src/inventorymanager.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "inventorymanager.h"
  21 #include "log.h"
  22 #include "environment.h"
  23 #include "scripting_game.h"
  24 #include "serverobject.h"
  25 #include "settings.h"
  26 #include "craftdef.h"
  27 #include "rollback_interface.h"
  28 #include "strfnd.h"
  29
  30 #define PP(x) "("<<(x).X<<","<<(x).Y<<","<<(x).Z<<")"
  31
  32 #define PLAYER_TO_SA(p)   p->getEnv()->getScriptIface()
  33
  34 /*
  35         InventoryLocation
  36 */
  37
  38 std::string InventoryLocation::dump() const
  39 {
  40         std::ostringstream os(std::ios::binary);
  41         serialize(os);
  42         return os.str();
  43 }
  44
  45 void InventoryLocation::serialize(std::ostream &os) const
  46 {
  47         switch(type){
  48         case InventoryLocation::UNDEFINED:
  49                 os<<"undefined";
  50                 break;
  51         case InventoryLocation::CURRENT_PLAYER:
  52                 os<<"current_player";
  53                 break;
  54         case InventoryLocation::PLAYER:
  55                 os<<"player:"<<name;
  56                 break;
  57         case InventoryLocation::NODEMETA:
  58                 os<<"nodemeta:"<<p.X<<","<<p.Y<<","<<p.Z;
  59                 break;
  60         case InventoryLocation::DETACHED:
  61                 os<<"detached:"<<name;
  62                 break;
  63         default:
  64                 FATAL_ERROR("Unhandled inventory location type");
  65         }
  66 }
  67
  68 void InventoryLocation::deSerialize(std::istream &is)
  69 {
  70         std::string tname;
  71         std::getline(is, tname, ':');
  72         if(tname == "undefined")
  73         {
  74                 type = InventoryLocation::UNDEFINED;
  75         }
  76         else if(tname == "current_player")
  77         {
  78                 type = InventoryLocation::CURRENT_PLAYER;
  79         }
  80         else if(tname == "player")
  81         {
  82                 type = InventoryLocation::PLAYER;
  83                 std::getline(is, name, '\n');
  84         }
  85         else if(tname == "nodemeta")
  86         {
  87                 type = InventoryLocation::NODEMETA;
  88                 std::string pos;
  89                 std::getline(is, pos, '\n');
  90                 Strfnd fn(pos);
  91                 p.X = stoi(fn.next(","));
  92                 p.Y = stoi(fn.next(","));
  93                 p.Z = stoi(fn.next(","));
  94         }
  95         else if(tname == "detached")
  96         {
  97                 type = InventoryLocation::DETACHED;
  98                 std::getline(is, name, '\n');
  99         }
 100         else
 101         {
 102                 infostream<<"Unknown InventoryLocation type=\""<<tname<<"\""<<std::endl;
 103                 throw SerializationError("Unknown InventoryLocation type");
 104         }
 105 }
 106
 107 void InventoryLocation::deSerialize(std::string s)
 108 {
 109         std::istringstream is(s, std::ios::binary);
 110         deSerialize(is);
 111 }
 112
 113 /*
 114         InventoryAction
 115 */
 116
 117 InventoryAction * InventoryAction::deSerialize(std::istream &is)
 118 {
 119         std::string type;
 120         std::getline(is, type, ' ');
 121
 122         InventoryAction *a = NULL;
 123
 124         if (type == "Move") {
 125                 a = new IMoveAction(is, false);
 126         } else if (type == "MoveSomewhere") {
 127                 a = new IMoveAction(is, true);
 128         } else if (type == "Drop") {
 129                 a = new IDropAction(is);
 130         } else if(type == "Craft") {
 131                 a = new ICraftAction(is);
 132         }
 133
 134         return a;
 135 }
 136
 137 /*
 138         IMoveAction
 139 */
 140
 141 IMoveAction::IMoveAction(std::istream &is, bool somewhere)
 142 {
 143         std::string ts;
 144         move_somewhere = somewhere;
 145         caused_by_move_somewhere = false;
 146         move_count = 0;
 147
 148         std::getline(is, ts, ' ');
 149         count = stoi(ts);
 150
 151         std::getline(is, ts, ' ');
 152         from_inv.deSerialize(ts);
 153
 154         std::getline(is, from_list, ' ');
 155
 156         std::getline(is, ts, ' ');
 157         from_i = stoi(ts);
 158
 159         std::getline(is, ts, ' ');
 160         to_inv.deSerialize(ts);
 161
 162         std::getline(is, to_list, ' ');
 163
 164         if (!somewhere) {
 165                 std::getline(is, ts, ' ');
 166                 to_i = stoi(ts);
 167         }
 168 }
 169
 170 void IMoveAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGameDef *gamedef)
 171 {
 172         Inventory *inv_from = mgr->getInventory(from_inv);
 173         Inventory *inv_to = mgr->getInventory(to_inv);
 174
 175         if (!inv_from) {
 176                 infostream << "IMoveAction::apply(): FAIL: source inventory not found: "
 177                         << "from_inv=\""<<from_inv.dump() << "\""
 178                         << ", to_inv=\"" << to_inv.dump() << "\"" << std::endl;
 179                 return;
 180         }
 181         if (!inv_to) {
 182                 infostream << "IMoveAction::apply(): FAIL: destination inventory not found: "
 183                         << "from_inv=\"" << from_inv.dump() << "\""
 184                         << ", to_inv=\"" << to_inv.dump() << "\"" << std::endl;
 185                 return;
 186         }
 187
 188         InventoryList *list_from = inv_from->getList(from_list);
 189         InventoryList *list_to = inv_to->getList(to_list);
 190
 191         /*
 192                 If a list doesn't exist or the source item doesn't exist
 193         */
 194         if (!list_from) {
 195                 infostream << "IMoveAction::apply(): FAIL: source list not found: "
 196                         << "from_inv=\"" << from_inv.dump() << "\""
 197                         << ", from_list=\"" << from_list << "\"" << std::endl;
 198                 return;
 199         }
 200         if (!list_to) {
 201                 infostream << "IMoveAction::apply(): FAIL: destination list not found: "
 202                         << "to_inv=\""<<to_inv.dump() << "\""
 203                         << ", to_list=\"" << to_list << "\"" << std::endl;
 204                 return;
 205         }
 206
 207         if (move_somewhere) {
 208                 s16 old_to_i = to_i;
 209                 u16 old_count = count;
 210                 caused_by_move_somewhere = true;
 211                 move_somewhere = false;
 212
 213                 infostream << "IMoveAction::apply(): moving item somewhere"
 214                         << " msom=" << move_somewhere
 215                         << " count=" << count
 216                         << " from inv=\"" << from_inv.dump() << "\""
 217                         << " list=\"" << from_list << "\""
 218                         << " i=" << from_i
 219                         << " to inv=\"" << to_inv.dump() << "\""
 220                         << " list=\"" << to_list << "\""
 221                         << std::endl;
 222
 223                 // Try to add the item to destination list
 224                 s16 dest_size = list_to->getSize();
 225                 // First try all the non-empty slots
 226                 for (s16 dest_i = 0; dest_i < dest_size && count > 0; dest_i++) {
 227                         if (!list_to->getItem(dest_i).empty()) {
 228                                 to_i = dest_i;
 229                                 apply(mgr, player, gamedef);
 230                                 count -= move_count;
 231                         }
 232                 }
 233
 234                 // Then try all the empty ones
 235                 for (s16 dest_i = 0; dest_i < dest_size && count > 0; dest_i++) {
 236                         if (list_to->getItem(dest_i).empty()) {
 237                                 to_i = dest_i;
 238                                 apply(mgr, player, gamedef);
 239                                 count -= move_count;
 240                         }
 241                 }
 242
 243                 to_i = old_to_i;
 244                 count = old_count;
 245                 caused_by_move_somewhere = false;
 246                 move_somewhere = true;
 247                 return;
 248         }
 249
 250         if ((u16)to_i > list_to->getSize()) {
 251                 infostream << "IMoveAction::apply(): FAIL: destination index out of bounds: "
 252                         << "to_i=" << to_i
 253                         << ", size=" << list_to->getSize() << std::endl;
 254                 return;
 255         }
 256         /*
 257                 Do not handle rollback if both inventories are that of the same player
 258         */
 259         bool ignore_rollback = (
 260                 from_inv.type == InventoryLocation::PLAYER &&
 261                 to_inv.type == InventoryLocation::PLAYER &&
 262                 from_inv.name == to_inv.name);
 263
 264         /*
 265                 Collect information of endpoints
 266         */
 267
 268         int try_take_count = count;
 269         if(try_take_count == 0)
 270                 try_take_count = list_from->getItem(from_i).count;
 271
 272         int src_can_take_count = 0xffff;
 273         int dst_can_put_count = 0xffff;
 274
 275         /* Query detached inventories */
 276
 277         // Move occurs in the same detached inventory
 278         if(from_inv.type == InventoryLocation::DETACHED &&
 279                         to_inv.type == InventoryLocation::DETACHED &&
 280                         from_inv.name == to_inv.name)
 281         {
 282                 src_can_take_count = PLAYER_TO_SA(player)->detached_inventory_AllowMove(
 283                                 from_inv.name, from_list, from_i,
 284                                 to_list, to_i, try_take_count, player);
 285                 dst_can_put_count = src_can_take_count;
 286         }
 287         else
 288         {
 289                 // Destination is detached
 290                 if(to_inv.type == InventoryLocation::DETACHED)
 291                 {
 292                         ItemStack src_item = list_from->getItem(from_i);
 293                         src_item.count = try_take_count;
 294                         dst_can_put_count = PLAYER_TO_SA(player)->detached_inventory_AllowPut(
 295                                         to_inv.name, to_list, to_i, src_item, player);
 296                 }
 297                 // Source is detached
 298                 if(from_inv.type == InventoryLocation::DETACHED)
 299                 {
 300                         ItemStack src_item = list_from->getItem(from_i);
 301                         src_item.count = try_take_count;
 302                         src_can_take_count = PLAYER_TO_SA(player)->detached_inventory_AllowTake(
 303                                         from_inv.name, from_list, from_i, src_item, player);
 304                 }
 305         }
 306
 307         /* Query node metadata inventories */
 308
 309         // Both endpoints are nodemeta
 310         // Move occurs in the same nodemeta inventory
 311         if(from_inv.type == InventoryLocation::NODEMETA &&
 312                         to_inv.type == InventoryLocation::NODEMETA &&
 313                         from_inv.p == to_inv.p)
 314         {
 315                 src_can_take_count = PLAYER_TO_SA(player)->nodemeta_inventory_AllowMove(
 316                                 from_inv.p, from_list, from_i,
 317                                 to_list, to_i, try_take_count, player);
 318                 dst_can_put_count = src_can_take_count;
 319         }
 320         else
 321         {
 322                 // Destination is nodemeta
 323                 if(to_inv.type == InventoryLocation::NODEMETA)
 324                 {
 325                         ItemStack src_item = list_from->getItem(from_i);
 326                         src_item.count = try_take_count;
 327                         dst_can_put_count = PLAYER_TO_SA(player)->nodemeta_inventory_AllowPut(
 328                                         to_inv.p, to_list, to_i, src_item, player);
 329                 }
 330                 // Source is nodemeta
 331                 if(from_inv.type == InventoryLocation::NODEMETA)
 332                 {
 333                         ItemStack src_item = list_from->getItem(from_i);
 334                         src_item.count = try_take_count;
 335                         src_can_take_count = PLAYER_TO_SA(player)->nodemeta_inventory_AllowTake(
 336                                         from_inv.p, from_list, from_i, src_item, player);
 337                 }
 338         }
 339
 340         int old_count = count;
 341
 342         /* Modify count according to collected data */
 343         count = try_take_count;
 344         if(src_can_take_count != -1 && count > src_can_take_count)
 345                 count = src_can_take_count;
 346         if(dst_can_put_count != -1 && count > dst_can_put_count)
 347                 count = dst_can_put_count;
 348         /* Limit according to source item count */
 349         if(count > list_from->getItem(from_i).count)
 350                 count = list_from->getItem(from_i).count;
 351
 352         /* If no items will be moved, don't go further */
 353         if(count == 0)
 354         {
 355                 infostream<<"IMoveAction::apply(): move was completely disallowed:"
 356                                 <<" count="<<old_count
 357                                 <<" from inv=\""<<from_inv.dump()<<"\""
 358                                 <<" list=\""<<from_list<<"\""
 359                                 <<" i="<<from_i
 360                                 <<" to inv=\""<<to_inv.dump()<<"\""
 361                                 <<" list=\""<<to_list<<"\""
 362                                 <<" i="<<to_i
 363                                 <<std::endl;
 364                 return;
 365         }
 366
 367         ItemStack src_item = list_from->getItem(from_i);
 368         src_item.count = count;
 369         ItemStack from_stack_was = list_from->getItem(from_i);
 370         ItemStack to_stack_was = list_to->getItem(to_i);
 371
 372         /*
 373                 Perform actual move
 374
 375                 If something is wrong (source item is empty, destination is the
 376                 same as source), nothing happens
 377         */
 378         move_count = list_from->moveItem(from_i,
 379                 list_to, to_i, count, !caused_by_move_somewhere);
 380
 381         // If source is infinite, reset it's stack
 382         if(src_can_take_count == -1){
 383                 // If destination stack is of different type and there are leftover
 384                 // items, attempt to put the leftover items to a different place in the
 385                 // destination inventory.
 386                 // The client-side GUI will try to guess if this happens.
 387                 if(from_stack_was.name != to_stack_was.name){
 388                         for(u32 i=0; i<list_to->getSize(); i++){
 389                                 if(list_to->getItem(i).empty()){
 390                                         list_to->changeItem(i, to_stack_was);
 391                                         break;
 392                                 }
 393                         }
 394                 }
 395                 list_from->deleteItem(from_i);
 396                 list_from->addItem(from_i, from_stack_was);
 397         }
 398         // If destination is infinite, reset it's stack and take count from source
 399         if(dst_can_put_count == -1){
 400                 list_to->deleteItem(to_i);
 401                 list_to->addItem(to_i, to_stack_was);
 402                 list_from->deleteItem(from_i);
 403                 list_from->addItem(from_i, from_stack_was);
 404                 list_from->takeItem(from_i, count);
 405         }
 406
 407         infostream << "IMoveAction::apply(): moved"
 408                         << " msom=" << move_somewhere
 409                         << " caused=" << caused_by_move_somewhere
 410                         << " count=" << count
 411                         << " from inv=\"" << from_inv.dump() << "\""
 412                         << " list=\"" << from_list << "\""
 413                         << " i=" << from_i
 414                         << " to inv=\"" << to_inv.dump() << "\""
 415                         << " list=\"" << to_list << "\""
 416                         << " i=" << to_i
 417                         << std::endl;
 418
 419         /*
 420                 Record rollback information
 421         */
 422         if(!ignore_rollback && gamedef->rollback())
 423         {
 424                 IRollbackManager *rollback = gamedef->rollback();
 425
 426                 // If source is not infinite, record item take
 427                 if(src_can_take_count != -1){
 428                         RollbackAction action;
 429                         std::string loc;
 430                         {
 431                                 std::ostringstream os(std::ios::binary);
 432                                 from_inv.serialize(os);
 433                                 loc = os.str();
 434                         }
 435                         action.setModifyInventoryStack(loc, from_list, from_i, false,
 436                                         src_item);
 437                         rollback->reportAction(action);
 438                 }
 439                 // If destination is not infinite, record item put
 440                 if(dst_can_put_count != -1){
 441                         RollbackAction action;
 442                         std::string loc;
 443                         {
 444                                 std::ostringstream os(std::ios::binary);
 445                                 to_inv.serialize(os);
 446                                 loc = os.str();
 447                         }
 448                         action.setModifyInventoryStack(loc, to_list, to_i, true,
 449                                         src_item);
 450                         rollback->reportAction(action);
 451                 }
 452         }
 453
 454         /*
 455                 Report move to endpoints
 456         */
 457
 458         /* Detached inventories */
 459
 460         // Both endpoints are same detached
 461         if(from_inv.type == InventoryLocation::DETACHED &&
 462                         to_inv.type == InventoryLocation::DETACHED &&
 463                         from_inv.name == to_inv.name)
 464         {
 465                 PLAYER_TO_SA(player)->detached_inventory_OnMove(
 466                                 from_inv.name, from_list, from_i,
 467                                 to_list, to_i, count, player);
 468         }
 469         else
 470         {
 471                 // Destination is detached
 472                 if(to_inv.type == InventoryLocation::DETACHED)
 473                 {
 474                         PLAYER_TO_SA(player)->detached_inventory_OnPut(
 475                                         to_inv.name, to_list, to_i, src_item, player);
 476                 }
 477                 // Source is detached
 478                 if(from_inv.type == InventoryLocation::DETACHED)
 479                 {
 480                         PLAYER_TO_SA(player)->detached_inventory_OnTake(
 481                                         from_inv.name, from_list, from_i, src_item, player);
 482                 }
 483         }
 484
 485         /* Node metadata inventories */
 486
 487         // Both endpoints are same nodemeta
 488         if(from_inv.type == InventoryLocation::NODEMETA &&
 489                         to_inv.type == InventoryLocation::NODEMETA &&
 490                         from_inv.p == to_inv.p)
 491         {
 492                 PLAYER_TO_SA(player)->nodemeta_inventory_OnMove(
 493                                 from_inv.p, from_list, from_i,
 494                                 to_list, to_i, count, player);
 495         }
 496         else{
 497                 // Destination is nodemeta
 498                 if(to_inv.type == InventoryLocation::NODEMETA)
 499                 {
 500                         PLAYER_TO_SA(player)->nodemeta_inventory_OnPut(
 501                                         to_inv.p, to_list, to_i, src_item, player);
 502                 }
 503                 // Source is nodemeta
 504                 else if(from_inv.type == InventoryLocation::NODEMETA)
 505                 {
 506                         PLAYER_TO_SA(player)->nodemeta_inventory_OnTake(
 507                                         from_inv.p, from_list, from_i, src_item, player);
 508                 }
 509         }
 510
 511         mgr->setInventoryModified(from_inv, false);
 512         if(inv_from != inv_to)
 513                 mgr->setInventoryModified(to_inv, false);
 514 }
 515
 516 void IMoveAction::clientApply(InventoryManager *mgr, IGameDef *gamedef)
 517 {
 518         // Optional InventoryAction operation that is run on the client
 519         // to make lag less apparent.
 520
 521         Inventory *inv_from = mgr->getInventory(from_inv);
 522         Inventory *inv_to = mgr->getInventory(to_inv);
 523         if(!inv_from || !inv_to)
 524                 return;
 525
 526         InventoryLocation current_player;
 527         current_player.setCurrentPlayer();
 528         Inventory *inv_player = mgr->getInventory(current_player);
 529         if(inv_from != inv_player || inv_to != inv_player)
 530                 return;
 531
 532         InventoryList *list_from = inv_from->getList(from_list);
 533         InventoryList *list_to = inv_to->getList(to_list);
 534         if(!list_from || !list_to)
 535                 return;
 536
 537         if (!move_somewhere)
 538                 list_from->moveItem(from_i, list_to, to_i, count);
 539         else
 540                 list_from->moveItemSomewhere(from_i, list_to, count);
 541
 542         mgr->setInventoryModified(from_inv);
 543         if(inv_from != inv_to)
 544                 mgr->setInventoryModified(to_inv);
 545 }
 546
 547 /*
 548         IDropAction
 549 */
 550
 551 IDropAction::IDropAction(std::istream &is)
 552 {
 553         std::string ts;
 554
 555         std::getline(is, ts, ' ');
 556         count = stoi(ts);
 557
 558         std::getline(is, ts, ' ');
 559         from_inv.deSerialize(ts);
 560
 561         std::getline(is, from_list, ' ');
 562
 563         std::getline(is, ts, ' ');
 564         from_i = stoi(ts);
 565 }
 566
 567 void IDropAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGameDef *gamedef)
 568 {
 569         Inventory *inv_from = mgr->getInventory(from_inv);
 570
 571         if(!inv_from){
 572                 infostream<<"IDropAction::apply(): FAIL: source inventory not found: "
 573                                 <<"from_inv=\""<<from_inv.dump()<<"\""<<std::endl;
 574                 return;
 575         }
 576
 577         InventoryList *list_from = inv_from->getList(from_list);
 578
 579         /*
 580                 If a list doesn't exist or the source item doesn't exist
 581         */
 582         if(!list_from){
 583                 infostream<<"IDropAction::apply(): FAIL: source list not found: "
 584                                 <<"from_inv=\""<<from_inv.dump()<<"\""<<std::endl;
 585                 return;
 586         }
 587         if(list_from->getItem(from_i).empty())
 588         {
 589                 infostream<<"IDropAction::apply(): FAIL: source item not found: "
 590                                 <<"from_inv=\""<<from_inv.dump()<<"\""
 591                                 <<", from_list=\""<<from_list<<"\""
 592                                 <<" from_i="<<from_i<<std::endl;
 593                 return;
 594         }
 595
 596         /*
 597                 Do not handle rollback if inventory is player's
 598         */
 599         bool ignore_src_rollback = (from_inv.type == InventoryLocation::PLAYER);
 600
 601         /*
 602                 Collect information of endpoints
 603         */
 604
 605         int take_count = list_from->getItem(from_i).count;
 606         if(count != 0 && count < take_count)
 607                 take_count = count;
 608         int src_can_take_count = take_count;
 609
 610         // Source is detached
 611         if(from_inv.type == InventoryLocation::DETACHED)
 612         {
 613                 ItemStack src_item = list_from->getItem(from_i);
 614                 src_item.count = take_count;
 615                 src_can_take_count = PLAYER_TO_SA(player)->detached_inventory_AllowTake(
 616                                 from_inv.name, from_list, from_i, src_item, player);
 617         }
 618
 619         // Source is nodemeta
 620         if(from_inv.type == InventoryLocation::NODEMETA)
 621         {
 622                 ItemStack src_item = list_from->getItem(from_i);
 623                 src_item.count = take_count;
 624                 src_can_take_count = PLAYER_TO_SA(player)->nodemeta_inventory_AllowTake(
 625                                 from_inv.p, from_list, from_i, src_item, player);
 626         }
 627
 628         if(src_can_take_count != -1 && src_can_take_count < take_count)
 629                 take_count = src_can_take_count;
 630
 631         int actually_dropped_count = 0;
 632
 633         ItemStack src_item = list_from->getItem(from_i);
 634
 635         // Drop the item
 636         ItemStack item1 = list_from->getItem(from_i);
 637         item1.count = take_count;
 638         if(PLAYER_TO_SA(player)->item_OnDrop(item1, player,
 639                                 player->getBasePosition() + v3f(0,1,0)))
 640         {
 641                 actually_dropped_count = take_count - item1.count;
 642
 643                 if(actually_dropped_count == 0){
 644                         infostream<<"Actually dropped no items"<<std::endl;
 645                         return;
 646                 }
 647
 648                 // If source isn't infinite
 649                 if(src_can_take_count != -1){
 650                         // Take item from source list
 651                         ItemStack item2 = list_from->takeItem(from_i, actually_dropped_count);
 652
 653                         if(item2.count != actually_dropped_count)
 654                                 errorstream<<"Could not take dropped count of items"<<std::endl;
 655
 656                         mgr->setInventoryModified(from_inv, false);
 657                 }
 658         }
 659
 660         infostream<<"IDropAction::apply(): dropped "
 661                         <<" from inv=\""<<from_inv.dump()<<"\""
 662                         <<" list=\""<<from_list<<"\""
 663                         <<" i="<<from_i
 664                         <<std::endl;
 665
 666         src_item.count = actually_dropped_count;
 667
 668         /*
 669                 Report drop to endpoints
 670         */
 671
 672         // Source is detached
 673         if(from_inv.type == InventoryLocation::DETACHED)
 674         {
 675                 PLAYER_TO_SA(player)->detached_inventory_OnTake(
 676                                 from_inv.name, from_list, from_i, src_item, player);
 677         }
 678
 679         // Source is nodemeta
 680         if(from_inv.type == InventoryLocation::NODEMETA)
 681         {
 682                 PLAYER_TO_SA(player)->nodemeta_inventory_OnTake(
 683                                 from_inv.p, from_list, from_i, src_item, player);
 684         }
 685
 686         /*
 687                 Record rollback information
 688         */
 689         if(!ignore_src_rollback && gamedef->rollback())
 690         {
 691                 IRollbackManager *rollback = gamedef->rollback();
 692
 693                 // If source is not infinite, record item take
 694                 if(src_can_take_count != -1){
 695                         RollbackAction action;
 696                         std::string loc;
 697                         {
 698                                 std::ostringstream os(std::ios::binary);
 699                                 from_inv.serialize(os);
 700                                 loc = os.str();
 701                         }
 702                         action.setModifyInventoryStack(loc, from_list, from_i,
 703                                         false, src_item);
 704                         rollback->reportAction(action);
 705                 }
 706         }
 707 }
 708
 709 void IDropAction::clientApply(InventoryManager *mgr, IGameDef *gamedef)
 710 {
 711         // Optional InventoryAction operation that is run on the client
 712         // to make lag less apparent.
 713
 714         Inventory *inv_from = mgr->getInventory(from_inv);
 715         if(!inv_from)
 716                 return;
 717
 718         InventoryLocation current_player;
 719         current_player.setCurrentPlayer();
 720         Inventory *inv_player = mgr->getInventory(current_player);
 721         if(inv_from != inv_player)
 722                 return;
 723
 724         InventoryList *list_from = inv_from->getList(from_list);
 725         if(!list_from)
 726                 return;
 727
 728         if(count == 0)
 729                 list_from->changeItem(from_i, ItemStack());
 730         else
 731                 list_from->takeItem(from_i, count);
 732
 733         mgr->setInventoryModified(from_inv);
 734 }
 735
 736 /*
 737         ICraftAction
 738 */
 739
 740 ICraftAction::ICraftAction(std::istream &is)
 741 {
 742         std::string ts;
 743
 744         std::getline(is, ts, ' ');
 745         count = stoi(ts);
 746
 747         std::getline(is, ts, ' ');
 748         craft_inv.deSerialize(ts);
 749 }
 750
 751 void ICraftAction::apply(InventoryManager *mgr,
 752         ServerActiveObject *player, IGameDef *gamedef)
 753 {
 754         Inventory *inv_craft = mgr->getInventory(craft_inv);
 755
 756         if (!inv_craft) {
 757                 infostream << "ICraftAction::apply(): FAIL: inventory not found: "
 758                                 << "craft_inv=\"" << craft_inv.dump() << "\"" << std::endl;
 759                 return;
 760         }
 761
 762         InventoryList *list_craft = inv_craft->getList("craft");
 763         InventoryList *list_craftresult = inv_craft->getList("craftresult");
 764         InventoryList *list_main = inv_craft->getList("main");
 765
 766         /*
 767                 If a list doesn't exist or the source item doesn't exist
 768         */
 769         if (!list_craft) {
 770                 infostream << "ICraftAction::apply(): FAIL: craft list not found: "
 771                                 << "craft_inv=\"" << craft_inv.dump() << "\"" << std::endl;
 772                 return;
 773         }
 774         if (!list_craftresult) {
 775                 infostream << "ICraftAction::apply(): FAIL: craftresult list not found: "
 776                                 << "craft_inv=\"" << craft_inv.dump() << "\"" << std::endl;
 777                 return;
 778         }
 779         if (list_craftresult->getSize() < 1) {
 780                 infostream << "ICraftAction::apply(): FAIL: craftresult list too short: "
 781                                 << "craft_inv=\"" << craft_inv.dump() << "\"" << std::endl;
 782                 return;
 783         }
 784
 785         ItemStack crafted;
 786         ItemStack craftresultitem;
 787         int count_remaining = count;
 788         std::vector<ItemStack> output_replacements;
 789         getCraftingResult(inv_craft, crafted, output_replacements, false, gamedef);
 790         PLAYER_TO_SA(player)->item_CraftPredict(crafted, player, list_craft, craft_inv);
 791         bool found = !crafted.empty();
 792
 793         while (found && list_craftresult->itemFits(0, crafted)) {
 794                 InventoryList saved_craft_list = *list_craft;
 795
 796                 std::vector<ItemStack> temp;
 797                 // Decrement input and add crafting output
 798                 getCraftingResult(inv_craft, crafted, temp, true, gamedef);
 799                 PLAYER_TO_SA(player)->item_OnCraft(crafted, player, &saved_craft_list, craft_inv);
 800                 list_craftresult->addItem(0, crafted);
 801                 mgr->setInventoryModified(craft_inv);
 802
 803                 // Add the new replacements to the list
 804                 IItemDefManager *itemdef = gamedef->getItemDefManager();
 805                 for (std::vector<ItemStack>::iterator it = temp.begin();
 806                                 it != temp.end(); it++) {
 807                         for (std::vector<ItemStack>::iterator jt = output_replacements.begin();
 808                                         jt != output_replacements.end(); jt++) {
 809                                 if (it->name == jt->name) {
 810                                         *it = jt->addItem(*it, itemdef);
 811                                         if (it->empty())
 812                                                 continue;
 813                                 }
 814                         }
 815                         output_replacements.push_back(*it);
 816                 }
 817
 818                 actionstream << player->getDescription()
 819                                 << " crafts "
 820                                 << crafted.getItemString()
 821                                 << std::endl;
 822
 823                 // Decrement counter
 824                 if (count_remaining == 1)
 825                         break;
 826                 else if (count_remaining > 1)
 827                         count_remaining--;
 828
 829                 // Get next crafting result
 830                 found = getCraftingResult(inv_craft, crafted, temp, false, gamedef);
 831                 PLAYER_TO_SA(player)->item_CraftPredict(crafted, player, list_craft, craft_inv);
 832                 found = !crafted.empty();
 833         }
 834
 835         // Put the replacements in the inventory or drop them on the floor, if
 836         // the invenotry is full
 837         for (std::vector<ItemStack>::iterator it = output_replacements.begin();
 838                         it != output_replacements.end(); it++) {
 839                 if (list_main)
 840                         *it = list_main->addItem(*it);
 841                 if (it->empty())
 842                         continue;
 843                 u16 count = it->count;
 844                 do {
 845                         PLAYER_TO_SA(player)->item_OnDrop(*it, player,
 846                                 player->getBasePosition() + v3f(0,1,0));
 847                         if (count >= it->count) {
 848                                 errorstream << "Couldn't drop replacement stack " <<
 849                                         it->getItemString() << " because drop loop didn't "
 850                                         "decrease count." << std::endl;
 851
 852                                 break;
 853                         }
 854                 } while (!it->empty());
 855         }
 856
 857         infostream<<"ICraftAction::apply(): crafted "
 858                         <<" craft_inv=\""<<craft_inv.dump()<<"\""
 859                         <<std::endl;
 860 }
 861
 862 void ICraftAction::clientApply(InventoryManager *mgr, IGameDef *gamedef)
 863 {
 864         // Optional InventoryAction operation that is run on the client
 865         // to make lag less apparent.
 866 }
 867
 868
 869 // Crafting helper
 870 bool getCraftingResult(Inventory *inv, ItemStack& result,
 871                 std::vector<ItemStack> &output_replacements,
 872                 bool decrementInput, IGameDef *gamedef)
 873 {
 874         DSTACK(__FUNCTION_NAME);
 875
 876         result.clear();
 877
 878         // Get the InventoryList in which we will operate
 879         InventoryList *clist = inv->getList("craft");
 880         if(!clist)
 881                 return false;
 882
 883         // Mangle crafting grid to an another format
 884         CraftInput ci;
 885         ci.method = CRAFT_METHOD_NORMAL;
 886         ci.width = clist->getWidth() ? clist->getWidth() : 3;
 887         for(u16 i=0; i<clist->getSize(); i++)
 888                 ci.items.push_back(clist->getItem(i));
 889
 890         // Find out what is crafted and add it to result item slot
 891         CraftOutput co;
 892         bool found = gamedef->getCraftDefManager()->getCraftResult(
 893                         ci, co, output_replacements, decrementInput, gamedef);
 894         if(found)
 895                 result.deSerialize(co.item, gamedef->getItemDefManager());
 896
 897         if(found && decrementInput)
 898         {
 899                 // CraftInput has been changed, apply changes in clist
 900                 for(u16 i=0; i<clist->getSize(); i++)
 901                 {
 902                         clist->changeItem(i, ci.items[i]);
 903                 }
 904         }
 905
 906         return found;
 907 }
 908