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 #define WIN32_USETIMEGETTIME 0
  23
  24 #include "quakedef.h"
  25 #include "winquake.h"
  26 #include "errno.h"
  27 #include "resource.h"
  28 #include "conproc.h"
  29 #include "direct.h"
  30
  31 #define CONSOLE_ERROR_TIMEOUT   60.0    // # of seconds to wait on Sys_Error running
  32                                                                                 //  dedicated before exiting
  33 #define PAUSE_SLEEP             50                              // sleep time on pause or minimization
  34 #define NOT_FOCUS_SLEEP 20                              // sleep time when not focus
  35
  36 int                     starttime;
  37 qboolean        ActiveApp, Minimized;
  38
  39 static qboolean         sc_return_on_enter = false;
  40 HANDLE                          hinput, houtput;
  41
  42 static HANDLE   tevent;
  43 static HANDLE   hFile;
  44 static HANDLE   heventParent;
  45 static HANDLE   heventChild;
  46
  47 /*
  48 ===============================================================================
  49
  50 QFile IO
  51
  52 ===============================================================================
  53 */
  54
  55 // LordHavoc: 256 pak files (was 10)
  56 #define MAX_HANDLES             256
  57 QFile   *sys_handles[MAX_HANDLES];
  58
  59 int             findhandle (void)
  60 {
  61         int             i;
  62
  63         for (i=1 ; i<MAX_HANDLES ; i++)
  64                 if (!sys_handles[i])
  65                         return i;
  66         Sys_Error ("out of handles");
  67         return -1;
  68 }
  69
  70 /*
  71 ================
  72 Sys_FileLength
  73 ================
  74 */
  75 int Sys_FileLength (QFile *f)
  76 {
  77         int             pos;
  78         int             end;
  79
  80         pos = Qtell (f);
  81         Qseek (f, 0, SEEK_END);
  82         end = Qtell (f);
  83         Qseek (f, pos, SEEK_SET);
  84
  85         return end;
  86 }
  87
  88 int Sys_FileOpenRead (char *path, int *hndl)
  89 {
  90         QFile   *f;
  91         int             i, retval;
  92
  93         i = findhandle ();
  94
  95         f = Qopen(path, "rbz");
  96
  97         if (!f)
  98         {
  99                 *hndl = -1;
 100                 retval = -1;
 101         }
 102         else
 103         {
 104                 sys_handles[i] = f;
 105                 *hndl = i;
 106                 retval = Sys_FileLength(f);
 107         }
 108
 109         return retval;
 110 }
 111
 112 int Sys_FileOpenWrite (char *path)
 113 {
 114         QFile   *f;
 115         int             i;
 116
 117         i = findhandle ();
 118
 119         f = Qopen(path, "wb");
 120         if (!f)
 121         {
 122                 Con_Printf("Sys_FileOpenWrite: Error opening %s: %s", path, strerror(errno));
 123                 return 0;
 124         }
 125         sys_handles[i] = f;
 126
 127         return i;
 128 }
 129
 130 void Sys_FileClose (int handle)
 131 {
 132         Qclose (sys_handles[handle]);
 133         sys_handles[handle] = NULL;
 134 }
 135
 136 void Sys_FileSeek (int handle, int position)
 137 {
 138         Qseek (sys_handles[handle], position, SEEK_SET);
 139 }
 140
 141 int Sys_FileRead (int handle, void *dest, int count)
 142 {
 143         return Qread (sys_handles[handle], dest, count);
 144 }
 145
 146 int Sys_FileWrite (int handle, void *data, int count)
 147 {
 148         return Qwrite (sys_handles[handle], data, count);
 149 }
 150
 151 int     Sys_FileTime (char *path)
 152 {
 153         QFile   *f;
 154
 155         f = Qopen(path, "rb");
 156         if (f)
 157         {
 158                 Qclose(f);
 159                 return 1;
 160         }
 161
 162         return -1;
 163 }
 164
 165 void Sys_mkdir (char *path)
 166 {
 167         _mkdir (path);
 168 }
 169
 170
 171 /*
 172 ===============================================================================
 173
 174 SYSTEM IO
 175
 176 ===============================================================================
 177 */
 178
 179 void Sys_Error (char *error, ...)
 180 {
 181         va_list         argptr;
 182         char            text[1024], text2[1024];
 183         char            *text3 = "Press Enter to exit\n";
 184         char            *text4 = "***********************************\n";
 185         char            *text5 = "\n";
 186         DWORD           dummy;
 187         double          starttime;
 188         static int      in_sys_error0 = 0;
 189         static int      in_sys_error1 = 0;
 190         static int      in_sys_error2 = 0;
 191         static int      in_sys_error3 = 0;
 192
 193         if (!in_sys_error3)
 194                 in_sys_error3 = 1;
 195
 196         va_start (argptr, error);
 197         vsprintf (text, error, argptr);
 198         va_end (argptr);
 199
 200         if (cls.state == ca_dedicated)
 201         {
 202                 va_start (argptr, error);
 203                 vsprintf (text, error, argptr);
 204                 va_end (argptr);
 205
 206                 sprintf (text2, "ERROR: %s\n", text);
 207                 WriteFile (houtput, text5, strlen (text5), &dummy, NULL);
 208                 WriteFile (houtput, text4, strlen (text4), &dummy, NULL);
 209                 WriteFile (houtput, text2, strlen (text2), &dummy, NULL);
 210                 WriteFile (houtput, text3, strlen (text3), &dummy, NULL);
 211                 WriteFile (houtput, text4, strlen (text4), &dummy, NULL);
 212
 213
 214                 starttime = Sys_DoubleTime ();
 215                 sc_return_on_enter = true;      // so Enter will get us out of here
 216
 217                 while (!Sys_ConsoleInput () && ((Sys_DoubleTime () - starttime) < CONSOLE_ERROR_TIMEOUT))
 218                 {
 219                 }
 220         }
 221         else
 222         {
 223         // switch to windowed so the message box is visible, unless we already
 224         // tried that and failed
 225                 if (!in_sys_error0)
 226                 {
 227                         in_sys_error0 = 1;
 228                         VID_SetDefaultMode ();
 229                         MessageBox(NULL, text, "Quake Error", MB_OK | MB_SETFOREGROUND | MB_ICONSTOP);
 230                 }
 231                 else
 232                 {
 233                         MessageBox(NULL, text, "Double Quake Error", MB_OK | MB_SETFOREGROUND | MB_ICONSTOP);
 234                 }
 235         }
 236
 237         if (!in_sys_error1)
 238         {
 239                 in_sys_error1 = 1;
 240                 Host_Shutdown ();
 241         }
 242
 243 // shut down QHOST hooks if necessary
 244         if (!in_sys_error2)
 245         {
 246                 in_sys_error2 = 1;
 247                 DeinitConProc ();
 248         }
 249
 250         exit (1);
 251 }
 252
 253 void Sys_Quit (void)
 254 {
 255
 256         Host_Shutdown();
 257
 258         if (tevent)
 259                 CloseHandle (tevent);
 260
 261         if (cls.state == ca_dedicated)
 262                 FreeConsole ();
 263
 264 // shut down QHOST hooks if necessary
 265         DeinitConProc ();
 266
 267         exit (0);
 268 }
 269
 270
 271 /*
 272 ================
 273 Sys_DoubleTime
 274 ================
 275 */
 276 double Sys_DoubleTime (void)
 277 {
 278         // LordHavoc: note to people modifying this code, DWORD is specifically defined as an unsigned 32bit number, therefore the 65536.0 * 65536.0 is fine.
 279 #if WIN32_USETIMEGETTIME
 280         // timeGetTime
 281         // platform:
 282         // Windows 95/98/ME/NT/2000
 283         // features:
 284         // reasonable accuracy (millisecond)
 285         // issues:
 286         // none known
 287         static int first = true;
 288         static double oldtime = 0.0, basetime = 0.0, old = 0.0;
 289         double newtime, now;
 290
 291         now = (double) timeGetTime () + basetime;
 292
 293         if (first)
 294         {
 295                 first = false;
 296                 basetime = now;
 297                 now = 0;
 298         }
 299
 300         if (now < old)
 301         {
 302                 // wrapped
 303                 basetime += (65536.0 * 65536.0);
 304                 now += (65536.0 * 65536.0);
 305         }
 306         old = now;
 307
 308         newtime = now / 1000.0;
 309
 310         if (newtime < oldtime)
 311                 Sys_Error("Sys_DoubleTime: time running backwards??\n");
 312
 313         oldtime = newtime;
 314
 315         return newtime;
 316 #else
 317         // QueryPerformanceCounter
 318         // platform:
 319         // Windows 95/98/ME/NT/2000
 320         // features:
 321         // very accurate (CPU cycles)
 322         // known issues:
 323         // does not necessarily match realtime too well (tends to get faster and faster in win98)
 324         static int first = true;
 325         static double oldtime = 0.0, basetime = 0.0, timescale = 0.0;
 326         double newtime;
 327         LARGE_INTEGER PerformanceFreq;
 328         LARGE_INTEGER PerformanceCount;
 329
 330         if (first)
 331         {
 332                 if (!QueryPerformanceFrequency (&PerformanceFreq))
 333                         Sys_Error ("No hardware timer available");
 334
 335 #ifdef __BORLANDC__
 336                 timescale = 1.0 / ((double) PerformanceFreq.u.LowPart + (double) PerformanceFreq.u.HighPart * 65536.0 * 65536.0);
 337 #else
 338                 timescale = 1.0 / ((double) PerformanceFreq.LowPart + (double) PerformanceFreq.HighPart * 65536.0 * 65536.0);
 339 #endif
 340         }
 341
 342         QueryPerformanceCounter (&PerformanceCount);
 343
 344 #ifdef __BORLANDC__
 345         newtime = ((double) PerformanceCount.u.LowPart + (double) PerformanceCount.u.HighPart * 65536.0 * 65536.0) * timescale - basetime;
 346 #else
 347         newtime = ((double) PerformanceCount.LowPart + (double) PerformanceCount.HighPart * 65536.0 * 65536.0) * timescale - basetime;
 348 #endif
 349
 350         if (first)
 351         {
 352                 first = false;
 353                 basetime = newtime;
 354                 newtime = 0;
 355         }
 356
 357         if (newtime < oldtime)
 358                 Sys_Error("Sys_DoubleTime: time running backwards??\n");
 359
 360         oldtime = newtime;
 361
 362         return newtime;
 363 #endif
 364 }
 365
 366
 367 char *Sys_ConsoleInput (void)
 368 {
 369         static char text[256];
 370         static int len;
 371         INPUT_RECORD recs[1024];
 372         int ch;
 373         DWORD numread, numevents, dummy;
 374
 375         if (cls.state != ca_dedicated)
 376                 return NULL;
 377
 378
 379         for ( ;; )
 380         {
 381                 if (!GetNumberOfConsoleInputEvents (hinput, &numevents))
 382                         Sys_Error ("Error getting # of console events");
 383
 384                 if (numevents <= 0)
 385                         break;
 386
 387                 if (!ReadConsoleInput(hinput, recs, 1, &numread))
 388                         Sys_Error ("Error reading console input");
 389
 390                 if (numread != 1)
 391                         Sys_Error ("Couldn't read console input");
 392
 393                 if (recs[0].EventType == KEY_EVENT)
 394                 {
 395                         if (!recs[0].Event.KeyEvent.bKeyDown)
 396                         {
 397                                 ch = recs[0].Event.KeyEvent.uChar.AsciiChar;
 398
 399                                 switch (ch)
 400                                 {
 401                                         case '\r':
 402                                                 WriteFile(houtput, "\r\n", 2, &dummy, NULL);
 403
 404                                                 if (len)
 405                                                 {
 406                                                         text[len] = 0;
 407                                                         len = 0;
 408                                                         return text;
 409                                                 }
 410                                                 else if (sc_return_on_enter)
 411                                                 {
 412                                                 // special case to allow exiting from the error handler on Enter
 413                                                         text[0] = '\r';
 414                                                         len = 0;
 415                                                         return text;
 416                                                 }
 417
 418                                                 break;
 419
 420                                         case '\b':
 421                                                 WriteFile(houtput, "\b \b", 3, &dummy, NULL);
 422                                                 if (len)
 423                                                 {
 424                                                         len--;
 425                                                 }
 426                                                 break;
 427
 428                                         default:
 429                                                 if (ch >= ' ')
 430                                                 {
 431                                                         WriteFile(houtput, &ch, 1, &dummy, NULL);
 432                                                         text[len] = ch;
 433                                                         len = (len + 1) & 0xff;
 434                                                 }
 435
 436                                                 break;
 437
 438                                 }
 439                         }
 440                 }
 441         }
 442
 443         return NULL;
 444 }
 445
 446 void Sys_Sleep (void)
 447 {
 448         Sleep (1);
 449 }
 450
 451
 452 void Sys_SendKeyEvents (void)
 453 {
 454     MSG        msg;
 455
 456         while (PeekMessage (&msg, NULL, 0, 0, PM_NOREMOVE))
 457         {
 458         // we always update if there are any event, even if we're paused
 459                 scr_skipupdate = 0;
 460
 461                 if (!GetMessage (&msg, NULL, 0, 0))
 462                         Sys_Quit ();
 463
 464         TranslateMessage (&msg);
 465         DispatchMessage (&msg);
 466         }
 467 }
 468
 469
 470 /*
 471 ==============================================================================
 472
 473  WINDOWS CRAP
 474
 475 ==============================================================================
 476 */
 477
 478
 479 void SleepUntilInput (int time)
 480 {
 481         MsgWaitForMultipleObjects(1, &tevent, false, time, QS_ALLINPUT);
 482 }
 483
 484
 485 /*
 486 ==================
 487 WinMain
 488 ==================
 489 */
 490 HINSTANCE       global_hInstance;
 491 int                     global_nCmdShow;
 492 char            *argv[MAX_NUM_ARGVS];
 493 static char     *empty_string = "";
 494
 495 int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
 496 {
 497         double                  oldtime, newtime;
 498         MEMORYSTATUS    lpBuffer;
 499         static  char    cwd[1024];
 500         int                             t;
 501
 502     /* previous instances do not exist in Win32 */
 503     if (hPrevInstance)
 504         return 0;
 505
 506         global_hInstance = hInstance;
 507         global_nCmdShow = nCmdShow;
 508
 509         lpBuffer.dwLength = sizeof(MEMORYSTATUS);
 510         GlobalMemoryStatus (&lpBuffer);
 511
 512         if (!GetCurrentDirectory (sizeof(cwd), cwd))
 513                 Sys_Error ("Couldn't determine current directory");
 514
 515         if (cwd[strlen(cwd)-1] == '/')
 516                 cwd[strlen(cwd)-1] = 0;
 517
 518         memset(&host_parms, 0, sizeof(host_parms));
 519
 520         host_parms.basedir = cwd;
 521
 522         host_parms.argc = 1;
 523         argv[0] = empty_string;
 524
 525         while (*lpCmdLine && (host_parms.argc < MAX_NUM_ARGVS))
 526         {
 527                 while (*lpCmdLine && ((*lpCmdLine <= 32) || (*lpCmdLine > 126)))
 528                         lpCmdLine++;
 529
 530                 if (*lpCmdLine)
 531                 {
 532                         argv[host_parms.argc] = lpCmdLine;
 533                         host_parms.argc++;
 534
 535                         while (*lpCmdLine && ((*lpCmdLine > 32) && (*lpCmdLine <= 126)))
 536                                 lpCmdLine++;
 537
 538                         if (*lpCmdLine)
 539                         {
 540                                 *lpCmdLine = 0;
 541                                 lpCmdLine++;
 542                         }
 543
 544                 }
 545         }
 546
 547         host_parms.argv = argv;
 548
 549         COM_InitArgv (host_parms.argc, host_parms.argv);
 550
 551         host_parms.argc = com_argc;
 552         host_parms.argv = com_argv;
 553
 554         Sys_Shared_EarlyInit();
 555
 556         tevent = CreateEvent(NULL, false, false, NULL);
 557
 558         if (!tevent)
 559                 Sys_Error ("Couldn't create event");
 560
 561         // LordHavoc: can't check cls.state because it hasn't been initialized yet
 562         // if (cls.state == ca_dedicated)
 563         if (COM_CheckParm("-dedicated"))
 564         {
 565                 if (!AllocConsole ())
 566                         Sys_Error ("Couldn't create dedicated server console");
 567
 568                 hinput = GetStdHandle (STD_INPUT_HANDLE);
 569                 houtput = GetStdHandle (STD_OUTPUT_HANDLE);
 570
 571         // give QHOST a chance to hook into the console
 572                 if ((t = COM_CheckParm ("-HFILE")) > 0)
 573                 {
 574                         if (t < com_argc)
 575                                 hFile = (HANDLE)atoi (com_argv[t+1]);
 576                 }
 577
 578                 if ((t = COM_CheckParm ("-HPARENT")) > 0)
 579                 {
 580                         if (t < com_argc)
 581                                 heventParent = (HANDLE)atoi (com_argv[t+1]);
 582                 }
 583
 584                 if ((t = COM_CheckParm ("-HCHILD")) > 0)
 585                 {
 586                         if (t < com_argc)
 587                                 heventChild = (HANDLE)atoi (com_argv[t+1]);
 588                 }
 589
 590                 InitConProc (hFile, heventParent, heventChild);
 591         }
 592
 593 // because sound is off until we become active
 594         S_BlockSound ();
 595
 596 #if WIN32_USETIMEGETTIME
 597         // make sure the timer is high precision, otherwise NT gets 18ms resolution
 598         // LordHavoc:
 599         // Windows 2000 Advanced Server (and possibly other versions)
 600         // apparently have a broken timer, because it runs at more like 10x speed
 601         // if this isn't used, heh
 602         timeBeginPeriod (1);
 603 #endif
 604
 605         Host_Init ();
 606
 607         Sys_Shared_LateInit();
 608
 609         oldtime = Sys_DoubleTime ();
 610
 611     /* main window message loop */
 612         while (1)
 613         {
 614                 if (cls.state != ca_dedicated)
 615                 {
 616                 // yield the CPU for a little while when paused, minimized, or not the focus
 617                         if ((cl.paused && !ActiveApp) || Minimized)
 618                         {
 619                                 SleepUntilInput (PAUSE_SLEEP);
 620                                 scr_skipupdate = 1;             // no point in bothering to draw
 621                         }
 622                         else if (!ActiveApp)
 623                                 SleepUntilInput (NOT_FOCUS_SLEEP);
 624                 }
 625
 626                 newtime = Sys_DoubleTime ();
 627                 Host_Frame (newtime - oldtime);
 628                 oldtime = newtime;
 629         }
 630
 631     /* return success of application */
 632     return true;
 633 }
 634