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
  52 DLL MANAGEMENT
  53
  54 ===============================================================================
  55 */
  56
  57 dllhandle_t Sys_LoadLibrary (const char* name)
  58 {
  59         return LoadLibrary (name);
  60 }
  61
  62 void Sys_UnloadLibrary (dllhandle_t handle)
  63 {
  64         FreeLibrary (handle);
  65 }
  66
  67 void* Sys_GetProcAddress (dllhandle_t handle, const char* name)
  68 {
  69         return (void *)GetProcAddress (handle, name);
  70 }
  71
  72
  73 /*
  74 ===============================================================================
  75
  76 SYSTEM IO
  77
  78 ===============================================================================
  79 */
  80
  81 void SleepUntilInput (int time);
  82
  83 void Sys_Error (const char *error, ...)
  84 {
  85         va_list         argptr;
  86         char            text[1024], text2[1024];
  87         char            *text3 = "Press Enter to exit\n";
  88         char            *text4 = "***********************************\n";
  89         char            *text5 = "\n";
  90         DWORD           dummy;
  91         double          starttime;
  92         static int      in_sys_error0 = 0;
  93         static int      in_sys_error1 = 0;
  94         static int      in_sys_error2 = 0;
  95         static int      in_sys_error3 = 0;
  96
  97         if (!in_sys_error3)
  98                 in_sys_error3 = 1;
  99
 100         va_start (argptr, error);
 101         vsprintf (text, error, argptr);
 102         va_end (argptr);
 103
 104         if (cls.state == ca_dedicated)
 105         {
 106                 va_start (argptr, error);
 107                 vsprintf (text, error, argptr);
 108                 va_end (argptr);
 109
 110                 sprintf (text2, "ERROR: %s\n", text);
 111                 WriteFile (houtput, text5, strlen (text5), &dummy, NULL);
 112                 WriteFile (houtput, text4, strlen (text4), &dummy, NULL);
 113                 WriteFile (houtput, text2, strlen (text2), &dummy, NULL);
 114                 WriteFile (houtput, text3, strlen (text3), &dummy, NULL);
 115                 WriteFile (houtput, text4, strlen (text4), &dummy, NULL);
 116
 117
 118                 starttime = Sys_DoubleTime ();
 119                 sc_return_on_enter = true;      // so Enter will get us out of here
 120
 121                 while (!Sys_ConsoleInput () && ((Sys_DoubleTime () - starttime) < CONSOLE_ERROR_TIMEOUT))
 122                         SleepUntilInput(1);
 123         }
 124         else
 125         {
 126         // switch to windowed so the message box is visible, unless we already
 127         // tried that and failed
 128                 if (!in_sys_error0)
 129                 {
 130                         in_sys_error0 = 1;
 131                         VID_Shutdown();
 132                         MessageBox(NULL, text, "Quake Error", MB_OK | MB_SETFOREGROUND | MB_ICONSTOP);
 133                 }
 134                 else
 135                         MessageBox(NULL, text, "Double Quake Error", MB_OK | MB_SETFOREGROUND | MB_ICONSTOP);
 136         }
 137
 138         if (!in_sys_error1)
 139         {
 140                 in_sys_error1 = 1;
 141                 Host_Shutdown ();
 142         }
 143
 144 // shut down QHOST hooks if necessary
 145         if (!in_sys_error2)
 146         {
 147                 in_sys_error2 = 1;
 148                 DeinitConProc ();
 149         }
 150
 151         exit (1);
 152 }
 153
 154 void Sys_Quit (void)
 155 {
 156         Host_Shutdown();
 157
 158         if (tevent)
 159                 CloseHandle (tevent);
 160
 161         if (cls.state == ca_dedicated)
 162                 FreeConsole ();
 163
 164 // shut down QHOST hooks if necessary
 165         DeinitConProc ();
 166
 167         exit (0);
 168 }
 169
 170
 171 /*
 172 ================
 173 Sys_DoubleTime
 174 ================
 175 */
 176 double Sys_DoubleTime (void)
 177 {
 178         static int first = true;
 179         static double oldtime = 0.0, curtime = 0.0;
 180         double newtime;
 181         // LordHavoc: note to people modifying this code, DWORD is specifically defined as an unsigned 32bit number, therefore the 65536.0 * 65536.0 is fine.
 182         if (sys_usetimegettime.integer)
 183         {
 184                 static int firsttimegettime = true;
 185                 // timeGetTime
 186                 // platform:
 187                 // Windows 95/98/ME/NT/2000/XP
 188                 // features:
 189                 // reasonable accuracy (millisecond)
 190                 // issues:
 191                 // wraps around every 47 days or so (but this is non-fatal to us, odd times are rejected, only causes a one frame stutter)
 192
 193                 // make sure the timer is high precision, otherwise different versions of windows have varying accuracy
 194                 if (firsttimegettime)
 195                 {
 196                         timeBeginPeriod (1);
 197                         firsttimegettime = false;
 198                 }
 199
 200                 newtime = (double) timeGetTime () / 1000.0;
 201         }
 202         else
 203         {
 204                 // QueryPerformanceCounter
 205                 // platform:
 206                 // Windows 95/98/ME/NT/2000/XP
 207                 // features:
 208                 // very accurate (CPU cycles)
 209                 // known issues:
 210                 // does not necessarily match realtime too well (tends to get faster and faster in win98)
 211                 // wraps around occasionally on some platforms (depends on CPU speed and probably other unknown factors)
 212                 double timescale;
 213                 LARGE_INTEGER PerformanceFreq;
 214                 LARGE_INTEGER PerformanceCount;
 215
 216                 if (!QueryPerformanceFrequency (&PerformanceFreq))
 217                         Sys_Error ("No hardware timer available");
 218                 QueryPerformanceCounter (&PerformanceCount);
 219
 220                 #ifdef __BORLANDC__
 221                 timescale = 1.0 / ((double) PerformanceFreq.u.LowPart + (double) PerformanceFreq.u.HighPart * 65536.0 * 65536.0);
 222                 newtime = ((double) PerformanceCount.u.LowPart + (double) PerformanceCount.u.HighPart * 65536.0 * 65536.0) * timescale;
 223                 #else
 224                 timescale = 1.0 / ((double) PerformanceFreq.LowPart + (double) PerformanceFreq.HighPart * 65536.0 * 65536.0);
 225                 newtime = ((double) PerformanceCount.LowPart + (double) PerformanceCount.HighPart * 65536.0 * 65536.0) * timescale;
 226                 #endif
 227         }
 228
 229         if (first)
 230         {
 231                 first = false;
 232                 oldtime = newtime;
 233         }
 234
 235         if (newtime < oldtime)
 236         {
 237                 // warn if it's significant
 238                 if (newtime - oldtime < -0.01)
 239                         Con_Printf("Sys_DoubleTime: time stepped backwards (went from %f to %f, difference %f)\n", oldtime, newtime, newtime - oldtime);
 240         }
 241         else
 242                 curtime += newtime - oldtime;
 243         oldtime = newtime;
 244
 245         return curtime;
 246 }
 247
 248
 249 char *Sys_ConsoleInput (void)
 250 {
 251         static char text[256];
 252         static int len;
 253         INPUT_RECORD recs[1024];
 254         int ch;
 255         DWORD numread, numevents, dummy;
 256
 257         if (cls.state != ca_dedicated)
 258                 return NULL;
 259
 260
 261         for ( ;; )
 262         {
 263                 if (!GetNumberOfConsoleInputEvents (hinput, &numevents))
 264                         Sys_Error ("Error getting # of console events");
 265
 266                 if (numevents <= 0)
 267                         break;
 268
 269                 if (!ReadConsoleInput(hinput, recs, 1, &numread))
 270                         Sys_Error ("Error reading console input");
 271
 272                 if (numread != 1)
 273                         Sys_Error ("Couldn't read console input");
 274
 275                 if (recs[0].EventType == KEY_EVENT)
 276                 {
 277                         if (!recs[0].Event.KeyEvent.bKeyDown)
 278                         {
 279                                 ch = recs[0].Event.KeyEvent.uChar.AsciiChar;
 280
 281                                 switch (ch)
 282                                 {
 283                                         case '\r':
 284                                                 WriteFile(houtput, "\r\n", 2, &dummy, NULL);
 285
 286                                                 if (len)
 287                                                 {
 288                                                         text[len] = 0;
 289                                                         len = 0;
 290                                                         return text;
 291                                                 }
 292                                                 else if (sc_return_on_enter)
 293                                                 {
 294                                                 // special case to allow exiting from the error handler on Enter
 295                                                         text[0] = '\r';
 296                                                         len = 0;
 297                                                         return text;
 298                                                 }
 299
 300                                                 break;
 301
 302                                         case '\b':
 303                                                 WriteFile(houtput, "\b \b", 3, &dummy, NULL);
 304                                                 if (len)
 305                                                 {
 306                                                         len--;
 307                                                 }
 308                                                 break;
 309
 310                                         default:
 311                                                 if (ch >= ' ')
 312                                                 {
 313                                                         WriteFile(houtput, &ch, 1, &dummy, NULL);
 314                                                         text[len] = ch;
 315                                                         len = (len + 1) & 0xff;
 316                                                 }
 317
 318                                                 break;
 319
 320                                 }
 321                         }
 322                 }
 323         }
 324
 325         return NULL;
 326 }
 327
 328 void Sys_Sleep (void)
 329 {
 330         Sleep (1);
 331 }
 332
 333
 334 void Sys_SendKeyEvents (void)
 335 {
 336         MSG msg;
 337
 338         while (PeekMessage (&msg, NULL, 0, 0, PM_NOREMOVE))
 339         {
 340         // we always update if there are any event, even if we're paused
 341                 scr_skipupdate = 0;
 342
 343                 if (!GetMessage (&msg, NULL, 0, 0))
 344                         Sys_Quit ();
 345
 346                 TranslateMessage (&msg);
 347                 DispatchMessage (&msg);
 348         }
 349 }
 350
 351
 352 /*
 353 ==============================================================================
 354
 355 WINDOWS CRAP
 356
 357 ==============================================================================
 358 */
 359
 360
 361 void SleepUntilInput (int time)
 362 {
 363         MsgWaitForMultipleObjects(1, &tevent, false, time, QS_ALLINPUT);
 364 }
 365
 366
 367 /*
 368 ==================
 369 WinMain
 370 ==================
 371 */
 372 HINSTANCE       global_hInstance;
 373 int                     global_nCmdShow;
 374 const char      *argv[MAX_NUM_ARGVS];
 375 char            program_name[MAX_OSPATH];
 376
 377 int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
 378 {
 379         double frameoldtime, framenewtime;
 380         MEMORYSTATUS lpBuffer;
 381         int t;
 382
 383         /* previous instances do not exist in Win32 */
 384         if (hPrevInstance)
 385                 return 0;
 386
 387         global_hInstance = hInstance;
 388         global_nCmdShow = nCmdShow;
 389
 390         lpBuffer.dwLength = sizeof(MEMORYSTATUS);
 391         GlobalMemoryStatus (&lpBuffer);
 392
 393         com_argc = 1;
 394         program_name[sizeof(program_name)-1] = 0;
 395         GetModuleFileNameA(NULL, program_name, sizeof(program_name) - 1);
 396         argv[0] = program_name;
 397
 398         while (*lpCmdLine && (com_argc < MAX_NUM_ARGVS))
 399         {
 400                 while (*lpCmdLine && ((*lpCmdLine <= 32) || (*lpCmdLine > 126)))
 401                         lpCmdLine++;
 402
 403                 if (*lpCmdLine)
 404                 {
 405                         argv[com_argc] = lpCmdLine;
 406                         com_argc++;
 407
 408                         while (*lpCmdLine && ((*lpCmdLine > 32) && (*lpCmdLine <= 126)))
 409                                 lpCmdLine++;
 410
 411                         if (*lpCmdLine)
 412                         {
 413                                 *lpCmdLine = 0;
 414                                 lpCmdLine++;
 415                         }
 416                 }
 417         }
 418         com_argv = argv;
 419
 420         Sys_Shared_EarlyInit();
 421
 422         Cvar_RegisterVariable(&sys_usetimegettime);
 423
 424         tevent = CreateEvent(NULL, false, false, NULL);
 425
 426         if (!tevent)
 427                 Sys_Error ("Couldn't create event");
 428
 429         // LordHavoc: can't check cls.state because it hasn't been initialized yet
 430         // if (cls.state == ca_dedicated)
 431         if (COM_CheckParm("-dedicated"))
 432         {
 433                 if (!AllocConsole ())
 434                         Sys_Error ("Couldn't create dedicated server console");
 435
 436                 hinput = GetStdHandle (STD_INPUT_HANDLE);
 437                 houtput = GetStdHandle (STD_OUTPUT_HANDLE);
 438
 439         // give QHOST a chance to hook into the console
 440                 if ((t = COM_CheckParm ("-HFILE")) > 0)
 441                 {
 442                         if (t < com_argc)
 443                                 hFile = (HANDLE)atoi (com_argv[t+1]);
 444                 }
 445
 446                 if ((t = COM_CheckParm ("-HPARENT")) > 0)
 447                 {
 448                         if (t < com_argc)
 449                                 heventParent = (HANDLE)atoi (com_argv[t+1]);
 450                 }
 451
 452                 if ((t = COM_CheckParm ("-HCHILD")) > 0)
 453                 {
 454                         if (t < com_argc)
 455                                 heventChild = (HANDLE)atoi (com_argv[t+1]);
 456                 }
 457
 458                 InitConProc (hFile, heventParent, heventChild);
 459         }
 460
 461 // because sound is off until we become active
 462         S_BlockSound ();
 463
 464         Host_Init ();
 465
 466         Sys_Shared_LateInit();
 467
 468         frameoldtime = Sys_DoubleTime ();
 469
 470         /* main window message loop */
 471         while (1)
 472         {
 473                 if (cls.state != ca_dedicated)
 474                 {
 475                 // yield the CPU for a little while when paused, minimized, or not the focus
 476                         if ((cl.paused && !vid_activewindow) || vid_hidden)
 477                         {
 478                                 SleepUntilInput (PAUSE_SLEEP);
 479                                 scr_skipupdate = 1;             // no point in bothering to draw
 480                         }
 481                         else if (!vid_activewindow)
 482                                 SleepUntilInput (NOT_FOCUS_SLEEP);
 483                 }
 484
 485                 framenewtime = Sys_DoubleTime ();
 486                 Host_Frame (framenewtime - frameoldtime);
 487                 frameoldtime = framenewtime;
 488         }
 489
 490         /* return success of application */
 491         return true;
 492 }
 493