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 <windows.h>
  24 #include <dsound.h>
  25 #include "errno.h"
  26 #include "resource.h"
  27 #include "conproc.h"
  28 #include "direct.h"
  29
  30 extern void S_BlockSound (void);
  31
  32 cvar_t sys_usetimegettime = {CVAR_SAVE, "sys_usetimegettime", "1"};
  33
  34 // # of seconds to wait on Sys_Error running dedicated before exiting
  35 #define CONSOLE_ERROR_TIMEOUT   60.0
  36 // sleep time on pause or minimization
  37 #define PAUSE_SLEEP             50
  38 // sleep time when not focus
  39 #define NOT_FOCUS_SLEEP 20
  40
  41 static qboolean         sc_return_on_enter = false;
  42 HANDLE                          hinput, houtput;
  43
  44 static HANDLE   tevent;
  45 static HANDLE   hFile;
  46 static HANDLE   heventParent;
  47 static HANDLE   heventChild;
  48
  49
  50 /*
  51 ===============================================================================
  52
  53 SYSTEM IO
  54
  55 ===============================================================================
  56 */
  57
  58 void SleepUntilInput (int time);
  59
  60 void Sys_Error (const char *error, ...)
  61 {
  62         va_list         argptr;
  63         char            text[1024];
  64         static int      in_sys_error0 = 0;
  65         static int      in_sys_error1 = 0;
  66         static int      in_sys_error2 = 0;
  67         static int      in_sys_error3 = 0;
  68
  69         va_start (argptr, error);
  70         vsnprintf (text, sizeof (text), error, argptr);
  71         va_end (argptr);
  72
  73         Con_Printf ("Quake Error: %s\n", text);
  74
  75         // close video so the message box is visible, unless we already tried that
  76         if (!in_sys_error0 && cls.state != ca_dedicated)
  77         {
  78                 in_sys_error0 = 1;
  79                 VID_Shutdown();
  80         }
  81
  82         if (!in_sys_error3 && cls.state != ca_dedicated)
  83         {
  84                 in_sys_error3 = true;
  85                 MessageBox(NULL, text, "Quake Error", MB_OK | MB_SETFOREGROUND | MB_ICONSTOP);
  86         }
  87
  88         if (!in_sys_error1)
  89         {
  90                 in_sys_error1 = 1;
  91                 Host_Shutdown ();
  92         }
  93
  94 // shut down QHOST hooks if necessary
  95         if (!in_sys_error2)
  96         {
  97                 in_sys_error2 = 1;
  98                 Sys_Shutdown ();
  99         }
 100
 101         exit (1);
 102 }
 103
 104 void Sys_Shutdown (void)
 105 {
 106         if (tevent)
 107                 CloseHandle (tevent);
 108
 109         if (cls.state == ca_dedicated)
 110                 FreeConsole ();
 111
 112 // shut down QHOST hooks if necessary
 113         DeinitConProc ();
 114 }
 115
 116 void Sys_PrintToTerminal(const char *text)
 117 {
 118         DWORD dummy;
 119         extern HANDLE houtput;
 120         if (cls.state == ca_dedicated)
 121                 WriteFile(houtput, text, strlen (text), &dummy, NULL);
 122 }
 123
 124 /*
 125 ================
 126 Sys_DoubleTime
 127 ================
 128 */
 129 double Sys_DoubleTime (void)
 130 {
 131         static int first = true;
 132         static double oldtime = 0.0, curtime = 0.0;
 133         double newtime;
 134         // LordHavoc: note to people modifying this code, DWORD is specifically defined as an unsigned 32bit number, therefore the 65536.0 * 65536.0 is fine.
 135         if (sys_usetimegettime.integer)
 136         {
 137                 static int firsttimegettime = true;
 138                 // timeGetTime
 139                 // platform:
 140                 // Windows 95/98/ME/NT/2000/XP
 141                 // features:
 142                 // reasonable accuracy (millisecond)
 143                 // issues:
 144                 // wraps around every 47 days or so (but this is non-fatal to us, odd times are rejected, only causes a one frame stutter)
 145
 146                 // make sure the timer is high precision, otherwise different versions of windows have varying accuracy
 147                 if (firsttimegettime)
 148                 {
 149                         timeBeginPeriod (1);
 150                         firsttimegettime = false;
 151                 }
 152
 153                 newtime = (double) timeGetTime () / 1000.0;
 154         }
 155         else
 156         {
 157                 // QueryPerformanceCounter
 158                 // platform:
 159                 // Windows 95/98/ME/NT/2000/XP
 160                 // features:
 161                 // very accurate (CPU cycles)
 162                 // known issues:
 163                 // does not necessarily match realtime too well (tends to get faster and faster in win98)
 164                 // wraps around occasionally on some platforms (depends on CPU speed and probably other unknown factors)
 165                 double timescale;
 166                 LARGE_INTEGER PerformanceFreq;
 167                 LARGE_INTEGER PerformanceCount;
 168
 169                 if (!QueryPerformanceFrequency (&PerformanceFreq))
 170                         Sys_Error ("No hardware timer available");
 171                 QueryPerformanceCounter (&PerformanceCount);
 172
 173                 #ifdef __BORLANDC__
 174                 timescale = 1.0 / ((double) PerformanceFreq.u.LowPart + (double) PerformanceFreq.u.HighPart * 65536.0 * 65536.0);
 175                 newtime = ((double) PerformanceCount.u.LowPart + (double) PerformanceCount.u.HighPart * 65536.0 * 65536.0) * timescale;
 176                 #else
 177                 timescale = 1.0 / ((double) PerformanceFreq.LowPart + (double) PerformanceFreq.HighPart * 65536.0 * 65536.0);
 178                 newtime = ((double) PerformanceCount.LowPart + (double) PerformanceCount.HighPart * 65536.0 * 65536.0) * timescale;
 179                 #endif
 180         }
 181
 182         if (first)
 183         {
 184                 first = false;
 185                 oldtime = newtime;
 186         }
 187
 188         if (newtime < oldtime)
 189         {
 190                 // warn if it's significant
 191                 if (newtime - oldtime < -0.01)
 192                         Con_Printf("Sys_DoubleTime: time stepped backwards (went from %f to %f, difference %f)\n", oldtime, newtime, newtime - oldtime);
 193         }
 194         else
 195                 curtime += newtime - oldtime;
 196         oldtime = newtime;
 197
 198         return curtime;
 199 }
 200
 201
 202 char *Sys_ConsoleInput (void)
 203 {
 204         static char text[256];
 205         static int len;
 206         INPUT_RECORD recs[1024];
 207         int ch;
 208         DWORD numread, numevents, dummy;
 209
 210         if (cls.state != ca_dedicated)
 211                 return NULL;
 212
 213
 214         for ( ;; )
 215         {
 216                 if (!GetNumberOfConsoleInputEvents (hinput, &numevents))
 217                         Sys_Error ("Error getting # of console events");
 218
 219                 if (numevents <= 0)
 220                         break;
 221
 222                 if (!ReadConsoleInput(hinput, recs, 1, &numread))
 223                         Sys_Error ("Error reading console input");
 224
 225                 if (numread != 1)
 226                         Sys_Error ("Couldn't read console input");
 227
 228                 if (recs[0].EventType == KEY_EVENT)
 229                 {
 230                         if (!recs[0].Event.KeyEvent.bKeyDown)
 231                         {
 232                                 ch = recs[0].Event.KeyEvent.uChar.AsciiChar;
 233
 234                                 switch (ch)
 235                                 {
 236                                         case '\r':
 237                                                 WriteFile(houtput, "\r\n", 2, &dummy, NULL);
 238
 239                                                 if (len)
 240                                                 {
 241                                                         text[len] = 0;
 242                                                         len = 0;
 243                                                         return text;
 244                                                 }
 245                                                 else if (sc_return_on_enter)
 246                                                 {
 247                                                 // special case to allow exiting from the error handler on Enter
 248                                                         text[0] = '\r';
 249                                                         len = 0;
 250                                                         return text;
 251                                                 }
 252
 253                                                 break;
 254
 255                                         case '\b':
 256                                                 WriteFile(houtput, "\b \b", 3, &dummy, NULL);
 257                                                 if (len)
 258                                                 {
 259                                                         len--;
 260                                                 }
 261                                                 break;
 262
 263                                         default:
 264                                                 if (ch >= ' ')
 265                                                 {
 266                                                         WriteFile(houtput, &ch, 1, &dummy, NULL);
 267                                                         text[len] = ch;
 268                                                         len = (len + 1) & 0xff;
 269                                                 }
 270
 271                                                 break;
 272
 273                                 }
 274                         }
 275                 }
 276         }
 277
 278         return NULL;
 279 }
 280
 281 void Sys_Sleep(int milliseconds)
 282 {
 283         if (milliseconds < 1)
 284                 milliseconds = 1;
 285         Sleep(milliseconds);
 286 }
 287
 288 char *Sys_GetClipboardData (void)
 289 {
 290         char *data = NULL;
 291         char *cliptext;
 292
 293         if (OpenClipboard (NULL) != 0)
 294         {
 295                 HANDLE hClipboardData;
 296
 297                 if ((hClipboardData = GetClipboardData (CF_TEXT)) != 0)
 298                 {
 299                         if ((cliptext = GlobalLock (hClipboardData)) != 0)
 300                         {
 301                                 data = malloc (GlobalSize(hClipboardData)+1);
 302                                 strcpy (data, cliptext);
 303                                 GlobalUnlock (hClipboardData);
 304                         }
 305                 }
 306                 CloseClipboard ();
 307         }
 308         return data;
 309 }
 310
 311 /*
 312 ==============================================================================
 313
 314 WINDOWS CRAP
 315
 316 ==============================================================================
 317 */
 318
 319
 320 void SleepUntilInput (int time)
 321 {
 322         MsgWaitForMultipleObjects(1, &tevent, false, time, QS_ALLINPUT);
 323 }
 324
 325
 326 /*
 327 ==================
 328 WinMain
 329 ==================
 330 */
 331 HINSTANCE       global_hInstance;
 332 const char      *argv[MAX_NUM_ARGVS];
 333 char            program_name[MAX_OSPATH];
 334
 335 int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
 336 {
 337         double frameoldtime, framenewtime;
 338         MEMORYSTATUS lpBuffer;
 339         int t;
 340
 341         /* previous instances do not exist in Win32 */
 342         if (hPrevInstance)
 343                 return 0;
 344
 345         global_hInstance = hInstance;
 346
 347         lpBuffer.dwLength = sizeof(MEMORYSTATUS);
 348         GlobalMemoryStatus (&lpBuffer);
 349
 350         program_name[sizeof(program_name)-1] = 0;
 351         GetModuleFileNameA(NULL, program_name, sizeof(program_name) - 1);
 352
 353         com_argc = 1;
 354         com_argv = argv;
 355         argv[0] = program_name;
 356
 357         // FIXME: this tokenizer is rather redundent, call a more general one
 358         while (*lpCmdLine && (com_argc < MAX_NUM_ARGVS))
 359         {
 360                 while (*lpCmdLine && *lpCmdLine <= ' ')
 361                         lpCmdLine++;
 362
 363                 if (!*lpCmdLine)
 364                         break;
 365
 366                 if (*lpCmdLine == '\"')
 367                 {
 368                         // quoted string
 369                         lpCmdLine++;
 370                         argv[com_argc] = lpCmdLine;
 371                         com_argc++;
 372                         while (*lpCmdLine && (*lpCmdLine != '\"'))
 373                                 lpCmdLine++;
 374                 }
 375                 else
 376                 {
 377                         // unquoted word
 378                         argv[com_argc] = lpCmdLine;
 379                         com_argc++;
 380                         while (*lpCmdLine && *lpCmdLine > ' ')
 381                                 lpCmdLine++;
 382                 }
 383
 384                 if (*lpCmdLine)
 385                 {
 386                         *lpCmdLine = 0;
 387                         lpCmdLine++;
 388                 }
 389         }
 390
 391         Sys_Shared_EarlyInit();
 392
 393         Cvar_RegisterVariable(&sys_usetimegettime);
 394
 395         tevent = CreateEvent(NULL, false, false, NULL);
 396
 397         if (!tevent)
 398                 Sys_Error ("Couldn't create event");
 399
 400         // LordHavoc: can't check cls.state because it hasn't been initialized yet
 401         // if (cls.state == ca_dedicated)
 402         if (COM_CheckParm("-dedicated"))
 403         {
 404                 if (!AllocConsole ())
 405                         Sys_Error ("Couldn't create dedicated server console");
 406
 407                 hinput = GetStdHandle (STD_INPUT_HANDLE);
 408                 houtput = GetStdHandle (STD_OUTPUT_HANDLE);
 409
 410         // give QHOST a chance to hook into the console
 411                 if ((t = COM_CheckParm ("-HFILE")) > 0)
 412                 {
 413                         if (t < com_argc)
 414                                 hFile = (HANDLE)atoi (com_argv[t+1]);
 415                 }
 416
 417                 if ((t = COM_CheckParm ("-HPARENT")) > 0)
 418                 {
 419                         if (t < com_argc)
 420                                 heventParent = (HANDLE)atoi (com_argv[t+1]);
 421                 }
 422
 423                 if ((t = COM_CheckParm ("-HCHILD")) > 0)
 424                 {
 425                         if (t < com_argc)
 426                                 heventChild = (HANDLE)atoi (com_argv[t+1]);
 427                 }
 428
 429                 InitConProc (hFile, heventParent, heventChild);
 430         }
 431
 432 // because sound is off until we become active
 433         S_BlockSound ();
 434
 435         Host_Init ();
 436
 437         Sys_Shared_LateInit();
 438
 439         frameoldtime = Sys_DoubleTime ();
 440
 441         /* main window message loop */
 442         while (1)
 443         {
 444                 if (cls.state != ca_dedicated)
 445                 {
 446                 // yield the CPU for a little while when paused, minimized, or not the focus
 447                         if ((cl.paused && !vid_activewindow) || vid_hidden)
 448                         {
 449                                 SleepUntilInput (PAUSE_SLEEP);
 450                                 scr_skipupdate = 1;             // no point in bothering to draw
 451                         }
 452                         else if (!vid_activewindow)
 453                                 SleepUntilInput (NOT_FOCUS_SLEEP);
 454                 }
 455
 456                 framenewtime = Sys_DoubleTime ();
 457                 Host_Frame (framenewtime - frameoldtime);
 458                 frameoldtime = framenewtime;
 459         }
 460
 461         /* return success of application */
 462         return true;
 463 }