
1172                 }
1173                 drawtype = (enum NodeDrawType)readU8(is);
1174                 visual_scale = readF1000(is);
1175                 if (readU8(is) != 6)
1176                         throw SerializationError("unsupported tile count");
1177                 for (u32 i = 0; i < 6; i++)
1178                         tiledef[i].deSerialize(is);
1179                 if (readU8(is) != CF_SPECIAL_COUNT)
1180                         throw SerializationError("unsupported CF_SPECIAL_COUNT");
1181                 for (u32 i = 0; i < CF_SPECIAL_COUNT; i++)
1182                         tiledef_special[i].deSerialize(is);
1183                 alpha = readU8(is);
1184                 post_effect_color.setAlpha(readU8(is));
1185                 post_effect_color.setRed(readU8(is));
1186                 post_effect_color.setGreen(readU8(is));
1187                 post_effect_color.setBlue(readU8(is));
1188                 param_type = (enum ContentParamType)readU8(is);
1189                 param_type_2 = (enum ContentParamType2)readU8(is);
1190                 is_ground_content = readU8(is);
1191                 light_propagates = readU8(is);
1192                 sunlight_propagates = readU8(is);
1193                 walkable = readU8(is);
1194                 pointable = readU8(is);
1195                 diggable = readU8(is);
1196                 climbable = readU8(is);
1197                 buildable_to = readU8(is);
1198                 deSerializeString(is); // legacy: used to be metadata_name
1199                 liquid_type = (enum LiquidType)readU8(is);
1200                 liquid_alternative_flowing = deSerializeString(is);
1201                 liquid_alternative_source = deSerializeString(is);
1202                 liquid_viscosity = readU8(is);
1203                 light_source = readU8(is);
1204                 damage_per_second = readU32(is);
1205                 node_box.deSerialize(is);
1206                 selection_box.deSerialize(is);
1207                 legacy_facedir_simple = readU8(is);
1208                 legacy_wallmounted = readU8(is);
1209                 deSerializeSimpleSoundSpec(sound_footstep, is);
1210                 deSerializeSimpleSoundSpec(sound_dig, is);
1211                 deSerializeSimpleSoundSpec(sound_dug, is);
1212         } else if (version == 6) {
1213                 name = deSerializeString(is);
1214                 groups.clear();
1215                 u32 groups_size = readU16(is);
1216                 for (u32 i = 0; i < groups_size; i++) {
1217                         std::string name = deSerializeString(is);
1218                         int     value = readS16(is);
1219                         groups[name] = value;
1220                 }
1221                 drawtype = (enum NodeDrawType)readU8(is);
1222                 visual_scale = readF1000(is);
1223                 if (readU8(is) != 6)
1224                         throw SerializationError("unsupported tile count");
1225                 for (u32 i = 0; i < 6; i++)
1226                         tiledef[i].deSerialize(is);
1227                 // CF_SPECIAL_COUNT in version 6 = 2
1228                 if (readU8(is) != 2)
1229                         throw SerializationError("unsupported CF_SPECIAL_COUNT");
1230                 for (u32 i = 0; i < 2; i++)
1231                         tiledef_special[i].deSerialize(is);
1232                 alpha = readU8(is);
1233                 post_effect_color.setAlpha(readU8(is));
1234                 post_effect_color.setRed(readU8(is));
1235                 post_effect_color.setGreen(readU8(is));
1236                 post_effect_color.setBlue(readU8(is));
1237                 param_type = (enum ContentParamType)readU8(is);
1238                 param_type_2 = (enum ContentParamType2)readU8(is);
1239                 is_ground_content = readU8(is);
1240                 light_propagates = readU8(is);
1241                 sunlight_propagates = readU8(is);
1242                 walkable = readU8(is);
1243                 pointable = readU8(is);
1244                 diggable = readU8(is);
1245                 climbable = readU8(is);
1246                 buildable_to = readU8(is);
1247                 deSerializeString(is); // legacy: used to be metadata_name
1248                 liquid_type = (enum LiquidType)readU8(is);
1249                 liquid_alternative_flowing = deSerializeString(is);
1250                 liquid_alternative_source = deSerializeString(is);
1251                 liquid_viscosity = readU8(is);
1252                 liquid_renewable = readU8(is);
1253                 light_source = readU8(is);
1254                 damage_per_second = readU32(is);
1255                 node_box.deSerialize(is);
1256                 selection_box.deSerialize(is);
1257                 legacy_facedir_simple = readU8(is);
1258                 legacy_wallmounted = readU8(is);
1259                 deSerializeSimpleSoundSpec(sound_footstep, is);
1260                 deSerializeSimpleSoundSpec(sound_dig, is);
1261                 deSerializeSimpleSoundSpec(sound_dug, is);
1262                 rightclickable = readU8(is);
1263                 drowning = readU8(is);
1264                 leveled = readU8(is);
1265                 liquid_range = readU8(is);
1266         } else {
1267                 throw SerializationError("unsupported ContentFeatures version");
1268         }
1269 }
1270
1271
1272 void CNodeDefManager::pendNodeResolve(NodeResolveInfo *nri)
1273 {
1274         nri->resolver->m_ndef = this;
1275         m_pending_node_lookups.push_back(nri);
1276 }
1277
1278
1279 void CNodeDefManager::cancelNodeResolve(NodeResolver *resolver)
1280 {
1281         for (std::list<NodeResolveInfo *>::iterator
1282                         it = m_pending_node_lookups.begin();
1283                         it != m_pending_node_lookups.end();
1284                         ++it) {
1285                 NodeResolveInfo *nri = *it;
1286                 if (resolver == nri->resolver) {
1287                         it = m_pending_node_lookups.erase(it);
1288                         delete nri;
1289                 }
1290         }
1291 }
1292
1293
1294 void CNodeDefManager::runNodeResolverCallbacks()
1295 {
1296         while (!m_pending_node_lookups.empty()) {
1297                 NodeResolveInfo *nri = m_pending_node_lookups.front();
1298                 m_pending_node_lookups.pop_front();
1299                 nri->resolver->resolveNodeNames(nri);
1300                 nri->resolver->m_lookup_done = true;
1301                 delete nri;
1302         }
1303 }
1304
1305
1306 bool CNodeDefManager::getIdFromResolveInfo(NodeResolveInfo *nri,
1307         const std::string &node_alt, content_t c_fallback, content_t &result)
1308 {
1309         if (nri->nodenames.empty()) {
1310                 result = c_fallback;
1311                 errorstream << "CNodeDefManager::getIdFromResolveInfo: empty "
1312                         "nodenames list" << std::endl;
1313                 return false;
1314         }
1315
1316         content_t c;
1317         std::string name = nri->nodenames.front();
1318         nri->nodenames.pop_front();
1319
1320         bool success = getId(name, c);
1321         if (!success && node_alt != "") {
1322                 name = node_alt;
1323                 success = getId(name, c);
1324         }
1325
1326         if (!success) {
1327                 errorstream << "CNodeDefManager::getIdFromResolveInfo: Failed to "
1328                         "resolve node name '" << name << "'." << std::endl;
1329                 c = c_fallback;
1330         }
1331
1332         result = c;
1333         return success;
1334 }
1335
1336
1337 bool CNodeDefManager::getIdsFromResolveInfo(NodeResolveInfo *nri,
1338         std::vector<content_t> &result)
1339 {
1340         if (nri->nodename_sizes.empty()) {
1341                 errorstream << "CNodeDefManager::getIdsFromResolveInfo: empty "
1342                         "nodename_sizes list" << std::endl;
1343                 return false;
1344         }
1345
1346         size_t nitems = nri->nodename_sizes.front();
1347         nri->nodename_sizes.pop_front();
1348
1349         while (nitems--) {
1350                 if (nri->nodenames.empty()) {
1351                         errorstream << "" << std::endl;
1352                         return false;
1353                 }
1354
1355                 content_t c;
1356                 if (getId(nri->nodenames.front(), c)) {
1357                         result.push_back(c);
1358                 } else {
1359                         errorstream << "CNodeDefManager::getIdsFromResolveInfo: empty "
1360                                 "nodenames list" << std::endl;
1361                 }
1362
1363                 nri->nodenames.pop_front();
1364         }
1365
1366         return true;
1367 }