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 extern void S_BlockSound (void);
  32
  33 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)"};
  34
  35 HANDLE                          hinput, houtput;
  36
  37 static HANDLE   tevent;
  38 static HANDLE   hFile;
  39 static HANDLE   heventParent;
  40 static HANDLE   heventChild;
  41
  42
  43 /*
  44 ===============================================================================
  45
  46 SYSTEM IO
  47
  48 ===============================================================================
  49 */
  50
  51 void Sys_Error (const char *error, ...)
  52 {
  53         va_list         argptr;
  54         char            text[MAX_INPUTLINE];
  55         static int      in_sys_error0 = 0;
  56         static int      in_sys_error1 = 0;
  57         static int      in_sys_error2 = 0;
  58         static int      in_sys_error3 = 0;
  59
  60         va_start (argptr, error);
  61         dpvsnprintf (text, sizeof (text), error, argptr);
  62         va_end (argptr);
  63
  64         Con_Printf ("Quake Error: %s\n", text);
  65
  66         // close video so the message box is visible, unless we already tried that
  67         if (!in_sys_error0 && cls.state != ca_dedicated)
  68         {
  69                 in_sys_error0 = 1;
  70                 VID_Shutdown();
  71         }
  72
  73         if (!in_sys_error3 && cls.state != ca_dedicated)
  74         {
  75                 in_sys_error3 = true;
  76                 MessageBox(NULL, text, "Quake Error", MB_OK | MB_SETFOREGROUND | MB_ICONSTOP);
  77         }
  78
  79         if (!in_sys_error1)
  80         {
  81                 in_sys_error1 = 1;
  82                 Host_Shutdown ();
  83         }
  84
  85 // shut down QHOST hooks if necessary
  86         if (!in_sys_error2)
  87         {
  88                 in_sys_error2 = 1;
  89                 Sys_Shutdown ();
  90         }
  91
  92         exit (1);
  93 }
  94
  95 void Sys_Shutdown (void)
  96 {
  97         if (tevent)
  98                 CloseHandle (tevent);
  99
 100         if (cls.state == ca_dedicated)
 101                 FreeConsole ();
 102
 103 // shut down QHOST hooks if necessary
 104         DeinitConProc ();
 105 }
 106
 107 void Sys_PrintToTerminal(const char *text)
 108 {
 109         DWORD dummy;
 110         extern HANDLE houtput;
 111         if (cls.state == ca_dedicated)
 112                 WriteFile(houtput, text, (DWORD) strlen(text), &dummy, NULL);
 113 }
 114
 115 /*
 116 ================
 117 Sys_DoubleTime
 118 ================
 119 */
 120 double Sys_DoubleTime (void)
 121 {
 122         static int first = true;
 123         static double oldtime = 0.0, curtime = 0.0;
 124         double newtime;
 125         // LordHavoc: note to people modifying this code, DWORD is specifically defined as an unsigned 32bit number, therefore the 65536.0 * 65536.0 is fine.
 126         if (sys_usetimegettime.integer)
 127         {
 128                 static int firsttimegettime = true;
 129                 // timeGetTime
 130                 // platform:
 131                 // Windows 95/98/ME/NT/2000/XP
 132                 // features:
 133                 // reasonable accuracy (millisecond)
 134                 // issues:
 135                 // wraps around every 47 days or so (but this is non-fatal to us, odd times are rejected, only causes a one frame stutter)
 136
 137                 // make sure the timer is high precision, otherwise different versions of windows have varying accuracy
 138                 if (firsttimegettime)
 139                 {
 140                         timeBeginPeriod (1);
 141                         firsttimegettime = false;
 142                 }
 143
 144                 newtime = (double) timeGetTime () / 1000.0;
 145         }
 146         else
 147         {
 148                 // QueryPerformanceCounter
 149                 // platform:
 150                 // Windows 95/98/ME/NT/2000/XP
 151                 // features:
 152                 // very accurate (CPU cycles)
 153                 // known issues:
 154                 // does not necessarily match realtime too well (tends to get faster and faster in win98)
 155                 // wraps around occasionally on some platforms (depends on CPU speed and probably other unknown factors)
 156                 double timescale;
 157                 LARGE_INTEGER PerformanceFreq;
 158                 LARGE_INTEGER PerformanceCount;
 159
 160                 if (!QueryPerformanceFrequency (&PerformanceFreq))
 161                 {
 162                         Con_Printf ("No hardware timer available\n");
 163                         // fall back to timeGetTime
 164                         Cvar_SetValueQuick(&sys_usetimegettime, true);
 165                         return Sys_DoubleTime();
 166                 }
 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[MAX_INPUTLINE];
 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
 242                                                 break;
 243
 244                                         case '\b':
 245                                                 WriteFile(houtput, "\b \b", 3, &dummy, NULL);
 246                                                 if (len)
 247                                                 {
 248                                                         len--;
 249                                                 }
 250                                                 break;
 251
 252                                         default:
 253                                                 if (ch >= ' ')
 254                                                 {
 255                                                         WriteFile(houtput, &ch, 1, &dummy, NULL);
 256                                                         text[len] = ch;
 257                                                         len = (len + 1) & 0xff;
 258                                                 }
 259
 260                                                 break;
 261
 262                                 }
 263                         }
 264                 }
 265         }
 266
 267         return NULL;
 268 }
 269
 270 void Sys_Sleep(int milliseconds)
 271 {
 272         if (milliseconds < 1)
 273                 milliseconds = 1;
 274         Sleep(milliseconds);
 275 }
 276
 277 char *Sys_GetClipboardData (void)
 278 {
 279         char *data = NULL;
 280         char *cliptext;
 281
 282         if (OpenClipboard (NULL) != 0)
 283         {
 284                 HANDLE hClipboardData;
 285
 286                 if ((hClipboardData = GetClipboardData (CF_TEXT)) != 0)
 287                 {
 288                         if ((cliptext = GlobalLock (hClipboardData)) != 0)
 289                         {
 290                                 data = Z_Malloc (GlobalSize(hClipboardData)+1);
 291                                 strcpy (data, cliptext);
 292                                 GlobalUnlock (hClipboardData);
 293                         }
 294                 }
 295                 CloseClipboard ();
 296         }
 297         return data;
 298 }
 299
 300 void Sys_InitConsole (void)
 301 {
 302         int t;
 303
 304         // initialize the windows dedicated server console if needed
 305         tevent = CreateEvent(NULL, false, false, NULL);
 306
 307         if (!tevent)
 308                 Sys_Error ("Couldn't create event");
 309
 310         // LordHavoc: can't check cls.state because it hasn't been initialized yet
 311         // if (cls.state == ca_dedicated)
 312         if (COM_CheckParm("-dedicated"))
 313         {
 314                 if (!AllocConsole ())
 315                         Sys_Error ("Couldn't create dedicated server console");
 316
 317                 hinput = GetStdHandle (STD_INPUT_HANDLE);
 318                 houtput = GetStdHandle (STD_OUTPUT_HANDLE);
 319
 320 #ifdef _WIN64
 321 #define atoi _atoi64
 322 #endif
 323         // give QHOST a chance to hook into the console
 324                 if ((t = COM_CheckParm ("-HFILE")) > 0)
 325                 {
 326                         if (t < com_argc)
 327                                 hFile = (HANDLE)atoi (com_argv[t+1]);
 328                 }
 329
 330                 if ((t = COM_CheckParm ("-HPARENT")) > 0)
 331                 {
 332                         if (t < com_argc)
 333                                 heventParent = (HANDLE)atoi (com_argv[t+1]);
 334                 }
 335
 336                 if ((t = COM_CheckParm ("-HCHILD")) > 0)
 337                 {
 338                         if (t < com_argc)
 339                                 heventChild = (HANDLE)atoi (com_argv[t+1]);
 340                 }
 341
 342                 InitConProc (hFile, heventParent, heventChild);
 343         }
 344
 345 // because sound is off until we become active
 346         S_BlockSound ();
 347 }
 348
 349 void Sys_Init_Commands (void)
 350 {
 351         Cvar_RegisterVariable(&sys_usetimegettime);
 352 }
 353
 354 /*
 355 ==============================================================================
 356
 357 WINDOWS CRAP
 358
 359 ==============================================================================
 360 */
 361
 362
 363 /*
 364 ==================
 365 WinMain
 366 ==================
 367 */
 368 HINSTANCE       global_hInstance;
 369 const char      *argv[MAX_NUM_ARGVS];
 370 char            program_name[MAX_OSPATH];
 371
 372 int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
 373 {
 374         double frameoldtime, framenewtime;
 375         MEMORYSTATUS lpBuffer;
 376
 377         /* previous instances do not exist in Win32 */
 378         if (hPrevInstance)
 379                 return 0;
 380
 381         global_hInstance = hInstance;
 382
 383         lpBuffer.dwLength = sizeof(MEMORYSTATUS);
 384         GlobalMemoryStatus (&lpBuffer);
 385
 386         program_name[sizeof(program_name)-1] = 0;
 387         GetModuleFileNameA(NULL, program_name, sizeof(program_name) - 1);
 388
 389         com_argc = 1;
 390         com_argv = argv;
 391         argv[0] = program_name;
 392
 393         // FIXME: this tokenizer is rather redundent, call a more general one
 394         while (*lpCmdLine && (com_argc < MAX_NUM_ARGVS))
 395         {
 396                 while (*lpCmdLine && *lpCmdLine <= ' ')
 397                         lpCmdLine++;
 398
 399                 if (!*lpCmdLine)
 400                         break;
 401
 402                 if (*lpCmdLine == '\"')
 403                 {
 404                         // quoted string
 405                         lpCmdLine++;
 406                         argv[com_argc] = lpCmdLine;
 407                         com_argc++;
 408                         while (*lpCmdLine && (*lpCmdLine != '\"'))
 409                                 lpCmdLine++;
 410                 }
 411                 else
 412                 {
 413                         // unquoted word
 414                         argv[com_argc] = lpCmdLine;
 415                         com_argc++;
 416                         while (*lpCmdLine && *lpCmdLine > ' ')
 417                                 lpCmdLine++;
 418                 }
 419
 420                 if (*lpCmdLine)
 421                 {
 422                         *lpCmdLine = 0;
 423                         lpCmdLine++;
 424                 }
 425         }
 426
 427         Host_Init ();
 428
 429         frameoldtime = Sys_DoubleTime ();
 430
 431         /* main window message loop */
 432         while (1)
 433         {
 434                 framenewtime = Sys_DoubleTime ();
 435                 Host_Frame (framenewtime - frameoldtime);
 436                 frameoldtime = framenewtime;
 437         }
 438
 439         /* return success of application */
 440         return true;
 441 }