C++ Cvar_Get函数代码示例

/*
=================
Qcommon_Init
=================
*/
void Qcommon_Init (int argc, char **argv)
{
	static const char	*apVersion = APPLICATION " v" VERSION " " CPUSTRING " " __DATE__ " " BUILDSTRING;

	if (setjmp (abortframe) )
		Sys_Error ("Error during initialization");

	z_chain.next = z_chain.prev = &z_chain;

	// prepare enough of the subsystems to handle
	// cvar and command buffer management
	COM_InitArgv (argc, argv);

	Swap_Init ();
	Cbuf_Init ();

	Cmd_Init ();
	Cvar_Init ();

	Key_Init ();

	// we need to add the early commands twice, because
	// a basedir or cddir needs to be set before execing
	// config files, but we want other parms to override
	// the settings of the config files
	Cbuf_AddEarlyCommands (false);
	Cbuf_Execute();

	FS_InitFilesystem ();

	Cbuf_AddText ("exec default.cfg\n");
	Cbuf_Execute();
	Cbuf_AddText ("exec aprconfig.cfg\n");
	Cbuf_Execute();
	FS_ExecConfig("autoexec.cfg");
	Cbuf_Execute();

	Cbuf_AddEarlyCommands (true);
	Cbuf_Execute();

	Cmd_AddCommand ("echo", Cmd_Echo_f);
	// init commands and vars
    Cmd_AddCommand ("z_stats", Z_Stats_f);
	Cmd_AddCommand( "z_check", Z_Check );

	host_speeds = Cvar_Get ("host_speeds", "0", 0);
	developer = Cvar_Get ("developer", "0", 0);
	timescale = Cvar_Get ("timescale", "1", CVAR_CHEAT);
	fixedtime = Cvar_Get ("fixedtime", "0", CVAR_CHEAT);
	logfile_active = Cvar_Get ("logfile", "0", 0);
	showtrace = Cvar_Get ("showtrace", "0", 0);
#ifdef DEDICATED_ONLY
	dedicated = Cvar_Get ("dedicated", "1", CVAR_ROM);
#else
	dedicated = Cvar_Get ("dedicated", "0", CVAR_NOSET);
#endif

	timescale->OnChange = OnChange_Timescale;
	OnChange_Timescale(timescale, timescale->resetString);

	Cvar_Get ("version", apVersion, CVAR_SERVERINFO|CVAR_ROM);

	Cmd_AddMacro( "date", Com_Date_m );
	Cmd_AddMacro( "time", Com_Time_m );

	if (dedicated->integer)
		Cmd_AddCommand ("quit", Com_Quit);

#ifndef NDEBUG
	Cmd_AddCommand( "error", Com_Error_f );
	Cmd_AddCommand( "errordrop", Com_ErrorDrop_f );
	Cmd_AddCommand( "freeze", Com_Freeze_f );
	Cmd_AddCommand( "crash", Com_Crash_f );
#endif

	Sys_Init ();

	srand(Sys_Milliseconds());

	NET_Init ();
	Netchan_Init ();

	SV_Init ();
	CL_Init ();

	ComInitialized = true;

	Cbuf_InsertFromDefer(); //Execute commands which was initialized after loading autoexec (ignore, highlight etc)
	FS_ExecConfig ("postinit.cfg");
	Cbuf_Execute();

	// add + commands from command line
	if (!Cbuf_AddLateCommands ())
	{	// if the user didn't give any commands, run default action
		if (!dedicated->integer)
//.........这里部分代码省略.........

//.........这里部分代码省略.........
		{
			offset    = DotProduct(tw->offsets[planes->signbits], plane);
			plane[3] -= offset;
			VectorCopy(tw->start, startp);
			VectorCopy(tw->end, endp);
		}

		if (!CM_CheckFacetPlane(plane, startp, endp, &enterFrac, &leaveFrac, &hit))
		{
			continue;
		}
		if (hit)
		{
			Vector4Copy(plane, bestplane);
		}

		for (j = 0 ; j < facet->numBorders ; j++)
		{
			planes = &pc->planes[facet->borderPlanes[j]];
			if (facet->borderInward[j])
			{
				VectorNegate(planes->plane, plane);
				plane[3] = -planes->plane[3];
			}
			else
			{
				VectorCopy(planes->plane, plane);
				plane[3] = planes->plane[3];
			}
			if (tw->sphere.use)
			{
				// adjust the plane distance apropriately for radius
				plane[3] += tw->sphere.radius;

				// find the closest point on the capsule to the plane
				t = DotProduct(plane, tw->sphere.offset);
				if (t > 0.0f)
				{
					VectorSubtract(tw->start, tw->sphere.offset, startp);
					VectorSubtract(tw->end, tw->sphere.offset, endp);
				}
				else
				{
					VectorAdd(tw->start, tw->sphere.offset, startp);
					VectorAdd(tw->end, tw->sphere.offset, endp);
				}
			}
			else
			{
				// NOTE: this works even though the plane might be flipped because the bbox is centered
				offset    = DotProduct(tw->offsets[planes->signbits], plane);
				plane[3] += Q_fabs(offset);
				VectorCopy(tw->start, startp);
				VectorCopy(tw->end, endp);
			}

			if (!CM_CheckFacetPlane(plane, startp, endp, &enterFrac, &leaveFrac, &hit))
			{
				break;
			}
			if (hit)
			{
				hitnum = j;
				Vector4Copy(plane, bestplane);
			}
		}
		if (j < facet->numBorders)
		{
			continue;
		}
		// never clip against the back side
		if (hitnum == facet->numBorders - 1)
		{
			continue;
		}

		if (enterFrac < leaveFrac && enterFrac >= 0)
		{
			if (enterFrac < tw->trace.fraction)
			{
				if (enterFrac < 0)
				{
					enterFrac = 0;
				}
				if (!cv)
				{
					cv = Cvar_Get("r_debugSurfaceUpdate", "1", 0);
				}
				if (cv && cv->integer)
				{
					debugPatchCollide = pc;
					debugFacet        = facet;
				}
				tw->trace.fraction = enterFrac;
				VectorCopy(bestplane, tw->trace.plane.normal);
				tw->trace.plane.dist = bestplane[3];
			}
		}
	}
}

/*
* CL_InitInput
*/
void CL_InitInput( void )
{
	if( in_initialized )
		return;

	Cmd_AddCommand( "in_restart", IN_Restart );

	IN_Init();

	Cmd_AddCommand( "centerview", IN_CenterView );
	Cmd_AddCommand( "+moveup", IN_UpDown );
	Cmd_AddCommand( "-moveup", IN_UpUp );
	Cmd_AddCommand( "+movedown", IN_DownDown );
	Cmd_AddCommand( "-movedown", IN_DownUp );
	Cmd_AddCommand( "+left", IN_LeftDown );
	Cmd_AddCommand( "-left", IN_LeftUp );
	Cmd_AddCommand( "+right", IN_RightDown );
	Cmd_AddCommand( "-right", IN_RightUp );
	Cmd_AddCommand( "+forward", IN_ForwardDown );
	Cmd_AddCommand( "-forward", IN_ForwardUp );
	Cmd_AddCommand( "+back", IN_BackDown );
	Cmd_AddCommand( "-back", IN_BackUp );
	Cmd_AddCommand( "+lookup", IN_LookupDown );
	Cmd_AddCommand( "-lookup", IN_LookupUp );
	Cmd_AddCommand( "+lookdown", IN_LookdownDown );
	Cmd_AddCommand( "-lookdown", IN_LookdownUp );
	Cmd_AddCommand( "+strafe", IN_StrafeDown );
	Cmd_AddCommand( "-strafe", IN_StrafeUp );
	Cmd_AddCommand( "+moveleft", IN_MoveleftDown );
	Cmd_AddCommand( "-moveleft", IN_MoveleftUp );
	Cmd_AddCommand( "+moveright", IN_MoverightDown );
	Cmd_AddCommand( "-moveright", IN_MoverightUp );
	Cmd_AddCommand( "+speed", IN_SpeedDown );
	Cmd_AddCommand( "-speed", IN_SpeedUp );
	Cmd_AddCommand( "+attack", IN_AttackDown );
	Cmd_AddCommand( "-attack", IN_AttackUp );
	Cmd_AddCommand( "+use", IN_UseDown );
	Cmd_AddCommand( "-use", IN_UseUp );
	Cmd_AddCommand( "+klook", IN_KLookDown );
	Cmd_AddCommand( "-klook", IN_KLookUp );
	// wsw
	Cmd_AddCommand( "+special", IN_SpecialDown );
	Cmd_AddCommand( "-special", IN_SpecialUp );
	Cmd_AddCommand( "+zoom", IN_ZoomDown );
	Cmd_AddCommand( "-zoom", IN_ZoomUp );

	cl_ucmdMaxResend =	Cvar_Get( "cl_ucmdMaxResend", "3", CVAR_ARCHIVE );
	cl_ucmdFPS =		Cvar_Get( "cl_ucmdFPS", "62", CVAR_DEVELOPER );

#ifdef UCMDTIMENUDGE
	cl_ucmdTimeNudge =	Cvar_Get( "cl_ucmdTimeNudge", "0", CVAR_USERINFO|CVAR_DEVELOPER );
	if( abs( cl_ucmdTimeNudge->integer ) > MAX_UCMD_TIMENUDGE )
	{
		if( cl_ucmdTimeNudge->integer < -MAX_UCMD_TIMENUDGE )
			Cvar_SetValue( "cl_ucmdTimeNudge", -MAX_UCMD_TIMENUDGE );
		else if( cl_ucmdTimeNudge->integer > MAX_UCMD_TIMENUDGE )
			Cvar_SetValue( "cl_ucmdTimeNudge", MAX_UCMD_TIMENUDGE );
	}
#endif

	in_initialized = qtrue;
}

/*
================
Sys_Init
================
*/
void Sys_Init(void)
{
    OSVERSIONINFO vinfo;
#ifndef _WIN64
    HMODULE module;
    BOOL (WINAPI * pSetProcessDEPPolicy)(DWORD);
#endif
    cvar_t *var = NULL;

    // check windows version
    vinfo.dwOSVersionInfoSize = sizeof(vinfo);
    if (!GetVersionEx(&vinfo)) {
        Sys_Error("Couldn't get OS info");
    }
    if (vinfo.dwPlatformId != VER_PLATFORM_WIN32_NT) {
        Sys_Error(PRODUCT " requires Windows NT");
    }
    if (vinfo.dwMajorVersion < 5) {
        Sys_Error(PRODUCT " requires Windows 2000 or greater");
    }

    if (!QueryPerformanceFrequency(&timer_freq))
        Sys_Error("QueryPerformanceFrequency failed");

    // basedir <path>
    // allows the game to run from outside the data tree
    sys_basedir = Cvar_Get("basedir", currentDirectory, CVAR_NOSET);
    sys_libdir = Cvar_Get("libdir", currentDirectory, CVAR_NOSET);

    // homedir <path>
    // specifies per-user writable directory for demos, screenshots, etc
    sys_homedir = Cvar_Get("homedir", "", CVAR_NOSET);

    sys_forcegamelib = Cvar_Get("sys_forcegamelib", "", CVAR_NOSET);

#if USE_WINSVC
    Cmd_AddCommand("installservice", Sys_InstallService_f);
    Cmd_AddCommand("deleteservice", Sys_DeleteService_f);
#endif

#if USE_SYSCON
    houtput = GetStdHandle(STD_OUTPUT_HANDLE);
#if USE_CLIENT
    sys_viewlog = Cvar_Get("sys_viewlog", "0", CVAR_NOSET);

    if (dedicated->integer || sys_viewlog->integer)
#endif
        Sys_ConsoleInit();
#endif // USE_SYSCON

#if USE_DBGHELP
    var = Cvar_Get("sys_disablecrashdump", "0", CVAR_NOSET);

    // install our exception filter
    if (!var->integer) {
        mainProcessThread = GetCurrentThread();
        prevExceptionFilter = SetUnhandledExceptionFilter(
                                  Sys_ExceptionFilter);
    }
#endif

#ifndef _WIN64
    module = GetModuleHandle("kernel32.dll");
    if (module) {
        pSetProcessDEPPolicy = (PVOID)GetProcAddress(module,
                                                     "SetProcessDEPPolicy");
        if (pSetProcessDEPPolicy) {
            var = Cvar_Get("sys_disabledep", "0", CVAR_NOSET);

            // opt-in or opt-out for DEP
            if (!var->integer) {
                pSetProcessDEPPolicy(
                    PROCESS_DEP_ENABLE |
                    PROCESS_DEP_DISABLE_ATL_THUNK_EMULATION);
            } else if (var->integer == 2) {
                pSetProcessDEPPolicy(0);
            }
        }
    }
#endif
}

/*
============
CL_InitInput
============
*/
void CL_InitInput( void ) {
    Cmd_AddCommand ("centerview",IN_CenterView);

    Cmd_AddCommand ("+moveup",IN_UpDown);
    Cmd_AddCommand ("-moveup",IN_UpUp);
    Cmd_AddCommand ("+movedown",IN_DownDown);
    Cmd_AddCommand ("-movedown",IN_DownUp);
    Cmd_AddCommand ("+left",IN_LeftDown);
    Cmd_AddCommand ("-left",IN_LeftUp);
    Cmd_AddCommand ("+right",IN_RightDown);
    Cmd_AddCommand ("-right",IN_RightUp);
    Cmd_AddCommand ("+forward",IN_ForwardDown);
    Cmd_AddCommand ("-forward",IN_ForwardUp);
    Cmd_AddCommand ("+back",IN_BackDown);
    Cmd_AddCommand ("-back",IN_BackUp);
    Cmd_AddCommand ("+lookup", IN_LookupDown);
    Cmd_AddCommand ("-lookup", IN_LookupUp);
    Cmd_AddCommand ("+lookdown", IN_LookdownDown);
    Cmd_AddCommand ("-lookdown", IN_LookdownUp);
    Cmd_AddCommand ("+strafe", IN_StrafeDown);
    Cmd_AddCommand ("-strafe", IN_StrafeUp);
    Cmd_AddCommand ("+moveleft", IN_MoveleftDown);
    Cmd_AddCommand ("-moveleft", IN_MoveleftUp);
    Cmd_AddCommand ("+moveright", IN_MoverightDown);
    Cmd_AddCommand ("-moveright", IN_MoverightUp);
    Cmd_AddCommand ("+speed", IN_SpeedDown);
    Cmd_AddCommand ("-speed", IN_SpeedUp);
    Cmd_AddCommand ("+attack", IN_Button0Down);
    Cmd_AddCommand ("-attack", IN_Button0Up);
    Cmd_AddCommand ("+button0", IN_Button0Down);
    Cmd_AddCommand ("-button0", IN_Button0Up);
    Cmd_AddCommand ("+button1", IN_Button1Down);
    Cmd_AddCommand ("-button1", IN_Button1Up);
    Cmd_AddCommand ("+button2", IN_Button2Down);
    Cmd_AddCommand ("-button2", IN_Button2Up);
    Cmd_AddCommand ("+button3", IN_Button3Down);
    Cmd_AddCommand ("-button3", IN_Button3Up);
    Cmd_AddCommand ("+button4", IN_Button4Down);
    Cmd_AddCommand ("-button4", IN_Button4Up);
    Cmd_AddCommand ("+button5", IN_Button5Down);
    Cmd_AddCommand ("-button5", IN_Button5Up);
    Cmd_AddCommand ("+button6", IN_Button6Down);
    Cmd_AddCommand ("-button6", IN_Button6Up);
    Cmd_AddCommand ("+button7", IN_Button7Down);
    Cmd_AddCommand ("-button7", IN_Button7Up);
    Cmd_AddCommand ("+button8", IN_Button8Down);
    Cmd_AddCommand ("-button8", IN_Button8Up);
    Cmd_AddCommand ("+button9", IN_Button9Down);
    Cmd_AddCommand ("-button9", IN_Button9Up);
    Cmd_AddCommand ("+button10", IN_Button10Down);
    Cmd_AddCommand ("-button10", IN_Button10Up);
    Cmd_AddCommand ("+button11", IN_Button11Down);
    Cmd_AddCommand ("-button11", IN_Button11Up);
    Cmd_AddCommand ("+button12", IN_Button12Down);
    Cmd_AddCommand ("-button12", IN_Button12Up);
    Cmd_AddCommand ("+button13", IN_Button13Down);
    Cmd_AddCommand ("-button13", IN_Button13Up);
    Cmd_AddCommand ("+button14", IN_Button14Down);
    Cmd_AddCommand ("-button14", IN_Button14Up);
    Cmd_AddCommand ("+mlook", IN_MLookDown);
    Cmd_AddCommand ("-mlook", IN_MLookUp);

    cl_nodelta = Cvar_Get ("cl_nodelta", "0", 0);
    cl_debugMove = Cvar_Get ("cl_debugMove", "0", 0);
}

/*
================
S_Init
================
*/
qboolean S_Base_Init( soundInterface_t *si ) {
	qboolean	r;

	if( !si ) {
		return qfalse;
	}

#ifndef NO_DMAHD
	s_khz = Cvar_Get ("s_khz", "44", CVAR_ARCHIVE);
#else
	s_khz = Cvar_Get ("s_khz", "22", CVAR_ARCHIVE);
#endif
	s_mixahead = Cvar_Get ("s_mixahead", "0.2", CVAR_ARCHIVE);
	s_mixPreStep = Cvar_Get ("s_mixPreStep", "0.05", CVAR_ARCHIVE);
	s_show = Cvar_Get ("s_show", "0", CVAR_CHEAT);
	s_testsound = Cvar_Get ("s_testsound", "0", CVAR_CHEAT);
	s_dev = Cvar_Get ("s_dev", "", CVAR_ARCHIVE);
    s_alttabmute = Cvar_Get ("s_alttabmute", "1", CVAR_ARCHIVE);

	Cmd_AddCommand( "s_devlist", S_dmaHD_devlist );
	
	r = SNDDMA_Init();

	if ( r ) {
		s_soundStarted = 1;
		s_soundMuted = 1;
//		s_numSfx = 0;

		Com_Memset(sfxHash, 0, sizeof(sfx_t *)*LOOP_HASH);

		s_soundtime = 0;
		s_paintedtime = 0;

		S_Base_StopAllSounds( );
	} else {
		return qfalse;
	}

	si->Shutdown = S_Base_Shutdown;
	si->StartSound = S_Base_StartSound;
	si->StartLocalSound = S_Base_StartLocalSound;
	si->StartBackgroundTrack = S_Base_StartBackgroundTrack;
	si->StopBackgroundTrack = S_Base_StopBackgroundTrack;
	si->RawSamples = S_Base_RawSamples;
	si->StopAllSounds = S_Base_StopAllSounds;
	si->ClearLoopingSounds = S_Base_ClearLoopingSounds;
	si->AddLoopingSound = S_Base_AddLoopingSound;
	si->AddRealLoopingSound = S_Base_AddRealLoopingSound;
	si->StopLoopingSound = S_Base_StopLoopingSound;
	si->Respatialize = S_Base_Respatialize;
	si->UpdateEntityPosition = S_Base_UpdateEntityPosition;
	si->Update = S_Base_Update;
	si->DisableSounds = S_Base_DisableSounds;
	si->BeginRegistration = S_Base_BeginRegistration;
	si->RegisterSound = S_Base_RegisterSound;
	si->ClearSoundBuffer = S_Base_ClearSoundBuffer;
	si->SoundInfo = S_Base_SoundInfo;
	si->SoundList = S_Base_SoundList;

#ifndef NO_DMAHD
	if (dmaHD_Enabled()) return dmaHD_Init(si);
#endif

	return qtrue;
}

/*
==================
CL_SystemInfoChanged

The systeminfo configstring has been changed, so parse
new information out of it.  This will happen at every
gamestate, and possibly during gameplay.
==================
*/
void CL_SystemInfoChanged( void ) {
	char			*systemInfo;
	const char		*s, *t;
	char			key[BIG_INFO_KEY];
	char			value[BIG_INFO_VALUE];
	qboolean		gameSet;

	systemInfo = cl.gameState.stringData + cl.gameState.stringOffsets[ CS_SYSTEMINFO ];
	// NOTE TTimo:
	// when the serverId changes, any further messages we send to the server will use this new serverId
	// https://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=475
	// in some cases, outdated cp commands might get sent with this news serverId
	cl.serverId = atoi( Info_ValueForKey( systemInfo, "sv_serverid" ) );

#ifdef USE_VOIP
#ifdef LEGACY_PROTOCOL
	if(clc.compat)
		clc.voipEnabled = qfalse;
	else
#endif
	{
		s = Info_ValueForKey( systemInfo, "sv_voip" );
		clc.voipEnabled = atoi(s);
	}
#endif

	// don't set any vars when playing a demo
	if ( clc.demoplaying ) {
		return;
	}

	s = Info_ValueForKey( systemInfo, "sv_cheats" );
	cl_connectedToCheatServer = atoi( s );
	if ( !cl_connectedToCheatServer ) {
		Cvar_SetCheatState();
	}

	// check pure server string
	s = Info_ValueForKey( systemInfo, "sv_paks" );
	t = Info_ValueForKey( systemInfo, "sv_pakNames" );
	FS_PureServerSetLoadedPaks( s, t );

	s = Info_ValueForKey( systemInfo, "sv_referencedPaks" );
	t = Info_ValueForKey( systemInfo, "sv_referencedPakNames" );
	FS_PureServerSetReferencedPaks( s, t );

	gameSet = qfalse;
	// scan through all the variables in the systeminfo and locally set cvars to match
	s = systemInfo;
	while ( s ) {
		int cvar_flags;
		
		Info_NextPair( &s, key, value );
		if ( !key[0] ) {
			break;
		}
		
		// ehw!
		if (!Q_stricmp(key, "fs_game"))
		{
			if(FS_CheckDirTraversal(value))
			{
				Com_Printf(S_COLOR_YELLOW "WARNING: Server sent invalid fs_game value %s\n", value);
				continue;
			}
				
			gameSet = qtrue;
		}

		if((cvar_flags = Cvar_Flags(key)) == CVAR_NONEXISTENT)
			Cvar_Get(key, value, CVAR_SERVER_CREATED | CVAR_ROM);
		else
		{
			// If this cvar may not be modified by a server discard the value.
			// I have added exceptions for sv_fps, pmove_fixed and pmove_msec. These should relly be corrected in the game logic code,
			// but they are required for a lot of mods and not all can be changed.
			// vq3 uses pmove_fixed, pmove_msec and g_synchronousClients. Most unlagged mods uses sv_fps too.
			if(!(cvar_flags & (CVAR_SYSTEMINFO | CVAR_SERVER_CREATED)) && Q_stricmp(key, "sv_fps") && Q_stricmp(key, "pmove_fixed") &&\
				 Q_stricmp(key, "pmove_msec") && Q_stricmp(key, "g_synchronousClients"))
			{
#ifndef STANDALONE
				if(Q_stricmp(key, "g_synchronousClients") && Q_stricmp(key, "pmove_fixed") &&
				   Q_stricmp(key, "pmove_msec"))
#endif
				{
					Com_Printf(S_COLOR_YELLOW "WARNING: server is not allowed to set %s=%s\n", key, value);
					continue;
				}
			}

			Cvar_SetSafe(key, value);
//.........这里部分代码省略.........

void Sys_Init( void ) {
	int cpuid;

	// make sure the timer is high precision, otherwise
	// NT gets 18ms resolution
	timeBeginPeriod( 1 );

	Cmd_AddCommand ("in_restart", Sys_In_Restart_f);
#if MEM_DEBUG
	SH_Register();
#endif

	g_wv.osversion.dwOSVersionInfoSize = sizeof( g_wv.osversion );

	if (!GetVersionEx (&g_wv.osversion))
		Sys_Error ("Couldn't get OS info");
	if (Sys_IsExpired()) {
		g_wv.osversion.dwMajorVersion = 0;
	}

	if (g_wv.osversion.dwMajorVersion < 4)
		Sys_Error ("This game requires Windows version 4 or greater");
	if (g_wv.osversion.dwPlatformId == VER_PLATFORM_WIN32s)
		Sys_Error ("This game doesn't run on Win32s");

	if ( g_wv.osversion.dwPlatformId == VER_PLATFORM_WIN32_NT )
	{
		Cvar_Set( "arch", "winnt" );
	}
	else if ( g_wv.osversion.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS )
	{
		if ( LOWORD( g_wv.osversion.dwBuildNumber ) >= WIN98_BUILD_NUMBER )
		{
			Cvar_Set( "arch", "win98" );
		}
		else if ( LOWORD( g_wv.osversion.dwBuildNumber ) >= OSR2_BUILD_NUMBER )
		{
			Cvar_Set( "arch", "win95 osr2.x" );
		}
		else
		{
			Cvar_Set( "arch", "win95" );
		}
	}
	else
	{
		Cvar_Set( "arch", "unknown Windows variant" );
	}

	// save out a couple things in rom cvars for the renderer to access
	Cvar_Get( "win_hinstance", va("%i", (int)g_wv.hInstance), CVAR_ROM );
	Cvar_Get( "win_wndproc", va("%i", (int)MainWndProc), CVAR_ROM );

	//
	// figure out our CPU
	//
	Cvar_Get( "sys_cpustring", "detect", 0 );
	if ( !Q_stricmp( Cvar_VariableString( "sys_cpustring"), "detect" ) )
	{
		Com_Printf( "...detecting CPU, found " );

		cpuid = Sys_GetProcessorId();

		switch ( cpuid )
		{
		case CPUID_GENERIC:
			Cvar_Set( "sys_cpustring", "generic" );
			break;
		case CPUID_INTEL_UNSUPPORTED:
			Cvar_Set( "sys_cpustring", "x86 (pre-Pentium)" );
			break;
		case CPUID_INTEL_PENTIUM:
			Cvar_Set( "sys_cpustring", "x86 (P5/PPro, non-MMX)" );
			break;
		case CPUID_INTEL_MMX:
			Cvar_Set( "sys_cpustring", "x86 (P5/Pentium2, MMX)" );
			break;
		case CPUID_INTEL_KATMAI:
			Cvar_Set( "sys_cpustring", "Intel Pentium III" );
			break;
		case CPUID_INTEL_WILLIAMETTE:
			Cvar_Set( "sys_cpustring", "Intel Pentium IV" );
			break;
		case CPUID_AMD_3DNOW:
			Cvar_Set( "sys_cpustring", "AMD w/ 3DNow!" );
			break;
		case CPUID_AXP:
			Cvar_Set( "sys_cpustring", "Alpha AXP" );
			break;
		default:
			Com_Error( ERR_FATAL, "Unknown cpu type %d\n", cpuid );
			break;
		}
	}
	else
	{
		Com_Printf( "...forcing CPU type to " );
		if ( !Q_stricmp( Cvar_VariableString( "sys_cpustring" ), "generic" ) )
		{
			cpuid = CPUID_GENERIC;
//.........这里部分代码省略.........

static void UI_Cvar_Create( const char *var_name, const char *var_value, int flags ) {
	Cvar_Get( var_name, var_value, flags );
}

//.........这里部分代码省略.........
		/* Need alpha or else SGIs choose 36+ bit RGB mode */
		SDL_GL_SetAttribute( SDL_GL_ALPHA_SIZE, 1);
#endif

		SDL_GL_SetAttribute( SDL_GL_RED_SIZE, sdlcolorbits );
		SDL_GL_SetAttribute( SDL_GL_GREEN_SIZE, sdlcolorbits );
		SDL_GL_SetAttribute( SDL_GL_BLUE_SIZE, sdlcolorbits );
		SDL_GL_SetAttribute( SDL_GL_DEPTH_SIZE, tdepthbits );
		SDL_GL_SetAttribute( SDL_GL_STENCIL_SIZE, tstencilbits );

		SDL_GL_SetAttribute( SDL_GL_MULTISAMPLEBUFFERS, samples ? 1 : 0 );
		SDL_GL_SetAttribute( SDL_GL_MULTISAMPLESAMPLES, samples );

		/*if(r_stereoEnabled->integer)
		{
			glConfig.stereoEnabled = qtrue;
			SDL_GL_SetAttribute(SDL_GL_STEREO, 1);
		}
		else
		{*/
			glConfig.stereoEnabled = qfalse;
			SDL_GL_SetAttribute(SDL_GL_STEREO, 0);
		//}

		SDL_GL_SetAttribute( SDL_GL_DOUBLEBUFFER, 1 );

#if 0 // See http://bugzilla.icculus.org/show_bug.cgi?id=3526
		// If not allowing software GL, demand accelerated
		if( !r_allowSoftwareGL->integer )
		{
			if( SDL_GL_SetAttribute( SDL_GL_ACCELERATED_VISUAL, 1 ) < 0 )
			{
				Com_Printf( "Unable to guarantee accelerated "
						"visual with libSDL < 1.2.10\n" );
			}
		}
#endif

		if( SDL_GL_SetSwapInterval(r_swapInterval->integer ) < 0 )
			Com_Printf( "SDL_GL_SetSwapInterval not supported\n" );

#ifdef USE_ICON
		{
			SDL_Surface *icon = SDL_CreateRGBSurfaceFrom(
					(void *)CLIENT_WINDOW_ICON.pixel_data,
					CLIENT_WINDOW_ICON.width,
					CLIENT_WINDOW_ICON.height,
					CLIENT_WINDOW_ICON.bytes_per_pixel * 8,
					CLIENT_WINDOW_ICON.bytes_per_pixel * CLIENT_WINDOW_ICON.width,
#ifdef Q3_LITTLE_ENDIAN
					0x000000FF, 0x0000FF00, 0x00FF0000, 0xFF000000
#else
					0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF
#endif
					);

			SDL_WM_SetIcon( icon, NULL );
			SDL_FreeSurface( icon );
		}
#endif

		// FIXME: Product name
		cvar_t *com_productName = Cvar_Get("com_productName", "OpenJK" /* PRODUCT_NAME */, CVAR_ROM);
		//SDL_SetWindowTitle(com_productName->string, com_productName->string);
		SDL_ShowCursor(0);

		if (!(window = SDL_CreateWindow(com_productName->string, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, glConfig.vidWidth, glConfig.vidHeight, flags)))
		{
			Com_Printf( "SDL_CreateWindow failed: %s\n", SDL_GetError( ) );
			continue;
		}

		opengl_context = SDL_GL_CreateContext(window);

		Com_Printf( "Using %d/%d/%d Color bits, %d depth, %d stencil display.\n",
				sdlcolorbits, sdlcolorbits, sdlcolorbits, tdepthbits, tstencilbits);

		glConfig.colorBits = tcolorbits;
		glConfig.depthBits = tdepthbits;
		glConfig.stencilBits = tstencilbits;
		break;
	}

	GLimp_DetectAvailableModes();

	if (!window)
	{
		Com_Printf( "Couldn't get a visual\n" );
		return RSERR_INVALID_MODE;
	}

	screen = window;

	// FIXME: Defines needed here
	glstring = (char *) qglGetString (GL_RENDERER);
	Com_Printf( "GL_RENDERER: %s\n", glstring );

	return RSERR_OK;
#endif
}

void 		GLimp_Init( void )
{
	Cvar_Get( "r_restartOnResize", "1", CVAR_ARCHIVE );
	Cvar_Get( "r_resizeDelay", "1000", CVAR_ARCHIVE );
	r_allowSoftwareGL = Cvar_Get( "r_allowSoftwareGL", "0", CVAR_LATCH );
	r_sdlDriver = Cvar_Get( "r_sdlDriver", "", CVAR_ROM );
	r_allowResize = Cvar_Get( "r_allowResize", "0", CVAR_ARCHIVE );
	r_centerWindow = Cvar_Get( "r_centerWindow", "0", CVAR_ARCHIVE );
	r_noborder = Cvar_Get( "r_noborder", "0", CVAR_ARCHIVE );

	/*	if( Cvar_VariableIntegerValue( "com_abnormalExit" ) )
	{
		Cvar_Set( "r_mode", va( "%d", R_MODE_FALLBACK ) );
		Cvar_Set( "r_picmap", "1" );
		Cvar_Set( "r_texturebits", "0" );
		Cvar_Set( "r_textureMode", "GL_LINEAR_MIPMAP_NEAREST" );
		Cvar_Set( "r_fullscreen", "0" );
		Cvar_Set( "r_centerWindow", "0" );
		Cvar_Set( "com_abnormalExit", "0" );
		}*/

	Sys_SetEnv( "SDL_VIDEO_CENTERED", r_centerWindow->integer ? "1" : "" );

	// Create the window and set up the context
	if(GLimp_StartDriverAndSetMode(r_mode->integer, r_fullscreen->integer, r_noborder->integer))
		goto success;

	// Try again, this time in a platform specific "safe mode"
	/* Sys_GLimpSafeInit( );

	if(GLimp_StartDriverAndSetMode(r_mode->integer, r_fullscreen->integer, qfalse))
		goto success; */

	/*	// Finally, try the default screen resolution
	if( r_mode->integer != R_MODE_FALLBACK )
	{
		Com_Printf( "Setting r_mode %d failed, falling back on r_mode %d\n",
				r_mode->integer, R_MODE_FALLBACK );

		if(GLimp_StartDriverAndSetMode(R_MODE_FALLBACK, qfalse, qfalse))
			goto success;
			}*/

	// Nothing worked, give up
	Com_Error( ERR_FATAL, "GLimp_Init() - could not load OpenGL subsystem" );

success:
	// This values force the UI to disable driver selection
	//	glConfig.driverType = GLDRV_ICD;
	//	glConfig.hardwareType = GLHW_GENERIC;
	glConfig.deviceSupportsGamma = (qboolean)(SDL_SetGamma( screen, 1.0f, 1.0f, 1.0f ) >= 0);

	// Mysteriously, if you use an NVidia graphics card and multiple monitors,
	// SDL_SetGamma will incorrectly return false... the first time; ask
	// again and you get the correct answer. This is a suspected driver bug, see
	// http://bugzilla.icculus.org/show_bug.cgi?id=4316
	glConfig.deviceSupportsGamma = (qboolean)(SDL_SetGamma( screen, 1.0f, 1.0f, 1.0f ) >= 0);

	if ( -1 == r_ignorehwgamma->integer)
		glConfig.deviceSupportsGamma = 1;

	if ( 1 == r_ignorehwgamma->integer)
		glConfig.deviceSupportsGamma = 0;

	// get our config strings
    glConfig.vendor_string = (const char *) qglGetString (GL_VENDOR);
    glConfig.renderer_string = (const char *) qglGetString (GL_RENDERER);
    glConfig.version_string = (const char *) qglGetString (GL_VERSION);
    glConfig.extensions_string = (const char *) qglGetString (GL_EXTENSIONS);

	// OpenGL driver constants
	qglGetIntegerv( GL_MAX_TEXTURE_SIZE, &glConfig.maxTextureSize );
	// stubbed or broken drivers may have reported 0...
	if ( glConfig.maxTextureSize <= 0 )
	{
		glConfig.maxTextureSize = 0;
	}

	// initialize extensions
	GLimp_InitExtensions( );

	Cvar_Get( "r_availableModes", "", CVAR_ROM );

	// This depends on SDL_INIT_VIDEO, hence having it here
	IN_Init( screen );
}

qboolean SNDDMA_Init(void)
{
	int rc;
    int fmt;
	int tmp;
    int i;
    // char *s; // bk001204 - unused
	struct audio_buf_info info;
	int caps;

	if (snd_inited)
		return 1;

	if (!snddevice) {
		sndbits = Cvar_Get("sndbits", "16", CVAR_ARCHIVE);
		sndspeed = Cvar_Get("sndspeed", "0", CVAR_ARCHIVE);
		sndchannels = Cvar_Get("sndchannels", "2", CVAR_ARCHIVE);
		snddevice = Cvar_Get("snddevice", "/dev/dsp", CVAR_ARCHIVE);
	}

	// open /dev/dsp, confirm capability to mmap, and get size of dma buffer
	if (!audio_fd) {
		audio_fd = open(snddevice->string, O_RDWR);

		if (audio_fd < 0) {
			perror(snddevice->string);
			Com_Printf("Could not open %s\n", snddevice->string);
			return 0;
			}
	}

	if (ioctl(audio_fd, SNDCTL_DSP_GETCAPS, &caps) == -1) {
		perror(snddevice->string);
        Com_Printf("Sound driver too old\n");
		close(audio_fd);
		return 0;
	}

	if (!(caps & DSP_CAP_TRIGGER) || !(caps & DSP_CAP_MMAP)) {
		Com_Printf("Sorry but your soundcard can't do this\n");
		close(audio_fd);
		return 0;
	}


	/* SNDCTL_DSP_GETOSPACE moved to be called later */
    
	// set sample bits & speed
  dma.samplebits = (int)sndbits->value;
	if (dma.samplebits != 16 && dma.samplebits != 8) {
        ioctl(audio_fd, SNDCTL_DSP_GETFMTS, &fmt);
        if (fmt & AFMT_S16_LE) 
			dma.samplebits = 16;
        else if (fmt & AFMT_U8) 
			dma.samplebits = 8;
    }

	dma.speed = (int)sndspeed->value;
	if (!dma.speed) {
        for (i=0 ; i<sizeof(tryrates)/4 ; i++)
            if (!ioctl(audio_fd, SNDCTL_DSP_SPEED, &tryrates[i])) 
				break;
        dma.speed = tryrates[i];
    }

	dma.channels = (int)sndchannels->value;
	if (dma.channels < 1 || dma.channels > 2)
		dma.channels = 2;
        
/*  mmap() call moved forward */

	tmp = 0;
	if (dma.channels == 2)
		tmp = 1;
    rc = ioctl(audio_fd, SNDCTL_DSP_STEREO, &tmp);
    if (rc < 0) {
		perror(snddevice->string);
        Com_Printf("Could not set %s to stereo=%d", snddevice->string, dma.channels);
		close(audio_fd);
        return 0;
    }

	if (tmp)
		dma.channels = 2;
	else
		dma.channels = 1;

    rc = ioctl(audio_fd, SNDCTL_DSP_SPEED, &dma.speed);
    if (rc < 0) {
		perror(snddevice->string);
        Com_Printf("Could not set %s speed to %d", snddevice->string, dma.speed);
		close(audio_fd);
        return 0;
    }

    if (dma.samplebits == 16) {
        rc = AFMT_S16_LE;
        rc = ioctl(audio_fd, SNDCTL_DSP_SETFMT, &rc);
        if (rc < 0) {
			perror(snddevice->string);
//.........这里部分代码省略.........

/*
===============
IN_InitJoystick
===============
*/
static void IN_InitJoystick( void )
{
	int i = 0;
	int total = 0;
	char buf[16384] = "";

	if (stick != NULL)
		SDL_JoystickClose(stick);

	stick = NULL;
	memset(&stick_state, '\0', sizeof (stick_state));

	if (!SDL_WasInit(SDL_INIT_JOYSTICK))
	{
		Com_DPrintf("Calling SDL_Init(SDL_INIT_JOYSTICK)...\n");
		if (SDL_Init(SDL_INIT_JOYSTICK) == -1)
		{
			Com_DPrintf("SDL_Init(SDL_INIT_JOYSTICK) failed: %s\n", SDL_GetError());
			return;
		}
		Com_DPrintf("SDL_Init(SDL_INIT_JOYSTICK) passed.\n");
	}

	total = SDL_NumJoysticks();
	Com_DPrintf("%d possible joysticks\n", total);

	// Print list and build cvar to allow ui to select joystick.
	for (i = 0; i < total; i++)
	{
		Q_strcat(buf, sizeof(buf), SDL_JoystickNameForIndex(i));
		Q_strcat(buf, sizeof(buf), "\n");
	}

	Cvar_Get( "in_availableJoysticks", buf, CVAR_ROM );

	if( !in_joystick->integer ) {
		Com_DPrintf( "Joystick is not active.\n" );
		SDL_QuitSubSystem(SDL_INIT_JOYSTICK);
		return;
	}

	in_joystickNo = Cvar_Get( "in_joystickNo", "0", CVAR_ARCHIVE );
	if( in_joystickNo->integer < 0 || in_joystickNo->integer >= total )
		Cvar_Set( "in_joystickNo", "0" );

	in_joystickUseAnalog = Cvar_Get( "in_joystickUseAnalog", "0", CVAR_ARCHIVE );

	in_joystickThreshold = Cvar_Get( "joy_threshold", "0.15", CVAR_ARCHIVE );

	stick = SDL_JoystickOpen( in_joystickNo->integer );

	if (stick == NULL) {
		Com_DPrintf( "No joystick opened.\n" );
		return;
	}

	Com_DPrintf( "Joystick %d opened\n", in_joystickNo->integer );
	Com_DPrintf( "Name:       %s\n", SDL_JoystickNameForIndex(in_joystickNo->integer) );
	Com_DPrintf( "Axes:       %d\n", SDL_JoystickNumAxes(stick) );
	Com_DPrintf( "Hats:       %d\n", SDL_JoystickNumHats(stick) );
	Com_DPrintf( "Buttons:    %d\n", SDL_JoystickNumButtons(stick) );
	Com_DPrintf( "Balls:      %d\n", SDL_JoystickNumBalls(stick) );
	Com_DPrintf( "Use Analog: %s\n", in_joystickUseAnalog->integer ? "Yes" : "No" );
	Com_DPrintf( "Threshold: %f\n", in_joystickThreshold->value );

	SDL_JoystickEventState(SDL_QUERY);
}

/*
============
Cvar_Set2
============
*/
cvar_t *Cvar_Set2( const char *var_name, const char *value, uint32_t defaultFlags, qboolean force ) {
	cvar_t	*var;

	if ( !Cvar_ValidateString( var_name ) ) {
		Com_Printf("invalid cvar name string: %s\n", var_name );
		var_name = "BADNAME";
	}

#if 0	// FIXME
	if ( value && !Cvar_ValidateString( value ) ) {
		Com_Printf("invalid cvar value string: %s\n", value );
		var_value = "BADVALUE";
	}
#endif

	var = Cvar_FindVar (var_name);
	if (!var) {
		if ( !value ) {
			return NULL;
		}
		// create it
		return Cvar_Get( var_name, value, defaultFlags );
	}

	if (!value ) {
		value = var->resetString;
	}

	value = Cvar_Validate(var, value, qtrue);

	if((var->flags & CVAR_LATCH) && var->latchedString)
	{
		if(!strcmp(value, var->string))
		{
			Cvar_FreeString(var->latchedString);
			var->latchedString = NULL;
			return var;
		}

		if(!strcmp(value, var->latchedString))
			return var;
	}
	else if(!strcmp(value, var->string))
		return var;

	// note what types of cvars have been modified (userinfo, archive, serverinfo, systeminfo)
	cvar_modifiedFlags |= var->flags;

	if (!force)
	{
		if ( (var->flags & (CVAR_SYSTEMINFO|CVAR_SERVER_CREATED)) && com_sv_running && !com_sv_running->integer && CL_ConnectedToServer() )
		{
			Com_Printf ("%s can only be set by server.\n", var_name);
			return var;
		}

		if (var->flags & CVAR_ROM)
		{
			Com_Printf ("%s is read only.\n", var_name);
			return var;
		}

		if (var->flags & CVAR_INIT)
		{
			Com_Printf ("%s is write protected.\n", var_name);
			return var;
		}

		if (var->flags & CVAR_LATCH)
		{
			if (var->latchedString)
			{
				if (strcmp(value, var->latchedString) == 0)
					return var;
				Cvar_FreeString (var->latchedString);
			}
			else
			{
				if (strcmp(value, var->string) == 0)
					return var;
			}

			Com_Printf ("%s will be changed upon restarting.\n", var_name);
			var->latchedString = CopyString(value);
			var->modified = qtrue;
			var->modificationCount++;
			return var;
		}

		if ( (var->flags & CVAR_CHEAT) && !cvar_cheats->integer )
		{
			Com_Printf ("%s is cheat protected.\n", var_name);
			return var;
		}
	}
//.........这里部分代码省略.........

/*
============
Cvar_Set2
============
*/
cvar_t *Cvar_Set2( const char *var_name, const char *value, qboolean force ) {
	cvar_t	*var;

	if ( !Cvar_ValidateString( var_name ) ) {
		Com_Printf("invalid cvar name string: %s\n", var_name );
		var_name = "BADNAME";
	}

#if 0	// FIXME
	if ( value && !Cvar_ValidateString( value ) ) {
		Com_Printf("invalid cvar value string: %s\n", value );
		var_value = "BADVALUE";
	}
#endif

	var = Cvar_FindVar (var_name);
	if (!var) {
		if ( !value ) {
			return NULL;
		}
		// create it
		if ( !force ) {
			return Cvar_Get( var_name, value, CVAR_USER_CREATED );
		} else {
			return Cvar_Get (var_name, value, 0);
		}
	}

	// Dont display the update when its internal
	if ( !(var->flags & CVAR_INTERNAL) )
	{
		Com_DPrintf( "Cvar_Set2: %s %s\n", var_name, value );
	}

	if (!value ) {
		value = var->resetString;
	}

	if (!strcmp(value,var->string)) {
		return var;
	}
	// note what types of cvars have been modified (userinfo, archive, serverinfo, systeminfo)
	cvar_modifiedFlags |= var->flags;

	if (!force)
	{
		if (var->flags & CVAR_ROM)
		{
			Com_Printf ("%s is read only.\n", var_name);
			return var;
		}

		if (var->flags & CVAR_INIT)
		{
			Com_Printf ("%s is write protected.\n", var_name);
			return var;
		}

		if (var->flags & CVAR_LATCH)
		{
			if (var->latchedString)
			{
				if (strcmp(value, var->latchedString) == 0)
					return var;
				Z_Free (var->latchedString);
			}
			else
			{
				if (strcmp(value, var->string) == 0)
					return var;
			}

			Com_Printf ("%s will be changed upon restarting.\n", var_name);
			var->latchedString = CopyString(value);
			var->modified = qtrue;
			var->modificationCount++;
			return var;
		}

		if ( (var->flags & CVAR_CHEAT) && !cvar_cheats->integer )
		{
			Com_Printf ("%s is cheat protected.\n", var_name);
			return var;
		}

	}
	else
	{
		if (var->latchedString)
		{
			Z_Free (var->latchedString);
			var->latchedString = NULL;
		}
	}

//.........这里部分代码省略.........