sys_win.c

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	Host_Shutdown();

	if (tevent)
		CloseHandle (tevent);

	if (isDedicated)
		FreeConsole ();

// shut down QHOST hooks if necessary
	DeinitConProc ();

	exit (0);
}


/*
================
Sys_FloatTime
================
*/
double Sys_FloatTime (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_FloatTime ();

	j = COM_CheckParm("-starttime");

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

	lastcurtime = curtime;
}


char *Sys_ConsoleInput (void)
{
	static char	text[256];
	static int		len;
	INPUT_RECORD	recs[1024];
	int		count;
	int		i, dummy;
	int		ch, numread, numevents;

	if (!isDedicated)
		return NULL;


	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;
						}
						else if (sc_return_on_enter)
						{
						// special case to allow exiting from the error handler on Enter
							text[0] = '\r';
							len = 0;
							return text;
						}

						break;

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

					default:
						if (ch >= ' ')
						{
							WriteFile(houtput, &ch, 1, &dummy, NULL);
							text[len] = ch;
							len = (len + 1) & 0xff;
						}

						break;

				}
			}
		}
	}

	return NULL;
}

void Sys_Sleep (void)
{
	Sleep (1);
}


void Sys_SendKeyEvents (void)
{
    MSG        msg;

	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))
			Sys_Quit ();

      	TranslateMessage (&msg);
      	DispatchMessage (&msg);
	}
}


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

 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	*empty_string = "";
HWND		hwnd_dialog;


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);

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

	if (cwd[strlen(cwd)-1] == '/')
		cwd[strlen(cwd)-1] = 0;

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

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

	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);

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

	isDedicated = (COM_CheckParm ("-dedicated") != 0);

	if (!isDedicated)
	{
		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;
	}

	parms.membase = malloc (parms.memsize);

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

	Sys_PageIn (parms.membase, parms.memsize);

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

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

	if (isDedicated)
	{
		if (!AllocConsole ())
		{
			Sys_Error ("Couldn't create dedicated server console");
		}

		hinput = GetStdHandle (STD_INPUT_HANDLE);
		houtput = GetStdHandle (STD_OUTPUT_HANDLE);

	// give QHOST a chance to hook into the console
		if ((t = COM_CheckParm ("-HFILE")) > 0)
		{
			if (t < com_argc)
				hFile = (HANDLE)Q_atoi (com_argv[t+1]);
		}

		if ((t = COM_CheckParm ("-HPARENT")) > 0)
		{
			if (t < com_argc)
				heventParent = (HANDLE)Q_atoi (com_argv[t+1]);
		}

		if ((t = COM_CheckParm ("-HCHILD")) > 0)
		{
			if (t < com_argc)
				heventChild = (HANDLE)Q_atoi (com_argv[t+1]);
		}

		InitConProc (hFile, heventParent, heventChild);
	}

	Sys_Init ();

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

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

	oldtime = Sys_FloatTime ();

    /* 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
		{
		// yield the CPU for a little while when paused, minimized, or not the focus
			if ((cl.paused && (!ActiveApp && !DDActive)) || Minimized || block_drawing)
			{
				SleepUntilInput (PAUSE_SLEEP);
				scr_skipupdate = 1;		// no point in bothering to draw
			}
			else if (!ActiveApp && !DDActive)
			{
				SleepUntilInput (NOT_FOCUS_SLEEP);
			}

			newtime = Sys_FloatTime ();
			time = newtime - oldtime;
		}

		Host_Frame (time);
		oldtime = newtime;
	}

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