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