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         if (cls.state == ca_dedicated)
 110                 WriteFile(houtput, text, (DWORD) strlen(text), &dummy, NULL);
 111 }
 112
 113 /*
 114 ================
 115 Sys_DoubleTime
 116 ================
 117 */
 118 double Sys_DoubleTime (void)
 119 {
 120         static int first = true;
 121         static double oldtime = 0.0, curtime = 0.0;
 122         double newtime;
 123         // LordHavoc: note to people modifying this code, DWORD is specifically defined as an unsigned 32bit number, therefore the 65536.0 * 65536.0 is fine.
 124         if (sys_usetimegettime.integer)
 125         {
 126                 static int firsttimegettime = true;
 127                 // timeGetTime
 128                 // platform:
 129                 // Windows 95/98/ME/NT/2000/XP
 130                 // features:
 131                 // reasonable accuracy (millisecond)
 132                 // issues:
 133                 // wraps around every 47 days or so (but this is non-fatal to us, odd times are rejected, only causes a one frame stutter)
 134
 135                 // make sure the timer is high precision, otherwise different versions of windows have varying accuracy
 136                 if (firsttimegettime)
 137                 {
 138                         timeBeginPeriod (1);
 139                         firsttimegettime = false;
 140                 }
 141
 142                 newtime = (double) timeGetTime () / 1000.0;
 143         }
 144         else
 145         {
 146                 // QueryPerformanceCounter
 147                 // platform:
 148                 // Windows 95/98/ME/NT/2000/XP
 149                 // features:
 150                 // very accurate (CPU cycles)
 151                 // known issues:
 152                 // does not necessarily match realtime too well (tends to get faster and faster in win98)
 153                 // wraps around occasionally on some platforms (depends on CPU speed and probably other unknown factors)
 154                 double timescale;
 155                 LARGE_INTEGER PerformanceFreq;
 156                 LARGE_INTEGER PerformanceCount;
 157
 158                 if (!QueryPerformanceFrequency (&PerformanceFreq))
 159                 {
 160                         Con_Printf ("No hardware timer available\n");
 161                         // fall back to timeGetTime
 162                         Cvar_SetValueQuick(&sys_usetimegettime, true);
 163                         return Sys_DoubleTime();
 164                 }
 165                 QueryPerformanceCounter (&PerformanceCount);
 166
 167                 #ifdef __BORLANDC__
 168                 timescale = 1.0 / ((double) PerformanceFreq.u.LowPart + (double) PerformanceFreq.u.HighPart * 65536.0 * 65536.0);
 169                 newtime = ((double) PerformanceCount.u.LowPart + (double) PerformanceCount.u.HighPart * 65536.0 * 65536.0) * timescale;
 170                 #else
 171                 timescale = 1.0 / ((double) PerformanceFreq.LowPart + (double) PerformanceFreq.HighPart * 65536.0 * 65536.0);
 172                 newtime = ((double) PerformanceCount.LowPart + (double) PerformanceCount.HighPart * 65536.0 * 65536.0) * timescale;
 173                 #endif
 174         }
 175
 176         if (first)
 177         {
 178                 first = false;
 179                 oldtime = newtime;
 180         }
 181
 182         if (newtime < oldtime)
 183         {
 184                 // warn if it's significant
 185                 if (newtime - oldtime < -0.01)
 186                         Con_Printf("Sys_DoubleTime: time stepped backwards (went from %f to %f, difference %f)\n", oldtime, newtime, newtime - oldtime);
 187         }
 188         else
 189                 curtime += newtime - oldtime;
 190         oldtime = newtime;
 191
 192         return curtime;
 193 }
 194
 195
 196 char *Sys_ConsoleInput (void)
 197 {
 198         static char text[MAX_INPUTLINE];
 199         static int len;
 200         INPUT_RECORD recs[1024];
 201         int ch;
 202         DWORD numread, numevents, dummy;
 203
 204         if (cls.state != ca_dedicated)
 205                 return NULL;
 206
 207
 208         for ( ;; )
 209         {
 210                 if (!GetNumberOfConsoleInputEvents (hinput, &numevents))
 211                         Sys_Error ("Error getting # of console events");
 212
 213                 if (numevents <= 0)
 214                         break;
 215
 216                 if (!ReadConsoleInput(hinput, recs, 1, &numread))
 217                         Sys_Error ("Error reading console input");
 218
 219                 if (numread != 1)
 220                         Sys_Error ("Couldn't read console input");
 221
 222                 if (recs[0].EventType == KEY_EVENT)
 223                 {
 224                         if (!recs[0].Event.KeyEvent.bKeyDown)
 225                         {
 226                                 ch = recs[0].Event.KeyEvent.uChar.AsciiChar;
 227
 228                                 switch (ch)
 229                                 {
 230                                         case '\r':
 231                                                 WriteFile(houtput, "\r\n", 2, &dummy, NULL);
 232
 233                                                 if (len)
 234                                                 {
 235                                                         text[len] = 0;
 236                                                         len = 0;
 237                                                         return text;
 238                                                 }
 239
 240                                                 break;
 241
 242                                         case '\b':
 243                                                 WriteFile(houtput, "\b \b", 3, &dummy, NULL);
 244                                                 if (len)
 245                                                 {
 246                                                         len--;
 247                                                 }
 248                                                 break;
 249
 250                                         default:
 251                                                 if (ch >= ' ')
 252                                                 {
 253                                                         WriteFile(houtput, &ch, 1, &dummy, NULL);
 254                                                         text[len] = ch;
 255                                                         len = (len + 1) & 0xff;
 256                                                 }
 257
 258                                                 break;
 259
 260                                 }
 261                         }
 262                 }
 263         }
 264
 265         return NULL;
 266 }
 267
 268 void Sys_Sleep(int milliseconds)
 269 {
 270         if (milliseconds < 1)
 271                 milliseconds = 1;
 272         Sleep(milliseconds);
 273 }
 274
 275 char *Sys_GetClipboardData (void)
 276 {
 277         char *data = NULL;
 278         char *cliptext;
 279
 280         if (OpenClipboard (NULL) != 0)
 281         {
 282                 HANDLE hClipboardData;
 283
 284                 if ((hClipboardData = GetClipboardData (CF_TEXT)) != 0)
 285                 {
 286                         if ((cliptext = GlobalLock (hClipboardData)) != 0)
 287                         {
 288                                 data = Z_Malloc (GlobalSize(hClipboardData)+1);
 289                                 strcpy (data, cliptext);
 290                                 GlobalUnlock (hClipboardData);
 291                         }
 292                 }
 293                 CloseClipboard ();
 294         }
 295         return data;
 296 }
 297
 298 void Sys_InitConsole (void)
 299 {
 300         int t;
 301
 302         // initialize the windows dedicated server console if needed
 303         tevent = CreateEvent(NULL, false, false, NULL);
 304
 305         if (!tevent)
 306                 Sys_Error ("Couldn't create event");
 307
 308         // LordHavoc: can't check cls.state because it hasn't been initialized yet
 309         // if (cls.state == ca_dedicated)
 310         if (COM_CheckParm("-dedicated"))
 311         {
 312                 if (!AllocConsole ())
 313                         Sys_Error ("Couldn't create dedicated server console");
 314
 315                 hinput = GetStdHandle (STD_INPUT_HANDLE);
 316                 houtput = GetStdHandle (STD_OUTPUT_HANDLE);
 317
 318 #ifdef _WIN64
 319 #define atoi _atoi64
 320 #endif
 321         // give QHOST a chance to hook into the console
 322                 if ((t = COM_CheckParm ("-HFILE")) > 0)
 323                 {
 324                         if (t < com_argc)
 325                                 hFile = (HANDLE)atoi (com_argv[t+1]);
 326                 }
 327
 328                 if ((t = COM_CheckParm ("-HPARENT")) > 0)
 329                 {
 330                         if (t < com_argc)
 331                                 heventParent = (HANDLE)atoi (com_argv[t+1]);
 332                 }
 333
 334                 if ((t = COM_CheckParm ("-HCHILD")) > 0)
 335                 {
 336                         if (t < com_argc)
 337                                 heventChild = (HANDLE)atoi (com_argv[t+1]);
 338                 }
 339
 340                 InitConProc (hFile, heventParent, heventChild);
 341         }
 342
 343 // because sound is off until we become active
 344         S_BlockSound ();
 345 }
 346
 347 void Sys_Init_Commands (void)
 348 {
 349         Cvar_RegisterVariable(&sys_usetimegettime);
 350 }
 351
 352 /*
 353 ==============================================================================
 354
 355 WINDOWS CRAP
 356
 357 ==============================================================================
 358 */
 359
 360
 361 /*
 362 ==================
 363 WinMain
 364 ==================
 365 */
 366 HINSTANCE       global_hInstance;
 367 const char      *argv[MAX_NUM_ARGVS];
 368 char            program_name[MAX_OSPATH];
 369
 370 int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
 371 {
 372         MEMORYSTATUS lpBuffer;
 373
 374         /* previous instances do not exist in Win32 */
 375         if (hPrevInstance)
 376                 return 0;
 377
 378         global_hInstance = hInstance;
 379
 380         lpBuffer.dwLength = sizeof(MEMORYSTATUS);
 381         GlobalMemoryStatus (&lpBuffer);
 382
 383         program_name[sizeof(program_name)-1] = 0;
 384         GetModuleFileNameA(NULL, program_name, sizeof(program_name) - 1);
 385
 386         com_argc = 1;
 387         com_argv = argv;
 388         argv[0] = program_name;
 389
 390         // FIXME: this tokenizer is rather redundent, call a more general one
 391         while (*lpCmdLine && (com_argc < MAX_NUM_ARGVS))
 392         {
 393                 while (*lpCmdLine && *lpCmdLine <= ' ')
 394                         lpCmdLine++;
 395
 396                 if (!*lpCmdLine)
 397                         break;
 398
 399                 if (*lpCmdLine == '\"')
 400                 {
 401                         // quoted string
 402                         lpCmdLine++;
 403                         argv[com_argc] = lpCmdLine;
 404                         com_argc++;
 405                         while (*lpCmdLine && (*lpCmdLine != '\"'))
 406                                 lpCmdLine++;
 407                 }
 408                 else
 409                 {
 410                         // unquoted word
 411                         argv[com_argc] = lpCmdLine;
 412                         com_argc++;
 413                         while (*lpCmdLine && *lpCmdLine > ' ')
 414                                 lpCmdLine++;
 415                 }
 416
 417                 if (*lpCmdLine)
 418                 {
 419                         *lpCmdLine = 0;
 420                         lpCmdLine++;
 421                 }
 422         }
 423
 424         Host_Main();
 425
 426         /* return success of application */
 427         return true;
 428 }