extension to writeconfig command: also take a file name
[divverent/darkplaces.git] / host.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 // host.c -- coordinates spawning and killing of local servers
21
22 #include "quakedef.h"
23
24 #include <time.h>
25 #include "libcurl.h"
26 #include "cdaudio.h"
27 #include "cl_gecko.h"
28 #include "cl_video.h"
29 #include "progsvm.h"
30 #include "csprogs.h"
31 #include "sv_demo.h"
32
33 /*
34
35 A server can always be started, even if the system started out as a client
36 to a remote system.
37
38 A client can NOT be started if the system started as a dedicated server.
39
40 Memory is cleared / released when a server or client begins, not when they end.
41
42 */
43
44 // how many frames have occurred
45 // (checked by Host_Error and Host_SaveConfig_f)
46 int host_framecount = 0;
47 // LordHavoc: set when quit is executed
48 qboolean host_shuttingdown = false;
49
50 // the real time since application started, without any slowmo or clamping
51 double realtime;
52
53 // current client
54 client_t *host_client;
55
56 jmp_buf host_abortframe;
57
58 // pretend frames take this amount of time (in seconds), 0 = realtime
59 cvar_t host_framerate = {0, "host_framerate","0", "locks frame timing to this value in seconds, 0.05 is 20fps for example, note that this can easily run too fast, use cl_maxfps if you want to limit your framerate instead, or sys_ticrate to limit server speed"};
60 // shows time used by certain subsystems
61 cvar_t host_speeds = {0, "host_speeds","0", "reports how much time is used in server/graphics/sound"};
62 // LordHavoc: framerate upper cap
63 cvar_t cl_maxfps = {CVAR_SAVE, "cl_maxfps", "1000000", "maximum fps cap, if game is running faster than this it will wait before running another frame (useful to make cpu time available to other programs)"};
64 cvar_t cl_maxidlefps = {CVAR_SAVE, "cl_maxidlefps", "20", "maximum fps cap when the game is not the active window (makes cpu time available to other programs"};
65
66 cvar_t developer = {0, "developer","0", "prints additional debugging messages and information (recommended for modders and level designers)"};
67 cvar_t developer_entityparsing = {0, "developer_entityparsing", "0", "prints detailed network entities information each time a packet is received"};
68
69 cvar_t timestamps = {CVAR_SAVE, "timestamps", "0", "prints timestamps on console messages"};
70 cvar_t timeformat = {CVAR_SAVE, "timeformat", "[%Y-%m-%d %H:%M:%S] ", "time format to use on timestamped console messages"};
71
72 /*
73 ================
74 Host_AbortCurrentFrame
75
76 aborts the current host frame and goes on with the next one
77 ================
78 */
79 void Host_AbortCurrentFrame(void)
80 {
81         longjmp (host_abortframe, 1);
82 }
83
84 /*
85 ================
86 Host_Error
87
88 This shuts down both the client and server
89 ================
90 */
91 void Host_Error (const char *error, ...)
92 {
93         static char hosterrorstring1[MAX_INPUTLINE];
94         static char hosterrorstring2[MAX_INPUTLINE];
95         static qboolean hosterror = false;
96         va_list argptr;
97
98         // turn off rcon redirect if it was active when the crash occurred
99         rcon_redirect = false;
100
101         va_start (argptr,error);
102         dpvsnprintf (hosterrorstring1,sizeof(hosterrorstring1),error,argptr);
103         va_end (argptr);
104
105         Con_Printf("Host_Error: %s\n", hosterrorstring1);
106
107         // LordHavoc: if crashing very early, or currently shutting down, do
108         // Sys_Error instead
109         if (host_framecount < 3 || host_shuttingdown)
110                 Sys_Error ("Host_Error: %s", hosterrorstring1);
111
112         if (hosterror)
113                 Sys_Error ("Host_Error: recursively entered (original error was: %s    new error is: %s)", hosterrorstring2, hosterrorstring1);
114         hosterror = true;
115
116         strlcpy(hosterrorstring2, hosterrorstring1, sizeof(hosterrorstring2));
117
118         CL_Parse_DumpPacket();
119
120         CL_Parse_ErrorCleanUp();
121
122         //PR_Crash();
123
124         // print out where the crash happened, if it was caused by QC (and do a cleanup)
125         PRVM_Crash();
126
127
128         Host_ShutdownServer ();
129
130         if (cls.state == ca_dedicated)
131                 Sys_Error ("Host_Error: %s",hosterrorstring2);  // dedicated servers exit
132
133         CL_Disconnect ();
134         cls.demonum = -1;
135
136         hosterror = false;
137
138         Host_AbortCurrentFrame();
139 }
140
141 void Host_ServerOptions (void)
142 {
143         int i;
144
145         // general default
146         svs.maxclients = 8;
147
148 // COMMANDLINEOPTION: Server: -dedicated [playerlimit] starts a dedicated server (with a command console), default playerlimit is 8
149 // COMMANDLINEOPTION: Server: -listen [playerlimit] starts a multiplayer server with graphical client, like singleplayer but other players can connect, default playerlimit is 8
150         // if no client is in the executable or -dedicated is specified on
151         // commandline, start a dedicated server
152         i = COM_CheckParm ("-dedicated");
153         if (i || !cl_available)
154         {
155                 cls.state = ca_dedicated;
156                 // check for -dedicated specifying how many players
157                 if (i && i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
158                         svs.maxclients = atoi (com_argv[i+1]);
159                 if (COM_CheckParm ("-listen"))
160                         Con_Printf ("Only one of -dedicated or -listen can be specified\n");
161                 // default sv_public on for dedicated servers (often hosted by serious administrators), off for listen servers (often hosted by clueless users)
162                 Cvar_SetValue("sv_public", 1);
163         }
164         else if (cl_available)
165         {
166                 // client exists and not dedicated, check if -listen is specified
167                 cls.state = ca_disconnected;
168                 i = COM_CheckParm ("-listen");
169                 if (i)
170                 {
171                         // default players unless specified
172                         if (i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
173                                 svs.maxclients = atoi (com_argv[i+1]);
174                 }
175                 else
176                 {
177                         // default players in some games, singleplayer in most
178                         if (gamemode != GAME_GOODVSBAD2 && gamemode != GAME_NEXUIZ && gamemode != GAME_BATTLEMECH)
179                                 svs.maxclients = 1;
180                 }
181         }
182
183         svs.maxclients = bound(1, svs.maxclients, MAX_SCOREBOARD);
184
185         svs.clients = (client_t *)Mem_Alloc(sv_mempool, sizeof(client_t) * svs.maxclients);
186
187         if (svs.maxclients > 1 && !deathmatch.integer && !coop.integer)
188                 Cvar_SetValueQuick(&deathmatch, 1);
189 }
190
191 /*
192 =======================
193 Host_InitLocal
194 ======================
195 */
196 void Host_SaveConfig_f(void);
197 void Host_LoadConfig_f(void);
198 static void Host_InitLocal (void)
199 {
200         Cmd_AddCommand("saveconfig", Host_SaveConfig_f, "save settings to config.cfg (or a specified filename) immediately (also automatic when quitting)");
201         Cmd_AddCommand("loadconfig", Host_LoadConfig_f, "reset everything and reload configs");
202
203         Cvar_RegisterVariable (&host_framerate);
204         Cvar_RegisterVariable (&host_speeds);
205         Cvar_RegisterVariable (&cl_maxfps);
206         Cvar_RegisterVariable (&cl_maxidlefps);
207
208         Cvar_RegisterVariable (&developer);
209         Cvar_RegisterVariable (&developer_entityparsing);
210
211         Cvar_RegisterVariable (&timestamps);
212         Cvar_RegisterVariable (&timeformat);
213 }
214
215
216 /*
217 ===============
218 Host_SaveConfig_f
219
220 Writes key bindings and archived cvars to config.cfg
221 ===============
222 */
223 void Host_SaveConfig_f(void)
224 {
225         qfile_t *f;
226         char *file = "config.cfg";
227
228         if(Cmd_Argc() >= 2) {
229                 file = Cmd_Argv(1);
230                 Con_Printf("Saving to %s\n", file);
231         }
232
233 // dedicated servers initialize the host but don't parse and set the
234 // config.cfg cvars
235         // LordHavoc: don't save a config if it crashed in startup
236         if (host_framecount >= 3 && cls.state != ca_dedicated && !COM_CheckParm("-benchmark") && !COM_CheckParm("-capturedemo"))
237         {
238                 f = FS_Open (file, "wb", false, false);
239                 if (!f)
240                 {
241                         Con_Print("Couldn't write config.cfg.\n");
242                         return;
243                 }
244
245                 Key_WriteBindings (f);
246                 Cvar_WriteVariables (f);
247
248                 FS_Close (f);
249         }
250 }
251
252
253 /*
254 ===============
255 Host_LoadConfig_f
256
257 Resets key bindings and cvars to defaults and then reloads scripts
258 ===============
259 */
260 void Host_LoadConfig_f(void)
261 {
262         // unlock the cvar default strings so they can be updated by the new default.cfg
263         Cvar_UnlockDefaults();
264         // reset cvars to their defaults, and then exec startup scripts again
265         Cbuf_InsertText("cvar_resettodefaults_all;exec quake.rc\n");
266 }
267
268 /*
269 =================
270 SV_ClientPrint
271
272 Sends text across to be displayed
273 FIXME: make this just a stuffed echo?
274 =================
275 */
276 void SV_ClientPrint(const char *msg)
277 {
278         if (host_client->netconnection)
279         {
280                 MSG_WriteByte(&host_client->netconnection->message, svc_print);
281                 MSG_WriteString(&host_client->netconnection->message, msg);
282         }
283 }
284
285 /*
286 =================
287 SV_ClientPrintf
288
289 Sends text across to be displayed
290 FIXME: make this just a stuffed echo?
291 =================
292 */
293 void SV_ClientPrintf(const char *fmt, ...)
294 {
295         va_list argptr;
296         char msg[MAX_INPUTLINE];
297
298         va_start(argptr,fmt);
299         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
300         va_end(argptr);
301
302         SV_ClientPrint(msg);
303 }
304
305 /*
306 =================
307 SV_BroadcastPrint
308
309 Sends text to all active clients
310 =================
311 */
312 void SV_BroadcastPrint(const char *msg)
313 {
314         int i;
315         client_t *client;
316
317         for (i = 0, client = svs.clients;i < svs.maxclients;i++, client++)
318         {
319                 if (client->active && client->netconnection)
320                 {
321                         MSG_WriteByte(&client->netconnection->message, svc_print);
322                         MSG_WriteString(&client->netconnection->message, msg);
323                 }
324         }
325
326         if (sv_echobprint.integer && cls.state == ca_dedicated)
327                 Con_Print(msg);
328 }
329
330 /*
331 =================
332 SV_BroadcastPrintf
333
334 Sends text to all active clients
335 =================
336 */
337 void SV_BroadcastPrintf(const char *fmt, ...)
338 {
339         va_list argptr;
340         char msg[MAX_INPUTLINE];
341
342         va_start(argptr,fmt);
343         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
344         va_end(argptr);
345
346         SV_BroadcastPrint(msg);
347 }
348
349 /*
350 =================
351 Host_ClientCommands
352
353 Send text over to the client to be executed
354 =================
355 */
356 void Host_ClientCommands(const char *fmt, ...)
357 {
358         va_list argptr;
359         char string[MAX_INPUTLINE];
360
361         if (!host_client->netconnection)
362                 return;
363
364         va_start(argptr,fmt);
365         dpvsnprintf(string, sizeof(string), fmt, argptr);
366         va_end(argptr);
367
368         MSG_WriteByte(&host_client->netconnection->message, svc_stufftext);
369         MSG_WriteString(&host_client->netconnection->message, string);
370 }
371
372 /*
373 =====================
374 SV_DropClient
375
376 Called when the player is getting totally kicked off the host
377 if (crash = true), don't bother sending signofs
378 =====================
379 */
380 void SV_DropClient(qboolean crash)
381 {
382         int i;
383         Con_Printf("Client \"%s\" dropped\n", host_client->name);
384
385         SV_StopDemoRecording(host_client);
386
387         // make sure edict is not corrupt (from a level change for example)
388         host_client->edict = PRVM_EDICT_NUM(host_client - svs.clients + 1);
389
390         if (host_client->netconnection)
391         {
392                 // free the client (the body stays around)
393                 if (!crash)
394                 {
395                         // LordHavoc: no opportunity for resending, so use unreliable 3 times
396                         unsigned char bufdata[8];
397                         sizebuf_t buf;
398                         memset(&buf, 0, sizeof(buf));
399                         buf.data = bufdata;
400                         buf.maxsize = sizeof(bufdata);
401                         MSG_WriteByte(&buf, svc_disconnect);
402                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
403                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
404                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
405                 }
406                 // break the net connection
407                 NetConn_Close(host_client->netconnection);
408                 host_client->netconnection = NULL;
409         }
410
411         // call qc ClientDisconnect function
412         // LordHavoc: don't call QC if server is dead (avoids recursive
413         // Host_Error in some mods when they run out of edicts)
414         if (host_client->clientconnectcalled && sv.active && host_client->edict)
415         {
416                 // call the prog function for removing a client
417                 // this will set the body to a dead frame, among other things
418                 int saveSelf = prog->globals.server->self;
419                 host_client->clientconnectcalled = false;
420                 prog->globals.server->self = PRVM_EDICT_TO_PROG(host_client->edict);
421                 PRVM_ExecuteProgram(prog->globals.server->ClientDisconnect, "QC function ClientDisconnect is missing");
422                 prog->globals.server->self = saveSelf;
423         }
424
425         // if a download is active, close it
426         if (host_client->download_file)
427         {
428                 Con_DPrintf("Download of %s aborted when %s dropped\n", host_client->download_name, host_client->name);
429                 FS_Close(host_client->download_file);
430                 host_client->download_file = NULL;
431                 host_client->download_name[0] = 0;
432                 host_client->download_expectedposition = 0;
433                 host_client->download_started = false;
434         }
435
436         // remove leaving player from scoreboard
437         host_client->name[0] = 0;
438         host_client->colors = 0;
439         host_client->frags = 0;
440         // send notification to all clients
441         // get number of client manually just to make sure we get it right...
442         i = host_client - svs.clients;
443         MSG_WriteByte (&sv.reliable_datagram, svc_updatename);
444         MSG_WriteByte (&sv.reliable_datagram, i);
445         MSG_WriteString (&sv.reliable_datagram, host_client->name);
446         MSG_WriteByte (&sv.reliable_datagram, svc_updatecolors);
447         MSG_WriteByte (&sv.reliable_datagram, i);
448         MSG_WriteByte (&sv.reliable_datagram, host_client->colors);
449         MSG_WriteByte (&sv.reliable_datagram, svc_updatefrags);
450         MSG_WriteByte (&sv.reliable_datagram, i);
451         MSG_WriteShort (&sv.reliable_datagram, host_client->frags);
452
453         // free the client now
454         if (host_client->entitydatabase)
455                 EntityFrame_FreeDatabase(host_client->entitydatabase);
456         if (host_client->entitydatabase4)
457                 EntityFrame4_FreeDatabase(host_client->entitydatabase4);
458         if (host_client->entitydatabase5)
459                 EntityFrame5_FreeDatabase(host_client->entitydatabase5);
460
461         if (sv.active)
462         {
463                 // clear a fields that matter to DP_SV_CLIENTNAME and DP_SV_CLIENTCOLORS, and also frags
464                 PRVM_ED_ClearEdict(host_client->edict);
465         }
466
467         // clear the client struct (this sets active to false)
468         memset(host_client, 0, sizeof(*host_client));
469
470         // update server listing on the master because player count changed
471         // (which the master uses for filtering empty/full servers)
472         NetConn_Heartbeat(1);
473
474         if (sv.loadgame)
475         {
476                 for (i = 0;i < svs.maxclients;i++)
477                         if (svs.clients[i].active && !svs.clients[i].spawned)
478                                 break;
479                 if (i == svs.maxclients)
480                 {
481                         Con_Printf("Loaded game, everyone rejoined - unpausing\n");
482                         sv.paused = sv.loadgame = false; // we're basically done with loading now
483                 }
484         }
485 }
486
487 /*
488 ==================
489 Host_ShutdownServer
490
491 This only happens at the end of a game, not between levels
492 ==================
493 */
494 void Host_ShutdownServer(void)
495 {
496         int i;
497
498         Con_DPrintf("Host_ShutdownServer\n");
499
500         if (!sv.active)
501                 return;
502
503         NetConn_Heartbeat(2);
504         NetConn_Heartbeat(2);
505
506 // make sure all the clients know we're disconnecting
507         SV_VM_Begin();
508         for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
509                 if (host_client->active)
510                         SV_DropClient(false); // server shutdown
511         SV_VM_End();
512
513         NetConn_CloseServerPorts();
514
515         sv.active = false;
516 //
517 // clear structures
518 //
519         memset(&sv, 0, sizeof(sv));
520         memset(svs.clients, 0, svs.maxclients*sizeof(client_t));
521 }
522
523
524 //============================================================================
525
526 /*
527 ===================
528 Host_GetConsoleCommands
529
530 Add them exactly as if they had been typed at the console
531 ===================
532 */
533 void Host_GetConsoleCommands (void)
534 {
535         char *cmd;
536
537         while (1)
538         {
539                 cmd = Sys_ConsoleInput ();
540                 if (!cmd)
541                         break;
542                 Cbuf_AddText (cmd);
543         }
544 }
545
546 /*
547 ==================
548 Host_TimeReport
549
550 Returns a time report string, for example for
551 ==================
552 */
553 const char *Host_TimingReport()
554 {
555         return va("%.1f%% CPU, %.2f%% lost, offset avg %.1fms, max %.1fms, sdev %.1fms", svs.perf_cpuload * 100, svs.perf_lost * 100, svs.perf_offset_avg * 1000, svs.perf_offset_max * 1000, svs.perf_offset_sdev * 1000);
556 }
557
558 /*
559 ==================
560 Host_Frame
561
562 Runs all active servers
563 ==================
564 */
565 static void Host_Init(void);
566 void Host_Main(void)
567 {
568         double time1 = 0;
569         double time2 = 0;
570         double time3 = 0;
571         double cl_timer, sv_timer;
572         double clframetime, deltarealtime, oldrealtime;
573         double wait;
574         int pass1, pass2, pass3, i;
575
576         Host_Init();
577
578         cl_timer = 0;
579         sv_timer = 0;
580
581         realtime = Sys_DoubleTime();
582         for (;;)
583         {
584                 if (setjmp(host_abortframe))
585                         continue;                       // something bad happened, or the server disconnected
586
587                 oldrealtime = realtime;
588                 realtime = Sys_DoubleTime();
589
590                 deltarealtime = realtime - oldrealtime;
591                 cl_timer += deltarealtime;
592                 sv_timer += deltarealtime;
593
594                 svs.perf_acc_realtime += deltarealtime;
595
596                 // Look for clients who have spawned
597                 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
598                         if(host_client->spawned)
599                                 if(host_client->netconnection)
600                                         break;
601                 if(i == svs.maxclients)
602                 {
603                         // Nobody is looking? Then we won't do timing...
604                         // Instead, reset it to zero
605                         svs.perf_acc_realtime = svs.perf_acc_sleeptime = svs.perf_acc_lost = svs.perf_acc_offset = svs.perf_acc_offset_squared = svs.perf_acc_offset_max = svs.perf_acc_offset_samples = 0;
606                 }
607                 else if(svs.perf_acc_realtime > 5)
608                 {
609                         svs.perf_cpuload = 1 - svs.perf_acc_sleeptime / svs.perf_acc_realtime;
610                         svs.perf_lost = svs.perf_acc_lost / svs.perf_acc_realtime;
611                         if(svs.perf_acc_offset_samples > 0)
612                         {
613                                 svs.perf_offset_max = svs.perf_acc_offset_max;
614                                 svs.perf_offset_avg = svs.perf_acc_offset / svs.perf_acc_offset_samples;
615                                 svs.perf_offset_sdev = sqrt(svs.perf_acc_offset_squared / svs.perf_acc_offset_samples - svs.perf_offset_avg * svs.perf_offset_avg);
616                         }
617                         if(svs.perf_lost > 0)
618                                 Con_DPrintf("Server can't keep up: %s\n", Host_TimingReport());
619                         svs.perf_acc_realtime = svs.perf_acc_sleeptime = svs.perf_acc_lost = svs.perf_acc_offset = svs.perf_acc_offset_squared = svs.perf_acc_offset_max = svs.perf_acc_offset_samples = 0;
620                 }
621
622                 if (slowmo.value < 0.00001 && slowmo.value != 0)
623                         Cvar_SetValue("slowmo", 0);
624                 if (host_framerate.value < 0.00001 && host_framerate.value != 0)
625                         Cvar_SetValue("host_framerate", 0);
626
627                 // keep the random time dependent, but not when playing demos/benchmarking
628                 if(!*sv_random_seed.string && !cls.demoplayback)
629                         rand();
630
631                 cl.islocalgame = NetConn_IsLocalGame();
632
633                 // get new key events
634                 Sys_SendKeyEvents();
635
636                 NetConn_UpdateSockets();
637
638                 Log_DestBuffer_Flush();
639
640                 // receive packets on each main loop iteration, as the main loop may
641                 // be undersleeping due to select() detecting a new packet
642                 if (sv.active)
643                         NetConn_ServerFrame();
644
645                 Curl_Run();
646
647                 // check for commands typed to the host
648                 Host_GetConsoleCommands();
649
650                 // when a server is running we only execute console commands on server frames
651                 // (this mainly allows frikbot .way config files to work properly by staying in sync with the server qc)
652                 // otherwise we execute them on all frames
653                 if (sv_timer > 0 || !sv.active)
654                 {
655                         // process console commands
656                         Cbuf_Execute();
657                 }
658
659                 //Con_Printf("%6.0f %6.0f\n", cl_timer * 1000000.0, sv_timer * 1000000.0);
660
661                 // if the accumulators haven't become positive yet, wait a while
662                 if (cls.state == ca_dedicated)
663                         wait = sv_timer * -1000000.0;
664                 else if (!sv.active)
665                         wait = cl_timer * -1000000.0;
666                 else
667                         wait = max(cl_timer, sv_timer) * -1000000.0;
668                 if (wait > 100000)
669                         wait = 100000;
670
671                 if (!cls.timedemo && wait > 0)
672                 {
673                         double time0 = Sys_DoubleTime();
674                         if (sv_checkforpacketsduringsleep.integer)
675                         {
676                                 if (wait >= 1)
677                                         NetConn_SleepMicroseconds((int)wait);
678                         }
679                         else
680                         {
681                                 if (wait >= 1000)
682                                         Sys_Sleep((int)wait / 1000);
683                         }
684                         svs.perf_acc_sleeptime += Sys_DoubleTime() - time0;
685                         continue;
686                 }
687
688         //-------------------
689         //
690         // server operations
691         //
692         //-------------------
693
694                 // limit the frametime steps to no more than 100ms each
695                 if (cl_timer > 0.1)
696                         cl_timer = 0.1;
697                 if (sv_timer > 0.1)
698                 {
699                         svs.perf_acc_lost += (sv_timer - 0.1);
700                         sv_timer = 0.1;
701                 }
702
703                 if (sv.active && sv_timer > 0)
704                 {
705                         // execute one or more server frames, with an upper limit on how much
706                         // execution time to spend on server frames to avoid freezing the game if
707                         // the server is overloaded, this execution time limit means the game will
708                         // slow down if the server is taking too long.
709                         int framecount, framelimit = 1;
710                         double advancetime, aborttime = 0;
711                         float offset;
712
713                         // run the world state
714                         // don't allow simulation to run too fast or too slow or logic glitches can occur
715
716                         // stop running server frames if the wall time reaches this value
717                         if (sys_ticrate.value <= 0)
718                                 advancetime = sv_timer;
719                         else if (cl.islocalgame && !sv_fixedframeratesingleplayer.integer)
720                         {
721                                 // synchronize to the client frametime, but no less than 10ms and no more than sys_ticrate
722                                 advancetime = bound(0.01, cl_timer, sys_ticrate.value);
723                                 framelimit = 10;
724                                 aborttime = realtime + 0.1;
725                         }
726                         else
727                         {
728                                 advancetime = sys_ticrate.value;
729                                 // listen servers can run multiple server frames per client frame
730                                 if (cls.state == ca_connected)
731                                 {
732                                         framelimit = 10;
733                                         aborttime = realtime + 0.1;
734                                 }
735                         }
736                         advancetime = min(advancetime, 0.1);
737
738                         if(advancetime > 0)
739                         {
740                                 offset = sv_timer + (Sys_DoubleTime() - realtime);
741                                 ++svs.perf_acc_offset_samples;
742                                 svs.perf_acc_offset += offset;
743                                 svs.perf_acc_offset_squared += offset * offset;
744                                 if(svs.perf_acc_offset_max < offset)
745                                         svs.perf_acc_offset_max = offset;
746                         }
747
748                         // only advance time if not paused
749                         // the game also pauses in singleplayer when menu or console is used
750                         sv.frametime = advancetime * slowmo.value;
751                         if (host_framerate.value)
752                                 sv.frametime = host_framerate.value;
753                         if (sv.paused || (cl.islocalgame && (key_dest != key_game || key_consoleactive)))
754                                 sv.frametime = 0;
755
756                         // setup the VM frame
757                         SV_VM_Begin();
758
759                         for (framecount = 0;framecount < framelimit && sv_timer > 0;framecount++)
760                         {
761                                 sv_timer -= advancetime;
762
763                                 // move things around and think unless paused
764                                 if (sv.frametime)
765                                         SV_Physics();
766
767                                 // if this server frame took too long, break out of the loop
768                                 if (framelimit > 1 && Sys_DoubleTime() >= aborttime)
769                                         break;
770                         }
771
772                         // send all messages to the clients
773                         SV_SendClientMessages();
774
775                         // end the server VM frame
776                         SV_VM_End();
777
778                         // send an heartbeat if enough time has passed since the last one
779                         NetConn_Heartbeat(0);
780                 }
781
782         //-------------------
783         //
784         // client operations
785         //
786         //-------------------
787
788                 if (cls.state != ca_dedicated && (cl_timer > 0 || cls.timedemo))
789                 {
790                         // decide the simulation time
791                         if (cls.capturevideo.active)
792                         {
793                                 if (cls.capturevideo.realtime)
794                                         clframetime = cl.realframetime = max(cl_timer, 1.0 / cls.capturevideo.framerate);
795                                 else
796                                 {
797                                         clframetime = 1.0 / cls.capturevideo.framerate;
798                                         cl.realframetime = max(cl_timer, clframetime);
799                                 }
800                         }
801                         else if (vid_activewindow)
802                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / max(5.0f, cl_maxfps.value));
803                         else
804                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / max(5.0f, cl_maxidlefps.value));
805
806                         // apply slowmo scaling
807                         clframetime *= cl.movevars_timescale;
808                         // scale playback speed of demos by slowmo cvar
809                         if (cls.demoplayback)
810                         {
811                                 clframetime *= slowmo.value;
812                                 // if demo playback is paused, don't advance time at all
813                                 if (cls.demopaused)
814                                         clframetime = 0;
815                         }
816
817                         // host_framerate overrides all else
818                         if (host_framerate.value)
819                                 clframetime = host_framerate.value;
820
821                         if (cls.timedemo)
822                                 clframetime = cl.realframetime = cl_timer;
823
824                         // deduct the frame time from the accumulator
825                         cl_timer -= cl.realframetime;
826
827                         cl.oldtime = cl.time;
828                         cl.time += clframetime;
829
830                         // Collect input into cmd
831                         CL_Input();
832
833                         // check for new packets
834                         NetConn_ClientFrame();
835
836                         // read a new frame from a demo if needed
837                         CL_ReadDemoMessage();
838
839                         // now that packets have been read, send input to server
840                         CL_SendMove();
841
842                         // update client world (interpolate entities, create trails, etc)
843                         CL_UpdateWorld();
844
845                         // update video
846                         if (host_speeds.integer)
847                                 time1 = Sys_DoubleTime();
848
849                         //ui_update();
850
851                         CL_Video_Frame();
852 #ifdef SUPPORT_GECKO
853                         CL_Gecko_Frame();
854 #endif
855
856                         CL_UpdateScreen();
857
858                         if (host_speeds.integer)
859                                 time2 = Sys_DoubleTime();
860
861                         // update audio
862                         if(cl.csqc_usecsqclistener)
863                         {
864                                 S_Update(&cl.csqc_listenermatrix);
865                                 cl.csqc_usecsqclistener = false;
866                         }
867                         else
868                                 S_Update(&r_view.matrix);
869
870                         CDAudio_Update();
871
872                         if (host_speeds.integer)
873                         {
874                                 pass1 = (int)((time1 - time3)*1000000);
875                                 time3 = Sys_DoubleTime();
876                                 pass2 = (int)((time2 - time1)*1000000);
877                                 pass3 = (int)((time3 - time2)*1000000);
878                                 Con_Printf("%6ius total %6ius server %6ius gfx %6ius snd\n",
879                                                         pass1+pass2+pass3, pass1, pass2, pass3);
880                         }
881                 }
882
883                 // if there is some time remaining from this frame, reset the timers
884                 if (cl_timer >= 0)
885                         cl_timer = 0;
886                 if (sv_timer >= 0)
887                 {
888                         svs.perf_acc_lost += sv_timer;
889                         sv_timer = 0;
890                 }
891
892                 host_framecount++;
893         }
894 }
895
896 //============================================================================
897
898 qboolean vid_opened = false;
899 void Host_StartVideo(void)
900 {
901         if (!vid_opened && cls.state != ca_dedicated)
902         {
903                 vid_opened = true;
904                 VID_Start();
905                 CDAudio_Startup();
906         }
907 }
908
909 char engineversion[128];
910
911 qboolean sys_nostdout = false;
912
913 extern void Render_Init(void);
914 extern void Mathlib_Init(void);
915 extern void FS_Init(void);
916 extern void FS_Shutdown(void);
917 extern void PR_Cmd_Init(void);
918 extern void COM_Init_Commands(void);
919 extern void FS_Init_Commands(void);
920 extern qboolean host_stuffcmdsrun;
921
922 /*
923 ====================
924 Host_Init
925 ====================
926 */
927 static void Host_Init (void)
928 {
929         int i;
930         const char* os;
931
932         if (COM_CheckParm("-profilegameonly"))
933                 Sys_AllowProfiling(false);
934
935         // LordHavoc: quake never seeded the random number generator before... heh
936         if (COM_CheckParm("-benchmark"))
937                 srand(0); // predictable random sequence for -benchmark
938         else
939                 srand(time(NULL));
940
941         // FIXME: this is evil, but possibly temporary
942 // COMMANDLINEOPTION: Console: -developer enables warnings and other notices (RECOMMENDED for mod developers)
943         if (COM_CheckParm("-developer"))
944         {
945                 developer.value = developer.integer = 100;
946                 developer.string = "100";
947         }
948
949         if (COM_CheckParm("-developer2"))
950         {
951                 developer.value = developer.integer = 100;
952                 developer.string = "100";
953                 developer_memory.value = developer_memory.integer = 100;
954                 developer.string = "100";
955                 developer_memorydebug.value = developer_memorydebug.integer = 100;
956                 developer_memorydebug.string = "100";
957         }
958
959 // COMMANDLINEOPTION: Console: -nostdout disables text output to the terminal the game was launched from
960         if (COM_CheckParm("-nostdout"))
961                 sys_nostdout = 1;
962
963         // used by everything
964         Memory_Init();
965
966         // initialize console command/cvar/alias/command execution systems
967         Cmd_Init();
968
969         // initialize memory subsystem cvars/commands
970         Memory_Init_Commands();
971
972         // initialize console and logging and its cvars/commands
973         Con_Init();
974
975         // initialize various cvars that could not be initialized earlier
976         Curl_Init_Commands();
977         Cmd_Init_Commands();
978         Sys_Init_Commands();
979         COM_Init_Commands();
980         FS_Init_Commands();
981
982         // initialize console window (only used by sys_win.c)
983         Sys_InitConsole();
984
985         // detect gamemode from commandline options or executable name
986         COM_InitGameType();
987
988         // construct a version string for the corner of the console
989 #if defined(__linux__)
990         os = "Linux";
991 #elif defined(WIN32)
992         os = "Windows";
993 #elif defined(__FreeBSD__)
994         os = "FreeBSD";
995 #elif defined(__NetBSD__)
996         os = "NetBSD";
997 #elif defined(__OpenBSD__)
998         os = "OpenBSD";
999 #elif defined(MACOSX)
1000         os = "Mac OS X";
1001 #elif defined(__MORPHOS__)
1002         os = "MorphOS";
1003 #else
1004         os = "Unknown";
1005 #endif
1006         dpsnprintf (engineversion, sizeof (engineversion), "%s %s %s", gamename, os, buildstring);
1007         Con_Printf("%s\n", engineversion);
1008
1009         // initialize ixtable
1010         Mathlib_Init();
1011
1012         // initialize filesystem (including fs_basedir, fs_gamedir, -game, scr_screenshot_name)
1013         FS_Init();
1014
1015         NetConn_Init();
1016         Curl_Init();
1017         //PR_Init();
1018         //PR_Cmd_Init();
1019         PRVM_Init();
1020         Mod_Init();
1021         World_Init();
1022         SV_Init();
1023         Host_InitCommands();
1024         Host_InitLocal();
1025         Host_ServerOptions();
1026
1027         if (cls.state != ca_dedicated)
1028         {
1029                 Con_Printf("Initializing client\n");
1030
1031                 R_Modules_Init();
1032                 Palette_Init();
1033                 MR_Init_Commands();
1034                 VID_Shared_Init();
1035                 VID_Init();
1036                 Render_Init();
1037                 S_Init();
1038                 CDAudio_Init();
1039                 Key_Init();
1040                 V_Init();
1041                 CL_Init();
1042         }
1043
1044         // set up the default startmap_sp and startmap_dm aliases (mods can
1045         // override these) and then execute the quake.rc startup script
1046         if (gamemode == GAME_NEHAHRA)
1047                 Cbuf_AddText("alias startmap_sp \"map nehstart\"\nalias startmap_dm \"map nehstart\"\nexec quake.rc\n");
1048         else if (gamemode == GAME_TRANSFUSION)
1049                 Cbuf_AddText("alias startmap_sp \"map e1m1\"\n""alias startmap_dm \"map bb1\"\nexec quake.rc\n");
1050         else if (gamemode == GAME_TEU)
1051                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec teu.rc\n");
1052         else
1053                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec quake.rc\n");
1054         Cbuf_Execute();
1055
1056         // if stuffcmds wasn't run, then quake.rc is probably missing, use default
1057         if (!host_stuffcmdsrun)
1058         {
1059                 Cbuf_AddText("exec default.cfg\nexec config.cfg\nexec autoexec.cfg\nstuffcmds\n");
1060                 Cbuf_Execute();
1061         }
1062
1063         // put up the loading image so the user doesn't stare at a black screen...
1064         SCR_BeginLoadingPlaque();
1065
1066         // FIXME: put this into some neat design, but the menu should be allowed to crash
1067         // without crashing the whole game, so this should just be a short-time solution
1068
1069         // here comes the not so critical stuff
1070         if (setjmp(host_abortframe)) {
1071                 return;
1072         }
1073
1074         if (cls.state != ca_dedicated)
1075         {
1076                 MR_Init();
1077         }
1078
1079         // check for special benchmark mode
1080 // COMMANDLINEOPTION: Client: -benchmark <demoname> runs a timedemo and quits, results of any timedemo can be found in gamedir/benchmark.log (for example id1/benchmark.log)
1081         i = COM_CheckParm("-benchmark");
1082         if (i && i + 1 < com_argc)
1083         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1084         {
1085                 Cbuf_AddText(va("timedemo %s\n", com_argv[i + 1]));
1086                 Cbuf_Execute();
1087         }
1088
1089         // check for special demo mode
1090 // COMMANDLINEOPTION: Client: -demo <demoname> runs a playdemo and quits
1091         i = COM_CheckParm("-demo");
1092         if (i && i + 1 < com_argc)
1093         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1094         {
1095                 Cbuf_AddText(va("playdemo %s\n", com_argv[i + 1]));
1096                 Cbuf_Execute();
1097         }
1098
1099 // COMMANDLINEOPTION: Client: -capturedemo <demoname> captures a playdemo and quits
1100         i = COM_CheckParm("-capturedemo");
1101         if (i && i + 1 < com_argc)
1102         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1103         {
1104                 Cbuf_AddText(va("playdemo %s\ncl_capturevideo 1\n", com_argv[i + 1]));
1105                 Cbuf_Execute();
1106         }
1107
1108         if (cls.state == ca_dedicated || COM_CheckParm("-listen"))
1109         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1110         {
1111                 Cbuf_AddText("startmap_dm\n");
1112                 Cbuf_Execute();
1113         }
1114
1115         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1116         {
1117                 if (gamemode == GAME_NEXUIZ)
1118                         Cbuf_AddText("togglemenu\nplayvideo logo\ncd loop 1\n");
1119                 else
1120                         Cbuf_AddText("togglemenu\n");
1121                 Cbuf_Execute();
1122         }
1123
1124         Con_DPrint("========Initialized=========\n");
1125
1126         //Host_StartVideo();
1127 }
1128
1129
1130 /*
1131 ===============
1132 Host_Shutdown
1133
1134 FIXME: this is a callback from Sys_Quit and Sys_Error.  It would be better
1135 to run quit through here before the final handoff to the sys code.
1136 ===============
1137 */
1138 void Host_Shutdown(void)
1139 {
1140         static qboolean isdown = false;
1141
1142         if (isdown)
1143         {
1144                 Con_Print("recursive shutdown\n");
1145                 return;
1146         }
1147         if (setjmp(host_abortframe))
1148         {
1149                 Con_Print("aborted the quitting frame?!?\n");
1150                 return;
1151         }
1152         isdown = true;
1153
1154         // be quiet while shutting down
1155         S_StopAllSounds();
1156
1157         // disconnect client from server if active
1158         CL_Disconnect();
1159
1160         // shut down local server if active
1161         Host_ShutdownServer ();
1162
1163         // Shutdown menu
1164         if(MR_Shutdown)
1165                 MR_Shutdown();
1166
1167         // AK shutdown PRVM
1168         // AK hmm, no PRVM_Shutdown(); yet
1169
1170 #ifdef SUPPORT_GECKO
1171         CL_Gecko_Shutdown();
1172 #endif
1173         CL_Video_Shutdown();
1174
1175         Host_SaveConfig_f();
1176
1177         CDAudio_Shutdown ();
1178         S_Terminate ();
1179         Curl_Shutdown ();
1180         NetConn_Shutdown ();
1181         //PR_Shutdown ();
1182
1183         if (cls.state != ca_dedicated)
1184         {
1185                 R_Modules_Shutdown();
1186                 VID_Shutdown();
1187         }
1188
1189         Cmd_Shutdown();
1190         CL_Shutdown();
1191         Sys_Shutdown();
1192         Log_Close();
1193         FS_Shutdown();
1194         Memory_Shutdown();
1195 }
1196