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 "wieldmesh.h"
  31 #include "tile.h"
  32 #endif
  33 #include "log.h"
  34 #include "main.h" // g_settings
  35 #include "settings.h"
  36 #include "util/serialize.h"
  37 #include "util/container.h"
  38 #include "util/thread.h"
  39 #include <map>
  40 #include <set>
  41
  42 #ifdef __ANDROID__
  43 #include <GLES/gl.h>
  44 #endif
  45
  46 /*
  47         ItemDefinition
  48 */
  49 ItemDefinition::ItemDefinition()
  50 {
  51         resetInitial();
  52 }
  53
  54 ItemDefinition::ItemDefinition(const ItemDefinition &def)
  55 {
  56         resetInitial();
  57         *this = def;
  58 }
  59
  60 ItemDefinition& ItemDefinition::operator=(const ItemDefinition &def)
  61 {
  62         if(this == &def)
  63                 return *this;
  64
  65         reset();
  66
  67         type = def.type;
  68         name = def.name;
  69         description = def.description;
  70         inventory_image = def.inventory_image;
  71         wield_image = def.wield_image;
  72         wield_scale = def.wield_scale;
  73         stack_max = def.stack_max;
  74         usable = def.usable;
  75         liquids_pointable = def.liquids_pointable;
  76         if(def.tool_capabilities)
  77         {
  78                 tool_capabilities = new ToolCapabilities(
  79                                 *def.tool_capabilities);
  80         }
  81         groups = def.groups;
  82         node_placement_prediction = def.node_placement_prediction;
  83         sound_place = def.sound_place;
  84         range = def.range;
  85         return *this;
  86 }
  87
  88 ItemDefinition::~ItemDefinition()
  89 {
  90         reset();
  91 }
  92
  93 void ItemDefinition::resetInitial()
  94 {
  95         // Initialize pointers to NULL so reset() does not delete undefined pointers
  96         tool_capabilities = NULL;
  97         reset();
  98 }
  99
 100 void ItemDefinition::reset()
 101 {
 102         type = ITEM_NONE;
 103         name = "";
 104         description = "";
 105         inventory_image = "";
 106         wield_image = "";
 107         wield_scale = v3f(1.0, 1.0, 1.0);
 108         stack_max = 99;
 109         usable = false;
 110         liquids_pointable = false;
 111         if(tool_capabilities)
 112         {
 113                 delete tool_capabilities;
 114                 tool_capabilities = NULL;
 115         }
 116         groups.clear();
 117         sound_place = SimpleSoundSpec();
 118         range = -1;
 119
 120         node_placement_prediction = "";
 121 }
 122
 123 void ItemDefinition::serialize(std::ostream &os, u16 protocol_version) const
 124 {
 125         if(protocol_version <= 17)
 126                 writeU8(os, 1); // version
 127         else if(protocol_version <= 20)
 128                 writeU8(os, 2); // version
 129         else
 130                 writeU8(os, 3); // version
 131         writeU8(os, type);
 132         os<<serializeString(name);
 133         os<<serializeString(description);
 134         os<<serializeString(inventory_image);
 135         os<<serializeString(wield_image);
 136         writeV3F1000(os, wield_scale);
 137         writeS16(os, stack_max);
 138         writeU8(os, usable);
 139         writeU8(os, liquids_pointable);
 140         std::string tool_capabilities_s = "";
 141         if(tool_capabilities){
 142                 std::ostringstream tmp_os(std::ios::binary);
 143                 tool_capabilities->serialize(tmp_os, protocol_version);
 144                 tool_capabilities_s = tmp_os.str();
 145         }
 146         os<<serializeString(tool_capabilities_s);
 147         writeU16(os, groups.size());
 148         for(std::map<std::string, int>::const_iterator
 149                         i = groups.begin(); i != groups.end(); i++){
 150                 os<<serializeString(i->first);
 151                 writeS16(os, i->second);
 152         }
 153         os<<serializeString(node_placement_prediction);
 154         if(protocol_version > 17){
 155                 //serializeSimpleSoundSpec(sound_place, os);
 156                 os<<serializeString(sound_place.name);
 157                 writeF1000(os, sound_place.gain);
 158         }
 159         if(protocol_version > 20){
 160                 writeF1000(os, range);
 161         }
 162 }
 163
 164 void ItemDefinition::deSerialize(std::istream &is)
 165 {
 166         // Reset everything
 167         reset();
 168
 169         // Deserialize
 170         int version = readU8(is);
 171         if(version < 1 || version > 3)
 172                 throw SerializationError("unsupported ItemDefinition version");
 173         type = (enum ItemType)readU8(is);
 174         name = deSerializeString(is);
 175         description = deSerializeString(is);
 176         inventory_image = deSerializeString(is);
 177         wield_image = deSerializeString(is);
 178         wield_scale = readV3F1000(is);
 179         stack_max = readS16(is);
 180         usable = readU8(is);
 181         liquids_pointable = readU8(is);
 182         std::string tool_capabilities_s = deSerializeString(is);
 183         if(!tool_capabilities_s.empty())
 184         {
 185                 std::istringstream tmp_is(tool_capabilities_s, std::ios::binary);
 186                 tool_capabilities = new ToolCapabilities;
 187                 tool_capabilities->deSerialize(tmp_is);
 188         }
 189         groups.clear();
 190         u32 groups_size = readU16(is);
 191         for(u32 i=0; i<groups_size; i++){
 192                 std::string name = deSerializeString(is);
 193                 int value = readS16(is);
 194                 groups[name] = value;
 195         }
 196         if(version == 1){
 197                 // We cant be sure that node_placement_prediction is send in version 1
 198                 try{
 199                         node_placement_prediction = deSerializeString(is);
 200                 }catch(SerializationError &e) {};
 201                 // Set the old default sound
 202                 sound_place.name = "default_place_node";
 203                 sound_place.gain = 0.5;
 204         } else if(version >= 2) {
 205                 node_placement_prediction = deSerializeString(is);
 206                 //deserializeSimpleSoundSpec(sound_place, is);
 207                 sound_place.name = deSerializeString(is);
 208                 sound_place.gain = readF1000(is);
 209         }
 210         if(version == 3) {
 211                 range = readF1000(is);
 212         }
 213         // If you add anything here, insert it primarily inside the try-catch
 214         // block to not need to increase the version.
 215         try{
 216         }catch(SerializationError &e) {};
 217 }
 218
 219 /*
 220         CItemDefManager
 221 */
 222
 223 // SUGG: Support chains of aliases?
 224
 225 class CItemDefManager: public IWritableItemDefManager
 226 {
 227 #ifndef SERVER
 228         struct ClientCached
 229         {
 230                 video::ITexture *inventory_texture;
 231                 scene::IMesh *wield_mesh;
 232
 233                 ClientCached():
 234                         inventory_texture(NULL),
 235                         wield_mesh(NULL)
 236                 {}
 237         };
 238 #endif
 239
 240 public:
 241         CItemDefManager()
 242         {
 243
 244 #ifndef SERVER
 245                 m_main_thread = get_current_thread_id();
 246 #endif
 247                 clear();
 248         }
 249         virtual ~CItemDefManager()
 250         {
 251 #ifndef SERVER
 252                 const std::list<ClientCached*> &values = m_clientcached.getValues();
 253                 for(std::list<ClientCached*>::const_iterator
 254                                 i = values.begin(); i != values.end(); ++i)
 255                 {
 256                         ClientCached *cc = *i;
 257                         if (cc->wield_mesh)
 258                                 cc->wield_mesh->drop();
 259                         delete cc;
 260                 }
 261
 262 #endif
 263                 for (std::map<std::string, ItemDefinition*>::iterator iter =
 264                                 m_item_definitions.begin(); iter != m_item_definitions.end();
 265                                 iter ++) {
 266                         delete iter->second;
 267                 }
 268                 m_item_definitions.clear();
 269         }
 270         virtual const ItemDefinition& get(const std::string &name_) const
 271         {
 272                 // Convert name according to possible alias
 273                 std::string name = getAlias(name_);
 274                 // Get the definition
 275                 std::map<std::string, ItemDefinition*>::const_iterator i;
 276                 i = m_item_definitions.find(name);
 277                 if(i == m_item_definitions.end())
 278                         i = m_item_definitions.find("unknown");
 279                 assert(i != m_item_definitions.end());
 280                 return *(i->second);
 281         }
 282         virtual std::string getAlias(const std::string &name) const
 283         {
 284                 std::map<std::string, std::string>::const_iterator i;
 285                 i = m_aliases.find(name);
 286                 if(i != m_aliases.end())
 287                         return i->second;
 288                 return name;
 289         }
 290         virtual std::set<std::string> getAll() const
 291         {
 292                 std::set<std::string> result;
 293                 for(std::map<std::string, ItemDefinition*>::const_iterator
 294                                 i = m_item_definitions.begin();
 295                                 i != m_item_definitions.end(); i++)
 296                 {
 297                         result.insert(i->first);
 298                 }
 299                 for(std::map<std::string, std::string>::const_iterator
 300                                 i = m_aliases.begin();
 301                                 i != m_aliases.end(); i++)
 302                 {
 303                         result.insert(i->first);
 304                 }
 305                 return result;
 306         }
 307         virtual bool isKnown(const std::string &name_) const
 308         {
 309                 // Convert name according to possible alias
 310                 std::string name = getAlias(name_);
 311                 // Get the definition
 312                 std::map<std::string, ItemDefinition*>::const_iterator i;
 313                 return m_item_definitions.find(name) != m_item_definitions.end();
 314         }
 315 #ifndef SERVER
 316 public:
 317         ClientCached* createClientCachedDirect(const std::string &name,
 318                         IGameDef *gamedef) const
 319         {
 320                 infostream<<"Lazily creating item texture and mesh for \""
 321                                 <<name<<"\""<<std::endl;
 322
 323                 // This is not thread-safe
 324                 assert(get_current_thread_id() == m_main_thread);
 325
 326                 // Skip if already in cache
 327                 ClientCached *cc = NULL;
 328                 m_clientcached.get(name, &cc);
 329                 if(cc)
 330                         return cc;
 331
 332                 ITextureSource *tsrc = gamedef->getTextureSource();
 333                 INodeDefManager *nodedef = gamedef->getNodeDefManager();
 334                 const ItemDefinition &def = get(name);
 335
 336                 // Create new ClientCached
 337                 cc = new ClientCached();
 338
 339                 // Create an inventory texture
 340                 cc->inventory_texture = NULL;
 341                 if(def.inventory_image != "")
 342                         cc->inventory_texture = tsrc->getTexture(def.inventory_image);
 343
 344                 // Additional processing for nodes:
 345                 // - Create a wield mesh if WieldMeshSceneNode can't render
 346                 //   the node on its own.
 347                 // - If inventory_texture isn't set yet, create one using
 348                 //   render-to-texture.
 349                 if (def.type == ITEM_NODE) {
 350                         // Get node properties
 351                         content_t id = nodedef->getId(name);
 352                         const ContentFeatures &f = nodedef->get(id);
 353
 354                         bool need_rtt_mesh = cc->inventory_texture == NULL;
 355
 356                         // Keep this in sync with WieldMeshSceneNode::setItem()
 357                         bool need_wield_mesh =
 358                                 !(f.mesh_ptr[0] ||
 359                                   f.drawtype == NDT_NORMAL ||
 360                                   f.drawtype == NDT_ALLFACES ||
 361                                   f.drawtype == NDT_AIRLIKE);
 362
 363                         scene::IMesh *node_mesh = NULL;
 364
 365                         bool reenable_shaders = false;
 366
 367                         if (need_rtt_mesh || need_wield_mesh) {
 368                                 u8 param1 = 0;
 369                                 if (f.param_type == CPT_LIGHT)
 370                                         param1 = 0xee;
 371
 372                                 /*
 373                                         Make a mesh from the node
 374                                 */
 375                                 if (g_settings->getBool("enable_shaders")) {
 376                                         reenable_shaders = true;
 377                                         g_settings->setBool("enable_shaders", false);
 378                                 }
 379                                 MeshMakeData mesh_make_data(gamedef);
 380                                 u8 param2 = 0;
 381                                 if (f.param_type_2 == CPT2_WALLMOUNTED)
 382                                         param2 = 1;
 383                                 MapNode mesh_make_node(id, param1, param2);
 384                                 mesh_make_data.fillSingleNode(&mesh_make_node);
 385                                 MapBlockMesh mapblock_mesh(&mesh_make_data, v3s16(0, 0, 0));
 386                                 node_mesh = mapblock_mesh.getMesh();
 387                                 node_mesh->grab();
 388                                 video::SColor c(255, 255, 255, 255);
 389                                 setMeshColor(node_mesh, c);
 390
 391                                 // scale and translate the mesh so it's a
 392                                 // unit cube centered on the origin
 393                                 scaleMesh(node_mesh, v3f(1.0/BS, 1.0/BS, 1.0/BS));
 394                                 translateMesh(node_mesh, v3f(-1.0, -1.0, -1.0));
 395                         }
 396
 397                         /*
 398                                 Draw node mesh into a render target texture
 399                         */
 400                         if (need_rtt_mesh) {
 401                                 TextureFromMeshParams params;
 402                                 params.mesh = node_mesh;
 403                                 params.dim.set(64, 64);
 404                                 params.rtt_texture_name = "INVENTORY_"
 405                                         + def.name + "_RTT";
 406                                 params.delete_texture_on_shutdown = true;
 407                                 params.camera_position.set(0, 1.0, -1.5);
 408                                 params.camera_position.rotateXZBy(45);
 409                                 params.camera_lookat.set(0, 0, 0);
 410                                 // Set orthogonal projection
 411                                 params.camera_projection_matrix.buildProjectionMatrixOrthoLH(
 412                                                 1.65, 1.65, 0, 100);
 413                                 params.ambient_light.set(1.0, 0.2, 0.2, 0.2);
 414                                 params.light_position.set(10, 100, -50);
 415                                 params.light_color.set(1.0, 0.5, 0.5, 0.5);
 416                                 params.light_radius = 1000;
 417
 418 #ifdef __ANDROID__
 419                                 params.camera_position.set(0, -1.0, -1.5);
 420                                 params.camera_position.rotateXZBy(45);
 421                                 params.light_position.set(10, -100, -50);
 422 #endif
 423                                 cc->inventory_texture =
 424                                         tsrc->generateTextureFromMesh(params);
 425
 426                                 // render-to-target didn't work
 427                                 if (cc->inventory_texture == NULL) {
 428                                         cc->inventory_texture =
 429                                                 tsrc->getTexture(f.tiledef[0].name);
 430                                 }
 431                         }
 432
 433                         /*
 434                                 Use the node mesh as the wield mesh
 435                         */
 436                         if (need_wield_mesh) {
 437                                 cc->wield_mesh = node_mesh;
 438                                 cc->wield_mesh->grab();
 439
 440                                 // no way reference count can be smaller than 2 in this place!
 441                                 assert(cc->wield_mesh->getReferenceCount() >= 2);
 442                         }
 443
 444                         if (node_mesh)
 445                                 node_mesh->drop();
 446
 447                         if (reenable_shaders)
 448                                 g_settings->setBool("enable_shaders",true);
 449                 }
 450
 451                 // Put in cache
 452                 m_clientcached.set(name, cc);
 453
 454                 return cc;
 455         }
 456         ClientCached* getClientCached(const std::string &name,
 457                         IGameDef *gamedef) const
 458         {
 459                 ClientCached *cc = NULL;
 460                 m_clientcached.get(name, &cc);
 461                 if(cc)
 462                         return cc;
 463
 464                 if(get_current_thread_id() == m_main_thread)
 465                 {
 466                         return createClientCachedDirect(name, gamedef);
 467                 }
 468                 else
 469                 {
 470                         // We're gonna ask the result to be put into here
 471                         static ResultQueue<std::string, ClientCached*, u8, u8> result_queue;
 472
 473                         // Throw a request in
 474                         m_get_clientcached_queue.add(name, 0, 0, &result_queue);
 475                         try{
 476                                 while(true) {
 477                                         // Wait result for a second
 478                                         GetResult<std::string, ClientCached*, u8, u8>
 479                                                 result = result_queue.pop_front(1000);
 480
 481                                         if (result.key == name) {
 482                                                 return result.item;
 483                                         }
 484                                 }
 485                         }
 486                         catch(ItemNotFoundException &e)
 487                         {
 488                                 errorstream<<"Waiting for clientcached " << name << " timed out."<<std::endl;
 489                                 return &m_dummy_clientcached;
 490                         }
 491                 }
 492         }
 493         // Get item inventory texture
 494         virtual video::ITexture* getInventoryTexture(const std::string &name,
 495                         IGameDef *gamedef) const
 496         {
 497                 ClientCached *cc = getClientCached(name, gamedef);
 498                 if(!cc)
 499                         return NULL;
 500                 return cc->inventory_texture;
 501         }
 502         // Get item wield mesh
 503         virtual scene::IMesh* getWieldMesh(const std::string &name,
 504                         IGameDef *gamedef) const
 505         {
 506                 ClientCached *cc = getClientCached(name, gamedef);
 507                 if(!cc)
 508                         return NULL;
 509                 return cc->wield_mesh;
 510         }
 511 #endif
 512         void clear()
 513         {
 514                 for(std::map<std::string, ItemDefinition*>::const_iterator
 515                                 i = m_item_definitions.begin();
 516                                 i != m_item_definitions.end(); i++)
 517                 {
 518                         delete i->second;
 519                 }
 520                 m_item_definitions.clear();
 521                 m_aliases.clear();
 522
 523                 // Add the four builtin items:
 524                 //   "" is the hand
 525                 //   "unknown" is returned whenever an undefined item
 526                 //     is accessed (is also the unknown node)
 527                 //   "air" is the air node
 528                 //   "ignore" is the ignore node
 529
 530                 ItemDefinition* hand_def = new ItemDefinition;
 531                 hand_def->name = "";
 532                 hand_def->wield_image = "wieldhand.png";
 533                 hand_def->tool_capabilities = new ToolCapabilities;
 534                 m_item_definitions.insert(std::make_pair("", hand_def));
 535
 536                 ItemDefinition* unknown_def = new ItemDefinition;
 537                 unknown_def->type = ITEM_NODE;
 538                 unknown_def->name = "unknown";
 539                 m_item_definitions.insert(std::make_pair("unknown", unknown_def));
 540
 541                 ItemDefinition* air_def = new ItemDefinition;
 542                 air_def->type = ITEM_NODE;
 543                 air_def->name = "air";
 544                 m_item_definitions.insert(std::make_pair("air", air_def));
 545
 546                 ItemDefinition* ignore_def = new ItemDefinition;
 547                 ignore_def->type = ITEM_NODE;
 548                 ignore_def->name = "ignore";
 549                 m_item_definitions.insert(std::make_pair("ignore", ignore_def));
 550         }
 551         virtual void registerItem(const ItemDefinition &def)
 552         {
 553                 verbosestream<<"ItemDefManager: registering \""<<def.name<<"\""<<std::endl;
 554                 // Ensure that the "" item (the hand) always has ToolCapabilities
 555                 if(def.name == "")
 556                         assert(def.tool_capabilities != NULL);
 557
 558                 if(m_item_definitions.count(def.name) == 0)
 559                         m_item_definitions[def.name] = new ItemDefinition(def);
 560                 else
 561                         *(m_item_definitions[def.name]) = def;
 562
 563                 // Remove conflicting alias if it exists
 564                 bool alias_removed = (m_aliases.erase(def.name) != 0);
 565                 if(alias_removed)
 566                         infostream<<"ItemDefManager: erased alias "<<def.name
 567                                         <<" because item was defined"<<std::endl;
 568         }
 569         virtual void registerAlias(const std::string &name,
 570                         const std::string &convert_to)
 571         {
 572                 if(m_item_definitions.find(name) == m_item_definitions.end())
 573                 {
 574                         verbosestream<<"ItemDefManager: setting alias "<<name
 575                                 <<" -> "<<convert_to<<std::endl;
 576                         m_aliases[name] = convert_to;
 577                 }
 578         }
 579         void serialize(std::ostream &os, u16 protocol_version)
 580         {
 581                 writeU8(os, 0); // version
 582                 u16 count = m_item_definitions.size();
 583                 writeU16(os, count);
 584                 for(std::map<std::string, ItemDefinition*>::const_iterator
 585                                 i = m_item_definitions.begin();
 586                                 i != m_item_definitions.end(); i++)
 587                 {
 588                         ItemDefinition *def = i->second;
 589                         // Serialize ItemDefinition and write wrapped in a string
 590                         std::ostringstream tmp_os(std::ios::binary);
 591                         def->serialize(tmp_os, protocol_version);
 592                         os<<serializeString(tmp_os.str());
 593                 }
 594                 writeU16(os, m_aliases.size());
 595                 for(std::map<std::string, std::string>::const_iterator
 596                         i = m_aliases.begin(); i != m_aliases.end(); i++)
 597                 {
 598                         os<<serializeString(i->first);
 599                         os<<serializeString(i->second);
 600                 }
 601         }
 602         void deSerialize(std::istream &is)
 603         {
 604                 // Clear everything
 605                 clear();
 606                 // Deserialize
 607                 int version = readU8(is);
 608                 if(version != 0)
 609                         throw SerializationError("unsupported ItemDefManager version");
 610                 u16 count = readU16(is);
 611                 for(u16 i=0; i<count; i++)
 612                 {
 613                         // Deserialize a string and grab an ItemDefinition from it
 614                         std::istringstream tmp_is(deSerializeString(is), std::ios::binary);
 615                         ItemDefinition def;
 616                         def.deSerialize(tmp_is);
 617                         // Register
 618                         registerItem(def);
 619                 }
 620                 u16 num_aliases = readU16(is);
 621                 for(u16 i=0; i<num_aliases; i++)
 622                 {
 623                         std::string name = deSerializeString(is);
 624                         std::string convert_to = deSerializeString(is);
 625                         registerAlias(name, convert_to);
 626                 }
 627         }
 628         void processQueue(IGameDef *gamedef)
 629         {
 630 #ifndef SERVER
 631                 //NOTE this is only thread safe for ONE consumer thread!
 632                 while(!m_get_clientcached_queue.empty())
 633                 {
 634                         GetRequest<std::string, ClientCached*, u8, u8>
 635                                         request = m_get_clientcached_queue.pop();
 636
 637                         m_get_clientcached_queue.pushResult(request,
 638                                         createClientCachedDirect(request.key, gamedef));
 639                 }
 640 #endif
 641         }
 642 private:
 643         // Key is name
 644         std::map<std::string, ItemDefinition*> m_item_definitions;
 645         // Aliases
 646         std::map<std::string, std::string> m_aliases;
 647 #ifndef SERVER
 648         // The id of the thread that is allowed to use irrlicht directly
 649         threadid_t m_main_thread;
 650         // A reference to this can be returned when nothing is found, to avoid NULLs
 651         mutable ClientCached m_dummy_clientcached;
 652         // Cached textures and meshes
 653         mutable MutexedMap<std::string, ClientCached*> m_clientcached;
 654         // Queued clientcached fetches (to be processed by the main thread)
 655         mutable RequestQueue<std::string, ClientCached*, u8, u8> m_get_clientcached_queue;
 656 #endif
 657 };
 658
 659 IWritableItemDefManager* createItemDefManager()
 660 {
 661         return new CItemDefManager();
 662 }