sys_win.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20 // sys_win.c -- Win32 system interface code
  21
  22 #include "quakedef.h"
  23 #include "winquake.h"
  24 #include "errno.h"
  25 #include "resource.h"
  26 #include "conproc.h"
  27 #include "direct.h"
  28
  29 // LordHavoc: raised min to 24mb (was 8.5mb)
  30 #define MINIMUM_WIN_MEMORY              0x1800000
  31 // LordHavoc: raised max to 24mb (was 16mb)
  32 #define MAXIMUM_WIN_MEMORY              0x1800000
  33
  34 #define CONSOLE_ERROR_TIMEOUT   60.0    // # of seconds to wait on Sys_Error running
  35                                                                                 //  dedicated before exiting
  36 #define PAUSE_SLEEP             50                              // sleep time on pause or minimization
  37 #define NOT_FOCUS_SLEEP 20                              // sleep time when not focus
  38
  39 int                     starttime;
  40 qboolean        ActiveApp, Minimized;
  41 qboolean        WinNT;
  42
  43 static double           pfreq;
  44 static double           curtime = 0.0;
  45 static double           lastcurtime = 0.0;
  46 static int                      lowshift;
  47 qboolean                        isDedicated;
  48 static qboolean         sc_return_on_enter = false;
  49 HANDLE                          hinput, houtput;
  50
  51 static char                     *tracking_tag = "Clams & Mooses";
  52
  53 static HANDLE   tevent;
  54 static HANDLE   hFile;
  55 static HANDLE   heventParent;
  56 static HANDLE   heventChild;
  57
  58 void MaskExceptions (void);
  59 void Sys_InitFloatTime (void);
  60 void Sys_PushFPCW_SetHigh (void);
  61 void Sys_PopFPCW (void);
  62
  63 volatile int                                    sys_checksum;
  64
  65
  66 /*
  67 ================
  68 Sys_PageIn
  69 ================
  70 */
  71 void Sys_PageIn (void *ptr, int size)
  72 {
  73         byte    *x;
  74         int             m, n;
  75
  76 // touch all the memory to make sure it's there. The 16-page skip is to
  77 // keep Win 95 from thinking we're trying to page ourselves in (we are
  78 // doing that, of course, but there's no reason we shouldn't)
  79         x = (byte *)ptr;
  80
  81         for (n=0 ; n<4 ; n++)
  82         {
  83                 for (m=0 ; m<(size - 16 * 0x1000) ; m += 4)
  84                 {
  85                         sys_checksum += *(int *)&x[m];
  86                         sys_checksum += *(int *)&x[m + 16 * 0x1000];
  87                 }
  88         }
  89 }
  90
  91
  92 /*
  93 ===============================================================================
  94
  95 FILE IO
  96
  97 ===============================================================================
  98 */
  99
 100 // LordHavoc: 256 pak files (was 10)
 101 #define MAX_HANDLES             256
 102 FILE    *sys_handles[MAX_HANDLES];
 103
 104 int             findhandle (void)
 105 {
 106         int             i;
 107
 108         for (i=1 ; i<MAX_HANDLES ; i++)
 109                 if (!sys_handles[i])
 110                         return i;
 111         Sys_Error ("out of handles");
 112         return -1;
 113 }
 114
 115 /*
 116 ================
 117 filelength
 118 ================
 119 */
 120 int filelength (FILE *f)
 121 {
 122         int             pos;
 123         int             end;
 124         int             t;
 125
 126         t = VID_ForceUnlockedAndReturnState ();
 127
 128         pos = ftell (f);
 129         fseek (f, 0, SEEK_END);
 130         end = ftell (f);
 131         fseek (f, pos, SEEK_SET);
 132
 133         VID_ForceLockState (t);
 134
 135         return end;
 136 }
 137
 138 int Sys_FileOpenRead (char *path, int *hndl)
 139 {
 140         FILE    *f;
 141         int             i, retval;
 142         int             t;
 143
 144         t = VID_ForceUnlockedAndReturnState ();
 145
 146         i = findhandle ();
 147
 148         f = fopen(path, "rb");
 149
 150         if (!f)
 151         {
 152                 *hndl = -1;
 153                 retval = -1;
 154         }
 155         else
 156         {
 157                 sys_handles[i] = f;
 158                 *hndl = i;
 159                 retval = filelength(f);
 160         }
 161
 162         VID_ForceLockState (t);
 163
 164         return retval;
 165 }
 166
 167 int Sys_FileOpenWrite (char *path)
 168 {
 169         FILE    *f;
 170         int             i;
 171         int             t;
 172
 173         t = VID_ForceUnlockedAndReturnState ();
 174
 175         i = findhandle ();
 176
 177         f = fopen(path, "wb");
 178         if (!f)
 179                 Sys_Error ("Error opening %s: %s", path,strerror(errno));
 180         sys_handles[i] = f;
 181
 182         VID_ForceLockState (t);
 183
 184         return i;
 185 }
 186
 187 void Sys_FileClose (int handle)
 188 {
 189         int             t;
 190
 191         t = VID_ForceUnlockedAndReturnState ();
 192         fclose (sys_handles[handle]);
 193         sys_handles[handle] = NULL;
 194         VID_ForceLockState (t);
 195 }
 196
 197 void Sys_FileSeek (int handle, int position)
 198 {
 199         int             t;
 200
 201         t = VID_ForceUnlockedAndReturnState ();
 202         fseek (sys_handles[handle], position, SEEK_SET);
 203         VID_ForceLockState (t);
 204 }
 205
 206 int Sys_FileRead (int handle, void *dest, int count)
 207 {
 208         int             t, x;
 209
 210         t = VID_ForceUnlockedAndReturnState ();
 211         x = fread (dest, 1, count, sys_handles[handle]);
 212         VID_ForceLockState (t);
 213         return x;
 214 }
 215
 216 int Sys_FileWrite (int handle, void *data, int count)
 217 {
 218         int             t, x;
 219
 220         t = VID_ForceUnlockedAndReturnState ();
 221         x = fwrite (data, 1, count, sys_handles[handle]);
 222         VID_ForceLockState (t);
 223         return x;
 224 }
 225
 226 int     Sys_FileTime (char *path)
 227 {
 228         FILE    *f;
 229         int             t, retval;
 230
 231         t = VID_ForceUnlockedAndReturnState ();
 232
 233         f = fopen(path, "rb");
 234
 235         if (f)
 236         {
 237                 fclose(f);
 238                 retval = 1;
 239         }
 240         else
 241         {
 242                 retval = -1;
 243         }
 244
 245         VID_ForceLockState (t);
 246         return retval;
 247 }
 248
 249 void Sys_mkdir (char *path)
 250 {
 251         _mkdir (path);
 252 }
 253
 254
 255 /*
 256 ===============================================================================
 257
 258 SYSTEM IO
 259
 260 ===============================================================================
 261 */
 262
 263 /*
 264 ================
 265 Sys_MakeCodeWriteable
 266 ================
 267 */
 268 void Sys_MakeCodeWriteable (unsigned long startaddr, unsigned long length)
 269 {
 270         DWORD  flOldProtect;
 271
 272         if (!VirtualProtect((LPVOID)startaddr, length, PAGE_READWRITE, &flOldProtect))
 273                 Sys_Error("Protection change failed\n");
 274 }
 275
 276
 277 //#ifndef _M_IX86
 278
 279 void Sys_SetFPCW (void)
 280 {
 281 }
 282
 283 void Sys_PushFPCW_SetHigh (void)
 284 {
 285 }
 286
 287 void Sys_PopFPCW (void)
 288 {
 289 }
 290
 291 void MaskExceptions (void)
 292 {
 293 }
 294
 295 //#endif
 296
 297 /*
 298 ================
 299 Sys_Init
 300 ================
 301 */
 302 void Sys_Init (void)
 303 {
 304         LARGE_INTEGER   PerformanceFreq;
 305         unsigned int    lowpart, highpart;
 306         OSVERSIONINFO   vinfo;
 307
 308         MaskExceptions ();
 309         Sys_SetFPCW ();
 310
 311         if (!QueryPerformanceFrequency (&PerformanceFreq))
 312                 Sys_Error ("No hardware timer available");
 313
 314 // get 32 out of the 64 time bits such that we have around
 315 // 1 microsecond resolution
 316         lowpart = (unsigned int)PerformanceFreq.LowPart;
 317         highpart = (unsigned int)PerformanceFreq.HighPart;
 318         lowshift = 0;
 319
 320         while (highpart || (lowpart > 2000000.0))
 321         {
 322                 lowshift++;
 323                 lowpart >>= 1;
 324                 lowpart |= (highpart & 1) << 31;
 325                 highpart >>= 1;
 326         }
 327
 328         pfreq = 1.0 / (double)lowpart;
 329
 330         Sys_InitFloatTime ();
 331
 332         vinfo.dwOSVersionInfoSize = sizeof(vinfo);
 333
 334         if (!GetVersionEx (&vinfo))
 335                 Sys_Error ("Couldn't get OS info");
 336
 337         if ((vinfo.dwMajorVersion < 4) ||
 338                 (vinfo.dwPlatformId == VER_PLATFORM_WIN32s))
 339         {
 340                 Sys_Error ("WinQuake requires at least Win95 or NT 4.0");
 341         }
 342
 343         if (vinfo.dwPlatformId == VER_PLATFORM_WIN32_NT)
 344                 WinNT = true;
 345         else
 346                 WinNT = false;
 347 }
 348
 349
 350 void Sys_Error (char *error, ...)
 351 {
 352         va_list         argptr;
 353         char            text[1024], text2[1024];
 354         char            *text3 = "Press Enter to exit\n";
 355         char            *text4 = "***********************************\n";
 356         char            *text5 = "\n";
 357         DWORD           dummy;
 358         double          starttime;
 359         static int      in_sys_error0 = 0;
 360         static int      in_sys_error1 = 0;
 361         static int      in_sys_error2 = 0;
 362         static int      in_sys_error3 = 0;
 363
 364         if (!in_sys_error3)
 365         {
 366                 in_sys_error3 = 1;
 367                 VID_ForceUnlockedAndReturnState ();
 368         }
 369
 370         va_start (argptr, error);
 371         vsprintf (text, error, argptr);
 372         va_end (argptr);
 373
 374         if (isDedicated)
 375         {
 376                 va_start (argptr, error);
 377                 vsprintf (text, error, argptr);
 378                 va_end (argptr);
 379
 380                 sprintf (text2, "ERROR: %s\n", text);
 381                 WriteFile (houtput, text5, strlen (text5), &dummy, NULL);
 382                 WriteFile (houtput, text4, strlen (text4), &dummy, NULL);
 383                 WriteFile (houtput, text2, strlen (text2), &dummy, NULL);
 384                 WriteFile (houtput, text3, strlen (text3), &dummy, NULL);
 385                 WriteFile (houtput, text4, strlen (text4), &dummy, NULL);
 386
 387
 388                 starttime = Sys_FloatTime ();
 389                 sc_return_on_enter = true;      // so Enter will get us out of here
 390
 391                 while (!Sys_ConsoleInput () &&
 392                                 ((Sys_FloatTime () - starttime) < CONSOLE_ERROR_TIMEOUT))
 393                 {
 394                 }
 395         }
 396         else
 397         {
 398         // switch to windowed so the message box is visible, unless we already
 399         // tried that and failed
 400                 if (!in_sys_error0)
 401                 {
 402                         in_sys_error0 = 1;
 403                         VID_SetDefaultMode ();
 404                         MessageBox(NULL, text, "Quake Error",
 405                                            MB_OK | MB_SETFOREGROUND | MB_ICONSTOP);
 406                 }
 407                 else
 408                 {
 409                         MessageBox(NULL, text, "Double Quake Error",
 410                                            MB_OK | MB_SETFOREGROUND | MB_ICONSTOP);
 411                 }
 412         }
 413
 414         if (!in_sys_error1)
 415         {
 416                 in_sys_error1 = 1;
 417                 Host_Shutdown ();
 418         }
 419
 420 // shut down QHOST hooks if necessary
 421         if (!in_sys_error2)
 422         {
 423                 in_sys_error2 = 1;
 424                 DeinitConProc ();
 425         }
 426
 427         exit (1);
 428 }
 429
 430 void Sys_Printf (char *fmt, ...)
 431 {
 432         va_list         argptr;
 433         char            text[1024];
 434         DWORD           dummy;
 435
 436         if (isDedicated)
 437         {
 438                 va_start (argptr,fmt);
 439                 vsprintf (text, fmt, argptr);
 440                 va_end (argptr);
 441
 442                 WriteFile(houtput, text, strlen (text), &dummy, NULL);
 443         }
 444 }
 445
 446 void Sys_Quit (void)
 447 {
 448
 449         VID_ForceUnlockedAndReturnState ();
 450
 451         Host_Shutdown();
 452
 453         if (tevent)
 454                 CloseHandle (tevent);
 455
 456         if (isDedicated)
 457                 FreeConsole ();
 458
 459 // shut down QHOST hooks if necessary
 460         DeinitConProc ();
 461
 462         exit (0);
 463 }
 464
 465
 466 /*
 467 ================
 468 Sys_FloatTime
 469 ================
 470 */
 471 double Sys_FloatTime (void)
 472 {
 473         static int                      sametimecount;
 474         static unsigned int     oldtime;
 475         static int                      first = 1;
 476         LARGE_INTEGER           PerformanceCount;
 477         unsigned int            temp, t2;
 478         double                          time;
 479
 480         Sys_PushFPCW_SetHigh ();
 481
 482         QueryPerformanceCounter (&PerformanceCount);
 483
 484         temp = ((unsigned int)PerformanceCount.LowPart >> lowshift) |
 485                    ((unsigned int)PerformanceCount.HighPart << (32 - lowshift));
 486
 487         if (first)
 488         {
 489                 oldtime = temp;
 490                 first = 0;
 491         }
 492         else
 493         {
 494         // check for turnover or backward time
 495                 if ((temp <= oldtime) && ((oldtime - temp) < 0x10000000))
 496                 {
 497                         oldtime = temp; // so we can't get stuck
 498                 }
 499                 else
 500                 {
 501                         t2 = temp - oldtime;
 502
 503                         time = (double)t2 * pfreq;
 504                         oldtime = temp;
 505
 506                         curtime += time;
 507
 508                         if (curtime == lastcurtime)
 509                         {
 510                                 sametimecount++;
 511
 512                                 if (sametimecount > 100000)
 513                                 {
 514                                         curtime += 1.0;
 515                                         sametimecount = 0;
 516                                 }
 517                         }
 518                         else
 519                         {
 520                                 sametimecount = 0;
 521                         }
 522
 523                         lastcurtime = curtime;
 524                 }
 525         }
 526
 527         Sys_PopFPCW ();
 528
 529     return curtime;
 530 }
 531
 532
 533 /*
 534 ================
 535 Sys_InitFloatTime
 536 ================
 537 */
 538 void Sys_InitFloatTime (void)
 539 {
 540         int             j;
 541
 542         Sys_FloatTime ();
 543
 544         j = COM_CheckParm("-starttime");
 545
 546         if (j)
 547         {
 548                 curtime = (double) (atof(com_argv[j+1]));
 549         }
 550         else
 551         {
 552                 curtime = 0.0;
 553         }
 554
 555         lastcurtime = curtime;
 556 }
 557
 558
 559 char *Sys_ConsoleInput (void)
 560 {
 561         static char     text[256];
 562         static int              len;
 563         INPUT_RECORD    recs[1024];
 564         int             dummy;
 565         int             ch, numread, numevents;
 566
 567         if (!isDedicated)
 568                 return NULL;
 569
 570
 571         for ( ;; )
 572         {
 573                 if (!GetNumberOfConsoleInputEvents (hinput, &numevents))
 574                         Sys_Error ("Error getting # of console events");
 575
 576                 if (numevents <= 0)
 577                         break;
 578
 579                 if (!ReadConsoleInput(hinput, recs, 1, &numread))
 580                         Sys_Error ("Error reading console input");
 581
 582                 if (numread != 1)
 583                         Sys_Error ("Couldn't read console input");
 584
 585                 if (recs[0].EventType == KEY_EVENT)
 586                 {
 587                         if (!recs[0].Event.KeyEvent.bKeyDown)
 588                         {
 589                                 ch = recs[0].Event.KeyEvent.uChar.AsciiChar;
 590
 591                                 switch (ch)
 592                                 {
 593                                         case '\r':
 594                                                 WriteFile(houtput, "\r\n", 2, &dummy, NULL);
 595
 596                                                 if (len)
 597                                                 {
 598                                                         text[len] = 0;
 599                                                         len = 0;
 600                                                         return text;
 601                                                 }
 602                                                 else if (sc_return_on_enter)
 603                                                 {
 604                                                 // special case to allow exiting from the error handler on Enter
 605                                                         text[0] = '\r';
 606                                                         len = 0;
 607                                                         return text;
 608                                                 }
 609
 610                                                 break;
 611
 612                                         case '\b':
 613                                                 WriteFile(houtput, "\b \b", 3, &dummy, NULL);
 614                                                 if (len)
 615                                                 {
 616                                                         len--;
 617                                                 }
 618                                                 break;
 619
 620                                         default:
 621                                                 if (ch >= ' ')
 622                                                 {
 623                                                         WriteFile(houtput, &ch, 1, &dummy, NULL);
 624                                                         text[len] = ch;
 625                                                         len = (len + 1) & 0xff;
 626                                                 }
 627
 628                                                 break;
 629
 630                                 }
 631                         }
 632                 }
 633         }
 634
 635         return NULL;
 636 }
 637
 638 void Sys_Sleep (void)
 639 {
 640         Sleep (1);
 641 }
 642
 643
 644 void Sys_SendKeyEvents (void)
 645 {
 646     MSG        msg;
 647
 648         while (PeekMessage (&msg, NULL, 0, 0, PM_NOREMOVE))
 649         {
 650         // we always update if there are any event, even if we're paused
 651                 scr_skipupdate = 0;
 652
 653                 if (!GetMessage (&msg, NULL, 0, 0))
 654                         Sys_Quit ();
 655
 656         TranslateMessage (&msg);
 657         DispatchMessage (&msg);
 658         }
 659 }
 660
 661
 662 /*
 663 ==============================================================================
 664
 665  WINDOWS CRAP
 666
 667 ==============================================================================
 668 */
 669
 670
 671 /*
 672 ==================
 673 WinMain
 674 ==================
 675 */
 676 void SleepUntilInput (int time)
 677 {
 678
 679         MsgWaitForMultipleObjects(1, &tevent, FALSE, time, QS_ALLINPUT);
 680 }
 681
 682
 683 extern cvar_t maxfps;
 684
 685 /*
 686 ==================
 687 WinMain
 688 ==================
 689 */
 690 HINSTANCE       global_hInstance;
 691 int                     global_nCmdShow;
 692 char            *argv[MAX_NUM_ARGVS];
 693 static char     *empty_string = "";
 694 HWND            hwnd_dialog;
 695
 696
 697 int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
 698 {
 699         quakeparms_t    parms;
 700         double                  time, oldtime, newtime, timediff;
 701         MEMORYSTATUS    lpBuffer;
 702         static  char    cwd[1024];
 703         int                             t;
 704         RECT                    rect;
 705
 706     /* previous instances do not exist in Win32 */
 707     if (hPrevInstance)
 708         return 0;
 709
 710         global_hInstance = hInstance;
 711         global_nCmdShow = nCmdShow;
 712
 713         lpBuffer.dwLength = sizeof(MEMORYSTATUS);
 714         GlobalMemoryStatus (&lpBuffer);
 715
 716         if (!GetCurrentDirectory (sizeof(cwd), cwd))
 717                 Sys_Error ("Couldn't determine current directory");
 718
 719         if (cwd[strlen(cwd)-1] == '/')
 720                 cwd[strlen(cwd)-1] = 0;
 721
 722         parms.basedir = cwd;
 723         parms.cachedir = NULL;
 724
 725         parms.argc = 1;
 726         argv[0] = empty_string;
 727
 728         while (*lpCmdLine && (parms.argc < MAX_NUM_ARGVS))
 729         {
 730                 while (*lpCmdLine && ((*lpCmdLine <= 32) || (*lpCmdLine > 126)))
 731                         lpCmdLine++;
 732
 733                 if (*lpCmdLine)
 734                 {
 735                         argv[parms.argc] = lpCmdLine;
 736                         parms.argc++;
 737
 738                         while (*lpCmdLine && ((*lpCmdLine > 32) && (*lpCmdLine <= 126)))
 739                                 lpCmdLine++;
 740
 741                         if (*lpCmdLine)
 742                         {
 743                                 *lpCmdLine = 0;
 744                                 lpCmdLine++;
 745                         }
 746
 747                 }
 748         }
 749
 750         parms.argv = argv;
 751
 752         COM_InitArgv (parms.argc, parms.argv);
 753
 754         parms.argc = com_argc;
 755         parms.argv = com_argv;
 756
 757         isDedicated = (COM_CheckParm ("-dedicated") != 0);
 758
 759         if (!isDedicated)
 760         {
 761                 hwnd_dialog = CreateDialog(hInstance, MAKEINTRESOURCE(IDD_DIALOG1), NULL, NULL);
 762
 763                 if (hwnd_dialog)
 764                 {
 765                         if (GetWindowRect (hwnd_dialog, &rect))
 766                         {
 767                                 if (rect.left > (rect.top * 2))
 768                                 {
 769                                         SetWindowPos (hwnd_dialog, 0,
 770                                                 (rect.left / 2) - ((rect.right - rect.left) / 2),
 771                                                 rect.top, 0, 0,
 772                                                 SWP_NOZORDER | SWP_NOSIZE);
 773                                 }
 774                         }
 775
 776                         ShowWindow (hwnd_dialog, SW_SHOWDEFAULT);
 777                         UpdateWindow (hwnd_dialog);
 778                         SetForegroundWindow (hwnd_dialog);
 779                 }
 780         }
 781
 782 // take the greater of all the available memory or half the total memory,
 783 // but at least 8 Mb and no more than 16 Mb, unless they explicitly
 784 // request otherwise
 785         parms.memsize = lpBuffer.dwAvailPhys;
 786
 787         if (parms.memsize < MINIMUM_WIN_MEMORY)
 788                 parms.memsize = MINIMUM_WIN_MEMORY;
 789
 790         if (parms.memsize < (lpBuffer.dwTotalPhys >> 1))
 791                 parms.memsize = lpBuffer.dwTotalPhys >> 1;
 792
 793         if (parms.memsize > MAXIMUM_WIN_MEMORY)
 794                 parms.memsize = MAXIMUM_WIN_MEMORY;
 795
 796         if (COM_CheckParm ("-heapsize"))
 797         {
 798                 t = COM_CheckParm("-heapsize") + 1;
 799
 800                 if (t < com_argc)
 801                         parms.memsize = atoi (com_argv[t]) * 1024;
 802         }
 803
 804         if (COM_CheckParm ("-mem"))
 805         {
 806                 t = COM_CheckParm("-mem") + 1;
 807
 808                 if (t < com_argc)
 809                         parms.memsize = atoi (com_argv[t]) * 1048576;
 810         }
 811
 812         if (COM_CheckParm ("-winmem"))
 813         {
 814                 t = COM_CheckParm("-winmem") + 1;
 815
 816                 if (t < com_argc)
 817                         parms.memsize = atoi (com_argv[t]) * 1048576;
 818         }
 819
 820         parms.membase = malloc (parms.memsize);
 821
 822         if (!parms.membase)
 823                 Sys_Error ("Not enough memory free; check disk space\n");
 824
 825         Sys_PageIn (parms.membase, parms.memsize);
 826
 827         tevent = CreateEvent(NULL, FALSE, FALSE, NULL);
 828
 829         if (!tevent)
 830                 Sys_Error ("Couldn't create event");
 831
 832         if (isDedicated)
 833         {
 834                 if (!AllocConsole ())
 835                 {
 836                         Sys_Error ("Couldn't create dedicated server console");
 837                 }
 838
 839                 hinput = GetStdHandle (STD_INPUT_HANDLE);
 840                 houtput = GetStdHandle (STD_OUTPUT_HANDLE);
 841
 842         // give QHOST a chance to hook into the console
 843                 if ((t = COM_CheckParm ("-HFILE")) > 0)
 844                 {
 845                         if (t < com_argc)
 846                                 hFile = (HANDLE)atoi (com_argv[t+1]);
 847                 }
 848
 849                 if ((t = COM_CheckParm ("-HPARENT")) > 0)
 850                 {
 851                         if (t < com_argc)
 852                                 heventParent = (HANDLE)atoi (com_argv[t+1]);
 853                 }
 854
 855                 if ((t = COM_CheckParm ("-HCHILD")) > 0)
 856                 {
 857                         if (t < com_argc)
 858                                 heventChild = (HANDLE)atoi (com_argv[t+1]);
 859                 }
 860
 861                 InitConProc (hFile, heventParent, heventChild);
 862         }
 863
 864         Sys_Init ();
 865
 866 // because sound is off until we become active
 867         S_BlockSound ();
 868
 869         Sys_Printf ("Host_Init\n");
 870         Host_Init (&parms);
 871
 872         oldtime = Sys_FloatTime ();
 873
 874     /* main window message loop */
 875         while (1)
 876         {
 877                 if (maxfps.value < 5) // LordHavoc: sanity checking
 878                         maxfps.value = 5;
 879                 if (maxfps.value > 1000) // LordHavoc: sanity checking
 880                         maxfps.value = 1000;
 881                 if (isDedicated)
 882                 {
 883                         newtime = Sys_FloatTime ();
 884                         time = newtime - oldtime;
 885
 886                         while (time < sys_ticrate.value )
 887                         {
 888                                 Sys_Sleep();
 889                                 newtime = Sys_FloatTime ();
 890                                 time = newtime - oldtime;
 891                         }
 892                 }
 893                 else
 894                 {
 895                 // yield the CPU for a little while when paused, minimized, or not the focus
 896                         if ((cl.paused && (!ActiveApp && !DDActive)) || Minimized)
 897                         {
 898                                 SleepUntilInput (PAUSE_SLEEP);
 899                                 scr_skipupdate = 1;             // no point in bothering to draw
 900                         }
 901                         else if (!ActiveApp && !DDActive)
 902                         {
 903                                 SleepUntilInput (NOT_FOCUS_SLEEP);
 904                         }
 905                         else if (!cls.timedemo && time < (timediff = 1.0 / maxfps.value))
 906                         {
 907                                 newtime = Sys_FloatTime ();
 908                                 time = newtime - oldtime;
 909
 910                                 while (time < timediff)
 911                                 {
 912                                         Sys_Sleep();
 913                                         newtime = Sys_FloatTime ();
 914                                         time = newtime - oldtime;
 915                                 }
 916                         }
 917
 918                         newtime = Sys_FloatTime ();
 919                         time = newtime - oldtime;
 920                 }
 921
 922                 Host_Frame (time);
 923                 oldtime = newtime;
 924         }
 925
 926     /* return success of application */
 927     return TRUE;
 928 }
 929