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 "util/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         bool did_swap = false;
 379         move_count = list_from->moveItem(from_i,
 380                 list_to, to_i, count, !caused_by_move_somewhere, &did_swap);
 381
 382         // If source is infinite, reset it's stack
 383         if (src_can_take_count == -1) {
 384                 // For the caused_by_move_somewhere == true case we didn't force-put the item,
 385                 // which guarantees there is no leftover, and code below would duplicate the
 386                 // (not replaced) to_stack_was item.
 387                 if (!caused_by_move_somewhere) {
 388                         // If destination stack is of different type and there are leftover
 389                         // items, attempt to put the leftover items to a different place in the
 390                         // destination inventory.
 391                         // The client-side GUI will try to guess if this happens.
 392                         if (from_stack_was.name != to_stack_was.name) {
 393                                 for (u32 i = 0; i < list_to->getSize(); i++) {
 394                                         if (list_to->getItem(i).empty()) {
 395                                                 list_to->changeItem(i, to_stack_was);
 396                                                 break;
 397                                         }
 398                                 }
 399                         }
 400                 }
 401                 if (move_count > 0 || did_swap) {
 402                         list_from->deleteItem(from_i);
 403                         list_from->addItem(from_i, from_stack_was);
 404                 }
 405         }
 406         // If destination is infinite, reset it's stack and take count from source
 407         if(dst_can_put_count == -1){
 408                 list_to->deleteItem(to_i);
 409                 list_to->addItem(to_i, to_stack_was);
 410                 list_from->deleteItem(from_i);
 411                 list_from->addItem(from_i, from_stack_was);
 412                 list_from->takeItem(from_i, count);
 413         }
 414
 415         infostream << "IMoveAction::apply(): moved"
 416                         << " msom=" << move_somewhere
 417                         << " caused=" << caused_by_move_somewhere
 418                         << " count=" << count
 419                         << " from inv=\"" << from_inv.dump() << "\""
 420                         << " list=\"" << from_list << "\""
 421                         << " i=" << from_i
 422                         << " to inv=\"" << to_inv.dump() << "\""
 423                         << " list=\"" << to_list << "\""
 424                         << " i=" << to_i
 425                         << std::endl;
 426
 427         // If we are inside the move somewhere loop, we don't need to report
 428         // anything if nothing happened (perhaps we don't need to report
 429         // anything for caused_by_move_somewhere == true, but this way its safer)
 430         if (caused_by_move_somewhere && move_count == 0) {
 431                 return;
 432         }
 433
 434         /*
 435                 Record rollback information
 436         */
 437         if(!ignore_rollback && gamedef->rollback())
 438         {
 439                 IRollbackManager *rollback = gamedef->rollback();
 440
 441                 // If source is not infinite, record item take
 442                 if(src_can_take_count != -1){
 443                         RollbackAction action;
 444                         std::string loc;
 445                         {
 446                                 std::ostringstream os(std::ios::binary);
 447                                 from_inv.serialize(os);
 448                                 loc = os.str();
 449                         }
 450                         action.setModifyInventoryStack(loc, from_list, from_i, false,
 451                                         src_item);
 452                         rollback->reportAction(action);
 453                 }
 454                 // If destination is not infinite, record item put
 455                 if(dst_can_put_count != -1){
 456                         RollbackAction action;
 457                         std::string loc;
 458                         {
 459                                 std::ostringstream os(std::ios::binary);
 460                                 to_inv.serialize(os);
 461                                 loc = os.str();
 462                         }
 463                         action.setModifyInventoryStack(loc, to_list, to_i, true,
 464                                         src_item);
 465                         rollback->reportAction(action);
 466                 }
 467         }
 468
 469         /*
 470                 Report move to endpoints
 471         */
 472
 473         /* Detached inventories */
 474
 475         // Both endpoints are same detached
 476         if(from_inv.type == InventoryLocation::DETACHED &&
 477                         to_inv.type == InventoryLocation::DETACHED &&
 478                         from_inv.name == to_inv.name)
 479         {
 480                 PLAYER_TO_SA(player)->detached_inventory_OnMove(
 481                                 from_inv.name, from_list, from_i,
 482                                 to_list, to_i, count, player);
 483         }
 484         else
 485         {
 486                 // Destination is detached
 487                 if(to_inv.type == InventoryLocation::DETACHED)
 488                 {
 489                         PLAYER_TO_SA(player)->detached_inventory_OnPut(
 490                                         to_inv.name, to_list, to_i, src_item, player);
 491                 }
 492                 // Source is detached
 493                 if(from_inv.type == InventoryLocation::DETACHED)
 494                 {
 495                         PLAYER_TO_SA(player)->detached_inventory_OnTake(
 496                                         from_inv.name, from_list, from_i, src_item, player);
 497                 }
 498         }
 499
 500         /* Node metadata inventories */
 501
 502         // Both endpoints are same nodemeta
 503         if(from_inv.type == InventoryLocation::NODEMETA &&
 504                         to_inv.type == InventoryLocation::NODEMETA &&
 505                         from_inv.p == to_inv.p)
 506         {
 507                 PLAYER_TO_SA(player)->nodemeta_inventory_OnMove(
 508                                 from_inv.p, from_list, from_i,
 509                                 to_list, to_i, count, player);
 510         }
 511         else{
 512                 // Destination is nodemeta
 513                 if(to_inv.type == InventoryLocation::NODEMETA)
 514                 {
 515                         PLAYER_TO_SA(player)->nodemeta_inventory_OnPut(
 516                                         to_inv.p, to_list, to_i, src_item, player);
 517                 }
 518                 // Source is nodemeta
 519                 else if(from_inv.type == InventoryLocation::NODEMETA)
 520                 {
 521                         PLAYER_TO_SA(player)->nodemeta_inventory_OnTake(
 522                                         from_inv.p, from_list, from_i, src_item, player);
 523                 }
 524         }
 525
 526         mgr->setInventoryModified(from_inv, false);
 527         if(inv_from != inv_to)
 528                 mgr->setInventoryModified(to_inv, false);
 529 }
 530
 531 void IMoveAction::clientApply(InventoryManager *mgr, IGameDef *gamedef)
 532 {
 533         // Optional InventoryAction operation that is run on the client
 534         // to make lag less apparent.
 535
 536         Inventory *inv_from = mgr->getInventory(from_inv);
 537         Inventory *inv_to = mgr->getInventory(to_inv);
 538         if(!inv_from || !inv_to)
 539                 return;
 540
 541         InventoryLocation current_player;
 542         current_player.setCurrentPlayer();
 543         Inventory *inv_player = mgr->getInventory(current_player);
 544         if(inv_from != inv_player || inv_to != inv_player)
 545                 return;
 546
 547         InventoryList *list_from = inv_from->getList(from_list);
 548         InventoryList *list_to = inv_to->getList(to_list);
 549         if(!list_from || !list_to)
 550                 return;
 551
 552         if (!move_somewhere)
 553                 list_from->moveItem(from_i, list_to, to_i, count);
 554         else
 555                 list_from->moveItemSomewhere(from_i, list_to, count);
 556
 557         mgr->setInventoryModified(from_inv);
 558         if(inv_from != inv_to)
 559                 mgr->setInventoryModified(to_inv);
 560 }
 561
 562 /*
 563         IDropAction
 564 */
 565
 566 IDropAction::IDropAction(std::istream &is)
 567 {
 568         std::string ts;
 569
 570         std::getline(is, ts, ' ');
 571         count = stoi(ts);
 572
 573         std::getline(is, ts, ' ');
 574         from_inv.deSerialize(ts);
 575
 576         std::getline(is, from_list, ' ');
 577
 578         std::getline(is, ts, ' ');
 579         from_i = stoi(ts);
 580 }
 581
 582 void IDropAction::apply(InventoryManager *mgr, ServerActiveObject *player, IGameDef *gamedef)
 583 {
 584         Inventory *inv_from = mgr->getInventory(from_inv);
 585
 586         if(!inv_from){
 587                 infostream<<"IDropAction::apply(): FAIL: source inventory not found: "
 588                                 <<"from_inv=\""<<from_inv.dump()<<"\""<<std::endl;
 589                 return;
 590         }
 591
 592         InventoryList *list_from = inv_from->getList(from_list);
 593
 594         /*
 595                 If a list doesn't exist or the source item doesn't exist
 596         */
 597         if(!list_from){
 598                 infostream<<"IDropAction::apply(): FAIL: source list not found: "
 599                                 <<"from_inv=\""<<from_inv.dump()<<"\""<<std::endl;
 600                 return;
 601         }
 602         if(list_from->getItem(from_i).empty())
 603         {
 604                 infostream<<"IDropAction::apply(): FAIL: source item not found: "
 605                                 <<"from_inv=\""<<from_inv.dump()<<"\""
 606                                 <<", from_list=\""<<from_list<<"\""
 607                                 <<" from_i="<<from_i<<std::endl;
 608                 return;
 609         }
 610
 611         /*
 612                 Do not handle rollback if inventory is player's
 613         */
 614         bool ignore_src_rollback = (from_inv.type == InventoryLocation::PLAYER);
 615
 616         /*
 617                 Collect information of endpoints
 618         */
 619
 620         int take_count = list_from->getItem(from_i).count;
 621         if(count != 0 && count < take_count)
 622                 take_count = count;
 623         int src_can_take_count = take_count;
 624
 625         // Source is detached
 626         if(from_inv.type == InventoryLocation::DETACHED)
 627         {
 628                 ItemStack src_item = list_from->getItem(from_i);
 629                 src_item.count = take_count;
 630                 src_can_take_count = PLAYER_TO_SA(player)->detached_inventory_AllowTake(
 631                                 from_inv.name, from_list, from_i, src_item, player);
 632         }
 633
 634         // Source is nodemeta
 635         if(from_inv.type == InventoryLocation::NODEMETA)
 636         {
 637                 ItemStack src_item = list_from->getItem(from_i);
 638                 src_item.count = take_count;
 639                 src_can_take_count = PLAYER_TO_SA(player)->nodemeta_inventory_AllowTake(
 640                                 from_inv.p, from_list, from_i, src_item, player);
 641         }
 642
 643         if(src_can_take_count != -1 && src_can_take_count < take_count)
 644                 take_count = src_can_take_count;
 645
 646         int actually_dropped_count = 0;
 647
 648         ItemStack src_item = list_from->getItem(from_i);
 649
 650         // Drop the item
 651         ItemStack item1 = list_from->getItem(from_i);
 652         item1.count = take_count;
 653         if(PLAYER_TO_SA(player)->item_OnDrop(item1, player,
 654                                 player->getBasePosition() + v3f(0,1,0)))
 655         {
 656                 actually_dropped_count = take_count - item1.count;
 657
 658                 if(actually_dropped_count == 0){
 659                         infostream<<"Actually dropped no items"<<std::endl;
 660                         return;
 661                 }
 662
 663                 // If source isn't infinite
 664                 if(src_can_take_count != -1){
 665                         // Take item from source list
 666                         ItemStack item2 = list_from->takeItem(from_i, actually_dropped_count);
 667
 668                         if(item2.count != actually_dropped_count)
 669                                 errorstream<<"Could not take dropped count of items"<<std::endl;
 670
 671                         mgr->setInventoryModified(from_inv, false);
 672                 }
 673         }
 674
 675         infostream<<"IDropAction::apply(): dropped "
 676                         <<" from inv=\""<<from_inv.dump()<<"\""
 677                         <<" list=\""<<from_list<<"\""
 678                         <<" i="<<from_i
 679                         <<std::endl;
 680
 681         src_item.count = actually_dropped_count;
 682
 683         /*
 684                 Report drop to endpoints
 685         */
 686
 687         // Source is detached
 688         if(from_inv.type == InventoryLocation::DETACHED)
 689         {
 690                 PLAYER_TO_SA(player)->detached_inventory_OnTake(
 691                                 from_inv.name, from_list, from_i, src_item, player);
 692         }
 693
 694         // Source is nodemeta
 695         if(from_inv.type == InventoryLocation::NODEMETA)
 696         {
 697                 PLAYER_TO_SA(player)->nodemeta_inventory_OnTake(
 698                                 from_inv.p, from_list, from_i, src_item, player);
 699         }
 700
 701         /*
 702                 Record rollback information
 703         */
 704         if(!ignore_src_rollback && gamedef->rollback())
 705         {
 706                 IRollbackManager *rollback = gamedef->rollback();
 707
 708                 // If source is not infinite, record item take
 709                 if(src_can_take_count != -1){
 710                         RollbackAction action;
 711                         std::string loc;
 712                         {
 713                                 std::ostringstream os(std::ios::binary);
 714                                 from_inv.serialize(os);
 715                                 loc = os.str();
 716                         }
 717                         action.setModifyInventoryStack(loc, from_list, from_i,
 718                                         false, src_item);
 719                         rollback->reportAction(action);
 720                 }
 721         }
 722 }
 723
 724 void IDropAction::clientApply(InventoryManager *mgr, IGameDef *gamedef)
 725 {
 726         // Optional InventoryAction operation that is run on the client
 727         // to make lag less apparent.
 728
 729         Inventory *inv_from = mgr->getInventory(from_inv);
 730         if(!inv_from)
 731                 return;
 732
 733         InventoryLocation current_player;
 734         current_player.setCurrentPlayer();
 735         Inventory *inv_player = mgr->getInventory(current_player);
 736         if(inv_from != inv_player)
 737                 return;
 738
 739         InventoryList *list_from = inv_from->getList(from_list);
 740         if(!list_from)
 741                 return;
 742
 743         if(count == 0)
 744                 list_from->changeItem(from_i, ItemStack());
 745         else
 746                 list_from->takeItem(from_i, count);
 747
 748         mgr->setInventoryModified(from_inv);
 749 }
 750
 751 /*
 752         ICraftAction
 753 */
 754
 755 ICraftAction::ICraftAction(std::istream &is)
 756 {
 757         std::string ts;
 758
 759         std::getline(is, ts, ' ');
 760         count = stoi(ts);
 761
 762         std::getline(is, ts, ' ');
 763         craft_inv.deSerialize(ts);
 764 }
 765
 766 void ICraftAction::apply(InventoryManager *mgr,
 767         ServerActiveObject *player, IGameDef *gamedef)
 768 {
 769         Inventory *inv_craft = mgr->getInventory(craft_inv);
 770
 771         if (!inv_craft) {
 772                 infostream << "ICraftAction::apply(): FAIL: inventory not found: "
 773                                 << "craft_inv=\"" << craft_inv.dump() << "\"" << std::endl;
 774                 return;
 775         }
 776
 777         InventoryList *list_craft = inv_craft->getList("craft");
 778         InventoryList *list_craftresult = inv_craft->getList("craftresult");
 779         InventoryList *list_main = inv_craft->getList("main");
 780
 781         /*
 782                 If a list doesn't exist or the source item doesn't exist
 783         */
 784         if (!list_craft) {
 785                 infostream << "ICraftAction::apply(): FAIL: craft list not found: "
 786                                 << "craft_inv=\"" << craft_inv.dump() << "\"" << std::endl;
 787                 return;
 788         }
 789         if (!list_craftresult) {
 790                 infostream << "ICraftAction::apply(): FAIL: craftresult list not found: "
 791                                 << "craft_inv=\"" << craft_inv.dump() << "\"" << std::endl;
 792                 return;
 793         }
 794         if (list_craftresult->getSize() < 1) {
 795                 infostream << "ICraftAction::apply(): FAIL: craftresult list too short: "
 796                                 << "craft_inv=\"" << craft_inv.dump() << "\"" << std::endl;
 797                 return;
 798         }
 799
 800         ItemStack crafted;
 801         ItemStack craftresultitem;
 802         int count_remaining = count;
 803         std::vector<ItemStack> output_replacements;
 804         getCraftingResult(inv_craft, crafted, output_replacements, false, gamedef);
 805         PLAYER_TO_SA(player)->item_CraftPredict(crafted, player, list_craft, craft_inv);
 806         bool found = !crafted.empty();
 807
 808         while (found && list_craftresult->itemFits(0, crafted)) {
 809                 InventoryList saved_craft_list = *list_craft;
 810
 811                 std::vector<ItemStack> temp;
 812                 // Decrement input and add crafting output
 813                 getCraftingResult(inv_craft, crafted, temp, true, gamedef);
 814                 PLAYER_TO_SA(player)->item_OnCraft(crafted, player, &saved_craft_list, craft_inv);
 815                 list_craftresult->addItem(0, crafted);
 816                 mgr->setInventoryModified(craft_inv);
 817
 818                 // Add the new replacements to the list
 819                 IItemDefManager *itemdef = gamedef->getItemDefManager();
 820                 for (std::vector<ItemStack>::iterator it = temp.begin();
 821                                 it != temp.end(); ++it) {
 822                         for (std::vector<ItemStack>::iterator jt = output_replacements.begin();
 823                                         jt != output_replacements.end(); ++jt) {
 824                                 if (it->name == jt->name) {
 825                                         *it = jt->addItem(*it, itemdef);
 826                                         if (it->empty())
 827                                                 continue;
 828                                 }
 829                         }
 830                         output_replacements.push_back(*it);
 831                 }
 832
 833                 actionstream << player->getDescription()
 834                                 << " crafts "
 835                                 << crafted.getItemString()
 836                                 << std::endl;
 837
 838                 // Decrement counter
 839                 if (count_remaining == 1)
 840                         break;
 841                 else if (count_remaining > 1)
 842                         count_remaining--;
 843
 844                 // Get next crafting result
 845                 found = getCraftingResult(inv_craft, crafted, temp, false, gamedef);
 846                 PLAYER_TO_SA(player)->item_CraftPredict(crafted, player, list_craft, craft_inv);
 847                 found = !crafted.empty();
 848         }
 849
 850         // Put the replacements in the inventory or drop them on the floor, if
 851         // the invenotry is full
 852         for (std::vector<ItemStack>::iterator it = output_replacements.begin();
 853                         it != output_replacements.end(); ++it) {
 854                 if (list_main)
 855                         *it = list_main->addItem(*it);
 856                 if (it->empty())
 857                         continue;
 858                 u16 count = it->count;
 859                 do {
 860                         PLAYER_TO_SA(player)->item_OnDrop(*it, player,
 861                                 player->getBasePosition() + v3f(0,1,0));
 862                         if (count >= it->count) {
 863                                 errorstream << "Couldn't drop replacement stack " <<
 864                                         it->getItemString() << " because drop loop didn't "
 865                                         "decrease count." << std::endl;
 866
 867                                 break;
 868                         }
 869                 } while (!it->empty());
 870         }
 871
 872         infostream<<"ICraftAction::apply(): crafted "
 873                         <<" craft_inv=\""<<craft_inv.dump()<<"\""
 874                         <<std::endl;
 875 }
 876
 877 void ICraftAction::clientApply(InventoryManager *mgr, IGameDef *gamedef)
 878 {
 879         // Optional InventoryAction operation that is run on the client
 880         // to make lag less apparent.
 881 }
 882
 883
 884 // Crafting helper
 885 bool getCraftingResult(Inventory *inv, ItemStack& result,
 886                 std::vector<ItemStack> &output_replacements,
 887                 bool decrementInput, IGameDef *gamedef)
 888 {
 889         DSTACK(FUNCTION_NAME);
 890
 891         result.clear();
 892
 893         // Get the InventoryList in which we will operate
 894         InventoryList *clist = inv->getList("craft");
 895         if(!clist)
 896                 return false;
 897
 898         // Mangle crafting grid to an another format
 899         CraftInput ci;
 900         ci.method = CRAFT_METHOD_NORMAL;
 901         ci.width = clist->getWidth() ? clist->getWidth() : 3;
 902         for(u16 i=0; i<clist->getSize(); i++)
 903                 ci.items.push_back(clist->getItem(i));
 904
 905         // Find out what is crafted and add it to result item slot
 906         CraftOutput co;
 907         bool found = gamedef->getCraftDefManager()->getCraftResult(
 908                         ci, co, output_replacements, decrementInput, gamedef);
 909         if(found)
 910                 result.deSerialize(co.item, gamedef->getItemDefManager());
 911
 912         if(found && decrementInput)
 913         {
 914                 // CraftInput has been changed, apply changes in clist
 915                 for(u16 i=0; i<clist->getSize(); i++)
 916                 {
 917                         clist->changeItem(i, ci.items[i]);
 918                 }
 919         }
 920
 921         return found;
 922 }
 923