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