src/inventory.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 General Public License as published by
   7 the Free Software Foundation; either version 2 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 General Public License for more details.
  14
  15 You should have received a copy of the GNU 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 /*
  21 (c) 2010 Perttu Ahola <celeron55@gmail.com>
  22 */
  23
  24 #include "inventory.h"
  25 #include "serialization.h"
  26 #include "utility.h"
  27 #include "debug.h"
  28 #include <sstream>
  29 #include "main.h"
  30 #include "serverobject.h"
  31
  32 /*
  33         InventoryItem
  34 */
  35
  36 InventoryItem::InventoryItem(u16 count)
  37 {
  38         m_count = count;
  39 }
  40
  41 InventoryItem::~InventoryItem()
  42 {
  43 }
  44
  45 InventoryItem* InventoryItem::deSerialize(std::istream &is)
  46 {
  47         DSTACK(__FUNCTION_NAME);
  48
  49         //is.imbue(std::locale("C"));
  50         // Read name
  51         std::string name;
  52         std::getline(is, name, ' ');
  53
  54         if(name == "MaterialItem")
  55         {
  56                 // u16 reads directly as a number (u8 doesn't)
  57                 u16 material;
  58                 is>>material;
  59                 u16 count;
  60                 is>>count;
  61                 if(material > 255)
  62                         throw SerializationError("Too large material number");
  63                 return new MaterialItem(material, count);
  64         }
  65         else if(name == "MBOItem")
  66         {
  67                 std::string inventorystring;
  68                 std::getline(is, inventorystring, '|');
  69                 return new MapBlockObjectItem(inventorystring);
  70         }
  71         else if(name == "CraftItem")
  72         {
  73                 std::string subname;
  74                 std::getline(is, subname, ' ');
  75                 u16 count;
  76                 is>>count;
  77                 return new CraftItem(subname, count);
  78         }
  79         else if(name == "ToolItem")
  80         {
  81                 std::string toolname;
  82                 std::getline(is, toolname, ' ');
  83                 u16 wear;
  84                 is>>wear;
  85                 return new ToolItem(toolname, wear);
  86         }
  87         else
  88         {
  89                 dstream<<"Unknown InventoryItem name=\""<<name<<"\""<<std::endl;
  90                 throw SerializationError("Unknown InventoryItem name");
  91         }
  92 }
  93
  94 ServerActiveObject* InventoryItem::createSAO(ServerEnvironment *env, u16 id, v3f pos)
  95 {
  96         /*
  97                 Create an ItemSAO
  98         */
  99         // Get item string
 100         std::ostringstream os(std::ios_base::binary);
 101         serialize(os);
 102         // Create object
 103         ServerActiveObject *obj = new ItemSAO(env, 0, pos, os.str());
 104         return obj;
 105 }
 106
 107 /*
 108         MaterialItem
 109 */
 110
 111 bool MaterialItem::isCookable()
 112 {
 113         if(m_content == CONTENT_TREE)
 114         {
 115                 return true;
 116         }
 117         else if(m_content == CONTENT_COBBLE)
 118         {
 119                 return true;
 120         }
 121         return false;
 122 }
 123
 124 InventoryItem *MaterialItem::createCookResult()
 125 {
 126         if(m_content == CONTENT_TREE)
 127         {
 128                 return new CraftItem("lump_of_coal", 1);
 129         }
 130         else if(m_content == CONTENT_COBBLE)
 131         {
 132                 return new MaterialItem(CONTENT_STONE, 1);
 133         }
 134         return NULL;
 135 }
 136
 137 /*
 138         CraftItem
 139 */
 140
 141 #ifndef SERVER
 142 video::ITexture * CraftItem::getImage()
 143 {
 144         if(g_texturesource == NULL)
 145                 return NULL;
 146
 147         std::string name;
 148
 149         if(m_subname == "Stick")
 150                 name = "stick.png";
 151         else if(m_subname == "lump_of_coal")
 152                 name = "lump_of_coal.png";
 153         else if(m_subname == "lump_of_iron")
 154                 name = "lump_of_iron.png";
 155         else if(m_subname == "steel_ingot")
 156                 name = "steel_ingot.png";
 157         else if(m_subname == "rat")
 158                 name = "rat.png";
 159         else
 160                 name = "cloud.png";
 161
 162         // Get such a texture
 163         //return g_irrlicht->getTexture(name);
 164         return g_texturesource->getTextureRaw(name);
 165 }
 166 #endif
 167
 168 ServerActiveObject* CraftItem::createSAO(ServerEnvironment *env, u16 id, v3f pos)
 169 {
 170         // Special cases
 171         if(m_subname == "rat")
 172         {
 173                 ServerActiveObject *obj = new RatSAO(env, id, pos);
 174                 return obj;
 175         }
 176         // Default
 177         else
 178         {
 179                 return InventoryItem::createSAO(env, id, pos);
 180         }
 181 }
 182
 183 bool CraftItem::isCookable()
 184 {
 185         if(m_subname == "lump_of_iron")
 186         {
 187                 return true;
 188         }
 189         return false;
 190 }
 191
 192 InventoryItem *CraftItem::createCookResult()
 193 {
 194         if(m_subname == "lump_of_iron")
 195         {
 196                 return new CraftItem("steel_ingot", 1);
 197         }
 198         return NULL;
 199 }
 200
 201 /*
 202         MapBlockObjectItem
 203         TODO: Remove
 204 */
 205 #ifndef SERVER
 206 video::ITexture * MapBlockObjectItem::getImage()
 207 {
 208         if(m_inventorystring.substr(0,3) == "Rat")
 209                 return g_texturesource->getTextureRaw("rat.png");
 210
 211         if(m_inventorystring.substr(0,4) == "Sign")
 212                 return g_texturesource->getTextureRaw("sign.png");
 213
 214         return NULL;
 215 }
 216 #endif
 217 std::string MapBlockObjectItem::getText()
 218 {
 219         if(m_inventorystring.substr(0,3) == "Rat")
 220                 return "";
 221
 222         if(m_inventorystring.substr(0,4) == "Sign")
 223                 return "";
 224
 225         return "obj";
 226 }
 227
 228 MapBlockObject * MapBlockObjectItem::createObject
 229                 (v3f pos, f32 player_yaw, f32 player_pitch)
 230 {
 231         std::istringstream is(m_inventorystring);
 232         std::string name;
 233         std::getline(is, name, ' ');
 234
 235         if(name == "None")
 236         {
 237                 return NULL;
 238         }
 239         else if(name == "Sign")
 240         {
 241                 std::string text;
 242                 std::getline(is, text, '|');
 243                 SignObject *obj = new SignObject(NULL, -1, pos);
 244                 obj->setText(text);
 245                 obj->setYaw(-player_yaw);
 246                 return obj;
 247         }
 248         else if(name == "Rat")
 249         {
 250                 RatObject *obj = new RatObject(NULL, -1, pos);
 251                 return obj;
 252         }
 253         else if(name == "ItemObj")
 254         {
 255                 /*
 256                         Now we are an inventory item containing the serialization
 257                         string of an object that contains the serialization
 258                         string of an inventory item. Fuck this.
 259                 */
 260                 //assert(0);
 261                 dstream<<__FUNCTION_NAME<<": WARNING: Ignoring ItemObj "
 262                                 <<"because an item-object should never be inside "
 263                                 <<"an object-item."<<std::endl;
 264                 return NULL;
 265         }
 266         else
 267         {
 268                 return NULL;
 269         }
 270 }
 271
 272 /*
 273         Inventory
 274 */
 275
 276 InventoryList::InventoryList(std::string name, u32 size)
 277 {
 278         m_name = name;
 279         m_size = size;
 280         clearItems();
 281 }
 282
 283 InventoryList::~InventoryList()
 284 {
 285         for(u32 i=0; i<m_items.size(); i++)
 286         {
 287                 if(m_items[i])
 288                         delete m_items[i];
 289         }
 290 }
 291
 292 void InventoryList::clearItems()
 293 {
 294         for(u32 i=0; i<m_items.size(); i++)
 295         {
 296                 if(m_items[i])
 297                         delete m_items[i];
 298         }
 299
 300         m_items.clear();
 301
 302         for(u32 i=0; i<m_size; i++)
 303         {
 304                 m_items.push_back(NULL);
 305         }
 306 }
 307
 308 void InventoryList::serialize(std::ostream &os)
 309 {
 310         //os.imbue(std::locale("C"));
 311
 312         for(u32 i=0; i<m_items.size(); i++)
 313         {
 314                 InventoryItem *item = m_items[i];
 315                 if(item != NULL)
 316                 {
 317                         os<<"Item ";
 318                         item->serialize(os);
 319                 }
 320                 else
 321                 {
 322                         os<<"Empty";
 323                 }
 324                 os<<"\n";
 325         }
 326
 327         os<<"EndInventoryList\n";
 328 }
 329
 330 void InventoryList::deSerialize(std::istream &is)
 331 {
 332         //is.imbue(std::locale("C"));
 333
 334         clearItems();
 335         u32 item_i = 0;
 336
 337         for(;;)
 338         {
 339                 std::string line;
 340                 std::getline(is, line, '\n');
 341
 342                 std::istringstream iss(line);
 343                 //iss.imbue(std::locale("C"));
 344
 345                 std::string name;
 346                 std::getline(iss, name, ' ');
 347
 348                 if(name == "EndInventoryList")
 349                 {
 350                         break;
 351                 }
 352                 // This is a temporary backwards compatibility fix
 353                 else if(name == "end")
 354                 {
 355                         break;
 356                 }
 357                 else if(name == "Item")
 358                 {
 359                         if(item_i > getSize() - 1)
 360                                 throw SerializationError("too many items");
 361                         InventoryItem *item = InventoryItem::deSerialize(iss);
 362                         m_items[item_i++] = item;
 363                 }
 364                 else if(name == "Empty")
 365                 {
 366                         if(item_i > getSize() - 1)
 367                                 throw SerializationError("too many items");
 368                         m_items[item_i++] = NULL;
 369                 }
 370                 else
 371                 {
 372                         throw SerializationError("Unknown inventory identifier");
 373                 }
 374         }
 375 }
 376
 377 InventoryList::InventoryList(const InventoryList &other)
 378 {
 379         /*
 380                 Do this so that the items get cloned. Otherwise the pointers
 381                 in the array will just get copied.
 382         */
 383         *this = other;
 384 }
 385
 386 InventoryList & InventoryList::operator = (const InventoryList &other)
 387 {
 388         m_name = other.m_name;
 389         m_size = other.m_size;
 390         clearItems();
 391         for(u32 i=0; i<other.m_items.size(); i++)
 392         {
 393                 InventoryItem *item = other.m_items[i];
 394                 if(item != NULL)
 395                 {
 396                         m_items[i] = item->clone();
 397                 }
 398         }
 399
 400         return *this;
 401 }
 402
 403 std::string InventoryList::getName()
 404 {
 405         return m_name;
 406 }
 407
 408 u32 InventoryList::getSize()
 409 {
 410         return m_items.size();
 411 }
 412
 413 u32 InventoryList::getUsedSlots()
 414 {
 415         u32 num = 0;
 416         for(u32 i=0; i<m_items.size(); i++)
 417         {
 418                 InventoryItem *item = m_items[i];
 419                 if(item != NULL)
 420                         num++;
 421         }
 422         return num;
 423 }
 424
 425 u32 InventoryList::getFreeSlots()
 426 {
 427         return getSize() - getUsedSlots();
 428 }
 429
 430 InventoryItem * InventoryList::getItem(u32 i)
 431 {
 432         if(i > m_items.size() - 1)
 433                 return NULL;
 434         return m_items[i];
 435 }
 436
 437 InventoryItem * InventoryList::changeItem(u32 i, InventoryItem *newitem)
 438 {
 439         assert(i < m_items.size());
 440
 441         InventoryItem *olditem = m_items[i];
 442         m_items[i] = newitem;
 443         return olditem;
 444 }
 445
 446 void InventoryList::deleteItem(u32 i)
 447 {
 448         assert(i < m_items.size());
 449         InventoryItem *item = changeItem(i, NULL);
 450         if(item)
 451                 delete item;
 452 }
 453
 454 InventoryItem * InventoryList::addItem(InventoryItem *newitem)
 455 {
 456         if(newitem == NULL)
 457                 return NULL;
 458
 459         /*
 460                 First try to find if it could be added to some existing items
 461         */
 462         for(u32 i=0; i<m_items.size(); i++)
 463         {
 464                 // Ignore empty slots
 465                 if(m_items[i] == NULL)
 466                         continue;
 467                 // Try adding
 468                 newitem = addItem(i, newitem);
 469                 if(newitem == NULL)
 470                         return NULL; // All was eaten
 471         }
 472
 473         /*
 474                 Then try to add it to empty slots
 475         */
 476         for(u32 i=0; i<m_items.size(); i++)
 477         {
 478                 // Ignore unempty slots
 479                 if(m_items[i] != NULL)
 480                         continue;
 481                 // Try adding
 482                 newitem = addItem(i, newitem);
 483                 if(newitem == NULL)
 484                         return NULL; // All was eaten
 485         }
 486
 487         // Return leftover
 488         return newitem;
 489 }
 490
 491 InventoryItem * InventoryList::addItem(u32 i, InventoryItem *newitem)
 492 {
 493         if(newitem == NULL)
 494                 return NULL;
 495
 496         // If it is an empty position, it's an easy job.
 497         InventoryItem *to_item = m_items[i];
 498         if(to_item == NULL)
 499         {
 500                 m_items[i] = newitem;
 501                 return NULL;
 502         }
 503
 504         // If not addable, return the item
 505         if(newitem->addableTo(to_item) == false)
 506                 return newitem;
 507
 508         // If the item fits fully in the slot, add counter and delete it
 509         if(newitem->getCount() <= to_item->freeSpace())
 510         {
 511                 to_item->add(newitem->getCount());
 512                 delete newitem;
 513                 return NULL;
 514         }
 515         // Else the item does not fit fully. Add all that fits and return
 516         // the rest.
 517         else
 518         {
 519                 u16 freespace = to_item->freeSpace();
 520                 to_item->add(freespace);
 521                 newitem->remove(freespace);
 522                 return newitem;
 523         }
 524 }
 525
 526 bool InventoryList::itemFits(u32 i, InventoryItem *newitem)
 527 {
 528         // If it is an empty position, it's an easy job.
 529         InventoryItem *to_item = m_items[i];
 530         if(to_item == NULL)
 531         {
 532                 return true;
 533         }
 534
 535         // If not addable, return the item
 536         if(newitem->addableTo(to_item) == false)
 537                 return false;
 538
 539         // If the item fits fully in the slot, add counter and delete it
 540         if(newitem->getCount() <= to_item->freeSpace())
 541         {
 542                 return true;
 543         }
 544
 545         return false;
 546 }
 547
 548 InventoryItem * InventoryList::takeItem(u32 i, u32 count)
 549 {
 550         if(count == 0)
 551                 return NULL;
 552
 553         InventoryItem *item = m_items[i];
 554         // If it is an empty position, return NULL
 555         if(item == NULL)
 556                 return NULL;
 557
 558         if(count >= item->getCount())
 559         {
 560                 // Get the item by swapping NULL to its place
 561                 return changeItem(i, NULL);
 562         }
 563         else
 564         {
 565                 InventoryItem *item2 = item->clone();
 566                 item->remove(count);
 567                 item2->setCount(count);
 568                 return item2;
 569         }
 570
 571         return false;
 572 }
 573
 574 void InventoryList::decrementMaterials(u16 count)
 575 {
 576         for(u32 i=0; i<m_items.size(); i++)
 577         {
 578                 InventoryItem *item = takeItem(i, count);
 579                 if(item)
 580                         delete item;
 581         }
 582 }
 583
 584 void InventoryList::print(std::ostream &o)
 585 {
 586         o<<"InventoryList:"<<std::endl;
 587         for(u32 i=0; i<m_items.size(); i++)
 588         {
 589                 InventoryItem *item = m_items[i];
 590                 if(item != NULL)
 591                 {
 592                         o<<i<<": ";
 593                         item->serialize(o);
 594                         o<<"\n";
 595                 }
 596         }
 597 }
 598
 599 /*
 600         Inventory
 601 */
 602
 603 Inventory::~Inventory()
 604 {
 605         clear();
 606 }
 607
 608 void Inventory::clear()
 609 {
 610         for(u32 i=0; i<m_lists.size(); i++)
 611         {
 612                 delete m_lists[i];
 613         }
 614         m_lists.clear();
 615 }
 616
 617 Inventory::Inventory()
 618 {
 619 }
 620
 621 Inventory::Inventory(const Inventory &other)
 622 {
 623         *this = other;
 624 }
 625
 626 Inventory & Inventory::operator = (const Inventory &other)
 627 {
 628         clear();
 629         for(u32 i=0; i<other.m_lists.size(); i++)
 630         {
 631                 m_lists.push_back(new InventoryList(*other.m_lists[i]));
 632         }
 633         return *this;
 634 }
 635
 636 void Inventory::serialize(std::ostream &os)
 637 {
 638         for(u32 i=0; i<m_lists.size(); i++)
 639         {
 640                 InventoryList *list = m_lists[i];
 641                 os<<"List "<<list->getName()<<" "<<list->getSize()<<"\n";
 642                 list->serialize(os);
 643         }
 644
 645         os<<"EndInventory\n";
 646 }
 647
 648 void Inventory::deSerialize(std::istream &is)
 649 {
 650         clear();
 651
 652         for(;;)
 653         {
 654                 std::string line;
 655                 std::getline(is, line, '\n');
 656
 657                 std::istringstream iss(line);
 658
 659                 std::string name;
 660                 std::getline(iss, name, ' ');
 661
 662                 if(name == "EndInventory")
 663                 {
 664                         break;
 665                 }
 666                 // This is a temporary backwards compatibility fix
 667                 else if(name == "end")
 668                 {
 669                         break;
 670                 }
 671                 else if(name == "List")
 672                 {
 673                         std::string listname;
 674                         u32 listsize;
 675
 676                         std::getline(iss, listname, ' ');
 677                         iss>>listsize;
 678
 679                         InventoryList *list = new InventoryList(listname, listsize);
 680                         list->deSerialize(is);
 681
 682                         m_lists.push_back(list);
 683                 }
 684                 else
 685                 {
 686                         throw SerializationError("Unknown inventory identifier");
 687                 }
 688         }
 689 }
 690
 691 InventoryList * Inventory::addList(const std::string &name, u32 size)
 692 {
 693         s32 i = getListIndex(name);
 694         if(i != -1)
 695         {
 696                 if(m_lists[i]->getSize() != size)
 697                 {
 698                         delete m_lists[i];
 699                         m_lists[i] = new InventoryList(name, size);
 700                 }
 701                 return m_lists[i];
 702         }
 703         else
 704         {
 705                 m_lists.push_back(new InventoryList(name, size));
 706                 return m_lists.getLast();
 707         }
 708 }
 709
 710 InventoryList * Inventory::getList(const std::string &name)
 711 {
 712         s32 i = getListIndex(name);
 713         if(i == -1)
 714                 return NULL;
 715         return m_lists[i];
 716 }
 717
 718 s32 Inventory::getListIndex(const std::string &name)
 719 {
 720         for(u32 i=0; i<m_lists.size(); i++)
 721         {
 722                 if(m_lists[i]->getName() == name)
 723                         return i;
 724         }
 725         return -1;
 726 }
 727
 728 /*
 729         InventoryAction
 730 */
 731
 732 InventoryAction * InventoryAction::deSerialize(std::istream &is)
 733 {
 734         std::string type;
 735         std::getline(is, type, ' ');
 736
 737         InventoryAction *a = NULL;
 738
 739         if(type == "Move")
 740         {
 741                 a = new IMoveAction(is);
 742         }
 743
 744         return a;
 745 }
 746
 747 void IMoveAction::apply(InventoryContext *c, InventoryManager *mgr)
 748 {
 749 #if 1
 750
 751         /*dstream<<"from_inv="<<from_inv<<" to_inv="<<to_inv<<std::endl;
 752         dstream<<"from_list="<<from_list<<" to_list="<<to_list<<std::endl;
 753         dstream<<"from_i="<<from_i<<" to_i="<<to_i<<std::endl;*/
 754
 755         Inventory *inv_from = mgr->getInventory(c, from_inv);
 756         Inventory *inv_to = mgr->getInventory(c, to_inv);
 757
 758         if(!inv_from || !inv_to)
 759         {
 760                 dstream<<__FUNCTION_NAME<<": Operation not allowed "
 761                                 <<"(inventories not found)"<<std::endl;
 762                 return;
 763         }
 764
 765         InventoryList *list_from = inv_from->getList(from_list);
 766         InventoryList *list_to = inv_to->getList(to_list);
 767
 768         /*dstream<<"list_from="<<list_from<<" list_to="<<list_to
 769                         <<std::endl;*/
 770         /*if(list_from)
 771                 dstream<<" list_from->getItem(from_i)="<<list_from->getItem(from_i)
 772                                 <<std::endl;
 773         if(list_to)
 774                 dstream<<" list_to->getItem(to_i)="<<list_to->getItem(to_i)
 775                                 <<std::endl;*/
 776
 777         /*
 778                 If a list doesn't exist or the source item doesn't exist
 779         */
 780         if(!list_from || !list_to)
 781         {
 782                 dstream<<__FUNCTION_NAME<<": Operation not allowed "
 783                                 <<"(a list doesn't exist)"
 784                                 <<std::endl;
 785                 return;
 786         }
 787         if(list_from->getItem(from_i) == NULL)
 788         {
 789                 dstream<<__FUNCTION_NAME<<": Operation not allowed "
 790                                 <<"(the source item doesn't exist)"
 791                                 <<std::endl;
 792                 return;
 793         }
 794         /*
 795                 If the source and the destination slots are the same
 796         */
 797         if(inv_from == inv_to && list_from == list_to && from_i == to_i)
 798         {
 799                 dstream<<__FUNCTION_NAME<<": Operation not allowed "
 800                                 <<"(source and the destination slots are the same)"<<std::endl;
 801                 return;
 802         }
 803
 804         // Take item from source list
 805         InventoryItem *item1 = NULL;
 806         if(count == 0)
 807                 item1 = list_from->changeItem(from_i, NULL);
 808         else
 809                 item1 = list_from->takeItem(from_i, count);
 810
 811         // Try to add the item to destination list
 812         InventoryItem *olditem = item1;
 813         item1 = list_to->addItem(to_i, item1);
 814
 815         // If something is returned, the item was not fully added
 816         if(item1 != NULL)
 817         {
 818                 // If olditem is returned, nothing was added.
 819                 bool nothing_added = (item1 == olditem);
 820
 821                 // If something else is returned, part of the item was left unadded.
 822                 // Add the other part back to the source item
 823                 list_from->addItem(from_i, item1);
 824
 825                 // If olditem is returned, nothing was added.
 826                 // Swap the items
 827                 if(nothing_added)
 828                 {
 829                         // Take item from source list
 830                         item1 = list_from->changeItem(from_i, NULL);
 831                         // Adding was not possible, swap the items.
 832                         InventoryItem *item2 = list_to->changeItem(to_i, item1);
 833                         // Put item from destination list to the source list
 834                         list_from->changeItem(from_i, item2);
 835                 }
 836         }
 837
 838         mgr->inventoryModified(c, from_inv);
 839         if(from_inv != to_inv)
 840                 mgr->inventoryModified(c, to_inv);
 841 #endif
 842 }
 843
 844 /*
 845         Craft checking system
 846 */
 847
 848 bool ItemSpec::checkItem(InventoryItem *item)
 849 {
 850         if(type == ITEM_NONE)
 851         {
 852                 // Has to be no item
 853                 if(item != NULL)
 854                         return false;
 855                 return true;
 856         }
 857
 858         // There should be an item
 859         if(item == NULL)
 860                 return false;
 861
 862         std::string itemname = item->getName();
 863
 864         if(type == ITEM_MATERIAL)
 865         {
 866                 if(itemname != "MaterialItem")
 867                         return false;
 868                 MaterialItem *mitem = (MaterialItem*)item;
 869                 if(mitem->getMaterial() != num)
 870                         return false;
 871         }
 872         else if(type == ITEM_CRAFT)
 873         {
 874                 if(itemname != "CraftItem")
 875                         return false;
 876                 CraftItem *mitem = (CraftItem*)item;
 877                 if(mitem->getSubName() != name)
 878                         return false;
 879         }
 880         else if(type == ITEM_TOOL)
 881         {
 882                 // Not supported yet
 883                 assert(0);
 884         }
 885         else if(type == ITEM_MBO)
 886         {
 887                 // Not supported yet
 888                 assert(0);
 889         }
 890         else
 891         {
 892                 // Not supported yet
 893                 assert(0);
 894         }
 895         return true;
 896 }
 897
 898 bool checkItemCombination(InventoryItem **items, ItemSpec *specs)
 899 {
 900         u16 items_min_x = 100;
 901         u16 items_max_x = 100;
 902         u16 items_min_y = 100;
 903         u16 items_max_y = 100;
 904         for(u16 y=0; y<3; y++)
 905         for(u16 x=0; x<3; x++)
 906         {
 907                 if(items[y*3 + x] == NULL)
 908                         continue;
 909                 if(items_min_x == 100 || x < items_min_x)
 910                         items_min_x = x;
 911                 if(items_min_y == 100 || y < items_min_y)
 912                         items_min_y = y;
 913                 if(items_max_x == 100 || x > items_max_x)
 914                         items_max_x = x;
 915                 if(items_max_y == 100 || y > items_max_y)
 916                         items_max_y = y;
 917         }
 918         // No items at all, just return false
 919         if(items_min_x == 100)
 920                 return false;
 921
 922         u16 items_w = items_max_x - items_min_x + 1;
 923         u16 items_h = items_max_y - items_min_y + 1;
 924
 925         u16 specs_min_x = 100;
 926         u16 specs_max_x = 100;
 927         u16 specs_min_y = 100;
 928         u16 specs_max_y = 100;
 929         for(u16 y=0; y<3; y++)
 930         for(u16 x=0; x<3; x++)
 931         {
 932                 if(specs[y*3 + x].type == ITEM_NONE)
 933                         continue;
 934                 if(specs_min_x == 100 || x < specs_min_x)
 935                         specs_min_x = x;
 936                 if(specs_min_y == 100 || y < specs_min_y)
 937                         specs_min_y = y;
 938                 if(specs_max_x == 100 || x > specs_max_x)
 939                         specs_max_x = x;
 940                 if(specs_max_y == 100 || y > specs_max_y)
 941                         specs_max_y = y;
 942         }
 943         // No specs at all, just return false
 944         if(specs_min_x == 100)
 945                 return false;
 946
 947         u16 specs_w = specs_max_x - specs_min_x + 1;
 948         u16 specs_h = specs_max_y - specs_min_y + 1;
 949
 950         // Different sizes
 951         if(items_w != specs_w || items_h != specs_h)
 952                 return false;
 953
 954         for(u16 y=0; y<specs_h; y++)
 955         for(u16 x=0; x<specs_w; x++)
 956         {
 957                 u16 items_x = items_min_x + x;
 958                 u16 items_y = items_min_y + y;
 959                 u16 specs_x = specs_min_x + x;
 960                 u16 specs_y = specs_min_y + y;
 961                 InventoryItem *item = items[items_y * 3 + items_x];
 962                 ItemSpec &spec = specs[specs_y * 3 + specs_x];
 963
 964                 if(spec.checkItem(item) == false)
 965                         return false;
 966         }
 967
 968         return true;
 969 }
 970
 971 //END