Code updating data after game load. More...

#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_economy.h"
#include "../timer/timer_game_tick.h"
#include "saveload_internal.h"
#include <signal.h>
#include "../safeguards.h"
#include "window_func.h"

Typedefs
typedef void(CDECL *	SignalHandlerPointer) (int)

Functions
Company *	DoStartupNewCompany (bool is_ai, CompanyID company=INVALID_COMPANY)
	Create a new company and sets all company variables default values. More...

void	SetWaterClassDependingOnSurroundings (Tile t, bool include_invalid_water_class)
	Makes a tile canal or water depending on the surroundings. More...

static void	ConvertTownOwner ()

static void	UpdateExclusiveRights ()

static void	UpdateCurrencies ()

static void	UpdateVoidTiles ()

static RailType	UpdateRailType (RailType rt, RailType min)

void	UpdateAllVirtCoords ()
	Update the viewport coordinates of all signs.

void	ClearAllCachedNames ()

static void	InitializeWindowsAndCaches ()
	Initialization of the windows and several kinds of caches. More...

static void CDECL	HandleSavegameLoadCrash (int signum)
	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. More...

static void	SetSignalHandlers ()
	Replaces signal handlers of SIGSEGV and SIGABRT and stores pointers to original handlers in memory.

static void	ResetSignalHandlers ()
	Resets signal handlers back to original handlers.

bool	SaveloadCrashWithMissingNewGRFs ()
	Did loading the savegame cause a crash? If so, were NewGRFs missing? More...

static void	FixOwnerOfRailTrack (Tile t)
	Tries to change owner of this rail tile to a valid owner. More...

static uint	FixVehicleInclination (Vehicle *v, Direction dir)
	Fixes inclination of a vehicle. More...

static void	CheckGroundVehiclesAtCorrectZ ()
	Check whether the ground vehicles are at the correct Z-coordinate. More...

static bool	MayHaveBridgeAbove (Tile t)
	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. More...

static void	StartScripts ()
	Start the scripts.

bool	AfterLoadGame ()
	Perform a (large) amount of savegame conversion magic in order to load older savegames and to fill the caches for various purposes. More...

void	ReloadNewGRFData ()
	Reload all NewGRF files during a running game. More...

Variables
static const uint8_t	convert_currency []

static SignalHandlerPointer	_prev_segfault = nullptr

static SignalHandlerPointer	_prev_abort = nullptr

static SignalHandlerPointer	_prev_fpe = nullptr

static bool	_saveload_crash_with_missing_newgrfs = false
	Was the saveload crash because of missing NewGRFs?

Detailed Description

Code updating data after game load.

Definition in file afterload.cpp.

Function Documentation

◆ AfterLoadGame()

bool AfterLoadGame ( )

Perform a (large) amount of savegame conversion magic in order to load older savegames and to fill the caches for various purposes.

Returns: True iff conversion went without a problem.

< Flag for coast.

Definition at line 565 of file afterload.cpp.

References SetSignalHandlers().

◆ CheckGroundVehiclesAtCorrectZ()

static void CheckGroundVehiclesAtCorrectZ ( )

static

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.

Definition at line 516 of file afterload.cpp.

References GetSlopePixelZ(), Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem<&_vehicle_pool >::Iterate(), and TileVirtXY().

◆ DoStartupNewCompany()

Company* DoStartupNewCompany	(	bool	is_ai,
		CompanyID	company = `INVALID_COMPANY`
	)

Create a new company and sets all company variables default values.

Parameters

is_ai	is an AI company?
company	CompanyID to use for the new company

Returns: the company struct

Definition at line 585 of file company_cmd.cpp.

References _company_colours, Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem<&_company_pool >::CanAllocateItem(), CompanyProperties::colour, CompanyProperties::current_loan, GenerateCompanyColour(), Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem< Tpool >::index, INITIAL_LOAN, INVALID_COMPANY, Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem<&_company_pool >::IsValidID(), CompanyProperties::money, and ResetCompanyLivery().

Referenced by CmdCompanyCtrl().

◆ FixOwnerOfRailTrack()

static void FixOwnerOfRailTrack ( Tile t )

static

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.

Parameters

t	tile to update

Definition at line 423 of file afterload.cpp.

References DIAGDIR_BEGIN, DIAGDIR_END, GetRoadOwner(), GetTileOwner(), GetTileTrackStatus(), IsLevelCrossingTile(), IsPlainRailTile(), Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tpool_type, Tcache, Tzero >::PoolItem<&_company_pool >::IsValidID(), SpecializedVehicle< T, Type >::Iterate(), Vehicle::owner, ReverseDiagDir(), SetTileOwner(), TileOffsByDiagDir(), and TRANSPORT_RAIL.

◆ FixVehicleInclination()

static uint FixVehicleInclination	(	Vehicle *	v,
		Direction	dir
	)

static

Fixes inclination of a vehicle.

Older OpenTTD versions didn't update the bits correctly.

Parameters

v	vehicle
dir	vehicle's direction, or # INVALID_DIR if it can be ignored

Returns: inclination bits to set

Definition at line 481 of file afterload.cpp.

References DIR_NE, DIR_NW, DIR_SE, DIR_SW, INVALID_DIR, TILE_UNIT_MASK, Vehicle::x_pos, and Vehicle::y_pos.

◆ HandleSavegameLoadCrash()

static void CDECL HandleSavegameLoadCrash ( int signum )

static

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.

Parameters

signum received signal

Definition at line 363 of file afterload.cpp.

References _gamelog, _grfconfig, _saveload_crash_with_missing_newgrfs, BSWAP32(), FormatArrayAsHex(), GCF_COMPATIBLE, GCS_NOT_FOUND, Gamelog::GetOverriddenIdentifier(), HasBit(), GRFIdentifier::md5sum, GRFConfig::next, and ResetSignalHandlers().

◆ InitializeWindowsAndCaches()

static void InitializeWindowsAndCaches ( )

static

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.

Definition at line 248 of file afterload.cpp.

References ResetWindowSystem(), and SetupColoursAndInitialWindow().

◆ MayHaveBridgeAbove()

static bool MayHaveBridgeAbove ( Tile t )

inlinestatic

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.

Parameters

t	The tile to analyze

Returns: True if a bridge might have been present prior to savegame 194.

Definition at line 536 of file afterload.cpp.

References IsTileType(), MP_CLEAR, MP_OBJECT, MP_RAILWAY, MP_ROAD, MP_TUNNELBRIDGE, and MP_WATER.

◆ ReloadNewGRFData()

void ReloadNewGRFData ( )

Reload all NewGRF files during a running game.

This is a cut-down version of AfterLoadGame(). XXX - We need to reset the vehicle position hash because with a non-empty hash AfterLoadVehicles() will loop infinitely. We need AfterLoadVehicles() to recalculate vehicle data as some NewGRF vehicle sets could have been removed or added and changed statistics

Definition at line 3364 of file afterload.cpp.

References GfxLoadSprites(), LoadStringWidthTable(), and RecomputePrices().

Referenced by ClickChangeMaxHlCheat(), and NewGRFConfirmationCallback().

◆ SaveloadCrashWithMissingNewGRFs()

bool SaveloadCrashWithMissingNewGRFs ( )

Did loading the savegame cause a crash? If so, were NewGRFs missing?

Returns: when the saveload crashed due to missing NewGRFs.

Definition at line 352 of file afterload.cpp.

References _saveload_crash_with_missing_newgrfs.

Referenced by HandleCrash().

◆ SetWaterClassDependingOnSurroundings()

void SetWaterClassDependingOnSurroundings	(	Tile	t,
		bool	include_invalid_water_class
	)

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.

Parameters

t	the tile to change.
include_invalid_water_class	Also consider WATER_CLASS_INVALID, i.e. industry tiles on land

Definition at line 85 of file afterload.cpp.

References DIAGDIR_BEGIN, DIAGDIR_END, GetTileType(), GetWaterClass(), IsCoast(), IsLock(), IsTileFlat(), MarkTileDirtyByTile(), Map::MaxX(), Map::MaxY(), MP_RAILWAY, MP_WATER, SetWaterClass(), SlErrorCorrupt(), TileAddByDiagDir(), TileX(), TileY(), WATER_CLASS_CANAL, WATER_CLASS_INVALID, WATER_CLASS_RIVER, and WATER_CLASS_SEA.

Variable Documentation

◆ convert_currency

const uint8_t convert_currency[]

static

Initial value:

= {
   0,  1, 12,  8,  3,
  10, 14, 19,  4,  5,
   9, 11, 13,  6, 17,
  16, 22, 21,  7, 15,
  18,  2, 20,
}

Definition at line 192 of file afterload.cpp.

Typedefs

Functions

Variables

Detailed Description

Function Documentation

◆ AfterLoadGame()

◆ CheckGroundVehiclesAtCorrectZ()

◆ DoStartupNewCompany()

◆ FixOwnerOfRailTrack()

◆ FixVehicleInclination()

◆ HandleSavegameLoadCrash()

◆ InitializeWindowsAndCaches()

◆ MayHaveBridgeAbove()

◆ ReloadNewGRFData()

◆ SaveloadCrashWithMissingNewGRFs()

◆ SetWaterClassDependingOnSurroundings()

Variable Documentation

◆ convert_currency