135 lines
4.8 KiB
C++
135 lines
4.8 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 cargopacket_sl.cpp Code handling saving and loading of cargo packets */
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#include "../stdafx.h"
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#include "saveload.h"
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#include "compat/cargopacket_sl_compat.h"
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#include "../vehicle_base.h"
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#include "../station_base.h"
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#include "../safeguards.h"
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/**
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* Savegame conversion for cargopackets.
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*/
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/* static */ void CargoPacket::AfterLoad()
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{
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if (IsSavegameVersionBefore(SLV_44)) {
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/* If we remove a station while cargo from it is still en route, payment calculation will assume
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* 0, 0 to be the source of the cargo, resulting in very high payments usually. v->source_xy
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* stores the coordinates, preserving them even if the station is removed. However, if a game is loaded
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* where this situation exists, the cargo-source information is lost. in this case, we set the source
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* to the current tile of the vehicle to prevent excessive profits
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*/
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for (const Vehicle *v : Vehicle::Iterate()) {
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const CargoPacketList *packets = v->cargo.Packets();
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for (VehicleCargoList::ConstIterator it(packets->begin()); it != packets->end(); it++) {
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CargoPacket *cp = *it;
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cp->source_xy = Station::IsValidID(cp->source) ? Station::Get(cp->source)->xy : v->tile;
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cp->loaded_at_xy = cp->source_xy;
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}
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}
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/* Store position of the station where the goods come from, so there
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* are no very high payments when stations get removed. However, if the
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* station where the goods came from is already removed, the source
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* information is lost. In that case we set it to the position of this
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* station */
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for (Station *st : Station::Iterate()) {
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for (CargoID c = 0; c < NUM_CARGO; c++) {
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GoodsEntry *ge = &st->goods[c];
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const StationCargoPacketMap *packets = ge->cargo.Packets();
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for (StationCargoList::ConstIterator it(packets->begin()); it != packets->end(); it++) {
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CargoPacket *cp = *it;
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cp->source_xy = Station::IsValidID(cp->source) ? Station::Get(cp->source)->xy : st->xy;
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cp->loaded_at_xy = cp->source_xy;
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}
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}
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}
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}
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if (IsSavegameVersionBefore(SLV_120)) {
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/* CargoPacket's source should be either INVALID_STATION or a valid station */
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for (CargoPacket *cp : CargoPacket::Iterate()) {
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if (!Station::IsValidID(cp->source)) cp->source = INVALID_STATION;
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}
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}
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if (!IsSavegameVersionBefore(SLV_68)) {
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/* Only since version 68 we have cargo packets. Savegames from before used
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* 'new CargoPacket' + cargolist.Append so their caches are already
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* correct and do not need rebuilding. */
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for (Vehicle *v : Vehicle::Iterate()) v->cargo.InvalidateCache();
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for (Station *st : Station::Iterate()) {
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for (CargoID c = 0; c < NUM_CARGO; c++) st->goods[c].cargo.InvalidateCache();
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}
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}
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if (IsSavegameVersionBefore(SLV_181)) {
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for (Vehicle *v : Vehicle::Iterate()) v->cargo.KeepAll();
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}
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}
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/**
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* Wrapper function to get the CargoPacket's internal structure while
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* some of the variables itself are private.
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* @return the saveload description for CargoPackets.
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*/
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SaveLoadTable GetCargoPacketDesc()
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{
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static const SaveLoad _cargopacket_desc[] = {
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SLE_VAR(CargoPacket, source, SLE_UINT16),
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SLE_VAR(CargoPacket, source_xy, SLE_UINT32),
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SLE_VAR(CargoPacket, loaded_at_xy, SLE_UINT32),
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SLE_VAR(CargoPacket, count, SLE_UINT16),
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SLE_VAR(CargoPacket, days_in_transit, SLE_UINT8),
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SLE_VAR(CargoPacket, feeder_share, SLE_INT64),
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SLE_CONDVAR(CargoPacket, source_type, SLE_UINT8, SLV_125, SL_MAX_VERSION),
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SLE_CONDVAR(CargoPacket, source_id, SLE_UINT16, SLV_125, SL_MAX_VERSION),
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};
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return _cargopacket_desc;
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}
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struct CAPAChunkHandler : ChunkHandler {
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CAPAChunkHandler() : ChunkHandler('CAPA', CH_TABLE) {}
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void Save() const override
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{
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SlTableHeader(GetCargoPacketDesc());
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for (CargoPacket *cp : CargoPacket::Iterate()) {
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SlSetArrayIndex(cp->index);
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SlObject(cp, GetCargoPacketDesc());
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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(GetCargoPacketDesc(), _cargopacket_sl_compat);
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int index;
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while ((index = SlIterateArray()) != -1) {
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CargoPacket *cp = new (index) CargoPacket();
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SlObject(cp, slt);
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}
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}
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};
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static const CAPAChunkHandler CAPA;
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static const ChunkHandlerRef cargopacket_chunk_handlers[] = {
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CAPA,
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};
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extern const ChunkHandlerTable _cargopacket_chunk_handlers(cargopacket_chunk_handlers);
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