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 cvar_t sys_usetimegettime = {CVAR_SAVE, "sys_usetimegettime", "1"};
  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
  40 static qboolean         sc_return_on_enter = false;
  41 HANDLE                          hinput, houtput;
  42
  43 static HANDLE   tevent;
  44 static HANDLE   hFile;
  45 static HANDLE   heventParent;
  46 static HANDLE   heventChild;
  47
  48 /*
  49 ===============================================================================
  50
  51 QFile IO
  52
  53 ===============================================================================
  54 */
  55
  56 // LordHavoc: 256 pak files (was 10)
  57 #define MAX_HANDLES             256
  58 QFile   *sys_handles[MAX_HANDLES];
  59
  60 int             findhandle (void)
  61 {
  62         int             i;
  63
  64         for (i=1 ; i<MAX_HANDLES ; i++)
  65                 if (!sys_handles[i])
  66                         return i;
  67         Sys_Error ("out of handles");
  68         return -1;
  69 }
  70
  71 /*
  72 ================
  73 Sys_FileLength
  74 ================
  75 */
  76 int Sys_FileLength (QFile *f)
  77 {
  78         int             pos;
  79         int             end;
  80
  81         pos = Qtell (f);
  82         Qseek (f, 0, SEEK_END);
  83         end = Qtell (f);
  84         Qseek (f, pos, SEEK_SET);
  85
  86         return end;
  87 }
  88
  89 int Sys_FileOpenRead (char *path, int *hndl)
  90 {
  91         QFile   *f;
  92         int             i, retval;
  93
  94         i = findhandle ();
  95
  96         f = Qopen(path, "rbz");
  97
  98         if (!f)
  99         {
 100                 *hndl = -1;
 101                 retval = -1;
 102         }
 103         else
 104         {
 105                 sys_handles[i] = f;
 106                 *hndl = i;
 107                 retval = Sys_FileLength(f);
 108         }
 109
 110         return retval;
 111 }
 112
 113 int Sys_FileOpenWrite (char *path)
 114 {
 115         QFile   *f;
 116         int             i;
 117
 118         i = findhandle ();
 119
 120         f = Qopen(path, "wb");
 121         if (!f)
 122         {
 123                 Con_Printf("Sys_FileOpenWrite: Error opening %s: %s", path, strerror(errno));
 124                 return 0;
 125         }
 126         sys_handles[i] = f;
 127
 128         return i;
 129 }
 130
 131 void Sys_FileClose (int handle)
 132 {
 133         Qclose (sys_handles[handle]);
 134         sys_handles[handle] = NULL;
 135 }
 136
 137 void Sys_FileSeek (int handle, int position)
 138 {
 139         Qseek (sys_handles[handle], position, SEEK_SET);
 140 }
 141
 142 int Sys_FileRead (int handle, void *dest, int count)
 143 {
 144         return Qread (sys_handles[handle], dest, count);
 145 }
 146
 147 int Sys_FileWrite (int handle, void *data, int count)
 148 {
 149         return Qwrite (sys_handles[handle], data, count);
 150 }
 151
 152 int     Sys_FileTime (char *path)
 153 {
 154         QFile   *f;
 155
 156         f = Qopen(path, "rb");
 157         if (f)
 158         {
 159                 Qclose(f);
 160                 return 1;
 161         }
 162
 163         return -1;
 164 }
 165
 166 void Sys_mkdir (char *path)
 167 {
 168         _mkdir (path);
 169 }
 170
 171
 172 /*
 173 ===============================================================================
 174
 175 SYSTEM IO
 176
 177 ===============================================================================
 178 */
 179
 180 void SleepUntilInput (int time);
 181
 182 void Sys_Error (char *error, ...)
 183 {
 184         va_list         argptr;
 185         char            text[1024], text2[1024];
 186         char            *text3 = "Press Enter to exit\n";
 187         char            *text4 = "***********************************\n";
 188         char            *text5 = "\n";
 189         DWORD           dummy;
 190         double          starttime;
 191         static int      in_sys_error0 = 0;
 192         static int      in_sys_error1 = 0;
 193         static int      in_sys_error2 = 0;
 194         static int      in_sys_error3 = 0;
 195
 196         if (!in_sys_error3)
 197                 in_sys_error3 = 1;
 198
 199         va_start (argptr, error);
 200         vsprintf (text, error, argptr);
 201         va_end (argptr);
 202
 203         if (cls.state == ca_dedicated)
 204         {
 205                 va_start (argptr, error);
 206                 vsprintf (text, error, argptr);
 207                 va_end (argptr);
 208
 209                 sprintf (text2, "ERROR: %s\n", text);
 210                 WriteFile (houtput, text5, strlen (text5), &dummy, NULL);
 211                 WriteFile (houtput, text4, strlen (text4), &dummy, NULL);
 212                 WriteFile (houtput, text2, strlen (text2), &dummy, NULL);
 213                 WriteFile (houtput, text3, strlen (text3), &dummy, NULL);
 214                 WriteFile (houtput, text4, strlen (text4), &dummy, NULL);
 215
 216
 217                 starttime = Sys_DoubleTime ();
 218                 sc_return_on_enter = true;      // so Enter will get us out of here
 219
 220                 while (!Sys_ConsoleInput () && ((Sys_DoubleTime () - starttime) < CONSOLE_ERROR_TIMEOUT))
 221                         SleepUntilInput(1);
 222         }
 223         else
 224         {
 225         // switch to windowed so the message box is visible, unless we already
 226         // tried that and failed
 227                 if (!in_sys_error0)
 228                 {
 229                         in_sys_error0 = 1;
 230                         VID_SetDefaultMode ();
 231                         MessageBox(NULL, text, "Quake Error", MB_OK | MB_SETFOREGROUND | MB_ICONSTOP);
 232                 }
 233                 else
 234                         MessageBox(NULL, text, "Double Quake Error", MB_OK | MB_SETFOREGROUND | MB_ICONSTOP);
 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         Host_Shutdown();
 256
 257         if (tevent)
 258                 CloseHandle (tevent);
 259
 260         if (cls.state == ca_dedicated)
 261                 FreeConsole ();
 262
 263 // shut down QHOST hooks if necessary
 264         DeinitConProc ();
 265
 266         exit (0);
 267 }
 268
 269
 270 /*
 271 ================
 272 Sys_DoubleTime
 273 ================
 274 */
 275 double Sys_DoubleTime (void)
 276 {
 277         static int first = true;
 278         static double oldtime = 0.0, curtime = 0.0;
 279         double newtime;
 280         // LordHavoc: note to people modifying this code, DWORD is specifically defined as an unsigned 32bit number, therefore the 65536.0 * 65536.0 is fine.
 281         if (sys_usetimegettime.integer)
 282         {
 283                 static int firsttimegettime = true;
 284                 // timeGetTime
 285                 // platform:
 286                 // Windows 95/98/ME/NT/2000/XP
 287                 // features:
 288                 // reasonable accuracy (millisecond)
 289                 // issues:
 290                 // wraps around every 47 days or so (but this is non-fatal to us, odd times are rejected, only causes a one frame stutter)
 291
 292                 // make sure the timer is high precision, otherwise different versions of windows have varying accuracy
 293                 if (firsttimegettime)
 294                 {
 295                         timeBeginPeriod (1);
 296                         firsttimegettime = false;
 297                 }
 298
 299                 newtime = (double) timeGetTime () / 1000.0;
 300         }
 301         else
 302         {
 303                 // QueryPerformanceCounter
 304                 // platform:
 305                 // Windows 95/98/ME/NT/2000/XP
 306                 // features:
 307                 // very accurate (CPU cycles)
 308                 // known issues:
 309                 // does not necessarily match realtime too well (tends to get faster and faster in win98)
 310                 // wraps around occasionally on some platforms (depends on CPU speed and probably other unknown factors)
 311                 double timescale;
 312                 LARGE_INTEGER PerformanceFreq;
 313                 LARGE_INTEGER PerformanceCount;
 314
 315                 if (!QueryPerformanceFrequency (&PerformanceFreq))
 316                         Sys_Error ("No hardware timer available");
 317                 QueryPerformanceCounter (&PerformanceCount);
 318
 319                 #ifdef __BORLANDC__
 320                 timescale = 1.0 / ((double) PerformanceFreq.u.LowPart + (double) PerformanceFreq.u.HighPart * 65536.0 * 65536.0);
 321                 newtime = ((double) PerformanceCount.u.LowPart + (double) PerformanceCount.u.HighPart * 65536.0 * 65536.0) * timescale;
 322                 #else
 323                 timescale = 1.0 / ((double) PerformanceFreq.LowPart + (double) PerformanceFreq.HighPart * 65536.0 * 65536.0);
 324                 newtime = ((double) PerformanceCount.LowPart + (double) PerformanceCount.HighPart * 65536.0 * 65536.0) * timescale;
 325                 #endif
 326         }
 327
 328         if (first)
 329         {
 330                 first = false;
 331                 oldtime = newtime;
 332         }
 333
 334         if (newtime < oldtime)
 335         {
 336                 // warn if it's significant
 337                 if (newtime - oldtime < -0.01)
 338                         Con_Printf("Sys_DoubleTime: time stepped backwards (went from %f to %f, difference %f)\n", oldtime, newtime, newtime - oldtime);
 339         }
 340         else
 341                 curtime += newtime - oldtime;
 342         oldtime = newtime;
 343
 344         return curtime;
 345 }
 346
 347
 348 char *Sys_ConsoleInput (void)
 349 {
 350         static char text[256];
 351         static int len;
 352         INPUT_RECORD recs[1024];
 353         int ch;
 354         DWORD numread, numevents, dummy;
 355
 356         if (cls.state != ca_dedicated)
 357                 return NULL;
 358
 359
 360         for ( ;; )
 361         {
 362                 if (!GetNumberOfConsoleInputEvents (hinput, &numevents))
 363                         Sys_Error ("Error getting # of console events");
 364
 365                 if (numevents <= 0)
 366                         break;
 367
 368                 if (!ReadConsoleInput(hinput, recs, 1, &numread))
 369                         Sys_Error ("Error reading console input");
 370
 371                 if (numread != 1)
 372                         Sys_Error ("Couldn't read console input");
 373
 374                 if (recs[0].EventType == KEY_EVENT)
 375                 {
 376                         if (!recs[0].Event.KeyEvent.bKeyDown)
 377                         {
 378                                 ch = recs[0].Event.KeyEvent.uChar.AsciiChar;
 379
 380                                 switch (ch)
 381                                 {
 382                                         case '\r':
 383                                                 WriteFile(houtput, "\r\n", 2, &dummy, NULL);
 384
 385                                                 if (len)
 386                                                 {
 387                                                         text[len] = 0;
 388                                                         len = 0;
 389                                                         return text;
 390                                                 }
 391                                                 else if (sc_return_on_enter)
 392                                                 {
 393                                                 // special case to allow exiting from the error handler on Enter
 394                                                         text[0] = '\r';
 395                                                         len = 0;
 396                                                         return text;
 397                                                 }
 398
 399                                                 break;
 400
 401                                         case '\b':
 402                                                 WriteFile(houtput, "\b \b", 3, &dummy, NULL);
 403                                                 if (len)
 404                                                 {
 405                                                         len--;
 406                                                 }
 407                                                 break;
 408
 409                                         default:
 410                                                 if (ch >= ' ')
 411                                                 {
 412                                                         WriteFile(houtput, &ch, 1, &dummy, NULL);
 413                                                         text[len] = ch;
 414                                                         len = (len + 1) & 0xff;
 415                                                 }
 416
 417                                                 break;
 418
 419                                 }
 420                         }
 421                 }
 422         }
 423
 424         return NULL;
 425 }
 426
 427 void Sys_Sleep (void)
 428 {
 429         Sleep (1);
 430 }
 431
 432
 433 void Sys_SendKeyEvents (void)
 434 {
 435         MSG msg;
 436
 437         while (PeekMessage (&msg, NULL, 0, 0, PM_NOREMOVE))
 438         {
 439         // we always update if there are any event, even if we're paused
 440                 scr_skipupdate = 0;
 441
 442                 if (!GetMessage (&msg, NULL, 0, 0))
 443                         Sys_Quit ();
 444
 445                 TranslateMessage (&msg);
 446                 DispatchMessage (&msg);
 447         }
 448 }
 449
 450
 451 /*
 452 ==============================================================================
 453
 454 WINDOWS CRAP
 455
 456 ==============================================================================
 457 */
 458
 459
 460 void SleepUntilInput (int time)
 461 {
 462         MsgWaitForMultipleObjects(1, &tevent, false, time, QS_ALLINPUT);
 463 }
 464
 465
 466 /*
 467 ==================
 468 WinMain
 469 ==================
 470 */
 471 HINSTANCE       global_hInstance;
 472 int                     global_nCmdShow;
 473 char            *argv[MAX_NUM_ARGVS];
 474 static char     *empty_string = "";
 475
 476 int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
 477 {
 478         double                  frameoldtime, framenewtime;
 479         MEMORYSTATUS    lpBuffer;
 480         static  char    cwd[1024];
 481         int                             t;
 482
 483         /* previous instances do not exist in Win32 */
 484         if (hPrevInstance)
 485                 return 0;
 486
 487         Cvar_RegisterVariable(&sys_usetimegettime);
 488
 489         global_hInstance = hInstance;
 490         global_nCmdShow = nCmdShow;
 491
 492         lpBuffer.dwLength = sizeof(MEMORYSTATUS);
 493         GlobalMemoryStatus (&lpBuffer);
 494
 495         if (!GetCurrentDirectory (sizeof(cwd), cwd))
 496                 Sys_Error ("Couldn't determine current directory");
 497
 498         if (cwd[strlen(cwd)-1] == '/')
 499                 cwd[strlen(cwd)-1] = 0;
 500
 501         memset(&host_parms, 0, sizeof(host_parms));
 502
 503         host_parms.basedir = cwd;
 504
 505         host_parms.argc = 1;
 506         argv[0] = empty_string;
 507
 508         while (*lpCmdLine && (host_parms.argc < MAX_NUM_ARGVS))
 509         {
 510                 while (*lpCmdLine && ((*lpCmdLine <= 32) || (*lpCmdLine > 126)))
 511                         lpCmdLine++;
 512
 513                 if (*lpCmdLine)
 514                 {
 515                         argv[host_parms.argc] = lpCmdLine;
 516                         host_parms.argc++;
 517
 518                         while (*lpCmdLine && ((*lpCmdLine > 32) && (*lpCmdLine <= 126)))
 519                                 lpCmdLine++;
 520
 521                         if (*lpCmdLine)
 522                         {
 523                                 *lpCmdLine = 0;
 524                                 lpCmdLine++;
 525                         }
 526
 527                 }
 528         }
 529
 530         host_parms.argv = argv;
 531
 532         COM_InitArgv (host_parms.argc, host_parms.argv);
 533
 534         host_parms.argc = com_argc;
 535         host_parms.argv = com_argv;
 536
 537         Sys_Shared_EarlyInit();
 538
 539         tevent = CreateEvent(NULL, false, false, NULL);
 540
 541         if (!tevent)
 542                 Sys_Error ("Couldn't create event");
 543
 544         // LordHavoc: can't check cls.state because it hasn't been initialized yet
 545         // if (cls.state == ca_dedicated)
 546         if (COM_CheckParm("-dedicated"))
 547         {
 548                 if (!AllocConsole ())
 549                         Sys_Error ("Couldn't create dedicated server console");
 550
 551                 hinput = GetStdHandle (STD_INPUT_HANDLE);
 552                 houtput = GetStdHandle (STD_OUTPUT_HANDLE);
 553
 554         // give QHOST a chance to hook into the console
 555                 if ((t = COM_CheckParm ("-HFILE")) > 0)
 556                 {
 557                         if (t < com_argc)
 558                                 hFile = (HANDLE)atoi (com_argv[t+1]);
 559                 }
 560
 561                 if ((t = COM_CheckParm ("-HPARENT")) > 0)
 562                 {
 563                         if (t < com_argc)
 564                                 heventParent = (HANDLE)atoi (com_argv[t+1]);
 565                 }
 566
 567                 if ((t = COM_CheckParm ("-HCHILD")) > 0)
 568                 {
 569                         if (t < com_argc)
 570                                 heventChild = (HANDLE)atoi (com_argv[t+1]);
 571                 }
 572
 573                 InitConProc (hFile, heventParent, heventChild);
 574         }
 575
 576 // because sound is off until we become active
 577         S_BlockSound ();
 578
 579         Host_Init ();
 580
 581         Sys_Shared_LateInit();
 582
 583         frameoldtime = Sys_DoubleTime ();
 584
 585         /* main window message loop */
 586         while (1)
 587         {
 588                 if (cls.state != ca_dedicated)
 589                 {
 590                 // yield the CPU for a little while when paused, minimized, or not the focus
 591                         if ((cl.paused && !vid_activewindow) || vid_hidden)
 592                         {
 593                                 SleepUntilInput (PAUSE_SLEEP);
 594                                 scr_skipupdate = 1;             // no point in bothering to draw
 595                         }
 596                         else if (!vid_activewindow)
 597                                 SleepUntilInput (NOT_FOCUS_SLEEP);
 598                 }
 599
 600                 framenewtime = Sys_DoubleTime ();
 601                 Host_Frame (framenewtime - frameoldtime);
 602                 frameoldtime = framenewtime;
 603         }
 604
 605         /* return success of application */
 606         return true;
 607 }
 608