Two new cvars for blood particles: decal alpha, decal random scaling (min/max)
[divverent/darkplaces.git] / 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 #ifdef SUPPORTDIRECTX
26 #include <dsound.h>
27 #endif
28 #include "errno.h"
29 #include "resource.h"
30 #include "conproc.h"
31 #include "direct.h"
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 #ifdef QHOST
38 static HANDLE   tevent;
39 static HANDLE   hFile;
40 static HANDLE   heventParent;
41 static HANDLE   heventChild;
42 #endif
43
44
45 /*
46 ===============================================================================
47
48 SYSTEM IO
49
50 ===============================================================================
51 */
52
53 void Sys_Error (const char *error, ...)
54 {
55         va_list         argptr;
56         char            text[MAX_INPUTLINE];
57         static int      in_sys_error0 = 0;
58         static int      in_sys_error1 = 0;
59         static int      in_sys_error2 = 0;
60         static int      in_sys_error3 = 0;
61
62         va_start (argptr, error);
63         dpvsnprintf (text, sizeof (text), error, argptr);
64         va_end (argptr);
65
66         Con_Printf ("Quake Error: %s\n", text);
67
68         // close video so the message box is visible, unless we already tried that
69         if (!in_sys_error0 && cls.state != ca_dedicated)
70         {
71                 in_sys_error0 = 1;
72                 VID_Shutdown();
73         }
74
75         if (!in_sys_error3 && cls.state != ca_dedicated)
76         {
77                 in_sys_error3 = true;
78                 MessageBox(NULL, text, "Quake Error", MB_OK | MB_SETFOREGROUND | MB_ICONSTOP);
79         }
80
81         if (!in_sys_error1)
82         {
83                 in_sys_error1 = 1;
84                 Host_Shutdown ();
85         }
86
87 // shut down QHOST hooks if necessary
88         if (!in_sys_error2)
89         {
90                 in_sys_error2 = 1;
91                 Sys_Shutdown ();
92         }
93
94         exit (1);
95 }
96
97 void Sys_Shutdown (void)
98 {
99 #ifdef QHOST
100         if (tevent)
101                 CloseHandle (tevent);
102 #endif
103
104         if (cls.state == ca_dedicated)
105                 FreeConsole ();
106
107 #ifdef QHOST
108 // shut down QHOST hooks if necessary
109         DeinitConProc ();
110 #endif
111 }
112
113 void Sys_PrintToTerminal(const char *text)
114 {
115         DWORD dummy;
116         extern HANDLE houtput;
117
118         if ((houtput != 0) && (houtput != INVALID_HANDLE_VALUE))
119                 WriteFile(houtput, text, (DWORD) strlen(text), &dummy, NULL);
120 }
121
122 /*
123 ================
124 Sys_DoubleTime
125 ================
126 */
127 double Sys_DoubleTime (void)
128 {
129         static int first = true;
130         static double oldtime = 0.0, curtime = 0.0;
131         double newtime;
132         // LordHavoc: note to people modifying this code, DWORD is specifically defined as an unsigned 32bit number, therefore the 65536.0 * 65536.0 is fine.
133         if (sys_usetimegettime.integer)
134         {
135                 static int firsttimegettime = true;
136                 // timeGetTime
137                 // platform:
138                 // Windows 95/98/ME/NT/2000/XP
139                 // features:
140                 // reasonable accuracy (millisecond)
141                 // issues:
142                 // wraps around every 47 days or so (but this is non-fatal to us, odd times are rejected, only causes a one frame stutter)
143
144                 // make sure the timer is high precision, otherwise different versions of windows have varying accuracy
145                 if (firsttimegettime)
146                 {
147                         timeBeginPeriod (1);
148                         firsttimegettime = false;
149                 }
150
151                 newtime = (double) timeGetTime () / 1000.0;
152         }
153         else
154         {
155                 // QueryPerformanceCounter
156                 // platform:
157                 // Windows 95/98/ME/NT/2000/XP
158                 // features:
159                 // very accurate (CPU cycles)
160                 // known issues:
161                 // does not necessarily match realtime too well (tends to get faster and faster in win98)
162                 // wraps around occasionally on some platforms (depends on CPU speed and probably other unknown factors)
163                 double timescale;
164                 LARGE_INTEGER PerformanceFreq;
165                 LARGE_INTEGER PerformanceCount;
166
167                 if (!QueryPerformanceFrequency (&PerformanceFreq))
168                 {
169                         Con_Printf ("No hardware timer available\n");
170                         // fall back to timeGetTime
171                         Cvar_SetValueQuick(&sys_usetimegettime, true);
172                         return Sys_DoubleTime();
173                 }
174                 QueryPerformanceCounter (&PerformanceCount);
175
176                 #ifdef __BORLANDC__
177                 timescale = 1.0 / ((double) PerformanceFreq.u.LowPart + (double) PerformanceFreq.u.HighPart * 65536.0 * 65536.0);
178                 newtime = ((double) PerformanceCount.u.LowPart + (double) PerformanceCount.u.HighPart * 65536.0 * 65536.0) * timescale;
179                 #else
180                 timescale = 1.0 / ((double) PerformanceFreq.LowPart + (double) PerformanceFreq.HighPart * 65536.0 * 65536.0);
181                 newtime = ((double) PerformanceCount.LowPart + (double) PerformanceCount.HighPart * 65536.0 * 65536.0) * timescale;
182                 #endif
183         }
184
185         if (first)
186         {
187                 first = false;
188                 oldtime = newtime;
189         }
190
191         if (newtime < oldtime)
192         {
193                 // warn if it's significant
194                 if (newtime - oldtime < -0.01)
195                         Con_Printf("Sys_DoubleTime: time stepped backwards (went from %f to %f, difference %f)\n", oldtime, newtime, newtime - oldtime);
196         }
197         else if (newtime > oldtime + 1800)
198         {
199                 Con_Printf("Sys_DoubleTime: time stepped forward (went from %f to %f, difference %f)\n", oldtime, newtime, newtime - oldtime);
200         }
201         else
202                 curtime += newtime - oldtime;
203         oldtime = newtime;
204
205         return curtime;
206 }
207
208
209 char *Sys_ConsoleInput (void)
210 {
211         static char text[MAX_INPUTLINE];
212         static int len;
213         INPUT_RECORD recs[1024];
214         int ch;
215         DWORD numread, numevents, dummy;
216
217         if (cls.state != ca_dedicated)
218                 return NULL;
219
220         for ( ;; )
221         {
222                 if (!GetNumberOfConsoleInputEvents (hinput, &numevents))
223                 {
224                         cls.state = ca_disconnected;
225                         Sys_Error ("Error getting # of console events (error code %x)", (unsigned int)GetLastError());
226                 }
227
228                 if (numevents <= 0)
229                         break;
230
231                 if (!ReadConsoleInput(hinput, recs, 1, &numread))
232                 {
233                         cls.state = ca_disconnected;
234                         Sys_Error ("Error reading console input (error code %x)", (unsigned int)GetLastError());
235                 }
236
237                 if (numread != 1)
238                 {
239                         cls.state = ca_disconnected;
240                         Sys_Error ("Couldn't read console input (error code %x)", (unsigned int)GetLastError());
241                 }
242
243                 if (recs[0].EventType == KEY_EVENT)
244                 {
245                         if (!recs[0].Event.KeyEvent.bKeyDown)
246                         {
247                                 ch = recs[0].Event.KeyEvent.uChar.AsciiChar;
248
249                                 switch (ch)
250                                 {
251                                         case '\r':
252                                                 WriteFile(houtput, "\r\n", 2, &dummy, NULL);
253
254                                                 if (len)
255                                                 {
256                                                         text[len] = 0;
257                                                         len = 0;
258                                                         return text;
259                                                 }
260
261                                                 break;
262
263                                         case '\b':
264                                                 WriteFile(houtput, "\b \b", 3, &dummy, NULL);
265                                                 if (len)
266                                                 {
267                                                         len--;
268                                                 }
269                                                 break;
270
271                                         default:
272                                                 if (ch >= (int) (unsigned char) ' ')
273                                                 {
274                                                         WriteFile(houtput, &ch, 1, &dummy, NULL);
275                                                         text[len] = ch;
276                                                         len = (len + 1) & 0xff;
277                                                 }
278
279                                                 break;
280
281                                 }
282                         }
283                 }
284         }
285
286         return NULL;
287 }
288
289 void Sys_Sleep(int microseconds)
290 {
291         Sleep(microseconds / 1000);
292 }
293
294 char *Sys_GetClipboardData (void)
295 {
296         char *data = NULL;
297         char *cliptext;
298
299         if (OpenClipboard (NULL) != 0)
300         {
301                 HANDLE hClipboardData;
302
303                 if ((hClipboardData = GetClipboardData (CF_TEXT)) != 0)
304                 {
305                         if ((cliptext = (char *)GlobalLock (hClipboardData)) != 0)
306                         {
307                                 size_t allocsize;
308                                 allocsize = GlobalSize (hClipboardData) + 1;
309                                 data = (char *)Z_Malloc (allocsize);
310                                 strlcpy (data, cliptext, allocsize);
311                                 GlobalUnlock (hClipboardData);
312                         }
313                 }
314                 CloseClipboard ();
315         }
316         return data;
317 }
318
319 void Sys_InitConsole (void)
320 {
321 #ifdef QHOST
322         int t;
323
324         // initialize the windows dedicated server console if needed
325         tevent = CreateEvent(NULL, false, false, NULL);
326
327         if (!tevent)
328                 Sys_Error ("Couldn't create event");
329 #endif
330
331         houtput = GetStdHandle (STD_OUTPUT_HANDLE);
332         hinput = GetStdHandle (STD_INPUT_HANDLE);
333
334         // LordHavoc: can't check cls.state because it hasn't been initialized yet
335         // if (cls.state == ca_dedicated)
336         if (COM_CheckParm("-dedicated"))
337         {
338                 //if ((houtput == 0) || (houtput == INVALID_HANDLE_VALUE)) // LordHavoc: on Windows XP this is never 0 or invalid, but hinput is invalid
339                 {
340                         if (!AllocConsole ())
341                                 Sys_Error ("Couldn't create dedicated server console (error code %x)", (unsigned int)GetLastError());
342                         houtput = GetStdHandle (STD_OUTPUT_HANDLE);
343                         hinput = GetStdHandle (STD_INPUT_HANDLE);
344                 }
345                 if ((houtput == 0) || (houtput == INVALID_HANDLE_VALUE))
346                         Sys_Error ("Couldn't create dedicated server console");
347
348
349 #ifdef QHOST
350 #ifdef _WIN64
351 #define atoi _atoi64
352 #endif
353         // give QHOST a chance to hook into the console
354                 if ((t = COM_CheckParm ("-HFILE")) > 0)
355                 {
356                         if (t < com_argc)
357                                 hFile = (HANDLE)atoi (com_argv[t+1]);
358                 }
359
360                 if ((t = COM_CheckParm ("-HPARENT")) > 0)
361                 {
362                         if (t < com_argc)
363                                 heventParent = (HANDLE)atoi (com_argv[t+1]);
364                 }
365
366                 if ((t = COM_CheckParm ("-HCHILD")) > 0)
367                 {
368                         if (t < com_argc)
369                                 heventChild = (HANDLE)atoi (com_argv[t+1]);
370                 }
371
372                 InitConProc (hFile, heventParent, heventChild);
373 #endif
374         }
375
376 // because sound is off until we become active
377         S_BlockSound ();
378 }
379
380 void Sys_Init_Commands (void)
381 {
382         Cvar_RegisterVariable(&sys_usetimegettime);
383 }
384
385 /*
386 ==============================================================================
387
388 WINDOWS CRAP
389
390 ==============================================================================
391 */
392
393
394 /*
395 ==================
396 WinMain
397 ==================
398 */
399 HINSTANCE       global_hInstance;
400 const char      *argv[MAX_NUM_ARGVS];
401 char            program_name[MAX_OSPATH];
402
403 int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
404 {
405         MEMORYSTATUS lpBuffer;
406
407         /* previous instances do not exist in Win32 */
408         if (hPrevInstance)
409                 return 0;
410
411         global_hInstance = hInstance;
412
413         lpBuffer.dwLength = sizeof(MEMORYSTATUS);
414         GlobalMemoryStatus (&lpBuffer);
415
416         program_name[sizeof(program_name)-1] = 0;
417         GetModuleFileNameA(NULL, program_name, sizeof(program_name) - 1);
418
419         com_argc = 1;
420         com_argv = argv;
421         argv[0] = program_name;
422
423         // FIXME: this tokenizer is rather redundent, call a more general one
424         while (*lpCmdLine && (com_argc < MAX_NUM_ARGVS))
425         {
426                 while (*lpCmdLine && ISWHITESPACE(*lpCmdLine))
427                         lpCmdLine++;
428
429                 if (!*lpCmdLine)
430                         break;
431
432                 if (*lpCmdLine == '\"')
433                 {
434                         // quoted string
435                         lpCmdLine++;
436                         argv[com_argc] = lpCmdLine;
437                         com_argc++;
438                         while (*lpCmdLine && (*lpCmdLine != '\"'))
439                                 lpCmdLine++;
440                 }
441                 else
442                 {
443                         // unquoted word
444                         argv[com_argc] = lpCmdLine;
445                         com_argc++;
446                         while (*lpCmdLine && !ISWHITESPACE(*lpCmdLine))
447                                 lpCmdLine++;
448                 }
449
450                 if (*lpCmdLine)
451                 {
452                         *lpCmdLine = 0;
453                         lpCmdLine++;
454                 }
455         }
456
457         Host_Main();
458
459         /* return success of application */
460         return true;
461 }
462
463 #if 0
464 // unused, this file is only used when building windows client and vid_wgl provides WinMain() instead
465 int main (int argc, const char* argv[])
466 {
467         MEMORYSTATUS lpBuffer;
468
469         global_hInstance = GetModuleHandle (0);
470
471         lpBuffer.dwLength = sizeof(MEMORYSTATUS);
472         GlobalMemoryStatus (&lpBuffer);
473
474         program_name[sizeof(program_name)-1] = 0;
475         GetModuleFileNameA(NULL, program_name, sizeof(program_name) - 1);
476
477         com_argc = argc;
478         com_argv = argv;
479
480         Host_Main();
481
482         return true;
483 }
484 #endif
485