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         light_source = 0;
 207         damage_per_second = 0;
 208         node_box = NodeBox();
 209         selection_box = NodeBox();
 210         legacy_facedir_simple = false;
 211         legacy_wallmounted = false;
 212         sound_footstep = SimpleSoundSpec();
 213         sound_dig = SimpleSoundSpec("__group");
 214         sound_dug = SimpleSoundSpec();
 215 }
 216
 217 void ContentFeatures::serialize(std::ostream &os)
 218 {
 219         writeU8(os, 5); // version
 220         os<<serializeString(name);
 221         writeU16(os, groups.size());
 222         for(ItemGroupList::const_iterator
 223                         i = groups.begin(); i != groups.end(); i++){
 224                 os<<serializeString(i->first);
 225                 writeS16(os, i->second);
 226         }
 227         writeU8(os, drawtype);
 228         writeF1000(os, visual_scale);
 229         writeU8(os, 6);
 230         for(u32 i=0; i<6; i++)
 231                 tiledef[i].serialize(os);
 232         writeU8(os, CF_SPECIAL_COUNT);
 233         for(u32 i=0; i<CF_SPECIAL_COUNT; i++){
 234                 tiledef_special[i].serialize(os);
 235         }
 236         writeU8(os, alpha);
 237         writeU8(os, post_effect_color.getAlpha());
 238         writeU8(os, post_effect_color.getRed());
 239         writeU8(os, post_effect_color.getGreen());
 240         writeU8(os, post_effect_color.getBlue());
 241         writeU8(os, param_type);
 242         writeU8(os, param_type_2);
 243         writeU8(os, is_ground_content);
 244         writeU8(os, light_propagates);
 245         writeU8(os, sunlight_propagates);
 246         writeU8(os, walkable);
 247         writeU8(os, pointable);
 248         writeU8(os, diggable);
 249         writeU8(os, climbable);
 250         writeU8(os, buildable_to);
 251         os<<serializeString(""); // legacy: used to be metadata_name
 252         writeU8(os, liquid_type);
 253         os<<serializeString(liquid_alternative_flowing);
 254         os<<serializeString(liquid_alternative_source);
 255         writeU8(os, liquid_viscosity);
 256         writeU8(os, light_source);
 257         writeU32(os, damage_per_second);
 258         node_box.serialize(os);
 259         selection_box.serialize(os);
 260         writeU8(os, legacy_facedir_simple);
 261         writeU8(os, legacy_wallmounted);
 262         serializeSimpleSoundSpec(sound_footstep, os);
 263         serializeSimpleSoundSpec(sound_dig, os);
 264         serializeSimpleSoundSpec(sound_dug, os);
 265 }
 266
 267 void ContentFeatures::deSerialize(std::istream &is)
 268 {
 269         int version = readU8(is);
 270         if(version != 5)
 271                 throw SerializationError("unsupported ContentFeatures version");
 272         name = deSerializeString(is);
 273         groups.clear();
 274         u32 groups_size = readU16(is);
 275         for(u32 i=0; i<groups_size; i++){
 276                 std::string name = deSerializeString(is);
 277                 int value = readS16(is);
 278                 groups[name] = value;
 279         }
 280         drawtype = (enum NodeDrawType)readU8(is);
 281         visual_scale = readF1000(is);
 282         if(readU8(is) != 6)
 283                 throw SerializationError("unsupported tile count");
 284         for(u32 i=0; i<6; i++)
 285                 tiledef[i].deSerialize(is);
 286         if(readU8(is) != CF_SPECIAL_COUNT)
 287                 throw SerializationError("unsupported CF_SPECIAL_COUNT");
 288         for(u32 i=0; i<CF_SPECIAL_COUNT; i++)
 289                 tiledef_special[i].deSerialize(is);
 290         alpha = readU8(is);
 291         post_effect_color.setAlpha(readU8(is));
 292         post_effect_color.setRed(readU8(is));
 293         post_effect_color.setGreen(readU8(is));
 294         post_effect_color.setBlue(readU8(is));
 295         param_type = (enum ContentParamType)readU8(is);
 296         param_type_2 = (enum ContentParamType2)readU8(is);
 297         is_ground_content = readU8(is);
 298         light_propagates = readU8(is);
 299         sunlight_propagates = readU8(is);
 300         walkable = readU8(is);
 301         pointable = readU8(is);
 302         diggable = readU8(is);
 303         climbable = readU8(is);
 304         buildable_to = readU8(is);
 305         deSerializeString(is); // legacy: used to be metadata_name
 306         liquid_type = (enum LiquidType)readU8(is);
 307         liquid_alternative_flowing = deSerializeString(is);
 308         liquid_alternative_source = deSerializeString(is);
 309         liquid_viscosity = readU8(is);
 310         light_source = readU8(is);
 311         damage_per_second = readU32(is);
 312         node_box.deSerialize(is);
 313         selection_box.deSerialize(is);
 314         legacy_facedir_simple = readU8(is);
 315         legacy_wallmounted = readU8(is);
 316         deSerializeSimpleSoundSpec(sound_footstep, is);
 317         deSerializeSimpleSoundSpec(sound_dig, is);
 318         deSerializeSimpleSoundSpec(sound_dug, is);
 319         // If you add anything here, insert it primarily inside the try-catch
 320         // block to not need to increase the version.
 321         try{
 322         }catch(SerializationError &e) {};
 323 }
 324
 325 /*
 326         CNodeDefManager
 327 */
 328
 329 class CNodeDefManager: public IWritableNodeDefManager
 330 {
 331 public:
 332         void clear()
 333         {
 334                 m_name_id_mapping.clear();
 335                 m_name_id_mapping_with_aliases.clear();
 336
 337                 for(u16 i=0; i<=MAX_CONTENT; i++)
 338                 {
 339                         ContentFeatures &f = m_content_features[i];
 340                         f.reset(); // Reset to defaults
 341                 }
 342
 343                 // Set CONTENT_AIR
 344                 {
 345                         ContentFeatures f;
 346                         f.name = "air";
 347                         f.drawtype = NDT_AIRLIKE;
 348                         f.param_type = CPT_LIGHT;
 349                         f.light_propagates = true;
 350                         f.sunlight_propagates = true;
 351                         f.walkable = false;
 352                         f.pointable = false;
 353                         f.diggable = false;
 354                         f.buildable_to = true;
 355                         // Insert directly into containers
 356                         content_t c = CONTENT_AIR;
 357                         m_content_features[c] = f;
 358                         addNameIdMapping(c, f.name);
 359                 }
 360                 // Set CONTENT_IGNORE
 361                 {
 362                         ContentFeatures f;
 363                         f.name = "ignore";
 364                         f.drawtype = NDT_AIRLIKE;
 365                         f.param_type = CPT_NONE;
 366                         f.light_propagates = false;
 367                         f.sunlight_propagates = false;
 368                         f.walkable = false;
 369                         f.pointable = false;
 370                         f.diggable = false;
 371                         // A way to remove accidental CONTENT_IGNOREs
 372                         f.buildable_to = true;
 373                         // Insert directly into containers
 374                         content_t c = CONTENT_IGNORE;
 375                         m_content_features[c] = f;
 376                         addNameIdMapping(c, f.name);
 377                 }
 378         }
 379         // CONTENT_IGNORE = not found
 380         content_t getFreeId()
 381         {
 382                 for(u32 i=0; i<=0xffff; i++){
 383                         const ContentFeatures &f = m_content_features[i];
 384                         if(f.name == "")
 385                                 return i;
 386                 }
 387                 return CONTENT_IGNORE;
 388         }
 389         CNodeDefManager()
 390         {
 391                 clear();
 392         }
 393         virtual ~CNodeDefManager()
 394         {
 395         }
 396         virtual IWritableNodeDefManager* clone()
 397         {
 398                 CNodeDefManager *mgr = new CNodeDefManager();
 399                 for(u16 i=0; i<=MAX_CONTENT; i++)
 400                 {
 401                         mgr->set(i, get(i));
 402                 }
 403                 return mgr;
 404         }
 405         virtual const ContentFeatures& get(content_t c) const
 406         {
 407                 assert(c <= MAX_CONTENT);
 408                 return m_content_features[c];
 409         }
 410         virtual const ContentFeatures& get(const MapNode &n) const
 411         {
 412                 return get(n.getContent());
 413         }
 414         virtual bool getId(const std::string &name, content_t &result) const
 415         {
 416                 std::map<std::string, content_t>::const_iterator
 417                         i = m_name_id_mapping_with_aliases.find(name);
 418                 if(i == m_name_id_mapping_with_aliases.end())
 419                         return false;
 420                 result = i->second;
 421                 return true;
 422         }
 423         virtual content_t getId(const std::string &name) const
 424         {
 425                 content_t id = CONTENT_IGNORE;
 426                 getId(name, id);
 427                 return id;
 428         }
 429         virtual void getIds(const std::string &name, std::set<content_t> &result)
 430                         const
 431         {
 432                 if(name.substr(0,6) != "group:"){
 433                         content_t id = CONTENT_IGNORE;
 434                         if(getId(name, id))
 435                                 result.insert(id);
 436                         return;
 437                 }
 438                 std::string group = name.substr(6);
 439                 for(u16 id=0; id<=MAX_CONTENT; id++)
 440                 {
 441                         const ContentFeatures &f = m_content_features[id];
 442                         if(f.name == "") // Quickly discard undefined nodes
 443                                 continue;
 444                         if(itemgroup_get(f.groups, group) != 0)
 445                                 result.insert(id);
 446                 }
 447         }
 448         virtual const ContentFeatures& get(const std::string &name) const
 449         {
 450                 content_t id = CONTENT_IGNORE;
 451                 getId(name, id);
 452                 return get(id);
 453         }
 454         // IWritableNodeDefManager
 455         virtual void set(content_t c, const ContentFeatures &def)
 456         {
 457                 verbosestream<<"registerNode: registering content id \""<<c
 458                                 <<"\": name=\""<<def.name<<"\""<<std::endl;
 459                 assert(c <= MAX_CONTENT);
 460                 // Don't allow redefining CONTENT_IGNORE (but allow air)
 461                 if(def.name == "ignore" || c == CONTENT_IGNORE){
 462                         infostream<<"registerNode: WARNING: Ignoring "
 463                                         <<"CONTENT_IGNORE redefinition"<<std::endl;
 464                         return;
 465                 }
 466                 // Check that the special contents are not redefined as different id
 467                 // because it would mess up everything
 468                 if((def.name == "ignore" && c != CONTENT_IGNORE) ||
 469                         (def.name == "air" && c != CONTENT_AIR)){
 470                         errorstream<<"registerNode: IGNORING ERROR: "
 471                                         <<"trying to register built-in type \""
 472                                         <<def.name<<"\" as different id"<<std::endl;
 473                         return;
 474                 }
 475                 m_content_features[c] = def;
 476                 if(def.name != "")
 477                         addNameIdMapping(c, def.name);
 478         }
 479         virtual content_t set(const std::string &name,
 480                         const ContentFeatures &def)
 481         {
 482                 assert(name == def.name);
 483                 u16 id = CONTENT_IGNORE;
 484                 bool found = m_name_id_mapping.getId(name, id);  // ignore aliases
 485                 if(!found){
 486                         // Get some id
 487                         id = getFreeId();
 488                         if(id == CONTENT_IGNORE)
 489                                 return CONTENT_IGNORE;
 490                         if(name != "")
 491                                 addNameIdMapping(id, name);
 492                 }
 493                 set(id, def);
 494                 return id;
 495         }
 496         virtual content_t allocateDummy(const std::string &name)
 497         {
 498                 assert(name != "");
 499                 ContentFeatures f;
 500                 f.name = name;
 501                 return set(name, f);
 502         }
 503         virtual void updateAliases(IItemDefManager *idef)
 504         {
 505                 std::set<std::string> all = idef->getAll();
 506                 m_name_id_mapping_with_aliases.clear();
 507                 for(std::set<std::string>::iterator
 508                                 i = all.begin(); i != all.end(); i++)
 509                 {
 510                         std::string name = *i;
 511                         std::string convert_to = idef->getAlias(name);
 512                         content_t id;
 513                         if(m_name_id_mapping.getId(convert_to, id))
 514                         {
 515                                 m_name_id_mapping_with_aliases.insert(
 516                                                 std::make_pair(name, id));
 517                         }
 518                 }
 519         }
 520         virtual void updateTextures(ITextureSource *tsrc)
 521         {
 522 #ifndef SERVER
 523                 infostream<<"CNodeDefManager::updateTextures(): Updating "
 524                                 <<"textures in node definitions"<<std::endl;
 525
 526                 bool new_style_water = g_settings->getBool("new_style_water");
 527                 bool new_style_leaves = g_settings->getBool("new_style_leaves");
 528                 bool opaque_water = g_settings->getBool("opaque_water");
 529
 530                 for(u16 i=0; i<=MAX_CONTENT; i++)
 531                 {
 532                         ContentFeatures *f = &m_content_features[i];
 533
 534                         // Figure out the actual tiles to use
 535                         TileDef tiledef[6];
 536                         for(u32 j=0; j<6; j++)
 537                         {
 538                                 tiledef[j] = f->tiledef[j];
 539                                 if(tiledef[j].name == "")
 540                                         tiledef[j].name = "unknown_block.png";
 541                         }
 542
 543                         switch(f->drawtype){
 544                         default:
 545                         case NDT_NORMAL:
 546                                 f->solidness = 2;
 547                                 break;
 548                         case NDT_AIRLIKE:
 549                                 f->solidness = 0;
 550                                 break;
 551                         case NDT_LIQUID:
 552                                 assert(f->liquid_type == LIQUID_SOURCE);
 553                                 if(opaque_water)
 554                                         f->alpha = 255;
 555                                 if(new_style_water){
 556                                         f->solidness = 0;
 557                                 } else {
 558                                         f->solidness = 1;
 559                                         f->backface_culling = false;
 560                                 }
 561                                 break;
 562                         case NDT_FLOWINGLIQUID:
 563                                 assert(f->liquid_type == LIQUID_FLOWING);
 564                                 f->solidness = 0;
 565                                 if(opaque_water)
 566                                         f->alpha = 255;
 567                                 break;
 568                         case NDT_GLASSLIKE:
 569                                 f->solidness = 0;
 570                                 f->visual_solidness = 1;
 571                                 break;
 572                         case NDT_ALLFACES:
 573                                 f->solidness = 0;
 574                                 f->visual_solidness = 1;
 575                                 break;
 576                         case NDT_ALLFACES_OPTIONAL:
 577                                 if(new_style_leaves){
 578                                         f->drawtype = NDT_ALLFACES;
 579                                         f->solidness = 0;
 580                                         f->visual_solidness = 1;
 581                                 } else {
 582                                         f->drawtype = NDT_NORMAL;
 583                                         f->solidness = 2;
 584                                         for(u32 i=0; i<6; i++){
 585                                                 tiledef[i].name += std::string("^[noalpha");
 586                                         }
 587                                 }
 588                                 break;
 589                         case NDT_TORCHLIKE:
 590                         case NDT_SIGNLIKE:
 591                         case NDT_PLANTLIKE:
 592                         case NDT_FENCELIKE:
 593                         case NDT_RAILLIKE:
 594                         case NDT_NODEBOX:
 595                                 f->solidness = 0;
 596                                 break;
 597                         }
 598
 599                         // Tiles (fill in f->tiles[])
 600                         for(u16 j=0; j<6; j++){
 601                                 // Texture
 602                                 f->tiles[j].texture = tsrc->getTexture(tiledef[j].name);
 603                                 // Alpha
 604                                 f->tiles[j].alpha = f->alpha;
 605                                 if(f->alpha == 255)
 606                                         f->tiles[j].material_type = MATERIAL_ALPHA_SIMPLE;
 607                                 else
 608                                         f->tiles[j].material_type = MATERIAL_ALPHA_VERTEX;
 609                                 // Material flags
 610                                 f->tiles[j].material_flags = 0;
 611                                 if(f->backface_culling)
 612                                         f->tiles[j].material_flags |= MATERIAL_FLAG_BACKFACE_CULLING;
 613                                 if(tiledef[j].animation.type == TAT_VERTICAL_FRAMES)
 614                                         f->tiles[j].material_flags |= MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
 615                                 // Animation parameters
 616                                 if(f->tiles[j].material_flags &
 617                                                 MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES)
 618                                 {
 619                                         // Get raw texture size to determine frame count by
 620                                         // aspect ratio
 621                                         video::ITexture *t = tsrc->getTextureRaw(tiledef[j].name);
 622                                         v2u32 size = t->getOriginalSize();
 623                                         int frame_height = (float)size.X /
 624                                                         (float)tiledef[j].animation.aspect_w *
 625                                                         (float)tiledef[j].animation.aspect_h;
 626                                         int frame_count = size.Y / frame_height;
 627                                         int frame_length_ms = 1000.0 *
 628                                                         tiledef[j].animation.length / frame_count;
 629                                         f->tiles[j].animation_frame_count = frame_count;
 630                                         f->tiles[j].animation_frame_length_ms = frame_length_ms;
 631
 632                                         // If there are no frames for an animation, switch
 633                                         // animation off (so that having specified an animation
 634                                         // for something but not using it in the texture pack
 635                                         // gives no overhead)
 636                                         if(frame_count == 1){
 637                                                 f->tiles[j].material_flags &=
 638                                                                 ~MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
 639                                         }
 640                                 }
 641                         }
 642                         // Special tiles (fill in f->special_tiles[])
 643                         for(u16 j=0; j<CF_SPECIAL_COUNT; j++){
 644                                 // Texture
 645                                 f->special_tiles[j].texture =
 646                                                 tsrc->getTexture(f->tiledef_special[j].name);
 647                                 // Alpha
 648                                 f->special_tiles[j].alpha = f->alpha;
 649                                 if(f->alpha == 255)
 650                                         f->special_tiles[j].material_type = MATERIAL_ALPHA_SIMPLE;
 651                                 else
 652                                         f->special_tiles[j].material_type = MATERIAL_ALPHA_VERTEX;
 653                                 // Material flags
 654                                 f->special_tiles[j].material_flags = 0;
 655                                 if(f->tiledef_special[j].backface_culling)
 656                                         f->special_tiles[j].material_flags |= MATERIAL_FLAG_BACKFACE_CULLING;
 657                                 if(f->tiledef_special[j].animation.type == TAT_VERTICAL_FRAMES)
 658                                         f->special_tiles[j].material_flags |= MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
 659                                 // Animation parameters
 660                                 if(f->special_tiles[j].material_flags &
 661                                                 MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES)
 662                                 {
 663                                         // Get raw texture size to determine frame count by
 664                                         // aspect ratio
 665                                         video::ITexture *t = tsrc->getTextureRaw(f->tiledef_special[j].name);
 666                                         v2u32 size = t->getOriginalSize();
 667                                         int frame_height = (float)size.X /
 668                                                         (float)f->tiledef_special[j].animation.aspect_w *
 669                                                         (float)f->tiledef_special[j].animation.aspect_h;
 670                                         int frame_count = size.Y / frame_height;
 671                                         int frame_length_ms = 1000.0 *
 672                                                         f->tiledef_special[j].animation.length / frame_count;
 673                                         f->special_tiles[j].animation_frame_count = frame_count;
 674                                         f->special_tiles[j].animation_frame_length_ms = frame_length_ms;
 675
 676                                         // If there are no frames for an animation, switch
 677                                         // animation off (so that having specified an animation
 678                                         // for something but not using it in the texture pack
 679                                         // gives no overhead)
 680                                         if(frame_count == 1){
 681                                                 f->special_tiles[j].material_flags &=
 682                                                                 ~MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
 683                                         }
 684                                 }
 685                         }
 686                 }
 687 #endif
 688         }
 689         void serialize(std::ostream &os)
 690         {
 691                 writeU8(os, 1); // version
 692                 u16 count = 0;
 693                 std::ostringstream os2(std::ios::binary);
 694                 for(u16 i=0; i<=MAX_CONTENT; i++)
 695                 {
 696                         if(i == CONTENT_IGNORE || i == CONTENT_AIR)
 697                                 continue;
 698                         ContentFeatures *f = &m_content_features[i];
 699                         if(f->name == "")
 700                                 continue;
 701                         writeU16(os2, i);
 702                         // Wrap it in a string to allow different lengths without
 703                         // strict version incompatibilities
 704                         std::ostringstream wrapper_os(std::ios::binary);
 705                         f->serialize(wrapper_os);
 706                         os2<<serializeString(wrapper_os.str());
 707                         count++;
 708                 }
 709                 writeU16(os, count);
 710                 os<<serializeLongString(os2.str());
 711         }
 712         void deSerialize(std::istream &is)
 713         {
 714                 clear();
 715                 int version = readU8(is);
 716                 if(version != 1)
 717                         throw SerializationError("unsupported NodeDefinitionManager version");
 718                 u16 count = readU16(is);
 719                 std::istringstream is2(deSerializeLongString(is), std::ios::binary);
 720                 for(u16 n=0; n<count; n++){
 721                         u16 i = readU16(is2);
 722                         if(i > MAX_CONTENT){
 723                                 errorstream<<"ContentFeatures::deSerialize(): "
 724                                                 <<"Too large content id: "<<i<<std::endl;
 725                                 continue;
 726                         }
 727                         /*// Do not deserialize special types
 728                         if(i == CONTENT_IGNORE || i == CONTENT_AIR)
 729                                 continue;*/
 730                         ContentFeatures *f = &m_content_features[i];
 731                         // Read it from the string wrapper
 732                         std::string wrapper = deSerializeString(is2);
 733                         std::istringstream wrapper_is(wrapper, std::ios::binary);
 734                         f->deSerialize(wrapper_is);
 735                         verbosestream<<"deserialized "<<f->name<<std::endl;
 736                         if(f->name != "")
 737                                 addNameIdMapping(i, f->name);
 738                 }
 739         }
 740 private:
 741         void addNameIdMapping(content_t i, std::string name)
 742         {
 743                 m_name_id_mapping.set(i, name);
 744                 m_name_id_mapping_with_aliases.insert(std::make_pair(name, i));
 745         }
 746 private:
 747         // Features indexed by id
 748         ContentFeatures m_content_features[MAX_CONTENT+1];
 749         // A mapping for fast converting back and forth between names and ids
 750         NameIdMapping m_name_id_mapping;
 751         // Like m_name_id_mapping, but only from names to ids, and includes
 752         // item aliases too. Updated by updateAliases()
 753         // Note: Not serialized.
 754         std::map<std::string, content_t> m_name_id_mapping_with_aliases;
 755 };
 756
 757 IWritableNodeDefManager* createNodeDefManager()
 758 {
 759         return new CNodeDefManager();
 760 }
 761