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 HANDLE                          hinput, houtput;
  35
  36 static HANDLE   tevent;
  37 static HANDLE   hFile;
  38 static HANDLE   heventParent;
  39 static HANDLE   heventChild;
  40
  41
  42 /*
  43 ===============================================================================
  44
  45 SYSTEM IO
  46
  47 ===============================================================================
  48 */
  49
  50 void Sys_Error (const char *error, ...)
  51 {
  52         va_list         argptr;
  53         char            text[1024];
  54         static int      in_sys_error0 = 0;
  55         static int      in_sys_error1 = 0;
  56         static int      in_sys_error2 = 0;
  57         static int      in_sys_error3 = 0;
  58
  59         va_start (argptr, error);
  60         dpvsnprintf (text, sizeof (text), error, argptr);
  61         va_end (argptr);
  62
  63         Con_Printf ("Quake Error: %s\n", text);
  64
  65         // close video so the message box is visible, unless we already tried that
  66         if (!in_sys_error0 && cls.state != ca_dedicated)
  67         {
  68                 in_sys_error0 = 1;
  69                 VID_Shutdown();
  70         }
  71
  72         if (!in_sys_error3 && cls.state != ca_dedicated)
  73         {
  74                 in_sys_error3 = true;
  75                 MessageBox(NULL, text, "Quake Error", MB_OK | MB_SETFOREGROUND | MB_ICONSTOP);
  76         }
  77
  78         if (!in_sys_error1)
  79         {
  80                 in_sys_error1 = 1;
  81                 Host_Shutdown ();
  82         }
  83
  84 // shut down QHOST hooks if necessary
  85         if (!in_sys_error2)
  86         {
  87                 in_sys_error2 = 1;
  88                 Sys_Shutdown ();
  89         }
  90
  91         exit (1);
  92 }
  93
  94 void Sys_Shutdown (void)
  95 {
  96         if (tevent)
  97                 CloseHandle (tevent);
  98
  99         if (cls.state == ca_dedicated)
 100                 FreeConsole ();
 101
 102 // shut down QHOST hooks if necessary
 103         DeinitConProc ();
 104 }
 105
 106 void Sys_PrintToTerminal(const char *text)
 107 {
 108         DWORD dummy;
 109         extern HANDLE houtput;
 110         if (cls.state == ca_dedicated)
 111                 WriteFile(houtput, text, 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                         Sys_Error ("No hardware timer available");
 161                 QueryPerformanceCounter (&PerformanceCount);
 162
 163                 #ifdef __BORLANDC__
 164                 timescale = 1.0 / ((double) PerformanceFreq.u.LowPart + (double) PerformanceFreq.u.HighPart * 65536.0 * 65536.0);
 165                 newtime = ((double) PerformanceCount.u.LowPart + (double) PerformanceCount.u.HighPart * 65536.0 * 65536.0) * timescale;
 166                 #else
 167                 timescale = 1.0 / ((double) PerformanceFreq.LowPart + (double) PerformanceFreq.HighPart * 65536.0 * 65536.0);
 168                 newtime = ((double) PerformanceCount.LowPart + (double) PerformanceCount.HighPart * 65536.0 * 65536.0) * timescale;
 169                 #endif
 170         }
 171
 172         if (first)
 173         {
 174                 first = false;
 175                 oldtime = newtime;
 176         }
 177
 178         if (newtime < oldtime)
 179         {
 180                 // warn if it's significant
 181                 if (newtime - oldtime < -0.01)
 182                         Con_Printf("Sys_DoubleTime: time stepped backwards (went from %f to %f, difference %f)\n", oldtime, newtime, newtime - oldtime);
 183         }
 184         else
 185                 curtime += newtime - oldtime;
 186         oldtime = newtime;
 187
 188         return curtime;
 189 }
 190
 191
 192 char *Sys_ConsoleInput (void)
 193 {
 194         static char text[256];
 195         static int len;
 196         INPUT_RECORD recs[1024];
 197         int ch;
 198         DWORD numread, numevents, dummy;
 199
 200         if (cls.state != ca_dedicated)
 201                 return NULL;
 202
 203
 204         for ( ;; )
 205         {
 206                 if (!GetNumberOfConsoleInputEvents (hinput, &numevents))
 207                         Sys_Error ("Error getting # of console events");
 208
 209                 if (numevents <= 0)
 210                         break;
 211
 212                 if (!ReadConsoleInput(hinput, recs, 1, &numread))
 213                         Sys_Error ("Error reading console input");
 214
 215                 if (numread != 1)
 216                         Sys_Error ("Couldn't read console input");
 217
 218                 if (recs[0].EventType == KEY_EVENT)
 219                 {
 220                         if (!recs[0].Event.KeyEvent.bKeyDown)
 221                         {
 222                                 ch = recs[0].Event.KeyEvent.uChar.AsciiChar;
 223
 224                                 switch (ch)
 225                                 {
 226                                         case '\r':
 227                                                 WriteFile(houtput, "\r\n", 2, &dummy, NULL);
 228
 229                                                 if (len)
 230                                                 {
 231                                                         text[len] = 0;
 232                                                         len = 0;
 233                                                         return text;
 234                                                 }
 235
 236                                                 break;
 237
 238                                         case '\b':
 239                                                 WriteFile(houtput, "\b \b", 3, &dummy, NULL);
 240                                                 if (len)
 241                                                 {
 242                                                         len--;
 243                                                 }
 244                                                 break;
 245
 246                                         default:
 247                                                 if (ch >= ' ')
 248                                                 {
 249                                                         WriteFile(houtput, &ch, 1, &dummy, NULL);
 250                                                         text[len] = ch;
 251                                                         len = (len + 1) & 0xff;
 252                                                 }
 253
 254                                                 break;
 255
 256                                 }
 257                         }
 258                 }
 259         }
 260
 261         return NULL;
 262 }
 263
 264 void Sys_Sleep(int milliseconds)
 265 {
 266         if (milliseconds < 1)
 267                 milliseconds = 1;
 268         Sleep(milliseconds);
 269 }
 270
 271 char *Sys_GetClipboardData (void)
 272 {
 273         char *data = NULL;
 274         char *cliptext;
 275
 276         if (OpenClipboard (NULL) != 0)
 277         {
 278                 HANDLE hClipboardData;
 279
 280                 if ((hClipboardData = GetClipboardData (CF_TEXT)) != 0)
 281                 {
 282                         if ((cliptext = GlobalLock (hClipboardData)) != 0)
 283                         {
 284                                 data = malloc (GlobalSize(hClipboardData)+1);
 285                                 strcpy (data, cliptext);
 286                                 GlobalUnlock (hClipboardData);
 287                         }
 288                 }
 289                 CloseClipboard ();
 290         }
 291         return data;
 292 }
 293
 294 /*
 295 ==============================================================================
 296
 297 WINDOWS CRAP
 298
 299 ==============================================================================
 300 */
 301
 302
 303 /*
 304 ==================
 305 WinMain
 306 ==================
 307 */
 308 HINSTANCE       global_hInstance;
 309 const char      *argv[MAX_NUM_ARGVS];
 310 char            program_name[MAX_OSPATH];
 311
 312 int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
 313 {
 314         double frameoldtime, framenewtime;
 315         MEMORYSTATUS lpBuffer;
 316         int t;
 317
 318         /* previous instances do not exist in Win32 */
 319         if (hPrevInstance)
 320                 return 0;
 321
 322         global_hInstance = hInstance;
 323
 324         lpBuffer.dwLength = sizeof(MEMORYSTATUS);
 325         GlobalMemoryStatus (&lpBuffer);
 326
 327         program_name[sizeof(program_name)-1] = 0;
 328         GetModuleFileNameA(NULL, program_name, sizeof(program_name) - 1);
 329
 330         com_argc = 1;
 331         com_argv = argv;
 332         argv[0] = program_name;
 333
 334         // FIXME: this tokenizer is rather redundent, call a more general one
 335         while (*lpCmdLine && (com_argc < MAX_NUM_ARGVS))
 336         {
 337                 while (*lpCmdLine && *lpCmdLine <= ' ')
 338                         lpCmdLine++;
 339
 340                 if (!*lpCmdLine)
 341                         break;
 342
 343                 if (*lpCmdLine == '\"')
 344                 {
 345                         // quoted string
 346                         lpCmdLine++;
 347                         argv[com_argc] = lpCmdLine;
 348                         com_argc++;
 349                         while (*lpCmdLine && (*lpCmdLine != '\"'))
 350                                 lpCmdLine++;
 351                 }
 352                 else
 353                 {
 354                         // unquoted word
 355                         argv[com_argc] = lpCmdLine;
 356                         com_argc++;
 357                         while (*lpCmdLine && *lpCmdLine > ' ')
 358                                 lpCmdLine++;
 359                 }
 360
 361                 if (*lpCmdLine)
 362                 {
 363                         *lpCmdLine = 0;
 364                         lpCmdLine++;
 365                 }
 366         }
 367
 368         Sys_Shared_EarlyInit();
 369
 370         Cvar_RegisterVariable(&sys_usetimegettime);
 371
 372         tevent = CreateEvent(NULL, false, false, NULL);
 373
 374         if (!tevent)
 375                 Sys_Error ("Couldn't create event");
 376
 377         // LordHavoc: can't check cls.state because it hasn't been initialized yet
 378         // if (cls.state == ca_dedicated)
 379         if (COM_CheckParm("-dedicated"))
 380         {
 381                 if (!AllocConsole ())
 382                         Sys_Error ("Couldn't create dedicated server console");
 383
 384                 hinput = GetStdHandle (STD_INPUT_HANDLE);
 385                 houtput = GetStdHandle (STD_OUTPUT_HANDLE);
 386
 387         // give QHOST a chance to hook into the console
 388                 if ((t = COM_CheckParm ("-HFILE")) > 0)
 389                 {
 390                         if (t < com_argc)
 391                                 hFile = (HANDLE)atoi (com_argv[t+1]);
 392                 }
 393
 394                 if ((t = COM_CheckParm ("-HPARENT")) > 0)
 395                 {
 396                         if (t < com_argc)
 397                                 heventParent = (HANDLE)atoi (com_argv[t+1]);
 398                 }
 399
 400                 if ((t = COM_CheckParm ("-HCHILD")) > 0)
 401                 {
 402                         if (t < com_argc)
 403                                 heventChild = (HANDLE)atoi (com_argv[t+1]);
 404                 }
 405
 406                 InitConProc (hFile, heventParent, heventChild);
 407         }
 408
 409 // because sound is off until we become active
 410         S_BlockSound ();
 411
 412         Host_Init ();
 413
 414         Sys_Shared_LateInit();
 415
 416         frameoldtime = Sys_DoubleTime ();
 417
 418         /* main window message loop */
 419         while (1)
 420         {
 421                 framenewtime = Sys_DoubleTime ();
 422                 Host_Frame (framenewtime - frameoldtime);
 423                 frameoldtime = framenewtime;
 424         }
 425
 426         /* return success of application */
 427         return true;
 428 }