src/saveload/storage_sl.cpp

   1 /*
   2  * This file is part of OpenTTD.
   3  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
   4  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   5  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
   6  */
   7
   8 /** @file storage_sl.cpp Code handling saving and loading of persistent storages. */
   9
  10 #include "../stdafx.h"
  11
  12 #include "saveload.h"
  13 #include "compat/storage_sl_compat.h"
  14
  15 #include "../newgrf_storage.h"
  16
  17 #include "../safeguards.h"
  18
  19 /** Description of the data to save and load in #PersistentStorage. */
  20 static const SaveLoad _storage_desc[] = {
  21          SLE_CONDVAR(PersistentStorage, grfid,    SLE_UINT32,                  SLV_6, SL_MAX_VERSION),
  22          SLE_CONDARR(PersistentStorage, storage,  SLE_UINT32,  16,           SLV_161, SLV_EXTEND_PERSISTENT_STORAGE),
  23          SLE_CONDARR(PersistentStorage, storage,  SLE_UINT32, 256,           SLV_EXTEND_PERSISTENT_STORAGE, SL_MAX_VERSION),
  24 };
  25
  26 /** Persistent storage data. */
  27 struct PSACChunkHandler : ChunkHandler {
  28         PSACChunkHandler() : ChunkHandler('PSAC', CH_TABLE) {}
  29
  30         void Load() const override
  31         {
  32                 const std::vector<SaveLoad> slt = SlCompatTableHeader(_storage_desc, _storage_sl_compat);
  33
  34                 int index;
  35
  36                 while ((index = SlIterateArray()) != -1) {
  37                         assert(PersistentStorage::CanAllocateItem());
  38                         PersistentStorage *ps = new (index) PersistentStorage(0, 0, 0);
  39                         SlObject(ps, slt);
  40                 }
  41         }
  42
  43         void Save() const override
  44         {
  45                 SlTableHeader(_storage_desc);
  46
  47                 /* Write the industries */
  48                 for (PersistentStorage *ps : PersistentStorage::Iterate()) {
  49                         ps->ClearChanges();
  50                         SlSetArrayIndex(ps->index);
  51                         SlObject(ps, _storage_desc);
  52                 }
  53         }
  54 };
  55
  56 static const PSACChunkHandler PSAC;
  57 static const ChunkHandlerRef persistent_storage_chunk_handlers[] = {
  58         PSAC,
  59 };
  60
  61 extern const ChunkHandlerTable _persistent_storage_chunk_handlers(persistent_storage_chunk_handlers);