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                 // For the caused_by_move_somewhere == true case we didn't force-put the item,
 384                 // which guarantees there is no leftover, and code below would duplicate the
 385                 // (not replaced) to_stack_was item.
 386                 if (!caused_by_move_somewhere) {
 387                         // If destination stack is of different type and there are leftover
 388                         // items, attempt to put the leftover items to a different place in the
 389                         // destination inventory.
 390                         // The client-side GUI will try to guess if this happens.
 391                         if (from_stack_was.name != to_stack_was.name) {
 392                                 for (u32 i = 0; i < list_to->getSize(); i++) {
 393                                         if (list_to->getItem(i).empty()) {
 394                                                 list_to->changeItem(i, to_stack_was);
 395                                                 break;
 396                                         }
 397                                 }
 398                         }
 399                 }
 400                 if (move_count > 0) {
 401                         list_from->deleteItem(from_i);
 402                         list_from->addItem(from_i, from_stack_was);
 403                 }
 404         }
 405         // If destination is infinite, reset it's stack and take count from source
 406         if(dst_can_put_count == -1){
 407                 list_to->deleteItem(to_i);
 408                 list_to->addItem(to_i, to_stack_was);
 409                 list_from->deleteItem(from_i);
 410                 list_from->addItem(from_i, from_stack_was);
 411                 list_from->takeItem(from_i, count);
 412         }
 413
 414         infostream << "IMoveAction::apply(): moved"
 415                         << " msom=" << move_somewhere
 416                         << " caused=" << caused_by_move_somewhere
 417                         << " count=" << count
 418                         << " from inv=\"" << from_inv.dump() << "\""
 419                         << " list=\"" << from_list << "\""
 420                         << " i=" << from_i
 421                         << " to inv=\"" << to_inv.dump() << "\""
 422                         << " list=\"" << to_list << "\""
 423                         << " i=" << to_i
 424                         << std::endl;
 425
 426         // If we are inside the move somewhere loop, we don't need to report
 427         // anything if nothing happened (perhaps we don't need to report
 428         // anything for caused_by_move_somewhere == true, but this way its safer)
 429         if (caused_by_move_somewhere && move_count == 0) {
 430                 return;
 431         }
 432
 433         /*
 434                 Record rollback information
 435         */
 436         if(!ignore_rollback && gamedef->rollback())
 437         {
 438                 IRollbackManager *rollback = gamedef->rollback();
 439
 440                 // If source is not infinite, record item take
 441                 if(src_can_take_count != -1){
 442                         RollbackAction action;
 443                         std::string loc;
 444                         {
 445                                 std::ostringstream os(std::ios::binary);
 446                                 from_inv.serialize(os);
 447                                 loc = os.str();
 448                         }
 449                         action.setModifyInventoryStack(loc, from_list, from_i, false,
 450                                         src_item);
 451                         rollback->reportAction(action);
 452                 }
 453                 // If destination is not infinite, record item put
 454                 if(dst_can_put_count != -1){
 455                         RollbackAction action;
 456                         std::string loc;
 457                         {
 458                                 std::ostringstream os(std::ios::binary);
 459                                 to_inv.serialize(os);
 460                                 loc = os.str();
 461                         }
 462                         action.setModifyInventoryStack(loc, to_list, to_i, true,
 463                                         src_item);
 464                         rollback->reportAction(action);
 465                 }
 466         }
 467
 468         /*
 469                 Report move to endpoints
 470         */
 471
 472         /* Detached inventories */
 473
 474         // Both endpoints are same detached
 475         if(from_inv.type == InventoryLocation::DETACHED &&
 476                         to_inv.type == InventoryLocation::DETACHED &&
 477                         from_inv.name == to_inv.name)
 478         {
 479                 PLAYER_TO_SA(player)->detached_inventory_OnMove(
 480                                 from_inv.name, from_list, from_i,
 481                                 to_list, to_i, count, player);
 482         }
 483         else
 484         {
 485                 // Destination is detached
 486                 if(to_inv.type == InventoryLocation::DETACHED)
 487                 {
 488                         PLAYER_TO_SA(player)->detached_inventory_OnPut(
 489                                         to_inv.name, to_list, to_i, src_item, player);
 490                 }
 491                 // Source is detached
 492                 if(from_inv.type == InventoryLocation::DETACHED)
 493                 {
 494                         PLAYER_TO_SA(player)->detached_inventory_OnTake(
 495                                         from_inv.name, from_list, from_i, src_item, player);
 496                 }
 497         }
 498
 499         /* Node metadata inventories */
 500
 501         // Both endpoints are same nodemeta
 502         if(from_inv.type == InventoryLocation::NODEMETA &&
 503                         to_inv.type == InventoryLocation::NODEMETA &&
 504                         from_inv.p == to_inv.p)
 505         {
 506                 PLAYER_TO_SA(player)->nodemeta_inventory_OnMove(
 507                                 from_inv.p, from_list, from_i,
 508                                 to_list, to_i, count, player);
 509         }
 510         else{
 511                 // Destination is nodemeta
 512                 if(to_inv.type == InventoryLocation::NODEMETA)
 513                 {
 514                         PLAYER_TO_SA(player)->nodemeta_inventory_OnPut(
 515                                         to_inv.p, to_list, to_i, src_item, player);
 516                 }
 517                 // Source is nodemeta
 518                 else if(from_inv.type == InventoryLocation::NODEMETA)
 519                 {
 520                         PLAYER_TO_SA(player)->nodemeta_inventory_OnTake(
 521                                         from_inv.p, from_list, from_i, src_item, player);
 522                 }
 523         }
 524
 525         mgr->setInventoryModified(from_inv, false);
 526         if(inv_from != inv_to)
 527                 mgr->setInventoryModified(to_inv, false);
 528 }
 529
 530 void IMoveAction::clientApply(InventoryManager *mgr, IGameDef *gamedef)
 531 {
 532         // Optional InventoryAction operation that is run on the client
 533         // to make lag less apparent.
 534
 535         Inventory *inv_from = mgr->getInventory(from_inv);
 536         Inventory *inv_to = mgr->getInventory(to_inv);
 537         if(!inv_from || !inv_to)
 538                 return;
 539
 540         InventoryLocation current_player;
 541         current_player.setCurrentPlayer();
 542         Inventory *inv_player = mgr->getInventory(current_player);
 543         if(inv_from != inv_player || inv_to != inv_player)
 544                 return;
 545
 546         InventoryList *list_from = inv_from->getList(from_list);
 547         InventoryList *list_to = inv_to->getList(to_list);
 548         if(!list_from || !list_to)
 549                 return;
 550
 551         if (!move_somewhere)
 552                 list_from->moveItem(from_i, list_to, to_i, count);
 553         else
 554                 list_from->moveItemSomewhere(from_i, list_to, count);
 555
 556         mgr->setInventoryModified(from_inv);
 557         if(inv_from != inv_to)
 558                 mgr->setInventoryModified(to_inv);
 559 }
 560
 561 /*
 562         IDropAction
 563 */
 564
 565 IDropAction::IDropAction(std::istream &is)
 566 {
 567         std::string ts;
 568
 569         std::getline(is, ts, ' ');
 570         count = stoi(ts);
 571
 572         std::getline(is, ts, ' ');
 573         from_inv.deSerialize(ts);
 574
 575         std::getline(is, from_list, ' ');
 576
 577         std::getline(is, ts, ' ');
 578         from_i = stoi(ts);
 579 }
 580
 581 void IDropAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGameDef *gamedef)
 582 {
 583         Inventory *inv_from = mgr->getInventory(from_inv);
 584
 585         if(!inv_from){
 586                 infostream<<"IDropAction::apply(): FAIL: source inventory not found: "
 587                                 <<"from_inv=\""<<from_inv.dump()<<"\""<<std::endl;
 588                 return;
 589         }
 590
 591         InventoryList *list_from = inv_from->getList(from_list);
 592
 593         /*
 594                 If a list doesn't exist or the source item doesn't exist
 595         */
 596         if(!list_from){
 597                 infostream<<"IDropAction::apply(): FAIL: source list not found: "
 598                                 <<"from_inv=\""<<from_inv.dump()<<"\""<<std::endl;
 599                 return;
 600         }
 601         if(list_from->getItem(from_i).empty())
 602         {
 603                 infostream<<"IDropAction::apply(): FAIL: source item not found: "
 604                                 <<"from_inv=\""<<from_inv.dump()<<"\""
 605                                 <<", from_list=\""<<from_list<<"\""
 606                                 <<" from_i="<<from_i<<std::endl;
 607                 return;
 608         }
 609
 610         /*
 611                 Do not handle rollback if inventory is player's
 612         */
 613         bool ignore_src_rollback = (from_inv.type == InventoryLocation::PLAYER);
 614
 615         /*
 616                 Collect information of endpoints
 617         */
 618
 619         int take_count = list_from->getItem(from_i).count;
 620         if(count != 0 && count < take_count)
 621                 take_count = count;
 622         int src_can_take_count = take_count;
 623
 624         // Source is detached
 625         if(from_inv.type == InventoryLocation::DETACHED)
 626         {
 627                 ItemStack src_item = list_from->getItem(from_i);
 628                 src_item.count = take_count;
 629                 src_can_take_count = PLAYER_TO_SA(player)->detached_inventory_AllowTake(
 630                                 from_inv.name, from_list, from_i, src_item, player);
 631         }
 632
 633         // Source is nodemeta
 634         if(from_inv.type == InventoryLocation::NODEMETA)
 635         {
 636                 ItemStack src_item = list_from->getItem(from_i);
 637                 src_item.count = take_count;
 638                 src_can_take_count = PLAYER_TO_SA(player)->nodemeta_inventory_AllowTake(
 639                                 from_inv.p, from_list, from_i, src_item, player);
 640         }
 641
 642         if(src_can_take_count != -1 && src_can_take_count < take_count)
 643                 take_count = src_can_take_count;
 644
 645         int actually_dropped_count = 0;
 646
 647         ItemStack src_item = list_from->getItem(from_i);
 648
 649         // Drop the item
 650         ItemStack item1 = list_from->getItem(from_i);
 651         item1.count = take_count;
 652         if(PLAYER_TO_SA(player)->item_OnDrop(item1, player,
 653                                 player->getBasePosition() + v3f(0,1,0)))
 654         {
 655                 actually_dropped_count = take_count - item1.count;
 656
 657                 if(actually_dropped_count == 0){
 658                         infostream<<"Actually dropped no items"<<std::endl;
 659                         return;
 660                 }
 661
 662                 // If source isn't infinite
 663                 if(src_can_take_count != -1){
 664                         // Take item from source list
 665                         ItemStack item2 = list_from->takeItem(from_i, actually_dropped_count);
 666
 667                         if(item2.count != actually_dropped_count)
 668                                 errorstream<<"Could not take dropped count of items"<<std::endl;
 669
 670                         mgr->setInventoryModified(from_inv, false);
 671                 }
 672         }
 673
 674         infostream<<"IDropAction::apply(): dropped "
 675                         <<" from inv=\""<<from_inv.dump()<<"\""
 676                         <<" list=\""<<from_list<<"\""
 677                         <<" i="<<from_i
 678                         <<std::endl;
 679
 680         src_item.count = actually_dropped_count;
 681
 682         /*
 683                 Report drop to endpoints
 684         */
 685
 686         // Source is detached
 687         if(from_inv.type == InventoryLocation::DETACHED)
 688         {
 689                 PLAYER_TO_SA(player)->detached_inventory_OnTake(
 690                                 from_inv.name, from_list, from_i, src_item, player);
 691         }
 692
 693         // Source is nodemeta
 694         if(from_inv.type == InventoryLocation::NODEMETA)
 695         {
 696                 PLAYER_TO_SA(player)->nodemeta_inventory_OnTake(
 697                                 from_inv.p, from_list, from_i, src_item, player);
 698         }
 699
 700         /*
 701                 Record rollback information
 702         */
 703         if(!ignore_src_rollback && gamedef->rollback())
 704         {
 705                 IRollbackManager *rollback = gamedef->rollback();
 706
 707                 // If source is not infinite, record item take
 708                 if(src_can_take_count != -1){
 709                         RollbackAction action;
 710                         std::string loc;
 711                         {
 712                                 std::ostringstream os(std::ios::binary);
 713                                 from_inv.serialize(os);
 714                                 loc = os.str();
 715                         }
 716                         action.setModifyInventoryStack(loc, from_list, from_i,
 717                                         false, src_item);
 718                         rollback->reportAction(action);
 719                 }
 720         }
 721 }
 722
 723 void IDropAction::clientApply(InventoryManager *mgr, IGameDef *gamedef)
 724 {
 725         // Optional InventoryAction operation that is run on the client
 726         // to make lag less apparent.
 727
 728         Inventory *inv_from = mgr->getInventory(from_inv);
 729         if(!inv_from)
 730                 return;
 731
 732         InventoryLocation current_player;
 733         current_player.setCurrentPlayer();
 734         Inventory *inv_player = mgr->getInventory(current_player);
 735         if(inv_from != inv_player)
 736                 return;
 737
 738         InventoryList *list_from = inv_from->getList(from_list);
 739         if(!list_from)
 740                 return;
 741
 742         if(count == 0)
 743                 list_from->changeItem(from_i, ItemStack());
 744         else
 745                 list_from->takeItem(from_i, count);
 746
 747         mgr->setInventoryModified(from_inv);
 748 }
 749
 750 /*
 751         ICraftAction
 752 */
 753
 754 ICraftAction::ICraftAction(std::istream &is)
 755 {
 756         std::string ts;
 757
 758         std::getline(is, ts, ' ');
 759         count = stoi(ts);
 760
 761         std::getline(is, ts, ' ');
 762         craft_inv.deSerialize(ts);
 763 }
 764
 765 void ICraftAction::apply(InventoryManager *mgr,
 766         ServerActiveObject *player, IGameDef *gamedef)
 767 {
 768         Inventory *inv_craft = mgr->getInventory(craft_inv);
 769
 770         if (!inv_craft) {
 771                 infostream << "ICraftAction::apply(): FAIL: inventory not found: "
 772                                 << "craft_inv=\"" << craft_inv.dump() << "\"" << std::endl;
 773                 return;
 774         }
 775
 776         InventoryList *list_craft = inv_craft->getList("craft");
 777         InventoryList *list_craftresult = inv_craft->getList("craftresult");
 778         InventoryList *list_main = inv_craft->getList("main");
 779
 780         /*
 781                 If a list doesn't exist or the source item doesn't exist
 782         */
 783         if (!list_craft) {
 784                 infostream << "ICraftAction::apply(): FAIL: craft list not found: "
 785                                 << "craft_inv=\"" << craft_inv.dump() << "\"" << std::endl;
 786                 return;
 787         }
 788         if (!list_craftresult) {
 789                 infostream << "ICraftAction::apply(): FAIL: craftresult list not found: "
 790                                 << "craft_inv=\"" << craft_inv.dump() << "\"" << std::endl;
 791                 return;
 792         }
 793         if (list_craftresult->getSize() < 1) {
 794                 infostream << "ICraftAction::apply(): FAIL: craftresult list too short: "
 795                                 << "craft_inv=\"" << craft_inv.dump() << "\"" << std::endl;
 796                 return;
 797         }
 798
 799         ItemStack crafted;
 800         ItemStack craftresultitem;
 801         int count_remaining = count;
 802         std::vector<ItemStack> output_replacements;
 803         getCraftingResult(inv_craft, crafted, output_replacements, false, gamedef);
 804         PLAYER_TO_SA(player)->item_CraftPredict(crafted, player, list_craft, craft_inv);
 805         bool found = !crafted.empty();
 806
 807         while (found && list_craftresult->itemFits(0, crafted)) {
 808                 InventoryList saved_craft_list = *list_craft;
 809
 810                 std::vector<ItemStack> temp;
 811                 // Decrement input and add crafting output
 812                 getCraftingResult(inv_craft, crafted, temp, true, gamedef);
 813                 PLAYER_TO_SA(player)->item_OnCraft(crafted, player, &saved_craft_list, craft_inv);
 814                 list_craftresult->addItem(0, crafted);
 815                 mgr->setInventoryModified(craft_inv);
 816
 817                 // Add the new replacements to the list
 818                 IItemDefManager *itemdef = gamedef->getItemDefManager();
 819                 for (std::vector<ItemStack>::iterator it = temp.begin();
 820                                 it != temp.end(); it++) {
 821                         for (std::vector<ItemStack>::iterator jt = output_replacements.begin();
 822                                         jt != output_replacements.end(); jt++) {
 823                                 if (it->name == jt->name) {
 824                                         *it = jt->addItem(*it, itemdef);
 825                                         if (it->empty())
 826                                                 continue;
 827                                 }
 828                         }
 829                         output_replacements.push_back(*it);
 830                 }
 831
 832                 actionstream << player->getDescription()
 833                                 << " crafts "
 834                                 << crafted.getItemString()
 835                                 << std::endl;
 836
 837                 // Decrement counter
 838                 if (count_remaining == 1)
 839                         break;
 840                 else if (count_remaining > 1)
 841                         count_remaining--;
 842
 843                 // Get next crafting result
 844                 found = getCraftingResult(inv_craft, crafted, temp, false, gamedef);
 845                 PLAYER_TO_SA(player)->item_CraftPredict(crafted, player, list_craft, craft_inv);
 846                 found = !crafted.empty();
 847         }
 848
 849         // Put the replacements in the inventory or drop them on the floor, if
 850         // the invenotry is full
 851         for (std::vector<ItemStack>::iterator it = output_replacements.begin();
 852                         it != output_replacements.end(); it++) {
 853                 if (list_main)
 854                         *it = list_main->addItem(*it);
 855                 if (it->empty())
 856                         continue;
 857                 u16 count = it->count;
 858                 do {
 859                         PLAYER_TO_SA(player)->item_OnDrop(*it, player,
 860                                 player->getBasePosition() + v3f(0,1,0));
 861                         if (count >= it->count) {
 862                                 errorstream << "Couldn't drop replacement stack " <<
 863                                         it->getItemString() << " because drop loop didn't "
 864                                         "decrease count." << std::endl;
 865
 866                                 break;
 867                         }
 868                 } while (!it->empty());
 869         }
 870
 871         infostream<<"ICraftAction::apply(): crafted "
 872                         <<" craft_inv=\""<<craft_inv.dump()<<"\""
 873                         <<std::endl;
 874 }
 875
 876 void ICraftAction::clientApply(InventoryManager *mgr, IGameDef *gamedef)
 877 {
 878         // Optional InventoryAction operation that is run on the client
 879         // to make lag less apparent.
 880 }
 881
 882
 883 // Crafting helper
 884 bool getCraftingResult(Inventory *inv, ItemStack& result,
 885                 std::vector<ItemStack> &output_replacements,
 886                 bool decrementInput, IGameDef *gamedef)
 887 {
 888         DSTACK(__FUNCTION_NAME);
 889
 890         result.clear();
 891
 892         // Get the InventoryList in which we will operate
 893         InventoryList *clist = inv->getList("craft");
 894         if(!clist)
 895                 return false;
 896
 897         // Mangle crafting grid to an another format
 898         CraftInput ci;
 899         ci.method = CRAFT_METHOD_NORMAL;
 900         ci.width = clist->getWidth() ? clist->getWidth() : 3;
 901         for(u16 i=0; i<clist->getSize(); i++)
 902                 ci.items.push_back(clist->getItem(i));
 903
 904         // Find out what is crafted and add it to result item slot
 905         CraftOutput co;
 906         bool found = gamedef->getCraftDefManager()->getCraftResult(
 907                         ci, co, output_replacements, decrementInput, gamedef);
 908         if(found)
 909                 result.deSerialize(co.item, gamedef->getItemDefManager());
 910
 911         if(found && decrementInput)
 912         {
 913                 // CraftInput has been changed, apply changes in clist
 914                 for(u16 i=0; i<clist->getSize(); i++)
 915                 {
 916                         clist->changeItem(i, ci.items[i]);
 917                 }
 918         }
 919
 920         return found;
 921 }
 922