OpenTTD Source  20241120-master-g6d3adc6169
newgrf_config.cpp File Reference

Finding NewGRFs and configuring them. More...

#include "stdafx.h"
#include "debug.h"
#include "3rdparty/md5/md5.h"
#include "newgrf.h"
#include "network/network_func.h"
#include "gfx_func.h"
#include "newgrf_text.h"
#include "window_func.h"
#include "progress.h"
#include "video/video_driver.hpp"
#include "string_func.h"
#include "strings_func.h"
#include "textfile_gui.h"
#include "thread.h"
#include "newgrf_config.h"
#include "fileio_func.h"
#include "fios.h"
#include "safeguards.h"

Go to the source code of this file.

Data Structures

class  GRFFileScanner
 Helper for scanning for files with GRF as extension. More...
 

Functions

void UpdateNewGRFConfigPalette (int32_t)
 Update the palettes of the graphics from the config file. More...
 
size_t GRFGetSizeOfDataSection (FileHandle &f)
 Get the data section size of a GRF. More...
 
static bool CalcGRFMD5Sum (GRFConfig *config, Subdirectory subdir)
 Calculate the MD5 sum for a GRF, and store it in the config. More...
 
bool FillGRFDetails (GRFConfig *config, bool is_static, Subdirectory subdir)
 Find the GRFID of a given grf, and calculate its md5sum. More...
 
void ClearGRFConfigList (GRFConfig **config)
 Clear a GRF Config list, freeing all nodes. More...
 
GRFConfig ** CopyGRFConfigList (GRFConfig **dst, const GRFConfig *src, bool init_only)
 Copy a GRF Config list. More...
 
static void RemoveDuplicatesFromGRFConfigList (GRFConfig *list)
 Removes duplicates from lists of GRFConfigs. More...
 
void AppendStaticGRFConfigs (GRFConfig **dst)
 Appends the static GRFs to a list of GRFs. More...
 
void AppendToGRFConfigList (GRFConfig **dst, GRFConfig *el)
 Appends an element to a list of GRFs. More...
 
void ResetGRFConfig (bool defaults)
 Reset the current GRF Config to either blank or newgame settings.
 
GRFListCompatibility IsGoodGRFConfigList (GRFConfig *grfconfig)
 Check if all GRFs in the GRF config from a savegame can be loaded. More...
 
static bool GRFSorter (GRFConfig *const &c1, GRFConfig *const &c2)
 Simple sorter for GRFS. More...
 
void DoScanNewGRFFiles (NewGRFScanCallback *callback)
 Really perform the scan for all NewGRFs. More...
 
void ScanNewGRFFiles (NewGRFScanCallback *callback)
 Scan for all NewGRFs. More...
 
const GRFConfigFindGRFConfig (uint32_t grfid, FindGRFConfigMode mode, const MD5Hash *md5sum, uint32_t desired_version)
 Find a NewGRF in the scanned list. More...
 
GRFConfigGetGRFConfig (uint32_t grfid, uint32_t mask)
 Retrieve a NewGRF from the current config by its grfid. More...
 
std::string GRFBuildParamList (const GRFConfig *c)
 Build a string containing space separated parameter values, and terminate.
 

Variables

GRFConfig_all_grfs
 First item in list of all scanned NewGRFs.
 
GRFConfig_grfconfig
 First item in list of current GRF set up.
 
GRFConfig_grfconfig_newgame
 First item in list of default GRF set up.
 
GRFConfig_grfconfig_static
 First item in list of static GRF set up.
 
uint _missing_extra_graphics = 0
 Number of sprites provided by the fallback extra GRF, i.e. missing in the baseset.
 
int _skip_all_newgrf_scanning = 0
 Set this flag to prevent any NewGRF scanning from being done.
 

Detailed Description

Finding NewGRFs and configuring them.

Definition in file newgrf_config.cpp.

Function Documentation

◆ AppendStaticGRFConfigs()

void AppendStaticGRFConfigs ( GRFConfig **  dst)

Appends the static GRFs to a list of GRFs.

Parameters
dstthe head of the list to add to

Definition at line 422 of file newgrf_config.cpp.

References _grfconfig_static, CopyGRFConfigList(), GRFConfig::next, and RemoveDuplicatesFromGRFConfigList().

Referenced by ResetGRFConfig().

◆ AppendToGRFConfigList()

void AppendToGRFConfigList ( GRFConfig **  dst,
GRFConfig el 
)

Appends an element to a list of GRFs.

Parameters
dstthe head of the list to add to
elthe new tail to be

Definition at line 436 of file newgrf_config.cpp.

References GRFConfig::next, and RemoveDuplicatesFromGRFConfigList().

◆ CalcGRFMD5Sum()

static bool CalcGRFMD5Sum ( GRFConfig config,
Subdirectory  subdir 
)
static

Calculate the MD5 sum for a GRF, and store it in the config.

Parameters
configGRF to compute.
subdirThe subdirectory to look in.
Returns
MD5 sum was successfully computed

Definition at line 285 of file newgrf_config.cpp.

References GRFConfig::filename, FioFOpenFile(), GRFGetSizeOfDataSection(), GRFConfig::ident, and GRFIdentifier::md5sum.

◆ ClearGRFConfigList()

void ClearGRFConfigList ( GRFConfig **  config)

Clear a GRF Config list, freeing all nodes.

Parameters
configStart of the list.
Postcondition
config is set to nullptr.

Definition at line 352 of file newgrf_config.cpp.

References GRFConfig::next.

Referenced by LoadCheckData::Clear(), CopyGRFConfigList(), DoScanNewGRFFiles(), NetworkAddServer(), NetworkGameListRemoveExpired(), NetworkGameListRemoveItem(), ClientNetworkCoordinatorSocketHandler::Receive_GC_LISTING(), and QueryNetworkGameSocketHandler::Receive_SERVER_GAME_INFO().

◆ CopyGRFConfigList()

GRFConfig** CopyGRFConfigList ( GRFConfig **  dst,
const GRFConfig src,
bool  init_only 
)

Copy a GRF Config list.

Parameters
dstpointer to destination list
srcpointer to source list values
init_onlythe copied GRF will be processed up to GLS_INIT
Returns
pointer to the last value added to the destination list

Definition at line 370 of file newgrf_config.cpp.

References ClearGRFConfigList(), ClrBit(), GRFConfig::flags, GCF_INIT_ONLY, GRFConfig::next, and SetBit().

Referenced by AppendStaticGRFConfigs(), NewGRFConfirmationCallback(), and ResetGRFConfig().

◆ DoScanNewGRFFiles()

void DoScanNewGRFFiles ( NewGRFScanCallback callback)

◆ FillGRFDetails()

bool FillGRFDetails ( GRFConfig config,
bool  is_static,
Subdirectory  subdir 
)

Find the GRFID of a given grf, and calculate its md5sum.

Parameters
configgrf to fill.
is_staticgrf is static.
subdirthe subdirectory to search in.
Returns
Operation was successfully completed.

Definition at line 320 of file newgrf_config.cpp.

References GRFConfig::filename, FioCheckFileExists(), GCS_NOT_FOUND, LoadNewGRFFile(), and GRFConfig::status.

Referenced by GraphicsSet::GetOrCreateExtraConfig(), and GRFLoadConfig().

◆ FindGRFConfig()

const GRFConfig* FindGRFConfig ( uint32_t  grfid,
FindGRFConfigMode  mode,
const MD5Hash *  md5sum,
uint32_t  desired_version 
)

Find a NewGRF in the scanned list.

Parameters
grfidGRFID to look for,
modeRestrictions for matching grfs
md5sumExpected MD5 sum
desired_versionRequested version
Returns
The matching grf, if it exists in _all_grfs, else nullptr.

Definition at line 686 of file newgrf_config.cpp.

References _all_grfs, FGCM_ANY, FGCM_COMPATIBLE, FGCM_EXACT, FGCM_NEWEST, GCF_INVALID, HasBit(), GRFConfig::next, and GRFConfig::version.

Referenced by AddGrfInfo(), GRFLoadConfig(), HasGRFConfig(), IsGoodGRFConfigList(), NetworkAfterNewGRFScan(), NewGRFWindow::OnInvalidateData(), and ClientNetworkGameSocketHandler::Receive_SERVER_CHECK_NEWGRFS().

◆ GetGRFConfig()

GRFConfig* GetGRFConfig ( uint32_t  grfid,
uint32_t  mask 
)

Retrieve a NewGRF from the current config by its grfid.

Parameters
grfidgrf to look for.
maskGRFID mask to allow for partial matching.
Returns
The grf config, if it exists, else nullptr.

Definition at line 712 of file newgrf_config.cpp.

References _grfconfig, GRFIdentifier::grfid, GRFConfig::ident, and GRFConfig::next.

Referenced by ShowNewGrfVehicleError(), TranslateGRFStrings(), and VehicleLengthChanged().

◆ GRFGetSizeOfDataSection()

size_t GRFGetSizeOfDataSection ( FileHandle f)

Get the data section size of a GRF.

Parameters
fGRF.
Returns
Size of the data section or SIZE_MAX if the file has no separate data section.

Definition at line 255 of file newgrf_config.cpp.

References _grf_cont_v2_sig, Debug, and MemCmpT().

Referenced by CalcGRFMD5Sum(), and GraphicsSet::CheckMD5().

◆ GRFSorter()

static bool GRFSorter ( GRFConfig *const &  c1,
GRFConfig *const &  c2 
)
static

Simple sorter for GRFS.

Parameters
c1the first GRFConfig *
c2the second GRFConfig *
Returns
true if the name of first NewGRF is before the name of the second.

Definition at line 612 of file newgrf_config.cpp.

References GRFConfig::GetName(), and StrNaturalCompare().

Referenced by DoScanNewGRFFiles().

◆ IsGoodGRFConfigList()

GRFListCompatibility IsGoodGRFConfigList ( GRFConfig grfconfig)

Check if all GRFs in the GRF config from a savegame can be loaded.

Parameters
grfconfigGrfConfig to check
Returns
will return any of the following 3 values:
  • GLC_ALL_GOOD: No problems occurred, all GRF files were found and loaded
  • GLC_COMPATIBLE: For one or more GRF's no exact match was found, but a compatible GRF with the same grfid was found and used instead
  • GLC_NOT_FOUND: For one or more GRF's no match was found at all

Definition at line 465 of file newgrf_config.cpp.

References BSWAP32(), Debug, FGCM_COMPATIBLE, FGCM_EXACT, GRFConfig::filename, FindGRFConfig(), GRFConfig::flags, FormatArrayAsHex(), GCF_COMPATIBLE, GCF_COPY, GCF_INVALID, GCS_NOT_FOUND, GLC_ALL_GOOD, GLC_COMPATIBLE, GLC_NOT_FOUND, GRFIdentifier::grfid, GRFConfig::has_param_defaults, HasBit(), GRFConfig::ident, GRFIdentifier::md5sum, GRFConfig::min_loadable_version, GRFConfig::name, GRFConfig::next, GRFConfig::num_valid_params, GRFConfig::param_info, SetBit(), and GRFConfig::version.

◆ RemoveDuplicatesFromGRFConfigList()

static void RemoveDuplicatesFromGRFConfigList ( GRFConfig list)
static

Removes duplicates from lists of GRFConfigs.

These duplicates are introduced when the _grfconfig_static GRFs are appended to the _grfconfig on a newgame or savegame. As the parameters of the static GRFs could be different that the parameters of the ones used non-statically. This can result in desyncs in multiplayers, so the duplicate static GRFs have to be removed.

This function assumes that all static GRFs are placed after the non-static GRFs.

Parameters
listthe list to remove the duplicates from

Definition at line 400 of file newgrf_config.cpp.

References GRFIdentifier::grfid, GRFConfig::ident, and GRFConfig::next.

Referenced by AppendStaticGRFConfigs(), and AppendToGRFConfigList().

◆ ScanNewGRFFiles()

void ScanNewGRFFiles ( NewGRFScanCallback callback)

Scan for all NewGRFs.

Parameters
callbackThe callback to call after the scanning is complete.

Definition at line 668 of file newgrf_config.cpp.

References DoScanNewGRFFiles(), MarkWholeScreenDirty(), and SetModalProgress().

◆ UpdateNewGRFConfigPalette()

void UpdateNewGRFConfigPalette ( int32_t  new_value)

Update the palettes of the graphics from the config file.

Called when changing the default palette in advanced settings.

Definition at line 243 of file newgrf_config.cpp.

References _all_grfs, _grfconfig_newgame, _grfconfig_static, and GRFConfig::next.

Referenced by AfterNewGRFScan::OnNewGRFsScanned().