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