X-Git-Url: http://de.git.xonotic.org/?p=xonotic%2Fdarkplaces.git;a=blobdiff_plain;f=sys_win.c;h=e5655b653768b125371f396bd8e60ec9b8c82fb5;hp=bf7d54a16dc561a838041535106cf135e937fa2f;hb=224f9edae92441767654e2c10eb568bb91f86eb1;hpb=400e4a34bbef54082e7d39758fa5aa7ab1b654c7

diff --git a/sys_win.c b/sys_win.c
index bf7d54a1..e5655b65 100644
--- a/sys_win.c
+++ b/sys_win.c
@@ -8,7 +8,7 @@ of the License, or (at your option) any later version.
 
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 
 See the GNU General Public License for more details.
 
@@ -26,187 +26,47 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #include "conproc.h"
 #include "direct.h"
 
-#define CONSOLE_ERROR_TIMEOUT	60.0	// # of seconds to wait on Sys_Error running
-										//  dedicated before exiting
-#define PAUSE_SLEEP		50				// sleep time on pause or minimization
-#define NOT_FOCUS_SLEEP	20				// sleep time when not focus
+cvar_t sys_usetimegettime = {CVAR_SAVE, "sys_usetimegettime", "1"};
+
+// # of seconds to wait on Sys_Error running dedicated before exiting
+#define CONSOLE_ERROR_TIMEOUT	60.0
+// sleep time on pause or minimization
+#define PAUSE_SLEEP		50
+// sleep time when not focus
+#define NOT_FOCUS_SLEEP	20
 
 int			starttime;
-qboolean	ActiveApp, Minimized;
-qboolean	WinNT;
-
-static double		pfreq;
-static double		curtime = 0.0;
-static double		lastcurtime = 0.0;
-static int			lowshift;
-qboolean			isDedicated;
+
 static qboolean		sc_return_on_enter = false;
 HANDLE				hinput, houtput;
 
-static char			*tracking_tag = "Clams & Mooses";
-
 static HANDLE	tevent;
 static HANDLE	hFile;
 static HANDLE	heventParent;
 static HANDLE	heventChild;
 
-void Sys_InitFloatTime (void);
-
-volatile int					sys_checksum;
-
-
-/*
-================
-Sys_PageIn
-================
-*/
-/*
-void Sys_PageIn (void *ptr, int size)
-{
-	byte	*x;
-	int		m, n;
-
-// touch all the memory to make sure it's there. The 16-page skip is to
-// keep Win 95 from thinking we're trying to page ourselves in (we are
-// doing that, of course, but there's no reason we shouldn't)
-	x = (byte *)ptr;
-
-	for (n=0 ; n<4 ; n++)
-	{
-		for (m=0 ; m<(size - 16 * 0x1000) ; m += 4)
-		{
-			sys_checksum += *(int *)&x[m];
-			sys_checksum += *(int *)&x[m + 16 * 0x1000];
-		}
-	}
-}
-*/
-
 
 /*
 ===============================================================================
 
-FILE IO
+DLL MANAGEMENT
 
 ===============================================================================
 */
 
-// LordHavoc: 256 pak files (was 10)
-#define	MAX_HANDLES		256
-FILE	*sys_handles[MAX_HANDLES];
-
-int		findhandle (void)
-{
-	int		i;
-	
-	for (i=1 ; i<MAX_HANDLES ; i++)
-		if (!sys_handles[i])
-			return i;
-	Sys_Error ("out of handles");
-	return -1;
-}
-
-/*
-================
-filelength
-================
-*/
-int filelength (FILE *f)
-{
-	int		pos;
-	int		end;
-
-	pos = ftell (f);
-	fseek (f, 0, SEEK_END);
-	end = ftell (f);
-	fseek (f, pos, SEEK_SET);
-
-	return end;
-}
-
-int Sys_FileOpenRead (char *path, int *hndl)
-{
-	FILE	*f;
-	int		i, retval;
-
-	i = findhandle ();
-
-	f = fopen(path, "rb");
-
-	if (!f)
-	{
-		*hndl = -1;
-		retval = -1;
-	}
-	else
-	{
-		sys_handles[i] = f;
-		*hndl = i;
-		retval = filelength(f);
-	}
-
-	return retval;
-}
-
-int Sys_FileOpenWrite (char *path)
-{
-	FILE	*f;
-	int		i;
-
-	i = findhandle ();
-
-	f = fopen(path, "wb");
-	if (!f)
-		Host_Error ("Error opening %s: %s", path,strerror(errno));
-	sys_handles[i] = f;
-	
-	return i;
-}
-
-void Sys_FileClose (int handle)
-{
-	fclose (sys_handles[handle]);
-	sys_handles[handle] = NULL;
-}
-
-void Sys_FileSeek (int handle, int position)
-{
-	fseek (sys_handles[handle], position, SEEK_SET);
-}
-
-int Sys_FileRead (int handle, void *dest, int count)
-{
-	return fread (dest, 1, count, sys_handles[handle]);
-}
-
-int Sys_FileWrite (int handle, void *data, int count)
+dllhandle_t Sys_LoadLibrary (const char* name)
 {
-	return fwrite (data, 1, count, sys_handles[handle]);
+	return LoadLibrary (name);
 }
 
-int	Sys_FileTime (char *path)
+void Sys_UnloadLibrary (dllhandle_t handle)
 {
-	FILE	*f;
-	int		retval;
-
-	f = fopen(path, "rb");
-
-	if (f)
-	{
-		fclose(f);
-		retval = 1;
-	}
-	else
-	{
-		retval = -1;
-	}
-	
-	return retval;
+	FreeLibrary (handle);
 }
 
-void Sys_mkdir (char *path)
+void* Sys_GetProcAddress (dllhandle_t handle, const char* name)
 {
-	_mkdir (path);
+	return (void *)GetProcAddress (handle, name);
 }
 
 
@@ -218,76 +78,9 @@ SYSTEM IO
 ===============================================================================
 */
 
-/*
-================
-Sys_MakeCodeWriteable
-================
-*/
-void Sys_MakeCodeWriteable (unsigned long startaddr, unsigned long length)
-{
-	DWORD  flOldProtect;
-
-	if (!VirtualProtect((LPVOID)startaddr, length, PAGE_READWRITE, &flOldProtect))
-		Sys_Error("Protection change failed\n");
-}
-
-
-/*
-================
-Sys_Init
-================
-*/
-void Sys_Init (void)
-{
-	LARGE_INTEGER	PerformanceFreq;
-	unsigned int	lowpart, highpart;
-	OSVERSIONINFO	vinfo;
-
-	if (!QueryPerformanceFrequency (&PerformanceFreq))
-		Sys_Error ("No hardware timer available");
-
-// get 32 out of the 64 time bits such that we have around
-// 1 microsecond resolution
-#ifdef __BORLANDC__
-	lowpart = (unsigned int)PerformanceFreq.u.LowPart;
-	highpart = (unsigned int)PerformanceFreq.u.HighPart;
-#else
-	lowpart = (unsigned int)PerformanceFreq.LowPart;
-	highpart = (unsigned int)PerformanceFreq.HighPart;
-#endif	
-        lowshift = 0;
-
-	while (highpart || (lowpart > 2000000.0))
-	{
-		lowshift++;
-		lowpart >>= 1;
-		lowpart |= (highpart & 1) << 31;
-		highpart >>= 1;
-	}
-
-	pfreq = 1.0 / (double)lowpart;
-
-	Sys_InitFloatTime ();
-
-	vinfo.dwOSVersionInfoSize = sizeof(vinfo);
-
-	if (!GetVersionEx (&vinfo))
-		Sys_Error ("Couldn't get OS info");
-
-	if ((vinfo.dwMajorVersion < 4) ||
-		(vinfo.dwPlatformId == VER_PLATFORM_WIN32s))
-	{
-		Sys_Error ("WinQuake requires at least Win95 or NT 4.0");
-	}
-
-	if (vinfo.dwPlatformId == VER_PLATFORM_WIN32_NT)
-		WinNT = true;
-	else
-		WinNT = false;
-}
-
+void SleepUntilInput (int time);
 
-void Sys_Error (char *error, ...)
+void Sys_Error (const char *error, ...)
 {
 	va_list		argptr;
 	char		text[1024], text2[1024];
@@ -308,7 +101,7 @@ void Sys_Error (char *error, ...)
 	vsprintf (text, error, argptr);
 	va_end (argptr);
 
-	if (isDedicated)
+	if (cls.state == ca_dedicated)
 	{
 		va_start (argptr, error);
 		vsprintf (text, error, argptr);
@@ -322,13 +115,11 @@ void Sys_Error (char *error, ...)
 		WriteFile (houtput, text4, strlen (text4), &dummy, NULL);
 
 
-		starttime = Sys_FloatTime ();
+		starttime = Sys_DoubleTime ();
 		sc_return_on_enter = true;	// so Enter will get us out of here
 
-		while (!Sys_ConsoleInput () &&
-				((Sys_FloatTime () - starttime) < CONSOLE_ERROR_TIMEOUT))
-		{
-		}
+		while (!Sys_ConsoleInput () && ((Sys_DoubleTime () - starttime) < CONSOLE_ERROR_TIMEOUT))
+			SleepUntilInput(1);
 	}
 	else
 	{
@@ -337,15 +128,11 @@ void Sys_Error (char *error, ...)
 		if (!in_sys_error0)
 		{
 			in_sys_error0 = 1;
-			VID_SetDefaultMode ();
-			MessageBox(NULL, text, "Quake Error",
-					   MB_OK | MB_SETFOREGROUND | MB_ICONSTOP);
+			VID_Shutdown();
+			MessageBox(NULL, text, "Quake Error", MB_OK | MB_SETFOREGROUND | MB_ICONSTOP);
 		}
 		else
-		{
-			MessageBox(NULL, text, "Double Quake Error",
-					   MB_OK | MB_SETFOREGROUND | MB_ICONSTOP);
-		}
+			MessageBox(NULL, text, "Double Quake Error", MB_OK | MB_SETFOREGROUND | MB_ICONSTOP);
 	}
 
 	if (!in_sys_error1)
@@ -364,31 +151,14 @@ void Sys_Error (char *error, ...)
 	exit (1);
 }
 
-void Sys_Printf (char *fmt, ...)
-{
-	va_list		argptr;
-	char		text[1024];
-	DWORD		dummy;
-	
-	if (isDedicated)
-	{
-		va_start (argptr,fmt);
-		vsprintf (text, fmt, argptr);
-		va_end (argptr);
-
-		WriteFile(houtput, text, strlen (text), &dummy, NULL);	
-	}
-}
-
 void Sys_Quit (void)
 {
-
 	Host_Shutdown();
 
 	if (tevent)
 		CloseHandle (tevent);
 
-	if (isDedicated)
+	if (cls.state == ca_dedicated)
 		FreeConsole ();
 
 // shut down QHOST hooks if necessary
@@ -400,107 +170,91 @@ void Sys_Quit (void)
 
 /*
 ================
-Sys_FloatTime
+Sys_DoubleTime
 ================
 */
-double Sys_FloatTime (void)
+double Sys_DoubleTime (void)
 {
-	static int			sametimecount;
-	static unsigned int	oldtime;
-	static int			first = 1;
-	LARGE_INTEGER		PerformanceCount;
-	unsigned int		temp, t2;
-	double				time;
-
-	QueryPerformanceCounter (&PerformanceCount);
-
-#ifdef __BORLANDC__
-	temp = ((unsigned int)PerformanceCount.u.LowPart >> lowshift) |
-	    ((unsigned int)PerformanceCount.u.HighPart << (32 - lowshift));
-#else
-
-	temp = ((unsigned int)PerformanceCount.LowPart >> lowshift) |
-		   ((unsigned int)PerformanceCount.HighPart << (32 - lowshift));
-#endif
-	if (first)
-	{
-		oldtime = temp;
-		first = 0;
-	}
-	else
+	static int first = true;
+	static double oldtime = 0.0, curtime = 0.0;
+	double newtime;
+	// LordHavoc: note to people modifying this code, DWORD is specifically defined as an unsigned 32bit number, therefore the 65536.0 * 65536.0 is fine.
+	if (sys_usetimegettime.integer)
 	{
-	// check for turnover or backward time
-		if ((temp <= oldtime) && ((oldtime - temp) < 0x10000000))
+		static int firsttimegettime = true;
+		// timeGetTime
+		// platform:
+		// Windows 95/98/ME/NT/2000/XP
+		// features:
+		// reasonable accuracy (millisecond)
+		// issues:
+		// wraps around every 47 days or so (but this is non-fatal to us, odd times are rejected, only causes a one frame stutter)
+
+		// make sure the timer is high precision, otherwise different versions of windows have varying accuracy
+		if (firsttimegettime)
 		{
-			oldtime = temp;	// so we can't get stuck
+			timeBeginPeriod (1);
+			firsttimegettime = false;
 		}
-		else
-		{
-			t2 = temp - oldtime;
-
-			time = (double)t2 * pfreq;
-			oldtime = temp;
-
-			curtime += time;
-
-			if (curtime == lastcurtime)
-			{
-				sametimecount++;
 
-				if (sametimecount > 100000)
-				{
-					curtime += 1.0;
-					sametimecount = 0;
-				}
-			}
-			else
-			{
-				sametimecount = 0;
-			}
-
-			lastcurtime = curtime;
-		}
+		newtime = (double) timeGetTime () / 1000.0;
+	}
+	else
+	{
+		// QueryPerformanceCounter
+		// platform:
+		// Windows 95/98/ME/NT/2000/XP
+		// features:
+		// very accurate (CPU cycles)
+		// known issues:
+		// does not necessarily match realtime too well (tends to get faster and faster in win98)
+		// wraps around occasionally on some platforms (depends on CPU speed and probably other unknown factors)
+		double timescale;
+		LARGE_INTEGER PerformanceFreq;
+		LARGE_INTEGER PerformanceCount;
+
+		if (!QueryPerformanceFrequency (&PerformanceFreq))
+			Sys_Error ("No hardware timer available");
+		QueryPerformanceCounter (&PerformanceCount);
+
+		#ifdef __BORLANDC__
+		timescale = 1.0 / ((double) PerformanceFreq.u.LowPart + (double) PerformanceFreq.u.HighPart * 65536.0 * 65536.0);
+		newtime = ((double) PerformanceCount.u.LowPart + (double) PerformanceCount.u.HighPart * 65536.0 * 65536.0) * timescale;
+		#else
+		timescale = 1.0 / ((double) PerformanceFreq.LowPart + (double) PerformanceFreq.HighPart * 65536.0 * 65536.0);
+		newtime = ((double) PerformanceCount.LowPart + (double) PerformanceCount.HighPart * 65536.0 * 65536.0) * timescale;
+		#endif
 	}
 
-    return curtime;
-}
-
-
-/*
-================
-Sys_InitFloatTime
-================
-*/
-void Sys_InitFloatTime (void)
-{
-	int		j;
-
-	Sys_FloatTime ();
-
-	j = COM_CheckParm("-starttime");
-
-	if (j)
+	if (first)
 	{
-		curtime = (double) (atof(com_argv[j+1]));
+		first = false;
+		oldtime = newtime;
 	}
-	else
+
+	if (newtime < oldtime)
 	{
-		curtime = 0.0;
+		// warn if it's significant
+		if (newtime - oldtime < -0.01)
+			Con_Printf("Sys_DoubleTime: time stepped backwards (went from %f to %f, difference %f)\n", oldtime, newtime, newtime - oldtime);
 	}
+	else
+		curtime += newtime - oldtime;
+	oldtime = newtime;
 
-	lastcurtime = curtime;
+	return curtime;
 }
 
 
 char *Sys_ConsoleInput (void)
 {
-	static char	text[256];
-	static int		len;
-	INPUT_RECORD	recs[1024];
-	int		dummy;
-	int		ch, numread, numevents;
+	static char text[256];
+	static int len;
+	INPUT_RECORD recs[1024];
+	int ch;
+	DWORD numread, numevents, dummy;
 
-	if (!isDedicated)
+	if (cls.state != ca_dedicated)
 		return NULL;
 
 
@@ -527,7 +281,7 @@ char *Sys_ConsoleInput (void)
 				switch (ch)
 				{
 					case '\r':
-						WriteFile(houtput, "\r\n", 2, &dummy, NULL);	
+						WriteFile(houtput, "\r\n", 2, &dummy, NULL);
 
 						if (len)
 						{
@@ -546,7 +300,7 @@ char *Sys_ConsoleInput (void)
 						break;
 
 					case '\b':
-						WriteFile(houtput, "\b \b", 3, &dummy, NULL);	
+						WriteFile(houtput, "\b \b", 3, &dummy, NULL);
 						if (len)
 						{
 							len--;
@@ -556,7 +310,7 @@ char *Sys_ConsoleInput (void)
 					default:
 						if (ch >= ' ')
 						{
-							WriteFile(houtput, &ch, 1, &dummy, NULL);	
+							WriteFile(houtput, &ch, 1, &dummy, NULL);
 							text[len] = ch;
 							len = (len + 1) & 0xff;
 						}
@@ -579,7 +333,7 @@ void Sys_Sleep (void)
 
 void Sys_SendKeyEvents (void)
 {
-    MSG        msg;
+	MSG msg;
 
 	while (PeekMessage (&msg, NULL, 0, 0, PM_NOREMOVE))
 	{
@@ -589,8 +343,8 @@ void Sys_SendKeyEvents (void)
 		if (!GetMessage (&msg, NULL, 0, 0))
 			Sys_Quit ();
 
-      	TranslateMessage (&msg);
-      	DispatchMessage (&msg);
+		TranslateMessage (&msg);
+		DispatchMessage (&msg);
 	}
 }
 
@@ -598,21 +352,15 @@ void Sys_SendKeyEvents (void)
 /*
 ==============================================================================
 
- WINDOWS CRAP
+WINDOWS CRAP
 
 ==============================================================================
 */
 
 
-/*
-==================
-WinMain
-==================
-*/
 void SleepUntilInput (int time)
 {
-
-	MsgWaitForMultipleObjects(1, &tevent, FALSE, time, QS_ALLINPUT);
+	MsgWaitForMultipleObjects(1, &tevent, false, time, QS_ALLINPUT);
 }
 
 
@@ -623,19 +371,18 @@ WinMain
 */
 HINSTANCE	global_hInstance;
 int			global_nCmdShow;
-char		*argv[MAX_NUM_ARGVS];
-static char	*empty_string = "";
+const char	*argv[MAX_NUM_ARGVS];
+char		program_name[MAX_OSPATH];
 
 int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
 {
-	double			time, oldtime, newtime/*, timediff*/;
-	MEMORYSTATUS	lpBuffer;
-	static	char	cwd[1024];
-	int				t;
+	double frameoldtime, framenewtime;
+	MEMORYSTATUS lpBuffer;
+	int t;
 
-    /* previous instances do not exist in Win32 */
-    if (hPrevInstance)
-        return 0;
+	/* previous instances do not exist in Win32 */
+	if (hPrevInstance)
+		return 0;
 
 	global_hInstance = hInstance;
 	global_nCmdShow = nCmdShow;
@@ -643,27 +390,20 @@ int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLin
 	lpBuffer.dwLength = sizeof(MEMORYSTATUS);
 	GlobalMemoryStatus (&lpBuffer);
 
-	if (!GetCurrentDirectory (sizeof(cwd), cwd))
-		Sys_Error ("Couldn't determine current directory");
-
-	if (cwd[strlen(cwd)-1] == '/')
-		cwd[strlen(cwd)-1] = 0;
-
-	host_parms.basedir = cwd;
-	host_parms.cachedir = NULL;
-
-	host_parms.argc = 1;
-	argv[0] = empty_string;
+	com_argc = 1;
+	program_name[sizeof(program_name)-1] = 0;
+	GetModuleFileNameA(NULL, program_name, sizeof(program_name) - 1);
+	argv[0] = program_name;
 
-	while (*lpCmdLine && (host_parms.argc < MAX_NUM_ARGVS))
+	while (*lpCmdLine && (com_argc < MAX_NUM_ARGVS))
 	{
 		while (*lpCmdLine && ((*lpCmdLine <= 32) || (*lpCmdLine > 126)))
 			lpCmdLine++;
 
 		if (*lpCmdLine)
 		{
-			argv[host_parms.argc] = lpCmdLine;
-			host_parms.argc++;
+			argv[com_argc] = lpCmdLine;
+			com_argc++;
 
 			while (*lpCmdLine && ((*lpCmdLine > 32) && (*lpCmdLine <= 126)))
 				lpCmdLine++;
@@ -673,67 +413,25 @@ int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLin
 				*lpCmdLine = 0;
 				lpCmdLine++;
 			}
-			
 		}
 	}
+	com_argv = argv;
 
-	host_parms.argv = argv;
-
-	COM_InitArgv (host_parms.argc, host_parms.argv);
-
-	host_parms.argc = com_argc;
-	host_parms.argv = com_argv;
-
-	isDedicated = (COM_CheckParm ("-dedicated") != 0);
-
-// take the greater of all the available memory or half the total memory,
-// but at least 8 Mb and no more than 16 Mb, unless they explicitly
-// request otherwise
-	/*
-	host_parms.memsize = lpBuffer.dwAvailPhys;
-
-	if (host_parms.memsize < MINIMUM_WIN_MEMORY)
-		host_parms.memsize = MINIMUM_WIN_MEMORY;
-
-	if (host_parms.memsize < (lpBuffer.dwTotalPhys >> 1))
-		host_parms.memsize = lpBuffer.dwTotalPhys >> 1;
-
-	if (host_parms.memsize > MAXIMUM_WIN_MEMORY)
-		host_parms.memsize = MAXIMUM_WIN_MEMORY;
-	*/
-	host_parms.memsize = DEFAULTMEM * 1048576;
-
-	if ((t = COM_CheckParm("-heapsize")))
-	{
-		t++;
-		if (t < com_argc)
-			host_parms.memsize = atoi (com_argv[t]) * 1024;
-	}
-	else if ((t = COM_CheckParm("-mem")) || (t = COM_CheckParm("-winmem")))
-	{
-		t++;
-		if (t < com_argc)
-			host_parms.memsize = atoi (com_argv[t]) * 1048576;
-	}
+	Sys_Shared_EarlyInit();
 
-	host_parms.membase = qmalloc(host_parms.memsize);
+	Cvar_RegisterVariable(&sys_usetimegettime);
 
-	if (!host_parms.membase)
-		Sys_Error ("Not enough memory free; check disk space\n");
-
-//	Sys_PageIn (parms.membase, parms.memsize);
-
-	tevent = CreateEvent(NULL, FALSE, FALSE, NULL);
+	tevent = CreateEvent(NULL, false, false, NULL);
 
 	if (!tevent)
 		Sys_Error ("Couldn't create event");
 
-	if (isDedicated)
+	// LordHavoc: can't check cls.state because it hasn't been initialized yet
+	// if (cls.state == ca_dedicated)
+	if (COM_CheckParm("-dedicated"))
 	{
 		if (!AllocConsole ())
-		{
 			Sys_Error ("Couldn't create dedicated server console");
-		}
 
 		hinput = GetStdHandle (STD_INPUT_HANDLE);
 		houtput = GetStdHandle (STD_OUTPUT_HANDLE);
@@ -744,13 +442,13 @@ int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLin
 			if (t < com_argc)
 				hFile = (HANDLE)atoi (com_argv[t+1]);
 		}
-			
+
 		if ((t = COM_CheckParm ("-HPARENT")) > 0)
 		{
 			if (t < com_argc)
 				heventParent = (HANDLE)atoi (com_argv[t+1]);
 		}
-			
+
 		if ((t = COM_CheckParm ("-HCHILD")) > 0)
 		{
 			if (t < com_argc)
@@ -760,67 +458,36 @@ int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLin
 		InitConProc (hFile, heventParent, heventChild);
 	}
 
-	Sys_Init ();
-
 // because sound is off until we become active
 	S_BlockSound ();
 
-	Sys_Printf ("Host_Init\n");
 	Host_Init ();
 
-	oldtime = Sys_FloatTime ();
+	Sys_Shared_LateInit();
+
+	frameoldtime = Sys_DoubleTime ();
 
-    /* main window message loop */
+	/* main window message loop */
 	while (1)
 	{
-		if (isDedicated)
-		{
-			newtime = Sys_FloatTime ();
-			time = newtime - oldtime;
-
-			while (time < sys_ticrate.value )
-			{
-				Sys_Sleep();
-				newtime = Sys_FloatTime ();
-				time = newtime - oldtime;
-			}
-		}
-		else
+		if (cls.state != ca_dedicated)
 		{
 		// yield the CPU for a little while when paused, minimized, or not the focus
-			if ((cl.paused && (!ActiveApp && !DDActive)) || Minimized)
+			if ((cl.paused && !vid_activewindow) || vid_hidden)
 			{
 				SleepUntilInput (PAUSE_SLEEP);
 				scr_skipupdate = 1;		// no point in bothering to draw
 			}
-			else if (!ActiveApp && !DDActive)
-			{
+			else if (!vid_activewindow)
 				SleepUntilInput (NOT_FOCUS_SLEEP);
-			}
-			/*
-			else if (!cls.timedemo && time < (timediff = 1.0 / maxfps.value))
-			{
-				newtime = Sys_FloatTime ();
-				time = newtime - oldtime;
-
-				while (time < timediff)
-				{
-					Sys_Sleep();
-					newtime = Sys_FloatTime ();
-					time = newtime - oldtime;
-				}
-			}
-			*/
-
-			newtime = Sys_FloatTime ();
-			time = newtime - oldtime;
 		}
 
-		Host_Frame (time);
-		oldtime = newtime;
+		framenewtime = Sys_DoubleTime ();
+		Host_Frame (framenewtime - frameoldtime);
+		frameoldtime = framenewtime;
 	}
 
-    /* return success of application */
-    return TRUE;
+	/* return success of application */
+	return true;
 }