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