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