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 "itemdef.h"
  23 #ifndef SERVER
  24 #include "client/tile.h"
  25 #include "mesh.h"
  26 #include <IMeshManipulator.h>
  27 #endif
  28 #include "log.h"
  29 #include "settings.h"
  30 #include "nameidmapping.h"
  31 #include "util/numeric.h"
  32 #include "util/serialize.h"
  33 #include "exceptions.h"
  34 #include "debug.h"
  35 #include "gamedef.h"
  36
  37 /*
  38         NodeBox
  39 */
  40
  41 void NodeBox::reset()
  42 {
  43         type = NODEBOX_REGULAR;
  44         // default is empty
  45         fixed.clear();
  46         // default is sign/ladder-like
  47         wall_top = aabb3f(-BS/2, BS/2-BS/16., -BS/2, BS/2, BS/2, BS/2);
  48         wall_bottom = aabb3f(-BS/2, -BS/2, -BS/2, BS/2, -BS/2+BS/16., BS/2);
  49         wall_side = aabb3f(-BS/2, -BS/2, -BS/2, -BS/2+BS/16., BS/2, BS/2);
  50 }
  51
  52 void NodeBox::serialize(std::ostream &os, u16 protocol_version) const
  53 {
  54         int version = protocol_version >= 21 ? 2 : 1;
  55         writeU8(os, version);
  56
  57         if (version == 1 && type == NODEBOX_LEVELED)
  58                 writeU8(os, NODEBOX_FIXED);
  59         else
  60                 writeU8(os, type);
  61
  62         if(type == NODEBOX_FIXED || type == NODEBOX_LEVELED)
  63         {
  64                 writeU16(os, fixed.size());
  65                 for(std::vector<aabb3f>::const_iterator
  66                                 i = fixed.begin();
  67                                 i != fixed.end(); i++)
  68                 {
  69                         writeV3F1000(os, i->MinEdge);
  70                         writeV3F1000(os, i->MaxEdge);
  71                 }
  72         }
  73         else if(type == NODEBOX_WALLMOUNTED)
  74         {
  75                 writeV3F1000(os, wall_top.MinEdge);
  76                 writeV3F1000(os, wall_top.MaxEdge);
  77                 writeV3F1000(os, wall_bottom.MinEdge);
  78                 writeV3F1000(os, wall_bottom.MaxEdge);
  79                 writeV3F1000(os, wall_side.MinEdge);
  80                 writeV3F1000(os, wall_side.MaxEdge);
  81         }
  82 }
  83
  84 void NodeBox::deSerialize(std::istream &is)
  85 {
  86         int version = readU8(is);
  87         if(version < 1 || version > 2)
  88                 throw SerializationError("unsupported NodeBox version");
  89
  90         reset();
  91
  92         type = (enum NodeBoxType)readU8(is);
  93
  94         if(type == NODEBOX_FIXED || type == NODEBOX_LEVELED)
  95         {
  96                 u16 fixed_count = readU16(is);
  97                 while(fixed_count--)
  98                 {
  99                         aabb3f box;
 100                         box.MinEdge = readV3F1000(is);
 101                         box.MaxEdge = readV3F1000(is);
 102                         fixed.push_back(box);
 103                 }
 104         }
 105         else if(type == NODEBOX_WALLMOUNTED)
 106         {
 107                 wall_top.MinEdge = readV3F1000(is);
 108                 wall_top.MaxEdge = readV3F1000(is);
 109                 wall_bottom.MinEdge = readV3F1000(is);
 110                 wall_bottom.MaxEdge = readV3F1000(is);
 111                 wall_side.MinEdge = readV3F1000(is);
 112                 wall_side.MaxEdge = readV3F1000(is);
 113         }
 114 }
 115
 116 /*
 117         TileDef
 118 */
 119
 120 void TileDef::serialize(std::ostream &os, u16 protocol_version) const
 121 {
 122         if(protocol_version >= 17)
 123                 writeU8(os, 1);
 124         else
 125                 writeU8(os, 0);
 126         os<<serializeString(name);
 127         writeU8(os, animation.type);
 128         writeU16(os, animation.aspect_w);
 129         writeU16(os, animation.aspect_h);
 130         writeF1000(os, animation.length);
 131         if(protocol_version >= 17)
 132                 writeU8(os, backface_culling);
 133 }
 134
 135 void TileDef::deSerialize(std::istream &is)
 136 {
 137         int version = readU8(is);
 138         name = deSerializeString(is);
 139         animation.type = (TileAnimationType)readU8(is);
 140         animation.aspect_w = readU16(is);
 141         animation.aspect_h = readU16(is);
 142         animation.length = readF1000(is);
 143         if(version >= 1)
 144                 backface_culling = readU8(is);
 145 }
 146
 147 /*
 148         SimpleSoundSpec serialization
 149 */
 150
 151 static void serializeSimpleSoundSpec(const SimpleSoundSpec &ss,
 152                 std::ostream &os)
 153 {
 154         os<<serializeString(ss.name);
 155         writeF1000(os, ss.gain);
 156 }
 157 static void deSerializeSimpleSoundSpec(SimpleSoundSpec &ss, std::istream &is)
 158 {
 159         ss.name = deSerializeString(is);
 160         ss.gain = readF1000(is);
 161 }
 162
 163 /*
 164         ContentFeatures
 165 */
 166
 167 ContentFeatures::ContentFeatures()
 168 {
 169         reset();
 170 }
 171
 172 ContentFeatures::~ContentFeatures()
 173 {
 174 }
 175
 176 void ContentFeatures::reset()
 177 {
 178         /*
 179                 Cached stuff
 180         */
 181 #ifndef SERVER
 182         solidness = 2;
 183         visual_solidness = 0;
 184         backface_culling = true;
 185 #endif
 186         has_on_construct = false;
 187         has_on_destruct = false;
 188         has_after_destruct = false;
 189         /*
 190                 Actual data
 191
 192                 NOTE: Most of this is always overridden by the default values given
 193                       in builtin.lua
 194         */
 195         name = "";
 196         groups.clear();
 197         // Unknown nodes can be dug
 198         groups["dig_immediate"] = 2;
 199         drawtype = NDT_NORMAL;
 200         mesh = "";
 201 #ifndef SERVER
 202         for(u32 i = 0; i < 24; i++)
 203                 mesh_ptr[i] = NULL;
 204 #endif
 205         visual_scale = 1.0;
 206         for(u32 i = 0; i < 6; i++)
 207                 tiledef[i] = TileDef();
 208         for(u16 j = 0; j < CF_SPECIAL_COUNT; j++)
 209                 tiledef_special[j] = TileDef();
 210         alpha = 255;
 211         post_effect_color = video::SColor(0, 0, 0, 0);
 212         param_type = CPT_NONE;
 213         param_type_2 = CPT2_NONE;
 214         is_ground_content = false;
 215         light_propagates = false;
 216         sunlight_propagates = false;
 217         walkable = true;
 218         pointable = true;
 219         diggable = true;
 220         climbable = false;
 221         buildable_to = false;
 222         rightclickable = true;
 223         leveled = 0;
 224         liquid_type = LIQUID_NONE;
 225         liquid_alternative_flowing = "";
 226         liquid_alternative_source = "";
 227         liquid_viscosity = 0;
 228         liquid_renewable = true;
 229         liquid_range = LIQUID_LEVEL_MAX+1;
 230         drowning = 0;
 231         light_source = 0;
 232         damage_per_second = 0;
 233         node_box = NodeBox();
 234         selection_box = NodeBox();
 235         collision_box = NodeBox();
 236         waving = 0;
 237         legacy_facedir_simple = false;
 238         legacy_wallmounted = false;
 239         sound_footstep = SimpleSoundSpec();
 240         sound_dig = SimpleSoundSpec("__group");
 241         sound_dug = SimpleSoundSpec();
 242 }
 243
 244 void ContentFeatures::serialize(std::ostream &os, u16 protocol_version) const
 245 {
 246         if(protocol_version < 24){
 247                 serializeOld(os, protocol_version);
 248                 return;
 249         }
 250
 251         writeU8(os, 7); // version
 252         os<<serializeString(name);
 253         writeU16(os, groups.size());
 254         for(ItemGroupList::const_iterator
 255                         i = groups.begin(); i != groups.end(); i++){
 256                 os<<serializeString(i->first);
 257                 writeS16(os, i->second);
 258         }
 259         writeU8(os, drawtype);
 260         writeF1000(os, visual_scale);
 261         writeU8(os, 6);
 262         for(u32 i = 0; i < 6; i++)
 263                 tiledef[i].serialize(os, protocol_version);
 264         writeU8(os, CF_SPECIAL_COUNT);
 265         for(u32 i = 0; i < CF_SPECIAL_COUNT; i++){
 266                 tiledef_special[i].serialize(os, protocol_version);
 267         }
 268         writeU8(os, alpha);
 269         writeU8(os, post_effect_color.getAlpha());
 270         writeU8(os, post_effect_color.getRed());
 271         writeU8(os, post_effect_color.getGreen());
 272         writeU8(os, post_effect_color.getBlue());
 273         writeU8(os, param_type);
 274         writeU8(os, param_type_2);
 275         writeU8(os, is_ground_content);
 276         writeU8(os, light_propagates);
 277         writeU8(os, sunlight_propagates);
 278         writeU8(os, walkable);
 279         writeU8(os, pointable);
 280         writeU8(os, diggable);
 281         writeU8(os, climbable);
 282         writeU8(os, buildable_to);
 283         os<<serializeString(""); // legacy: used to be metadata_name
 284         writeU8(os, liquid_type);
 285         os<<serializeString(liquid_alternative_flowing);
 286         os<<serializeString(liquid_alternative_source);
 287         writeU8(os, liquid_viscosity);
 288         writeU8(os, liquid_renewable);
 289         writeU8(os, light_source);
 290         writeU32(os, damage_per_second);
 291         node_box.serialize(os, protocol_version);
 292         selection_box.serialize(os, protocol_version);
 293         writeU8(os, legacy_facedir_simple);
 294         writeU8(os, legacy_wallmounted);
 295         serializeSimpleSoundSpec(sound_footstep, os);
 296         serializeSimpleSoundSpec(sound_dig, os);
 297         serializeSimpleSoundSpec(sound_dug, os);
 298         writeU8(os, rightclickable);
 299         writeU8(os, drowning);
 300         writeU8(os, leveled);
 301         writeU8(os, liquid_range);
 302         writeU8(os, waving);
 303         // Stuff below should be moved to correct place in a version that otherwise changes
 304         // the protocol version
 305         os<<serializeString(mesh);
 306         collision_box.serialize(os, protocol_version);
 307 }
 308
 309 void ContentFeatures::deSerialize(std::istream &is)
 310 {
 311         int version = readU8(is);
 312         if(version != 7){
 313                 deSerializeOld(is, version);
 314                 return;
 315         }
 316
 317         name = deSerializeString(is);
 318         groups.clear();
 319         u32 groups_size = readU16(is);
 320         for(u32 i = 0; i < groups_size; i++){
 321                 std::string name = deSerializeString(is);
 322                 int value = readS16(is);
 323                 groups[name] = value;
 324         }
 325         drawtype = (enum NodeDrawType)readU8(is);
 326         visual_scale = readF1000(is);
 327         if(readU8(is) != 6)
 328                 throw SerializationError("unsupported tile count");
 329         for(u32 i = 0; i < 6; i++)
 330                 tiledef[i].deSerialize(is);
 331         if(readU8(is) != CF_SPECIAL_COUNT)
 332                 throw SerializationError("unsupported CF_SPECIAL_COUNT");
 333         for(u32 i = 0; i < CF_SPECIAL_COUNT; i++)
 334                 tiledef_special[i].deSerialize(is);
 335         alpha = readU8(is);
 336         post_effect_color.setAlpha(readU8(is));
 337         post_effect_color.setRed(readU8(is));
 338         post_effect_color.setGreen(readU8(is));
 339         post_effect_color.setBlue(readU8(is));
 340         param_type = (enum ContentParamType)readU8(is);
 341         param_type_2 = (enum ContentParamType2)readU8(is);
 342         is_ground_content = readU8(is);
 343         light_propagates = readU8(is);
 344         sunlight_propagates = readU8(is);
 345         walkable = readU8(is);
 346         pointable = readU8(is);
 347         diggable = readU8(is);
 348         climbable = readU8(is);
 349         buildable_to = readU8(is);
 350         deSerializeString(is); // legacy: used to be metadata_name
 351         liquid_type = (enum LiquidType)readU8(is);
 352         liquid_alternative_flowing = deSerializeString(is);
 353         liquid_alternative_source = deSerializeString(is);
 354         liquid_viscosity = readU8(is);
 355         liquid_renewable = readU8(is);
 356         light_source = readU8(is);
 357         damage_per_second = readU32(is);
 358         node_box.deSerialize(is);
 359         selection_box.deSerialize(is);
 360         legacy_facedir_simple = readU8(is);
 361         legacy_wallmounted = readU8(is);
 362         deSerializeSimpleSoundSpec(sound_footstep, is);
 363         deSerializeSimpleSoundSpec(sound_dig, is);
 364         deSerializeSimpleSoundSpec(sound_dug, is);
 365         rightclickable = readU8(is);
 366         drowning = readU8(is);
 367         leveled = readU8(is);
 368         liquid_range = readU8(is);
 369         waving = readU8(is);
 370         // If you add anything here, insert it primarily inside the try-catch
 371         // block to not need to increase the version.
 372         try{
 373                 // Stuff below should be moved to correct place in a version that
 374                 // otherwise changes the protocol version
 375         mesh = deSerializeString(is);
 376         collision_box.deSerialize(is);
 377         }catch(SerializationError &e) {};
 378 }
 379
 380 /*
 381         CNodeDefManager
 382 */
 383
 384 class CNodeDefManager: public IWritableNodeDefManager {
 385 public:
 386         CNodeDefManager();
 387         virtual ~CNodeDefManager();
 388         void clear();
 389         virtual IWritableNodeDefManager *clone();
 390         inline virtual const ContentFeatures& get(content_t c) const;
 391         inline virtual const ContentFeatures& get(const MapNode &n) const;
 392         virtual bool getId(const std::string &name, content_t &result) const;
 393         virtual content_t getId(const std::string &name) const;
 394         virtual void getIds(const std::string &name, std::set<content_t> &result) const;
 395         virtual const ContentFeatures& get(const std::string &name) const;
 396         content_t allocateId();
 397         virtual content_t set(const std::string &name, const ContentFeatures &def);
 398         virtual content_t allocateDummy(const std::string &name);
 399         virtual void updateAliases(IItemDefManager *idef);
 400         virtual void updateTextures(IGameDef *gamedef,
 401                 void (*progress_cbk)(void *progress_args, u32 progress, u32 max_progress),
 402                 void *progress_cbk_args);
 403         void serialize(std::ostream &os, u16 protocol_version) const;
 404         void deSerialize(std::istream &is);
 405
 406         inline virtual bool getNodeRegistrationStatus() const;
 407         inline virtual void setNodeRegistrationStatus(bool completed);
 408
 409         virtual void pendNodeResolve(NodeResolver *nr, NodeResolveMethod how);
 410         virtual bool cancelNodeResolveCallback(NodeResolver *nr);
 411         virtual void runNodeResolveCallbacks();
 412         virtual void resetNodeResolveState();
 413
 414 private:
 415         void addNameIdMapping(content_t i, std::string name);
 416 #ifndef SERVER
 417         void fillTileAttribs(ITextureSource *tsrc, TileSpec *tile, TileDef *tiledef,
 418                 u32 shader_id, bool use_normal_texture, bool backface_culling,
 419                 u8 alpha, u8 material_type);
 420 #endif
 421
 422         // Features indexed by id
 423         std::vector<ContentFeatures> m_content_features;
 424
 425         // A mapping for fast converting back and forth between names and ids
 426         NameIdMapping m_name_id_mapping;
 427
 428         // Like m_name_id_mapping, but only from names to ids, and includes
 429         // item aliases too. Updated by updateAliases()
 430         // Note: Not serialized.
 431
 432         std::map<std::string, content_t> m_name_id_mapping_with_aliases;
 433
 434         // A mapping from groups to a list of content_ts (and their levels)
 435         // that belong to it.  Necessary for a direct lookup in getIds().
 436         // Note: Not serialized.
 437         std::map<std::string, GroupItems> m_group_to_items;
 438
 439         // Next possibly free id
 440         content_t m_next_id;
 441
 442         // NodeResolvers to callback once node registration has ended
 443         std::vector<NodeResolver *> m_pending_resolve_callbacks;
 444
 445         // True when all nodes have been registered
 446         bool m_node_registration_complete;
 447 };
 448
 449
 450 CNodeDefManager::CNodeDefManager()
 451 {
 452         clear();
 453 }
 454
 455
 456 CNodeDefManager::~CNodeDefManager()
 457 {
 458 #ifndef SERVER
 459         for (u32 i = 0; i < m_content_features.size(); i++) {
 460                 ContentFeatures *f = &m_content_features[i];
 461                 for (u32 j = 0; j < 24; j++) {
 462                         if (f->mesh_ptr[j])
 463                                 f->mesh_ptr[j]->drop();
 464                 }
 465         }
 466 #endif
 467 }
 468
 469
 470 void CNodeDefManager::clear()
 471 {
 472         m_content_features.clear();
 473         m_name_id_mapping.clear();
 474         m_name_id_mapping_with_aliases.clear();
 475         m_group_to_items.clear();
 476         m_next_id = 0;
 477
 478         resetNodeResolveState();
 479
 480         u32 initial_length = 0;
 481         initial_length = MYMAX(initial_length, CONTENT_UNKNOWN + 1);
 482         initial_length = MYMAX(initial_length, CONTENT_AIR + 1);
 483         initial_length = MYMAX(initial_length, CONTENT_IGNORE + 1);
 484         m_content_features.resize(initial_length);
 485
 486         // Set CONTENT_UNKNOWN
 487         {
 488                 ContentFeatures f;
 489                 f.name = "unknown";
 490                 // Insert directly into containers
 491                 content_t c = CONTENT_UNKNOWN;
 492                 m_content_features[c] = f;
 493                 addNameIdMapping(c, f.name);
 494         }
 495
 496         // Set CONTENT_AIR
 497         {
 498                 ContentFeatures f;
 499                 f.name                = "air";
 500                 f.drawtype            = NDT_AIRLIKE;
 501                 f.param_type          = CPT_LIGHT;
 502                 f.light_propagates    = true;
 503                 f.sunlight_propagates = true;
 504                 f.walkable            = false;
 505                 f.pointable           = false;
 506                 f.diggable            = false;
 507                 f.buildable_to        = true;
 508                 f.is_ground_content   = true;
 509                 // Insert directly into containers
 510                 content_t c = CONTENT_AIR;
 511                 m_content_features[c] = f;
 512                 addNameIdMapping(c, f.name);
 513         }
 514
 515         // Set CONTENT_IGNORE
 516         {
 517                 ContentFeatures f;
 518                 f.name                = "ignore";
 519                 f.drawtype            = NDT_AIRLIKE;
 520                 f.param_type          = CPT_NONE;
 521                 f.light_propagates    = false;
 522                 f.sunlight_propagates = false;
 523                 f.walkable            = false;
 524                 f.pointable           = false;
 525                 f.diggable            = false;
 526                 f.buildable_to        = true; // A way to remove accidental CONTENT_IGNOREs
 527                 f.is_ground_content   = true;
 528                 // Insert directly into containers
 529                 content_t c = CONTENT_IGNORE;
 530                 m_content_features[c] = f;
 531                 addNameIdMapping(c, f.name);
 532         }
 533 }
 534
 535
 536 IWritableNodeDefManager *CNodeDefManager::clone()
 537 {
 538         CNodeDefManager *mgr = new CNodeDefManager();
 539         *mgr = *this;
 540         return mgr;
 541 }
 542
 543
 544 inline const ContentFeatures& CNodeDefManager::get(content_t c) const
 545 {
 546         return c < m_content_features.size()
 547                         ? m_content_features[c] : m_content_features[CONTENT_UNKNOWN];
 548 }
 549
 550
 551 inline const ContentFeatures& CNodeDefManager::get(const MapNode &n) const
 552 {
 553         return get(n.getContent());
 554 }
 555
 556
 557 bool CNodeDefManager::getId(const std::string &name, content_t &result) const
 558 {
 559         std::map<std::string, content_t>::const_iterator
 560                 i = m_name_id_mapping_with_aliases.find(name);
 561         if(i == m_name_id_mapping_with_aliases.end())
 562                 return false;
 563         result = i->second;
 564         return true;
 565 }
 566
 567
 568 content_t CNodeDefManager::getId(const std::string &name) const
 569 {
 570         content_t id = CONTENT_IGNORE;
 571         getId(name, id);
 572         return id;
 573 }
 574
 575
 576 void CNodeDefManager::getIds(const std::string &name,
 577                 std::set<content_t> &result) const
 578 {
 579         //TimeTaker t("getIds", NULL, PRECISION_MICRO);
 580         if (name.substr(0,6) != "group:") {
 581                 content_t id = CONTENT_IGNORE;
 582                 if(getId(name, id))
 583                         result.insert(id);
 584                 return;
 585         }
 586         std::string group = name.substr(6);
 587
 588         std::map<std::string, GroupItems>::const_iterator
 589                 i = m_group_to_items.find(group);
 590         if (i == m_group_to_items.end())
 591                 return;
 592
 593         const GroupItems &items = i->second;
 594         for (GroupItems::const_iterator j = items.begin();
 595                 j != items.end(); ++j) {
 596                 if ((*j).second != 0)
 597                         result.insert((*j).first);
 598         }
 599         //printf("getIds: %dus\n", t.stop());
 600 }
 601
 602
 603 const ContentFeatures& CNodeDefManager::get(const std::string &name) const
 604 {
 605         content_t id = CONTENT_UNKNOWN;
 606         getId(name, id);
 607         return get(id);
 608 }
 609
 610
 611 // returns CONTENT_IGNORE if no free ID found
 612 content_t CNodeDefManager::allocateId()
 613 {
 614         for (content_t id = m_next_id;
 615                         id >= m_next_id; // overflow?
 616                         ++id) {
 617                 while (id >= m_content_features.size()) {
 618                         m_content_features.push_back(ContentFeatures());
 619                 }
 620                 const ContentFeatures &f = m_content_features[id];
 621                 if (f.name == "") {
 622                         m_next_id = id + 1;
 623                         return id;
 624                 }
 625         }
 626         // If we arrive here, an overflow occurred in id.
 627         // That means no ID was found
 628         return CONTENT_IGNORE;
 629 }
 630
 631
 632 // IWritableNodeDefManager
 633 content_t CNodeDefManager::set(const std::string &name, const ContentFeatures &def)
 634 {
 635         // Pre-conditions
 636         assert(name != "");
 637         assert(name == def.name);
 638
 639         // Don't allow redefining ignore (but allow air and unknown)
 640         if (name == "ignore") {
 641                 infostream << "NodeDefManager: WARNING: Ignoring "
 642                         "CONTENT_IGNORE redefinition"<<std::endl;
 643                 return CONTENT_IGNORE;
 644         }
 645
 646         content_t id = CONTENT_IGNORE;
 647         if (!m_name_id_mapping.getId(name, id)) { // ignore aliases
 648                 // Get new id
 649                 id = allocateId();
 650                 if (id == CONTENT_IGNORE) {
 651                         infostream << "NodeDefManager: WARNING: Absolute "
 652                                 "limit reached" << std::endl;
 653                         return CONTENT_IGNORE;
 654                 }
 655                 assert(id != CONTENT_IGNORE);
 656                 addNameIdMapping(id, name);
 657         }
 658         m_content_features[id] = def;
 659         verbosestream << "NodeDefManager: registering content id \"" << id
 660                 << "\": name=\"" << def.name << "\""<<std::endl;
 661
 662         // Add this content to the list of all groups it belongs to
 663         // FIXME: This should remove a node from groups it no longer
 664         // belongs to when a node is re-registered
 665         for (ItemGroupList::const_iterator i = def.groups.begin();
 666                 i != def.groups.end(); ++i) {
 667                 std::string group_name = i->first;
 668
 669                 std::map<std::string, GroupItems>::iterator
 670                         j = m_group_to_items.find(group_name);
 671                 if (j == m_group_to_items.end()) {
 672                         m_group_to_items[group_name].push_back(
 673                                         std::make_pair(id, i->second));
 674                 } else {
 675                         GroupItems &items = j->second;
 676                         items.push_back(std::make_pair(id, i->second));
 677                 }
 678         }
 679         return id;
 680 }
 681
 682
 683 content_t CNodeDefManager::allocateDummy(const std::string &name)
 684 {
 685         assert(name != "");     // Pre-condition
 686         ContentFeatures f;
 687         f.name = name;
 688         return set(name, f);
 689 }
 690
 691
 692 void CNodeDefManager::updateAliases(IItemDefManager *idef)
 693 {
 694         std::set<std::string> all = idef->getAll();
 695         m_name_id_mapping_with_aliases.clear();
 696         for (std::set<std::string>::iterator
 697                         i = all.begin(); i != all.end(); i++) {
 698                 std::string name = *i;
 699                 std::string convert_to = idef->getAlias(name);
 700                 content_t id;
 701                 if (m_name_id_mapping.getId(convert_to, id)) {
 702                         m_name_id_mapping_with_aliases.insert(
 703                                         std::make_pair(name, id));
 704                 }
 705         }
 706 }
 707
 708
 709 void CNodeDefManager::updateTextures(IGameDef *gamedef,
 710         void (*progress_callback)(void *progress_args, u32 progress, u32 max_progress),
 711         void *progress_callback_args)
 712 {
 713 #ifndef SERVER
 714         infostream << "CNodeDefManager::updateTextures(): Updating "
 715                 "textures in node definitions" << std::endl;
 716
 717         ITextureSource *tsrc = gamedef->tsrc();
 718         IShaderSource *shdsrc = gamedef->getShaderSource();
 719         scene::ISceneManager* smgr = gamedef->getSceneManager();
 720         scene::IMeshManipulator* meshmanip = smgr->getMeshManipulator();
 721
 722         bool new_style_water           = g_settings->getBool("new_style_water");
 723         bool new_style_leaves          = g_settings->getBool("new_style_leaves");
 724         bool connected_glass           = g_settings->getBool("connected_glass");
 725         bool opaque_water              = g_settings->getBool("opaque_water");
 726         bool enable_shaders            = g_settings->getBool("enable_shaders");
 727         bool enable_bumpmapping        = g_settings->getBool("enable_bumpmapping");
 728         bool enable_parallax_occlusion = g_settings->getBool("enable_parallax_occlusion");
 729         bool enable_mesh_cache         = g_settings->getBool("enable_mesh_cache");
 730
 731         bool use_normal_texture = enable_shaders &&
 732                 (enable_bumpmapping || enable_parallax_occlusion);
 733
 734         u32 size = m_content_features.size();
 735
 736         for (u32 i = 0; i < size; i++) {
 737                 ContentFeatures *f = &m_content_features[i];
 738
 739                 // Figure out the actual tiles to use
 740                 TileDef tiledef[6];
 741                 for (u32 j = 0; j < 6; j++) {
 742                         tiledef[j] = f->tiledef[j];
 743                         if (tiledef[j].name == "")
 744                                 tiledef[j].name = "unknown_node.png";
 745                 }
 746
 747                 bool is_liquid = false;
 748                 bool is_water_surface = false;
 749
 750                 u8 material_type = (f->alpha == 255) ?
 751                         TILE_MATERIAL_BASIC : TILE_MATERIAL_ALPHA;
 752
 753                 switch (f->drawtype) {
 754                 default:
 755                 case NDT_NORMAL:
 756                         f->solidness = 2;
 757                         break;
 758                 case NDT_AIRLIKE:
 759                         f->solidness = 0;
 760                         break;
 761                 case NDT_LIQUID:
 762                         assert(f->liquid_type == LIQUID_SOURCE);
 763                         if (opaque_water)
 764                                 f->alpha = 255;
 765                         if (new_style_water){
 766                                 f->solidness = 0;
 767                         } else {
 768                                 f->solidness = 1;
 769                                 f->backface_culling = false;
 770                         }
 771                         is_liquid = true;
 772                         break;
 773                 case NDT_FLOWINGLIQUID:
 774                         assert(f->liquid_type == LIQUID_FLOWING);
 775                         f->solidness = 0;
 776                         if (opaque_water)
 777                                 f->alpha = 255;
 778                         is_liquid = true;
 779                         break;
 780                 case NDT_GLASSLIKE:
 781                         f->solidness = 0;
 782                         f->visual_solidness = 1;
 783                         break;
 784                 case NDT_GLASSLIKE_FRAMED:
 785                         f->solidness = 0;
 786                         f->visual_solidness = 1;
 787                         break;
 788                 case NDT_GLASSLIKE_FRAMED_OPTIONAL:
 789                         f->solidness = 0;
 790                         f->visual_solidness = 1;
 791                         f->drawtype = connected_glass ? NDT_GLASSLIKE_FRAMED : NDT_GLASSLIKE;
 792                         break;
 793                 case NDT_ALLFACES:
 794                         f->solidness = 0;
 795                         f->visual_solidness = 1;
 796                         break;
 797                 case NDT_ALLFACES_OPTIONAL:
 798                         if (new_style_leaves) {
 799                                 f->drawtype = NDT_ALLFACES;
 800                                 f->solidness = 0;
 801                                 f->visual_solidness = 1;
 802                         } else {
 803                                 f->drawtype = NDT_NORMAL;
 804                                 f->solidness = 2;
 805                                 for (u32 i = 0; i < 6; i++)
 806                                         tiledef[i].name += std::string("^[noalpha");
 807                         }
 808                         if (f->waving == 1)
 809                                 material_type = TILE_MATERIAL_WAVING_LEAVES;
 810                         break;
 811                 case NDT_PLANTLIKE:
 812                         f->solidness = 0;
 813                         f->backface_culling = false;
 814                         if (f->waving == 1)
 815                                 material_type = TILE_MATERIAL_WAVING_PLANTS;
 816                         break;
 817                 case NDT_FIRELIKE:
 818                         f->backface_culling = false;
 819                         f->solidness = 0;
 820                         break;
 821                 case NDT_MESH:
 822                         f->solidness = 0;
 823                         f->backface_culling = false;
 824                         break;
 825                 case NDT_TORCHLIKE:
 826                 case NDT_SIGNLIKE:
 827                 case NDT_FENCELIKE:
 828                 case NDT_RAILLIKE:
 829                 case NDT_NODEBOX:
 830                         f->solidness = 0;
 831                         break;
 832                 }
 833
 834                 if (is_liquid) {
 835                         material_type = (f->alpha == 255) ?
 836                                 TILE_MATERIAL_LIQUID_OPAQUE : TILE_MATERIAL_LIQUID_TRANSPARENT;
 837                         if (f->name == "default:water_source")
 838                                 is_water_surface = true;
 839                 }
 840
 841                 u32 tile_shader[6];
 842                 for (u16 j = 0; j < 6; j++) {
 843                         tile_shader[j] = shdsrc->getShader("nodes_shader",
 844                                 material_type, f->drawtype);
 845                 }
 846
 847                 if (is_water_surface) {
 848                         tile_shader[0] = shdsrc->getShader("water_surface_shader",
 849                                 material_type, f->drawtype);
 850                 }
 851
 852                 // Tiles (fill in f->tiles[])
 853                 for (u16 j = 0; j < 6; j++) {
 854                         fillTileAttribs(tsrc, &f->tiles[j], &tiledef[j], tile_shader[j],
 855                                 use_normal_texture, f->backface_culling, f->alpha, material_type);
 856                 }
 857
 858                 // Special tiles (fill in f->special_tiles[])
 859                 for (u16 j = 0; j < CF_SPECIAL_COUNT; j++) {
 860                         fillTileAttribs(tsrc, &f->special_tiles[j], &f->tiledef_special[j],
 861                                 tile_shader[j], use_normal_texture,
 862                                 f->tiledef_special[j].backface_culling, f->alpha, material_type);
 863                 }
 864
 865                 if ((f->drawtype == NDT_MESH) && (f->mesh != "")) {
 866                         // Meshnode drawtype
 867                         // Read the mesh and apply scale
 868                         f->mesh_ptr[0] = gamedef->getMesh(f->mesh);
 869                         if (f->mesh_ptr[0]){
 870                                 v3f scale = v3f(1.0, 1.0, 1.0) * BS * f->visual_scale;
 871                                 scaleMesh(f->mesh_ptr[0], scale);
 872                                 recalculateBoundingBox(f->mesh_ptr[0]);
 873                                 meshmanip->recalculateNormals(f->mesh_ptr[0], true, false);
 874                         }
 875                 } else if ((f->drawtype == NDT_NODEBOX) &&
 876                                 ((f->node_box.type == NODEBOX_REGULAR) ||
 877                                 (f->node_box.type == NODEBOX_FIXED)) &&
 878                                 (!f->node_box.fixed.empty())) {
 879                         //Convert regular nodebox nodes to meshnodes
 880                         //Change the drawtype and apply scale
 881                         f->drawtype = NDT_MESH;
 882                         f->mesh_ptr[0] = convertNodeboxNodeToMesh(f);
 883                         v3f scale = v3f(1.0, 1.0, 1.0) * f->visual_scale;
 884                         scaleMesh(f->mesh_ptr[0], scale);
 885                         recalculateBoundingBox(f->mesh_ptr[0]);
 886                         meshmanip->recalculateNormals(f->mesh_ptr[0], true, false);
 887                 }
 888
 889                 //Cache 6dfacedir and wallmounted rotated clones of meshes
 890                 if (enable_mesh_cache && f->mesh_ptr[0] && (f->param_type_2 == CPT2_FACEDIR)) {
 891                         for (u16 j = 1; j < 24; j++) {
 892                                 f->mesh_ptr[j] = cloneMesh(f->mesh_ptr[0]);
 893                                 rotateMeshBy6dFacedir(f->mesh_ptr[j], j);
 894                                 recalculateBoundingBox(f->mesh_ptr[j]);
 895                                 meshmanip->recalculateNormals(f->mesh_ptr[j], true, false);
 896                         }
 897                 } else if (enable_mesh_cache && f->mesh_ptr[0] && (f->param_type_2 == CPT2_WALLMOUNTED)) {
 898                         static const u8 wm_to_6d[6] = {20, 0, 16+1, 12+3, 8, 4+2};
 899                         for (u16 j = 1; j < 6; j++) {
 900                                 f->mesh_ptr[j] = cloneMesh(f->mesh_ptr[0]);
 901                                 rotateMeshBy6dFacedir(f->mesh_ptr[j], wm_to_6d[j]);
 902                                 recalculateBoundingBox(f->mesh_ptr[j]);
 903                                 meshmanip->recalculateNormals(f->mesh_ptr[j], true, false);
 904                         }
 905                         rotateMeshBy6dFacedir(f->mesh_ptr[0], wm_to_6d[0]);
 906                         recalculateBoundingBox(f->mesh_ptr[0]);
 907                         meshmanip->recalculateNormals(f->mesh_ptr[0], true, false);
 908                 }
 909
 910                 progress_callback(progress_callback_args, i, size);
 911         }
 912 #endif
 913 }
 914
 915
 916 #ifndef SERVER
 917 void CNodeDefManager::fillTileAttribs(ITextureSource *tsrc, TileSpec *tile,
 918                 TileDef *tiledef, u32 shader_id, bool use_normal_texture,
 919                 bool backface_culling, u8 alpha, u8 material_type)
 920 {
 921         tile->shader_id     = shader_id;
 922         tile->texture       = tsrc->getTextureForMesh(tiledef->name, &tile->texture_id);
 923         tile->alpha         = alpha;
 924         tile->material_type = material_type;
 925
 926         // Normal texture
 927         if (use_normal_texture)
 928                 tile->normal_texture = tsrc->getNormalTexture(tiledef->name);
 929
 930         // Material flags
 931         tile->material_flags = 0;
 932         if (backface_culling)
 933                 tile->material_flags |= MATERIAL_FLAG_BACKFACE_CULLING;
 934         if (tiledef->animation.type == TAT_VERTICAL_FRAMES)
 935                 tile->material_flags |= MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
 936
 937         // Animation parameters
 938         int frame_count = 1;
 939         if (tile->material_flags & MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES) {
 940                 // Get texture size to determine frame count by aspect ratio
 941                 v2u32 size = tile->texture->getOriginalSize();
 942                 int frame_height = (float)size.X /
 943                                 (float)tiledef->animation.aspect_w *
 944                                 (float)tiledef->animation.aspect_h;
 945                 frame_count = size.Y / frame_height;
 946                 int frame_length_ms = 1000.0 * tiledef->animation.length / frame_count;
 947                 tile->animation_frame_count = frame_count;
 948                 tile->animation_frame_length_ms = frame_length_ms;
 949         }
 950
 951         if (frame_count == 1) {
 952                 tile->material_flags &= ~MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
 953         } else {
 954                 std::ostringstream os(std::ios::binary);
 955                 tile->frames.resize(frame_count);
 956
 957                 for (int i = 0; i < frame_count; i++) {
 958
 959                         FrameSpec frame;
 960
 961                         os.str("");
 962                         os << tiledef->name << "^[verticalframe:"
 963                                 << frame_count << ":" << i;
 964
 965                         frame.texture = tsrc->getTextureForMesh(os.str(), &frame.texture_id);
 966                         if (tile->normal_texture)
 967                                 frame.normal_texture = tsrc->getNormalTexture(os.str());
 968                         tile->frames[i] = frame;
 969                 }
 970         }
 971 }
 972 #endif
 973
 974
 975 void CNodeDefManager::serialize(std::ostream &os, u16 protocol_version) const
 976 {
 977         writeU8(os, 1); // version
 978         u16 count = 0;
 979         std::ostringstream os2(std::ios::binary);
 980         for (u32 i = 0; i < m_content_features.size(); i++) {
 981                 if (i == CONTENT_IGNORE || i == CONTENT_AIR
 982                                 || i == CONTENT_UNKNOWN)
 983                         continue;
 984                 const ContentFeatures *f = &m_content_features[i];
 985                 if (f->name == "")
 986                         continue;
 987                 writeU16(os2, i);
 988                 // Wrap it in a string to allow different lengths without
 989                 // strict version incompatibilities
 990                 std::ostringstream wrapper_os(std::ios::binary);
 991                 f->serialize(wrapper_os, protocol_version);
 992                 os2<<serializeString(wrapper_os.str());
 993
 994                 // must not overflow
 995                 u16 next = count + 1;
 996                 FATAL_ERROR_IF(next < count, "Overflow");
 997                 count++;
 998         }
 999         writeU16(os, count);
1000         os << serializeLongString(os2.str());
1001 }
1002
1003
1004 void CNodeDefManager::deSerialize(std::istream &is)
1005 {
1006         clear();
1007         int version = readU8(is);
1008         if (version != 1)
1009                 throw SerializationError("unsupported NodeDefinitionManager version");
1010         u16 count = readU16(is);
1011         std::istringstream is2(deSerializeLongString(is), std::ios::binary);
1012         ContentFeatures f;
1013         for (u16 n = 0; n < count; n++) {
1014                 u16 i = readU16(is2);
1015
1016                 // Read it from the string wrapper
1017                 std::string wrapper = deSerializeString(is2);
1018                 std::istringstream wrapper_is(wrapper, std::ios::binary);
1019                 f.deSerialize(wrapper_is);
1020
1021                 // Check error conditions
1022                 if (i == CONTENT_IGNORE || i == CONTENT_AIR || i == CONTENT_UNKNOWN) {
1023                         infostream << "NodeDefManager::deSerialize(): WARNING: "
1024                                 "not changing builtin node " << i << std::endl;
1025                         continue;
1026                 }
1027                 if (f.name == "") {
1028                         infostream << "NodeDefManager::deSerialize(): WARNING: "
1029                                 "received empty name" << std::endl;
1030                         continue;
1031                 }
1032
1033                 // Ignore aliases
1034                 u16 existing_id;
1035                 if (m_name_id_mapping.getId(f.name, existing_id) && i != existing_id) {
1036                         infostream << "NodeDefManager::deSerialize(): WARNING: "
1037                                 "already defined with different ID: " << f.name << std::endl;
1038                         continue;
1039                 }
1040
1041                 // All is ok, add node definition with the requested ID
1042                 if (i >= m_content_features.size())
1043                         m_content_features.resize((u32)(i) + 1);
1044                 m_content_features[i] = f;
1045                 addNameIdMapping(i, f.name);
1046                 verbosestream << "deserialized " << f.name << std::endl;
1047         }
1048 }
1049
1050
1051 void CNodeDefManager::addNameIdMapping(content_t i, std::string name)
1052 {
1053         m_name_id_mapping.set(i, name);
1054         m_name_id_mapping_with_aliases.insert(std::make_pair(name, i));
1055 }
1056
1057
1058 IWritableNodeDefManager *createNodeDefManager()
1059 {
1060         return new CNodeDefManager();
1061 }
1062
1063
1064 //// Serialization of old ContentFeatures formats
1065 void ContentFeatures::serializeOld(std::ostream &os, u16 protocol_version) const
1066 {
1067         if (protocol_version == 13)
1068         {
1069                 writeU8(os, 5); // version
1070                 os<<serializeString(name);
1071                 writeU16(os, groups.size());
1072                 for (ItemGroupList::const_iterator
1073                                 i = groups.begin(); i != groups.end(); i++) {
1074                         os<<serializeString(i->first);
1075                         writeS16(os, i->second);
1076                 }
1077                 writeU8(os, drawtype);
1078                 writeF1000(os, visual_scale);
1079                 writeU8(os, 6);
1080                 for (u32 i = 0; i < 6; i++)
1081                         tiledef[i].serialize(os, protocol_version);
1082                 //CF_SPECIAL_COUNT = 2 before cf ver. 7 and protocol ver. 24
1083                 writeU8(os, 2);
1084                 for (u32 i = 0; i < 2; i++)
1085                         tiledef_special[i].serialize(os, protocol_version);
1086                 writeU8(os, alpha);
1087                 writeU8(os, post_effect_color.getAlpha());
1088                 writeU8(os, post_effect_color.getRed());
1089                 writeU8(os, post_effect_color.getGreen());
1090                 writeU8(os, post_effect_color.getBlue());
1091                 writeU8(os, param_type);
1092                 writeU8(os, param_type_2);
1093                 writeU8(os, is_ground_content);
1094                 writeU8(os, light_propagates);
1095                 writeU8(os, sunlight_propagates);
1096                 writeU8(os, walkable);
1097                 writeU8(os, pointable);
1098                 writeU8(os, diggable);
1099                 writeU8(os, climbable);
1100                 writeU8(os, buildable_to);
1101                 os<<serializeString(""); // legacy: used to be metadata_name
1102                 writeU8(os, liquid_type);
1103                 os<<serializeString(liquid_alternative_flowing);
1104                 os<<serializeString(liquid_alternative_source);
1105                 writeU8(os, liquid_viscosity);
1106                 writeU8(os, light_source);
1107                 writeU32(os, damage_per_second);
1108                 node_box.serialize(os, protocol_version);
1109                 selection_box.serialize(os, protocol_version);
1110                 writeU8(os, legacy_facedir_simple);
1111                 writeU8(os, legacy_wallmounted);
1112                 serializeSimpleSoundSpec(sound_footstep, os);
1113                 serializeSimpleSoundSpec(sound_dig, os);
1114                 serializeSimpleSoundSpec(sound_dug, os);
1115         }
1116         else if (protocol_version > 13 && protocol_version < 24) {
1117                 writeU8(os, 6); // version
1118                 os<<serializeString(name);
1119                 writeU16(os, groups.size());
1120                 for (ItemGroupList::const_iterator
1121                         i = groups.begin(); i != groups.end(); i++) {
1122                                 os<<serializeString(i->first);
1123                                 writeS16(os, i->second);
1124                 }
1125                 writeU8(os, drawtype);
1126                 writeF1000(os, visual_scale);
1127                 writeU8(os, 6);
1128                 for (u32 i = 0; i < 6; i++)
1129                         tiledef[i].serialize(os, protocol_version);
1130                 //CF_SPECIAL_COUNT = 2 before cf ver. 7 and protocol ver. 24
1131                 writeU8(os, 2);
1132                 for (u32 i = 0; i < 2; i++)
1133                         tiledef_special[i].serialize(os, protocol_version);
1134                 writeU8(os, alpha);
1135                 writeU8(os, post_effect_color.getAlpha());
1136                 writeU8(os, post_effect_color.getRed());
1137                 writeU8(os, post_effect_color.getGreen());
1138                 writeU8(os, post_effect_color.getBlue());
1139                 writeU8(os, param_type);
1140                 writeU8(os, param_type_2);
1141                 writeU8(os, is_ground_content);
1142                 writeU8(os, light_propagates);
1143                 writeU8(os, sunlight_propagates);
1144                 writeU8(os, walkable);
1145                 writeU8(os, pointable);
1146                 writeU8(os, diggable);
1147                 writeU8(os, climbable);
1148                 writeU8(os, buildable_to);
1149                 os<<serializeString(""); // legacy: used to be metadata_name
1150                 writeU8(os, liquid_type);
1151                 os<<serializeString(liquid_alternative_flowing);
1152                 os<<serializeString(liquid_alternative_source);
1153                 writeU8(os, liquid_viscosity);
1154                 writeU8(os, liquid_renewable);
1155                 writeU8(os, light_source);
1156                 writeU32(os, damage_per_second);
1157                 node_box.serialize(os, protocol_version);
1158                 selection_box.serialize(os, protocol_version);
1159                 writeU8(os, legacy_facedir_simple);
1160                 writeU8(os, legacy_wallmounted);
1161                 serializeSimpleSoundSpec(sound_footstep, os);
1162                 serializeSimpleSoundSpec(sound_dig, os);
1163                 serializeSimpleSoundSpec(sound_dug, os);
1164                 writeU8(os, rightclickable);
1165                 writeU8(os, drowning);
1166                 writeU8(os, leveled);
1167                 writeU8(os, liquid_range);
1168         } else
1169                 throw SerializationError("ContentFeatures::serialize(): "
1170                         "Unsupported version requested");
1171 }
1172
1173
1174 void ContentFeatures::deSerializeOld(std::istream &is, int version)
1175 {
1176         if (version == 5) // In PROTOCOL_VERSION 13
1177         {
1178                 name = deSerializeString(is);
1179                 groups.clear();
1180                 u32 groups_size = readU16(is);
1181                 for(u32 i=0; i<groups_size; i++){
1182                         std::string name = deSerializeString(is);
1183                         int value = readS16(is);
1184                         groups[name] = value;
1185                 }
1186                 drawtype = (enum NodeDrawType)readU8(is);
1187                 visual_scale = readF1000(is);
1188                 if (readU8(is) != 6)
1189                         throw SerializationError("unsupported tile count");
1190                 for (u32 i = 0; i < 6; i++)
1191                         tiledef[i].deSerialize(is);
1192                 if (readU8(is) != CF_SPECIAL_COUNT)
1193                         throw SerializationError("unsupported CF_SPECIAL_COUNT");
1194                 for (u32 i = 0; i < CF_SPECIAL_COUNT; i++)
1195                         tiledef_special[i].deSerialize(is);
1196                 alpha = readU8(is);
1197                 post_effect_color.setAlpha(readU8(is));
1198                 post_effect_color.setRed(readU8(is));
1199                 post_effect_color.setGreen(readU8(is));
1200                 post_effect_color.setBlue(readU8(is));
1201                 param_type = (enum ContentParamType)readU8(is);
1202                 param_type_2 = (enum ContentParamType2)readU8(is);
1203                 is_ground_content = readU8(is);
1204                 light_propagates = readU8(is);
1205                 sunlight_propagates = readU8(is);
1206                 walkable = readU8(is);
1207                 pointable = readU8(is);
1208                 diggable = readU8(is);
1209                 climbable = readU8(is);
1210                 buildable_to = readU8(is);
1211                 deSerializeString(is); // legacy: used to be metadata_name
1212                 liquid_type = (enum LiquidType)readU8(is);
1213                 liquid_alternative_flowing = deSerializeString(is);
1214                 liquid_alternative_source = deSerializeString(is);
1215                 liquid_viscosity = readU8(is);
1216                 light_source = readU8(is);
1217                 damage_per_second = readU32(is);
1218                 node_box.deSerialize(is);
1219                 selection_box.deSerialize(is);
1220                 legacy_facedir_simple = readU8(is);
1221                 legacy_wallmounted = readU8(is);
1222                 deSerializeSimpleSoundSpec(sound_footstep, is);
1223                 deSerializeSimpleSoundSpec(sound_dig, is);
1224                 deSerializeSimpleSoundSpec(sound_dug, is);
1225         } else if (version == 6) {
1226                 name = deSerializeString(is);
1227                 groups.clear();
1228                 u32 groups_size = readU16(is);
1229                 for (u32 i = 0; i < groups_size; i++) {
1230                         std::string name = deSerializeString(is);
1231                         int     value = readS16(is);
1232                         groups[name] = value;
1233                 }
1234                 drawtype = (enum NodeDrawType)readU8(is);
1235                 visual_scale = readF1000(is);
1236                 if (readU8(is) != 6)
1237                         throw SerializationError("unsupported tile count");
1238                 for (u32 i = 0; i < 6; i++)
1239                         tiledef[i].deSerialize(is);
1240                 // CF_SPECIAL_COUNT in version 6 = 2
1241                 if (readU8(is) != 2)
1242                         throw SerializationError("unsupported CF_SPECIAL_COUNT");
1243                 for (u32 i = 0; i < 2; i++)
1244                         tiledef_special[i].deSerialize(is);
1245                 alpha = readU8(is);
1246                 post_effect_color.setAlpha(readU8(is));
1247                 post_effect_color.setRed(readU8(is));
1248                 post_effect_color.setGreen(readU8(is));
1249                 post_effect_color.setBlue(readU8(is));
1250                 param_type = (enum ContentParamType)readU8(is);
1251                 param_type_2 = (enum ContentParamType2)readU8(is);
1252                 is_ground_content = readU8(is);
1253                 light_propagates = readU8(is);
1254                 sunlight_propagates = readU8(is);
1255                 walkable = readU8(is);
1256                 pointable = readU8(is);
1257                 diggable = readU8(is);
1258                 climbable = readU8(is);
1259                 buildable_to = readU8(is);
1260                 deSerializeString(is); // legacy: used to be metadata_name
1261                 liquid_type = (enum LiquidType)readU8(is);
1262                 liquid_alternative_flowing = deSerializeString(is);
1263                 liquid_alternative_source = deSerializeString(is);
1264                 liquid_viscosity = readU8(is);
1265                 liquid_renewable = readU8(is);
1266                 light_source = readU8(is);
1267                 damage_per_second = readU32(is);
1268                 node_box.deSerialize(is);
1269                 selection_box.deSerialize(is);
1270                 legacy_facedir_simple = readU8(is);
1271                 legacy_wallmounted = readU8(is);
1272                 deSerializeSimpleSoundSpec(sound_footstep, is);
1273                 deSerializeSimpleSoundSpec(sound_dig, is);
1274                 deSerializeSimpleSoundSpec(sound_dug, is);
1275                 rightclickable = readU8(is);
1276                 drowning = readU8(is);
1277                 leveled = readU8(is);
1278                 liquid_range = readU8(is);
1279         } else {
1280                 throw SerializationError("unsupported ContentFeatures version");
1281         }
1282 }
1283
1284
1285 inline bool CNodeDefManager::getNodeRegistrationStatus() const
1286 {
1287         return m_node_registration_complete;
1288 }
1289
1290
1291 inline void CNodeDefManager::setNodeRegistrationStatus(bool completed)
1292 {
1293         m_node_registration_complete = completed;
1294 }
1295
1296
1297 void CNodeDefManager::pendNodeResolve(NodeResolver *nr, NodeResolveMethod how)
1298 {
1299         nr->m_ndef = this;
1300
1301         switch (how) {
1302         case NODE_RESOLVE_NONE:
1303                 break;
1304         case NODE_RESOLVE_DIRECT:
1305                 nr->nodeResolveInternal();
1306                 break;
1307         case NODE_RESOLVE_DEFERRED:
1308                 if (m_node_registration_complete)
1309                         nr->nodeResolveInternal();
1310                 else
1311                         m_pending_resolve_callbacks.push_back(nr);
1312                 break;
1313         }
1314 }
1315
1316
1317 bool CNodeDefManager::cancelNodeResolveCallback(NodeResolver *nr)
1318 {
1319         size_t len = m_pending_resolve_callbacks.size();
1320         for (size_t i = 0; i != len; i++) {
1321                 if (nr != m_pending_resolve_callbacks[i])
1322                         continue;
1323
1324                 len--;
1325                 m_pending_resolve_callbacks[i] = m_pending_resolve_callbacks[len];
1326                 m_pending_resolve_callbacks.resize(len);
1327                 return true;
1328         }
1329
1330         return false;
1331 }
1332
1333
1334 void CNodeDefManager::runNodeResolveCallbacks()
1335 {
1336         for (size_t i = 0; i != m_pending_resolve_callbacks.size(); i++) {
1337                 NodeResolver *nr = m_pending_resolve_callbacks[i];
1338                 nr->nodeResolveInternal();
1339         }
1340
1341         m_pending_resolve_callbacks.clear();
1342 }
1343
1344
1345 void CNodeDefManager::resetNodeResolveState()
1346 {
1347         m_node_registration_complete = false;
1348         m_pending_resolve_callbacks.clear();
1349 }
1350
1351
1352 ////
1353 //// NodeResolver
1354 ////
1355
1356 NodeResolver::NodeResolver()
1357 {
1358         m_ndef            = NULL;
1359         m_nodenames_idx   = 0;
1360         m_nnlistsizes_idx = 0;
1361         m_resolve_done    = false;
1362
1363         m_nodenames.reserve(16);
1364         m_nnlistsizes.reserve(4);
1365 }
1366
1367
1368 NodeResolver::~NodeResolver()
1369 {
1370         if (!m_resolve_done && m_ndef)
1371                 m_ndef->cancelNodeResolveCallback(this);
1372 }
1373
1374
1375 void NodeResolver::nodeResolveInternal()
1376 {
1377         m_nodenames_idx   = 0;
1378         m_nnlistsizes_idx = 0;
1379
1380         resolveNodeNames();
1381         m_resolve_done = true;
1382
1383         m_nodenames.clear();
1384         m_nnlistsizes.clear();
1385 }
1386
1387
1388 const std::string &NodeResolver::getNodeName(content_t c) const
1389 {
1390         if (c < m_nodenames.size())
1391                 return m_nodenames[c];
1392
1393         if (m_ndef)
1394                 return m_ndef->get(c).name;
1395
1396         static const std::string unknown_str("unknown");
1397         return unknown_str;
1398 }
1399
1400
1401 bool NodeResolver::getIdFromNrBacklog(content_t *result_out,
1402         const std::string &node_alt, content_t c_fallback)
1403 {
1404         if (m_nodenames_idx == m_nodenames.size()) {
1405                 *result_out = c_fallback;
1406                 errorstream << "NodeResolver: no more nodes in list" << std::endl;
1407                 return false;
1408         }
1409
1410         content_t c;
1411         std::string name = m_nodenames[m_nodenames_idx++];
1412
1413         bool success = m_ndef->getId(name, c);
1414         if (!success && node_alt != "") {
1415                 name = node_alt;
1416                 success = m_ndef->getId(name, c);
1417         }
1418
1419         if (!success) {
1420                 errorstream << "NodeResolver: failed to resolve node name '" << name
1421                         << "'." << std::endl;
1422                 c = c_fallback;
1423         }
1424
1425         *result_out = c;
1426         return success;
1427 }
1428
1429
1430 bool NodeResolver::getIdsFromNrBacklog(std::vector<content_t> *result_out,
1431         bool all_required, content_t c_fallback)
1432 {
1433         bool success = true;
1434
1435         if (m_nnlistsizes_idx == m_nnlistsizes.size()) {
1436                 errorstream << "NodeResolver: no more node lists" << std::endl;
1437                 return false;
1438         }
1439
1440         size_t length = m_nnlistsizes[m_nnlistsizes_idx++];
1441
1442         while (length--) {
1443                 if (m_nodenames_idx == m_nodenames.size()) {
1444                         errorstream << "NodeResolver: no more nodes in list" << std::endl;
1445                         return false;
1446                 }
1447
1448                 content_t c;
1449                 std::string &name = m_nodenames[m_nodenames_idx++];
1450
1451                 if (name.substr(0,6) != "group:") {
1452                         if (m_ndef->getId(name, c)) {
1453                                 result_out->push_back(c);
1454                         } else if (all_required) {
1455                                 errorstream << "NodeResolver: failed to resolve node name '"
1456                                         << name << "'." << std::endl;
1457                                 result_out->push_back(c_fallback);
1458                                 success = false;
1459                         }
1460                 } else {
1461                         std::set<content_t> cids;
1462                         std::set<content_t>::iterator it;
1463                         m_ndef->getIds(name, cids);
1464                         for (it = cids.begin(); it != cids.end(); ++it)
1465                                 result_out->push_back(*it);
1466                 }
1467         }
1468
1469         return success;
1470 }