1

/* $Id$ */

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     3

/** @file gamelog.cpp Definition of functions used for logging of important changes in the game */

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#include "stdafx.h"

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#include "openttd.h"

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#include "saveload.h"

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#include "core/alloc_func.hpp"

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#include "core/bitmath_func.hpp"

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#include "core/math_func.hpp"

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#include "network/core/config.h"

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#include "variables.h"

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#include "string_func.h"

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#include "settings_type.h"

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#include "newgrf_config.h"

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#include <string.h>

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#include <stdarg.h>

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#include "gamelog.h"

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#include "console_func.h"

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#include "debug.h"

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#include "rev.h"

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extern const uint16 SAVEGAME_VERSION;  ///< current savegame version

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    25

extern SavegameType _savegame_type; ///< type of savegame we are loading

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extern uint32 _ttdp_version;     ///< version of TTDP savegame (if applicable)

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extern uint16 _sl_version;       ///< the major savegame version identifier

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extern byte   _sl_minor_version; ///< the minor savegame version, DO NOT USE!

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/** Type of logged change */

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enum GamelogChangeType {

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	GLCT_MODE,        ///< Scenario editor x Game, different landscape

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	GLCT_REVISION,    ///< Changed game revision string

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	GLCT_OLDVER,      ///< Loaded from savegame without logged data

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	GLCT_PATCH,       ///< Non-networksafe patch value changed

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	GLCT_GRFADD,      ///< Removed GRF

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	GLCT_GRFREM,      ///< Added GRF

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	GLCT_GRFCOMPAT,   ///< Loading compatible GRF

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	GLCT_GRFPARAM,    ///< GRF parameter changed

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	GLCT_GRFMOVE,     ///< GRF order changed

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	GLCT_END,         ///< So we know how many GLCTs are there

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	GLCT_NONE = 0xFF, ///< In savegames, end of list

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};

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    46

    47

/** Contains information about one logged change */

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struct LoggedChange {

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	GamelogChangeType ct; ///< Type of change logged in this struct

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	union {

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		struct {

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			byte mode;       ///< new game mode - Editor x Game

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			byte landscape;  ///< landscape (temperate, arctic, ...)

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		} mode;

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		struct {

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			char text[NETWORK_REVISION_LENGTH]; ///< revision string, _openttd_revision

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			uint32 newgrf;   ///< _openttd_newgrf_version

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			uint16 slver;    ///< _sl_version

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			byte modified;   ///< _openttd_revision_modified

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		} revision;

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		struct {

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			uint32 type;     ///< type of savegame, @see SavegameType

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			uint32 version;  ///< major and minor version OR ttdp version

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		} oldver;

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		GRFIdentifier grfadd;    ///< ID and md5sum of added GRF

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		struct {

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			uint32 grfid;    ///< ID of removed GRF

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		} grfrem;

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		GRFIdentifier grfcompat; ///< ID and new md5sum of changed GRF

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		struct {

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			uint32 grfid;    ///< ID of GRF with changed parameters

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		} grfparam;

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		struct {

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			uint32 grfid;    ///< ID of moved GRF

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			int32 offset;    ///< offset, positive = move down

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		} grfmove;

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		struct {

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			char *name;      ///< name of the patch

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			int32 oldval;    ///< old value

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			int32 newval;    ///< new value

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		} patch;

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	};

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};

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/** Contains information about one logged action that caused at least one logged change */

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struct LoggedAction {

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	LoggedChange *change; ///< First logged change in this action

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	uint32 changes;       ///< Number of changes in this action

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	GamelogActionType at; ///< Type of action

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	uint16 tick;          ///< Tick when it happened

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};

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    94

static GamelogActionType _gamelog_action_type = GLAT_NONE; ///< action to record if anything changes

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    96

static LoggedAction *_gamelog_action = NULL; ///< first logged action

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static uint _gamelog_actions         = 0;    ///< number of actions

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static LoggedAction *_current_action = NULL; ///< current action we are logging, NULL when there is no action active

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   100

   101

/** Stores information about new action, but doesn't allocate it

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 * Action is allocated only when there is at least one change

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 * @param at type of action

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 */

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void GamelogStartAction(GamelogActionType at)

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{

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	assert(_gamelog_action_type == GLAT_NONE); // do not allow starting new action without stopping the previous first

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	_gamelog_action_type = at;

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}

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/** Stops logging of any changes

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 */

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void GamelogStopAction()

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{

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	assert(_gamelog_action_type != GLAT_NONE); // nobody should try to stop if there is no action in progress

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   117

	_current_action = NULL;

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	_gamelog_action_type = GLAT_NONE;

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   120

	if (_debug_gamelog_level > 4) GamelogPrintDebug();

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}

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   123

/** Resets and frees all memory allocated - used before loading or starting a new game

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 */

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void GamelogReset()

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{

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	assert(_gamelog_action_type == GLAT_NONE);

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   129

	for (uint i = 0; i < _gamelog_actions; i++) {

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		const LoggedAction *la = &_gamelog_action[i];

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		for (uint j = 0; j < la->changes; j++) {

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			const LoggedChange *lc = &la->change[j];

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			if (lc->ct == GLCT_PATCH) free(lc->patch.name);

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		}

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		free(la->change);

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	}

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   138

	free(_gamelog_action);

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   140

	_gamelog_action  = NULL;

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	_gamelog_actions = 0;

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	_current_action  = NULL;

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}

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   145

enum {

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	GAMELOG_BUF_LEN = 1024 ///< length of buffer for one line of text

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};

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   149

static int _dbgofs = 0; ///< offset in current output buffer

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   151

static void AddDebugText(char *buf, const char *s, ...)

   152

{

   153

	if (GAMELOG_BUF_LEN <= _dbgofs) return;

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   155

	va_list va;

   156

   157

	va_start(va, s);

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	_dbgofs += vsnprintf(buf + _dbgofs, GAMELOG_BUF_LEN - _dbgofs, s, va);

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	va_end(va);

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}

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/** Prints GRF filename if found

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 * @param grfid GRF which filename to print

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 */

   166

static void PrintGrfFilename(char *buf, uint grfid)

   167

{

   168

	const GRFConfig *gc = FindGRFConfig(grfid);

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   170

	if (gc == NULL) return;

   171

   172

	AddDebugText(buf, ", filename: %s", gc->filename);

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}

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   175

/** Prints GRF ID, checksum and filename if found

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 * @param grfid GRF ID

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 * @param md5sum array of md5sum to print

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 */

   179

static void PrintGrfInfo(char *buf, uint grfid, const uint8 *md5sum)

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{

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	char txt[40];

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   183

	md5sumToString(txt, lastof(txt), md5sum);

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   185

	AddDebugText(buf, "GRF ID %08X, checksum %s", BSWAP32(grfid), txt);

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   187

	PrintGrfFilename(buf, grfid);

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   189

	return;

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}

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   192

   193

/** Text messages for various logged actions */

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static const char *la_text[] = {

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	"new game started",

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	"game loaded",

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	"GRF config changed",

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	"cheat was used",

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	"patch settings changed"

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};

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   202

assert_compile(lengthof(la_text) == GLAT_END);

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/** Prints active gamelog */

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void GamelogPrint(GamelogPrintProc *proc)

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{

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	char buf[GAMELOG_BUF_LEN];

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   210

	proc("---- gamelog start ----");

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   212

	const LoggedAction *laend = &_gamelog_action[_gamelog_actions];

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   214

	for (const LoggedAction *la = _gamelog_action; la != laend; la++) {

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		assert((uint)la->at < GLAT_END);

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   217

		snprintf(buf, GAMELOG_BUF_LEN, "Tick %u: %s", (uint)la->tick, la_text[(uint)la->at]);

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		proc(buf);

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   220

		const LoggedChange *lcend = &la->change[la->changes];

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   222

		for (const LoggedChange *lc = la->change; lc != lcend; lc++) {

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			_dbgofs = 0;

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			AddDebugText(buf, "     ");

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   226

			switch (lc->ct) {

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				default: NOT_REACHED();

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				case GLCT_MODE:

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					AddDebugText(buf, "New game mode: %u landscape: %u",

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						(uint)lc->mode.mode, (uint)lc->mode.landscape);

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					break;

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				case GLCT_REVISION:

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					AddDebugText(buf, "Revision text changed to %s, savegame version %u, ",

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						lc->revision.text, lc->revision.slver);

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					switch (lc->revision.modified) {

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						case 0: AddDebugText(buf, "not "); break;

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						case 1: AddDebugText(buf, "maybe "); break;

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						default: break;

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					}

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					AddDebugText(buf, "modified, _openttd_newgrf_version = 0x%08x", lc->revision.newgrf);

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					break;

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   246

				case GLCT_OLDVER:

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					AddDebugText(buf, "Conversion from ");

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					switch (lc->oldver.type) {

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						default: NOT_REACHED();

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						case SGT_OTTD:

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							AddDebugText(buf, "OTTD savegame without gamelog: version %u, %u",

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								GB(lc->oldver.version, 8, 16), GB(lc->oldver.version, 0, 8));

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							break;

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   255

						case SGT_TTD:

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							AddDebugText(buf, "TTD savegame");

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							break;

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   259

						case SGT_TTDP1:

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						case SGT_TTDP2:

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							AddDebugText(buf, "TTDP savegame, %s format",

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								lc->oldver.type == SGT_TTDP1 ? "old" : "new");

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							if (lc->oldver.version != 0) {

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								AddDebugText(buf, ", TTDP version %u.%u.%u.%u",

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									GB(lc->oldver.version, 24, 8), GB(lc->oldver.version, 20, 4),

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									GB(lc->oldver.version, 16, 4), GB(lc->oldver.version, 0, 16));

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							}

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							break;

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					}

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					break;

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   272

				case GLCT_PATCH:

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					AddDebugText(buf, "Patch setting changed: %s : %d -> %d", lc->patch.name, lc->patch.oldval, lc->patch.newval);

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					break;

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   276

				case GLCT_GRFADD:

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					AddDebugText(buf, "Added NewGRF: ");

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					PrintGrfInfo(buf, lc->grfadd.grfid, lc->grfadd.md5sum);

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					break;

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   281

				case GLCT_GRFREM:

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					AddDebugText(buf, "Removed NewGRF: %08X", BSWAP32(lc->grfrem.grfid));

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					PrintGrfFilename(buf, lc->grfrem.grfid);

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					break;

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   286

				case GLCT_GRFCOMPAT:

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					AddDebugText(buf, "Compatible NewGRF loaded: ");

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					PrintGrfInfo(buf, lc->grfcompat.grfid, lc->grfcompat.md5sum);

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					break;

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				case GLCT_GRFPARAM:

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					AddDebugText(buf, "GRF parameter changed: %08X", BSWAP32(lc->grfparam.grfid));

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					PrintGrfFilename(buf, lc->grfparam.grfid);

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					break;

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				case GLCT_GRFMOVE:

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					AddDebugText(buf, "GRF order changed: %08X moved %d places %s",

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						BSWAP32(lc->grfmove.grfid), abs(lc->grfmove.offset), lc->grfmove.offset >= 0 ? "down" : "up" );

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					PrintGrfFilename(buf, lc->grfmove.grfid);

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					break;

   301

			}

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   303

			proc(buf);

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		}

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	}

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   307

	proc("---- gamelog end ----");

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}

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   310

   311

static void GamelogPrintConsoleProc(const char *s)

   312

{

   313

	IConsolePrint(CC_WARNING, s);

   314

}

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   316

void GamelogPrintConsole()

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{

   318

	GamelogPrint(&GamelogPrintConsoleProc);

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}

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   321

   322

static void GamelogPrintDebugProc(const char *s)

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{

   324

	debug_print("gamelog", s);

   325

}

   326

   327

void GamelogPrintDebug()

   328

{

   329

	GamelogPrint(&GamelogPrintDebugProc);

   330

}

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   332

   333

/** Allocates new LoggedChange and new LoggedAction if needed.

   334

 * If there is no action active, NULL is returned.

   335

 * @param ct type of change

   336

 * @return new LoggedChange, or NULL if there is no action active

   337

 */

   338

static LoggedChange *GamelogChange(GamelogChangeType ct)

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{

   340

	if (_current_action == NULL) {

   341

		if (_gamelog_action_type == GLAT_NONE) return NULL;

   342

   343

		_gamelog_action  = ReallocT(_gamelog_action, _gamelog_actions + 1);

   344

		_current_action  = &_gamelog_action[_gamelog_actions++];

   345

   346

		_current_action->at      = _gamelog_action_type;

   347

		_current_action->tick    = _tick_counter;

   348

		_current_action->change  = NULL;

   349

		_current_action->changes = 0;

   350

	}

   351

   352

	_current_action->change = ReallocT(_current_action->change, _current_action->changes + 1);

   353

   354

	LoggedChange *lc = &_current_action->change[_current_action->changes++];

   355

	lc->ct = ct;

   356

   357

	return lc;

   358

}

   359

   360

   361

/** Logs a change in game revision

   362

 * @param revision new revision string

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 */

   364

void GamelogRevision()

   365

{

   366

	assert(_gamelog_action_type == GLAT_START || _gamelog_action_type == GLAT_LOAD);

   367

   368

	LoggedChange *lc = GamelogChange(GLCT_REVISION);

   369

	if (lc == NULL) return;

   370

   371

	strncpy(lc->revision.text, _openttd_revision, lengthof(lc->revision.text));

   372

	lc->revision.slver = SAVEGAME_VERSION;

   373

	lc->revision.modified = _openttd_revision_modified;

   374

	lc->revision.newgrf = _openttd_newgrf_version;

   375

}

   376

   377

/** Logs a change in game mode (scenario editor or game)

   378

 */

   379

void GamelogMode()

   380

{

   381

	assert(_gamelog_action_type == GLAT_START || _gamelog_action_type == GLAT_LOAD || _gamelog_action_type == GLAT_CHEAT);

   382

   383

	LoggedChange *lc = GamelogChange(GLCT_MODE);

   384

	if (lc == NULL) return;

   385

   386

	lc->mode.mode      = _game_mode;

   387

	lc->mode.landscape = _settings_game.game_creation.landscape;

   388

}

   389

   390

/** Logs loading from savegame without gamelog

   391

 */

   392

void GamelogOldver()

   393

{

   394

	assert(_gamelog_action_type == GLAT_LOAD);

   395

   396

	LoggedChange *lc = GamelogChange(GLCT_OLDVER);

   397

	if (lc == NULL) return;

   398

   399

	lc->oldver.type = _savegame_type;

   400

	lc->oldver.version = (_savegame_type == SGT_OTTD ? ((uint32)_sl_version << 8 | _sl_minor_version) : _ttdp_version);

   401

}

   402

   403

/** Logs change in game patches. Only non-networksafe patches are logged

   404

 * @param name patch name

   405

 * @param oldval old patch value

   406

 * @param newval new patch value

   407

 */

   408

void GamelogPatch(const char *name, int32 oldval, int32 newval)

   409

{

   410

	assert(_gamelog_action_type == GLAT_PATCH);

   411

   412

	LoggedChange *lc = GamelogChange(GLCT_PATCH);

   413

	if (lc == NULL) return;

   414

   415

	lc->patch.name = strdup(name);

   416

	lc->patch.oldval = oldval;

   417

	lc->patch.newval = newval;

   418

}

   419

   420

   421

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

   422

 * Appends GLCT_REVISION when the revision string changed

   423

 */

   424

void GamelogTestRevision()

   425

{

   426

	const LoggedChange *rev = NULL;

   427

   428

	const LoggedAction *laend = &_gamelog_action[_gamelog_actions];

   429

	for (const LoggedAction *la = _gamelog_action; la != laend; la++) {

   430

		const LoggedChange *lcend = &la->change[la->changes];

   431

		for (const LoggedChange *lc = la->change; lc != lcend; lc++) {

   432

			if (lc->ct == GLCT_REVISION) rev = lc;

   433

		}

   434

	}

   435

   436

	if (rev == NULL || strcmp(rev->revision.text, _openttd_revision) != 0 ||

   437

			rev->revision.modified != _openttd_revision_modified ||

   438

			rev->revision.newgrf != _openttd_newgrf_version) {

   439

		GamelogRevision();

   440

	}

   441

}

   442

   443

/** Finds last stored game mode or landscape.

   444

 * Any change is logged

   445

 */

   446

void GamelogTestMode()

   447

{

   448

	const LoggedChange *mode = NULL;

   449

   450

	const LoggedAction *laend = &_gamelog_action[_gamelog_actions];

   451

	for (const LoggedAction *la = _gamelog_action; la != laend; la++) {

   452

		const LoggedChange *lcend = &la->change[la->changes];

   453

		for (const LoggedChange *lc = la->change; lc != lcend; lc++) {

   454

			if (lc->ct == GLCT_MODE) mode = lc;

   455

		}

   456

	}

   457

   458

	if (mode == NULL || mode->mode.mode != _game_mode || mode->mode.landscape != _settings_game.game_creation.landscape) GamelogMode();

   459

}

   460

   461

   462

/** Decides if GRF should be logged

   463

 * @param g grf to determine

   464

 * @return true iff GRF is not static and is loaded

   465

 */

   466

static inline bool IsLoggableGrfConfig(const GRFConfig *g)

   467

{

   468

	return !HasBit(g->flags, GCF_STATIC) && g->status != GCS_NOT_FOUND;

   469

}

   470

   471

/** Logs removal of a GRF

   472

 * @param grfid ID of removed GRF

   473

 */

   474

void GamelogGRFRemove(uint32 grfid)

   475

{

   476

	assert(_gamelog_action_type == GLAT_LOAD || _gamelog_action_type == GLAT_GRF);

   477

   478

	LoggedChange *lc = GamelogChange(GLCT_GRFREM);

   479

	if (lc == NULL) return;

   480

   481

	lc->grfrem.grfid = grfid;

   482

}

   483

   484

/** Logs adding of a GRF

   485

 * @param newg added GRF

   486

 */

   487

void GamelogGRFAdd(const GRFConfig *newg)

   488

{

   489

	assert(_gamelog_action_type == GLAT_LOAD || _gamelog_action_type == GLAT_START || _gamelog_action_type == GLAT_GRF);

   490

   491

	if (!IsLoggableGrfConfig(newg)) return;

   492

   493

	LoggedChange *lc = GamelogChange(GLCT_GRFADD);

   494

	if (lc == NULL) return;

   495

   496

	memcpy(&lc->grfadd, newg, sizeof(GRFIdentifier));

   497

}

   498

   499

/** Logs loading compatible GRF

   500

 * (the same ID, but different MD5 hash)

   501

 * @param newg new (updated) GRF

   502

 */

   503

void GamelogGRFCompatible(const GRFIdentifier *newg)

   504

{

   505

	assert(_gamelog_action_type == GLAT_LOAD);

   506

   507

	LoggedChange *lc = GamelogChange(GLCT_GRFCOMPAT);

   508

	if (lc == NULL) return;

   509

   510

	memcpy(&lc->grfcompat, newg, sizeof(GRFIdentifier));

   511

}

   512

   513

/** Logs changing GRF order

   514

 * @param grfid GRF that is moved

   515

 * @param offset how far it is moved, positive = moved down

   516

 */

   517

static void GamelogGRFMove(uint32 grfid, int32 offset)

   518

{

   519

	assert(_gamelog_action_type == GLAT_GRF);

   520

   521

	LoggedChange *lc = GamelogChange(GLCT_GRFMOVE);

   522

	if (lc == NULL) return;

   523

   524

	lc->grfmove.grfid  = grfid;

   525

	lc->grfmove.offset = offset;

   526

}

   527

   528

/** Logs change in GRF parameters.

   529

 * Details about parameters changed are not stored

   530