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245 lines
9.0 KiB
C++
245 lines
9.0 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 "../vehicle_base.h"
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#include "../station_base.h"
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#include "../scope_info.h"
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#include "../3rdparty/cpp-btree/btree_map.h"
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#include "saveload.h"
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#include "../safeguards.h"
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extern btree::btree_map<uint64_t, Money> _cargo_packet_deferred_payments;
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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 first_station 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-first_station information is lost. in this case, we set the first_station
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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->first_station) ? Station::Get(cp->first_station)->xy : v->tile;
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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 first_station
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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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if (ge->data == nullptr) continue;
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const StationCargoPacketMap *packets = ge->data->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->first_station) ? Station::Get(cp->first_station)->xy : st->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 first_station 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->first_station)) cp->first_station = 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++) {
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if (st->goods[c].data != nullptr) st->goods[c].data->cargo.InvalidateCache();
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}
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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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/* Before this version, we didn't track how far cargo actually traveled in vehicles. Make best-effort estimates of this. */
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if (IsSavegameVersionBefore(SLV_CARGO_TRAVELLED) && SlXvIsFeatureMissing(XSLFI_CARGO_TRAVELLED)) {
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/* Update the cargo-traveled in stations as if they arrived from the source tile. */
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for (Station *st : Station::Iterate()) {
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for (size_t i = 0; i < NUM_CARGO; i++) {
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GoodsEntry &ge = st->goods[i];
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if (ge.data == nullptr) continue;
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auto *packets = ge.data->cargo.Packets();
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for (auto it = packets->begin(); it != packets->end(); it++) {
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for (CargoPacket *cp : it->second) {
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if (cp->source_xy != INVALID_TILE && cp->source_xy != st->xy) {
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cp->travelled.x = TileX(cp->source_xy) - TileX(st->xy);
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cp->travelled.y = TileY(cp->source_xy) - TileY(st->xy);
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}
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}
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}
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}
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}
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/* Update the cargo-traveled in vehicles as if they were loaded at the source tile. */
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for (Vehicle *v : Vehicle::Iterate()) {
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auto *packets = v->cargo.Packets();
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for (auto it = packets->begin(); it != packets->end(); it++) {
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if ((*it)->source_xy != INVALID_TILE) {
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(*it)->UpdateLoadingTile((*it)->source_xy);
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}
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}
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}
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}
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#ifdef WITH_FULL_ASSERTS
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/* CPF_IN_VEHICLE in flags is a NOSAVE; it tells if cargo is in a vehicle or not. Restore the value in here. */
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for (Vehicle *v : Vehicle::Iterate()) {
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for (auto it = v->cargo.Packets()->begin(); it != v->cargo.Packets()->end(); it++) {
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(*it)->flags |= CPF_IN_VEHICLE;
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}
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}
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#endif /* WITH_FULL_ASSERTS */
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}
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/**
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* Savegame conversion for cargopackets.
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*/
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/* static */ void CargoPacket::PostVehiclesAfterLoad()
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{
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if (SlXvIsFeaturePresent(XSLFI_CHILLPP)) {
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extern std::map<VehicleID, CargoPacketList> _veh_cpp_packets;
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for (auto &iter : _veh_cpp_packets) {
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if (iter.second.empty()) continue;
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Vehicle *v = Vehicle::Get(iter.first);
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Station *st = Station::Get(v->First()->last_station_visited);
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assert_msg(st != nullptr, "%s", scope_dumper().VehicleInfo(v));
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for (CargoPacket *cp : iter.second) {
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st->goods[v->cargo_type].CreateData().cargo.AfterLoadIncreaseReservationCount(cp->count);
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v->cargo.Append(cp, VehicleCargoList::MTA_LOAD);
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if (cp->source_xy != INVALID_TILE) {
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cp->UpdateLoadingTile(cp->source_xy);
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}
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#ifdef WITH_FULL_ASSERTS
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/* CPF_IN_VEHICLE in flags is a NOSAVE; it tells if cargo is in a vehicle or not. Restore the value in here. */
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cp->flags |= CPF_IN_VEHICLE;
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#endif /* WITH_FULL_ASSERTS */
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}
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}
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_veh_cpp_packets.clear();
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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, first_station, SLE_UINT16),
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SLE_VAR(CargoPacket, source_xy, SLE_UINT32),
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SLE_VAR(CargoPacket, next_hop, SLE_FILE_U32 | SLE_VAR_U16),
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SLE_VAR(CargoPacket, count, SLE_UINT16),
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SLE_CONDVAR_X(CargoPacket, periods_in_transit, SLE_FILE_U8 | SLE_VAR_U16, SL_MIN_VERSION, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_MORE_CARGO_AGE, 0, 0)),
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SLE_CONDVAR_X(CargoPacket, periods_in_transit, SLE_UINT16, SL_MIN_VERSION, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_MORE_CARGO_AGE)),
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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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SLE_CONDVAR_X(CargoPacket, travelled.x, SLE_INT32, SL_MIN_VERSION, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_CARGO_TRAVELLED)),
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SLE_CONDVAR_X(CargoPacket, travelled.y, SLE_INT32, SL_MIN_VERSION, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_CARGO_TRAVELLED)),
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/* Used to be paid_for, but that got changed. */
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SLE_CONDNULL(1, SL_MIN_VERSION, SLV_121),
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};
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return _cargopacket_desc;
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}
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/**
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* Save the cargo packets.
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*/
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static void Save_CAPA()
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{
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std::vector<SaveLoad> filtered_packet_desc = SlFilterObject(GetCargoPacketDesc());
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for (CargoPacket *cp : CargoPacket::Iterate()) {
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SlSetArrayIndex(cp->index);
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SlObjectSaveFiltered(cp, filtered_packet_desc);
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}
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}
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/**
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* Load the cargo packets.
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*/
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static void Load_CAPA()
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{
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std::vector<SaveLoad> filtered_packet_desc = SlFilterObject(GetCargoPacketDesc());
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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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SlObjectLoadFiltered(cp, filtered_packet_desc);
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}
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}
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/**
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* Save cargo packet deferred payments.
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*/
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void Save_CPDP()
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{
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SlSetLength(16 * _cargo_packet_deferred_payments.size());
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for (auto &it : _cargo_packet_deferred_payments) {
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SlWriteUint64(it.first);
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SlWriteUint64(it.second);
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}
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}
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/**
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* Load cargo packet deferred payments.
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*/
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void Load_CPDP()
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{
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uint count = static_cast<uint>(SlGetFieldLength() / 16);
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uint last_cargo_packet_id = std::numeric_limits<uint32_t>::max();
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for (uint i = 0; i < count; i++) {
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uint64_t k = SlReadUint64();
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uint64_t v = SlReadUint64();
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_cargo_packet_deferred_payments[k] = v;
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if (k >> 32 != last_cargo_packet_id) {
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last_cargo_packet_id = k >> 32;
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CargoPacket::Get(last_cargo_packet_id)->flags |= CargoPacket::CPF_HAS_DEFERRED_PAYMENT;
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}
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}
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}
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/** Chunk handlers related to cargo packets. */
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static const ChunkHandler cargopacket_chunk_handlers[] = {
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{ 'CAPA', Save_CAPA, Load_CAPA, nullptr, nullptr, CH_ARRAY },
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{ 'CPDP', Save_CPDP, Load_CPDP, nullptr, nullptr, CH_RIFF },
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};
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extern const ChunkHandlerTable _cargopacket_chunk_handlers(cargopacket_chunk_handlers);
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