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/* $Id$ */
/*
* 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 cargomonitor_sl.cpp Code handling saving and loading of Cargo monitoring. */
#include "../stdafx.h"
#include "../cargomonitor.h"
#include "saveload.h"
#include "../safeguards.h"
/** Temporary storage of cargo monitoring data for loading or saving it. */
struct TempStorage {
CargoMonitorID number;
uint32 amount;
};
/** Description of the #TempStorage structure for the purpose of load and save. */
static const SaveLoad _cargomonitor_pair_desc[] = {
SLE_VAR(TempStorage, number, SLE_UINT32),
SLE_VAR(TempStorage, amount, SLE_UINT32),
SLE_END()
};
static CargoMonitorID FixupCargoMonitor(CargoMonitorID number)
{
/* Between SLV_EXTEND_CARGOTYPES and SLV_FIX_CARGO_MONITOR, the
* CargoMonitorID structure had insufficient packing for more
* than 32 cargo types. Here we have to shuffle bits to account
* for the change.
* Company moved from bits 24-31 to 25-28.
* Cargo type increased from bits 19-23 to 19-24.
*/
SB(number, 25, 4, GB(number, 24, 4));
SB(number, 29, 3, 0);
ClrBit(number, 24);
return number;
}
/** Save the #_cargo_deliveries monitoring map. */
static void SaveDelivery()
{
TempStorage storage;
int i = 0;
CargoMonitorMap::const_iterator iter = _cargo_deliveries.begin();
while (iter != _cargo_deliveries.end()) {
storage.number = iter->first;
storage.amount = iter->second;
SlSetArrayIndex(i);
SlObject(&storage, _cargomonitor_pair_desc);
i++;
iter++;
}
}
/** Load the #_cargo_deliveries monitoring map. */
static void LoadDelivery()
{
TempStorage storage;
bool fix = IsSavegameVersionBefore(SLV_FIX_CARGO_MONITOR);
ClearCargoDeliveryMonitoring();
for (;;) {
if (SlIterateArray() < 0) break;
SlObject(&storage, _cargomonitor_pair_desc);
if (fix) storage.number = FixupCargoMonitor(storage.number);
std::pair<CargoMonitorID, uint32> p(storage.number, storage.amount);
_cargo_deliveries.insert(p);
}
}
/** Save the #_cargo_pickups monitoring map. */
static void SavePickup()
{
TempStorage storage;
int i = 0;
CargoMonitorMap::const_iterator iter = _cargo_pickups.begin();
while (iter != _cargo_pickups.end()) {
storage.number = iter->first;
storage.amount = iter->second;
SlSetArrayIndex(i);
SlObject(&storage, _cargomonitor_pair_desc);
i++;
iter++;
}
}
/** Load the #_cargo_pickups monitoring map. */
static void LoadPickup()
{
TempStorage storage;
bool fix = IsSavegameVersionBefore(SLV_FIX_CARGO_MONITOR);
ClearCargoPickupMonitoring();
for (;;) {
if (SlIterateArray() < 0) break;
SlObject(&storage, _cargomonitor_pair_desc);
if (fix) storage.number = FixupCargoMonitor(storage.number);
std::pair<CargoMonitorID, uint32> p(storage.number, storage.amount);
_cargo_pickups.insert(p);
}
}
/** Chunk definition of the cargomonitoring maps. */
extern const ChunkHandler _cargomonitor_chunk_handlers[] = {
{ 'CMDL', SaveDelivery, LoadDelivery, NULL, NULL, CH_ARRAY},
{ 'CMPU', SavePickup, LoadPickup, NULL, NULL, CH_ARRAY | CH_LAST},
};
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