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
  31 /*
  32         NodeBox
  33 */
  34
  35 void NodeBox::serialize(std::ostream &os) const
  36 {
  37         writeU8(os, 0); // version
  38         writeU8(os, type);
  39         writeV3F1000(os, fixed.MinEdge);
  40         writeV3F1000(os, fixed.MaxEdge);
  41         writeV3F1000(os, wall_top.MinEdge);
  42         writeV3F1000(os, wall_top.MaxEdge);
  43         writeV3F1000(os, wall_bottom.MinEdge);
  44         writeV3F1000(os, wall_bottom.MaxEdge);
  45         writeV3F1000(os, wall_side.MinEdge);
  46         writeV3F1000(os, wall_side.MaxEdge);
  47 }
  48
  49 void NodeBox::deSerialize(std::istream &is)
  50 {
  51         int version = readU8(is);
  52         if(version != 0)
  53                 throw SerializationError("unsupported NodeBox version");
  54         type = (enum NodeBoxType)readU8(is);
  55         fixed.MinEdge = readV3F1000(is);
  56         fixed.MaxEdge = readV3F1000(is);
  57         wall_top.MinEdge = readV3F1000(is);
  58         wall_top.MaxEdge = readV3F1000(is);
  59         wall_bottom.MinEdge = readV3F1000(is);
  60         wall_bottom.MaxEdge = readV3F1000(is);
  61         wall_side.MinEdge = readV3F1000(is);
  62         wall_side.MaxEdge = readV3F1000(is);
  63 }
  64
  65 /*
  66         TileDef
  67 */
  68
  69 void TileDef::serialize(std::ostream &os) const
  70 {
  71         writeU8(os, 0); // version
  72         os<<serializeString(name);
  73         writeU8(os, animation.type);
  74         writeU16(os, animation.aspect_w);
  75         writeU16(os, animation.aspect_h);
  76         writeF1000(os, animation.length);
  77 }
  78
  79 void TileDef::deSerialize(std::istream &is)
  80 {
  81         int version = readU8(is);
  82         if(version != 0)
  83                 throw SerializationError("unsupported TileDef version");
  84         name = deSerializeString(is);
  85         animation.type = (TileAnimationType)readU8(is);
  86         animation.aspect_w = readU16(is);
  87         animation.aspect_h = readU16(is);
  88         animation.length = readF1000(is);
  89 }
  90
  91 /*
  92         SimpleSoundSpec serialization
  93 */
  94
  95 static void serializeSimpleSoundSpec(const SimpleSoundSpec &ss,
  96                 std::ostream &os)
  97 {
  98         os<<serializeString(ss.name);
  99         writeF1000(os, ss.gain);
 100 }
 101 static void deSerializeSimpleSoundSpec(SimpleSoundSpec &ss, std::istream &is)
 102 {
 103         ss.name = deSerializeString(is);
 104         ss.gain = readF1000(is);
 105 }
 106
 107 /*
 108         ContentFeatures
 109 */
 110
 111 ContentFeatures::ContentFeatures()
 112 {
 113         reset();
 114 }
 115
 116 ContentFeatures::~ContentFeatures()
 117 {
 118 }
 119
 120 void ContentFeatures::reset()
 121 {
 122         /*
 123                 Cached stuff
 124         */
 125 #ifndef SERVER
 126         solidness = 2;
 127         visual_solidness = 0;
 128         backface_culling = true;
 129 #endif
 130         has_on_construct = false;
 131         has_on_destruct = false;
 132         has_after_destruct = false;
 133         /*
 134                 Actual data
 135
 136                 NOTE: Most of this is always overridden by the default values given
 137                       in builtin.lua
 138         */
 139         name = "";
 140         groups.clear();
 141         // Unknown nodes can be dug
 142         groups["dig_immediate"] = 2;
 143         drawtype = NDT_NORMAL;
 144         visual_scale = 1.0;
 145         for(u32 i=0; i<6; i++)
 146                 tiledef[i] = TileDef();
 147         for(u16 j=0; j<CF_SPECIAL_COUNT; j++)
 148                 tiledef_special[j] = TileDef();
 149         alpha = 255;
 150         post_effect_color = video::SColor(0, 0, 0, 0);
 151         param_type = CPT_NONE;
 152         param_type_2 = CPT2_NONE;
 153         is_ground_content = false;
 154         light_propagates = false;
 155         sunlight_propagates = false;
 156         walkable = true;
 157         pointable = true;
 158         diggable = true;
 159         climbable = false;
 160         buildable_to = false;
 161         liquid_type = LIQUID_NONE;
 162         liquid_alternative_flowing = "";
 163         liquid_alternative_source = "";
 164         liquid_viscosity = 0;
 165         light_source = 0;
 166         damage_per_second = 0;
 167         selection_box = NodeBox();
 168         legacy_facedir_simple = false;
 169         legacy_wallmounted = false;
 170         sound_footstep = SimpleSoundSpec();
 171         sound_dig = SimpleSoundSpec("__group");
 172         sound_dug = SimpleSoundSpec();
 173 }
 174
 175 void ContentFeatures::serialize(std::ostream &os)
 176 {
 177         writeU8(os, 4); // version
 178         os<<serializeString(name);
 179         writeU16(os, groups.size());
 180         for(ItemGroupList::const_iterator
 181                         i = groups.begin(); i != groups.end(); i++){
 182                 os<<serializeString(i->first);
 183                 writeS16(os, i->second);
 184         }
 185         writeU8(os, drawtype);
 186         writeF1000(os, visual_scale);
 187         writeU8(os, 6);
 188         for(u32 i=0; i<6; i++)
 189                 tiledef[i].serialize(os);
 190         writeU8(os, CF_SPECIAL_COUNT);
 191         for(u32 i=0; i<CF_SPECIAL_COUNT; i++){
 192                 tiledef_special[i].serialize(os);
 193         }
 194         writeU8(os, alpha);
 195         writeU8(os, post_effect_color.getAlpha());
 196         writeU8(os, post_effect_color.getRed());
 197         writeU8(os, post_effect_color.getGreen());
 198         writeU8(os, post_effect_color.getBlue());
 199         writeU8(os, param_type);
 200         writeU8(os, param_type_2);
 201         writeU8(os, is_ground_content);
 202         writeU8(os, light_propagates);
 203         writeU8(os, sunlight_propagates);
 204         writeU8(os, walkable);
 205         writeU8(os, pointable);
 206         writeU8(os, diggable);
 207         writeU8(os, climbable);
 208         writeU8(os, buildable_to);
 209         os<<serializeString(""); // legacy: used to be metadata_name
 210         writeU8(os, liquid_type);
 211         os<<serializeString(liquid_alternative_flowing);
 212         os<<serializeString(liquid_alternative_source);
 213         writeU8(os, liquid_viscosity);
 214         writeU8(os, light_source);
 215         writeU32(os, damage_per_second);
 216         selection_box.serialize(os);
 217         writeU8(os, legacy_facedir_simple);
 218         writeU8(os, legacy_wallmounted);
 219         serializeSimpleSoundSpec(sound_footstep, os);
 220         serializeSimpleSoundSpec(sound_dig, os);
 221         serializeSimpleSoundSpec(sound_dug, os);
 222 }
 223
 224 void ContentFeatures::deSerialize(std::istream &is)
 225 {
 226         int version = readU8(is);
 227         if(version != 4 && version != 3)
 228                 throw SerializationError("unsupported ContentFeatures version");
 229         name = deSerializeString(is);
 230         groups.clear();
 231         u32 groups_size = readU16(is);
 232         for(u32 i=0; i<groups_size; i++){
 233                 std::string name = deSerializeString(is);
 234                 int value = readS16(is);
 235                 groups[name] = value;
 236         }
 237         drawtype = (enum NodeDrawType)readU8(is);
 238         visual_scale = readF1000(is);
 239         if(readU8(is) != 6)
 240                 throw SerializationError("unsupported tile count");
 241         for(u32 i=0; i<6; i++){
 242                 if(version == 4)
 243                         tiledef[i].deSerialize(is);
 244                 else if(version == 3) // Allow connecting to older servers
 245                         tiledef[i].name = deSerializeString(is);
 246         }
 247         if(readU8(is) != CF_SPECIAL_COUNT)
 248                 throw SerializationError("unsupported CF_SPECIAL_COUNT");
 249         for(u32 i=0; i<CF_SPECIAL_COUNT; i++){
 250                 if(version == 4){
 251                         tiledef_special[i].deSerialize(is);
 252                 } else if(version == 3){ // Allow connecting to older servers
 253                         tiledef_special[i].name = deSerializeString(is);
 254                         tiledef_special[i].backface_culling = readU8(is);
 255                 }
 256         }
 257         alpha = readU8(is);
 258         post_effect_color.setAlpha(readU8(is));
 259         post_effect_color.setRed(readU8(is));
 260         post_effect_color.setGreen(readU8(is));
 261         post_effect_color.setBlue(readU8(is));
 262         param_type = (enum ContentParamType)readU8(is);
 263         param_type_2 = (enum ContentParamType2)readU8(is);
 264         is_ground_content = readU8(is);
 265         light_propagates = readU8(is);
 266         sunlight_propagates = readU8(is);
 267         walkable = readU8(is);
 268         pointable = readU8(is);
 269         diggable = readU8(is);
 270         climbable = readU8(is);
 271         buildable_to = readU8(is);
 272         deSerializeString(is); // legacy: used to be metadata_name
 273         liquid_type = (enum LiquidType)readU8(is);
 274         liquid_alternative_flowing = deSerializeString(is);
 275         liquid_alternative_source = deSerializeString(is);
 276         liquid_viscosity = readU8(is);
 277         light_source = readU8(is);
 278         damage_per_second = readU32(is);
 279         selection_box.deSerialize(is);
 280         legacy_facedir_simple = readU8(is);
 281         legacy_wallmounted = readU8(is);
 282         deSerializeSimpleSoundSpec(sound_footstep, is);
 283         deSerializeSimpleSoundSpec(sound_dig, is);
 284         deSerializeSimpleSoundSpec(sound_dug, is);
 285         // If you add anything here, insert it primarily inside the try-catch
 286         // block to not need to increase the version.
 287         try{
 288         }catch(SerializationError &e) {};
 289 }
 290
 291 /*
 292         CNodeDefManager
 293 */
 294
 295 class CNodeDefManager: public IWritableNodeDefManager
 296 {
 297 public:
 298         void clear()
 299         {
 300                 m_name_id_mapping.clear();
 301                 m_name_id_mapping_with_aliases.clear();
 302
 303                 for(u16 i=0; i<=MAX_CONTENT; i++)
 304                 {
 305                         ContentFeatures &f = m_content_features[i];
 306                         f.reset(); // Reset to defaults
 307                 }
 308
 309                 // Set CONTENT_AIR
 310                 {
 311                         ContentFeatures f;
 312                         f.name = "air";
 313                         f.drawtype = NDT_AIRLIKE;
 314                         f.param_type = CPT_LIGHT;
 315                         f.light_propagates = true;
 316                         f.sunlight_propagates = true;
 317                         f.walkable = false;
 318                         f.pointable = false;
 319                         f.diggable = false;
 320                         f.buildable_to = true;
 321                         // Insert directly into containers
 322                         content_t c = CONTENT_AIR;
 323                         m_content_features[c] = f;
 324                         addNameIdMapping(c, f.name);
 325                 }
 326                 // Set CONTENT_IGNORE
 327                 {
 328                         ContentFeatures f;
 329                         f.name = "ignore";
 330                         f.drawtype = NDT_AIRLIKE;
 331                         f.param_type = CPT_NONE;
 332                         f.light_propagates = false;
 333                         f.sunlight_propagates = false;
 334                         f.walkable = false;
 335                         f.pointable = false;
 336                         f.diggable = false;
 337                         // A way to remove accidental CONTENT_IGNOREs
 338                         f.buildable_to = true;
 339                         // Insert directly into containers
 340                         content_t c = CONTENT_IGNORE;
 341                         m_content_features[c] = f;
 342                         addNameIdMapping(c, f.name);
 343                 }
 344         }
 345         // CONTENT_IGNORE = not found
 346         content_t getFreeId(bool require_full_param2)
 347         {
 348                 // If allowed, first search in the large 4-bit-param2 pool
 349                 if(!require_full_param2){
 350                         for(u16 i=0x800; i<=0xfff; i++){
 351                                 const ContentFeatures &f = m_content_features[i];
 352                                 if(f.name == "")
 353                                         return i;
 354                         }
 355                 }
 356                 // Then search from the small 8-bit-param2 pool
 357                 for(u16 i=0; i<=125; i++){
 358                         const ContentFeatures &f = m_content_features[i];
 359                         if(f.name == "")
 360                                 return i;
 361                 }
 362                 return CONTENT_IGNORE;
 363         }
 364         CNodeDefManager()
 365         {
 366                 clear();
 367         }
 368         virtual ~CNodeDefManager()
 369         {
 370         }
 371         virtual IWritableNodeDefManager* clone()
 372         {
 373                 CNodeDefManager *mgr = new CNodeDefManager();
 374                 for(u16 i=0; i<=MAX_CONTENT; i++)
 375                 {
 376                         mgr->set(i, get(i));
 377                 }
 378                 return mgr;
 379         }
 380         virtual const ContentFeatures& get(content_t c) const
 381         {
 382                 assert(c <= MAX_CONTENT);
 383                 return m_content_features[c];
 384         }
 385         virtual const ContentFeatures& get(const MapNode &n) const
 386         {
 387                 return get(n.getContent());
 388         }
 389         virtual bool getId(const std::string &name, content_t &result) const
 390         {
 391                 std::map<std::string, content_t>::const_iterator
 392                         i = m_name_id_mapping_with_aliases.find(name);
 393                 if(i == m_name_id_mapping_with_aliases.end())
 394                         return false;
 395                 result = i->second;
 396                 return true;
 397         }
 398         virtual content_t getId(const std::string &name) const
 399         {
 400                 content_t id = CONTENT_IGNORE;
 401                 getId(name, id);
 402                 return id;
 403         }
 404         virtual void getIds(const std::string &name, std::set<content_t> &result)
 405                         const
 406         {
 407                 if(name.substr(0,6) != "group:"){
 408                         content_t id = CONTENT_IGNORE;
 409                         if(getId(name, id))
 410                                 result.insert(id);
 411                         return;
 412                 }
 413                 std::string group = name.substr(6);
 414                 for(u16 id=0; id<=MAX_CONTENT; id++)
 415                 {
 416                         const ContentFeatures &f = m_content_features[id];
 417                         if(f.name == "") // Quickly discard undefined nodes
 418                                 continue;
 419                         if(itemgroup_get(f.groups, group) != 0)
 420                                 result.insert(id);
 421                 }
 422         }
 423         virtual const ContentFeatures& get(const std::string &name) const
 424         {
 425                 content_t id = CONTENT_IGNORE;
 426                 getId(name, id);
 427                 return get(id);
 428         }
 429         // IWritableNodeDefManager
 430         virtual void set(content_t c, const ContentFeatures &def)
 431         {
 432                 verbosestream<<"registerNode: registering content id \""<<c
 433                                 <<"\": name=\""<<def.name<<"\""<<std::endl;
 434                 assert(c <= MAX_CONTENT);
 435                 // Don't allow redefining CONTENT_IGNORE (but allow air)
 436                 if(def.name == "ignore" || c == CONTENT_IGNORE){
 437                         infostream<<"registerNode: WARNING: Ignoring "
 438                                         <<"CONTENT_IGNORE redefinition"<<std::endl;
 439                         return;
 440                 }
 441                 // Check that the special contents are not redefined as different id
 442                 // because it would mess up everything
 443                 if((def.name == "ignore" && c != CONTENT_IGNORE) ||
 444                         (def.name == "air" && c != CONTENT_AIR)){
 445                         errorstream<<"registerNode: IGNORING ERROR: "
 446                                         <<"trying to register built-in type \""
 447                                         <<def.name<<"\" as different id"<<std::endl;
 448                         return;
 449                 }
 450                 m_content_features[c] = def;
 451                 if(def.name != "")
 452                         addNameIdMapping(c, def.name);
 453         }
 454         virtual content_t set(const std::string &name,
 455                         const ContentFeatures &def)
 456         {
 457                 assert(name == def.name);
 458                 u16 id = CONTENT_IGNORE;
 459                 bool found = m_name_id_mapping.getId(name, id);  // ignore aliases
 460                 if(!found){
 461                         // Determine if full param2 is required
 462                         bool require_full_param2 = (
 463                                 def.param_type_2 == CPT2_FULL
 464                                 ||
 465                                 def.param_type_2 == CPT2_FLOWINGLIQUID
 466                                 ||
 467                                 def.legacy_wallmounted
 468                         );
 469                         // Get some id
 470                         id = getFreeId(require_full_param2);
 471                         if(id == CONTENT_IGNORE)
 472                                 return CONTENT_IGNORE;
 473                         if(name != "")
 474                                 addNameIdMapping(id, name);
 475                 }
 476                 set(id, def);
 477                 return id;
 478         }
 479         virtual content_t allocateDummy(const std::string &name)
 480         {
 481                 assert(name != "");
 482                 ContentFeatures f;
 483                 f.name = name;
 484                 return set(name, f);
 485         }
 486         virtual void updateAliases(IItemDefManager *idef)
 487         {
 488                 std::set<std::string> all = idef->getAll();
 489                 m_name_id_mapping_with_aliases.clear();
 490                 for(std::set<std::string>::iterator
 491                                 i = all.begin(); i != all.end(); i++)
 492                 {
 493                         std::string name = *i;
 494                         std::string convert_to = idef->getAlias(name);
 495                         content_t id;
 496                         if(m_name_id_mapping.getId(convert_to, id))
 497                         {
 498                                 m_name_id_mapping_with_aliases.insert(
 499                                                 std::make_pair(name, id));
 500                         }
 501                 }
 502         }
 503         virtual void updateTextures(ITextureSource *tsrc)
 504         {
 505 #ifndef SERVER
 506                 infostream<<"CNodeDefManager::updateTextures(): Updating "
 507                                 <<"textures in node definitions"<<std::endl;
 508
 509                 bool new_style_water = g_settings->getBool("new_style_water");
 510                 bool new_style_leaves = g_settings->getBool("new_style_leaves");
 511                 bool opaque_water = g_settings->getBool("opaque_water");
 512
 513                 for(u16 i=0; i<=MAX_CONTENT; i++)
 514                 {
 515                         ContentFeatures *f = &m_content_features[i];
 516
 517                         // Figure out the actual tiles to use
 518                         TileDef tiledef[6];
 519                         for(u32 j=0; j<6; j++)
 520                         {
 521                                 tiledef[j] = f->tiledef[j];
 522                                 if(tiledef[j].name == "")
 523                                         tiledef[j].name = "unknown_block.png";
 524                         }
 525
 526                         switch(f->drawtype){
 527                         default:
 528                         case NDT_NORMAL:
 529                                 f->solidness = 2;
 530                                 break;
 531                         case NDT_AIRLIKE:
 532                                 f->solidness = 0;
 533                                 break;
 534                         case NDT_LIQUID:
 535                                 assert(f->liquid_type == LIQUID_SOURCE);
 536                                 if(opaque_water)
 537                                         f->alpha = 255;
 538                                 if(new_style_water){
 539                                         f->solidness = 0;
 540                                 } else {
 541                                         f->solidness = 1;
 542                                         if(f->alpha == 255)
 543                                                 f->solidness = 2;
 544                                         f->backface_culling = false;
 545                                 }
 546                                 break;
 547                         case NDT_FLOWINGLIQUID:
 548                                 assert(f->liquid_type == LIQUID_FLOWING);
 549                                 f->solidness = 0;
 550                                 if(opaque_water)
 551                                         f->alpha = 255;
 552                                 break;
 553                         case NDT_GLASSLIKE:
 554                                 f->solidness = 0;
 555                                 f->visual_solidness = 1;
 556                                 break;
 557                         case NDT_ALLFACES:
 558                                 f->solidness = 0;
 559                                 f->visual_solidness = 1;
 560                                 break;
 561                         case NDT_ALLFACES_OPTIONAL:
 562                                 if(new_style_leaves){
 563                                         f->drawtype = NDT_ALLFACES;
 564                                         f->solidness = 0;
 565                                         f->visual_solidness = 1;
 566                                 } else {
 567                                         f->drawtype = NDT_NORMAL;
 568                                         f->solidness = 2;
 569                                         for(u32 i=0; i<6; i++){
 570                                                 tiledef[i].name += std::string("^[noalpha");
 571                                         }
 572                                 }
 573                                 break;
 574                         case NDT_TORCHLIKE:
 575                         case NDT_SIGNLIKE:
 576                         case NDT_PLANTLIKE:
 577                         case NDT_FENCELIKE:
 578                         case NDT_RAILLIKE:
 579                                 f->solidness = 0;
 580                                 break;
 581                         }
 582
 583                         // Tiles (fill in f->tiles[])
 584                         for(u16 j=0; j<6; j++){
 585                                 // Texture
 586                                 f->tiles[j].texture = tsrc->getTexture(tiledef[j].name);
 587                                 // Alpha
 588                                 f->tiles[j].alpha = f->alpha;
 589                                 if(f->alpha == 255)
 590                                         f->tiles[j].material_type = MATERIAL_ALPHA_SIMPLE;
 591                                 else
 592                                         f->tiles[j].material_type = MATERIAL_ALPHA_VERTEX;
 593                                 // Material flags
 594                                 f->tiles[j].material_flags = 0;
 595                                 if(f->backface_culling)
 596                                         f->tiles[j].material_flags |= MATERIAL_FLAG_BACKFACE_CULLING;
 597                                 if(tiledef[j].animation.type == TAT_VERTICAL_FRAMES)
 598                                         f->tiles[j].material_flags |= MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
 599                                 // Animation parameters
 600                                 if(f->tiles[j].material_flags &
 601                                                 MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES)
 602                                 {
 603                                         // Get raw texture size to determine frame count by
 604                                         // aspect ratio
 605                                         video::ITexture *t = tsrc->getTextureRaw(tiledef[j].name);
 606                                         v2u32 size = t->getOriginalSize();
 607                                         int frame_height = (float)size.X /
 608                                                         (float)tiledef[j].animation.aspect_w *
 609                                                         (float)tiledef[j].animation.aspect_h;
 610                                         int frame_count = size.Y / frame_height;
 611                                         int frame_length_ms = 1000.0 *
 612                                                         tiledef[j].animation.length / frame_count;
 613                                         f->tiles[j].animation_frame_count = frame_count;
 614                                         f->tiles[j].animation_frame_length_ms = frame_length_ms;
 615
 616                                         // If there are no frames for an animation, switch
 617                                         // animation off (so that having specified an animation
 618                                         // for something but not using it in the texture pack
 619                                         // gives no overhead)
 620                                         if(frame_count == 1){
 621                                                 f->tiles[j].material_flags &=
 622                                                                 ~MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
 623                                         }
 624                                 }
 625                         }
 626                         // Special tiles (fill in f->special_tiles[])
 627                         for(u16 j=0; j<CF_SPECIAL_COUNT; j++){
 628                                 // Texture
 629                                 f->special_tiles[j].texture =
 630                                                 tsrc->getTexture(f->tiledef_special[j].name);
 631                                 // Alpha
 632                                 f->special_tiles[j].alpha = f->alpha;
 633                                 if(f->alpha == 255)
 634                                         f->special_tiles[j].material_type = MATERIAL_ALPHA_SIMPLE;
 635                                 else
 636                                         f->special_tiles[j].material_type = MATERIAL_ALPHA_VERTEX;
 637                                 // Material flags
 638                                 f->special_tiles[j].material_flags = 0;
 639                                 if(f->tiledef_special[j].backface_culling)
 640                                         f->special_tiles[j].material_flags |= MATERIAL_FLAG_BACKFACE_CULLING;
 641                                 if(f->tiledef_special[j].animation.type == TAT_VERTICAL_FRAMES)
 642                                         f->special_tiles[j].material_flags |= MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
 643                                 // Animation parameters
 644                                 if(f->special_tiles[j].material_flags &
 645                                                 MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES)
 646                                 {
 647                                         // Get raw texture size to determine frame count by
 648                                         // aspect ratio
 649                                         video::ITexture *t = tsrc->getTextureRaw(f->tiledef_special[j].name);
 650                                         v2u32 size = t->getOriginalSize();
 651                                         int frame_height = (float)size.X /
 652                                                         (float)f->tiledef_special[j].animation.aspect_w *
 653                                                         (float)f->tiledef_special[j].animation.aspect_h;
 654                                         int frame_count = size.Y / frame_height;
 655                                         int frame_length_ms = 1000.0 *
 656                                                         f->tiledef_special[j].animation.length / frame_count;
 657                                         f->special_tiles[j].animation_frame_count = frame_count;
 658                                         f->special_tiles[j].animation_frame_length_ms = frame_length_ms;
 659
 660                                         // If there are no frames for an animation, switch
 661                                         // animation off (so that having specified an animation
 662                                         // for something but not using it in the texture pack
 663                                         // gives no overhead)
 664                                         if(frame_count == 1){
 665                                                 f->special_tiles[j].material_flags &=
 666                                                                 ~MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
 667                                         }
 668                                 }
 669                         }
 670                 }
 671 #endif
 672         }
 673         void serialize(std::ostream &os)
 674         {
 675                 writeU8(os, 1); // version
 676                 u16 count = 0;
 677                 std::ostringstream os2(std::ios::binary);
 678                 for(u16 i=0; i<=MAX_CONTENT; i++)
 679                 {
 680                         if(i == CONTENT_IGNORE || i == CONTENT_AIR)
 681                                 continue;
 682                         ContentFeatures *f = &m_content_features[i];
 683                         if(f->name == "")
 684                                 continue;
 685                         writeU16(os2, i);
 686                         // Wrap it in a string to allow different lengths without
 687                         // strict version incompatibilities
 688                         std::ostringstream wrapper_os(std::ios::binary);
 689                         f->serialize(wrapper_os);
 690                         os2<<serializeString(wrapper_os.str());
 691                         count++;
 692                 }
 693                 writeU16(os, count);
 694                 os<<serializeLongString(os2.str());
 695         }
 696         void deSerialize(std::istream &is)
 697         {
 698                 clear();
 699                 int version = readU8(is);
 700                 if(version != 1)
 701                         throw SerializationError("unsupported NodeDefinitionManager version");
 702                 u16 count = readU16(is);
 703                 std::istringstream is2(deSerializeLongString(is), std::ios::binary);
 704                 for(u16 n=0; n<count; n++){
 705                         u16 i = readU16(is2);
 706                         if(i > MAX_CONTENT){
 707                                 errorstream<<"ContentFeatures::deSerialize(): "
 708                                                 <<"Too large content id: "<<i<<std::endl;
 709                                 continue;
 710                         }
 711                         /*// Do not deserialize special types
 712                         if(i == CONTENT_IGNORE || i == CONTENT_AIR)
 713                                 continue;*/
 714                         ContentFeatures *f = &m_content_features[i];
 715                         // Read it from the string wrapper
 716                         std::string wrapper = deSerializeString(is2);
 717                         std::istringstream wrapper_is(wrapper, std::ios::binary);
 718                         f->deSerialize(wrapper_is);
 719                         verbosestream<<"deserialized "<<f->name<<std::endl;
 720                         if(f->name != "")
 721                                 addNameIdMapping(i, f->name);
 722                 }
 723         }
 724 private:
 725         void addNameIdMapping(content_t i, std::string name)
 726         {
 727                 m_name_id_mapping.set(i, name);
 728                 m_name_id_mapping_with_aliases.insert(std::make_pair(name, i));
 729         }
 730 private:
 731         // Features indexed by id
 732         ContentFeatures m_content_features[MAX_CONTENT+1];
 733         // A mapping for fast converting back and forth between names and ids
 734         NameIdMapping m_name_id_mapping;
 735         // Like m_name_id_mapping, but only from names to ids, and includes
 736         // item aliases too. Updated by updateAliases()
 737         // Note: Not serialized.
 738         std::map<std::string, content_t> m_name_id_mapping_with_aliases;
 739 };
 740
 741 IWritableNodeDefManager* createNodeDefManager()
 742 {
 743         return new CNodeDefManager();
 744 }
 745