/
afterload.cpp
3336 lines (2908 loc) · 110 KB
/
afterload.cpp
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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 afterload.cpp Code updating data after game load */
#include "../stdafx.h"
#include "../void_map.h"
#include "../signs_base.h"
#include "../depot_base.h"
#include "../fios.h"
#include "../gamelog_internal.h"
#include "../network/network.h"
#include "../network/network_func.h"
#include "../gfxinit.h"
#include "../viewport_func.h"
#include "../viewport_kdtree.h"
#include "../industry.h"
#include "../clear_map.h"
#include "../vehicle_func.h"
#include "../string_func.h"
#include "../roadveh.h"
#include "../roadveh_cmd.h"
#include "../train.h"
#include "../station_base.h"
#include "../waypoint_base.h"
#include "../roadstop_base.h"
#include "../tunnelbridge_map.h"
#include "../pathfinder/yapf/yapf_cache.h"
#include "../elrail_func.h"
#include "../signs_func.h"
#include "../aircraft.h"
#include "../object_map.h"
#include "../object_base.h"
#include "../tree_map.h"
#include "../company_func.h"
#include "../road_cmd.h"
#include "../ai/ai.hpp"
#include "../script/script_gui.h"
#include "../game/game.hpp"
#include "../town.h"
#include "../economy_base.h"
#include "../animated_tile_func.h"
#include "../subsidy_base.h"
#include "../subsidy_func.h"
#include "../newgrf.h"
#include "../newgrf_station.h"
#include "../engine_func.h"
#include "../rail_gui.h"
#include "../core/backup_type.hpp"
#include "../smallmap_gui.h"
#include "../news_func.h"
#include "../order_backup.h"
#include "../error.h"
#include "../disaster_vehicle.h"
#include "../ship.h"
#include "../water.h"
#include "../timer/timer.h"
#include "../timer/timer_game_calendar.h"
#include "../timer/timer_game_tick.h"
#include "saveload_internal.h"
#include <signal.h>
#include "../safeguards.h"
extern Company *DoStartupNewCompany(bool is_ai, CompanyID company = INVALID_COMPANY);
/**
* Makes a tile canal or water depending on the surroundings.
*
* Must only be used for converting old savegames. Use WaterClass now.
*
* This as for example docks and shipdepots do not store
* whether the tile used to be canal or 'normal' water.
* @param t the tile to change.
* @param include_invalid_water_class Also consider WATER_CLASS_INVALID, i.e. industry tiles on land
*/
void SetWaterClassDependingOnSurroundings(Tile t, bool include_invalid_water_class)
{
/* If the slope is not flat, we always assume 'land' (if allowed). Also for one-corner-raised-shores.
* Note: Wrt. autosloping under industry tiles this is the most fool-proof behaviour. */
if (!IsTileFlat(t)) {
if (include_invalid_water_class) {
SetWaterClass(t, WATER_CLASS_INVALID);
return;
} else {
SlErrorCorrupt("Invalid water class for dry tile");
}
}
/* Mark tile dirty in all cases */
MarkTileDirtyByTile(t);
if (TileX(t) == 0 || TileY(t) == 0 || TileX(t) == Map::MaxX() - 1 || TileY(t) == Map::MaxY() - 1) {
/* tiles at map borders are always WATER_CLASS_SEA */
SetWaterClass(t, WATER_CLASS_SEA);
return;
}
bool has_water = false;
bool has_canal = false;
bool has_river = false;
for (DiagDirection dir = DIAGDIR_BEGIN; dir < DIAGDIR_END; dir++) {
Tile neighbour = TileAddByDiagDir(t, dir);
switch (GetTileType(neighbour)) {
case MP_WATER:
/* clear water and shipdepots have already a WaterClass associated */
if (IsCoast(neighbour)) {
has_water = true;
} else if (!IsLock(neighbour)) {
switch (GetWaterClass(neighbour)) {
case WATER_CLASS_SEA: has_water = true; break;
case WATER_CLASS_CANAL: has_canal = true; break;
case WATER_CLASS_RIVER: has_river = true; break;
default: SlErrorCorrupt("Invalid water class for tile");
}
}
break;
case MP_RAILWAY:
/* Shore or flooded halftile */
has_water |= (GetRailGroundType(neighbour) == RAIL_GROUND_WATER);
break;
case MP_TREES:
/* trees on shore */
has_water |= (GB(neighbour.m2(), 4, 2) == TREE_GROUND_SHORE);
break;
default: break;
}
}
if (!has_water && !has_canal && !has_river && include_invalid_water_class) {
SetWaterClass(t, WATER_CLASS_INVALID);
return;
}
if (has_river && !has_canal) {
SetWaterClass(t, WATER_CLASS_RIVER);
} else if (has_canal || !has_water) {
SetWaterClass(t, WATER_CLASS_CANAL);
} else {
SetWaterClass(t, WATER_CLASS_SEA);
}
}
static void ConvertTownOwner()
{
for (auto tile : Map::Iterate()) {
switch (GetTileType(tile)) {
case MP_ROAD:
if (GB(tile.m5(), 4, 2) == ROAD_TILE_CROSSING && HasBit(tile.m3(), 7)) {
tile.m3() = OWNER_TOWN;
}
FALLTHROUGH;
case MP_TUNNELBRIDGE:
if (tile.m1() & 0x80) SetTileOwner(tile, OWNER_TOWN);
break;
default: break;
}
}
}
/* since savegame version 4.1, exclusive transport rights are stored at towns */
static void UpdateExclusiveRights()
{
for (Town *t : Town::Iterate()) {
t->exclusivity = INVALID_COMPANY;
}
/* FIXME old exclusive rights status is not being imported (stored in s->blocked_months_obsolete)
* could be implemented this way:
* 1.) Go through all stations
* Build an array town_blocked[ town_id ][ company_id ]
* that stores if at least one station in that town is blocked for a company
* 2.) Go through that array, if you find a town that is not blocked for
* one company, but for all others, then give it exclusivity.
*/
}
static const byte convert_currency[] = {
0, 1, 12, 8, 3,
10, 14, 19, 4, 5,
9, 11, 13, 6, 17,
16, 22, 21, 7, 15,
18, 2, 20,
};
/* since savegame version 4.2 the currencies are arranged differently */
static void UpdateCurrencies()
{
_settings_game.locale.currency = convert_currency[_settings_game.locale.currency];
}
/* Up to revision 1413 the invisible tiles at the southern border have not been
* MP_VOID, even though they should have. This is fixed by this function
*/
static void UpdateVoidTiles()
{
for (uint x = 0; x < Map::SizeX(); x++) MakeVoid(TileXY(x, Map::MaxY()));
for (uint y = 0; y < Map::SizeY(); y++) MakeVoid(TileXY(Map::MaxX(), y));
}
static inline RailType UpdateRailType(RailType rt, RailType min)
{
return rt >= min ? (RailType)(rt + 1): rt;
}
/**
* Update the viewport coordinates of all signs.
*/
void UpdateAllVirtCoords()
{
UpdateAllStationVirtCoords();
UpdateAllSignVirtCoords();
UpdateAllTownVirtCoords();
UpdateAllTextEffectVirtCoords();
RebuildViewportKdtree();
}
void ClearAllCachedNames()
{
ClearAllStationCachedNames();
ClearAllTownCachedNames();
ClearAllIndustryCachedNames();
}
/**
* Initialization of the windows and several kinds of caches.
* This is not done directly in AfterLoadGame because these
* functions require that all saveload conversions have been
* done. As people tend to add savegame conversion stuff after
* the initialization of the windows and caches quite some bugs
* had been made.
* Moving this out of there is both cleaner and less bug-prone.
*/
static void InitializeWindowsAndCaches()
{
/* Initialize windows */
ResetWindowSystem();
SetupColoursAndInitialWindow();
/* Update coordinates of the signs. */
ClearAllCachedNames();
UpdateAllVirtCoords();
ResetViewportAfterLoadGame();
ScriptObject::InitializeRandomizers();
for (Company *c : Company::Iterate()) {
/* For each company, verify (while loading a scenario) that the inauguration date is the current year and set it
* accordingly if it is not the case. No need to set it on companies that are not been used already,
* thus the MIN_YEAR (which is really nothing more than Zero, initialized value) test */
if (_file_to_saveload.abstract_ftype == FT_SCENARIO && c->inaugurated_year != CalendarTime::MIN_YEAR) {
c->inaugurated_year = TimerGameCalendar::year;
}
}
/* Count number of objects per type */
for (Object *o : Object::Iterate()) {
Object::IncTypeCount(o->type);
}
/* Identify owners of persistent storage arrays */
for (Industry *i : Industry::Iterate()) {
if (i->psa != nullptr) {
i->psa->feature = GSF_INDUSTRIES;
i->psa->tile = i->location.tile;
}
}
for (Station *s : Station::Iterate()) {
if (s->airport.psa != nullptr) {
s->airport.psa->feature = GSF_AIRPORTS;
s->airport.psa->tile = s->airport.tile;
}
}
for (Town *t : Town::Iterate()) {
for (auto &it : t->psa_list) {
it->feature = GSF_FAKE_TOWNS;
it->tile = t->xy;
}
}
for (RoadVehicle *rv : RoadVehicle::Iterate()) {
if (rv->IsFrontEngine()) {
rv->CargoChanged();
}
}
RecomputePrices();
GroupStatistics::UpdateAfterLoad();
RebuildSubsidisedSourceAndDestinationCache();
/* Towns have a noise controlled number of airports system
* So each airport's noise value must be added to the town->noise_reached value
* Reset each town's noise_reached value to '0' before. */
UpdateAirportsNoise();
CheckTrainsLengths();
ShowNewGRFError();
/* Rebuild the smallmap list of owners. */
BuildOwnerLegend();
}
typedef void (CDECL *SignalHandlerPointer)(int);
static SignalHandlerPointer _prev_segfault = nullptr;
static SignalHandlerPointer _prev_abort = nullptr;
static SignalHandlerPointer _prev_fpe = nullptr;
static void CDECL HandleSavegameLoadCrash(int signum);
/**
* Replaces signal handlers of SIGSEGV and SIGABRT
* and stores pointers to original handlers in memory.
*/
static void SetSignalHandlers()
{
_prev_segfault = signal(SIGSEGV, HandleSavegameLoadCrash);
_prev_abort = signal(SIGABRT, HandleSavegameLoadCrash);
_prev_fpe = signal(SIGFPE, HandleSavegameLoadCrash);
}
/**
* Resets signal handlers back to original handlers.
*/
static void ResetSignalHandlers()
{
signal(SIGSEGV, _prev_segfault);
signal(SIGABRT, _prev_abort);
signal(SIGFPE, _prev_fpe);
}
/** Was the saveload crash because of missing NewGRFs? */
static bool _saveload_crash_with_missing_newgrfs = false;
/**
* Did loading the savegame cause a crash? If so,
* were NewGRFs missing?
* @return when the saveload crashed due to missing NewGRFs.
*/
bool SaveloadCrashWithMissingNewGRFs()
{
return _saveload_crash_with_missing_newgrfs;
}
/**
* Signal handler used to give a user a more useful report for crashes during
* the savegame loading process; especially when there's problems with the
* NewGRFs that are required by the savegame.
* @param signum received signal
*/
static void CDECL HandleSavegameLoadCrash(int signum)
{
ResetSignalHandlers();
std::string message;
message.reserve(1024);
message += "Loading your savegame caused OpenTTD to crash.\n";
for (const GRFConfig *c = _grfconfig; !_saveload_crash_with_missing_newgrfs && c != nullptr; c = c->next) {
_saveload_crash_with_missing_newgrfs = HasBit(c->flags, GCF_COMPATIBLE) || c->status == GCS_NOT_FOUND;
}
if (_saveload_crash_with_missing_newgrfs) {
message +=
"This is most likely caused by a missing NewGRF or a NewGRF that\n"
"has been loaded as replacement for a missing NewGRF. OpenTTD\n"
"cannot easily determine whether a replacement NewGRF is of a newer\n"
"or older version.\n"
"It will load a NewGRF with the same GRF ID as the missing NewGRF.\n"
"This means that if the author makes incompatible NewGRFs with the\n"
"same GRF ID, OpenTTD cannot magically do the right thing. In most\n"
"cases, OpenTTD will load the savegame and not crash, but this is an\n"
"exception.\n"
"Please load the savegame with the appropriate NewGRFs installed.\n"
"The missing/compatible NewGRFs are:\n";
for (const GRFConfig *c = _grfconfig; c != nullptr; c = c->next) {
if (HasBit(c->flags, GCF_COMPATIBLE)) {
const GRFIdentifier *replaced = _gamelog.GetOverriddenIdentifier(c);
fmt::format_to(std::back_inserter(message), "NewGRF {:08X} (checksum {}) not found.\n Loaded NewGRF \"{}\" (checksum {}) with same GRF ID instead.\n",
BSWAP32(c->ident.grfid), FormatArrayAsHex(c->original_md5sum), c->filename, FormatArrayAsHex(replaced->md5sum));
}
if (c->status == GCS_NOT_FOUND) {
fmt::format_to(std::back_inserter(message), "NewGRF {:08X} ({}) not found; checksum {}.\n",
BSWAP32(c->ident.grfid), c->filename, FormatArrayAsHex(c->ident.md5sum));
}
}
} else {
message +=
"This is probably caused by a corruption in the savegame.\n"
"Please file a bug report and attach this savegame.\n";
}
ShowInfoI(message);
SignalHandlerPointer call = nullptr;
switch (signum) {
case SIGSEGV: call = _prev_segfault; break;
case SIGABRT: call = _prev_abort; break;
case SIGFPE: call = _prev_fpe; break;
default: NOT_REACHED();
}
if (call != nullptr) call(signum);
}
/**
* Tries to change owner of this rail tile to a valid owner. In very old versions it could happen that
* a rail track had an invalid owner. When conversion isn't possible, track is removed.
* @param t tile to update
*/
static void FixOwnerOfRailTrack(Tile t)
{
assert(!Company::IsValidID(GetTileOwner(t)) && (IsLevelCrossingTile(t) || IsPlainRailTile(t)));
/* remove leftover rail piece from crossing (from very old savegames) */
Train *v = nullptr;
for (Train *w : Train::Iterate()) {
if (w->tile == TileIndex(t)) {
v = w;
break;
}
}
if (v != nullptr) {
/* when there is a train on crossing (it could happen in TTD), set owner of crossing to train owner */
SetTileOwner(t, v->owner);
return;
}
/* try to find any connected rail */
for (DiagDirection dd = DIAGDIR_BEGIN; dd < DIAGDIR_END; dd++) {
TileIndex tt = t + TileOffsByDiagDir(dd);
if (GetTileTrackStatus(t, TRANSPORT_RAIL, 0, dd) != 0 &&
GetTileTrackStatus(tt, TRANSPORT_RAIL, 0, ReverseDiagDir(dd)) != 0 &&
Company::IsValidID(GetTileOwner(tt))) {
SetTileOwner(t, GetTileOwner(tt));
return;
}
}
if (IsLevelCrossingTile(t)) {
/* else change the crossing to normal road (road vehicles won't care) */
Owner road = GetRoadOwner(t, RTT_ROAD);
Owner tram = GetRoadOwner(t, RTT_TRAM);
RoadBits bits = GetCrossingRoadBits(t);
bool hasroad = HasBit(t.m7(), 6);
bool hastram = HasBit(t.m7(), 7);
/* MakeRoadNormal */
SetTileType(t, MP_ROAD);
SetTileOwner(t, road);
t.m3() = (hasroad ? bits : 0);
t.m5() = (hastram ? bits : 0) | ROAD_TILE_NORMAL << 6;
SB(t.m6(), 2, 4, 0);
SetRoadOwner(t, RTT_TRAM, tram);
return;
}
/* if it's not a crossing, make it clean land */
MakeClear(t, CLEAR_GRASS, 0);
}
/**
* Fixes inclination of a vehicle. Older OpenTTD versions didn't update the bits correctly.
* @param v vehicle
* @param dir vehicle's direction, or # INVALID_DIR if it can be ignored
* @return inclination bits to set
*/
static uint FixVehicleInclination(Vehicle *v, Direction dir)
{
/* Compute place where this vehicle entered the tile */
int entry_x = v->x_pos;
int entry_y = v->y_pos;
switch (dir) {
case DIR_NE: entry_x |= TILE_UNIT_MASK; break;
case DIR_NW: entry_y |= TILE_UNIT_MASK; break;
case DIR_SW: entry_x &= ~TILE_UNIT_MASK; break;
case DIR_SE: entry_y &= ~TILE_UNIT_MASK; break;
case INVALID_DIR: break;
default: NOT_REACHED();
}
byte entry_z = GetSlopePixelZ(entry_x, entry_y, true);
/* Compute middle of the tile. */
int middle_x = (v->x_pos & ~TILE_UNIT_MASK) + TILE_SIZE / 2;
int middle_y = (v->y_pos & ~TILE_UNIT_MASK) + TILE_SIZE / 2;
byte middle_z = GetSlopePixelZ(middle_x, middle_y, true);
/* middle_z == entry_z, no height change. */
if (middle_z == entry_z) return 0;
/* middle_z < entry_z, we are going downwards. */
if (middle_z < entry_z) return 1U << GVF_GOINGDOWN_BIT;
/* middle_z > entry_z, we are going upwards. */
return 1U << GVF_GOINGUP_BIT;
}
/**
* Check whether the ground vehicles are at the correct Z-coordinate. When they
* are not, this will cause all kinds of problems later on as the vehicle might
* not get onto bridges and so on.
*/
static void CheckGroundVehiclesAtCorrectZ()
{
for (Vehicle *v : Vehicle::Iterate()) {
if (v->IsGroundVehicle()) {
/*
* Either the vehicle is not actually on the given tile, i.e. it is
* in the wormhole of a bridge or a tunnel, or the Z-coordinate must
* be the same as when it would be recalculated right now.
*/
assert(v->tile != TileVirtXY(v->x_pos, v->y_pos) || v->z_pos == GetSlopePixelZ(v->x_pos, v->y_pos, true));
}
}
}
/**
* Checks for the possibility that a bridge may be on this tile
* These are in fact all the tile types on which a bridge can be found
* @param t The tile to analyze
* @return True if a bridge might have been present prior to savegame 194.
*/
static inline bool MayHaveBridgeAbove(Tile t)
{
return IsTileType(t, MP_CLEAR) || IsTileType(t, MP_RAILWAY) || IsTileType(t, MP_ROAD) ||
IsTileType(t, MP_WATER) || IsTileType(t, MP_TUNNELBRIDGE) || IsTileType(t, MP_OBJECT);
}
/**
* Start the scripts.
*/
static void StartScripts()
{
/* Script debug window requires AIs to be started before trying to start GameScript. */
/* Start the AIs. */
for (const Company *c : Company::Iterate()) {
if (Company::IsValidAiID(c->index)) AI::StartNew(c->index, false);
}
/* Start the GameScript. */
Game::StartNew();
ShowScriptDebugWindowIfScriptError();
}
/**
* Perform a (large) amount of savegame conversion *magic* in order to
* load older savegames and to fill the caches for various purposes.
* @return True iff conversion went without a problem.
*/
bool AfterLoadGame()
{
SetSignalHandlers();
extern TileIndex _cur_tileloop_tile; // From landscape.cpp.
/* The LFSR used in RunTileLoop iteration cannot have a zeroed state, make it non-zeroed. */
if (_cur_tileloop_tile == 0) _cur_tileloop_tile = 1;
if (IsSavegameVersionBefore(SLV_98)) _gamelog.Oldver();
_gamelog.TestRevision();
_gamelog.TestMode();
RebuildTownKdtree();
RebuildStationKdtree();
/* This needs to be done even before conversion, because some conversions will destroy objects
* that otherwise won't exist in the tree. */
RebuildViewportKdtree();
if (IsSavegameVersionBefore(SLV_98)) _gamelog.GRFAddList(_grfconfig);
if (IsSavegameVersionBefore(SLV_119)) {
_pause_mode = (_pause_mode == 2) ? PM_PAUSED_NORMAL : PM_UNPAUSED;
} else if (_network_dedicated && (_pause_mode & PM_PAUSED_ERROR) != 0) {
Debug(net, 0, "The loading savegame was paused due to an error state");
Debug(net, 0, " This savegame cannot be used for multiplayer");
/* Restore the signals */
ResetSignalHandlers();
return false;
} else if (!_networking || _network_server) {
/* If we are in singleplayer mode, i.e. not networking, and loading the
* savegame or we are loading the savegame as network server we do
* not want to be bothered by being paused because of the automatic
* reason of a network server, e.g. joining clients or too few
* active clients. Note that resetting these values for a network
* client are very bad because then the client is going to execute
* the game loop when the server is not, i.e. it desyncs. */
_pause_mode &= ~PMB_PAUSED_NETWORK;
}
/* In very old versions, size of train stations was stored differently.
* They had swapped width and height if station was built along the Y axis.
* TTO and TTD used 3 bits for width/height, while OpenTTD used 4.
* Because the data stored by TTDPatch are unusable for rail stations > 7x7,
* recompute the width and height. Doing this unconditionally for all old
* savegames simplifies the code. */
if (IsSavegameVersionBefore(SLV_2)) {
for (Station *st : Station::Iterate()) {
st->train_station.w = st->train_station.h = 0;
}
for (auto t : Map::Iterate()) {
if (!IsTileType(t, MP_STATION)) continue;
if (t.m5() > 7) continue; // is it a rail station tile?
Station *st = Station::Get(t.m2());
assert(st->train_station.tile != 0);
int dx = TileX(t) - TileX(st->train_station.tile);
int dy = TileY(t) - TileY(st->train_station.tile);
assert(dx >= 0 && dy >= 0);
st->train_station.w = std::max<uint>(st->train_station.w, dx + 1);
st->train_station.h = std::max<uint>(st->train_station.h, dy + 1);
}
}
if (IsSavegameVersionBefore(SLV_194)) {
_settings_game.construction.map_height_limit = 15;
/* In old savegame versions, the heightlevel was coded in bits 0..3 of the type field */
for (auto t : Map::Iterate()) {
t.height() = GB(t.type(), 0, 4);
SB(t.type(), 0, 2, GB(t.m6(), 0, 2));
SB(t.m6(), 0, 2, 0);
if (MayHaveBridgeAbove(t)) {
SB(t.type(), 2, 2, GB(t.m6(), 6, 2));
SB(t.m6(), 6, 2, 0);
} else {
SB(t.type(), 2, 2, 0);
}
}
}
/* in version 2.1 of the savegame, town owner was unified. */
if (IsSavegameVersionBefore(SLV_2, 1)) ConvertTownOwner();
/* from version 4.1 of the savegame, exclusive rights are stored at towns */
if (IsSavegameVersionBefore(SLV_4, 1)) UpdateExclusiveRights();
/* from version 4.2 of the savegame, currencies are in a different order */
if (IsSavegameVersionBefore(SLV_4, 2)) UpdateCurrencies();
/* In old version there seems to be a problem that water is owned by
* OWNER_NONE, not OWNER_WATER.. I can't replicate it for the current
* (4.3) version, so I just check when versions are older, and then
* walk through the whole map.. */
if (IsSavegameVersionBefore(SLV_4, 3)) {
for (auto t : Map::Iterate()) {
if (IsTileType(t, MP_WATER) && GetTileOwner(t) >= MAX_COMPANIES) {
SetTileOwner(t, OWNER_WATER);
}
}
}
if (IsSavegameVersionBefore(SLV_84)) {
for (Company *c : Company::Iterate()) {
c->name = CopyFromOldName(c->name_1);
if (!c->name.empty()) c->name_1 = STR_SV_UNNAMED;
c->president_name = CopyFromOldName(c->president_name_1);
if (!c->president_name.empty()) c->president_name_1 = SPECSTR_PRESIDENT_NAME;
}
for (Station *st : Station::Iterate()) {
st->name = CopyFromOldName(st->string_id);
/* generating new name would be too much work for little effect, use the station name fallback */
if (!st->name.empty()) st->string_id = STR_SV_STNAME_FALLBACK;
}
for (Town *t : Town::Iterate()) {
t->name = CopyFromOldName(t->townnametype);
if (!t->name.empty()) t->townnametype = SPECSTR_TOWNNAME_START + _settings_game.game_creation.town_name;
}
}
/* From this point the old names array is cleared. */
ResetOldNames();
if (IsSavegameVersionBefore(SLV_106)) {
/* no station is determined by 'tile == INVALID_TILE' now (instead of '0') */
for (Station *st : Station::Iterate()) {
if (st->airport.tile == 0) st->airport.tile = INVALID_TILE;
if (st->train_station.tile == 0) st->train_station.tile = INVALID_TILE;
}
/* the same applies to Company::location_of_HQ */
for (Company *c : Company::Iterate()) {
if (c->location_of_HQ == 0 || (IsSavegameVersionBefore(SLV_4) && c->location_of_HQ == 0xFFFF)) {
c->location_of_HQ = INVALID_TILE;
}
}
}
/* convert road side to my format. */
if (_settings_game.vehicle.road_side) _settings_game.vehicle.road_side = 1;
/* Check if all NewGRFs are present, we are very strict in MP mode */
GRFListCompatibility gcf_res = IsGoodGRFConfigList(_grfconfig);
for (GRFConfig *c = _grfconfig; c != nullptr; c = c->next) {
if (c->status == GCS_NOT_FOUND) {
_gamelog.GRFRemove(c->ident.grfid);
} else if (HasBit(c->flags, GCF_COMPATIBLE)) {
_gamelog.GRFCompatible(&c->ident);
}
}
if (_networking && gcf_res != GLC_ALL_GOOD) {
SetSaveLoadError(STR_NETWORK_ERROR_CLIENT_NEWGRF_MISMATCH);
/* Restore the signals */
ResetSignalHandlers();
return false;
}
switch (gcf_res) {
case GLC_COMPATIBLE: ShowErrorMessage(STR_NEWGRF_COMPATIBLE_LOAD_WARNING, INVALID_STRING_ID, WL_CRITICAL); break;
case GLC_NOT_FOUND: ShowErrorMessage(STR_NEWGRF_DISABLED_WARNING, INVALID_STRING_ID, WL_CRITICAL); _pause_mode = PM_PAUSED_ERROR; break;
default: break;
}
/* The value of TimerGameCalendar::date_fract got divided, so make sure that old games are converted correctly. */
if (IsSavegameVersionBefore(SLV_11, 1) || (IsSavegameVersionBefore(SLV_147) && TimerGameCalendar::date_fract > Ticks::DAY_TICKS)) TimerGameCalendar::date_fract /= 885;
/* Update current year
* must be done before loading sprites as some newgrfs check it */
TimerGameCalendar::SetDate(TimerGameCalendar::date, TimerGameCalendar::date_fract);
/*
* Force the old behaviour for compatibility reasons with old savegames. As new
* settings can only be loaded from new savegames loading old savegames with new
* versions of OpenTTD will normally initialize settings newer than the savegame
* version with "new game" defaults which the player can define to their liking.
* For some settings we override that to keep the behaviour the same as when the
* game was saved.
*
* Note that there is no non-stop in here. This is because the setting could have
* either value in TTDPatch. To convert it properly the user has to make sure the
* right value has been chosen in the settings. Otherwise we will be converting
* it incorrectly in half of the times without a means to correct that.
*/
if (IsSavegameVersionBefore(SLV_4, 2)) _settings_game.station.modified_catchment = false;
if (IsSavegameVersionBefore(SLV_6, 1)) _settings_game.pf.forbid_90_deg = false;
if (IsSavegameVersionBefore(SLV_21)) _settings_game.vehicle.train_acceleration_model = 0;
if (IsSavegameVersionBefore(SLV_90)) _settings_game.vehicle.plane_speed = 4;
if (IsSavegameVersionBefore(SLV_95)) _settings_game.vehicle.dynamic_engines = false;
if (IsSavegameVersionBefore(SLV_96)) _settings_game.economy.station_noise_level = false;
if (IsSavegameVersionBefore(SLV_133)) {
_settings_game.vehicle.train_slope_steepness = 3;
}
if (IsSavegameVersionBefore(SLV_134)) _settings_game.economy.feeder_payment_share = 75;
if (IsSavegameVersionBefore(SLV_138)) _settings_game.vehicle.plane_crashes = 2;
if (IsSavegameVersionBefore(SLV_139)) {
_settings_game.vehicle.roadveh_acceleration_model = 0;
_settings_game.vehicle.roadveh_slope_steepness = 7;
}
if (IsSavegameVersionBefore(SLV_143)) _settings_game.economy.allow_town_level_crossings = true;
if (IsSavegameVersionBefore(SLV_159)) {
_settings_game.vehicle.max_train_length = 50;
_settings_game.construction.max_bridge_length = 64;
_settings_game.construction.max_tunnel_length = 64;
}
if (IsSavegameVersionBefore(SLV_166)) _settings_game.economy.infrastructure_maintenance = false;
if (IsSavegameVersionBefore(SLV_183)) {
_settings_game.linkgraph.distribution_pax = DT_MANUAL;
_settings_game.linkgraph.distribution_mail = DT_MANUAL;
_settings_game.linkgraph.distribution_armoured = DT_MANUAL;
_settings_game.linkgraph.distribution_default = DT_MANUAL;
}
if (IsSavegameVersionBefore(SLV_ENDING_YEAR)) {
_settings_game.game_creation.ending_year = CalendarTime::DEF_END_YEAR;
}
/* Convert linkgraph update settings from days to seconds. */
if (IsSavegameVersionBefore(SLV_LINKGRAPH_SECONDS)) {
_settings_game.linkgraph.recalc_interval *= CalendarTime::SECONDS_PER_DAY;
_settings_game.linkgraph.recalc_time *= CalendarTime::SECONDS_PER_DAY;
}
/* Load the sprites */
GfxLoadSprites();
LoadStringWidthTable();
/* Copy temporary data to Engine pool */
CopyTempEngineData();
/* Connect front and rear engines of multiheaded trains and converts
* subtype to the new format */
if (IsSavegameVersionBefore(SLV_17, 1)) ConvertOldMultiheadToNew();
/* Connect front and rear engines of multiheaded trains */
ConnectMultiheadedTrains();
/* Fix the CargoPackets *and* fix the caches of CargoLists.
* If this isn't done before Stations and especially Vehicles are
* running their AfterLoad we might get in trouble. In the case of
* vehicles we could give the wrong (cached) count of items in a
* vehicle which causes different results when getting their caches
* filled; and that could eventually lead to desyncs. */
CargoPacket::AfterLoad();
/* Oilrig was moved from id 15 to 9. We have to do this conversion
* here as AfterLoadVehicles can check it indirectly via the newgrf
* code. */
if (IsSavegameVersionBefore(SLV_139)) {
for (Station *st : Station::Iterate()) {
if (st->airport.tile != INVALID_TILE && st->airport.type == 15) {
st->airport.type = AT_OILRIG;
}
}
}
/* Update all vehicles */
AfterLoadVehicles(true);
/* make sure there is a town in the game */
if (_game_mode == GM_NORMAL && Town::GetNumItems() == 0) {
SetSaveLoadError(STR_ERROR_NO_TOWN_IN_SCENARIO);
/* Restore the signals */
ResetSignalHandlers();
return false;
}
/* The void tiles on the southern border used to belong to a wrong class (pre 4.3).
* This problem appears in savegame version 21 too, see r3455. But after loading the
* savegame and saving again, the buggy map array could be converted to new savegame
* version. It didn't show up before r12070. */
if (IsSavegameVersionBefore(SLV_87)) UpdateVoidTiles();
/* Fix the cache for cargo payments. */
for (CargoPayment *cp : CargoPayment::Iterate()) {
cp->front->cargo_payment = cp;
cp->current_station = cp->front->last_station_visited;
}
if (IsSavegameVersionBefore(SLV_72)) {
/* Locks in very old savegames had OWNER_WATER as owner */
for (auto t : Map::Iterate()) {
switch (GetTileType(t)) {
default: break;
case MP_WATER:
if (GetWaterTileType(t) == WATER_TILE_LOCK && GetTileOwner(t) == OWNER_WATER) SetTileOwner(t, OWNER_NONE);
break;
case MP_STATION: {
if (HasBit(t.m6(), 3)) SetBit(t.m6(), 2);
StationGfx gfx = GetStationGfx(t);
StationType st;
if ( IsInsideMM(gfx, 0, 8)) { // Rail station
st = STATION_RAIL;
SetStationGfx(t, gfx - 0);
} else if (IsInsideMM(gfx, 8, 67)) { // Airport
st = STATION_AIRPORT;
SetStationGfx(t, gfx - 8);
} else if (IsInsideMM(gfx, 67, 71)) { // Truck
st = STATION_TRUCK;
SetStationGfx(t, gfx - 67);
} else if (IsInsideMM(gfx, 71, 75)) { // Bus
st = STATION_BUS;
SetStationGfx(t, gfx - 71);
} else if (gfx == 75) { // Oil rig
st = STATION_OILRIG;
SetStationGfx(t, gfx - 75);
} else if (IsInsideMM(gfx, 76, 82)) { // Dock
st = STATION_DOCK;
SetStationGfx(t, gfx - 76);
} else if (gfx == 82) { // Buoy
st = STATION_BUOY;
SetStationGfx(t, gfx - 82);
} else if (IsInsideMM(gfx, 83, 168)) { // Extended airport
st = STATION_AIRPORT;
SetStationGfx(t, gfx - 83 + 67 - 8);
} else if (IsInsideMM(gfx, 168, 170)) { // Drive through truck
st = STATION_TRUCK;
SetStationGfx(t, gfx - 168 + GFX_TRUCK_BUS_DRIVETHROUGH_OFFSET);
} else if (IsInsideMM(gfx, 170, 172)) { // Drive through bus
st = STATION_BUS;
SetStationGfx(t, gfx - 170 + GFX_TRUCK_BUS_DRIVETHROUGH_OFFSET);
} else {
/* Restore the signals */
ResetSignalHandlers();
return false;
}
SB(t.m6(), 3, 3, st);
break;
}
}
}
}
for (auto t : Map::Iterate()) {
switch (GetTileType(t)) {
case MP_STATION: {
BaseStation *bst = BaseStation::GetByTile(t);
/* Sanity check */
if (!IsBuoy(t) && bst->owner != GetTileOwner(t)) SlErrorCorrupt("Wrong owner for station tile");
/* Set up station spread */
bst->rect.BeforeAddTile(t, StationRect::ADD_FORCE);
/* Waypoints don't have road stops/oil rigs in the old format */
if (!Station::IsExpected(bst)) break;
Station *st = Station::From(bst);
switch (GetStationType(t)) {
case STATION_TRUCK:
case STATION_BUS:
if (IsSavegameVersionBefore(SLV_6)) {
/* Before version 5 you could not have more than 250 stations.
* Version 6 adds large maps, so you could only place 253*253
* road stops on a map (no freeform edges) = 64009. So, yes
* someone could in theory create such a full map to trigger
* this assertion, it's safe to assume that's only something
* theoretical and does not happen in normal games. */
assert(RoadStop::CanAllocateItem());
/* From this version on there can be multiple road stops of the
* same type per station. Convert the existing stops to the new
* internal data structure. */
RoadStop *rs = new RoadStop(t);
RoadStop **head =
IsTruckStop(t) ? &st->truck_stops : &st->bus_stops;
*head = rs;
}
break;
case STATION_OILRIG: {
/* The internal encoding of oil rigs was changed twice.
* It was 3 (till 2.2) and later 5 (till 5.1).
* DeleteOilRig asserts on the correct type, and
* setting it unconditionally does not hurt.
*/
Station::GetByTile(t)->airport.type = AT_OILRIG;
/* Very old savegames sometimes have phantom oil rigs, i.e.
* an oil rig which got shut down, but not completely removed from
* the map
*/
TileIndex t1 = TILE_ADDXY(t, 0, 1);
if (!IsTileType(t1, MP_INDUSTRY) || GetIndustryGfx(t1) != GFX_OILRIG_1) {
DeleteOilRig(t);
}
break;
}
default: break;
}
break;
}
default: break;
}
}
/* In version 6.1 we put the town index in the map-array. To do this, we need
* to use m2 (16bit big), so we need to clean m2, and that is where this is
* all about ;) */
if (IsSavegameVersionBefore(SLV_6, 1)) {
for (auto t : Map::Iterate()) {
switch (GetTileType(t)) {
case MP_HOUSE:
t.m4() = t.m2();
SetTownIndex(t, CalcClosestTownFromTile(t)->index);
break;
case MP_ROAD:
t.m4() |= (t.m2() << 4);
if ((GB(t.m5(), 4, 2) == ROAD_TILE_CROSSING ? (Owner)t.m3() : GetTileOwner(t)) == OWNER_TOWN) {
SetTownIndex(t, CalcClosestTownFromTile(t)->index);
} else {
SetTownIndex(t, 0);
}
break;
default: break;
}
}
}
/* Force the freeform edges to false for old savegames. */
if (IsSavegameVersionBefore(SLV_111)) {
_settings_game.construction.freeform_edges = false;
}
/* From version 9.0, we update the max passengers of a town (was sometimes negative
* before that. */
if (IsSavegameVersionBefore(SLV_9)) {
for (Town *t : Town::Iterate()) UpdateTownMaxPass(t);