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