mirror of https://github.com/OpenTTD/OpenTTD.git
126 lines
2.8 KiB
C++
126 lines
2.8 KiB
C++
/* $Id$ */
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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 "../strings_type.h"
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#include "../rail.h"
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#include "../map_func.h"
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#include "../tile_map.h"
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#include "../rail_map.h"
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#include "../road_map.h"
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#include "../station_map.h"
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#include "../tunnelbridge_map.h"
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#include "../core/alloc_func.hpp"
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#include "../core/smallvec_type.hpp"
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#include "../settings_type.h"
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#include "saveload.h"
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static SmallVector<RailTypeLabel, RAILTYPE_END> _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.Length(); 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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SmallVector<RailType, RAILTYPE_END> railtype_conversion_map;
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for (uint i = 0; i < _railtype_list.Length(); 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.Append() = r;
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}
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for (TileIndex t = 0; t < MapSize(); 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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_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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SLE_END(),
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};
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static void Save_RAIL()
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{
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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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static void Load_RAIL()
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{
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_railtype_list.Clear();
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LabelObject lo;
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int index;
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while ((index = SlIterateArray()) != -1) {
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SlObject(&lo, _label_object_desc);
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*_railtype_list.Append() = (RailTypeLabel)lo.label;
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}
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}
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extern const ChunkHandler _labelmaps_chunk_handlers[] = {
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{ 'RAIL', Save_RAIL, Load_RAIL, NULL, CH_ARRAY | CH_LAST},
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};
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