mirror of https://github.com/OpenTTD/OpenTTD.git
141 lines
3.5 KiB
C++
141 lines
3.5 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 labelmaps_sl.cpp Code handling saving and loading of rail type label mappings */
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#include "../stdafx.h"
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#include "saveload.h"
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#include "compat/labelmaps_sl_compat.h"
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#include "saveload_internal.h"
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#include "../station_map.h"
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#include "../tunnelbridge_map.h"
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#include "../safeguards.h"
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static std::vector<RailTypeLabel> _railtype_list;
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/**
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* Test if any saved rail type labels are different to the currently loaded
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* rail types, which therefore requires conversion.
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* @return true if (and only if) conversion due to rail type changes is needed.
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*/
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static bool NeedRailTypeConversion()
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{
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for (uint i = 0; i < _railtype_list.size(); i++) {
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if ((RailType)i < RAILTYPE_END) {
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const RailtypeInfo *rti = GetRailTypeInfo((RailType)i);
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if (rti->label != _railtype_list[i]) return true;
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} else {
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if (_railtype_list[i] != 0) return true;
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}
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}
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/* No rail type conversion is necessary */
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return false;
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}
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void AfterLoadLabelMaps()
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{
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if (NeedRailTypeConversion()) {
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std::vector<RailType> railtype_conversion_map;
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for (uint i = 0; i < _railtype_list.size(); i++) {
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RailType r = GetRailTypeByLabel(_railtype_list[i]);
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if (r == INVALID_RAILTYPE) r = RAILTYPE_BEGIN;
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railtype_conversion_map.push_back(r);
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}
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for (TileIndex t = 0; t < Map::Size(); t++) {
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switch (GetTileType(t)) {
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case MP_RAILWAY:
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SetRailType(t, railtype_conversion_map[GetRailType(t)]);
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break;
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case MP_ROAD:
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if (IsLevelCrossing(t)) {
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SetRailType(t, railtype_conversion_map[GetRailType(t)]);
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}
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break;
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case MP_STATION:
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if (HasStationRail(t)) {
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SetRailType(t, railtype_conversion_map[GetRailType(t)]);
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}
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break;
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case MP_TUNNELBRIDGE:
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if (GetTunnelBridgeTransportType(t) == TRANSPORT_RAIL) {
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SetRailType(t, railtype_conversion_map[GetRailType(t)]);
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}
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break;
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default:
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break;
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}
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}
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}
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ResetLabelMaps();
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}
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void ResetLabelMaps()
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{
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_railtype_list.clear();
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}
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/** Container for a label for SaveLoad system */
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struct LabelObject {
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uint32 label;
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};
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static const SaveLoad _label_object_desc[] = {
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SLE_VAR(LabelObject, label, SLE_UINT32),
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};
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struct RAILChunkHandler : ChunkHandler {
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RAILChunkHandler() : ChunkHandler('RAIL', CH_TABLE) {}
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void Save() const override
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{
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SlTableHeader(_label_object_desc);
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LabelObject lo;
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for (RailType r = RAILTYPE_BEGIN; r != RAILTYPE_END; r++) {
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lo.label = GetRailTypeInfo(r)->label;
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SlSetArrayIndex(r);
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SlObject(&lo, _label_object_desc);
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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(_label_object_desc, _label_object_sl_compat);
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ResetLabelMaps();
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LabelObject lo;
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while (SlIterateArray() != -1) {
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SlObject(&lo, slt);
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_railtype_list.push_back((RailTypeLabel)lo.label);
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}
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}
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};
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static const RAILChunkHandler RAIL;
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static const ChunkHandlerRef labelmaps_chunk_handlers[] = {
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RAIL,
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};
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extern const ChunkHandlerTable _labelmaps_chunk_handlers(labelmaps_chunk_handlers);
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