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 <mmsystem.h>
  25 #include <dsound.h>
  26 #include "errno.h"
  27 #include "resource.h"
  28 #include "conproc.h"
  29 #include "direct.h"
  30
  31 cvar_t sys_usetimegettime = {CVAR_SAVE, "sys_usetimegettime", "1", "use windows timeGetTime function (which has issues on some motherboards) for timing rather than QueryPerformanceCounter timer (which has issues on multicore/multiprocessor machines and processors which are designed to conserve power)"};
  32
  33 HANDLE                          hinput, houtput;
  34
  35 static HANDLE   tevent;
  36 static HANDLE   hFile;
  37 static HANDLE   heventParent;
  38 static HANDLE   heventChild;
  39
  40
  41 /*
  42 ===============================================================================
  43
  44 SYSTEM IO
  45
  46 ===============================================================================
  47 */
  48
  49 void Sys_Error (const char *error, ...)
  50 {
  51         va_list         argptr;
  52         char            text[MAX_INPUTLINE];
  53         static int      in_sys_error0 = 0;
  54         static int      in_sys_error1 = 0;
  55         static int      in_sys_error2 = 0;
  56         static int      in_sys_error3 = 0;
  57
  58         va_start (argptr, error);
  59         dpvsnprintf (text, sizeof (text), error, argptr);
  60         va_end (argptr);
  61
  62         Con_Printf ("Quake Error: %s\n", text);
  63
  64         // close video so the message box is visible, unless we already tried that
  65         if (!in_sys_error0 && cls.state != ca_dedicated)
  66         {
  67                 in_sys_error0 = 1;
  68                 VID_Shutdown();
  69         }
  70
  71         if (!in_sys_error3 && cls.state != ca_dedicated)
  72         {
  73                 in_sys_error3 = true;
  74                 MessageBox(NULL, text, "Quake Error", MB_OK | MB_SETFOREGROUND | MB_ICONSTOP);
  75         }
  76
  77         if (!in_sys_error1)
  78         {
  79                 in_sys_error1 = 1;
  80                 Host_Shutdown ();
  81         }
  82
  83 // shut down QHOST hooks if necessary
  84         if (!in_sys_error2)
  85         {
  86                 in_sys_error2 = 1;
  87                 Sys_Shutdown ();
  88         }
  89
  90         exit (1);
  91 }
  92
  93 void Sys_Shutdown (void)
  94 {
  95         if (tevent)
  96                 CloseHandle (tevent);
  97
  98         if (cls.state == ca_dedicated)
  99                 FreeConsole ();
 100
 101 // shut down QHOST hooks if necessary
 102         DeinitConProc ();
 103 }
 104
 105 void Sys_PrintToTerminal(const char *text)
 106 {
 107         DWORD dummy;
 108         extern HANDLE houtput;
 109
 110         if ((houtput != 0) && (houtput != INVALID_HANDLE_VALUE))
 111                 WriteFile(houtput, text, (DWORD) strlen(text), &dummy, NULL);
 112 }
 113
 114 /*
 115 ================
 116 Sys_DoubleTime
 117 ================
 118 */
 119 double Sys_DoubleTime (void)
 120 {
 121         static int first = true;
 122         static double oldtime = 0.0, curtime = 0.0;
 123         double newtime;
 124         // LordHavoc: note to people modifying this code, DWORD is specifically defined as an unsigned 32bit number, therefore the 65536.0 * 65536.0 is fine.
 125         if (sys_usetimegettime.integer)
 126         {
 127                 static int firsttimegettime = true;
 128                 // timeGetTime
 129                 // platform:
 130                 // Windows 95/98/ME/NT/2000/XP
 131                 // features:
 132                 // reasonable accuracy (millisecond)
 133                 // issues:
 134                 // wraps around every 47 days or so (but this is non-fatal to us, odd times are rejected, only causes a one frame stutter)
 135
 136                 // make sure the timer is high precision, otherwise different versions of windows have varying accuracy
 137                 if (firsttimegettime)
 138                 {
 139                         timeBeginPeriod (1);
 140                         firsttimegettime = false;
 141                 }
 142
 143                 newtime = (double) timeGetTime () / 1000.0;
 144         }
 145         else
 146         {
 147                 // QueryPerformanceCounter
 148                 // platform:
 149                 // Windows 95/98/ME/NT/2000/XP
 150                 // features:
 151                 // very accurate (CPU cycles)
 152                 // known issues:
 153                 // does not necessarily match realtime too well (tends to get faster and faster in win98)
 154                 // wraps around occasionally on some platforms (depends on CPU speed and probably other unknown factors)
 155                 double timescale;
 156                 LARGE_INTEGER PerformanceFreq;
 157                 LARGE_INTEGER PerformanceCount;
 158
 159                 if (!QueryPerformanceFrequency (&PerformanceFreq))
 160                 {
 161                         Con_Printf ("No hardware timer available\n");
 162                         // fall back to timeGetTime
 163                         Cvar_SetValueQuick(&sys_usetimegettime, true);
 164                         return Sys_DoubleTime();
 165                 }
 166                 QueryPerformanceCounter (&PerformanceCount);
 167
 168                 #ifdef __BORLANDC__
 169                 timescale = 1.0 / ((double) PerformanceFreq.u.LowPart + (double) PerformanceFreq.u.HighPart * 65536.0 * 65536.0);
 170                 newtime = ((double) PerformanceCount.u.LowPart + (double) PerformanceCount.u.HighPart * 65536.0 * 65536.0) * timescale;
 171                 #else
 172                 timescale = 1.0 / ((double) PerformanceFreq.LowPart + (double) PerformanceFreq.HighPart * 65536.0 * 65536.0);
 173                 newtime = ((double) PerformanceCount.LowPart + (double) PerformanceCount.HighPart * 65536.0 * 65536.0) * timescale;
 174                 #endif
 175         }
 176
 177         if (first)
 178         {
 179                 first = false;
 180                 oldtime = newtime;
 181         }
 182
 183         if (newtime < oldtime)
 184         {
 185                 // warn if it's significant
 186                 if (newtime - oldtime < -0.01)
 187                         Con_Printf("Sys_DoubleTime: time stepped backwards (went from %f to %f, difference %f)\n", oldtime, newtime, newtime - oldtime);
 188         }
 189         else
 190                 curtime += newtime - oldtime;
 191         oldtime = newtime;
 192
 193         return curtime;
 194 }
 195
 196
 197 char *Sys_ConsoleInput (void)
 198 {
 199         static char text[MAX_INPUTLINE];
 200         static int len;
 201         INPUT_RECORD recs[1024];
 202         int ch;
 203         DWORD numread, numevents, dummy;
 204
 205         if (cls.state != ca_dedicated)
 206                 return NULL;
 207
 208
 209         for ( ;; )
 210         {
 211                 if (!GetNumberOfConsoleInputEvents (hinput, &numevents))
 212                         Sys_Error ("Error getting # of console events");
 213
 214                 if (numevents <= 0)
 215                         break;
 216
 217                 if (!ReadConsoleInput(hinput, recs, 1, &numread))
 218                         Sys_Error ("Error reading console input");
 219
 220                 if (numread != 1)
 221                         Sys_Error ("Couldn't read console input");
 222
 223                 if (recs[0].EventType == KEY_EVENT)
 224                 {
 225                         if (!recs[0].Event.KeyEvent.bKeyDown)
 226                         {
 227                                 ch = recs[0].Event.KeyEvent.uChar.AsciiChar;
 228
 229                                 switch (ch)
 230                                 {
 231                                         case '\r':
 232                                                 WriteFile(houtput, "\r\n", 2, &dummy, NULL);
 233
 234                                                 if (len)
 235                                                 {
 236                                                         text[len] = 0;
 237                                                         len = 0;
 238                                                         return text;
 239                                                 }
 240
 241                                                 break;
 242
 243                                         case '\b':
 244                                                 WriteFile(houtput, "\b \b", 3, &dummy, NULL);
 245                                                 if (len)
 246                                                 {
 247                                                         len--;
 248                                                 }
 249                                                 break;
 250
 251                                         default:
 252                                                 if (ch >= ' ')
 253                                                 {
 254                                                         WriteFile(houtput, &ch, 1, &dummy, NULL);
 255                                                         text[len] = ch;
 256                                                         len = (len + 1) & 0xff;
 257                                                 }
 258
 259                                                 break;
 260
 261                                 }
 262                         }
 263                 }
 264         }
 265
 266         return NULL;
 267 }
 268
 269 void Sys_Sleep(int microseconds)
 270 {
 271         Sleep(microseconds / 1000);
 272 }
 273
 274 char *Sys_GetClipboardData (void)
 275 {
 276         char *data = NULL;
 277         char *cliptext;
 278
 279         if (OpenClipboard (NULL) != 0)
 280         {
 281                 HANDLE hClipboardData;
 282
 283                 if ((hClipboardData = GetClipboardData (CF_TEXT)) != 0)
 284                 {
 285                         if ((cliptext = GlobalLock (hClipboardData)) != 0)
 286                         {
 287                                 size_t allocsize;
 288                                 allocsize = GlobalSize (hClipboardData) + 1;
 289                                 data = Z_Malloc (allocsize);
 290                                 strlcpy (data, cliptext, allocsize);
 291                                 GlobalUnlock (hClipboardData);
 292                         }
 293                 }
 294                 CloseClipboard ();
 295         }
 296         return data;
 297 }
 298
 299 void Sys_InitConsole (void)
 300 {
 301         int t;
 302
 303         // initialize the windows dedicated server console if needed
 304         tevent = CreateEvent(NULL, false, false, NULL);
 305
 306         if (!tevent)
 307                 Sys_Error ("Couldn't create event");
 308
 309         houtput = GetStdHandle (STD_OUTPUT_HANDLE);
 310         hinput = GetStdHandle (STD_INPUT_HANDLE);
 311
 312         // LordHavoc: can't check cls.state because it hasn't been initialized yet
 313         // if (cls.state == ca_dedicated)
 314         if (COM_CheckParm("-dedicated"))
 315         {
 316                 if ((houtput == 0) || (houtput == INVALID_HANDLE_VALUE))
 317                 {
 318                     AllocConsole ();
 319                     houtput = GetStdHandle (STD_OUTPUT_HANDLE);
 320                     hinput = GetStdHandle (STD_INPUT_HANDLE);
 321                 }
 322                 if ((houtput == 0) || (houtput == INVALID_HANDLE_VALUE))
 323                         Sys_Error ("Couldn't create dedicated server console");
 324
 325
 326 #ifdef _WIN64
 327 #define atoi _atoi64
 328 #endif
 329         // give QHOST a chance to hook into the console
 330                 if ((t = COM_CheckParm ("-HFILE")) > 0)
 331                 {
 332                         if (t < com_argc)
 333                                 hFile = (HANDLE)atoi (com_argv[t+1]);
 334                 }
 335
 336                 if ((t = COM_CheckParm ("-HPARENT")) > 0)
 337                 {
 338                         if (t < com_argc)
 339                                 heventParent = (HANDLE)atoi (com_argv[t+1]);
 340                 }
 341
 342                 if ((t = COM_CheckParm ("-HCHILD")) > 0)
 343                 {
 344                         if (t < com_argc)
 345                                 heventChild = (HANDLE)atoi (com_argv[t+1]);
 346                 }
 347
 348                 InitConProc (hFile, heventParent, heventChild);
 349         }
 350
 351 // because sound is off until we become active
 352         S_BlockSound ();
 353 }
 354
 355 void Sys_Init_Commands (void)
 356 {
 357         Cvar_RegisterVariable(&sys_usetimegettime);
 358 }
 359
 360 /*
 361 ==============================================================================
 362
 363 WINDOWS CRAP
 364
 365 ==============================================================================
 366 */
 367
 368
 369 /*
 370 ==================
 371 WinMain
 372 ==================
 373 */
 374 HINSTANCE       global_hInstance;
 375 const char      *argv[MAX_NUM_ARGVS];
 376 char            program_name[MAX_OSPATH];
 377
 378 int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
 379 {
 380         MEMORYSTATUS lpBuffer;
 381
 382         /* previous instances do not exist in Win32 */
 383         if (hPrevInstance)
 384                 return 0;
 385
 386         global_hInstance = hInstance;
 387
 388         lpBuffer.dwLength = sizeof(MEMORYSTATUS);
 389         GlobalMemoryStatus (&lpBuffer);
 390
 391         program_name[sizeof(program_name)-1] = 0;
 392         GetModuleFileNameA(NULL, program_name, sizeof(program_name) - 1);
 393
 394         com_argc = 1;
 395         com_argv = argv;
 396         argv[0] = program_name;
 397
 398         // FIXME: this tokenizer is rather redundent, call a more general one
 399         while (*lpCmdLine && (com_argc < MAX_NUM_ARGVS))
 400         {
 401                 while (*lpCmdLine && *lpCmdLine <= ' ')
 402                         lpCmdLine++;
 403
 404                 if (!*lpCmdLine)
 405                         break;
 406
 407                 if (*lpCmdLine == '\"')
 408                 {
 409                         // quoted string
 410                         lpCmdLine++;
 411                         argv[com_argc] = lpCmdLine;
 412                         com_argc++;
 413                         while (*lpCmdLine && (*lpCmdLine != '\"'))
 414                                 lpCmdLine++;
 415                 }
 416                 else
 417                 {
 418                         // unquoted word
 419                         argv[com_argc] = lpCmdLine;
 420                         com_argc++;
 421                         while (*lpCmdLine && *lpCmdLine > ' ')
 422                                 lpCmdLine++;
 423                 }
 424
 425                 if (*lpCmdLine)
 426                 {
 427                         *lpCmdLine = 0;
 428                         lpCmdLine++;
 429                 }
 430         }
 431
 432         Host_Main();
 433
 434         /* return success of application */
 435         return true;
 436 }
 437
 438 int main (int argc, const char* argv[])
 439 {
 440         MEMORYSTATUS lpBuffer;
 441
 442         global_hInstance = GetModuleHandle (0);
 443
 444         lpBuffer.dwLength = sizeof(MEMORYSTATUS);
 445         GlobalMemoryStatus (&lpBuffer);
 446
 447         program_name[sizeof(program_name)-1] = 0;
 448         GetModuleFileNameA(NULL, program_name, sizeof(program_name) - 1);
 449
 450         com_argc = argc;
 451         com_argv = argv;
 452
 453         Host_Main();
 454
 455         return true;
 456 }