fteqw/engine/client/sys_win.c

/*
Copyright (C) 1996-1997 Id Software, Inc.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
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.  

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/
// sys_win.h

#include "quakedef.h"
#include "winquake.h"
#include "resource.h"
#include "errno.h"
#include "fcntl.h"
#include <limits.h>
#include <conio.h>
#include <io.h>
#include <direct.h>

#ifdef NODIRECTX
#define DDActive 0
#endif


#define MINIMUM_WIN_MEMORY	0x0800000
#define MAXIMUM_WIN_MEMORY	0x1000000

#define PAUSE_SLEEP		50				// sleep time on pause or minimization
#define NOT_FOCUS_SLEEP	20				// sleep time when not focus

int		starttime;
qboolean ActiveApp, Minimized;
qboolean	WinNT;

HWND	hwnd_dialog;		// startup dialog box

static HANDLE		hinput, houtput;

HANDLE		qwclsemaphore;

static HANDLE	tevent;

void Sys_InitFloatTime (void);

void VARGS MaskExceptions (void);
void Sys_PopFPCW (void);
void Sys_PushFPCW_SetHigh (void);

void VARGS Sys_DebugLog(char *file, char *fmt, ...)
{
    va_list argptr; 
    static char data[1024];
    int fd;
    
    va_start(argptr, fmt);
    _vsnprintf(data, sizeof(data)-1, fmt, argptr);
    va_end(argptr);

#if defined(CRAZYDEBUGGING) && CRAZYDEBUGGING > 1
	{
		static int sock;
		if (!sock)
		{
			struct sockaddr_in sa;
			netadr_t na;
			int _true = true;
			int listip;
			listip = COM_CheckParm("-debugip");
			NET_StringToAdr(listip?com_argv[listip+1]:"127.0.0.1", &na);
			NetadrToSockadr(&na, (struct sockaddr_qstorage*)&sa);
			sa.sin_port = htons(10000);
			sock = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
			if (-1==connect(sock, (struct sockaddr*)&sa, sizeof(sa)))
				Sys_Error("Couldn't send debug log lines\n");
			setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, (char*)&_true, sizeof(_true));
		}
		send(sock, data, strlen(data), 0);
	}
#endif
    fd = open(file, O_WRONLY | O_CREAT | O_APPEND, 0666);
    write(fd, data, strlen(data));
    close(fd);
};

int *debug;



#if (_WIN32_WINNT < 0x0400)
	#define LLKHF_ALTDOWN        0x00000020
	#define LLKHF_UP             0x00000080
	#define WH_KEYBOARD_LL     13
	typedef struct {
		DWORD vkCode;
		DWORD scanCode;
		DWORD flags;
		DWORD time;
		DWORD dwExtraInfo;
	} KBDLLHOOKSTRUCT;
#elif defined(MINGW)
	#define LLKHF_UP             0x00000080
#endif

HHOOK llkeyboardhook;

cvar_t	sys_disableWinKeys = {"sys_disableWinKeys", "0"};
cvar_t	sys_disableTaskSwitch = {"sys_disableTaskSwitch", "0", NULL, CVAR_NOTFROMSERVER};	// please don't encourage people to use this...

LRESULT CALLBACK LowLevelKeyboardProc (INT nCode, WPARAM wParam, LPARAM lParam)
{
	KBDLLHOOKSTRUCT *pkbhs = (KBDLLHOOKSTRUCT *) lParam;
	if (ActiveApp)
	switch (nCode)
	{
	case HC_ACTION:
		{
		//Trap the Left Windowskey
			if (pkbhs->vkCode == VK_LWIN)
			{
				Key_Event (K_LWIN, !(pkbhs->flags & LLKHF_UP));
				return 1;
			}
		//Trap the Right Windowskey
			if (pkbhs->vkCode == VK_RWIN)
			{
				Key_Event (K_RWIN, !(pkbhs->flags & LLKHF_UP));
				return 1;
			}
		//Trap the Application Key (what a pointless key)
			if (pkbhs->vkCode == VK_APPS)
			{
				Key_Event (K_APP, !(pkbhs->flags & LLKHF_UP));
				return 1;
			}

		// Disable CTRL+ESC
			//this works, but we've got to give some way to tab out...
			if (sys_disableTaskSwitch.value)
			{
				if (pkbhs->vkCode == VK_ESCAPE && GetAsyncKeyState (VK_CONTROL) >> ((sizeof(SHORT) * 8) - 1))
					return 1;
		// Disable ATL+TAB
				if (pkbhs->vkCode == VK_TAB && pkbhs->flags & LLKHF_ALTDOWN)
					return 1;
		// Disable ALT+ESC
				if (pkbhs->vkCode == VK_ESCAPE && pkbhs->flags & LLKHF_ALTDOWN)
					return 1;
			}

			break;
		}
	default:
		break;
	}
	return CallNextHookEx (llkeyboardhook, nCode, wParam, lParam);
}

void SetHookState(qboolean state)
{
	if (!state == !llkeyboardhook)	//not so types are comparable
		return;

	if (llkeyboardhook)
	{
		UnhookWindowsHookEx(llkeyboardhook);
		llkeyboardhook = NULL;
	}
	if (state)
		llkeyboardhook = SetWindowsHookEx(WH_KEYBOARD_LL, LowLevelKeyboardProc, GetModuleHandle(NULL), 0);
}


/*
===============================================================================

FILE IO

===============================================================================
*/

/*
================
Sys_filelength
================
*/
int Sys_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_FileTime (char *path)
{
	FILE	*f;
	int		t=0, retval;

	if (qrenderer)
		t = VID_ForceUnlockedAndReturnState ();
	
	f = fopen(path, "rb");
	
	if (f)
	{
		fclose(f);
		retval = 1;
	}
	else
	{
		retval = -1;
	}

	if (qrenderer)
		VID_ForceLockState (t);
	return retval;
}

void Sys_mkdir (char *path)
{
	_mkdir (path);
}

qboolean Sys_remove (char *path)
{
	remove (path);

	return true;
}

int Sys_EnumerateFiles (char *gpath, char *match, int (*func)(char *, int, void *), void *parm)
{
	HANDLE r;
	WIN32_FIND_DATA fd;	
	char apath[MAX_OSPATH];
	char file[MAX_OSPATH];
	char *s;
	int go;
	strcpy(apath, match);
//	sprintf(apath, "%s%s", gpath, match);
	for (s = apath+strlen(apath)-1; s>= apath; s--)
	{
		if (*s == '/')			
			break;
	}
	s++;
	*s = '\0';	
	

	if (gpath)
		sprintf(file, "%s/%s", gpath, match);
	else
		strcpy(file, match);
	r = FindFirstFile(file, &fd);
	if (r==(HANDLE)-1)
		return 1;
    go = true;
	do
	{
		if (*fd.cFileName == '.');
		else if (fd.dwFileAttributes != 16)	//is a directory
		{
			sprintf(file, "%s%s", apath, fd.cFileName);
			go = func(file, fd.nFileSizeLow, parm);
		}
		else
		{
			sprintf(file, "%s%s/", apath, fd.cFileName);
			go = func(file, fd.nFileSizeLow, parm);
		}
	}
	while(FindNextFile(r, &fd) && go);
	FindClose(r);

	return go;
}

/*
===============================================================================

SYSTEM IO

===============================================================================
*/

/*
================
Sys_MakeCodeWriteable
================
*/
void Sys_MakeCodeWriteable (unsigned long startaddr, unsigned long length)
{
	DWORD  flOldProtect;

//@@@ copy on write or just read-write?
	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;
/*
#ifndef SERVERONLY
#ifndef CLIENTONLY
	if (!isDedicated)
#endif
	{
		// allocate a named semaphore on the client so the
		// front end can tell if it is alive

		// mutex will fail if semephore allready exists
		qwclsemaphore = CreateMutex(
			NULL,         // Security attributes 
			0,            // owner       
			"qwcl"); // Semaphore name      
	//	if (!qwclsemaphore)
	//		Sys_Error ("QWCL is already running on this system");
		CloseHandle (qwclsemaphore);

		qwclsemaphore = CreateSemaphore(
			NULL,         // Security attributes 
			0,            // Initial count       
			1,            // Maximum count       
			"qwcl"); // Semaphore name      
	}
#endif
	*/

	MaskExceptions ();
	Sys_SetFPCW ();

#if 0
	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
	lowpart = (unsigned int)PerformanceFreq.LowPart;
	highpart = (unsigned int)PerformanceFreq.HighPart;
	lowshift = 0;

	while (highpart || (lowpart > 2000000.0))
	{
		lowshift++;
		lowpart >>= 1;
		lowpart |= (highpart & 1) << 31;
		highpart >>= 1;
	}

	pfreq = 1.0 / (double)lowpart;

	Sys_InitFloatTime ();
#endif

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

	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 ("QuakeWorld requires at least Win95 or NT 4.0");
	}
	
	if (vinfo.dwPlatformId == VER_PLATFORM_WIN32_NT)
		WinNT = true;
	else
		WinNT = false;
}


void VARGS Sys_Error (const char *error, ...)
{
	va_list		argptr;
	char		text[1024];
	//, text2[1024];
//	DWORD		dummy;	

 	va_start (argptr, error);
	_vsnprintf (text, sizeof(text)-1, error, argptr);
	va_end (argptr);

	SetHookState(false);
	Host_Shutdown ();

	MessageBox(NULL, text, "Error", 0);

#ifndef SERVERONLY
	CloseHandle (qwclsemaphore);
#endif

	SetHookState(false);
	exit (1);
}

void VARGS Sys_Printf (char *fmt, ...)
{
	va_list		argptr;
	char		text[1024];
	DWORD		dummy;

	if (!houtput)
		return;

	va_start (argptr,fmt);
	_vsnprintf (text, sizeof(text)-1, fmt, argptr);
	va_end (argptr);

	WriteFile (houtput, text, strlen(text), &dummy, NULL);
}

void Sys_Quit (void)
{
	if (VID_ForceUnlockedAndReturnState)
		VID_ForceUnlockedAndReturnState ();

	SetHookState(false);

	Host_Shutdown();

#ifndef SERVERONLY
	if (tevent)
		CloseHandle (tevent);

	if (qwclsemaphore)
		CloseHandle (qwclsemaphore);
#endif

/* Yeah, right, just wishful thinking.
#ifdef _DEBUG
	if (Z_Allocated())
		MessageBox(0, "Some memory was left allocated", "Mem was left", 0);
#endif
*/


	SetHookState(false);
	exit (0);
}


#if 0
/*
================
Sys_DoubleTime
================
*/
double Sys_DoubleTime (void)
{
	static int			sametimecount;
	static unsigned int	oldtime;
	static int			first = 1;
	LARGE_INTEGER		PerformanceCount;
	unsigned int		temp, t2;
	double				time;

	Sys_PushFPCW_SetHigh ();

	QueryPerformanceCounter (&PerformanceCount);

	temp = ((unsigned int)PerformanceCount.LowPart >> lowshift) |
		   ((unsigned int)PerformanceCount.HighPart << (32 - lowshift));

	if (first)
	{
		oldtime = temp;
		first = 0;
	}
	else
	{
	// check for turnover or backward time
		if ((temp <= oldtime) && ((oldtime - temp) < 0x10000000))
		{
			oldtime = temp;	// so we can't get stuck
		}
		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;
		}
	}

	Sys_PopFPCW ();

    return curtime;
}

/*
================
Sys_InitFloatTime
================
*/
void Sys_InitFloatTime (void)
{
	int		j;

	Sys_DoubleTime ();

	j = COM_CheckParm("-starttime");

	if (j)
	{
		curtime = (double) (Q_atof(com_argv[j+1]));
	}
	else
	{
		curtime = 0.0;
	}

	lastcurtime = curtime;
}

#endif
// DWORD starttime;
double Sys_DoubleTime (void)
{
	static DWORD starttime;
	static qboolean first = true;
	DWORD now;
//	double t;

	now = timeGetTime();

	if (first) {
		first = false;
		starttime = now;
		return 0.0;
	}
	
	if (now < starttime) // wrapped?
	{
		double r;
		r = (now / 1000.0) + (LONG_MAX - starttime / 1000.0);
		starttime = now;
		return r;
	}

	if (now - starttime == 0)
		return 0.0;

	return (now - starttime) / 1000.0;
}













/////////////////////////////////////////
//the system console stuff

char *Sys_ConsoleInput (void)
{
	static char	text[256];
	static int		len;
	INPUT_RECORD	recs[1024];
//	int		count;
	int		i;
	int		ch;
	DWORD numevents, numread, dummy=0;
	HANDLE	th;
	char	*clipText, *textCopied;

	for ( ;; )
	{
		if (!GetNumberOfConsoleInputEvents (hinput, &numevents))
			Sys_Error ("Error getting # of console events");

		if (numevents <= 0)
			break;

		if (!ReadConsoleInput(hinput, recs, 1, &numread))
			Sys_Error ("Error reading console input");

		if (numread != 1)
			Sys_Error ("Couldn't read console input");

		if (recs[0].EventType == KEY_EVENT)
		{
			if (recs[0].Event.KeyEvent.bKeyDown)
			{
				ch = recs[0].Event.KeyEvent.uChar.AsciiChar;

				switch (ch)
				{
					case '\r':
						WriteFile(houtput, "\r\n", 2, &dummy, NULL);	

						if (len)
						{
							text[len] = 0;
							len = 0;
							return text;
						}
						break;

					case '\b':
						if (len)
						{
							len--;
							WriteFile(houtput, "\b \b", 3, &dummy, NULL);
						}
						break;

					default:
						if (((ch=='V' || ch=='v') && (recs[0].Event.KeyEvent.dwControlKeyState & 
							(LEFT_CTRL_PRESSED | RIGHT_CTRL_PRESSED))) || ((recs[0].Event.KeyEvent.dwControlKeyState 
							& SHIFT_PRESSED) && (recs[0].Event.KeyEvent.wVirtualKeyCode
							==VK_INSERT))) {
							if (OpenClipboard(NULL)) {
								th = GetClipboardData(CF_TEXT);
								if (th) {
									clipText = GlobalLock(th);
									if (clipText) {
										textCopied = BZ_Malloc(GlobalSize(th)+1);
										strcpy(textCopied, clipText);
/* Substitutes a NULL for every token */strtok(textCopied, "\n\r\b");
										i = strlen(textCopied);
										if (i+len>=256)
											i=256-len;
										if (i>0) {
											textCopied[i]=0;
											text[len]=0;
											strcat(text, textCopied);
											len+=dummy;
											WriteFile(houtput, textCopied, i, &dummy, NULL);
										}
										BZ_Free(textCopied);
									}
									GlobalUnlock(th);
								}
								CloseClipboard();
							}
						} else if (ch >= ' ')
						{
							WriteFile(houtput, &ch, 1, &dummy, NULL);	
							text[len] = ch;
							len = (len + 1) & 0xff;
						}

						break;

				}
			}
		}
	}

	return NULL;
}

BOOL WINAPI HandlerRoutine (DWORD dwCtrlType)
{
	switch (dwCtrlType)
	{
		case CTRL_C_EVENT:		
		case CTRL_BREAK_EVENT:
		case CTRL_CLOSE_EVENT:
		case CTRL_LOGOFF_EVENT:
		case CTRL_SHUTDOWN_EVENT:
			Cbuf_AddText ("quit\n", RESTRICT_LOCAL);
			return true;
	}

	return false;
}

qboolean Sys_InitTerminal (void)
{
	if (!AllocConsole())
		return false;
	SetConsoleCtrlHandler (HandlerRoutine, TRUE);
	SetConsoleTitle ("FTE dedicated server");
	hinput = GetStdHandle (STD_INPUT_HANDLE);
	houtput = GetStdHandle (STD_OUTPUT_HANDLE);

	return true;
}
void Sys_CloseTerminal (void)
{
	FreeConsole();
}


//
////////////////////////////

void Sys_Sleep (void)
{
}


void Sys_SendKeyEvents (void)
{
    MSG        msg;

	if (!qrenderer)
	{
		SV_GetConsoleCommands ();
		return;
	}

	while (PeekMessage (&msg, NULL, 0, 0, PM_NOREMOVE))
	{
	// we always update if there are any event, even if we're paused
		scr_skipupdate = 0;

		if (!GetMessage (&msg, NULL, 0, 0))
			break;
//			Sys_Quit ();
      	TranslateMessage (&msg);
      	DispatchMessage (&msg);
	}
}


void Sys_ServerActivity(void)
{
	FlashWindow(mainwindow, true);
}

/*
==============================================================================

 WINDOWS CRAP

==============================================================================
*/

/*
==================
WinMain
==================
*/
void SleepUntilInput (int time)
{

	MsgWaitForMultipleObjects(1, &tevent, FALSE, time, QS_ALLINPUT);
}

/*
==================
WinMain
==================
*/
HINSTANCE	global_hInstance;
int			global_nCmdShow;
char		*argv[MAX_NUM_ARGVS];
static char	exename[256];
HWND		hwnd_dialog;

#ifndef CLIENTONLY
qboolean isDedicated = false;
#endif

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
//    MSG				msg;
	quakeparms_t	parms;
	double			time, oldtime, newtime;
	MEMORYSTATUS	lpBuffer;
	static	char	cwd[1024];
	int				t;
	RECT			rect;

    /* previous instances do not exist in Win32 */
    if (hPrevInstance)
        return 0;	

	global_hInstance = hInstance;
	global_nCmdShow = nCmdShow;

	lpBuffer.dwLength = sizeof(MEMORYSTATUS);
	GlobalMemoryStatus (&lpBuffer);

	GetModuleFileName(NULL, cwd, sizeof(cwd)-1);
	strcpy(exename, COM_SkipPath(cwd));

	parms.argc = 1;
	argv[0] = exename;

	while (*lpCmdLine && (parms.argc < MAX_NUM_ARGVS))
	{
		while (*lpCmdLine && ((*lpCmdLine <= 32) || (*lpCmdLine > 126)))
			lpCmdLine++;

		if (*lpCmdLine)
		{
			argv[parms.argc] = lpCmdLine;
			parms.argc++;

			while (*lpCmdLine && ((*lpCmdLine > 32) && (*lpCmdLine <= 126)))
				lpCmdLine++;

			if (*lpCmdLine)
			{
				*lpCmdLine = 0;
				lpCmdLine++;
			}
			
		}
	}

	parms.argv = argv;

	COM_InitArgv (parms.argc, parms.argv);

	TL_InitLanguages();
	//tprints are now allowed

	if (!GetCurrentDirectory (sizeof(cwd), cwd))
		Sys_Error ("Couldn't determine current directory");

	if (cwd[Q_strlen(cwd)-1] == '/' || cwd[Q_strlen(cwd)-1] == '\\')
		cwd[Q_strlen(cwd)-1] = 0;

	parms.basedir = cwd;
	parms.cachedir = NULL;

	parms.argc = com_argc;
	parms.argv = com_argv;

#ifndef CLIENTONLY
	if (COM_CheckParm ("-dedicated"))
	{
		isDedicated = true;
		hwnd_dialog=NULL;
		
		if (!Sys_InitTerminal())
			Sys_Error ("Couldn't allocate dedicated server console");
	}
	else
#endif
		hwnd_dialog = CreateDialog(hInstance, MAKEINTRESOURCE(IDD_DIALOG1), NULL, NULL);

	if (hwnd_dialog)
	{
		if (GetWindowRect (hwnd_dialog, &rect))
		{
			if (rect.left > (rect.top * 2))
			{
				SetWindowPos (hwnd_dialog, 0,
					(rect.left / 2) - ((rect.right - rect.left) / 2),
					rect.top, 0, 0,
					SWP_NOZORDER | SWP_NOSIZE);
			}
		}

		ShowWindow (hwnd_dialog, SW_SHOWDEFAULT);
		UpdateWindow (hwnd_dialog);
		SetForegroundWindow (hwnd_dialog);
	}

// 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
	parms.memsize = lpBuffer.dwAvailPhys;

	if (parms.memsize < MINIMUM_WIN_MEMORY)
		parms.memsize = MINIMUM_WIN_MEMORY;

	if (parms.memsize < (lpBuffer.dwTotalPhys >> 1))
		parms.memsize = lpBuffer.dwTotalPhys >> 1;

//	if (parms.memsize > MAXIMUM_WIN_MEMORY)
//		parms.memsize = MAXIMUM_WIN_MEMORY;

	if (COM_CheckParm ("-heapsize"))
	{
		t = COM_CheckParm("-heapsize") + 1;

		if (t < com_argc)
			parms.memsize = Q_atoi (com_argv[t]) * 1024;
	}
	else if (COM_CheckParm ("-mem"))
	{
		t = COM_CheckParm("-mem") + 1;

		if (t < com_argc)
			parms.memsize = Q_atoi (com_argv[t]) * 1024;
	}

	parms.membase = VirtualAlloc (NULL, parms.memsize, MEM_RESERVE, PAGE_NOACCESS);
//	parms.membase = malloc (parms.memsize);

	if (!parms.membase)
		Sys_Error ("Not enough memory free; check disk space\n");

#ifndef CLIENTONLY
	if (isDedicated)	//compleate denial to switch to anything else - many of the client structures are not initialized.
	{
		SV_Init (&parms);

		SV_Frame (0.1);

		oldtime = Sys_DoubleTime () - 0.1;
		while (1)
		{
			if (!isDedicated)
				Sys_Error("Dedicated was cleared");
			NET_Sleep(100, false);	

		// find time passed since last cycle
			newtime = Sys_DoubleTime ();
			time = newtime - oldtime;
			oldtime = newtime;
			
			SV_Frame (time);
		}
		return TRUE;
	}
#endif

	tevent = CreateEvent(NULL, FALSE, FALSE, NULL);

	if (!tevent)
		Sys_Error ("Couldn't create event");

	Sys_Init ();

// because sound is off until we become active
	S_BlockSound ();

	Sys_Printf ("Host_Init\n");
	Host_Init (&parms);

	Cvar_Register(&sys_disableWinKeys, "System vars");
	Cvar_Register(&sys_disableTaskSwitch, "System vars");

	oldtime = Sys_DoubleTime ();


//client console should now be initialized.

    /* main window message loop */
	while (1)
	{
		if (isDedicated)
		{
			NET_Sleep(100, false);

		// find time passed since last cycle
			newtime = Sys_DoubleTime ();
			time = newtime - oldtime;
			oldtime = newtime;
			
			SV_Frame (time);
		}
		else
		{
	// yield the CPU for a little while when paused, minimized, or not the focus
			if (((cl.paused && (!ActiveApp && !DDActive)) || Minimized || block_drawing) && !media_filmtype)
			{
				SleepUntilInput (PAUSE_SLEEP);
				scr_skipupdate = 1;		// no point in bothering to draw
			}
			else if (!ActiveApp && !DDActive && !media_filmtype)
			{
				SleepUntilInput (NOT_FOCUS_SLEEP);
			}

			newtime = Sys_DoubleTime ();
			time = newtime - oldtime;
			Host_Frame (time);
			oldtime = newtime;

			SetHookState(sys_disableWinKeys.value);

			Sleep(0);
		}
	}

    /* return success of application */
    return TRUE;
}





#ifdef NOASM //these couldn't be found... (it is a masm thing, right?)
void Sys_HighFPPrecision (void)
{
}

void Sys_LowFPPrecision (void)
{
}

void Sys_SetFPCW (void)
{
}

void MaskExceptions (void)
{
}
#endif