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