src/saveload/signs_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 signs_sl.cpp Code handling saving and loading of economy data */
   9
  10 #include "../stdafx.h"
  11
  12 #include "saveload.h"
  13 #include "compat/signs_sl_compat.h"
  14
  15 #include "../signs_base.h"
  16 #include "../fios.h"
  17
  18 #include "../safeguards.h"
  19
  20 /** Description of a sign within the savegame. */
  21 static const SaveLoad _sign_desc[] = {
  22         SLE_CONDVAR(Sign, name,  SLE_NAME,                   SL_MIN_VERSION, SLV_84),
  23         SLE_CONDSSTR(Sign, name, SLE_STR | SLF_ALLOW_CONTROL, SLV_84, SL_MAX_VERSION),
  24         SLE_CONDVAR(Sign, x,     SLE_FILE_I16 | SLE_VAR_I32, SL_MIN_VERSION, SLV_5),
  25         SLE_CONDVAR(Sign, y,     SLE_FILE_I16 | SLE_VAR_I32, SL_MIN_VERSION, SLV_5),
  26         SLE_CONDVAR(Sign, x,     SLE_INT32,                  SLV_5, SL_MAX_VERSION),
  27         SLE_CONDVAR(Sign, y,     SLE_INT32,                  SLV_5, SL_MAX_VERSION),
  28         SLE_CONDVAR(Sign, owner, SLE_UINT8,                  SLV_6, SL_MAX_VERSION),
  29         SLE_CONDVAR(Sign, z,     SLE_FILE_U8  | SLE_VAR_I32, SL_MIN_VERSION, SLV_164),
  30         SLE_CONDVAR(Sign, z,     SLE_INT32,                SLV_164, SL_MAX_VERSION),
  31 };
  32
  33 struct SIGNChunkHandler : ChunkHandler {
  34         SIGNChunkHandler() : ChunkHandler('SIGN', CH_TABLE) {}
  35
  36         void Save() const override
  37         {
  38                 SlTableHeader(_sign_desc);
  39
  40                 for (Sign *si : Sign::Iterate()) {
  41                         SlSetArrayIndex(si->index);
  42                         SlObject(si, _sign_desc);
  43                 }
  44         }
  45
  46         void Load() const override
  47         {
  48                 const std::vector<SaveLoad> slt = SlCompatTableHeader(_sign_desc, _sign_sl_compat);
  49
  50                 int index;
  51                 while ((index = SlIterateArray()) != -1) {
  52                         Sign *si = new (index) Sign();
  53                         SlObject(si, slt);
  54                         /* Before version 6.1, signs didn't have owner.
  55                          * Before version 83, invalid signs were determined by si->str == 0.
  56                          * Before version 103, owner could be a bankrupted company.
  57                          *  - we can't use IsValidCompany() now, so this is fixed in AfterLoadGame()
  58                          * All signs that were saved are valid (including those with just 'Sign' and INVALID_OWNER).
  59                          *  - so set owner to OWNER_NONE if needed (signs from pre-version 6.1 would be lost) */
  60                         if (IsSavegameVersionBefore(SLV_6, 1) || (IsSavegameVersionBefore(SLV_83) && si->owner == INVALID_OWNER)) {
  61                                 si->owner = OWNER_NONE;
  62                         }
  63
  64                         /* Signs placed in scenario editor shall now be OWNER_DEITY */
  65                         if (IsSavegameVersionBefore(SLV_171) && si->owner == OWNER_NONE && _file_to_saveload.abstract_ftype == FT_SCENARIO) {
  66                                 si->owner = OWNER_DEITY;
  67                         }
  68                 }
  69         }
  70 };
  71
  72 static const SIGNChunkHandler SIGN;
  73 static const ChunkHandlerRef sign_chunk_handlers[] = {
  74         SIGN,
  75 };
  76
  77 extern const ChunkHandlerTable _sign_chunk_handlers(sign_chunk_handlers);