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gamelog.h File Reference

Functions to be called to log possibly unsafe game events. More...

`#include "newgrf_config.h"`

Go to the source code of this file.

## Typedefs
typedef void | GamelogPrintProc (const char *s)
| Callback for printing text.

## Enumerations
enum | GamelogActionType { GLAT_START, GLAT_LOAD, GLAT_GRF, GLAT_CHEAT, GLAT_SETTING, GLAT_GRFBUG, GLAT_EMERGENCY, GLAT_END, GLAT_NONE = 0xFF }
| The actions we log. More...

## Functions
void | GamelogStartAction (GamelogActionType at)
| Stores information about new action, but doesn't allocate it Action is allocated only when there is at least one change.
void | GamelogStopAction ()
| Stops logging of any changes.
void | GamelogFree (struct LoggedAction *gamelog_action, uint gamelog_actions)
| Frees the memory allocated by a gamelog.
void | GamelogReset ()
| Resets and frees all memory allocated - used before loading or starting a new game.
void | GamelogPrint (GamelogPrintProc *proc)
| Prints active gamelog.
void | GamelogPrintDebug (int level)
| Prints gamelog to debug output.
void | GamelogPrintConsole ()
| Print the gamelog data to the console.
void | GamelogEmergency ()
| Logs a emergency savegame.
bool | GamelogTestEmergency ()
| Finds out if current game is a loaded emergency savegame.
void | GamelogRevision ()
| Logs a change in game revision.
void | GamelogMode ()
| Logs a change in game mode (scenario editor or game)
void | GamelogOldver ()
| Logs loading from savegame without gamelog.
void | GamelogSetting (const char *name, int32 oldval, int32 newval)
| Logs change in game settings.
void | GamelogGRFUpdate (const GRFConfig *oldg, const GRFConfig *newg)
| Compares two NewGRF lists and logs any change.
void | GamelogGRFAddList (const GRFConfig *newg)
| Logs adding of list of GRFs.
void | GamelogGRFRemove (uint32 grfid)
| Logs removal of a GRF.
void | GamelogGRFAdd (const GRFConfig *newg)
| Logs adding of a GRF.
void | GamelogGRFCompatible (const GRFIdentifier *newg)
| Logs loading compatible GRF (the same ID, but different MD5 hash)
void | GamelogTestRevision ()
| Finds out if current revision is different than last revision stored in the savegame.
void | GamelogTestMode ()
| Finds last stored game mode or landscape.
bool | GamelogGRFBugReverse (uint32 grfid, uint16 internal_id)
| Logs GRF bug - rail vehicle has different length after reversing.
void | GamelogInfo (struct LoggedAction *gamelog_action, uint gamelog_actions, uint32 *last_ottd_rev, byte *ever_modified, bool *removed_newgrfs)
| Get some basic information from the given gamelog.

## Detailed Description

Functions to be called to log possibly unsafe game events.

Definition in file gamelog.h.

## Typedef Documentation

typedef void GamelogPrintProc(const char *s)

Callback for printing text.

Parameters

  s | The string to print.

Definition at line 40 of file gamelog.h.

## Enumeration Type Documentation

enum GamelogActionType

The actions we log.

Enumerator:

  GLAT_START | Game created.
  GLAT_LOAD | Game loaded.
  GLAT_GRF | GRF changed.
  GLAT_CHEAT | Cheat was used.
  GLAT_SETTING | Setting changed.
  GLAT_GRFBUG | GRF bug was triggered.
  GLAT_EMERGENCY | Emergency savegame.
  GLAT_END | So we know how many GLATs are there.
  GLAT_NONE | No logging active; in savegames, end of list.

Definition at line 18 of file gamelog.h.

## Function Documentation

void GamelogGRFAdd | ( | const GRFConfig * | newg | ) |

Logs adding of a GRF.

Parameters

  newg | added GRF

Definition at line 590 of file gamelog.cpp.

References _gamelog_action_type, GamelogChange(), GLAT_GRF, GLAT_LOAD, GLAT_START, GLCT_GRFADD, LoggedChange::grfadd, GRFConfig::ident, and IsLoggableGrfConfig().

Referenced by GamelogGRFAddList(), and GamelogGRFUpdate().

void GamelogGRFAddList | ( | const GRFConfig * | newg | ) |

Logs adding of list of GRFs.

Useful when old savegame is loaded or when new game is started

Parameters

  newg | head of GRF linked list

Definition at line 653 of file gamelog.cpp.

References _gamelog_action_type, GamelogGRFAdd(), GLAT_LOAD, GLAT_START, and GRFConfig::next.

Referenced by AfterLoadGame().

bool GamelogGRFBugReverse | ( | uint32 | grfid,
|  | uint16 | internal_id
| ) |  |

Logs GRF bug - rail vehicle has different length after reversing.

Ensures this is logged only once for each GRF and engine type This check takes some time, but it is called pretty seldom, so it doesn't matter that much (ideally it shouldn't be called at all).

Parameters

  grfid | the broken NewGRF
  internal_id | the internal ID of whatever's broken in the NewGRF

Returns
  true iff a unique record was done

Definition at line 541 of file gamelog.cpp.

References _gamelog_actions, GamelogGRFBug(), GamelogStartAction(), GamelogStopAction(), GBUG_VEH_LENGTH, GLAT_GRFBUG, and GLCT_GRFBUG.

Referenced by VehicleLengthChanged().

void GamelogGRFCompatible | ( | const GRFIdentifier * | newg | ) |

Logs loading compatible GRF (the same ID, but different MD5 hash)

Parameters

  newg | new (updated) GRF

Definition at line 607 of file gamelog.cpp.

References _gamelog_action_type, GamelogChange(), GLAT_GRF, GLAT_LOAD, GLCT_GRFCOMPAT, and LoggedChange::grfcompat.

Referenced by AfterLoadGame(), and GamelogGRFUpdate().

void GamelogGRFRemove | ( | uint32 | grfid | ) |

Logs removal of a GRF.

Parameters

  grfid | ID of removed GRF

Definition at line 576 of file gamelog.cpp.

References _gamelog_action_type, GamelogChange(), GLAT_GRF, GLAT_LOAD, and GLCT_GRFREM.

Referenced by AfterLoadGame(), and GamelogGRFUpdate().

void GamelogGRFUpdate | ( | const GRFConfig * | oldc,
|  | const GRFConfig * | newc
| ) |  |

Compares two NewGRF lists and logs any change.

Parameters

  oldc | original GRF list
  newc | new GRF list

Definition at line 694 of file gamelog.cpp.

References free(), GamelogGRFAdd(), GamelogGRFCompatible(), GamelogGRFMove(), GamelogGRFParameters(), GamelogGRFRemove(), GenerateGRFList(), GRFIdentifier::grfid, GRFConfig::ident, GRFIdentifier::md5sum, GRFConfig::num_params, and GRFConfig::param.

Referenced by NewGRFConfirmationCallback().

void GamelogInfo | ( | LoggedAction * | gamelog_action,
|  | uint | gamelog_actions,
|  | uint32 * | last_ottd_rev,
|  | byte * | ever_modified,
|  | bool * | removed_newgrfs
| ) |  |

Get some basic information from the given gamelog.

Parameters

  | gamelog_action | Pointer to the gamelog to extract information from.
  | gamelog_actions | Number of actions in the given gamelog.
  [out] | last_ottd_rev | OpenTTD NewGRF version from the binary that saved the savegame last.
  [out] | ever_modified | Max value of 'modified' from all binaries that ever saved this savegame.
  [out] | removed_newgrfs | Set to true if any NewGRFs have been removed.

Definition at line 778 of file gamelog.cpp.

References GLCT_GRFREM, GLCT_REVISION, and max().

void GamelogPrint | ( | GamelogPrintProc * | proc | ) |

Prints active gamelog.

Parameters

  proc | the procedure to draw with

Definition at line 164 of file gamelog.cpp.

References _gamelog_actions, abs(), BSWAP32(), SmallMap< T, U, S >::Contains(), SmallVector< T, S >::End(), SmallMap< T, U, S >::Erase(), FGCM_EXACT, SmallMap< T, U, S >::Find(), FindGRFConfig(), GB(), GBUG_VEH_LENGTH, GLAT_END, GLAT_LOAD, GLCT_EMERGENCY, GLCT_GRFADD, GLCT_GRFBUG, GLCT_GRFCOMPAT, GLCT_GRFMOVE, GLCT_GRFPARAM, GLCT_GRFREM, GLCT_MODE, GLCT_OLDVER, GLCT_REVISION, GLCT_SETTING, la_text, lastof, PrintGrfInfo(), seprintf(), SGT_OTTD, SGT_TTD, SGT_TTDP1, SGT_TTDP2, and SGT_TTO.

Referenced by GamelogPrintConsole(), GamelogPrintDebug(), and CrashLog::LogGamelog().

void GamelogPrintConsole | ( |  | ) |

Print the gamelog data to the console.

Definition at line 322 of file gamelog.cpp.

References GamelogPrint().

void GamelogPrintDebug | ( | int | level | ) |

Prints gamelog to debug output.

Code is executed even when there will be no output. It is called very seldom, so it doesn't matter that much. At least it gives more uniform code...

Parameters

  level | debug level we need to print stuff

Definition at line 341 of file gamelog.cpp.

References GamelogPrint().

Referenced by AfterLoadGame(), and GamelogStopAction().

void GamelogSetting | ( | const char * | name,
|  | int32 | oldval,
|  | int32 | newval
| ) |  |

Logs change in game settings.

Only non-networksafe settings are logged

Parameters

  name | setting name
  oldval | old setting value
  newval | new setting value

Definition at line 458 of file gamelog.cpp.

References _gamelog_action_type, GamelogChange(), GLAT_SETTING, GLCT_SETTING, and stredup().

Referenced by CmdChangeSetting().

void GamelogStartAction | ( | GamelogActionType | at | ) |

Stores information about new action, but doesn't allocate it Action is allocated only when there is at least one change.

Parameters

  at | type of action

Definition at line 47 of file gamelog.cpp.

References _gamelog_action_type, and GLAT_NONE.

Referenced by CmdChangeSetting(), DoLoad(), GamelogEmergency(), GamelogGRFBugReverse(), NewGRFConfirmationCallback(), and SaveOrLoad().

void GamelogTestMode | ( |  | ) |

Finds last stored game mode or landscape.

Any change is logged

Definition at line 498 of file gamelog.cpp.

References _gamelog_actions, _settings_game, GameSettings::game_creation, GamelogMode(), GLCT_MODE, GameCreationSettings::landscape, and LoggedChange::mode.

Referenced by AfterLoadGame().

void GamelogTestRevision | ( |  | ) |

Finds out if current revision is different than last revision stored in the savegame.

Appends GLCT_REVISION when the revision string changed

Definition at line 475 of file gamelog.cpp.

References _gamelog_actions, GamelogRevision(), and GLCT_REVISION.

Referenced by AfterLoadGame().