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https://github.com/OpenTTD/OpenTTD
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157d028915
Build the list of railtype conversions at the same time as testing if conversion is needed. This avoids having two similar loops which need to compare the same things.
131 lines
3.3 KiB
C++
131 lines
3.3 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. Rail types stored in the map will be converted if necessary.
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*/
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static void ConvertRailTypes()
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{
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std::vector<RailType> railtype_conversion_map;
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bool needs_conversion = false;
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for (auto it = std::begin(_railtype_list); it != std::end(_railtype_list); ++it) {
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RailType rt = GetRailTypeByLabel(*it);
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if (rt == INVALID_RAILTYPE) {
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rt = RAILTYPE_RAIL;
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}
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railtype_conversion_map.push_back(rt);
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/* Conversion is needed if the rail type is in a different position than the list. */
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if (*it != 0 && rt != std::distance(std::begin(_railtype_list), it)) needs_conversion = true;
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}
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if (!needs_conversion) return;
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for (TileIndex t : Map::Iterate()) {
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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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void AfterLoadLabelMaps()
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{
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ConvertRailTypes();
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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_t 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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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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