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