src/itemdef.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
   4 Copyright (C) 2013 Kahrl <kahrl@gmx.net>
   5
   6 This program is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU Lesser General Public License as published by
   8 the Free Software Foundation; either version 2.1 of the License, or
   9 (at your option) any later version.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU Lesser General Public License for more details.
  15
  16 You should have received a copy of the GNU Lesser General Public License along
  17 with this program; if not, write to the Free Software Foundation, Inc.,
  18 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19 */
  20
  21 #include "itemdef.h"
  22
  23 #include "gamedef.h"
  24 #include "nodedef.h"
  25 #include "tool.h"
  26 #include "inventory.h"
  27 #ifndef SERVER
  28 #include "mapblock_mesh.h"
  29 #include "mesh.h"
  30 #include "tile.h"
  31 #endif
  32 #include "log.h"
  33 #include "main.h" // g_settings
  34 #include "settings.h"
  35 #include "util/serialize.h"
  36 #include "util/container.h"
  37 #include "util/thread.h"
  38 #include <map>
  39 #include <set>
  40
  41 /*
  42         ItemDefinition
  43 */
  44 ItemDefinition::ItemDefinition()
  45 {
  46         resetInitial();
  47 }
  48
  49 ItemDefinition::ItemDefinition(const ItemDefinition &def)
  50 {
  51         resetInitial();
  52         *this = def;
  53 }
  54
  55 ItemDefinition& ItemDefinition::operator=(const ItemDefinition &def)
  56 {
  57         if(this == &def)
  58                 return *this;
  59
  60         reset();
  61
  62         type = def.type;
  63         name = def.name;
  64         description = def.description;
  65         inventory_image = def.inventory_image;
  66         wield_image = def.wield_image;
  67         wield_scale = def.wield_scale;
  68         stack_max = def.stack_max;
  69         usable = def.usable;
  70         liquids_pointable = def.liquids_pointable;
  71         if(def.tool_capabilities)
  72         {
  73                 tool_capabilities = new ToolCapabilities(
  74                                 *def.tool_capabilities);
  75         }
  76         groups = def.groups;
  77         node_placement_prediction = def.node_placement_prediction;
  78         sound_place = def.sound_place;
  79         range = def.range;
  80         return *this;
  81 }
  82
  83 ItemDefinition::~ItemDefinition()
  84 {
  85         reset();
  86 }
  87
  88 void ItemDefinition::resetInitial()
  89 {
  90         // Initialize pointers to NULL so reset() does not delete undefined pointers
  91         tool_capabilities = NULL;
  92         reset();
  93 }
  94
  95 void ItemDefinition::reset()
  96 {
  97         type = ITEM_NONE;
  98         name = "";
  99         description = "";
 100         inventory_image = "";
 101         wield_image = "";
 102         wield_scale = v3f(1.0, 1.0, 1.0);
 103         stack_max = 99;
 104         usable = false;
 105         liquids_pointable = false;
 106         if(tool_capabilities)
 107         {
 108                 delete tool_capabilities;
 109                 tool_capabilities = NULL;
 110         }
 111         groups.clear();
 112         sound_place = SimpleSoundSpec();
 113         range = -1;
 114
 115         node_placement_prediction = "";
 116 }
 117
 118 void ItemDefinition::serialize(std::ostream &os, u16 protocol_version) const
 119 {
 120         if(protocol_version <= 17)
 121                 writeU8(os, 1); // version
 122         else if(protocol_version <= 20)
 123                 writeU8(os, 2); // version
 124         else
 125                 writeU8(os, 3); // version
 126         writeU8(os, type);
 127         os<<serializeString(name);
 128         os<<serializeString(description);
 129         os<<serializeString(inventory_image);
 130         os<<serializeString(wield_image);
 131         writeV3F1000(os, wield_scale);
 132         writeS16(os, stack_max);
 133         writeU8(os, usable);
 134         writeU8(os, liquids_pointable);
 135         std::string tool_capabilities_s = "";
 136         if(tool_capabilities){
 137                 std::ostringstream tmp_os(std::ios::binary);
 138                 tool_capabilities->serialize(tmp_os, protocol_version);
 139                 tool_capabilities_s = tmp_os.str();
 140         }
 141         os<<serializeString(tool_capabilities_s);
 142         writeU16(os, groups.size());
 143         for(std::map<std::string, int>::const_iterator
 144                         i = groups.begin(); i != groups.end(); i++){
 145                 os<<serializeString(i->first);
 146                 writeS16(os, i->second);
 147         }
 148         os<<serializeString(node_placement_prediction);
 149         if(protocol_version > 17){
 150                 //serializeSimpleSoundSpec(sound_place, os);
 151                 os<<serializeString(sound_place.name);
 152                 writeF1000(os, sound_place.gain);
 153         }
 154         if(protocol_version > 20){
 155                 writeF1000(os, range);
 156         }
 157 }
 158
 159 void ItemDefinition::deSerialize(std::istream &is)
 160 {
 161         // Reset everything
 162         reset();
 163
 164         // Deserialize
 165         int version = readU8(is);
 166         if(version < 1 || version > 3)
 167                 throw SerializationError("unsupported ItemDefinition version");
 168         type = (enum ItemType)readU8(is);
 169         name = deSerializeString(is);
 170         description = deSerializeString(is);
 171         inventory_image = deSerializeString(is);
 172         wield_image = deSerializeString(is);
 173         wield_scale = readV3F1000(is);
 174         stack_max = readS16(is);
 175         usable = readU8(is);
 176         liquids_pointable = readU8(is);
 177         std::string tool_capabilities_s = deSerializeString(is);
 178         if(!tool_capabilities_s.empty())
 179         {
 180                 std::istringstream tmp_is(tool_capabilities_s, std::ios::binary);
 181                 tool_capabilities = new ToolCapabilities;
 182                 tool_capabilities->deSerialize(tmp_is);
 183         }
 184         groups.clear();
 185         u32 groups_size = readU16(is);
 186         for(u32 i=0; i<groups_size; i++){
 187                 std::string name = deSerializeString(is);
 188                 int value = readS16(is);
 189                 groups[name] = value;
 190         }
 191         if(version == 1){
 192                 // We cant be sure that node_placement_prediction is send in version 1
 193                 try{
 194                         node_placement_prediction = deSerializeString(is);
 195                 }catch(SerializationError &e) {};
 196                 // Set the old default sound
 197                 sound_place.name = "default_place_node";
 198                 sound_place.gain = 0.5;
 199         } else if(version >= 2) {
 200                 node_placement_prediction = deSerializeString(is);
 201                 //deserializeSimpleSoundSpec(sound_place, is);
 202                 sound_place.name = deSerializeString(is);
 203                 sound_place.gain = readF1000(is);
 204         }
 205         if(version == 3) {
 206                 range = readF1000(is);
 207         }
 208         // If you add anything here, insert it primarily inside the try-catch
 209         // block to not need to increase the version.
 210         try{
 211         }catch(SerializationError &e) {};
 212 }
 213
 214 /*
 215         CItemDefManager
 216 */
 217
 218 // SUGG: Support chains of aliases?
 219
 220 class CItemDefManager: public IWritableItemDefManager
 221 {
 222 #ifndef SERVER
 223         struct ClientCached
 224         {
 225                 video::ITexture *inventory_texture;
 226                 scene::IMesh *wield_mesh;
 227
 228                 ClientCached():
 229                         inventory_texture(NULL),
 230                         wield_mesh(NULL)
 231                 {}
 232         };
 233 #endif
 234
 235 public:
 236         CItemDefManager()
 237         {
 238
 239 #ifndef SERVER
 240                 m_main_thread = get_current_thread_id();
 241 #endif
 242                 clear();
 243         }
 244         virtual ~CItemDefManager()
 245         {
 246 #ifndef SERVER
 247                 const std::list<ClientCached*> &values = m_clientcached.getValues();
 248                 for(std::list<ClientCached*>::const_iterator
 249                                 i = values.begin(); i != values.end(); ++i)
 250                 {
 251                         ClientCached *cc = *i;
 252                         if (cc->wield_mesh)
 253                                 cc->wield_mesh->drop();
 254                         delete cc;
 255                 }
 256
 257 #endif
 258                 for (std::map<std::string, ItemDefinition*>::iterator iter =
 259                                 m_item_definitions.begin(); iter != m_item_definitions.end();
 260                                 iter ++) {
 261                         delete iter->second;
 262                 }
 263                 m_item_definitions.clear();
 264         }
 265         virtual const ItemDefinition& get(const std::string &name_) const
 266         {
 267                 // Convert name according to possible alias
 268                 std::string name = getAlias(name_);
 269                 // Get the definition
 270                 std::map<std::string, ItemDefinition*>::const_iterator i;
 271                 i = m_item_definitions.find(name);
 272                 if(i == m_item_definitions.end())
 273                         i = m_item_definitions.find("unknown");
 274                 assert(i != m_item_definitions.end());
 275                 return *(i->second);
 276         }
 277         virtual std::string getAlias(const std::string &name) const
 278         {
 279                 std::map<std::string, std::string>::const_iterator i;
 280                 i = m_aliases.find(name);
 281                 if(i != m_aliases.end())
 282                         return i->second;
 283                 return name;
 284         }
 285         virtual std::set<std::string> getAll() const
 286         {
 287                 std::set<std::string> result;
 288                 for(std::map<std::string, ItemDefinition*>::const_iterator
 289                                 i = m_item_definitions.begin();
 290                                 i != m_item_definitions.end(); i++)
 291                 {
 292                         result.insert(i->first);
 293                 }
 294                 for(std::map<std::string, std::string>::const_iterator
 295                                 i = m_aliases.begin();
 296                                 i != m_aliases.end(); i++)
 297                 {
 298                         result.insert(i->first);
 299                 }
 300                 return result;
 301         }
 302         virtual bool isKnown(const std::string &name_) const
 303         {
 304                 // Convert name according to possible alias
 305                 std::string name = getAlias(name_);
 306                 // Get the definition
 307                 std::map<std::string, ItemDefinition*>::const_iterator i;
 308                 return m_item_definitions.find(name) != m_item_definitions.end();
 309         }
 310 #ifndef SERVER
 311 public:
 312         ClientCached* createClientCachedDirect(const std::string &name,
 313                         IGameDef *gamedef) const
 314         {
 315                 infostream<<"Lazily creating item texture and mesh for \""
 316                                 <<name<<"\""<<std::endl;
 317
 318                 // This is not thread-safe
 319                 assert(get_current_thread_id() == m_main_thread);
 320
 321                 // Skip if already in cache
 322                 ClientCached *cc = NULL;
 323                 m_clientcached.get(name, &cc);
 324                 if(cc)
 325                         return cc;
 326
 327                 ITextureSource *tsrc = gamedef->getTextureSource();
 328                 INodeDefManager *nodedef = gamedef->getNodeDefManager();
 329                 IrrlichtDevice *device = tsrc->getDevice();
 330                 video::IVideoDriver *driver = device->getVideoDriver();
 331                 const ItemDefinition *def = &get(name);
 332
 333                 // Create new ClientCached
 334                 cc = new ClientCached();
 335
 336                 bool need_node_mesh = false;
 337
 338                 // Create an inventory texture
 339                 cc->inventory_texture = NULL;
 340                 if(def->inventory_image != "")
 341                 {
 342                         cc->inventory_texture = tsrc->getTexture(def->inventory_image);
 343                 }
 344                 else if(def->type == ITEM_NODE)
 345                 {
 346                         need_node_mesh = true;
 347                 }
 348
 349                 // Create a wield mesh
 350                 assert(cc->wield_mesh == NULL);
 351                 if(def->type == ITEM_NODE && def->wield_image == "")
 352                 {
 353                         need_node_mesh = true;
 354                 }
 355                 else if(def->wield_image != "" || def->inventory_image != "")
 356                 {
 357                         // Extrude the wield image into a mesh
 358
 359                         std::string imagename;
 360                         if(def->wield_image != "")
 361                                 imagename = def->wield_image;
 362                         else
 363                                 imagename = def->inventory_image;
 364
 365                         cc->wield_mesh = createExtrudedMesh(
 366                                         tsrc->getTexture(imagename),
 367                                         driver,
 368                                         def->wield_scale * v3f(40.0, 40.0, 4.0));
 369                         if(cc->wield_mesh == NULL)
 370                         {
 371                                 infostream<<"ItemDefManager: WARNING: "
 372                                         <<"updateTexturesAndMeshes(): "
 373                                         <<"Unable to create extruded mesh for item "
 374                                         <<def->name<<std::endl;
 375                         }
 376                 }
 377
 378                 if(need_node_mesh)
 379                 {
 380                         /*
 381                                 Get node properties
 382                         */
 383                         content_t id = nodedef->getId(def->name);
 384                         const ContentFeatures &f = nodedef->get(id);
 385
 386                         u8 param1 = 0;
 387                         if(f.param_type == CPT_LIGHT)
 388                                 param1 = 0xee;
 389
 390                         /*
 391                                 Make a mesh from the node
 392                         */
 393                         MeshMakeData mesh_make_data(gamedef);
 394                         MapNode mesh_make_node(id, param1, 0);
 395                         mesh_make_data.fillSingleNode(&mesh_make_node);
 396                         MapBlockMesh mapblock_mesh(&mesh_make_data);
 397
 398                         scene::IMesh *node_mesh = mapblock_mesh.getMesh();
 399                         assert(node_mesh);
 400                         video::SColor c(255, 255, 255, 255);
 401                         if(g_settings->getBool("enable_shaders"))
 402                                 c = MapBlock_LightColor(255, 0xffff, decode_light(f.light_source));
 403                         setMeshColor(node_mesh, c);
 404
 405                         /*
 406                                 Scale and translate the mesh so it's a unit cube
 407                                 centered on the origin
 408                         */
 409                         scaleMesh(node_mesh, v3f(1.0/BS, 1.0/BS, 1.0/BS));
 410                         translateMesh(node_mesh, v3f(-1.0, -1.0, -1.0));
 411
 412                         /*
 413                                 Draw node mesh into a render target texture
 414                         */
 415                         if(cc->inventory_texture == NULL)
 416                         {
 417                                 TextureFromMeshParams params;
 418                                 params.mesh = node_mesh;
 419                                 params.dim.set(64, 64);
 420                                 params.rtt_texture_name = "INVENTORY_"
 421                                         + def->name + "_RTT";
 422                                 params.delete_texture_on_shutdown = true;
 423                                 params.camera_position.set(0, 1.0, -1.5);
 424                                 params.camera_position.rotateXZBy(45);
 425                                 params.camera_lookat.set(0, 0, 0);
 426                                 // Set orthogonal projection
 427                                 params.camera_projection_matrix.buildProjectionMatrixOrthoLH(
 428                                                 1.65, 1.65, 0, 100);
 429                                 params.ambient_light.set(1.0, 0.2, 0.2, 0.2);
 430                                 params.light_position.set(10, 100, -50);
 431                                 params.light_color.set(1.0, 0.5, 0.5, 0.5);
 432                                 params.light_radius = 1000;
 433
 434                                 cc->inventory_texture =
 435                                         tsrc->generateTextureFromMesh(params);
 436
 437                                 // render-to-target didn't work
 438                                 if(cc->inventory_texture == NULL)
 439                                 {
 440                                         cc->inventory_texture =
 441                                                 tsrc->getTexture(f.tiledef[0].name);
 442                                 }
 443                         }
 444
 445                         /*
 446                                 Use the node mesh as the wield mesh
 447                         */
 448
 449                         // Scale to proper wield mesh proportions
 450                         scaleMesh(node_mesh, v3f(30.0, 30.0, 30.0)
 451                                         * def->wield_scale);
 452
 453                         cc->wield_mesh = node_mesh;
 454                         cc->wield_mesh->grab();
 455
 456                         //no way reference count can be smaller than 2 in this place!
 457                         assert(cc->wield_mesh->getReferenceCount() >= 2);
 458                 }
 459
 460                 // Put in cache
 461                 m_clientcached.set(name, cc);
 462
 463                 return cc;
 464         }
 465         ClientCached* getClientCached(const std::string &name,
 466                         IGameDef *gamedef) const
 467         {
 468                 ClientCached *cc = NULL;
 469                 m_clientcached.get(name, &cc);
 470                 if(cc)
 471                         return cc;
 472
 473                 if(get_current_thread_id() == m_main_thread)
 474                 {
 475                         return createClientCachedDirect(name, gamedef);
 476                 }
 477                 else
 478                 {
 479                         // We're gonna ask the result to be put into here
 480                         ResultQueue<std::string, ClientCached*, u8, u8> result_queue;
 481                         // Throw a request in
 482                         m_get_clientcached_queue.add(name, 0, 0, &result_queue);
 483                         try{
 484                                 // Wait result for a second
 485                                 GetResult<std::string, ClientCached*, u8, u8>
 486                                                 result = result_queue.pop_front(1000);
 487                                 // Check that at least something worked OK
 488                                 assert(result.key == name);
 489                                 // Return it
 490                                 return result.item;
 491                         }
 492                         catch(ItemNotFoundException &e)
 493                         {
 494                                 errorstream<<"Waiting for clientcached timed out."<<std::endl;
 495                                 return &m_dummy_clientcached;
 496                         }
 497                 }
 498         }
 499         // Get item inventory texture
 500         virtual video::ITexture* getInventoryTexture(const std::string &name,
 501                         IGameDef *gamedef) const
 502         {
 503                 ClientCached *cc = getClientCached(name, gamedef);
 504                 if(!cc)
 505                         return NULL;
 506                 return cc->inventory_texture;
 507         }
 508         // Get item wield mesh
 509         virtual scene::IMesh* getWieldMesh(const std::string &name,
 510                         IGameDef *gamedef) const
 511         {
 512                 ClientCached *cc = getClientCached(name, gamedef);
 513                 if(!cc)
 514                         return NULL;
 515                 return cc->wield_mesh;
 516         }
 517 #endif
 518         void clear()
 519         {
 520                 for(std::map<std::string, ItemDefinition*>::const_iterator
 521                                 i = m_item_definitions.begin();
 522                                 i != m_item_definitions.end(); i++)
 523                 {
 524                         delete i->second;
 525                 }
 526                 m_item_definitions.clear();
 527                 m_aliases.clear();
 528
 529                 // Add the four builtin items:
 530                 //   "" is the hand
 531                 //   "unknown" is returned whenever an undefined item
 532                 //     is accessed (is also the unknown node)
 533                 //   "air" is the air node
 534                 //   "ignore" is the ignore node
 535
 536                 ItemDefinition* hand_def = new ItemDefinition;
 537                 hand_def->name = "";
 538                 hand_def->wield_image = "wieldhand.png";
 539                 hand_def->tool_capabilities = new ToolCapabilities;
 540                 m_item_definitions.insert(std::make_pair("", hand_def));
 541
 542                 ItemDefinition* unknown_def = new ItemDefinition;
 543                 unknown_def->type = ITEM_NODE;
 544                 unknown_def->name = "unknown";
 545                 m_item_definitions.insert(std::make_pair("unknown", unknown_def));
 546
 547                 ItemDefinition* air_def = new ItemDefinition;
 548                 air_def->type = ITEM_NODE;
 549                 air_def->name = "air";
 550                 m_item_definitions.insert(std::make_pair("air", air_def));
 551
 552                 ItemDefinition* ignore_def = new ItemDefinition;
 553                 ignore_def->type = ITEM_NODE;
 554                 ignore_def->name = "ignore";
 555                 m_item_definitions.insert(std::make_pair("ignore", ignore_def));
 556         }
 557         virtual void registerItem(const ItemDefinition &def)
 558         {
 559                 verbosestream<<"ItemDefManager: registering \""<<def.name<<"\""<<std::endl;
 560                 // Ensure that the "" item (the hand) always has ToolCapabilities
 561                 if(def.name == "")
 562                         assert(def.tool_capabilities != NULL);
 563
 564                 if(m_item_definitions.count(def.name) == 0)
 565                         m_item_definitions[def.name] = new ItemDefinition(def);
 566                 else
 567                         *(m_item_definitions[def.name]) = def;
 568
 569                 // Remove conflicting alias if it exists
 570                 bool alias_removed = (m_aliases.erase(def.name) != 0);
 571                 if(alias_removed)
 572                         infostream<<"ItemDefManager: erased alias "<<def.name
 573                                         <<" because item was defined"<<std::endl;
 574         }
 575         virtual void registerAlias(const std::string &name,
 576                         const std::string &convert_to)
 577         {
 578                 if(m_item_definitions.find(name) == m_item_definitions.end())
 579                 {
 580                         verbosestream<<"ItemDefManager: setting alias "<<name
 581                                 <<" -> "<<convert_to<<std::endl;
 582                         m_aliases[name] = convert_to;
 583                 }
 584         }
 585         void serialize(std::ostream &os, u16 protocol_version)
 586         {
 587                 writeU8(os, 0); // version
 588                 u16 count = m_item_definitions.size();
 589                 writeU16(os, count);
 590                 for(std::map<std::string, ItemDefinition*>::const_iterator
 591                                 i = m_item_definitions.begin();
 592                                 i != m_item_definitions.end(); i++)
 593                 {
 594                         ItemDefinition *def = i->second;
 595                         // Serialize ItemDefinition and write wrapped in a string
 596                         std::ostringstream tmp_os(std::ios::binary);
 597                         def->serialize(tmp_os, protocol_version);
 598                         os<<serializeString(tmp_os.str());
 599                 }
 600                 writeU16(os, m_aliases.size());
 601                 for(std::map<std::string, std::string>::const_iterator
 602                         i = m_aliases.begin(); i != m_aliases.end(); i++)
 603                 {
 604                         os<<serializeString(i->first);
 605                         os<<serializeString(i->second);
 606                 }
 607         }
 608         void deSerialize(std::istream &is)
 609         {
 610                 // Clear everything
 611                 clear();
 612                 // Deserialize
 613                 int version = readU8(is);
 614                 if(version != 0)
 615                         throw SerializationError("unsupported ItemDefManager version");
 616                 u16 count = readU16(is);
 617                 for(u16 i=0; i<count; i++)
 618                 {
 619                         // Deserialize a string and grab an ItemDefinition from it
 620                         std::istringstream tmp_is(deSerializeString(is), std::ios::binary);
 621                         ItemDefinition def;
 622                         def.deSerialize(tmp_is);
 623                         // Register
 624                         registerItem(def);
 625                 }
 626                 u16 num_aliases = readU16(is);
 627                 for(u16 i=0; i<num_aliases; i++)
 628                 {
 629                         std::string name = deSerializeString(is);
 630                         std::string convert_to = deSerializeString(is);
 631                         registerAlias(name, convert_to);
 632                 }
 633         }
 634         void processQueue(IGameDef *gamedef)
 635         {
 636 #ifndef SERVER
 637                 while(!m_get_clientcached_queue.empty())
 638                 {
 639                         GetRequest<std::string, ClientCached*, u8, u8>
 640                                         request = m_get_clientcached_queue.pop();
 641
 642                         m_get_clientcached_queue.pushResult(request,
 643                                         createClientCachedDirect(request.key, gamedef));
 644                 }
 645 #endif
 646         }
 647 private:
 648         // Key is name
 649         std::map<std::string, ItemDefinition*> m_item_definitions;
 650         // Aliases
 651         std::map<std::string, std::string> m_aliases;
 652 #ifndef SERVER
 653         // The id of the thread that is allowed to use irrlicht directly
 654         threadid_t m_main_thread;
 655         // A reference to this can be returned when nothing is found, to avoid NULLs
 656         mutable ClientCached m_dummy_clientcached;
 657         // Cached textures and meshes
 658         mutable MutexedMap<std::string, ClientCached*> m_clientcached;
 659         // Queued clientcached fetches (to be processed by the main thread)
 660         mutable RequestQueue<std::string, ClientCached*, u8, u8> m_get_clientcached_queue;
 661 #endif
 662 };
 663
 664 IWritableItemDefManager* createItemDefManager()
 665 {
 666         return new CItemDefManager();
 667 }