mirror of https://github.com/OpenTTD/OpenTTD.git
141 lines
3.9 KiB
C++
141 lines
3.9 KiB
C++
/*
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* This file is part of OpenTTD.
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* 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.
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* 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.
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* 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/>.
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*/
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/** @file cargomonitor_sl.cpp Code handling saving and loading of Cargo monitoring. */
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#include "../stdafx.h"
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#include "saveload.h"
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#include "compat/cargomonitor_sl_compat.h"
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#include "../cargomonitor.h"
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#include "../safeguards.h"
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/** Temporary storage of cargo monitoring data for loading or saving it. */
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struct TempStorage {
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CargoMonitorID number;
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uint32_t amount;
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};
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/** Description of the #TempStorage structure for the purpose of load and save. */
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static const SaveLoad _cargomonitor_pair_desc[] = {
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SLE_VAR(TempStorage, number, SLE_UINT32),
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SLE_VAR(TempStorage, amount, SLE_UINT32),
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};
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static CargoMonitorID FixupCargoMonitor(CargoMonitorID number)
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{
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/* Between SLV_EXTEND_CARGOTYPES and SLV_FIX_CARGO_MONITOR, the
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* CargoMonitorID structure had insufficient packing for more
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* than 32 cargo types. Here we have to shuffle bits to account
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* for the change.
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* Company moved from bits 24-31 to 25-28.
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* Cargo type increased from bits 19-23 to 19-24.
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*/
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SB(number, 25, 4, GB(number, 24, 4));
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SB(number, 29, 3, 0);
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ClrBit(number, 24);
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return number;
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}
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/** #_cargo_deliveries monitoring map. */
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struct CMDLChunkHandler : ChunkHandler {
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CMDLChunkHandler() : ChunkHandler('CMDL', CH_TABLE) {}
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void Save() const override
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{
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SlTableHeader(_cargomonitor_pair_desc);
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TempStorage storage;
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int i = 0;
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CargoMonitorMap::const_iterator iter = _cargo_deliveries.begin();
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while (iter != _cargo_deliveries.end()) {
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storage.number = iter->first;
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storage.amount = iter->second;
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SlSetArrayIndex(i);
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SlObject(&storage, _cargomonitor_pair_desc);
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i++;
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iter++;
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}
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}
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void Load() const override
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{
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const std::vector<SaveLoad> slt = SlCompatTableHeader(_cargomonitor_pair_desc, _cargomonitor_pair_sl_compat);
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TempStorage storage;
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bool fix = IsSavegameVersionBefore(SLV_FIX_CARGO_MONITOR);
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ClearCargoDeliveryMonitoring();
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for (;;) {
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if (SlIterateArray() < 0) break;
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SlObject(&storage, slt);
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if (fix) storage.number = FixupCargoMonitor(storage.number);
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_cargo_deliveries.emplace(storage.number, storage.amount);
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}
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}
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};
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/** #_cargo_pickups monitoring map. */
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struct CMPUChunkHandler : ChunkHandler {
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CMPUChunkHandler() : ChunkHandler('CMPU', CH_TABLE) {}
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void Save() const override
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{
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SlTableHeader(_cargomonitor_pair_desc);
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TempStorage storage;
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int i = 0;
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CargoMonitorMap::const_iterator iter = _cargo_pickups.begin();
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while (iter != _cargo_pickups.end()) {
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storage.number = iter->first;
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storage.amount = iter->second;
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SlSetArrayIndex(i);
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SlObject(&storage, _cargomonitor_pair_desc);
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i++;
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iter++;
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}
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}
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void Load() const override
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{
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const std::vector<SaveLoad> slt = SlCompatTableHeader(_cargomonitor_pair_desc, _cargomonitor_pair_sl_compat);
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TempStorage storage;
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bool fix = IsSavegameVersionBefore(SLV_FIX_CARGO_MONITOR);
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ClearCargoPickupMonitoring();
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for (;;) {
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if (SlIterateArray() < 0) break;
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SlObject(&storage, slt);
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if (fix) storage.number = FixupCargoMonitor(storage.number);
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_cargo_pickups.emplace(storage.number, storage.amount);
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}
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}
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};
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/** Chunk definition of the cargomonitoring maps. */
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static const CMDLChunkHandler CMDL;
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static const CMPUChunkHandler CMPU;
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static const ChunkHandlerRef cargomonitor_chunk_handlers[] = {
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CMDL,
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CMPU,
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};
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extern const ChunkHandlerTable _cargomonitor_chunk_handlers(cargomonitor_chunk_handlers);
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