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@ r15577:a61e44bed2f3
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Location: cpp/openttd-patchpack/source/src/saveload/labelmaps_sl.cpp
r15577:a61e44bed2f3
3.1 KiB
text/x-c
(svn r20247) -Fix: when it is known the loading an old savegame is going to fail, bail out immediately (using an exception) instead of going on until e.g. the expected number of byte is read
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/*
* This file is part of OpenTTD.
* 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.
* 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.
* 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/>.
*/
/** @file labelmaps_sl.cpp Code handling saving and loading of rail type label mappings */
#include "../stdafx.h"
#include "../station_map.h"
#include "../tunnelbridge_map.h"
#include "saveload.h"
static SmallVector<RailTypeLabel, RAILTYPE_END> _railtype_list;
/**
* Test if any saved rail type labels are different to the currently loaded
* rail types, which therefore requires conversion.
* @return true if (and only if) conversion due to rail type changes is needed.
*/
static bool NeedRailTypeConversion()
{
for (uint i = 0; i < _railtype_list.Length(); i++) {
if ((RailType)i < RAILTYPE_END) {
const RailtypeInfo *rti = GetRailTypeInfo((RailType)i);
if (rti->label != _railtype_list[i]) return true;
} else {
if (_railtype_list[i] != 0) return true;
}
}
/* No rail type conversion is necessary */
return false;
}
void AfterLoadLabelMaps()
{
if (NeedRailTypeConversion()) {
SmallVector<RailType, RAILTYPE_END> railtype_conversion_map;
for (uint i = 0; i < _railtype_list.Length(); i++) {
RailType r = GetRailTypeByLabel(_railtype_list[i]);
if (r == INVALID_RAILTYPE) r = RAILTYPE_BEGIN;
*railtype_conversion_map.Append() = r;
}
for (TileIndex t = 0; t < MapSize(); t++) {
switch (GetTileType(t)) {
case MP_RAILWAY:
SetRailType(t, railtype_conversion_map[GetRailType(t)]);
break;
case MP_ROAD:
if (IsLevelCrossing(t)) {
SetRailType(t, railtype_conversion_map[GetRailType(t)]);
}
break;
case MP_STATION:
if (HasStationRail(t)) {
SetRailType(t, railtype_conversion_map[GetRailType(t)]);
}
break;
case MP_TUNNELBRIDGE:
if (GetTunnelBridgeTransportType(t) == TRANSPORT_RAIL) {
SetRailType(t, railtype_conversion_map[GetRailType(t)]);
}
break;
default:
break;
}
}
}
_railtype_list.Clear();
}
/** Container for a label for SaveLoad system */
struct LabelObject {
uint32 label;
};
static const SaveLoad _label_object_desc[] = {
SLE_VAR(LabelObject, label, SLE_UINT32),
SLE_END(),
};
static void Save_RAIL()
{
LabelObject lo;
for (RailType r = RAILTYPE_BEGIN; r != RAILTYPE_END; r++) {
lo.label = GetRailTypeInfo(r)->label;
SlSetArrayIndex(r);
SlObject(&lo, _label_object_desc);
}
}
static void Load_RAIL()
{
_railtype_list.Clear();
LabelObject lo;
int index;
while ((index = SlIterateArray()) != -1) {
SlObject(&lo, _label_object_desc);
*_railtype_list.Append() = (RailTypeLabel)lo.label;
}
}
extern const ChunkHandler _labelmaps_chunk_handlers[] = {
{ 'RAIL', Save_RAIL, Load_RAIL, NULL, NULL, CH_ARRAY | CH_LAST},
};
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