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         waving = 0;
 229         legacy_facedir_simple = false;
 230         legacy_wallmounted = false;
 231         sound_footstep = SimpleSoundSpec();
 232         sound_dig = SimpleSoundSpec("__group");
 233         sound_dug = SimpleSoundSpec();
 234 }
 235
 236 void ContentFeatures::serialize(std::ostream &os, u16 protocol_version)
 237 {
 238         if(protocol_version < 24){
 239                 serializeOld(os, protocol_version);
 240                 return;
 241         }
 242
 243         writeU8(os, 7); // version
 244         os<<serializeString(name);
 245         writeU16(os, groups.size());
 246         for(ItemGroupList::const_iterator
 247                         i = groups.begin(); i != groups.end(); i++){
 248                 os<<serializeString(i->first);
 249                 writeS16(os, i->second);
 250         }
 251         writeU8(os, drawtype);
 252         writeF1000(os, visual_scale);
 253         writeU8(os, 6);
 254         for(u32 i = 0; i < 6; i++)
 255                 tiledef[i].serialize(os, protocol_version);
 256         writeU8(os, CF_SPECIAL_COUNT);
 257         for(u32 i = 0; i < CF_SPECIAL_COUNT; i++){
 258                 tiledef_special[i].serialize(os, protocol_version);
 259         }
 260         writeU8(os, alpha);
 261         writeU8(os, post_effect_color.getAlpha());
 262         writeU8(os, post_effect_color.getRed());
 263         writeU8(os, post_effect_color.getGreen());
 264         writeU8(os, post_effect_color.getBlue());
 265         writeU8(os, param_type);
 266         writeU8(os, param_type_2);
 267         writeU8(os, is_ground_content);
 268         writeU8(os, light_propagates);
 269         writeU8(os, sunlight_propagates);
 270         writeU8(os, walkable);
 271         writeU8(os, pointable);
 272         writeU8(os, diggable);
 273         writeU8(os, climbable);
 274         writeU8(os, buildable_to);
 275         os<<serializeString(""); // legacy: used to be metadata_name
 276         writeU8(os, liquid_type);
 277         os<<serializeString(liquid_alternative_flowing);
 278         os<<serializeString(liquid_alternative_source);
 279         writeU8(os, liquid_viscosity);
 280         writeU8(os, liquid_renewable);
 281         writeU8(os, light_source);
 282         writeU32(os, damage_per_second);
 283         node_box.serialize(os, protocol_version);
 284         selection_box.serialize(os, protocol_version);
 285         writeU8(os, legacy_facedir_simple);
 286         writeU8(os, legacy_wallmounted);
 287         serializeSimpleSoundSpec(sound_footstep, os);
 288         serializeSimpleSoundSpec(sound_dig, os);
 289         serializeSimpleSoundSpec(sound_dug, os);
 290         writeU8(os, rightclickable);
 291         writeU8(os, drowning);
 292         writeU8(os, leveled);
 293         writeU8(os, liquid_range);
 294         writeU8(os, waving);
 295         // Stuff below should be moved to correct place in a version that otherwise changes
 296         // the protocol version
 297 }
 298
 299 void ContentFeatures::deSerialize(std::istream &is)
 300 {
 301         int version = readU8(is);
 302         if(version != 7){
 303                 deSerializeOld(is, version);
 304                 return;
 305         }
 306
 307         name = deSerializeString(is);
 308         groups.clear();
 309         u32 groups_size = readU16(is);
 310         for(u32 i = 0; i < groups_size; i++){
 311                 std::string name = deSerializeString(is);
 312                 int value = readS16(is);
 313                 groups[name] = value;
 314         }
 315         drawtype = (enum NodeDrawType)readU8(is);
 316         visual_scale = readF1000(is);
 317         if(readU8(is) != 6)
 318                 throw SerializationError("unsupported tile count");
 319         for(u32 i = 0; i < 6; i++)
 320                 tiledef[i].deSerialize(is);
 321         if(readU8(is) != CF_SPECIAL_COUNT)
 322                 throw SerializationError("unsupported CF_SPECIAL_COUNT");
 323         for(u32 i = 0; i < CF_SPECIAL_COUNT; i++)
 324                 tiledef_special[i].deSerialize(is);
 325         alpha = readU8(is);
 326         post_effect_color.setAlpha(readU8(is));
 327         post_effect_color.setRed(readU8(is));
 328         post_effect_color.setGreen(readU8(is));
 329         post_effect_color.setBlue(readU8(is));
 330         param_type = (enum ContentParamType)readU8(is);
 331         param_type_2 = (enum ContentParamType2)readU8(is);
 332         is_ground_content = readU8(is);
 333         light_propagates = readU8(is);
 334         sunlight_propagates = readU8(is);
 335         walkable = readU8(is);
 336         pointable = readU8(is);
 337         diggable = readU8(is);
 338         climbable = readU8(is);
 339         buildable_to = readU8(is);
 340         deSerializeString(is); // legacy: used to be metadata_name
 341         liquid_type = (enum LiquidType)readU8(is);
 342         liquid_alternative_flowing = deSerializeString(is);
 343         liquid_alternative_source = deSerializeString(is);
 344         liquid_viscosity = readU8(is);
 345         liquid_renewable = readU8(is);
 346         light_source = readU8(is);
 347         damage_per_second = readU32(is);
 348         node_box.deSerialize(is);
 349         selection_box.deSerialize(is);
 350         legacy_facedir_simple = readU8(is);
 351         legacy_wallmounted = readU8(is);
 352         deSerializeSimpleSoundSpec(sound_footstep, is);
 353         deSerializeSimpleSoundSpec(sound_dig, is);
 354         deSerializeSimpleSoundSpec(sound_dug, is);
 355         rightclickable = readU8(is);
 356         drowning = readU8(is);
 357         leveled = readU8(is);
 358         liquid_range = readU8(is);
 359         waving = readU8(is);
 360         // If you add anything here, insert it primarily inside the try-catch
 361         // block to not need to increase the version.
 362         try{
 363                 // Stuff below should be moved to correct place in a version that
 364                 // otherwise changes the protocol version
 365         }catch(SerializationError &e) {};
 366 }
 367
 368 /*
 369         CNodeDefManager
 370 */
 371
 372 class CNodeDefManager: public IWritableNodeDefManager
 373 {
 374 public:
 375         void clear()
 376         {
 377                 m_content_features.clear();
 378                 m_name_id_mapping.clear();
 379                 m_name_id_mapping_with_aliases.clear();
 380                 m_group_to_items.clear();
 381                 m_next_id = 0;
 382
 383                 u32 initial_length = 0;
 384                 initial_length = MYMAX(initial_length, CONTENT_UNKNOWN + 1);
 385                 initial_length = MYMAX(initial_length, CONTENT_AIR + 1);
 386                 initial_length = MYMAX(initial_length, CONTENT_IGNORE + 1);
 387                 m_content_features.resize(initial_length);
 388
 389                 // Set CONTENT_UNKNOWN
 390                 {
 391                         ContentFeatures f;
 392                         f.name = "unknown";
 393                         // Insert directly into containers
 394                         content_t c = CONTENT_UNKNOWN;
 395                         m_content_features[c] = f;
 396                         addNameIdMapping(c, f.name);
 397                 }
 398
 399                 // Set CONTENT_AIR
 400                 {
 401                         ContentFeatures f;
 402                         f.name                = "air";
 403                         f.drawtype            = NDT_AIRLIKE;
 404                         f.param_type          = CPT_LIGHT;
 405                         f.light_propagates    = true;
 406                         f.sunlight_propagates = true;
 407                         f.walkable            = false;
 408                         f.pointable           = false;
 409                         f.diggable            = false;
 410                         f.buildable_to        = true;
 411                         f.is_ground_content   = true;
 412                         // Insert directly into containers
 413                         content_t c = CONTENT_AIR;
 414                         m_content_features[c] = f;
 415                         addNameIdMapping(c, f.name);
 416                 }
 417
 418                 // Set CONTENT_IGNORE
 419                 {
 420                         ContentFeatures f;
 421                         f.name                = "ignore";
 422                         f.drawtype            = NDT_AIRLIKE;
 423                         f.param_type          = CPT_NONE;
 424                         f.light_propagates    = false;
 425                         f.sunlight_propagates = false;
 426                         f.walkable            = false;
 427                         f.pointable           = false;
 428                         f.diggable            = false;
 429                         f.buildable_to        = true; // A way to remove accidental CONTENT_IGNOREs
 430                         f.is_ground_content   = true;
 431                         // Insert directly into containers
 432                         content_t c = CONTENT_IGNORE;
 433                         m_content_features[c] = f;
 434                         addNameIdMapping(c, f.name);
 435                 }
 436         }
 437         CNodeDefManager()
 438         {
 439                 clear();
 440         }
 441         virtual ~CNodeDefManager()
 442         {
 443         }
 444         virtual IWritableNodeDefManager* clone()
 445         {
 446                 CNodeDefManager *mgr = new CNodeDefManager();
 447                 *mgr = *this;
 448                 return mgr;
 449         }
 450         virtual const ContentFeatures& get(content_t c) const
 451         {
 452                 if(c < m_content_features.size())
 453                         return m_content_features[c];
 454                 else
 455                         return m_content_features[CONTENT_UNKNOWN];
 456         }
 457         virtual const ContentFeatures& get(const MapNode &n) const
 458         {
 459                 return get(n.getContent());
 460         }
 461         virtual bool getId(const std::string &name, content_t &result) const
 462         {
 463                 std::map<std::string, content_t>::const_iterator
 464                         i = m_name_id_mapping_with_aliases.find(name);
 465                 if(i == m_name_id_mapping_with_aliases.end())
 466                         return false;
 467                 result = i->second;
 468                 return true;
 469         }
 470         virtual content_t getId(const std::string &name) const
 471         {
 472                 content_t id = CONTENT_IGNORE;
 473                 getId(name, id);
 474                 return id;
 475         }
 476         virtual void getIds(const std::string &name, std::set<content_t> &result)
 477                         const
 478         {
 479                 //TimeTaker t("getIds", NULL, PRECISION_MICRO);
 480                 if(name.substr(0,6) != "group:"){
 481                         content_t id = CONTENT_IGNORE;
 482                         if(getId(name, id))
 483                                 result.insert(id);
 484                         return;
 485                 }
 486                 std::string group = name.substr(6);
 487
 488                 std::map<std::string, GroupItems>::const_iterator
 489                         i = m_group_to_items.find(group);
 490                 if (i == m_group_to_items.end())
 491                         return;
 492
 493                 const GroupItems &items = i->second;
 494                 for (GroupItems::const_iterator j = items.begin();
 495                         j != items.end(); ++j) {
 496                         if ((*j).second != 0)
 497                                 result.insert((*j).first);
 498                 }
 499                 //printf("getIds: %dus\n", t.stop());
 500         }
 501         virtual const ContentFeatures& get(const std::string &name) const
 502         {
 503                 content_t id = CONTENT_UNKNOWN;
 504                 getId(name, id);
 505                 return get(id);
 506         }
 507         // returns CONTENT_IGNORE if no free ID found
 508         content_t allocateId()
 509         {
 510                 for(content_t id = m_next_id;
 511                                 id >= m_next_id; // overflow?
 512                                 ++id){
 513                         while(id >= m_content_features.size()){
 514                                 m_content_features.push_back(ContentFeatures());
 515                         }
 516                         const ContentFeatures &f = m_content_features[id];
 517                         if(f.name == ""){
 518                                 m_next_id = id + 1;
 519                                 return id;
 520                         }
 521                 }
 522                 // If we arrive here, an overflow occurred in id.
 523                 // That means no ID was found
 524                 return CONTENT_IGNORE;
 525         }
 526         // IWritableNodeDefManager
 527         virtual content_t set(const std::string &name,
 528                         const ContentFeatures &def)
 529         {
 530                 assert(name != "");
 531                 assert(name == def.name);
 532
 533                 // Don't allow redefining ignore (but allow air and unknown)
 534                 if(name == "ignore"){
 535                         infostream<<"NodeDefManager: WARNING: Ignoring "
 536                                         <<"CONTENT_IGNORE redefinition"<<std::endl;
 537                         return CONTENT_IGNORE;
 538                 }
 539
 540                 content_t id = CONTENT_IGNORE;
 541                 bool found = m_name_id_mapping.getId(name, id);  // ignore aliases
 542                 if(!found){
 543                         // Get new id
 544                         id = allocateId();
 545                         if(id == CONTENT_IGNORE){
 546                                 infostream<<"NodeDefManager: WARNING: Absolute "
 547                                                 <<"limit reached"<<std::endl;
 548                                 return CONTENT_IGNORE;
 549                         }
 550                         assert(id != CONTENT_IGNORE);
 551                         addNameIdMapping(id, name);
 552                 }
 553                 m_content_features[id] = def;
 554                 verbosestream<<"NodeDefManager: registering content id \""<<id
 555                                 <<"\": name=\""<<def.name<<"\""<<std::endl;
 556
 557                 // Add this content to the list of all groups it belongs to
 558                 // FIXME: This should remove a node from groups it no longer
 559                 // belongs to when a node is re-registered
 560                 for (ItemGroupList::const_iterator i = def.groups.begin();
 561                         i != def.groups.end(); ++i) {
 562                         std::string group_name = i->first;
 563
 564                         std::map<std::string, GroupItems>::iterator
 565                                 j = m_group_to_items.find(group_name);
 566                         if (j == m_group_to_items.end()) {
 567                                 m_group_to_items[group_name].push_back(
 568                                                 std::make_pair(id, i->second));
 569                         } else {
 570                                 GroupItems &items = j->second;
 571                                 items.push_back(std::make_pair(id, i->second));
 572                         }
 573                 }
 574                 return id;
 575         }
 576         virtual content_t allocateDummy(const std::string &name)
 577         {
 578                 assert(name != "");
 579                 ContentFeatures f;
 580                 f.name = name;
 581                 return set(name, f);
 582         }
 583         virtual void updateAliases(IItemDefManager *idef)
 584         {
 585                 std::set<std::string> all = idef->getAll();
 586                 m_name_id_mapping_with_aliases.clear();
 587                 for(std::set<std::string>::iterator
 588                                 i = all.begin(); i != all.end(); i++)
 589                 {
 590                         std::string name = *i;
 591                         std::string convert_to = idef->getAlias(name);
 592                         content_t id;
 593                         if(m_name_id_mapping.getId(convert_to, id))
 594                         {
 595                                 m_name_id_mapping_with_aliases.insert(
 596                                                 std::make_pair(name, id));
 597                         }
 598                 }
 599         }
 600         virtual void updateTextures(ITextureSource *tsrc,
 601                 IShaderSource *shdsrc)
 602         {
 603 #ifndef SERVER
 604                 infostream<<"CNodeDefManager::updateTextures(): Updating "
 605                                 <<"textures in node definitions"<<std::endl;
 606
 607                 bool new_style_water = g_settings->getBool("new_style_water");
 608                 bool new_style_leaves = g_settings->getBool("new_style_leaves");
 609                 bool opaque_water = g_settings->getBool("opaque_water");
 610                 bool enable_shaders = g_settings->getBool("enable_shaders");
 611                 bool enable_bumpmapping = g_settings->getBool("enable_bumpmapping");
 612                 bool enable_parallax_occlusion = g_settings->getBool("enable_parallax_occlusion");
 613
 614                 for(u32 i=0; i<m_content_features.size(); i++)
 615                 {
 616                         ContentFeatures *f = &m_content_features[i];
 617
 618                         // Figure out the actual tiles to use
 619                         TileDef tiledef[6];
 620                         for(u32 j = 0; j < 6; j++)
 621                         {
 622                                 tiledef[j] = f->tiledef[j];
 623                                 if(tiledef[j].name == "")
 624                                         tiledef[j].name = "unknown_node.png";
 625                         }
 626
 627                         bool is_liquid = false;
 628                         bool is_water_surface = false;
 629
 630                         u8 material_type;
 631                         material_type = (f->alpha == 255) ? TILE_MATERIAL_BASIC : TILE_MATERIAL_ALPHA;
 632
 633                         switch(f->drawtype){
 634                         default:
 635                         case NDT_NORMAL:
 636                                 f->solidness = 2;
 637                                 break;
 638                         case NDT_AIRLIKE:
 639                                 f->solidness = 0;
 640                                 break;
 641                         case NDT_LIQUID:
 642                                 assert(f->liquid_type == LIQUID_SOURCE);
 643                                 if(opaque_water)
 644                                         f->alpha = 255;
 645                                 if(new_style_water){
 646                                         f->solidness = 0;
 647                                 } else {
 648                                         f->solidness = 1;
 649                                         f->backface_culling = false;
 650                                 }
 651                                 is_liquid = true;
 652                                 break;
 653                         case NDT_FLOWINGLIQUID:
 654                                 assert(f->liquid_type == LIQUID_FLOWING);
 655                                 f->solidness = 0;
 656                                 if(opaque_water)
 657                                         f->alpha = 255;
 658                                 is_liquid = true;
 659                                 break;
 660                         case NDT_GLASSLIKE:
 661                                 f->solidness = 0;
 662                                 f->visual_solidness = 1;
 663                                 break;
 664                         case NDT_GLASSLIKE_FRAMED:
 665                                 f->solidness = 0;
 666                                 f->visual_solidness = 1;
 667                                 break;
 668                         case NDT_ALLFACES:
 669                                 f->solidness = 0;
 670                                 f->visual_solidness = 1;
 671                                 break;
 672                         case NDT_ALLFACES_OPTIONAL:
 673                                 if(new_style_leaves){
 674                                         f->drawtype = NDT_ALLFACES;
 675                                         f->solidness = 0;
 676                                         f->visual_solidness = 1;
 677                                 } else {
 678                                         f->drawtype = NDT_NORMAL;
 679                                         f->solidness = 2;
 680                                         for(u32 i=0; i<6; i++){
 681                                                 tiledef[i].name += std::string("^[noalpha");
 682                                         }
 683                                 }
 684                                 if (f->waving == 1)
 685                                         material_type = TILE_MATERIAL_WAVING_LEAVES;
 686                                 break;
 687                         case NDT_PLANTLIKE:
 688                                 f->solidness = 0;
 689                                 f->backface_culling = false;
 690                                 if (f->waving == 1)
 691                                         material_type = TILE_MATERIAL_WAVING_PLANTS;
 692                                 break;
 693                         case NDT_TORCHLIKE:
 694                         case NDT_SIGNLIKE:
 695                         case NDT_FENCELIKE:
 696                         case NDT_RAILLIKE:
 697                         case NDT_NODEBOX:
 698                                 f->solidness = 0;
 699                                 break;
 700                         }
 701
 702                         if (is_liquid){
 703                                 material_type = (f->alpha == 255) ? TILE_MATERIAL_LIQUID_OPAQUE : TILE_MATERIAL_LIQUID_TRANSPARENT;
 704                                 if (f->name == "default:water_source")
 705                                         is_water_surface = true;
 706                         }
 707                         u32 tile_shader[6];
 708                         for(u16 j=0; j<6; j++)
 709                                 tile_shader[j] = shdsrc->getShader("nodes_shader",material_type, f->drawtype);
 710
 711                         if (is_water_surface)
 712                                 tile_shader[0] = shdsrc->getShader("water_surface_shader",material_type, f->drawtype);
 713
 714                         // Tiles (fill in f->tiles[])
 715                         for(u16 j = 0; j < 6; j++){
 716                                 // Shader
 717                                 f->tiles[j].shader_id = tile_shader[j];
 718                                 // Texture
 719                                 f->tiles[j].texture = tsrc->getTexture(
 720                                                 tiledef[j].name,
 721                                                 &f->tiles[j].texture_id);
 722                                 // Normal texture
 723                                 if (enable_shaders && (enable_bumpmapping || enable_parallax_occlusion))
 724                                         f->tiles[j].normal_texture = tsrc->getNormalTexture(tiledef[j].name);
 725                                 // Alpha
 726                                 f->tiles[j].alpha = f->alpha;
 727                                 // Material type
 728                                 f->tiles[j].material_type = material_type;
 729                                 // Material flags
 730                                 f->tiles[j].material_flags = 0;
 731                                 if(f->backface_culling)
 732                                         f->tiles[j].material_flags |= MATERIAL_FLAG_BACKFACE_CULLING;
 733                                 if(tiledef[j].animation.type == TAT_VERTICAL_FRAMES)
 734                                         f->tiles[j].material_flags |= MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
 735                                 // Animation parameters
 736                                 int frame_count = 1;
 737                                 if(f->tiles[j].material_flags & MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES) {
 738                                         // Get texture size to determine frame count by
 739                                         // aspect ratio
 740                                         v2u32 size = f->tiles[j].texture->getOriginalSize();
 741                                         int frame_height = (float)size.X /
 742                                                         (float)tiledef[j].animation.aspect_w *
 743                                                         (float)tiledef[j].animation.aspect_h;
 744                                         frame_count = size.Y / frame_height;
 745                                         int frame_length_ms = 1000.0 *
 746                                                         tiledef[j].animation.length / frame_count;
 747                                         f->tiles[j].animation_frame_count = frame_count;
 748                                         f->tiles[j].animation_frame_length_ms = frame_length_ms;
 749                                 }
 750                                 if(frame_count == 1) {
 751                                         f->tiles[j].material_flags &= ~MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
 752                                 } else {
 753                                         std::ostringstream os(std::ios::binary);
 754                                         for (int i = 0; i < frame_count; i++) {
 755                                                 FrameSpec frame;
 756                                                 os.str("");
 757                                                 os<<tiledef[j].name<<"^[verticalframe:"<<frame_count<<":"<<i;
 758                                                 frame.texture = tsrc->getTexture(os.str(), &frame.texture_id);
 759                                                 if (f->tiles[j].normal_texture)
 760                                                         frame.normal_texture = tsrc->getNormalTexture(os.str());
 761                                                 f->tiles[j].frames[i]=frame;
 762                                         }
 763                                 }
 764                         }
 765                         // Special tiles (fill in f->special_tiles[])
 766                         for(u16 j=0; j<CF_SPECIAL_COUNT; j++){
 767                                 // Shader
 768                                 f->special_tiles[j].shader_id = tile_shader[j];
 769                                 // Texture
 770                                 f->special_tiles[j].texture = tsrc->getTexture(
 771                                                 f->tiledef_special[j].name,
 772                                                 &f->special_tiles[j].texture_id);
 773                                 // Normal texture
 774                                 if (enable_shaders && (enable_bumpmapping || enable_parallax_occlusion))
 775                                         f->special_tiles[j].normal_texture = tsrc->getNormalTexture(f->tiledef_special[j].name);
 776                                 // Alpha
 777                                 f->special_tiles[j].alpha = f->alpha;
 778                                 // Material type
 779                                 f->special_tiles[j].material_type = material_type;
 780                                 // Material flags
 781                                 f->special_tiles[j].material_flags = 0;
 782                                 if(f->tiledef_special[j].backface_culling)
 783                                         f->special_tiles[j].material_flags |= MATERIAL_FLAG_BACKFACE_CULLING;
 784                                 if(f->tiledef_special[j].animation.type == TAT_VERTICAL_FRAMES)
 785                                         f->special_tiles[j].material_flags |= MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
 786                                 // Animation parameters
 787                                 int frame_count = 1;
 788                                 if(f->special_tiles[j].material_flags & MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES) {
 789                                         // Get texture size to determine frame count by
 790                                         // aspect ratio
 791                                         v2u32 size = f->special_tiles[j].texture->getOriginalSize();
 792                                         int frame_height = (float)size.X /
 793                                                         (float)f->tiledef_special[j].animation.aspect_w *
 794                                                         (float)f->tiledef_special[j].animation.aspect_h;
 795                                         frame_count = size.Y / frame_height;
 796                                         int frame_length_ms = 1000.0 *
 797                                                         f->tiledef_special[j].animation.length / frame_count;
 798                                         f->special_tiles[j].animation_frame_count = frame_count;
 799                                         f->special_tiles[j].animation_frame_length_ms = frame_length_ms;
 800                                 }
 801                                 if(frame_count == 1) {
 802                                         f->special_tiles[j].material_flags &= ~MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
 803                                 } else {
 804                                         std::ostringstream os(std::ios::binary);
 805                                         for (int i = 0; i < frame_count; i++) {
 806                                                 FrameSpec frame;
 807                                                 os.str("");
 808                                                 os<<f->tiledef_special[j].name<<"^[verticalframe:"<<frame_count<<":"<<i;
 809                                                 frame.texture = tsrc->getTexture(os.str(), &frame.texture_id);
 810                                                 if (f->special_tiles[j].normal_texture)
 811                                                         frame.normal_texture = tsrc->getNormalTexture(os.str());
 812                                                 f->special_tiles[j].frames[i]=frame;
 813                                         }
 814                                 }
 815                         }
 816                 }
 817 #endif
 818         }
 819         void serialize(std::ostream &os, u16 protocol_version)
 820         {
 821                 writeU8(os, 1); // version
 822                 u16 count = 0;
 823                 std::ostringstream os2(std::ios::binary);
 824                 for(u32 i = 0; i < m_content_features.size(); i++)
 825                 {
 826                         if(i == CONTENT_IGNORE || i == CONTENT_AIR
 827                                         || i == CONTENT_UNKNOWN)
 828                                 continue;
 829                         ContentFeatures *f = &m_content_features[i];
 830                         if(f->name == "")
 831                                 continue;
 832                         writeU16(os2, i);
 833                         // Wrap it in a string to allow different lengths without
 834                         // strict version incompatibilities
 835                         std::ostringstream wrapper_os(std::ios::binary);
 836                         f->serialize(wrapper_os, protocol_version);
 837                         os2<<serializeString(wrapper_os.str());
 838
 839                         assert(count + 1 > count); // must not overflow
 840                         count++;
 841                 }
 842                 writeU16(os, count);
 843                 os<<serializeLongString(os2.str());
 844         }
 845         void deSerialize(std::istream &is)
 846         {
 847                 clear();
 848                 int version = readU8(is);
 849                 if(version != 1)
 850                         throw SerializationError("unsupported NodeDefinitionManager version");
 851                 u16 count = readU16(is);
 852                 std::istringstream is2(deSerializeLongString(is), std::ios::binary);
 853                 ContentFeatures f;
 854                 for(u16 n = 0; n < count; n++){
 855                         u16 i = readU16(is2);
 856
 857                         // Read it from the string wrapper
 858                         std::string wrapper = deSerializeString(is2);
 859                         std::istringstream wrapper_is(wrapper, std::ios::binary);
 860                         f.deSerialize(wrapper_is);
 861
 862                         // Check error conditions
 863                         if(i == CONTENT_IGNORE || i == CONTENT_AIR
 864                                         || i == CONTENT_UNKNOWN){
 865                                 infostream<<"NodeDefManager::deSerialize(): WARNING: "
 866                                         <<"not changing builtin node "<<i
 867                                         <<std::endl;
 868                                 continue;
 869                         }
 870                         if(f.name == ""){
 871                                 infostream<<"NodeDefManager::deSerialize(): WARNING: "
 872                                         <<"received empty name"<<std::endl;
 873                                 continue;
 874                         }
 875                         u16 existing_id;
 876                         bool found = m_name_id_mapping.getId(f.name, existing_id);  // ignore aliases
 877                         if(found && i != existing_id){
 878                                 infostream<<"NodeDefManager::deSerialize(): WARNING: "
 879                                         <<"already defined with different ID: "
 880                                         <<f.name<<std::endl;
 881                                 continue;
 882                         }
 883
 884                         // All is ok, add node definition with the requested ID
 885                         if(i >= m_content_features.size())
 886                                 m_content_features.resize((u32)(i) + 1);
 887                         m_content_features[i] = f;
 888                         addNameIdMapping(i, f.name);
 889                         verbosestream<<"deserialized "<<f.name<<std::endl;
 890                 }
 891         }
 892 private:
 893         void addNameIdMapping(content_t i, std::string name)
 894         {
 895                 m_name_id_mapping.set(i, name);
 896                 m_name_id_mapping_with_aliases.insert(std::make_pair(name, i));
 897         }
 898 private:
 899         // Features indexed by id
 900         std::vector<ContentFeatures> m_content_features;
 901         // A mapping for fast converting back and forth between names and ids
 902         NameIdMapping m_name_id_mapping;
 903         // Like m_name_id_mapping, but only from names to ids, and includes
 904         // item aliases too. Updated by updateAliases()
 905         // Note: Not serialized.
 906         std::map<std::string, content_t> m_name_id_mapping_with_aliases;
 907         // A mapping from groups to a list of content_ts (and their levels)
 908         // that belong to it.  Necessary for a direct lookup in getIds().
 909         // Note: Not serialized.
 910         std::map<std::string, GroupItems> m_group_to_items;
 911         // Next possibly free id
 912         content_t m_next_id;
 913 };
 914
 915 IWritableNodeDefManager* createNodeDefManager()
 916 {
 917         return new CNodeDefManager();
 918 }
 919
 920 /*
 921         Serialization of old ContentFeatures formats
 922 */
 923
 924 void ContentFeatures::serializeOld(std::ostream &os, u16 protocol_version)
 925 {
 926         if(protocol_version == 13)
 927         {
 928                 writeU8(os, 5); // version
 929                 os<<serializeString(name);
 930                 writeU16(os, groups.size());
 931                 for(ItemGroupList::const_iterator
 932                                 i = groups.begin(); i != groups.end(); i++){
 933                         os<<serializeString(i->first);
 934                         writeS16(os, i->second);
 935                 }
 936                 writeU8(os, drawtype);
 937                 writeF1000(os, visual_scale);
 938                 writeU8(os, 6);
 939                 for(u32 i = 0; i < 6; i++)
 940                         tiledef[i].serialize(os, protocol_version);
 941                 //CF_SPECIAL_COUNT = 2 before cf ver. 7 and protocol ver. 24
 942                 writeU8(os, 2);
 943                 for(u32 i = 0; i < 2; i++){
 944                         tiledef_special[i].serialize(os, protocol_version);
 945                 }
 946                 writeU8(os, alpha);
 947                 writeU8(os, post_effect_color.getAlpha());
 948                 writeU8(os, post_effect_color.getRed());
 949                 writeU8(os, post_effect_color.getGreen());
 950                 writeU8(os, post_effect_color.getBlue());
 951                 writeU8(os, param_type);
 952                 writeU8(os, param_type_2);
 953                 writeU8(os, is_ground_content);
 954                 writeU8(os, light_propagates);
 955                 writeU8(os, sunlight_propagates);
 956                 writeU8(os, walkable);
 957                 writeU8(os, pointable);
 958                 writeU8(os, diggable);
 959                 writeU8(os, climbable);
 960                 writeU8(os, buildable_to);
 961                 os<<serializeString(""); // legacy: used to be metadata_name
 962                 writeU8(os, liquid_type);
 963                 os<<serializeString(liquid_alternative_flowing);
 964                 os<<serializeString(liquid_alternative_source);
 965                 writeU8(os, liquid_viscosity);
 966                 writeU8(os, light_source);
 967                 writeU32(os, damage_per_second);
 968                 node_box.serialize(os, protocol_version);
 969                 selection_box.serialize(os, protocol_version);
 970                 writeU8(os, legacy_facedir_simple);
 971                 writeU8(os, legacy_wallmounted);
 972                 serializeSimpleSoundSpec(sound_footstep, os);
 973                 serializeSimpleSoundSpec(sound_dig, os);
 974                 serializeSimpleSoundSpec(sound_dug, os);
 975         }
 976         else if (protocol_version > 13 && protocol_version < 24) {
 977                 writeU8(os, 6); // version
 978                 os<<serializeString(name);
 979                 writeU16(os, groups.size());
 980                 for(ItemGroupList::const_iterator
 981                         i = groups.begin(); i != groups.end(); i++){
 982                                 os<<serializeString(i->first);
 983                                 writeS16(os, i->second);
 984                 }
 985                 writeU8(os, drawtype);
 986                 writeF1000(os, visual_scale);
 987                 writeU8(os, 6);
 988                 for(u32 i = 0; i < 6; i++)
 989                         tiledef[i].serialize(os, protocol_version);
 990                 //CF_SPECIAL_COUNT = 2 before cf ver. 7 and protocol ver. 24
 991                 writeU8(os, 2);
 992                 for(u32 i = 0; i < 2; i++){
 993                         tiledef_special[i].serialize(os, protocol_version);
 994                 }
 995                 writeU8(os, alpha);
 996                 writeU8(os, post_effect_color.getAlpha());
 997                 writeU8(os, post_effect_color.getRed());
 998                 writeU8(os, post_effect_color.getGreen());
 999                 writeU8(os, post_effect_color.getBlue());
1000                 writeU8(os, param_type);
1001                 writeU8(os, param_type_2);
1002                 writeU8(os, is_ground_content);
1003                 writeU8(os, light_propagates);
1004                 writeU8(os, sunlight_propagates);
1005                 writeU8(os, walkable);
1006                 writeU8(os, pointable);
1007                 writeU8(os, diggable);
1008                 writeU8(os, climbable);
1009                 writeU8(os, buildable_to);
1010                 os<<serializeString(""); // legacy: used to be metadata_name
1011                 writeU8(os, liquid_type);
1012                 os<<serializeString(liquid_alternative_flowing);
1013                 os<<serializeString(liquid_alternative_source);
1014                 writeU8(os, liquid_viscosity);
1015                 writeU8(os, liquid_renewable);
1016                 writeU8(os, light_source);
1017                 writeU32(os, damage_per_second);
1018                 node_box.serialize(os, protocol_version);
1019                 selection_box.serialize(os, protocol_version);
1020                 writeU8(os, legacy_facedir_simple);
1021                 writeU8(os, legacy_wallmounted);
1022                 serializeSimpleSoundSpec(sound_footstep, os);
1023                 serializeSimpleSoundSpec(sound_dig, os);
1024                 serializeSimpleSoundSpec(sound_dug, os);
1025                 writeU8(os, rightclickable);
1026                 writeU8(os, drowning);
1027                 writeU8(os, leveled);
1028                 writeU8(os, liquid_range);
1029         } else
1030                 throw SerializationError("ContentFeatures::serialize(): Unsupported version requested");
1031 }
1032
1033 void ContentFeatures::deSerializeOld(std::istream &is, int version)
1034 {
1035         if(version == 5) // In PROTOCOL_VERSION 13
1036         {
1037                 name = deSerializeString(is);
1038                 groups.clear();
1039                 u32 groups_size = readU16(is);
1040                 for(u32 i=0; i<groups_size; i++){
1041                         std::string name = deSerializeString(is);
1042                         int value = readS16(is);
1043                         groups[name] = value;
1044                 }
1045                 drawtype = (enum NodeDrawType)readU8(is);
1046                 visual_scale = readF1000(is);
1047                 if(readU8(is) != 6)
1048                         throw SerializationError("unsupported tile count");
1049                 for(u32 i=0; i<6; i++)
1050                         tiledef[i].deSerialize(is);
1051                 if(readU8(is) != CF_SPECIAL_COUNT)
1052                         throw SerializationError("unsupported CF_SPECIAL_COUNT");
1053                 for(u32 i=0; i<CF_SPECIAL_COUNT; i++)
1054                         tiledef_special[i].deSerialize(is);
1055                 alpha = readU8(is);
1056                 post_effect_color.setAlpha(readU8(is));
1057                 post_effect_color.setRed(readU8(is));
1058                 post_effect_color.setGreen(readU8(is));
1059                 post_effect_color.setBlue(readU8(is));
1060                 param_type = (enum ContentParamType)readU8(is);
1061                 param_type_2 = (enum ContentParamType2)readU8(is);
1062                 is_ground_content = readU8(is);
1063                 light_propagates = readU8(is);
1064                 sunlight_propagates = readU8(is);
1065                 walkable = readU8(is);
1066                 pointable = readU8(is);
1067                 diggable = readU8(is);
1068                 climbable = readU8(is);
1069                 buildable_to = readU8(is);
1070                 deSerializeString(is); // legacy: used to be metadata_name
1071                 liquid_type = (enum LiquidType)readU8(is);
1072                 liquid_alternative_flowing = deSerializeString(is);
1073                 liquid_alternative_source = deSerializeString(is);
1074                 liquid_viscosity = readU8(is);
1075                 light_source = readU8(is);
1076                 damage_per_second = readU32(is);
1077                 node_box.deSerialize(is);
1078                 selection_box.deSerialize(is);
1079                 legacy_facedir_simple = readU8(is);
1080                 legacy_wallmounted = readU8(is);
1081                 deSerializeSimpleSoundSpec(sound_footstep, is);
1082                 deSerializeSimpleSoundSpec(sound_dig, is);
1083                 deSerializeSimpleSoundSpec(sound_dug, is);
1084         } else if (version == 6) {
1085                 name = deSerializeString(is);
1086                 groups.clear();
1087                 u32 groups_size = readU16(is);
1088                 for(u32 i=0; i<groups_size; i++){
1089                         std::string name = deSerializeString(is);
1090                         int     value = readS16(is);
1091                         groups[name] = value;
1092                 }
1093                 drawtype = (enum NodeDrawType)readU8(is);
1094                 visual_scale = readF1000(is);
1095                 if(readU8(is) != 6)
1096                         throw SerializationError("unsupported tile count");
1097                 for(u32 i=0; i<6; i++)
1098                         tiledef[i].deSerialize(is);
1099                 // CF_SPECIAL_COUNT in version 6 = 2
1100                 if(readU8(is) != 2)
1101                         throw SerializationError("unsupported CF_SPECIAL_COUNT");
1102                 for(u32 i=0; i<2; i++)
1103                         tiledef_special[i].deSerialize(is);
1104                 alpha = readU8(is);
1105                 post_effect_color.setAlpha(readU8(is));
1106                 post_effect_color.setRed(readU8(is));
1107                 post_effect_color.setGreen(readU8(is));
1108                 post_effect_color.setBlue(readU8(is));
1109                 param_type = (enum ContentParamType)readU8(is);
1110                 param_type_2 = (enum ContentParamType2)readU8(is);
1111                 is_ground_content = readU8(is);
1112                 light_propagates = readU8(is);
1113                 sunlight_propagates = readU8(is);
1114                 walkable = readU8(is);
1115                 pointable = readU8(is);
1116                 diggable = readU8(is);
1117                 climbable = readU8(is);
1118                 buildable_to = readU8(is);
1119                 deSerializeString(is); // legacy: used to be metadata_name
1120                 liquid_type = (enum LiquidType)readU8(is);
1121                 liquid_alternative_flowing = deSerializeString(is);
1122                 liquid_alternative_source = deSerializeString(is);
1123                 liquid_viscosity = readU8(is);
1124                 liquid_renewable = readU8(is);
1125                 light_source = readU8(is);
1126                 damage_per_second = readU32(is);
1127                 node_box.deSerialize(is);
1128                 selection_box.deSerialize(is);
1129                 legacy_facedir_simple = readU8(is);
1130                 legacy_wallmounted = readU8(is);
1131                 deSerializeSimpleSoundSpec(sound_footstep, is);
1132                 deSerializeSimpleSoundSpec(sound_dig, is);
1133                 deSerializeSimpleSoundSpec(sound_dug, is);
1134                 rightclickable = readU8(is);
1135                 drowning = readU8(is);
1136                 leveled = readU8(is);
1137                 liquid_range = readU8(is);
1138         } else
1139                 throw SerializationError("unsupported ContentFeatures version");
1140 }