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, u16 protocol_version)
 219 {
 220         if(protocol_version < 14){
 221                 serializeOld(os, protocol_version);
 222                 return;
 223         }
 224
 225         writeU8(os, 6); // version
 226         os<<serializeString(name);
 227         writeU16(os, groups.size());
 228         for(ItemGroupList::const_iterator
 229                         i = groups.begin(); i != groups.end(); i++){
 230                 os<<serializeString(i->first);
 231                 writeS16(os, i->second);
 232         }
 233         writeU8(os, drawtype);
 234         writeF1000(os, visual_scale);
 235         writeU8(os, 6);
 236         for(u32 i=0; i<6; i++)
 237                 tiledef[i].serialize(os);
 238         writeU8(os, CF_SPECIAL_COUNT);
 239         for(u32 i=0; i<CF_SPECIAL_COUNT; i++){
 240                 tiledef_special[i].serialize(os);
 241         }
 242         writeU8(os, alpha);
 243         writeU8(os, post_effect_color.getAlpha());
 244         writeU8(os, post_effect_color.getRed());
 245         writeU8(os, post_effect_color.getGreen());
 246         writeU8(os, post_effect_color.getBlue());
 247         writeU8(os, param_type);
 248         writeU8(os, param_type_2);
 249         writeU8(os, is_ground_content);
 250         writeU8(os, light_propagates);
 251         writeU8(os, sunlight_propagates);
 252         writeU8(os, walkable);
 253         writeU8(os, pointable);
 254         writeU8(os, diggable);
 255         writeU8(os, climbable);
 256         writeU8(os, buildable_to);
 257         os<<serializeString(""); // legacy: used to be metadata_name
 258         writeU8(os, liquid_type);
 259         os<<serializeString(liquid_alternative_flowing);
 260         os<<serializeString(liquid_alternative_source);
 261         writeU8(os, liquid_viscosity);
 262         writeU8(os, liquid_renewable);
 263         writeU8(os, light_source);
 264         writeU32(os, damage_per_second);
 265         node_box.serialize(os);
 266         selection_box.serialize(os);
 267         writeU8(os, legacy_facedir_simple);
 268         writeU8(os, legacy_wallmounted);
 269         serializeSimpleSoundSpec(sound_footstep, os);
 270         serializeSimpleSoundSpec(sound_dig, os);
 271         serializeSimpleSoundSpec(sound_dug, os);
 272         // Stuff below should be moved to correct place in a version that otherwise changes
 273         // the protocol version
 274 }
 275
 276 void ContentFeatures::deSerialize(std::istream &is)
 277 {
 278         int version = readU8(is);
 279         if(version != 6){
 280                 deSerializeOld(is, version);
 281                 return;
 282         }
 283
 284         name = deSerializeString(is);
 285         groups.clear();
 286         u32 groups_size = readU16(is);
 287         for(u32 i=0; i<groups_size; i++){
 288                 std::string name = deSerializeString(is);
 289                 int value = readS16(is);
 290                 groups[name] = value;
 291         }
 292         drawtype = (enum NodeDrawType)readU8(is);
 293         visual_scale = readF1000(is);
 294         if(readU8(is) != 6)
 295                 throw SerializationError("unsupported tile count");
 296         for(u32 i=0; i<6; i++)
 297                 tiledef[i].deSerialize(is);
 298         if(readU8(is) != CF_SPECIAL_COUNT)
 299                 throw SerializationError("unsupported CF_SPECIAL_COUNT");
 300         for(u32 i=0; i<CF_SPECIAL_COUNT; i++)
 301                 tiledef_special[i].deSerialize(is);
 302         alpha = readU8(is);
 303         post_effect_color.setAlpha(readU8(is));
 304         post_effect_color.setRed(readU8(is));
 305         post_effect_color.setGreen(readU8(is));
 306         post_effect_color.setBlue(readU8(is));
 307         param_type = (enum ContentParamType)readU8(is);
 308         param_type_2 = (enum ContentParamType2)readU8(is);
 309         is_ground_content = readU8(is);
 310         light_propagates = readU8(is);
 311         sunlight_propagates = readU8(is);
 312         walkable = readU8(is);
 313         pointable = readU8(is);
 314         diggable = readU8(is);
 315         climbable = readU8(is);
 316         buildable_to = readU8(is);
 317         deSerializeString(is); // legacy: used to be metadata_name
 318         liquid_type = (enum LiquidType)readU8(is);
 319         liquid_alternative_flowing = deSerializeString(is);
 320         liquid_alternative_source = deSerializeString(is);
 321         liquid_viscosity = readU8(is);
 322         liquid_renewable = readU8(is);
 323         light_source = readU8(is);
 324         damage_per_second = readU32(is);
 325         node_box.deSerialize(is);
 326         selection_box.deSerialize(is);
 327         legacy_facedir_simple = readU8(is);
 328         legacy_wallmounted = readU8(is);
 329         deSerializeSimpleSoundSpec(sound_footstep, is);
 330         deSerializeSimpleSoundSpec(sound_dig, is);
 331         deSerializeSimpleSoundSpec(sound_dug, is);
 332         // If you add anything here, insert it primarily inside the try-catch
 333         // block to not need to increase the version.
 334         try{
 335                 // Stuff below should be moved to correct place in a version that
 336                 // otherwise changes the protocol version
 337         }catch(SerializationError &e) {};
 338 }
 339
 340 /*
 341         CNodeDefManager
 342 */
 343
 344 class CNodeDefManager: public IWritableNodeDefManager
 345 {
 346 public:
 347         void clear()
 348         {
 349                 m_name_id_mapping.clear();
 350                 m_name_id_mapping_with_aliases.clear();
 351
 352                 for(u16 i=0; i<=MAX_CONTENT; i++)
 353                 {
 354                         ContentFeatures &f = m_content_features[i];
 355                         f.reset(); // Reset to defaults
 356                 }
 357
 358                 // Set CONTENT_AIR
 359                 {
 360                         ContentFeatures f;
 361                         f.name = "air";
 362                         f.drawtype = NDT_AIRLIKE;
 363                         f.param_type = CPT_LIGHT;
 364                         f.light_propagates = true;
 365                         f.sunlight_propagates = true;
 366                         f.walkable = false;
 367                         f.pointable = false;
 368                         f.diggable = false;
 369                         f.buildable_to = true;
 370                         // Insert directly into containers
 371                         content_t c = CONTENT_AIR;
 372                         m_content_features[c] = f;
 373                         addNameIdMapping(c, f.name);
 374                 }
 375                 // Set CONTENT_IGNORE
 376                 {
 377                         ContentFeatures f;
 378                         f.name = "ignore";
 379                         f.drawtype = NDT_AIRLIKE;
 380                         f.param_type = CPT_NONE;
 381                         f.light_propagates = false;
 382                         f.sunlight_propagates = false;
 383                         f.walkable = false;
 384                         f.pointable = false;
 385                         f.diggable = false;
 386                         // A way to remove accidental CONTENT_IGNOREs
 387                         f.buildable_to = true;
 388                         // Insert directly into containers
 389                         content_t c = CONTENT_IGNORE;
 390                         m_content_features[c] = f;
 391                         addNameIdMapping(c, f.name);
 392                 }
 393         }
 394         // CONTENT_IGNORE = not found
 395         content_t getFreeId()
 396         {
 397                 for(u32 i=0; i<=0xffff; i++){
 398                         const ContentFeatures &f = m_content_features[i];
 399                         if(f.name == "")
 400                                 return i;
 401                 }
 402                 return CONTENT_IGNORE;
 403         }
 404         CNodeDefManager()
 405         {
 406                 clear();
 407         }
 408         virtual ~CNodeDefManager()
 409         {
 410         }
 411         virtual IWritableNodeDefManager* clone()
 412         {
 413                 CNodeDefManager *mgr = new CNodeDefManager();
 414                 for(u16 i=0; i<=MAX_CONTENT; i++)
 415                 {
 416                         mgr->set(i, get(i));
 417                 }
 418                 return mgr;
 419         }
 420         virtual const ContentFeatures& get(content_t c) const
 421         {
 422                 assert(c <= MAX_CONTENT);
 423                 return m_content_features[c];
 424         }
 425         virtual const ContentFeatures& get(const MapNode &n) const
 426         {
 427                 return get(n.getContent());
 428         }
 429         virtual bool getId(const std::string &name, content_t &result) const
 430         {
 431                 std::map<std::string, content_t>::const_iterator
 432                         i = m_name_id_mapping_with_aliases.find(name);
 433                 if(i == m_name_id_mapping_with_aliases.end())
 434                         return false;
 435                 result = i->second;
 436                 return true;
 437         }
 438         virtual content_t getId(const std::string &name) const
 439         {
 440                 content_t id = CONTENT_IGNORE;
 441                 getId(name, id);
 442                 return id;
 443         }
 444         virtual void getIds(const std::string &name, std::set<content_t> &result)
 445                         const
 446         {
 447                 if(name.substr(0,6) != "group:"){
 448                         content_t id = CONTENT_IGNORE;
 449                         if(getId(name, id))
 450                                 result.insert(id);
 451                         return;
 452                 }
 453                 std::string group = name.substr(6);
 454                 for(u16 id=0; id<=MAX_CONTENT; id++)
 455                 {
 456                         const ContentFeatures &f = m_content_features[id];
 457                         if(f.name == "") // Quickly discard undefined nodes
 458                                 continue;
 459                         if(itemgroup_get(f.groups, group) != 0)
 460                                 result.insert(id);
 461                 }
 462         }
 463         virtual const ContentFeatures& get(const std::string &name) const
 464         {
 465                 content_t id = CONTENT_IGNORE;
 466                 getId(name, id);
 467                 return get(id);
 468         }
 469         // IWritableNodeDefManager
 470         virtual void set(content_t c, const ContentFeatures &def)
 471         {
 472                 verbosestream<<"registerNode: registering content id \""<<c
 473                                 <<"\": name=\""<<def.name<<"\""<<std::endl;
 474                 assert(c <= MAX_CONTENT);
 475                 // Don't allow redefining CONTENT_IGNORE (but allow air)
 476                 if(def.name == "ignore" || c == CONTENT_IGNORE){
 477                         infostream<<"registerNode: WARNING: Ignoring "
 478                                         <<"CONTENT_IGNORE redefinition"<<std::endl;
 479                         return;
 480                 }
 481                 // Check that the special contents are not redefined as different id
 482                 // because it would mess up everything
 483                 if((def.name == "ignore" && c != CONTENT_IGNORE) ||
 484                         (def.name == "air" && c != CONTENT_AIR)){
 485                         errorstream<<"registerNode: IGNORING ERROR: "
 486                                         <<"trying to register built-in type \""
 487                                         <<def.name<<"\" as different id"<<std::endl;
 488                         return;
 489                 }
 490                 m_content_features[c] = def;
 491                 if(def.name != "")
 492                         addNameIdMapping(c, def.name);
 493         }
 494         virtual content_t set(const std::string &name,
 495                         const ContentFeatures &def)
 496         {
 497                 assert(name == def.name);
 498                 u16 id = CONTENT_IGNORE;
 499                 bool found = m_name_id_mapping.getId(name, id);  // ignore aliases
 500                 if(!found){
 501                         // Get some id
 502                         id = getFreeId();
 503                         if(id == CONTENT_IGNORE)
 504                                 return CONTENT_IGNORE;
 505                         if(name != "")
 506                                 addNameIdMapping(id, name);
 507                 }
 508                 set(id, def);
 509                 return id;
 510         }
 511         virtual content_t allocateDummy(const std::string &name)
 512         {
 513                 assert(name != "");
 514                 ContentFeatures f;
 515                 f.name = name;
 516                 return set(name, f);
 517         }
 518         virtual void updateAliases(IItemDefManager *idef)
 519         {
 520                 std::set<std::string> all = idef->getAll();
 521                 m_name_id_mapping_with_aliases.clear();
 522                 for(std::set<std::string>::iterator
 523                                 i = all.begin(); i != all.end(); i++)
 524                 {
 525                         std::string name = *i;
 526                         std::string convert_to = idef->getAlias(name);
 527                         content_t id;
 528                         if(m_name_id_mapping.getId(convert_to, id))
 529                         {
 530                                 m_name_id_mapping_with_aliases.insert(
 531                                                 std::make_pair(name, id));
 532                         }
 533                 }
 534         }
 535         virtual void updateTextures(ITextureSource *tsrc)
 536         {
 537 #ifndef SERVER
 538                 infostream<<"CNodeDefManager::updateTextures(): Updating "
 539                                 <<"textures in node definitions"<<std::endl;
 540
 541                 bool new_style_water = g_settings->getBool("new_style_water");
 542                 bool new_style_leaves = g_settings->getBool("new_style_leaves");
 543                 bool opaque_water = g_settings->getBool("opaque_water");
 544
 545                 for(u16 i=0; i<=MAX_CONTENT; i++)
 546                 {
 547                         ContentFeatures *f = &m_content_features[i];
 548
 549                         // Figure out the actual tiles to use
 550                         TileDef tiledef[6];
 551                         for(u32 j=0; j<6; j++)
 552                         {
 553                                 tiledef[j] = f->tiledef[j];
 554                                 if(tiledef[j].name == "")
 555                                         tiledef[j].name = "unknown_block.png";
 556                         }
 557
 558                         bool is_liquid = false;
 559                         switch(f->drawtype){
 560                         default:
 561                         case NDT_NORMAL:
 562                                 f->solidness = 2;
 563                                 break;
 564                         case NDT_AIRLIKE:
 565                                 f->solidness = 0;
 566                                 break;
 567                         case NDT_LIQUID:
 568                                 assert(f->liquid_type == LIQUID_SOURCE);
 569                                 if(opaque_water)
 570                                         f->alpha = 255;
 571                                 if(new_style_water){
 572                                         f->solidness = 0;
 573                                 } else {
 574                                         f->solidness = 1;
 575                                         f->backface_culling = false;
 576                                 }
 577                                 is_liquid = true;
 578                                 break;
 579                         case NDT_FLOWINGLIQUID:
 580                                 assert(f->liquid_type == LIQUID_FLOWING);
 581                                 f->solidness = 0;
 582                                 if(opaque_water)
 583                                         f->alpha = 255;
 584                                 is_liquid = true;
 585                                 break;
 586                         case NDT_GLASSLIKE:
 587                                 f->solidness = 0;
 588                                 f->visual_solidness = 1;
 589                                 break;
 590                         case NDT_ALLFACES:
 591                                 f->solidness = 0;
 592                                 f->visual_solidness = 1;
 593                                 break;
 594                         case NDT_ALLFACES_OPTIONAL:
 595                                 if(new_style_leaves){
 596                                         f->drawtype = NDT_ALLFACES;
 597                                         f->solidness = 0;
 598                                         f->visual_solidness = 1;
 599                                 } else {
 600                                         f->drawtype = NDT_NORMAL;
 601                                         f->solidness = 2;
 602                                         for(u32 i=0; i<6; i++){
 603                                                 tiledef[i].name += std::string("^[noalpha");
 604                                         }
 605                                 }
 606                                 break;
 607                         case NDT_PLANTLIKE:
 608                                 f->solidness = 0;
 609                                 f->backface_culling = false;
 610                                 break;
 611                         case NDT_TORCHLIKE:
 612                         case NDT_SIGNLIKE:
 613                         case NDT_FENCELIKE:
 614                         case NDT_RAILLIKE:
 615                         case NDT_NODEBOX:
 616                                 f->solidness = 0;
 617                                 break;
 618                         }
 619
 620                         u8 material_type = 0;
 621                         if(is_liquid){
 622                                 if(f->alpha == 255)
 623                                         material_type = TILE_MATERIAL_LIQUID_OPAQUE;
 624                                 else
 625                                         material_type = TILE_MATERIAL_LIQUID_TRANSPARENT;
 626                         } else{
 627                                 material_type = TILE_MATERIAL_BASIC;
 628                         }
 629
 630                         // Tiles (fill in f->tiles[])
 631                         for(u16 j=0; j<6; j++){
 632                                 // Texture
 633                                 f->tiles[j].texture = tsrc->getTexture(tiledef[j].name);
 634                                 // Alpha
 635                                 f->tiles[j].alpha = f->alpha;
 636                                 // Material type
 637                                 f->tiles[j].material_type = material_type;
 638                                 // Material flags
 639                                 f->tiles[j].material_flags = 0;
 640                                 if(f->backface_culling)
 641                                         f->tiles[j].material_flags |= MATERIAL_FLAG_BACKFACE_CULLING;
 642                                 if(tiledef[j].animation.type == TAT_VERTICAL_FRAMES)
 643                                         f->tiles[j].material_flags |= MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
 644                                 // Animation parameters
 645                                 if(f->tiles[j].material_flags &
 646                                                 MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES)
 647                                 {
 648                                         // Get raw texture size to determine frame count by
 649                                         // aspect ratio
 650                                         video::ITexture *t = tsrc->getTextureRaw(tiledef[j].name);
 651                                         v2u32 size = t->getOriginalSize();
 652                                         int frame_height = (float)size.X /
 653                                                         (float)tiledef[j].animation.aspect_w *
 654                                                         (float)tiledef[j].animation.aspect_h;
 655                                         int frame_count = size.Y / frame_height;
 656                                         int frame_length_ms = 1000.0 *
 657                                                         tiledef[j].animation.length / frame_count;
 658                                         f->tiles[j].animation_frame_count = frame_count;
 659                                         f->tiles[j].animation_frame_length_ms = frame_length_ms;
 660
 661                                         // If there are no frames for an animation, switch
 662                                         // animation off (so that having specified an animation
 663                                         // for something but not using it in the texture pack
 664                                         // gives no overhead)
 665                                         if(frame_count == 1){
 666                                                 f->tiles[j].material_flags &=
 667                                                                 ~MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
 668                                         }
 669                                 }
 670                         }
 671                         // Special tiles (fill in f->special_tiles[])
 672                         for(u16 j=0; j<CF_SPECIAL_COUNT; j++){
 673                                 // Texture
 674                                 f->special_tiles[j].texture =
 675                                                 tsrc->getTexture(f->tiledef_special[j].name);
 676                                 // Alpha
 677                                 f->special_tiles[j].alpha = f->alpha;
 678                                 // Material type
 679                                 f->special_tiles[j].material_type = material_type;
 680                                 // Material flags
 681                                 f->special_tiles[j].material_flags = 0;
 682                                 if(f->tiledef_special[j].backface_culling)
 683                                         f->special_tiles[j].material_flags |= MATERIAL_FLAG_BACKFACE_CULLING;
 684                                 if(f->tiledef_special[j].animation.type == TAT_VERTICAL_FRAMES)
 685                                         f->special_tiles[j].material_flags |= MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
 686                                 // Animation parameters
 687                                 if(f->special_tiles[j].material_flags &
 688                                                 MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES)
 689                                 {
 690                                         // Get raw texture size to determine frame count by
 691                                         // aspect ratio
 692                                         video::ITexture *t = tsrc->getTextureRaw(f->tiledef_special[j].name);
 693                                         v2u32 size = t->getOriginalSize();
 694                                         int frame_height = (float)size.X /
 695                                                         (float)f->tiledef_special[j].animation.aspect_w *
 696                                                         (float)f->tiledef_special[j].animation.aspect_h;
 697                                         int frame_count = size.Y / frame_height;
 698                                         int frame_length_ms = 1000.0 *
 699                                                         f->tiledef_special[j].animation.length / frame_count;
 700                                         f->special_tiles[j].animation_frame_count = frame_count;
 701                                         f->special_tiles[j].animation_frame_length_ms = frame_length_ms;
 702
 703                                         // If there are no frames for an animation, switch
 704                                         // animation off (so that having specified an animation
 705                                         // for something but not using it in the texture pack
 706                                         // gives no overhead)
 707                                         if(frame_count == 1){
 708                                                 f->special_tiles[j].material_flags &=
 709                                                                 ~MATERIAL_FLAG_ANIMATION_VERTICAL_FRAMES;
 710                                         }
 711                                 }
 712                         }
 713                 }
 714 #endif
 715         }
 716         void serialize(std::ostream &os, u16 protocol_version)
 717         {
 718                 writeU8(os, 1); // version
 719                 u16 count = 0;
 720                 std::ostringstream os2(std::ios::binary);
 721                 for(u16 i=0; i<=MAX_CONTENT; i++)
 722                 {
 723                         if(i == CONTENT_IGNORE || i == CONTENT_AIR)
 724                                 continue;
 725                         ContentFeatures *f = &m_content_features[i];
 726                         if(f->name == "")
 727                                 continue;
 728                         writeU16(os2, i);
 729                         // Wrap it in a string to allow different lengths without
 730                         // strict version incompatibilities
 731                         std::ostringstream wrapper_os(std::ios::binary);
 732                         f->serialize(wrapper_os, protocol_version);
 733                         os2<<serializeString(wrapper_os.str());
 734                         count++;
 735                 }
 736                 writeU16(os, count);
 737                 os<<serializeLongString(os2.str());
 738         }
 739         void deSerialize(std::istream &is)
 740         {
 741                 clear();
 742                 int version = readU8(is);
 743                 if(version != 1)
 744                         throw SerializationError("unsupported NodeDefinitionManager version");
 745                 u16 count = readU16(is);
 746                 std::istringstream is2(deSerializeLongString(is), std::ios::binary);
 747                 for(u16 n=0; n<count; n++){
 748                         u16 i = readU16(is2);
 749                         if(i > MAX_CONTENT){
 750                                 errorstream<<"ContentFeatures::deSerialize(): "
 751                                                 <<"Too large content id: "<<i<<std::endl;
 752                                 continue;
 753                         }
 754                         /*// Do not deserialize special types
 755                         if(i == CONTENT_IGNORE || i == CONTENT_AIR)
 756                                 continue;*/
 757                         ContentFeatures *f = &m_content_features[i];
 758                         // Read it from the string wrapper
 759                         std::string wrapper = deSerializeString(is2);
 760                         std::istringstream wrapper_is(wrapper, std::ios::binary);
 761                         f->deSerialize(wrapper_is);
 762                         verbosestream<<"deserialized "<<f->name<<std::endl;
 763                         if(f->name != "")
 764                                 addNameIdMapping(i, f->name);
 765                 }
 766         }
 767 private:
 768         void addNameIdMapping(content_t i, std::string name)
 769         {
 770                 m_name_id_mapping.set(i, name);
 771                 m_name_id_mapping_with_aliases.insert(std::make_pair(name, i));
 772         }
 773 private:
 774         // Features indexed by id
 775         ContentFeatures m_content_features[MAX_CONTENT+1];
 776         // A mapping for fast converting back and forth between names and ids
 777         NameIdMapping m_name_id_mapping;
 778         // Like m_name_id_mapping, but only from names to ids, and includes
 779         // item aliases too. Updated by updateAliases()
 780         // Note: Not serialized.
 781         std::map<std::string, content_t> m_name_id_mapping_with_aliases;
 782 };
 783
 784 IWritableNodeDefManager* createNodeDefManager()
 785 {
 786         return new CNodeDefManager();
 787 }
 788
 789 /*
 790         Serialization of old ContentFeatures formats
 791 */
 792
 793 void ContentFeatures::serializeOld(std::ostream &os, u16 protocol_version)
 794 {
 795         if(protocol_version == 13)
 796         {
 797                 writeU8(os, 5); // version
 798                 os<<serializeString(name);
 799                 writeU16(os, groups.size());
 800                 for(ItemGroupList::const_iterator
 801                                 i = groups.begin(); i != groups.end(); i++){
 802                         os<<serializeString(i->first);
 803                         writeS16(os, i->second);
 804                 }
 805                 writeU8(os, drawtype);
 806                 writeF1000(os, visual_scale);
 807                 writeU8(os, 6);
 808                 for(u32 i=0; i<6; i++)
 809                         tiledef[i].serialize(os);
 810                 writeU8(os, CF_SPECIAL_COUNT);
 811                 for(u32 i=0; i<CF_SPECIAL_COUNT; i++){
 812                         tiledef_special[i].serialize(os);
 813                 }
 814                 writeU8(os, alpha);
 815                 writeU8(os, post_effect_color.getAlpha());
 816                 writeU8(os, post_effect_color.getRed());
 817                 writeU8(os, post_effect_color.getGreen());
 818                 writeU8(os, post_effect_color.getBlue());
 819                 writeU8(os, param_type);
 820                 writeU8(os, param_type_2);
 821                 writeU8(os, is_ground_content);
 822                 writeU8(os, light_propagates);
 823                 writeU8(os, sunlight_propagates);
 824                 writeU8(os, walkable);
 825                 writeU8(os, pointable);
 826                 writeU8(os, diggable);
 827                 writeU8(os, climbable);
 828                 writeU8(os, buildable_to);
 829                 os<<serializeString(""); // legacy: used to be metadata_name
 830                 writeU8(os, liquid_type);
 831                 os<<serializeString(liquid_alternative_flowing);
 832                 os<<serializeString(liquid_alternative_source);
 833                 writeU8(os, liquid_viscosity);
 834                 writeU8(os, light_source);
 835                 writeU32(os, damage_per_second);
 836                 node_box.serialize(os);
 837                 selection_box.serialize(os);
 838                 writeU8(os, legacy_facedir_simple);
 839                 writeU8(os, legacy_wallmounted);
 840                 serializeSimpleSoundSpec(sound_footstep, os);
 841                 serializeSimpleSoundSpec(sound_dig, os);
 842                 serializeSimpleSoundSpec(sound_dug, os);
 843         }
 844         else
 845         {
 846                 throw SerializationError("ContentFeatures::serialize(): Unsupported version requested");
 847         }
 848 }
 849
 850 void ContentFeatures::deSerializeOld(std::istream &is, int version)
 851 {
 852         if(version == 5) // In PROTOCOL_VERSION 13
 853         {
 854                 name = deSerializeString(is);
 855                 groups.clear();
 856                 u32 groups_size = readU16(is);
 857                 for(u32 i=0; i<groups_size; i++){
 858                         std::string name = deSerializeString(is);
 859                         int value = readS16(is);
 860                         groups[name] = value;
 861                 }
 862                 drawtype = (enum NodeDrawType)readU8(is);
 863                 visual_scale = readF1000(is);
 864                 if(readU8(is) != 6)
 865                         throw SerializationError("unsupported tile count");
 866                 for(u32 i=0; i<6; i++)
 867                         tiledef[i].deSerialize(is);
 868                 if(readU8(is) != CF_SPECIAL_COUNT)
 869                         throw SerializationError("unsupported CF_SPECIAL_COUNT");
 870                 for(u32 i=0; i<CF_SPECIAL_COUNT; i++)
 871                         tiledef_special[i].deSerialize(is);
 872                 alpha = readU8(is);
 873                 post_effect_color.setAlpha(readU8(is));
 874                 post_effect_color.setRed(readU8(is));
 875                 post_effect_color.setGreen(readU8(is));
 876                 post_effect_color.setBlue(readU8(is));
 877                 param_type = (enum ContentParamType)readU8(is);
 878                 param_type_2 = (enum ContentParamType2)readU8(is);
 879                 is_ground_content = readU8(is);
 880                 light_propagates = readU8(is);
 881                 sunlight_propagates = readU8(is);
 882                 walkable = readU8(is);
 883                 pointable = readU8(is);
 884                 diggable = readU8(is);
 885                 climbable = readU8(is);
 886                 buildable_to = readU8(is);
 887                 deSerializeString(is); // legacy: used to be metadata_name
 888                 liquid_type = (enum LiquidType)readU8(is);
 889                 liquid_alternative_flowing = deSerializeString(is);
 890                 liquid_alternative_source = deSerializeString(is);
 891                 liquid_viscosity = readU8(is);
 892                 light_source = readU8(is);
 893                 damage_per_second = readU32(is);
 894                 node_box.deSerialize(is);
 895                 selection_box.deSerialize(is);
 896                 legacy_facedir_simple = readU8(is);
 897                 legacy_wallmounted = readU8(is);
 898                 deSerializeSimpleSoundSpec(sound_footstep, is);
 899                 deSerializeSimpleSoundSpec(sound_dig, is);
 900                 deSerializeSimpleSoundSpec(sound_dug, is);
 901         }
 902         else
 903         {
 904                 throw SerializationError("unsupported ContentFeatures version");
 905         }
 906 }
 907