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 #endif
  27 #include "log.h"
  28 #include "settings.h"
  29 #include "nameidmapping.h"
  30 #include "util/numeric.h"
  31 #include "util/serialize.h"
  32 //#include "profiler.h" // For TimeTaker
  33
  34 /*
  35         NodeBox
  36 */
  37
  38 void NodeBox::reset()
  39 {
  40         type = NODEBOX_REGULAR;
  41         // default is empty
  42         fixed.clear();
  43         // default is sign/ladder-like
  44         wall_top = aabb3f(-BS/2, BS/2-BS/16., -BS/2, BS/2, BS/2, BS/2);
  45         wall_bottom = aabb3f(-BS/2, -BS/2, -BS/2, BS/2, -BS/2+BS/16., BS/2);
  46         wall_side = aabb3f(-BS/2, -BS/2, -BS/2, -BS/2+BS/16., BS/2, BS/2);
  47 }
  48
  49 void NodeBox::serialize(std::ostream &os, u16 protocol_version) const
  50 {
  51         int version = protocol_version >= 21 ? 2 : 1;
  52         writeU8(os, version);
  53
  54         if (version == 1 && type == NODEBOX_LEVELED)
  55                 writeU8(os, NODEBOX_FIXED);
  56         else
  57                 writeU8(os, type);
  58
  59         if(type == NODEBOX_FIXED || type == NODEBOX_LEVELED)
  60         {
  61                 writeU16(os, fixed.size());
  62                 for(std::vector<aabb3f>::const_iterator
  63                                 i = fixed.begin();
  64                                 i != fixed.end(); i++)
  65                 {
  66                         writeV3F1000(os, i->MinEdge);
  67                         writeV3F1000(os, i->MaxEdge);
  68                 }
  69         }
  70         else if(type == NODEBOX_WALLMOUNTED)
  71         {
  72                 writeV3F1000(os, wall_top.MinEdge);
  73                 writeV3F1000(os, wall_top.MaxEdge);
  74                 writeV3F1000(os, wall_bottom.MinEdge);
  75                 writeV3F1000(os, wall_bottom.MaxEdge);
  76                 writeV3F1000(os, wall_side.MinEdge);
  77                 writeV3F1000(os, wall_side.MaxEdge);
  78         }
  79 }
  80
  81 void NodeBox::deSerialize(std::istream &is)
  82 {
  83         int version = readU8(is);
  84         if(version < 1 || version > 2)
  85                 throw SerializationError("unsupported NodeBox version");
  86
  87         reset();
  88
  89         type = (enum NodeBoxType)readU8(is);
  90
  91         if(type == NODEBOX_FIXED || type == NODEBOX_LEVELED)
  92         {
  93                 u16 fixed_count = readU16(is);
  94                 while(fixed_count--)
  95                 {
  96                         aabb3f box;
  97                         box.MinEdge = readV3F1000(is);
  98                         box.MaxEdge = readV3F1000(is);
  99                         fixed.push_back(box);
 100                 }
 101         }
 102         else if(type == NODEBOX_WALLMOUNTED)
 103         {
 104                 wall_top.MinEdge = readV3F1000(is);
 105                 wall_top.MaxEdge = readV3F1000(is);
 106                 wall_bottom.MinEdge = readV3F1000(is);
 107                 wall_bottom.MaxEdge = readV3F1000(is);
 108                 wall_side.MinEdge = readV3F1000(is);
 109                 wall_side.MaxEdge = readV3F1000(is);
 110         }
 111 }
 112
 113 /*
 114         TileDef
 115 */
 116
 117 void TileDef::serialize(std::ostream &os, u16 protocol_version) const
 118 {
 119         if(protocol_version >= 17)
 120                 writeU8(os, 1);
 121         else
 122                 writeU8(os, 0);
 123         os<<serializeString(name);
 124         writeU8(os, animation.type);
 125         writeU16(os, animation.aspect_w);
 126         writeU16(os, animation.aspect_h);
 127         writeF1000(os, animation.length);
 128         if(protocol_version >= 17)
 129                 writeU8(os, backface_culling);
 130 }
 131
 132 void TileDef::deSerialize(std::istream &is)
 133 {
 134         int version = readU8(is);
 135         name = deSerializeString(is);
 136         animation.type = (TileAnimationType)readU8(is);
 137         animation.aspect_w = readU16(is);
 138         animation.aspect_h = readU16(is);
 139         animation.length = readF1000(is);
 140         if(version >= 1)
 141                 backface_culling = readU8(is);
 142 }
 143
 144 /*
 145         SimpleSoundSpec serialization
 146 */
 147
 148 static void serializeSimpleSoundSpec(const SimpleSoundSpec &ss,
 149                 std::ostream &os)
 150 {
 151         os<<serializeString(ss.name);
 152         writeF1000(os, ss.gain);
 153 }
 154 static void deSerializeSimpleSoundSpec(SimpleSoundSpec &ss, std::istream &is)
 155 {
 156         ss.name = deSerializeString(is);
 157         ss.gain = readF1000(is);
 158 }
 159
 160 /*
 161         ContentFeatures
 162 */
 163
 164 ContentFeatures::ContentFeatures()
 165 {
 166         reset();
 167 }
 168
 169 ContentFeatures::~ContentFeatures()
 170 {
 171 }
 172
 173 void ContentFeatures::reset()
 174 {
 175         /*
 176                 Cached stuff
 177         */
 178 #ifndef SERVER
 179         solidness = 2;
 180         visual_solidness = 0;
 181         backface_culling = true;
 182 #endif
 183         has_on_construct = false;
 184         has_on_destruct = false;
 185         has_after_destruct = false;
 186         /*
 187                 Actual data
 188
 189                 NOTE: Most of this is always overridden by the default values given
 190                       in builtin.lua
 191         */
 192         name = "";
 193         groups.clear();
 194         // Unknown nodes can be dug
 195         groups["dig_immediate"] = 2;
 196         drawtype = NDT_NORMAL;
 197         visual_scale = 1.0;
 198         for(u32 i=0; i<6; i++)
 199                 tiledef[i] = TileDef();
 200         for(u16 j=0; j<CF_SPECIAL_COUNT; j++)
 201                 tiledef_special[j] = TileDef();
 202         alpha = 255;
 203         post_effect_color = video::SColor(0, 0, 0, 0);
 204         param_type = CPT_NONE;
 205         param_type_2 = CPT2_NONE;
 206         is_ground_content = false;
 207         light_propagates = false;
 208         sunlight_propagates = false;
 209         walkable = true;
 210         pointable = true;
 211         diggable = true;
 212         climbable = false;
 213         buildable_to = false;
 214         rightclickable = true;
 215         leveled = 0;
 216         liquid_type = LIQUID_NONE;
 217         liquid_alternative_flowing = "";
 218         liquid_alternative_source = "";
 219         liquid_viscosity = 0;
 220         liquid_renewable = true;
 221         freezemelt = "";
 222         liquid_range = LIQUID_LEVEL_MAX+1;
 223         drowning = 0;
 224         light_source = 0;
 225         damage_per_second = 0;
 226         node_box = NodeBox();
 227         selection_box = NodeBox();
 228         legacy_facedir_simple = false;
 229         legacy_wallmounted = false;
 230         sound_footstep = SimpleSoundSpec();
 231         sound_dig = SimpleSoundSpec("__group");
 232         sound_dug = SimpleSoundSpec();
 233 }
 234
 235 void ContentFeatures::serialize(std::ostream &os, u16 protocol_version)
 236 {
 237         if(protocol_version < 14){
 238                 serializeOld(os, protocol_version);
 239                 return;
 240         }
 241
 242         writeU8(os, 6); // version
 243         os<<serializeString(name);
 244         writeU16(os, groups.size());
 245         for(ItemGroupList::const_iterator
 246                         i = groups.begin(); i != groups.end(); i++){
 247                 os<<serializeString(i->first);
 248                 writeS16(os, i->second);
 249         }
 250         writeU8(os, drawtype);
 251         writeF1000(os, visual_scale);
 252         writeU8(os, 6);
 253         for(u32 i=0; i<6; i++)
 254                 tiledef[i].serialize(os, protocol_version);
 255         writeU8(os, CF_SPECIAL_COUNT);
 256         for(u32 i=0; i<CF_SPECIAL_COUNT; i++){
 257                 tiledef_special[i].serialize(os, protocol_version);
 258         }
 259         writeU8(os, alpha);
 260         writeU8(os, post_effect_color.getAlpha());
 261         writeU8(os, post_effect_color.getRed());
 262         writeU8(os, post_effect_color.getGreen());
 263         writeU8(os, post_effect_color.getBlue());
 264         writeU8(os, param_type);
 265         writeU8(os, param_type_2);
 266         writeU8(os, is_ground_content);
 267         writeU8(os, light_propagates);
 268         writeU8(os, sunlight_propagates);
 269         writeU8(os, walkable);
 270         writeU8(os, pointable);
 271         writeU8(os, diggable);
 272         writeU8(os, climbable);
 273         writeU8(os, buildable_to);
 274         os<<serializeString(""); // legacy: used to be metadata_name
 275         writeU8(os, liquid_type);
 276         os<<serializeString(liquid_alternative_flowing);
 277         os<<serializeString(liquid_alternative_source);
 278         writeU8(os, liquid_viscosity);
 279         writeU8(os, liquid_renewable);
 280         writeU8(os, light_source);
 281         writeU32(os, damage_per_second);
 282         node_box.serialize(os, protocol_version);
 283         selection_box.serialize(os, protocol_version);
 284         writeU8(os, legacy_facedir_simple);
 285         writeU8(os, legacy_wallmounted);
 286         serializeSimpleSoundSpec(sound_footstep, os);
 287         serializeSimpleSoundSpec(sound_dig, os);
 288         serializeSimpleSoundSpec(sound_dug, os);
 289         writeU8(os, rightclickable);
 290         writeU8(os, drowning);
 291         writeU8(os, leveled);
 292         writeU8(os, liquid_range);
 293         // Stuff below should be moved to correct place in a version that otherwise changes
 294         // the protocol version
 295 }
 296
 297 void ContentFeatures::deSerialize(std::istream &is)
 298 {
 299         int version = readU8(is);
 300         if(version != 6){
 301                 deSerializeOld(is, version);
 302                 return;
 303         }
 304
 305         name = deSerializeString(is);
 306         groups.clear();
 307         u32 groups_size = readU16(is);
 308         for(u32 i=0; i<groups_size; i++){
 309                 std::string name = deSerializeString(is);
 310                 int value = readS16(is);
 311                 groups[name] = value;
 312         }
 313         drawtype = (enum NodeDrawType)readU8(is);
 314         visual_scale = readF1000(is);
 315         if(readU8(is) != 6)
 316                 throw SerializationError("unsupported tile count");
 317         for(u32 i=0; i<6; i++)
 318                 tiledef[i].deSerialize(is);
 319         if(readU8(is) != CF_SPECIAL_COUNT)
 320                 throw SerializationError("unsupported CF_SPECIAL_COUNT");
 321         for(u32 i=0; i<CF_SPECIAL_COUNT; i++)
 322                 tiledef_special[i].deSerialize(is);
 323         alpha = readU8(is);
 324         post_effect_color.setAlpha(readU8(is));
 325         post_effect_color.setRed(readU8(is));
 326         post_effect_color.setGreen(readU8(is));
 327         post_effect_color.setBlue(readU8(is));
 328         param_type = (enum ContentParamType)readU8(is);
 329         param_type_2 = (enum ContentParamType2)readU8(is);
 330         is_ground_content = readU8(is);
 331         light_propagates = readU8(is);
 332         sunlight_propagates = readU8(is);
 333         walkable = readU8(is);
 334         pointable = readU8(is);
 335         diggable = readU8(is);
 336         climbable = readU8(is);
 337         buildable_to = readU8(is);
 338         deSerializeString(is); // legacy: used to be metadata_name
 339         liquid_type = (enum LiquidType)readU8(is);
 340         liquid_alternative_flowing = deSerializeString(is);
 341         liquid_alternative_source = deSerializeString(is);
 342         liquid_viscosity = readU8(is);
 343         liquid_renewable = readU8(is);
 344         light_source = readU8(is);
 345         damage_per_second = readU32(is);
 346         node_box.deSerialize(is);
 347         selection_box.deSerialize(is);
 348         legacy_facedir_simple = readU8(is);
 349         legacy_wallmounted = readU8(is);
 350         deSerializeSimpleSoundSpec(sound_footstep, is);
 351         deSerializeSimpleSoundSpec(sound_dig, is);
 352         deSerializeSimpleSoundSpec(sound_dug, is);
 353         rightclickable = readU8(is);
 354         drowning = readU8(is);
 355         leveled = readU8(is);
 356         liquid_range = readU8(is);
 357         // If you add anything here, insert it primarily inside the try-catch
 358         // block to not need to increase the version.
 359         try{
 360                 // Stuff below should be moved to correct place in a version that
 361                 // otherwise changes the protocol version
 362         }catch(SerializationError &e) {};
 363 }
 364
 365 /*
 366         CNodeDefManager
 367 */
 368
 369 class CNodeDefManager: public IWritableNodeDefManager
 370 {
 371 public:
 372         void clear()
 373         {
 374                 m_content_features.clear();
 375                 m_name_id_mapping.clear();
 376                 m_name_id_mapping_with_aliases.clear();
 377                 m_group_to_items.clear();
 378                 m_next_id = 0;
 379
 380                 u32 initial_length = 0;
 381                 initial_length = MYMAX(initial_length, CONTENT_UNKNOWN + 1);
 382                 initial_length = MYMAX(initial_length, CONTENT_AIR + 1);
 383                 initial_length = MYMAX(initial_length, CONTENT_IGNORE + 1);
 384                 m_content_features.resize(initial_length);
 385
 386                 // Set CONTENT_UNKNOWN
 387                 {
 388                         ContentFeatures f;
 389                         f.name = "unknown";
 390                         // Insert directly into containers
 391                         content_t c = CONTENT_UNKNOWN;
 392                         m_content_features[c] = f;
 393                         addNameIdMapping(c, f.name);
 394                 }
 395
 396                 // Set CONTENT_AIR
 397                 {
 398                         ContentFeatures f;
 399                         f.name = "air";
 400                         f.drawtype = NDT_AIRLIKE;
 401                         f.param_type = CPT_LIGHT;
 402                         f.light_propagates = true;
 403                         f.sunlight_propagates = true;
 404                         f.walkable = false;
 405                         f.pointable = false;
 406                         f.diggable = false;
 407                         f.buildable_to = true;
 408                         // Insert directly into containers
 409                         content_t c = CONTENT_AIR;
 410                         m_content_features[c] = f;
 411                         addNameIdMapping(c, f.name);
 412                 }
 413
 414                 // Set CONTENT_IGNORE
 415                 {
 416                         ContentFeatures f;
 417                         f.name = "ignore";
 418                         f.drawtype = NDT_AIRLIKE;
 419                         f.param_type = CPT_NONE;
 420                         f.light_propagates = false;
 421                         f.sunlight_propagates = false;
 422                         f.walkable = false;
 423                         f.pointable = false;
 424                         f.diggable = false;
 425                         // A way to remove accidental CONTENT_IGNOREs
 426                         f.buildable_to = true;
 427                         // Insert directly into containers
 428                         content_t c = CONTENT_IGNORE;
 429                         m_content_features[c] = f;
 430                         addNameIdMapping(c, f.name);
 431                 }
 432         }
 433         CNodeDefManager()
 434         {
 435                 clear();
 436         }
 437         virtual ~CNodeDefManager()
 438         {
 439         }
 440         virtual IWritableNodeDefManager* clone()
 441         {
 442                 CNodeDefManager *mgr = new CNodeDefManager();
 443                 *mgr = *this;
 444                 return mgr;
 445         }
 446         virtual const ContentFeatures& get(content_t c) const
 447         {
 448                 if(c < m_content_features.size())
 449                         return m_content_features[c];
 450                 else
 451                         return m_content_features[CONTENT_UNKNOWN];
 452         }
 453         virtual const ContentFeatures& get(const MapNode &n) const
 454         {
 455                 return get(n.getContent());
 456         }
 457         virtual bool getId(const std::string &name, content_t &result) const
 458         {
 459                 std::map<std::string, content_t>::const_iterator
 460                         i = m_name_id_mapping_with_aliases.find(name);
 461                 if(i == m_name_id_mapping_with_aliases.end())
 462                         return false;
 463                 result = i->second;
 464                 return true;
 465         }
 466         virtual content_t getId(const std::string &name) const
 467         {
 468                 content_t id = CONTENT_IGNORE;
 469                 getId(name, id);
 470                 return id;
 471         }
 472         virtual void getIds(const std::string &name, std::set<content_t> &result)
 473                         const
 474         {
 475                 //TimeTaker t("getIds", NULL, PRECISION_MICRO);
 476                 if(name.substr(0,6) != "group:"){
 477                         content_t id = CONTENT_IGNORE;
 478                         if(getId(name, id))
 479                                 result.insert(id);
 480                         return;
 481                 }
 482                 std::string group = name.substr(6);
 483
 484                 std::map<std::string, GroupItems>::const_iterator
 485                         i = m_group_to_items.find(group);
 486                 if (i == m_group_to_items.end())
 487                         return;
 488
 489                 const GroupItems &items = i->second;
 490                 for (GroupItems::const_iterator j = items.begin();
 491                         j != items.end(); ++j) {
 492                         if ((*j).second != 0)
 493                                 result.insert((*j).first);
 494                 }
 495                 //printf("getIds: %dus\n", t.stop());
 496         }
 497         virtual const ContentFeatures& get(const std::string &name) const
 498         {
 499                 content_t id = CONTENT_UNKNOWN;
 500                 getId(name, id);
 501                 return get(id);
 502         }
 503         // returns CONTENT_IGNORE if no free ID found
 504         content_t allocateId()
 505         {
 506                 for(content_t id = m_next_id;
 507                                 id >= m_next_id; // overflow?
 508                                 ++id){
 509                         while(id >= m_content_features.size()){
 510                                 m_content_features.push_back(ContentFeatures());
 511                         }
 512                         const ContentFeatures &f = m_content_features[id];
 513                         if(f.name == ""){
 514                                 m_next_id = id + 1;
 515                                 return id;
 516                         }
 517                 }
 518                 // If we arrive here, an overflow occurred in id.
 519                 // That means no ID was found
 520                 return CONTENT_IGNORE;
 521         }
 522         // IWritableNodeDefManager
 523         virtual content_t set(const std::string &name,
 524                         const ContentFeatures &def)
 525         {
 526                 assert(name != "");
 527                 assert(name == def.name);
 528
 529                 // Don't allow redefining ignore (but allow air and unknown)
 530                 if(name == "ignore"){
 531                         infostream<<"NodeDefManager: WARNING: Ignoring "
 532                                         <<"CONTENT_IGNORE redefinition"<<std::endl;
 533                         return CONTENT_IGNORE;
 534                 }
 535
 536                 content_t id = CONTENT_IGNORE;
 537                 bool found = m_name_id_mapping.getId(name, id);  // ignore aliases
 538                 if(!found){
 539                         // Get new id
 540                         id = allocateId();
 541                         if(id == CONTENT_IGNORE){
 542                                 infostream<<"NodeDefManager: WARNING: Absolute "
 543                                                 <<"limit reached"<<std::endl;
 544                                 return CONTENT_IGNORE;
 545                         }
 546                         assert(id != CONTENT_IGNORE);
 547                         addNameIdMapping(id, name);
 548                 }
 549                 m_content_features[id] = def;
 550                 verbosestream<<"NodeDefManager: registering content id \""<<id
 551                                 <<"\": name=\""<<def.name<<"\""<<std::endl;
 552
 553                 // Add this content to the list of all groups it belongs to
 554                 // FIXME: This should remove a node from groups it no longer
 555                 // belongs to when a node is re-registered
 556                 for (ItemGroupList::const_iterator i = def.groups.begin();
 557                         i != def.groups.end(); ++i) {
 558                         std::string group_name = i->first;
 559
 560                         std::map<std::string, GroupItems>::iterator
 561                                 j = m_group_to_items.find(group_name);
 562                         if (j == m_group_to_items.end()) {
 563                                 m_group_to_items[group_name].push_back(
 564                                                 std::make_pair(id, i->second));
 565                         } else {
 566                                 GroupItems &items = j->second;
 567                                 items.push_back(std::make_pair(id, i->second));
 568                         }
 569                 }
 570                 return id;
 571         }
 572         virtual content_t allocateDummy(const std::string &name)
 573         {
 574                 assert(name != "");
 575                 ContentFeatures f;
 576                 f.name = name;
 577                 return set(name, f);
 578         }
 579         virtual void updateAliases(IItemDefManager *idef)
 580         {
 581                 std::set<std::string> all = idef->getAll();
 582                 m_name_id_mapping_with_aliases.clear();
 583                 for(std::set<std::string>::iterator
 584                                 i = all.begin(); i != all.end(); i++)
 585                 {
 586                         std::string name = *i;
 587                         std::string convert_to = idef->getAlias(name);
 588                         content_t id;
 589                         if(m_name_id_mapping.getId(convert_to, id))
 590                         {
 591                                 m_name_id_mapping_with_aliases.insert(
 592                                                 std::make_pair(name, id));
 593                         }
 594                 }
 595         }
 596         virtual void updateTextures(ITextureSource *tsrc)
 597         {
 598 #ifndef SERVER
 599                 infostream<<"CNodeDefManager::updateTextures(): Updating "
 600                                 <<"textures in node definitions"<<std::endl;
 601
 602                 bool new_style_water = g_settings->getBool("new_style_water");
 603                 bool new_style_leaves = g_settings->getBool("new_style_leaves");
 604                 bool opaque_water = g_settings->getBool("opaque_water");
 605
 606                 for(u32 i=0; i<m_content_features.size(); i++)
 607                 {
 608                         ContentFeatures *f = &m_content_features[i];
 609
 610                         // Figure out the actual tiles to use
 611                         TileDef tiledef[6];
 612                         for(u32 j=0; j<6; j++)
 613                         {
 614                                 tiledef[j] = f->tiledef[j];
 615                                 if(tiledef[j].name == "")
 616                                         tiledef[j].name = "unknown_node.png";
 617                         }
 618
 619                         bool is_liquid = false;
 620                         switch(f->drawtype){
 621                         default:
 622                         case NDT_NORMAL:
 623                                 f->solidness = 2;
 624                                 break;
 625                         case NDT_AIRLIKE:
 626                                 f->solidness = 0;
 627                                 break;
 628                         case NDT_LIQUID:
 629                                 assert(f->liquid_type == LIQUID_SOURCE);
 630                                 if(opaque_water)
 631                                         f->alpha = 255;
 632                                 if(new_style_water){
 633                                         f->solidness = 0;
 634                                 } else {
 635                                         f->solidness = 1;
 636                                         f->backface_culling = false;
 637                                 }
 638                                 is_liquid = true;
 639                                 break;
 640                         case NDT_FLOWINGLIQUID:
 641                                 assert(f->liquid_type == LIQUID_FLOWING);
 642                                 f->solidness = 0;
 643                                 if(opaque_water)
 644                                         f->alpha = 255;
 645                                 is_liquid = true;
 646                                 break;
 647                         case NDT_GLASSLIKE:
 648                                 f->solidness = 0;
 649                                 f->visual_solidness = 1;
 650                                 break;
 651                         case NDT_GLASSLIKE_FRAMED:
 652                                 f->solidness = 0;
 653                                 f->visual_solidness = 1;
 654                                 break;
 655                         case NDT_ALLFACES:
 656                                 f->solidness = 0;
 657                                 f->visual_solidness = 1;
 658                                 break;
 659                         case NDT_ALLFACES_OPTIONAL:
 660                                 if(new_style_leaves){
 661                                         f->drawtype = NDT_ALLFACES;
 662                                         f->solidness = 0;
 663                                         f->visual_solidness = 1;
 664                                 } else {
 665                                         f->drawtype = NDT_NORMAL;
 666                                         f->solidness = 2;
 667                                         for(u32 i=0; i<6; i++){
 668                                                 tiledef[i].name += std::string("^[noalpha");
 669                                         }
 670                                 }
 671                                 break;
 672                         case NDT_PLANTLIKE:
 673                                 f->solidness = 0;
 674                                 f->backface_culling = false;
 675                                 break;
 676                         case NDT_TORCHLIKE:
 677                         case NDT_SIGNLIKE:
 678                         case NDT_FENCELIKE:
 679                         case NDT_RAILLIKE:
 680                         case NDT_NODEBOX:
 681                                 f->solidness = 0;
 682                                 break;
 683                         }
 684
 685                         u8 material_type;
 686                         if (is_liquid)
 687                                 material_type = (f->alpha == 255) ? TILE_MATERIAL_LIQUID_OPAQUE : TILE_MATERIAL_LIQUID_TRANSPARENT;
 688                         else
 689                                 material_type = (f->alpha == 255) ? TILE_MATERIAL_BASIC : TILE_MATERIAL_ALPHA;
 690
 691                         // Tiles (fill in f->tiles[])
 692                         for(u16 j=0; j<6; j++){
 693                                 // Texture
 694                                 f->tiles[j].texture = tsrc->getTexture(
 695                                                 tiledef[j].name,
 696                                                 &f->tiles[j].texture_id);
 697                                 // Alpha
 698                                 f->tiles[j].alpha = f->alpha;
 699                                 // Material type
 700                                 f->tiles[j].material_type = material_type;
 701                                 // Material flags
 702                                 f->tiles[j].material_flags = 0;
 703                                 if(f->backface_culling)
 704                                         f->tiles[j].material_flags |= MATERIAL_FLAG_BACKFACE_CULLING;
 705                                 if(tiledef[j].animation.type == TAT_VERTICAL_FRAMES)
 706                                         f->tiles[j].material_flags |= MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
 707                                 // Animation parameters
 708                                 if(f->tiles[j].material_flags &
 709                                                 MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES)
 710                                 {
 711                                         // Get texture size to determine frame count by
 712                                         // aspect ratio
 713                                         v2u32 size = f->tiles[j].texture->getOriginalSize();
 714                                         int frame_height = (float)size.X /
 715                                                         (float)tiledef[j].animation.aspect_w *
 716                                                         (float)tiledef[j].animation.aspect_h;
 717                                         int frame_count = size.Y / frame_height;
 718                                         int frame_length_ms = 1000.0 *
 719                                                         tiledef[j].animation.length / frame_count;
 720                                         f->tiles[j].animation_frame_count = frame_count;
 721                                         f->tiles[j].animation_frame_length_ms = frame_length_ms;
 722
 723                                         // If there are no frames for an animation, switch
 724                                         // animation off (so that having specified an animation
 725                                         // for something but not using it in the texture pack
 726                                         // gives no overhead)
 727                                         if(frame_count == 1){
 728                                                 f->tiles[j].material_flags &=
 729                                                                 ~MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
 730                                         }
 731                                 }
 732                         }
 733                         // Special tiles (fill in f->special_tiles[])
 734                         for(u16 j=0; j<CF_SPECIAL_COUNT; j++){
 735                                 // Texture
 736                                 f->special_tiles[j].texture = tsrc->getTexture(
 737                                                 f->tiledef_special[j].name,
 738                                                 &f->special_tiles[j].texture_id);
 739                                 // Alpha
 740                                 f->special_tiles[j].alpha = f->alpha;
 741                                 // Material type
 742                                 f->special_tiles[j].material_type = material_type;
 743                                 // Material flags
 744                                 f->special_tiles[j].material_flags = 0;
 745                                 if(f->tiledef_special[j].backface_culling)
 746                                         f->special_tiles[j].material_flags |= MATERIAL_FLAG_BACKFACE_CULLING;
 747                                 if(f->tiledef_special[j].animation.type == TAT_VERTICAL_FRAMES)
 748                                         f->special_tiles[j].material_flags |= MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
 749                                 // Animation parameters
 750                                 if(f->special_tiles[j].material_flags &
 751                                                 MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES)
 752                                 {
 753                                         // Get texture size to determine frame count by
 754                                         // aspect ratio
 755                                         v2u32 size = f->special_tiles[j].texture->getOriginalSize();
 756                                         int frame_height = (float)size.X /
 757                                                         (float)f->tiledef_special[j].animation.aspect_w *
 758                                                         (float)f->tiledef_special[j].animation.aspect_h;
 759                                         int frame_count = size.Y / frame_height;
 760                                         int frame_length_ms = 1000.0 *
 761                                                         f->tiledef_special[j].animation.length / frame_count;
 762                                         f->special_tiles[j].animation_frame_count = frame_count;
 763                                         f->special_tiles[j].animation_frame_length_ms = frame_length_ms;
 764
 765                                         // If there are no frames for an animation, switch
 766                                         // animation off (so that having specified an animation
 767                                         // for something but not using it in the texture pack
 768                                         // gives no overhead)
 769                                         if(frame_count == 1){
 770                                                 f->special_tiles[j].material_flags &=
 771                                                                 ~MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
 772                                         }
 773                                 }
 774                         }
 775                 }
 776 #endif
 777         }
 778         void serialize(std::ostream &os, u16 protocol_version)
 779         {
 780                 writeU8(os, 1); // version
 781                 u16 count = 0;
 782                 std::ostringstream os2(std::ios::binary);
 783                 for(u32 i=0; i<m_content_features.size(); i++)
 784                 {
 785                         if(i == CONTENT_IGNORE || i == CONTENT_AIR
 786                                         || i == CONTENT_UNKNOWN)
 787                                 continue;
 788                         ContentFeatures *f = &m_content_features[i];
 789                         if(f->name == "")
 790                                 continue;
 791                         writeU16(os2, i);
 792                         // Wrap it in a string to allow different lengths without
 793                         // strict version incompatibilities
 794                         std::ostringstream wrapper_os(std::ios::binary);
 795                         f->serialize(wrapper_os, protocol_version);
 796                         os2<<serializeString(wrapper_os.str());
 797
 798                         assert(count + 1 > count); // must not overflow
 799                         count++;
 800                 }
 801                 writeU16(os, count);
 802                 os<<serializeLongString(os2.str());
 803         }
 804         void deSerialize(std::istream &is)
 805         {
 806                 clear();
 807                 int version = readU8(is);
 808                 if(version != 1)
 809                         throw SerializationError("unsupported NodeDefinitionManager version");
 810                 u16 count = readU16(is);
 811                 std::istringstream is2(deSerializeLongString(is), std::ios::binary);
 812                 ContentFeatures f;
 813                 for(u16 n=0; n<count; n++){
 814                         u16 i = readU16(is2);
 815
 816                         // Read it from the string wrapper
 817                         std::string wrapper = deSerializeString(is2);
 818                         std::istringstream wrapper_is(wrapper, std::ios::binary);
 819                         f.deSerialize(wrapper_is);
 820
 821                         // Check error conditions
 822                         if(i == CONTENT_IGNORE || i == CONTENT_AIR
 823                                         || i == CONTENT_UNKNOWN){
 824                                 infostream<<"NodeDefManager::deSerialize(): WARNING: "
 825                                         <<"not changing builtin node "<<i
 826                                         <<std::endl;
 827                                 continue;
 828                         }
 829                         if(f.name == ""){
 830                                 infostream<<"NodeDefManager::deSerialize(): WARNING: "
 831                                         <<"received empty name"<<std::endl;
 832                                 continue;
 833                         }
 834                         u16 existing_id;
 835                         bool found = m_name_id_mapping.getId(f.name, existing_id);  // ignore aliases
 836                         if(found && i != existing_id){
 837                                 infostream<<"NodeDefManager::deSerialize(): WARNING: "
 838                                         <<"already defined with different ID: "
 839                                         <<f.name<<std::endl;
 840                                 continue;
 841                         }
 842
 843                         // All is ok, add node definition with the requested ID
 844                         if(i >= m_content_features.size())
 845                                 m_content_features.resize((u32)(i) + 1);
 846                         m_content_features[i] = f;
 847                         addNameIdMapping(i, f.name);
 848                         verbosestream<<"deserialized "<<f.name<<std::endl;
 849                 }
 850         }
 851 private:
 852         void addNameIdMapping(content_t i, std::string name)
 853         {
 854                 m_name_id_mapping.set(i, name);
 855                 m_name_id_mapping_with_aliases.insert(std::make_pair(name, i));
 856         }
 857 private:
 858         // Features indexed by id
 859         std::vector<ContentFeatures> m_content_features;
 860         // A mapping for fast converting back and forth between names and ids
 861         NameIdMapping m_name_id_mapping;
 862         // Like m_name_id_mapping, but only from names to ids, and includes
 863         // item aliases too. Updated by updateAliases()
 864         // Note: Not serialized.
 865         std::map<std::string, content_t> m_name_id_mapping_with_aliases;
 866         // A mapping from groups to a list of content_ts (and their levels)
 867         // that belong to it.  Necessary for a direct lookup in getIds().
 868         // Note: Not serialized.
 869         std::map<std::string, GroupItems> m_group_to_items;
 870         // Next possibly free id
 871         content_t m_next_id;
 872 };
 873
 874 IWritableNodeDefManager* createNodeDefManager()
 875 {
 876         return new CNodeDefManager();
 877 }
 878
 879 /*
 880         Serialization of old ContentFeatures formats
 881 */
 882
 883 void ContentFeatures::serializeOld(std::ostream &os, u16 protocol_version)
 884 {
 885         if(protocol_version == 13)
 886         {
 887                 writeU8(os, 5); // version
 888                 os<<serializeString(name);
 889                 writeU16(os, groups.size());
 890                 for(ItemGroupList::const_iterator
 891                                 i = groups.begin(); i != groups.end(); i++){
 892                         os<<serializeString(i->first);
 893                         writeS16(os, i->second);
 894                 }
 895                 writeU8(os, drawtype);
 896                 writeF1000(os, visual_scale);
 897                 writeU8(os, 6);
 898                 for(u32 i=0; i<6; i++)
 899                         tiledef[i].serialize(os, protocol_version);
 900                 writeU8(os, CF_SPECIAL_COUNT);
 901                 for(u32 i=0; i<CF_SPECIAL_COUNT; i++){
 902                         tiledef_special[i].serialize(os, protocol_version);
 903                 }
 904                 writeU8(os, alpha);
 905                 writeU8(os, post_effect_color.getAlpha());
 906                 writeU8(os, post_effect_color.getRed());
 907                 writeU8(os, post_effect_color.getGreen());
 908                 writeU8(os, post_effect_color.getBlue());
 909                 writeU8(os, param_type);
 910                 writeU8(os, param_type_2);
 911                 writeU8(os, is_ground_content);
 912                 writeU8(os, light_propagates);
 913                 writeU8(os, sunlight_propagates);
 914                 writeU8(os, walkable);
 915                 writeU8(os, pointable);
 916                 writeU8(os, diggable);
 917                 writeU8(os, climbable);
 918                 writeU8(os, buildable_to);
 919                 os<<serializeString(""); // legacy: used to be metadata_name
 920                 writeU8(os, liquid_type);
 921                 os<<serializeString(liquid_alternative_flowing);
 922                 os<<serializeString(liquid_alternative_source);
 923                 writeU8(os, liquid_viscosity);
 924                 writeU8(os, light_source);
 925                 writeU32(os, damage_per_second);
 926                 node_box.serialize(os, protocol_version);
 927                 selection_box.serialize(os, protocol_version);
 928                 writeU8(os, legacy_facedir_simple);
 929                 writeU8(os, legacy_wallmounted);
 930                 serializeSimpleSoundSpec(sound_footstep, os);
 931                 serializeSimpleSoundSpec(sound_dig, os);
 932                 serializeSimpleSoundSpec(sound_dug, os);
 933         }
 934         else
 935         {
 936                 throw SerializationError("ContentFeatures::serialize(): Unsupported version requested");
 937         }
 938 }
 939
 940 void ContentFeatures::deSerializeOld(std::istream &is, int version)
 941 {
 942         if(version == 5) // In PROTOCOL_VERSION 13
 943         {
 944                 name = deSerializeString(is);
 945                 groups.clear();
 946                 u32 groups_size = readU16(is);
 947                 for(u32 i=0; i<groups_size; i++){
 948                         std::string name = deSerializeString(is);
 949                         int value = readS16(is);
 950                         groups[name] = value;
 951                 }
 952                 drawtype = (enum NodeDrawType)readU8(is);
 953                 visual_scale = readF1000(is);
 954                 if(readU8(is) != 6)
 955                         throw SerializationError("unsupported tile count");
 956                 for(u32 i=0; i<6; i++)
 957                         tiledef[i].deSerialize(is);
 958                 if(readU8(is) != CF_SPECIAL_COUNT)
 959                         throw SerializationError("unsupported CF_SPECIAL_COUNT");
 960                 for(u32 i=0; i<CF_SPECIAL_COUNT; i++)
 961                         tiledef_special[i].deSerialize(is);
 962                 alpha = readU8(is);
 963                 post_effect_color.setAlpha(readU8(is));
 964                 post_effect_color.setRed(readU8(is));
 965                 post_effect_color.setGreen(readU8(is));
 966                 post_effect_color.setBlue(readU8(is));
 967                 param_type = (enum ContentParamType)readU8(is);
 968                 param_type_2 = (enum ContentParamType2)readU8(is);
 969                 is_ground_content = readU8(is);
 970                 light_propagates = readU8(is);
 971                 sunlight_propagates = readU8(is);
 972                 walkable = readU8(is);
 973                 pointable = readU8(is);
 974                 diggable = readU8(is);
 975                 climbable = readU8(is);
 976                 buildable_to = readU8(is);
 977                 deSerializeString(is); // legacy: used to be metadata_name
 978                 liquid_type = (enum LiquidType)readU8(is);
 979                 liquid_alternative_flowing = deSerializeString(is);
 980                 liquid_alternative_source = deSerializeString(is);
 981                 liquid_viscosity = readU8(is);
 982                 light_source = readU8(is);
 983                 damage_per_second = readU32(is);
 984                 node_box.deSerialize(is);
 985                 selection_box.deSerialize(is);
 986                 legacy_facedir_simple = readU8(is);
 987                 legacy_wallmounted = readU8(is);
 988                 deSerializeSimpleSoundSpec(sound_footstep, is);
 989                 deSerializeSimpleSoundSpec(sound_dig, is);
 990                 deSerializeSimpleSoundSpec(sound_dug, is);
 991         }
 992         else
 993         {
 994                 throw SerializationError("unsupported ContentFeatures version");
 995         }
 996 }
 997