/* * 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/>. */ /** @file newgrf_storage.cpp Functionality related to the temporary and persistent storage arrays for NewGRFs. */ #include "stdafx.h" #include "newgrf_storage.h" #include "core/pool_func.hpp" #include "core/endian_func.hpp" #include "debug.h" #include <set> #include "safeguards.h" PersistentStoragePool _persistent_storage_pool("PersistentStorage"); INSTANTIATE_POOL_METHODS(PersistentStorage) /** The changed storage arrays */ static std::set<BasePersistentStorageArray*> *_changed_storage_arrays = new std::set<BasePersistentStorageArray*>; bool BasePersistentStorageArray::gameloop; bool BasePersistentStorageArray::command; bool BasePersistentStorageArray::testmode; /** * Remove references to use. */ BasePersistentStorageArray::~BasePersistentStorageArray() { _changed_storage_arrays->erase(this); } /** * Add the changed storage array to the list of changed arrays. * This is done so we only have to revert/save the changed * arrays, which saves quite a few clears, etc. after callbacks. * @param storage the array that has changed */ void AddChangedPersistentStorage(BasePersistentStorageArray *storage) { _changed_storage_arrays->insert(storage); } /** * Clear temporary changes made since the last call to SwitchMode, and * set whether subsequent changes shall be persistent or temporary. * * @param mode Mode switch affecting temporary/persistent changes. * @param ignore_prev_mode Disable some sanity checks for exceptional call circumstances. */ /* static */ void BasePersistentStorageArray::SwitchMode(PersistentStorageMode mode, 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 (std::set<BasePersistentStorageArray*>::iterator it = _changed_storage_arrays->begin(); it != _changed_storage_arrays->end(); it++) { DEBUG(desync, 1, "Discarding persistent storage changes: Feature %d, GrfID %08X, Tile %d", (*it)->feature, BSWAP32((*it)->grfid), (*it)->tile); (*it)->ClearChanges(); } _changed_storage_arrays->clear(); }