cl_demo.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
  21 #include "quakedef.h"
  22
  23 #ifdef CONFIG_VIDEO_CAPTURE
  24 extern cvar_t cl_capturevideo;
  25 extern cvar_t cl_capturevideo_demo_stop;
  26 #endif
  27
  28 static void CL_FinishTimeDemo (void);
  29
  30 /*
  31 ==============================================================================
  32
  33 DEMO CODE
  34
  35 When a demo is playing back, all outgoing network messages are skipped, and
  36 incoming messages are read from the demo file.
  37
  38 Whenever cl.time gets past the last received message, another message is
  39 read from the demo file.
  40 ==============================================================================
  41 */
  42
  43 /*
  44 =====================
  45 CL_NextDemo
  46
  47 Called to play the next demo in the demo loop
  48 =====================
  49 */
  50 void CL_NextDemo (void)
  51 {
  52         char    str[MAX_INPUTLINE];
  53
  54         if (cls.demonum == -1)
  55                 return;         // don't play demos
  56
  57         if (!cls.demos[cls.demonum][0] || cls.demonum == MAX_DEMOS)
  58         {
  59                 cls.demonum = 0;
  60                 if (!cls.demos[cls.demonum][0])
  61                 {
  62                         Con_Print("No demos listed with startdemos\n");
  63                         cls.demonum = -1;
  64                         return;
  65                 }
  66         }
  67
  68         dpsnprintf (str, sizeof(str), "playdemo %s\n", cls.demos[cls.demonum]);
  69         Cbuf_InsertText(cmd_local, str);
  70         cls.demonum++;
  71 }
  72
  73 /*
  74 ==============
  75 CL_StopPlayback
  76
  77 Called when a demo file runs out, or the user starts a game
  78 ==============
  79 */
  80 // LadyHavoc: now called only by CL_Disconnect
  81 void CL_StopPlayback (void)
  82 {
  83 #ifdef CONFIG_VIDEO_CAPTURE
  84         if (cl_capturevideo_demo_stop.integer)
  85                 Cvar_Set(&cvars_all, "cl_capturevideo", "0");
  86 #endif
  87
  88         if (!cls.demoplayback)
  89                 return;
  90
  91         FS_Close (cls.demofile);
  92         cls.demoplayback = false;
  93         cls.demofile = NULL;
  94
  95         if (cls.timedemo)
  96                 CL_FinishTimeDemo ();
  97
  98         if (!cls.demostarting) // only quit if not starting another demo
  99                 if (Sys_CheckParm("-demo") || Sys_CheckParm("-capturedemo"))
 100                         host.state = host_shutdown;
 101 }
 102
 103 /*
 104 ====================
 105 CL_WriteDemoMessage
 106
 107 Dumps the current net message, prefixed by the length and view angles
 108 #====================
 109 */
 110 void CL_WriteDemoMessage (sizebuf_t *message)
 111 {
 112         int             len;
 113         int             i;
 114         float   f;
 115
 116         if (cls.demopaused) // LadyHavoc: pausedemo
 117                 return;
 118
 119         len = LittleLong (message->cursize);
 120         FS_Write (cls.demofile, &len, 4);
 121         for (i=0 ; i<3 ; i++)
 122         {
 123                 f = LittleFloat (cl.viewangles[i]);
 124                 FS_Write (cls.demofile, &f, 4);
 125         }
 126         FS_Write (cls.demofile, message->data, message->cursize);
 127 }
 128
 129 /*
 130 ====================
 131 CL_CutDemo
 132
 133 Dumps the current demo to a buffer, and resets the demo to its starting point.
 134 Used to insert csprogs.dat files as a download to the beginning of a demo file.
 135 ====================
 136 */
 137 void CL_CutDemo (unsigned char **buf, fs_offset_t *filesize)
 138 {
 139         *buf = NULL;
 140         *filesize = 0;
 141
 142         FS_Close(cls.demofile);
 143         *buf = FS_LoadFile(cls.demoname, tempmempool, false, filesize);
 144
 145         // restart the demo recording
 146         cls.demofile = FS_OpenRealFile(cls.demoname, "wb", false);
 147         if(!cls.demofile)
 148                 Sys_Error("failed to reopen the demo file");
 149         FS_Printf(cls.demofile, "%i\n", cls.forcetrack);
 150 }
 151
 152 /*
 153 ====================
 154 CL_PasteDemo
 155
 156 Adds the cut stuff back to the demo. Also frees the buffer.
 157 Used to insert csprogs.dat files as a download to the beginning of a demo file.
 158 ====================
 159 */
 160 void CL_PasteDemo (unsigned char **buf, fs_offset_t *filesize)
 161 {
 162         fs_offset_t startoffset = 0;
 163
 164         if(!*buf)
 165                 return;
 166
 167         // skip cdtrack
 168         while(startoffset < *filesize && ((char *)(*buf))[startoffset] != '\n')
 169                 ++startoffset;
 170         if(startoffset < *filesize)
 171                 ++startoffset;
 172
 173         FS_Write(cls.demofile, *buf + startoffset, *filesize - startoffset);
 174
 175         Mem_Free(*buf);
 176         *buf = NULL;
 177         *filesize = 0;
 178 }
 179
 180 /*
 181 ====================
 182 CL_ReadDemoMessage
 183
 184 Handles playback of demos
 185 ====================
 186 */
 187 void CL_ReadDemoMessage(void)
 188 {
 189         int i;
 190         float f;
 191
 192         if (!cls.demoplayback)
 193                 return;
 194
 195         // LadyHavoc: pausedemo
 196         if (cls.demopaused)
 197                 return;
 198
 199         for (;;)
 200         {
 201                 // decide if it is time to grab the next message
 202                 // always grab until fully connected
 203                 if (cls.signon == SIGNONS)
 204                 {
 205                         if (cls.timedemo)
 206                         {
 207                                 cls.td_frames++;
 208                                 cls.td_onesecondframes++;
 209                                 // if this is the first official frame we can now grab the real
 210                                 // td_starttime so the bogus time on the first frame doesn't
 211                                 // count against the final report
 212                                 if (cls.td_frames == 0)
 213                                 {
 214                                         cls.td_starttime = host.realtime;
 215                                         cls.td_onesecondnexttime = cl.time + 1;
 216                                         cls.td_onesecondrealtime = host.realtime;
 217                                         cls.td_onesecondframes = 0;
 218                                         cls.td_onesecondminfps = 0;
 219                                         cls.td_onesecondmaxfps = 0;
 220                                         cls.td_onesecondavgfps = 0;
 221                                         cls.td_onesecondavgcount = 0;
 222                                 }
 223                                 if (cl.time >= cls.td_onesecondnexttime)
 224                                 {
 225                                         double fps = cls.td_onesecondframes / (host.realtime - cls.td_onesecondrealtime);
 226                                         if (cls.td_onesecondavgcount == 0)
 227                                         {
 228                                                 cls.td_onesecondminfps = fps;
 229                                                 cls.td_onesecondmaxfps = fps;
 230                                         }
 231                                         cls.td_onesecondrealtime = host.realtime;
 232                                         cls.td_onesecondminfps = min(cls.td_onesecondminfps, fps);
 233                                         cls.td_onesecondmaxfps = max(cls.td_onesecondmaxfps, fps);
 234                                         cls.td_onesecondavgfps += fps;
 235                                         cls.td_onesecondavgcount++;
 236                                         cls.td_onesecondframes = 0;
 237                                         cls.td_onesecondnexttime++;
 238                                 }
 239                         }
 240                         else if (cl.time < cl.mtime[0])
 241                         {
 242                                 // don't need another message yet
 243                                 return;
 244                         }
 245                 }
 246
 247                 // get the next message
 248                 FS_Read(cls.demofile, &cl_message.cursize, 4);
 249                 cl_message.cursize = LittleLong(cl_message.cursize);
 250                 if(cl_message.cursize & DEMOMSG_CLIENT_TO_SERVER) // This is a client->server message! Ignore for now!
 251                 {
 252                         // skip over demo packet
 253                         FS_Seek(cls.demofile, 12 + (cl_message.cursize & (~DEMOMSG_CLIENT_TO_SERVER)), SEEK_CUR);
 254                         continue;
 255                 }
 256                 if (cl_message.cursize > cl_message.maxsize)
 257                 {
 258                         CL_DisconnectEx(false, "Demo message (%i) > cl_message.maxsize (%i)", cl_message.cursize, cl_message.maxsize);
 259                         cl_message.cursize = 0;
 260                         return;
 261                 }
 262                 VectorCopy(cl.mviewangles[0], cl.mviewangles[1]);
 263                 for (i = 0;i < 3;i++)
 264                 {
 265                         FS_Read(cls.demofile, &f, 4);
 266                         cl.mviewangles[0][i] = LittleFloat(f);
 267                 }
 268
 269                 if (FS_Read(cls.demofile, cl_message.data, cl_message.cursize) == cl_message.cursize)
 270                 {
 271                         MSG_BeginReading(&cl_message);
 272                         CL_ParseServerMessage();
 273
 274                         if (cls.signon != SIGNONS)
 275                                 Cbuf_Execute((cmd_local)->cbuf); // immediately execute svc_stufftext if in the demo before connect!
 276
 277                         // In case the demo contains a "svc_disconnect" message
 278                         if (!cls.demoplayback)
 279                                 return;
 280
 281                         if (cls.timedemo)
 282                                 return;
 283                 }
 284                 else
 285                 {
 286                         CL_Disconnect();
 287                         return;
 288                 }
 289         }
 290 }
 291
 292
 293 /*
 294 ====================
 295 CL_Stop_f
 296
 297 stop recording a demo
 298 ====================
 299 */
 300 void CL_Stop_f(cmd_state_t *cmd)
 301 {
 302         sizebuf_t buf;
 303         unsigned char bufdata[64];
 304
 305         if (!cls.demorecording)
 306         {
 307                 Con_Print("Not recording a demo.\n");
 308                 return;
 309         }
 310
 311 // write a disconnect message to the demo file
 312         // LadyHavoc: don't replace the cl_message when doing this
 313         buf.data = bufdata;
 314         buf.maxsize = sizeof(bufdata);
 315         SZ_Clear(&buf);
 316         MSG_WriteByte(&buf, svc_disconnect);
 317         CL_WriteDemoMessage(&buf);
 318
 319 // finish up
 320         if(cl_autodemo.integer && (cl_autodemo_delete.integer & 1))
 321         {
 322                 FS_RemoveOnClose(cls.demofile);
 323                 Con_Print("Completed and deleted demo\n");
 324         }
 325         else
 326                 Con_Print("Completed demo\n");
 327         FS_Close (cls.demofile);
 328         cls.demofile = NULL;
 329         cls.demorecording = false;
 330 }
 331
 332 /*
 333 ====================
 334 CL_Record_f
 335
 336 record <demoname> <map> [cd track]
 337 ====================
 338 */
 339 void CL_Record_f(cmd_state_t *cmd)
 340 {
 341         int c, track;
 342         char name[MAX_OSPATH];
 343         char vabuf[1024];
 344
 345         c = Cmd_Argc(cmd);
 346         if (c != 2 && c != 3 && c != 4)
 347         {
 348                 Con_Print("record <demoname> [<map> [cd track]]\n");
 349                 return;
 350         }
 351
 352         if (strstr(Cmd_Argv(cmd, 1), ".."))
 353         {
 354                 Con_Print("Relative pathnames are not allowed.\n");
 355                 return;
 356         }
 357
 358         if (c == 2 && cls.state == ca_connected)
 359         {
 360                 Con_Print("Can not record - already connected to server\nClient demo recording must be started before connecting\n");
 361                 return;
 362         }
 363
 364         if (cls.state == ca_connected)
 365                 CL_Disconnect();
 366
 367         // write the forced cd track number, or -1
 368         if (c == 4)
 369         {
 370                 track = atoi(Cmd_Argv(cmd, 3));
 371                 Con_Printf("Forcing CD track to %i\n", cls.forcetrack);
 372         }
 373         else
 374                 track = -1;
 375
 376         // get the demo name
 377         strlcpy (name, Cmd_Argv(cmd, 1), sizeof (name));
 378         FS_DefaultExtension (name, ".dem", sizeof (name));
 379
 380         // start the map up
 381         if (c > 2)
 382                 Cmd_ExecuteString ( cmd, va(vabuf, sizeof(vabuf), "map %s", Cmd_Argv(cmd, 2)), src_local, false);
 383
 384         // open the demo file
 385         Con_Printf("recording to %s.\n", name);
 386         cls.demofile = FS_OpenRealFile(name, "wb", false);
 387         if (!cls.demofile)
 388         {
 389                 Con_Print(CON_ERROR "ERROR: couldn't open.\n");
 390                 return;
 391         }
 392         strlcpy(cls.demoname, name, sizeof(cls.demoname));
 393
 394         cls.forcetrack = track;
 395         FS_Printf(cls.demofile, "%i\n", cls.forcetrack);
 396
 397         cls.demorecording = true;
 398         cls.demo_lastcsprogssize = -1;
 399         cls.demo_lastcsprogscrc = -1;
 400 }
 401
 402 void CL_PlayDemo(const char *demo)
 403 {
 404         char name[MAX_QPATH];
 405         int c;
 406         qbool neg = false;
 407         qfile_t *f;
 408
 409         // open the demo file
 410         strlcpy (name, demo, sizeof (name));
 411         FS_DefaultExtension (name, ".dem", sizeof (name));
 412         f = FS_OpenVirtualFile(name, false);
 413         if (!f)
 414         {
 415                 Con_Printf(CON_ERROR "ERROR: couldn't open %s.\n", name);
 416                 cls.demonum = -1;               // stop demo loop
 417                 return;
 418         }
 419
 420         cls.demostarting = true;
 421
 422         // disconnect from server
 423         CL_Disconnect();
 424
 425         // update networking ports (this is mainly just needed at startup)
 426         NetConn_UpdateSockets();
 427
 428         cls.protocol = PROTOCOL_QUAKE;
 429
 430         Con_Printf("Playing demo %s.\n", name);
 431         cls.demofile = f;
 432         strlcpy(cls.demoname, name, sizeof(cls.demoname));
 433
 434         cls.demoplayback = true;
 435         cls.state = ca_connected;
 436         cls.forcetrack = 0;
 437
 438         while ((c = FS_Getc (cls.demofile)) != '\n')
 439                 if (c == '-')
 440                         neg = true;
 441                 else
 442                         cls.forcetrack = cls.forcetrack * 10 + (c - '0');
 443
 444         if (neg)
 445                 cls.forcetrack = -cls.forcetrack;
 446
 447         cls.demostarting = false;
 448 }
 449
 450 /*
 451 ====================
 452 CL_PlayDemo_f
 453
 454 playdemo [demoname]
 455 ====================
 456 */
 457 void CL_PlayDemo_f(cmd_state_t *cmd)
 458 {
 459         if (Cmd_Argc(cmd) != 2)
 460         {
 461                 Con_Print("playdemo <demoname> : plays a demo\n");
 462                 return;
 463         }
 464
 465         CL_PlayDemo(Cmd_Argv(cmd, 1));
 466 }
 467
 468 typedef struct
 469 {
 470         int frames;
 471         double time, totalfpsavg;
 472         double fpsmin, fpsavg, fpsmax;
 473 }
 474 benchmarkhistory_t;
 475 static size_t doublecmp_offset;
 476 static int doublecmp_withoffset(const void *a_, const void *b_)
 477 {
 478         const double *a = (const double *) ((const char *) a_ + doublecmp_offset);
 479         const double *b = (const double *) ((const char *) b_ + doublecmp_offset);
 480         if(*a > *b)
 481                 return +1;
 482         if(*a < *b)
 483                 return -1;
 484         return 0;
 485 }
 486
 487 /*
 488 ====================
 489 CL_FinishTimeDemo
 490
 491 ====================
 492 */
 493 static void CL_FinishTimeDemo (void)
 494 {
 495         int frames;
 496         int i;
 497         double time, totalfpsavg;
 498         double fpsmin, fpsavg, fpsmax; // report min/avg/max fps
 499         static int benchmark_runs = 0;
 500         char vabuf[1024];
 501
 502         cls.timedemo = host.restless = false;
 503
 504         frames = cls.td_frames;
 505         time = host.realtime - cls.td_starttime;
 506         totalfpsavg = time > 0 ? frames / time : 0;
 507         fpsmin = cls.td_onesecondminfps;
 508         fpsavg = cls.td_onesecondavgcount ? cls.td_onesecondavgfps / cls.td_onesecondavgcount : 0;
 509         fpsmax = cls.td_onesecondmaxfps;
 510         // LadyHavoc: timedemo now prints out 7 digits of fraction, and min/avg/max
 511         Con_Printf("%i frames %5.7f seconds %5.7f fps, one-second fps min/avg/max: %.0f %.0f %.0f (%i seconds)\n", frames, time, totalfpsavg, fpsmin, fpsavg, fpsmax, cls.td_onesecondavgcount);
 512         Log_Printf("benchmark.log", "date %s | enginedate %s | demo %s | commandline %s | run %d | result %i frames %5.7f seconds %5.7f fps, one-second fps min/avg/max: %.0f %.0f %.0f (%i seconds)\n", Sys_TimeString("%Y-%m-%d %H:%M:%S"), buildstring, cls.demoname, cmdline.string, benchmark_runs + 1, frames, time, totalfpsavg, fpsmin, fpsavg, fpsmax, cls.td_onesecondavgcount);
 513         if (Sys_CheckParm("-benchmark"))
 514         {
 515                 ++benchmark_runs;
 516                 i = Sys_CheckParm("-benchmarkruns");
 517                 if(i && i + 1 < sys.argc)
 518                 {
 519                         static benchmarkhistory_t *history = NULL;
 520                         if(!history)
 521                                 history = (benchmarkhistory_t *)Z_Malloc(sizeof(*history) * atoi(sys.argv[i + 1]));
 522
 523                         history[benchmark_runs - 1].frames = frames;
 524                         history[benchmark_runs - 1].time = time;
 525                         history[benchmark_runs - 1].totalfpsavg = totalfpsavg;
 526                         history[benchmark_runs - 1].fpsmin = fpsmin;
 527                         history[benchmark_runs - 1].fpsavg = fpsavg;
 528                         history[benchmark_runs - 1].fpsmax = fpsmax;
 529
 530                         if(atoi(sys.argv[i + 1]) > benchmark_runs)
 531                         {
 532                                 // restart the benchmark
 533                                 Cbuf_AddText(cmd_local, va(vabuf, sizeof(vabuf), "timedemo %s\n", cls.demoname));
 534                                 // cannot execute here
 535                         }
 536                         else
 537                         {
 538                                 // print statistics
 539                                 int first = Sys_CheckParm("-benchmarkruns_skipfirst") ? 1 : 0;
 540                                 if(benchmark_runs > first)
 541                                 {
 542 #define DO_MIN(f) \
 543                                         for(i = first; i < benchmark_runs; ++i) if((i == first) || (history[i].f < f)) f = history[i].f
 544
 545 #define DO_MAX(f) \
 546                                         for(i = first; i < benchmark_runs; ++i) if((i == first) || (history[i].f > f)) f = history[i].f
 547
 548 #define DO_MED(f) \
 549                                         doublecmp_offset = (char *)&history->f - (char *)history; \
 550                                         qsort(history + first, benchmark_runs - first, sizeof(*history), doublecmp_withoffset); \
 551                                         if((first + benchmark_runs) & 1) \
 552                                                 f = history[(first + benchmark_runs - 1) / 2].f; \
 553                                         else \
 554                                                 f = (history[(first + benchmark_runs - 2) / 2].f + history[(first + benchmark_runs) / 2].f) / 2
 555
 556                                         DO_MIN(frames);
 557                                         DO_MAX(time);
 558                                         DO_MIN(totalfpsavg);
 559                                         DO_MIN(fpsmin);
 560                                         DO_MIN(fpsavg);
 561                                         DO_MIN(fpsmax);
 562                                         Con_Printf("MIN: %i frames %5.7f seconds %5.7f fps, one-second fps min/avg/max: %.0f %.0f %.0f (%i seconds)\n", frames, time, totalfpsavg, fpsmin, fpsavg, fpsmax, cls.td_onesecondavgcount);
 563
 564                                         DO_MED(frames);
 565                                         DO_MED(time);
 566                                         DO_MED(totalfpsavg);
 567                                         DO_MED(fpsmin);
 568                                         DO_MED(fpsavg);
 569                                         DO_MED(fpsmax);
 570                                         Con_Printf("MED: %i frames %5.7f seconds %5.7f fps, one-second fps min/avg/max: %.0f %.0f %.0f (%i seconds)\n", frames, time, totalfpsavg, fpsmin, fpsavg, fpsmax, cls.td_onesecondavgcount);
 571
 572                                         DO_MAX(frames);
 573                                         DO_MIN(time);
 574                                         DO_MAX(totalfpsavg);
 575                                         DO_MAX(fpsmin);
 576                                         DO_MAX(fpsavg);
 577                                         DO_MAX(fpsmax);
 578                                         Con_Printf("MAX: %i frames %5.7f seconds %5.7f fps, one-second fps min/avg/max: %.0f %.0f %.0f (%i seconds)\n", frames, time, totalfpsavg, fpsmin, fpsavg, fpsmax, cls.td_onesecondavgcount);
 579                                 }
 580                                 Z_Free(history);
 581                                 history = NULL;
 582                                 host.state = host_shutdown;
 583                         }
 584                 }
 585                 else
 586                         host.state = host_shutdown;
 587         }
 588 }
 589
 590 /*
 591 ====================
 592 CL_TimeDemo_f
 593
 594 timedemo [demoname]
 595 ====================
 596 */
 597 void CL_TimeDemo_f(cmd_state_t *cmd)
 598 {
 599         if (Cmd_Argc(cmd) != 2)
 600         {
 601                 Con_Print("timedemo <demoname> : gets demo speeds\n");
 602                 return;
 603         }
 604
 605         srand(0); // predictable random sequence for benchmarking
 606
 607         CL_PlayDemo(Cmd_Argv(cmd, 1));
 608
 609 // cls.td_starttime will be grabbed at the second frame of the demo, so
 610 // all the loading time doesn't get counted
 611
 612         // instantly hide console and deactivate it
 613         key_dest = key_game;
 614         key_consoleactive = 0;
 615         scr_con_current = 0;
 616
 617         cls.timedemo = host.restless = true;
 618         cls.td_frames = -2;             // skip the first frame
 619         cls.demonum = -1;               // stop demo loop
 620 }
 621
 622 /*
 623 ===============================================================================
 624
 625 DEMO LOOP CONTROL
 626
 627 ===============================================================================
 628 */
 629
 630
 631 /*
 632 ==================
 633 CL_Startdemos_f
 634 ==================
 635 */
 636 static void CL_Startdemos_f(cmd_state_t *cmd)
 637 {
 638         int             i, c;
 639
 640         if (cls.state == ca_dedicated || Sys_CheckParm("-listen") || Sys_CheckParm("-benchmark") || Sys_CheckParm("-demo") || Sys_CheckParm("-capturedemo"))
 641                 return;
 642
 643         c = Cmd_Argc(cmd) - 1;
 644         if (c > MAX_DEMOS)
 645         {
 646                 Con_Printf("Max %i demos in demoloop\n", MAX_DEMOS);
 647                 c = MAX_DEMOS;
 648         }
 649         Con_DPrintf("%i demo(s) in loop\n", c);
 650
 651         for (i=1 ; i<c+1 ; i++)
 652                 strlcpy (cls.demos[i-1], Cmd_Argv(cmd, i), sizeof (cls.demos[i-1]));
 653
 654         // LadyHavoc: clear the remaining slots
 655         for (;i <= MAX_DEMOS;i++)
 656                 cls.demos[i-1][0] = 0;
 657
 658         if (!sv.active && cls.demonum != -1 && !cls.demoplayback)
 659         {
 660                 cls.demonum = 0;
 661                 CL_NextDemo ();
 662         }
 663         else
 664                 cls.demonum = -1;
 665 }
 666
 667
 668 /*
 669 ==================
 670 CL_Demos_f
 671
 672 Return to looping demos
 673 ==================
 674 */
 675 static void CL_Demos_f(cmd_state_t *cmd)
 676 {
 677         if (cls.state == ca_dedicated)
 678                 return;
 679         if (cls.demonum == -1)
 680                 cls.demonum = 1;
 681         CL_Disconnect();
 682         CL_NextDemo();
 683 }
 684
 685 /*
 686 ==================
 687 CL_Stopdemo_f
 688
 689 Return to looping demos
 690 ==================
 691 */
 692 static void CL_Stopdemo_f(cmd_state_t *cmd)
 693 {
 694         if (!cls.demoplayback)
 695                 return;
 696         CL_Disconnect();
 697 }
 698
 699 // LadyHavoc: pausedemo command
 700 static void CL_PauseDemo_f(cmd_state_t *cmd)
 701 {
 702         cls.demopaused = !cls.demopaused;
 703         if (cls.demopaused)
 704                 Con_Print("Demo paused\n");
 705         else
 706                 Con_Print("Demo unpaused\n");
 707 }
 708
 709 void CL_Demo_Init(void)
 710 {
 711         Cmd_AddCommand(CF_CLIENT, "record", CL_Record_f, "record a demo");
 712         Cmd_AddCommand(CF_CLIENT, "stop", CL_Stop_f, "stop recording or playing a demo");
 713         Cmd_AddCommand(CF_CLIENT, "playdemo", CL_PlayDemo_f, "watch a demo file");
 714         Cmd_AddCommand(CF_CLIENT, "timedemo", CL_TimeDemo_f, "play back a demo as fast as possible and save statistics to benchmark.log");
 715         Cmd_AddCommand(CF_CLIENT, "startdemos", CL_Startdemos_f, "start playing back the selected demos sequentially (used at end of startup script)");
 716         Cmd_AddCommand(CF_CLIENT, "demos", CL_Demos_f, "restart looping demos defined by the last startdemos command");
 717         Cmd_AddCommand(CF_CLIENT, "stopdemo", CL_Stopdemo_f, "stop playing or recording demo (like stop command) and return to looping demos");
 718         // LadyHavoc: added pausedemo
 719         Cmd_AddCommand(CF_CLIENT, "pausedemo", CL_PauseDemo_f, "pause demo playback (can also safely pause demo recording if using QUAKE, QUAKEDP or NEHAHRAMOVIE protocol, useful for making movies)");
 720         Cvar_RegisterVariable (&cl_autodemo);
 721         Cvar_RegisterVariable (&cl_autodemo_nameformat);
 722         Cvar_RegisterVariable (&cl_autodemo_delete);
 723 }