src/nodedef.cpp

   1 /*
   2 Minetest-c55
   3 Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU 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/serialize.h"
  31
  32 /*
  33         NodeBox
  34 */
  35
  36 void NodeBox::reset()
  37 {
  38         type = NODEBOX_REGULAR;
  39         // default is empty
  40         fixed.clear();
  41         // default is sign/ladder-like
  42         wall_top = aabb3f(-BS/2, BS/2-BS/16., -BS/2, BS/2, BS/2, BS/2);
  43         wall_bottom = aabb3f(-BS/2, -BS/2, -BS/2, BS/2, -BS/2+BS/16., BS/2);
  44         wall_side = aabb3f(-BS/2, -BS/2, -BS/2, -BS/2+BS/16., BS/2, BS/2);
  45 }
  46
  47 void NodeBox::serialize(std::ostream &os) const
  48 {
  49         writeU8(os, 1); // version
  50         writeU8(os, type);
  51
  52         if(type == NODEBOX_FIXED)
  53         {
  54                 writeU16(os, fixed.size());
  55                 for(std::vector<aabb3f>::const_iterator
  56                                 i = fixed.begin();
  57                                 i != fixed.end(); i++)
  58                 {
  59                         writeV3F1000(os, i->MinEdge);
  60                         writeV3F1000(os, i->MaxEdge);
  61                 }
  62         }
  63         else if(type == NODEBOX_WALLMOUNTED)
  64         {
  65                 writeV3F1000(os, wall_top.MinEdge);
  66                 writeV3F1000(os, wall_top.MaxEdge);
  67                 writeV3F1000(os, wall_bottom.MinEdge);
  68                 writeV3F1000(os, wall_bottom.MaxEdge);
  69                 writeV3F1000(os, wall_side.MinEdge);
  70                 writeV3F1000(os, wall_side.MaxEdge);
  71         }
  72 }
  73
  74 void NodeBox::deSerialize(std::istream &is)
  75 {
  76         int version = readU8(is);
  77         if(version != 1)
  78                 throw SerializationError("unsupported NodeBox version");
  79
  80         reset();
  81
  82         type = (enum NodeBoxType)readU8(is);
  83
  84         if(type == NODEBOX_FIXED)
  85         {
  86                 u16 fixed_count = readU16(is);
  87                 while(fixed_count--)
  88                 {
  89                         aabb3f box;
  90                         box.MinEdge = readV3F1000(is);
  91                         box.MaxEdge = readV3F1000(is);
  92                         fixed.push_back(box);
  93                 }
  94         }
  95         else if(type == NODEBOX_WALLMOUNTED)
  96         {
  97                 wall_top.MinEdge = readV3F1000(is);
  98                 wall_top.MaxEdge = readV3F1000(is);
  99                 wall_bottom.MinEdge = readV3F1000(is);
 100                 wall_bottom.MaxEdge = readV3F1000(is);
 101                 wall_side.MinEdge = readV3F1000(is);
 102                 wall_side.MaxEdge = readV3F1000(is);
 103         }
 104 }
 105
 106 /*
 107         TileDef
 108 */
 109
 110 void TileDef::serialize(std::ostream &os) const
 111 {
 112         writeU8(os, 0); // version
 113         os<<serializeString(name);
 114         writeU8(os, animation.type);
 115         writeU16(os, animation.aspect_w);
 116         writeU16(os, animation.aspect_h);
 117         writeF1000(os, animation.length);
 118 }
 119
 120 void TileDef::deSerialize(std::istream &is)
 121 {
 122         int version = readU8(is);
 123         if(version != 0)
 124                 throw SerializationError("unsupported TileDef version");
 125         name = deSerializeString(is);
 126         animation.type = (TileAnimationType)readU8(is);
 127         animation.aspect_w = readU16(is);
 128         animation.aspect_h = readU16(is);
 129         animation.length = readF1000(is);
 130 }
 131
 132 /*
 133         SimpleSoundSpec serialization
 134 */
 135
 136 static void serializeSimpleSoundSpec(const SimpleSoundSpec &ss,
 137                 std::ostream &os)
 138 {
 139         os<<serializeString(ss.name);
 140         writeF1000(os, ss.gain);
 141 }
 142 static void deSerializeSimpleSoundSpec(SimpleSoundSpec &ss, std::istream &is)
 143 {
 144         ss.name = deSerializeString(is);
 145         ss.gain = readF1000(is);
 146 }
 147
 148 /*
 149         ContentFeatures
 150 */
 151
 152 ContentFeatures::ContentFeatures()
 153 {
 154         reset();
 155 }
 156
 157 ContentFeatures::~ContentFeatures()
 158 {
 159 }
 160
 161 void ContentFeatures::reset()
 162 {
 163         /*
 164                 Cached stuff
 165         */
 166 #ifndef SERVER
 167         solidness = 2;
 168         visual_solidness = 0;
 169         backface_culling = true;
 170 #endif
 171         has_on_construct = false;
 172         has_on_destruct = false;
 173         has_after_destruct = false;
 174         /*
 175                 Actual data
 176
 177                 NOTE: Most of this is always overridden by the default values given
 178                       in builtin.lua
 179         */
 180         name = "";
 181         groups.clear();
 182         // Unknown nodes can be dug
 183         groups["dig_immediate"] = 2;
 184         drawtype = NDT_NORMAL;
 185         visual_scale = 1.0;
 186         for(u32 i=0; i<6; i++)
 187                 tiledef[i] = TileDef();
 188         for(u16 j=0; j<CF_SPECIAL_COUNT; j++)
 189                 tiledef_special[j] = TileDef();
 190         alpha = 255;
 191         post_effect_color = video::SColor(0, 0, 0, 0);
 192         param_type = CPT_NONE;
 193         param_type_2 = CPT2_NONE;
 194         is_ground_content = false;
 195         light_propagates = false;
 196         sunlight_propagates = false;
 197         walkable = true;
 198         pointable = true;
 199         diggable = true;
 200         climbable = false;
 201         buildable_to = false;
 202         liquid_type = LIQUID_NONE;
 203         liquid_alternative_flowing = "";
 204         liquid_alternative_source = "";
 205         liquid_viscosity = 0;
 206         liquid_renewable = true;
 207         light_source = 0;
 208         damage_per_second = 0;
 209         node_box = NodeBox();
 210         selection_box = NodeBox();
 211         legacy_facedir_simple = false;
 212         legacy_wallmounted = false;
 213         sound_footstep = SimpleSoundSpec();
 214         sound_dig = SimpleSoundSpec("__group");
 215         sound_dug = SimpleSoundSpec();
 216 }
 217
 218 void ContentFeatures::serialize(std::ostream &os)
 219 {
 220         writeU8(os, 5); // version
 221         os<<serializeString(name);
 222         writeU16(os, groups.size());
 223         for(ItemGroupList::const_iterator
 224                         i = groups.begin(); i != groups.end(); i++){
 225                 os<<serializeString(i->first);
 226                 writeS16(os, i->second);
 227         }
 228         writeU8(os, drawtype);
 229         writeF1000(os, visual_scale);
 230         writeU8(os, 6);
 231         for(u32 i=0; i<6; i++)
 232                 tiledef[i].serialize(os);
 233         writeU8(os, CF_SPECIAL_COUNT);
 234         for(u32 i=0; i<CF_SPECIAL_COUNT; i++){
 235                 tiledef_special[i].serialize(os);
 236         }
 237         writeU8(os, alpha);
 238         writeU8(os, post_effect_color.getAlpha());
 239         writeU8(os, post_effect_color.getRed());
 240         writeU8(os, post_effect_color.getGreen());
 241         writeU8(os, post_effect_color.getBlue());
 242         writeU8(os, param_type);
 243         writeU8(os, param_type_2);
 244         writeU8(os, is_ground_content);
 245         writeU8(os, light_propagates);
 246         writeU8(os, sunlight_propagates);
 247         writeU8(os, walkable);
 248         writeU8(os, pointable);
 249         writeU8(os, diggable);
 250         writeU8(os, climbable);
 251         writeU8(os, buildable_to);
 252         os<<serializeString(""); // legacy: used to be metadata_name
 253         writeU8(os, liquid_type);
 254         os<<serializeString(liquid_alternative_flowing);
 255         os<<serializeString(liquid_alternative_source);
 256         writeU8(os, liquid_viscosity);
 257         writeU8(os, liquid_renewable);
 258         writeU8(os, light_source);
 259         writeU32(os, damage_per_second);
 260         node_box.serialize(os);
 261         selection_box.serialize(os);
 262         writeU8(os, legacy_facedir_simple);
 263         writeU8(os, legacy_wallmounted);
 264         serializeSimpleSoundSpec(sound_footstep, os);
 265         serializeSimpleSoundSpec(sound_dig, os);
 266         serializeSimpleSoundSpec(sound_dug, os);
 267         // Stuff below should be moved to correct place in a version that otherwise changes
 268         // the protocol version
 269         writeU8(os, liquid_renewable);
 270 }
 271
 272 void ContentFeatures::deSerialize(std::istream &is)
 273 {
 274         int version = readU8(is);
 275         if(version != 5)
 276                 throw SerializationError("unsupported ContentFeatures version");
 277         name = deSerializeString(is);
 278         groups.clear();
 279         u32 groups_size = readU16(is);
 280         for(u32 i=0; i<groups_size; i++){
 281                 std::string name = deSerializeString(is);
 282                 int value = readS16(is);
 283                 groups[name] = value;
 284         }
 285         drawtype = (enum NodeDrawType)readU8(is);
 286         visual_scale = readF1000(is);
 287         if(readU8(is) != 6)
 288                 throw SerializationError("unsupported tile count");
 289         for(u32 i=0; i<6; i++)
 290                 tiledef[i].deSerialize(is);
 291         if(readU8(is) != CF_SPECIAL_COUNT)
 292                 throw SerializationError("unsupported CF_SPECIAL_COUNT");
 293         for(u32 i=0; i<CF_SPECIAL_COUNT; i++)
 294                 tiledef_special[i].deSerialize(is);
 295         alpha = readU8(is);
 296         post_effect_color.setAlpha(readU8(is));
 297         post_effect_color.setRed(readU8(is));
 298         post_effect_color.setGreen(readU8(is));
 299         post_effect_color.setBlue(readU8(is));
 300         param_type = (enum ContentParamType)readU8(is);
 301         param_type_2 = (enum ContentParamType2)readU8(is);
 302         is_ground_content = readU8(is);
 303         light_propagates = readU8(is);
 304         sunlight_propagates = readU8(is);
 305         walkable = readU8(is);
 306         pointable = readU8(is);
 307         diggable = readU8(is);
 308         climbable = readU8(is);
 309         buildable_to = readU8(is);
 310         deSerializeString(is); // legacy: used to be metadata_name
 311         liquid_type = (enum LiquidType)readU8(is);
 312         liquid_alternative_flowing = deSerializeString(is);
 313         liquid_alternative_source = deSerializeString(is);
 314         liquid_viscosity = readU8(is);
 315         liquid_renewable = readU8(is);
 316         light_source = readU8(is);
 317         damage_per_second = readU32(is);
 318         node_box.deSerialize(is);
 319         selection_box.deSerialize(is);
 320         legacy_facedir_simple = readU8(is);
 321         legacy_wallmounted = readU8(is);
 322         deSerializeSimpleSoundSpec(sound_footstep, is);
 323         deSerializeSimpleSoundSpec(sound_dig, is);
 324         deSerializeSimpleSoundSpec(sound_dug, is);
 325         // If you add anything here, insert it primarily inside the try-catch
 326         // block to not need to increase the version.
 327         try{
 328                 // Stuff below should be moved to correct place in a version that
 329                 // otherwise changes the protocol version
 330                 liquid_renewable = readU8(is);
 331         }catch(SerializationError &e) {};
 332 }
 333
 334 /*
 335         CNodeDefManager
 336 */
 337
 338 class CNodeDefManager: public IWritableNodeDefManager
 339 {
 340 public:
 341         void clear()
 342         {
 343                 m_name_id_mapping.clear();
 344                 m_name_id_mapping_with_aliases.clear();
 345
 346                 for(u16 i=0; i<=MAX_CONTENT; i++)
 347                 {
 348                         ContentFeatures &f = m_content_features[i];
 349                         f.reset(); // Reset to defaults
 350                 }
 351
 352                 // Set CONTENT_AIR
 353                 {
 354                         ContentFeatures f;
 355                         f.name = "air";
 356                         f.drawtype = NDT_AIRLIKE;
 357                         f.param_type = CPT_LIGHT;
 358                         f.light_propagates = true;
 359                         f.sunlight_propagates = true;
 360                         f.walkable = false;
 361                         f.pointable = false;
 362                         f.diggable = false;
 363                         f.buildable_to = true;
 364                         // Insert directly into containers
 365                         content_t c = CONTENT_AIR;
 366                         m_content_features[c] = f;
 367                         addNameIdMapping(c, f.name);
 368                 }
 369                 // Set CONTENT_IGNORE
 370                 {
 371                         ContentFeatures f;
 372                         f.name = "ignore";
 373                         f.drawtype = NDT_AIRLIKE;
 374                         f.param_type = CPT_NONE;
 375                         f.light_propagates = false;
 376                         f.sunlight_propagates = false;
 377                         f.walkable = false;
 378                         f.pointable = false;
 379                         f.diggable = false;
 380                         // A way to remove accidental CONTENT_IGNOREs
 381                         f.buildable_to = true;
 382                         // Insert directly into containers
 383                         content_t c = CONTENT_IGNORE;
 384                         m_content_features[c] = f;
 385                         addNameIdMapping(c, f.name);
 386                 }
 387         }
 388         // CONTENT_IGNORE = not found
 389         content_t getFreeId()
 390         {
 391                 for(u32 i=0; i<=0xffff; i++){
 392                         const ContentFeatures &f = m_content_features[i];
 393                         if(f.name == "")
 394                                 return i;
 395                 }
 396                 return CONTENT_IGNORE;
 397         }
 398         CNodeDefManager()
 399         {
 400                 clear();
 401         }
 402         virtual ~CNodeDefManager()
 403         {
 404         }
 405         virtual IWritableNodeDefManager* clone()
 406         {
 407                 CNodeDefManager *mgr = new CNodeDefManager();
 408                 for(u16 i=0; i<=MAX_CONTENT; i++)
 409                 {
 410                         mgr->set(i, get(i));
 411                 }
 412                 return mgr;
 413         }
 414         virtual const ContentFeatures& get(content_t c) const
 415         {
 416                 assert(c <= MAX_CONTENT);
 417                 return m_content_features[c];
 418         }
 419         virtual const ContentFeatures& get(const MapNode &n) const
 420         {
 421                 return get(n.getContent());
 422         }
 423         virtual bool getId(const std::string &name, content_t &result) const
 424         {
 425                 std::map<std::string, content_t>::const_iterator
 426                         i = m_name_id_mapping_with_aliases.find(name);
 427                 if(i == m_name_id_mapping_with_aliases.end())
 428                         return false;
 429                 result = i->second;
 430                 return true;
 431         }
 432         virtual content_t getId(const std::string &name) const
 433         {
 434                 content_t id = CONTENT_IGNORE;
 435                 getId(name, id);
 436                 return id;
 437         }
 438         virtual void getIds(const std::string &name, std::set<content_t> &result)
 439                         const
 440         {
 441                 if(name.substr(0,6) != "group:"){
 442                         content_t id = CONTENT_IGNORE;
 443                         if(getId(name, id))
 444                                 result.insert(id);
 445                         return;
 446                 }
 447                 std::string group = name.substr(6);
 448                 for(u16 id=0; id<=MAX_CONTENT; id++)
 449                 {
 450                         const ContentFeatures &f = m_content_features[id];
 451                         if(f.name == "") // Quickly discard undefined nodes
 452                                 continue;
 453                         if(itemgroup_get(f.groups, group) != 0)
 454                                 result.insert(id);
 455                 }
 456         }
 457         virtual const ContentFeatures& get(const std::string &name) const
 458         {
 459                 content_t id = CONTENT_IGNORE;
 460                 getId(name, id);
 461                 return get(id);
 462         }
 463         // IWritableNodeDefManager
 464         virtual void set(content_t c, const ContentFeatures &def)
 465         {
 466                 verbosestream<<"registerNode: registering content id \""<<c
 467                                 <<"\": name=\""<<def.name<<"\""<<std::endl;
 468                 assert(c <= MAX_CONTENT);
 469                 // Don't allow redefining CONTENT_IGNORE (but allow air)
 470                 if(def.name == "ignore" || c == CONTENT_IGNORE){
 471                         infostream<<"registerNode: WARNING: Ignoring "
 472                                         <<"CONTENT_IGNORE redefinition"<<std::endl;
 473                         return;
 474                 }
 475                 // Check that the special contents are not redefined as different id
 476                 // because it would mess up everything
 477                 if((def.name == "ignore" && c != CONTENT_IGNORE) ||
 478                         (def.name == "air" && c != CONTENT_AIR)){
 479                         errorstream<<"registerNode: IGNORING ERROR: "
 480                                         <<"trying to register built-in type \""
 481                                         <<def.name<<"\" as different id"<<std::endl;
 482                         return;
 483                 }
 484                 m_content_features[c] = def;
 485                 if(def.name != "")
 486                         addNameIdMapping(c, def.name);
 487         }
 488         virtual content_t set(const std::string &name,
 489                         const ContentFeatures &def)
 490         {
 491                 assert(name == def.name);
 492                 u16 id = CONTENT_IGNORE;
 493                 bool found = m_name_id_mapping.getId(name, id);  // ignore aliases
 494                 if(!found){
 495                         // Get some id
 496                         id = getFreeId();
 497                         if(id == CONTENT_IGNORE)
 498                                 return CONTENT_IGNORE;
 499                         if(name != "")
 500                                 addNameIdMapping(id, name);
 501                 }
 502                 set(id, def);
 503                 return id;
 504         }
 505         virtual content_t allocateDummy(const std::string &name)
 506         {
 507                 assert(name != "");
 508                 ContentFeatures f;
 509                 f.name = name;
 510                 return set(name, f);
 511         }
 512         virtual void updateAliases(IItemDefManager *idef)
 513         {
 514                 std::set<std::string> all = idef->getAll();
 515                 m_name_id_mapping_with_aliases.clear();
 516                 for(std::set<std::string>::iterator
 517                                 i = all.begin(); i != all.end(); i++)
 518                 {
 519                         std::string name = *i;
 520                         std::string convert_to = idef->getAlias(name);
 521                         content_t id;
 522                         if(m_name_id_mapping.getId(convert_to, id))
 523                         {
 524                                 m_name_id_mapping_with_aliases.insert(
 525                                                 std::make_pair(name, id));
 526                         }
 527                 }
 528         }
 529         virtual void updateTextures(ITextureSource *tsrc)
 530         {
 531 #ifndef SERVER
 532                 infostream<<"CNodeDefManager::updateTextures(): Updating "
 533                                 <<"textures in node definitions"<<std::endl;
 534
 535                 bool new_style_water = g_settings->getBool("new_style_water");
 536                 bool new_style_leaves = g_settings->getBool("new_style_leaves");
 537                 bool opaque_water = g_settings->getBool("opaque_water");
 538
 539                 for(u16 i=0; i<=MAX_CONTENT; i++)
 540                 {
 541                         ContentFeatures *f = &m_content_features[i];
 542
 543                         // Figure out the actual tiles to use
 544                         TileDef tiledef[6];
 545                         for(u32 j=0; j<6; j++)
 546                         {
 547                                 tiledef[j] = f->tiledef[j];
 548                                 if(tiledef[j].name == "")
 549                                         tiledef[j].name = "unknown_block.png";
 550                         }
 551
 552                         switch(f->drawtype){
 553                         default:
 554                         case NDT_NORMAL:
 555                                 f->solidness = 2;
 556                                 break;
 557                         case NDT_AIRLIKE:
 558                                 f->solidness = 0;
 559                                 break;
 560                         case NDT_LIQUID:
 561                                 assert(f->liquid_type == LIQUID_SOURCE);
 562                                 if(opaque_water)
 563                                         f->alpha = 255;
 564                                 if(new_style_water){
 565                                         f->solidness = 0;
 566                                 } else {
 567                                         f->solidness = 1;
 568                                         f->backface_culling = false;
 569                                 }
 570                                 break;
 571                         case NDT_FLOWINGLIQUID:
 572                                 assert(f->liquid_type == LIQUID_FLOWING);
 573                                 f->solidness = 0;
 574                                 if(opaque_water)
 575                                         f->alpha = 255;
 576                                 break;
 577                         case NDT_GLASSLIKE:
 578                                 f->solidness = 0;
 579                                 f->visual_solidness = 1;
 580                                 break;
 581                         case NDT_ALLFACES:
 582                                 f->solidness = 0;
 583                                 f->visual_solidness = 1;
 584                                 break;
 585                         case NDT_ALLFACES_OPTIONAL:
 586                                 if(new_style_leaves){
 587                                         f->drawtype = NDT_ALLFACES;
 588                                         f->solidness = 0;
 589                                         f->visual_solidness = 1;
 590                                 } else {
 591                                         f->drawtype = NDT_NORMAL;
 592                                         f->solidness = 2;
 593                                         for(u32 i=0; i<6; i++){
 594                                                 tiledef[i].name += std::string("^[noalpha");
 595                                         }
 596                                 }
 597                                 break;
 598                         case NDT_TORCHLIKE:
 599                         case NDT_SIGNLIKE:
 600                         case NDT_PLANTLIKE:
 601                         case NDT_FENCELIKE:
 602                         case NDT_RAILLIKE:
 603                         case NDT_NODEBOX:
 604                                 f->solidness = 0;
 605                                 break;
 606                         }
 607
 608                         // Tiles (fill in f->tiles[])
 609                         for(u16 j=0; j<6; j++){
 610                                 // Texture
 611                                 f->tiles[j].texture = tsrc->getTexture(tiledef[j].name);
 612                                 // Alpha
 613                                 f->tiles[j].alpha = f->alpha;
 614                                 if(f->alpha == 255)
 615                                         f->tiles[j].material_type = MATERIAL_ALPHA_SIMPLE;
 616                                 else
 617                                         f->tiles[j].material_type = MATERIAL_ALPHA_VERTEX;
 618                                 // Material flags
 619                                 f->tiles[j].material_flags = 0;
 620                                 if(f->backface_culling)
 621                                         f->tiles[j].material_flags |= MATERIAL_FLAG_BACKFACE_CULLING;
 622                                 if(tiledef[j].animation.type == TAT_VERTICAL_FRAMES)
 623                                         f->tiles[j].material_flags |= MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
 624                                 // Animation parameters
 625                                 if(f->tiles[j].material_flags &
 626                                                 MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES)
 627                                 {
 628                                         // Get raw texture size to determine frame count by
 629                                         // aspect ratio
 630                                         video::ITexture *t = tsrc->getTextureRaw(tiledef[j].name);
 631                                         v2u32 size = t->getOriginalSize();
 632                                         int frame_height = (float)size.X /
 633                                                         (float)tiledef[j].animation.aspect_w *
 634                                                         (float)tiledef[j].animation.aspect_h;
 635                                         int frame_count = size.Y / frame_height;
 636                                         int frame_length_ms = 1000.0 *
 637                                                         tiledef[j].animation.length / frame_count;
 638                                         f->tiles[j].animation_frame_count = frame_count;
 639                                         f->tiles[j].animation_frame_length_ms = frame_length_ms;
 640
 641                                         // If there are no frames for an animation, switch
 642                                         // animation off (so that having specified an animation
 643                                         // for something but not using it in the texture pack
 644                                         // gives no overhead)
 645                                         if(frame_count == 1){
 646                                                 f->tiles[j].material_flags &=
 647                                                                 ~MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
 648                                         }
 649                                 }
 650                         }
 651                         // Special tiles (fill in f->special_tiles[])
 652                         for(u16 j=0; j<CF_SPECIAL_COUNT; j++){
 653                                 // Texture
 654                                 f->special_tiles[j].texture =
 655                                                 tsrc->getTexture(f->tiledef_special[j].name);
 656                                 // Alpha
 657                                 f->special_tiles[j].alpha = f->alpha;
 658                                 if(f->alpha == 255)
 659                                         f->special_tiles[j].material_type = MATERIAL_ALPHA_SIMPLE;
 660                                 else
 661                                         f->special_tiles[j].material_type = MATERIAL_ALPHA_VERTEX;
 662                                 // Material flags
 663                                 f->special_tiles[j].material_flags = 0;
 664                                 if(f->tiledef_special[j].backface_culling)
 665                                         f->special_tiles[j].material_flags |= MATERIAL_FLAG_BACKFACE_CULLING;
 666                                 if(f->tiledef_special[j].animation.type == TAT_VERTICAL_FRAMES)
 667                                         f->special_tiles[j].material_flags |= MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
 668                                 // Animation parameters
 669                                 if(f->special_tiles[j].material_flags &
 670                                                 MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES)
 671                                 {
 672                                         // Get raw texture size to determine frame count by
 673                                         // aspect ratio
 674                                         video::ITexture *t = tsrc->getTextureRaw(f->tiledef_special[j].name);
 675                                         v2u32 size = t->getOriginalSize();
 676                                         int frame_height = (float)size.X /
 677                                                         (float)f->tiledef_special[j].animation.aspect_w *
 678                                                         (float)f->tiledef_special[j].animation.aspect_h;
 679                                         int frame_count = size.Y / frame_height;
 680                                         int frame_length_ms = 1000.0 *
 681                                                         f->tiledef_special[j].animation.length / frame_count;
 682                                         f->special_tiles[j].animation_frame_count = frame_count;
 683                                         f->special_tiles[j].animation_frame_length_ms = frame_length_ms;
 684
 685                                         // If there are no frames for an animation, switch
 686                                         // animation off (so that having specified an animation
 687                                         // for something but not using it in the texture pack
 688                                         // gives no overhead)
 689                                         if(frame_count == 1){
 690                                                 f->special_tiles[j].material_flags &=
 691                                                                 ~MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
 692                                         }
 693                                 }
 694                         }
 695                 }
 696 #endif
 697         }
 698         void serialize(std::ostream &os)
 699         {
 700                 writeU8(os, 1); // version
 701                 u16 count = 0;
 702                 std::ostringstream os2(std::ios::binary);
 703                 for(u16 i=0; i<=MAX_CONTENT; i++)
 704                 {
 705                         if(i == CONTENT_IGNORE || i == CONTENT_AIR)
 706                                 continue;
 707                         ContentFeatures *f = &m_content_features[i];
 708                         if(f->name == "")
 709                                 continue;
 710                         writeU16(os2, i);
 711                         // Wrap it in a string to allow different lengths without
 712                         // strict version incompatibilities
 713                         std::ostringstream wrapper_os(std::ios::binary);
 714                         f->serialize(wrapper_os);
 715                         os2<<serializeString(wrapper_os.str());
 716                         count++;
 717                 }
 718                 writeU16(os, count);
 719                 os<<serializeLongString(os2.str());
 720         }
 721         void deSerialize(std::istream &is)
 722         {
 723                 clear();
 724                 int version = readU8(is);
 725                 if(version != 1)
 726                         throw SerializationError("unsupported NodeDefinitionManager version");
 727                 u16 count = readU16(is);
 728                 std::istringstream is2(deSerializeLongString(is), std::ios::binary);
 729                 for(u16 n=0; n<count; n++){
 730                         u16 i = readU16(is2);
 731                         if(i > MAX_CONTENT){
 732                                 errorstream<<"ContentFeatures::deSerialize(): "
 733                                                 <<"Too large content id: "<<i<<std::endl;
 734                                 continue;
 735                         }
 736                         /*// Do not deserialize special types
 737                         if(i == CONTENT_IGNORE || i == CONTENT_AIR)
 738                                 continue;*/
 739                         ContentFeatures *f = &m_content_features[i];
 740                         // Read it from the string wrapper
 741                         std::string wrapper = deSerializeString(is2);
 742                         std::istringstream wrapper_is(wrapper, std::ios::binary);
 743                         f->deSerialize(wrapper_is);
 744                         verbosestream<<"deserialized "<<f->name<<std::endl;
 745                         if(f->name != "")
 746                                 addNameIdMapping(i, f->name);
 747                 }
 748         }
 749 private:
 750         void addNameIdMapping(content_t i, std::string name)
 751         {
 752                 m_name_id_mapping.set(i, name);
 753                 m_name_id_mapping_with_aliases.insert(std::make_pair(name, i));
 754         }
 755 private:
 756         // Features indexed by id
 757         ContentFeatures m_content_features[MAX_CONTENT+1];
 758         // A mapping for fast converting back and forth between names and ids
 759         NameIdMapping m_name_id_mapping;
 760         // Like m_name_id_mapping, but only from names to ids, and includes
 761         // item aliases too. Updated by updateAliases()
 762         // Note: Not serialized.
 763         std::map<std::string, content_t> m_name_id_mapping_with_aliases;
 764 };
 765
 766 IWritableNodeDefManager* createNodeDefManager()
 767 {
 768         return new CNodeDefManager();
 769 }
 770