newgrf_storage.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 <https://www.gnu.org/licenses/old-licenses/gpl-2.0>.
 */
 
#include "stdafx.h"
#include "newgrf_storage.h"
#include "core/pool_func.hpp"
#include "debug.h"
 
#include "safeguards.h"
 
PersistentStoragePool _persistent_storage_pool("PersistentStorage");
INSTANTIATE_POOL_METHODS(PersistentStorage)
 
 
static std::set<BasePersistentStorageArray*> *_changed_storage_arrays = new std::set<BasePersistentStorageArray*>;
 
bool BasePersistentStorageArray::gameloop;
bool BasePersistentStorageArray::command;
bool BasePersistentStorageArray::testmode;
 
BasePersistentStorageArray::~BasePersistentStorageArray()
{
  _changed_storage_arrays->erase(this);
}
 
void AddChangedPersistentStorage(BasePersistentStorageArray *storage)
{
  _changed_storage_arrays->insert(storage);
}
 
/* static */ void BasePersistentStorageArray::SwitchMode(PersistentStorageMode mode, [[maybe_unused]] bool ignore_prev_mode)
{
  switch (mode) {
    case PSM_ENTER_GAMELOOP:
      assert(ignore_prev_mode || !gameloop);
      assert(!command && !testmode);
      gameloop = true;
      break;
 
    case PSM_LEAVE_GAMELOOP:
      assert(ignore_prev_mode || gameloop);
      assert(!command && !testmode);
      gameloop = false;
      break;
 
    case PSM_ENTER_COMMAND:
      assert((ignore_prev_mode || !command) && !testmode);
      command = true;
      break;
 
    case PSM_LEAVE_COMMAND:
      assert(ignore_prev_mode || command);
      command = false;
      break;
 
    case PSM_ENTER_TESTMODE:
      assert(!command && (ignore_prev_mode || !testmode));
      testmode = true;
      break;
 
    case PSM_LEAVE_TESTMODE:
      assert(ignore_prev_mode || testmode);
      testmode = false;
      break;
 
    default: NOT_REACHED();
  }
 
  /* Discard all temporary changes */
  for (auto &it : *_changed_storage_arrays) {
    Debug(desync, 2, "warning: discarding persistent storage changes: Feature {}, GrfID {:08X}, Tile {}", it->feature, std::byteswap(it->grfid), it->tile);
    it->ClearChanges();
  }
  _changed_storage_arrays->clear();
}