object_sl.cpp

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/*
 * This file is part of OpenTTD.
 * 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.
 * 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.
 * 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/>.
 */
 
#include "../stdafx.h"
 
#include "saveload.h"
#include "compat/object_sl_compat.h"
 
#include "../object_base.h"
#include "../object_map.h"
#include "newgrf_sl.h"
 
#include "../safeguards.h"
 
static const SaveLoad _object_desc[] = {
      SLE_VAR(Object, location.tile,              SLE_UINT32),
      SLE_VAR(Object, location.w,                 SLE_FILE_U8 | SLE_VAR_U16),
      SLE_VAR(Object, location.h,                 SLE_FILE_U8 | SLE_VAR_U16),
      SLE_REF(Object, town,                       REF_TOWN),
      SLE_VAR(Object, build_date,                 SLE_UINT32),
  SLE_CONDVAR(Object, colour,                     SLE_UINT8,                  SLV_148, SL_MAX_VERSION),
  SLE_CONDVAR(Object, view,                       SLE_UINT8,                  SLV_155, SL_MAX_VERSION),
  SLE_CONDVAR(Object, type,                       SLE_UINT16,                 SLV_186, SL_MAX_VERSION),
};
 
struct OBJSChunkHandler : ChunkHandler {
  OBJSChunkHandler() : ChunkHandler('OBJS', CH_TABLE) {}
 
  void Save() const override
  {
    SlTableHeader(_object_desc);
 
    /* Write the objects */
    for (Object *o : Object::Iterate()) {
      SlSetArrayIndex(o->index);
      SlObject(o, _object_desc);
    }
  }
 
  void Load() const override
  {
    const std::vector<SaveLoad> slt = SlCompatTableHeader(_object_desc, _object_sl_compat);
 
    int index;
    while ((index = SlIterateArray()) != -1) {
      Object *o = new (index) Object();
      SlObject(o, slt);
    }
  }
 
  void FixPointers() const override
  {
    for (Object *o : Object::Iterate()) {
      SlObject(o, _object_desc);
      if (IsSavegameVersionBefore(SLV_148) && !IsTileType(o->location.tile, MP_OBJECT)) {
        /* Due to a small bug stale objects could remain. */
        delete o;
      }
    }
  }
};
 
struct OBIDChunkHandler : NewGRFMappingChunkHandler {
  OBIDChunkHandler() : NewGRFMappingChunkHandler('OBID', _object_mngr) {}
};
 
static const OBIDChunkHandler OBID;
static const OBJSChunkHandler OBJS;
static const ChunkHandlerRef object_chunk_handlers[] = {
  OBID,
  OBJS,
};
 
extern const ChunkHandlerTable _object_chunk_handlers(object_chunk_handlers);