register disconnect command even on dedicated server
[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 cvar_t cl_minfps = {CVAR_SAVE, "cl_minfps", "40", "minimum fps target - while the rendering performance is below this, it will drift toward lower quality"};
63 cvar_t cl_minfps_fade = {CVAR_SAVE, "cl_minfps_fade", "0.2", "how fast the quality adapts to varying framerate"};
64 cvar_t cl_minfps_qualitymax = {CVAR_SAVE, "cl_minfps_qualitymax", "1", "highest allowed drawdistance multiplier"};
65 cvar_t cl_minfps_qualitymin = {CVAR_SAVE, "cl_minfps_qualitymin", "0.25", "lowest allowed drawdistance multiplier"};
66 cvar_t cl_minfps_qualitypower = {CVAR_SAVE, "cl_minfps_qualitypower", "4", "raises quality value to a power of itself, higher values make quality drop more sharply in relation to framerate"};
67 cvar_t cl_minfps_qualityscale = {CVAR_SAVE, "cl_minfps_qualityscale", "0.5", "multiplier for quality"};
68 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)"};
69 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"};
70
71 cvar_t developer = {0, "developer","0", "prints additional debugging messages and information (recommended for modders and level designers)"};
72 cvar_t developer_loadfile = {0, "developer_loadfile","0", "prints name and size of every file loaded via the FS_LoadFile function (which is almost everything)"};
73 cvar_t developer_loading = {0, "developer_loading","0", "prints information about files as they are loaded or unloaded successfully"};
74 cvar_t developer_entityparsing = {0, "developer_entityparsing", "0", "prints detailed network entities information each time a packet is received"};
75
76 cvar_t timestamps = {CVAR_SAVE, "timestamps", "0", "prints timestamps on console messages"};
77 cvar_t timeformat = {CVAR_SAVE, "timeformat", "[%Y-%m-%d %H:%M:%S] ", "time format to use on timestamped console messages"};
78
79 /*
80 ================
81 Host_AbortCurrentFrame
82
83 aborts the current host frame and goes on with the next one
84 ================
85 */
86 void Host_AbortCurrentFrame(void)
87 {
88         longjmp (host_abortframe, 1);
89 }
90
91 /*
92 ================
93 Host_Error
94
95 This shuts down both the client and server
96 ================
97 */
98 void Host_Error (const char *error, ...)
99 {
100         static char hosterrorstring1[MAX_INPUTLINE];
101         static char hosterrorstring2[MAX_INPUTLINE];
102         static qboolean hosterror = false;
103         va_list argptr;
104
105         // turn off rcon redirect if it was active when the crash occurred
106         rcon_redirect = false;
107
108         va_start (argptr,error);
109         dpvsnprintf (hosterrorstring1,sizeof(hosterrorstring1),error,argptr);
110         va_end (argptr);
111
112         Con_Printf("Host_Error: %s\n", hosterrorstring1);
113
114         // LordHavoc: if crashing very early, or currently shutting down, do
115         // Sys_Error instead
116         if (host_framecount < 3 || host_shuttingdown)
117                 Sys_Error ("Host_Error: %s", hosterrorstring1);
118
119         if (hosterror)
120                 Sys_Error ("Host_Error: recursively entered (original error was: %s    new error is: %s)", hosterrorstring2, hosterrorstring1);
121         hosterror = true;
122
123         strlcpy(hosterrorstring2, hosterrorstring1, sizeof(hosterrorstring2));
124
125         CL_Parse_DumpPacket();
126
127         CL_Parse_ErrorCleanUp();
128
129         //PR_Crash();
130
131         // print out where the crash happened, if it was caused by QC (and do a cleanup)
132         PRVM_Crash();
133
134
135         Host_ShutdownServer ();
136
137         if (cls.state == ca_dedicated)
138                 Sys_Error ("Host_Error: %s",hosterrorstring2);  // dedicated servers exit
139
140         CL_Disconnect ();
141         cls.demonum = -1;
142
143         hosterror = false;
144
145         Host_AbortCurrentFrame();
146 }
147
148 void Host_ServerOptions (void)
149 {
150         int i;
151
152         // general default
153         svs.maxclients = 8;
154
155 // COMMANDLINEOPTION: Server: -dedicated [playerlimit] starts a dedicated server (with a command console), default playerlimit is 8
156 // COMMANDLINEOPTION: Server: -listen [playerlimit] starts a multiplayer server with graphical client, like singleplayer but other players can connect, default playerlimit is 8
157         // if no client is in the executable or -dedicated is specified on
158         // commandline, start a dedicated server
159         i = COM_CheckParm ("-dedicated");
160         if (i || !cl_available)
161         {
162                 cls.state = ca_dedicated;
163                 // check for -dedicated specifying how many players
164                 if (i && i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
165                         svs.maxclients = atoi (com_argv[i+1]);
166                 if (COM_CheckParm ("-listen"))
167                         Con_Printf ("Only one of -dedicated or -listen can be specified\n");
168                 // default sv_public on for dedicated servers (often hosted by serious administrators), off for listen servers (often hosted by clueless users)
169                 Cvar_SetValue("sv_public", 1);
170         }
171         else if (cl_available)
172         {
173                 // client exists and not dedicated, check if -listen is specified
174                 cls.state = ca_disconnected;
175                 i = COM_CheckParm ("-listen");
176                 if (i)
177                 {
178                         // default players unless specified
179                         if (i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
180                                 svs.maxclients = atoi (com_argv[i+1]);
181                 }
182                 else
183                 {
184                         // default players in some games, singleplayer in most
185                         if (gamemode != GAME_GOODVSBAD2 && gamemode != GAME_NEXUIZ && gamemode != GAME_BATTLEMECH)
186                                 svs.maxclients = 1;
187                 }
188         }
189
190         svs.maxclients = bound(1, svs.maxclients, MAX_SCOREBOARD);
191
192         svs.clients = (client_t *)Mem_Alloc(sv_mempool, sizeof(client_t) * svs.maxclients);
193
194         if (svs.maxclients > 1 && !deathmatch.integer && !coop.integer)
195                 Cvar_SetValueQuick(&deathmatch, 1);
196 }
197
198 /*
199 =======================
200 Host_InitLocal
201 ======================
202 */
203 void Host_SaveConfig_f(void);
204 void Host_LoadConfig_f(void);
205 static void Host_InitLocal (void)
206 {
207         Cmd_AddCommand("saveconfig", Host_SaveConfig_f, "save settings to config.cfg (or a specified filename) immediately (also automatic when quitting)");
208         Cmd_AddCommand("loadconfig", Host_LoadConfig_f, "reset everything and reload configs");
209
210         Cvar_RegisterVariable (&host_framerate);
211         Cvar_RegisterVariable (&host_speeds);
212         Cvar_RegisterVariable (&cl_minfps);
213         Cvar_RegisterVariable (&cl_minfps_fade);
214         Cvar_RegisterVariable (&cl_minfps_qualitymax);
215         Cvar_RegisterVariable (&cl_minfps_qualitymin);
216         Cvar_RegisterVariable (&cl_minfps_qualitypower);
217         Cvar_RegisterVariable (&cl_minfps_qualityscale);
218         Cvar_RegisterVariable (&cl_maxfps);
219         Cvar_RegisterVariable (&cl_maxidlefps);
220
221         Cvar_RegisterVariable (&developer);
222         Cvar_RegisterVariable (&developer_loadfile);
223         Cvar_RegisterVariable (&developer_loading);
224         Cvar_RegisterVariable (&developer_entityparsing);
225
226         Cvar_RegisterVariable (&timestamps);
227         Cvar_RegisterVariable (&timeformat);
228 }
229
230
231 /*
232 ===============
233 Host_SaveConfig_f
234
235 Writes key bindings and archived cvars to config.cfg
236 ===============
237 */
238 void Host_SaveConfig_to(const char *file)
239 {
240         qfile_t *f;
241
242 // dedicated servers initialize the host but don't parse and set the
243 // config.cfg cvars
244         // LordHavoc: don't save a config if it crashed in startup
245         if (host_framecount >= 3 && cls.state != ca_dedicated && !COM_CheckParm("-benchmark") && !COM_CheckParm("-capturedemo"))
246         {
247                 f = FS_Open (file, "wb", false, false);
248                 if (!f)
249                 {
250                         Con_Printf("Couldn't write %s.\n", file);
251                         return;
252                 }
253
254                 Key_WriteBindings (f);
255                 Cvar_WriteVariables (f);
256
257                 FS_Close (f);
258         }
259 }
260 void Host_SaveConfig(void)
261 {
262         Host_SaveConfig_to("config.cfg");
263 }
264 void Host_SaveConfig_f(void)
265 {
266         const char *file = "config.cfg";
267
268         if(Cmd_Argc() >= 2) {
269                 file = Cmd_Argv(1);
270                 Con_Printf("Saving to %s\n", file);
271         }
272
273         Host_SaveConfig_to(file);
274 }
275
276 /*
277 ===============
278 Host_LoadConfig_f
279
280 Resets key bindings and cvars to defaults and then reloads scripts
281 ===============
282 */
283 void Host_LoadConfig_f(void)
284 {
285         // unlock the cvar default strings so they can be updated by the new default.cfg
286         Cvar_UnlockDefaults();
287         // reset cvars to their defaults, and then exec startup scripts again
288         Cbuf_InsertText("cvar_resettodefaults_all;exec quake.rc\n");
289 }
290
291 /*
292 =================
293 SV_ClientPrint
294
295 Sends text across to be displayed
296 FIXME: make this just a stuffed echo?
297 =================
298 */
299 void SV_ClientPrint(const char *msg)
300 {
301         if (host_client->netconnection)
302         {
303                 MSG_WriteByte(&host_client->netconnection->message, svc_print);
304                 MSG_WriteString(&host_client->netconnection->message, msg);
305         }
306 }
307
308 /*
309 =================
310 SV_ClientPrintf
311
312 Sends text across to be displayed
313 FIXME: make this just a stuffed echo?
314 =================
315 */
316 void SV_ClientPrintf(const char *fmt, ...)
317 {
318         va_list argptr;
319         char msg[MAX_INPUTLINE];
320
321         va_start(argptr,fmt);
322         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
323         va_end(argptr);
324
325         SV_ClientPrint(msg);
326 }
327
328 /*
329 =================
330 SV_BroadcastPrint
331
332 Sends text to all active clients
333 =================
334 */
335 void SV_BroadcastPrint(const char *msg)
336 {
337         int i;
338         client_t *client;
339
340         for (i = 0, client = svs.clients;i < svs.maxclients;i++, client++)
341         {
342                 if (client->active && client->netconnection)
343                 {
344                         MSG_WriteByte(&client->netconnection->message, svc_print);
345                         MSG_WriteString(&client->netconnection->message, msg);
346                 }
347         }
348
349         if (sv_echobprint.integer && cls.state == ca_dedicated)
350                 Con_Print(msg);
351 }
352
353 /*
354 =================
355 SV_BroadcastPrintf
356
357 Sends text to all active clients
358 =================
359 */
360 void SV_BroadcastPrintf(const char *fmt, ...)
361 {
362         va_list argptr;
363         char msg[MAX_INPUTLINE];
364
365         va_start(argptr,fmt);
366         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
367         va_end(argptr);
368
369         SV_BroadcastPrint(msg);
370 }
371
372 /*
373 =================
374 Host_ClientCommands
375
376 Send text over to the client to be executed
377 =================
378 */
379 void Host_ClientCommands(const char *fmt, ...)
380 {
381         va_list argptr;
382         char string[MAX_INPUTLINE];
383
384         if (!host_client->netconnection)
385                 return;
386
387         va_start(argptr,fmt);
388         dpvsnprintf(string, sizeof(string), fmt, argptr);
389         va_end(argptr);
390
391         MSG_WriteByte(&host_client->netconnection->message, svc_stufftext);
392         MSG_WriteString(&host_client->netconnection->message, string);
393 }
394
395 /*
396 =====================
397 SV_DropClient
398
399 Called when the player is getting totally kicked off the host
400 if (crash = true), don't bother sending signofs
401 =====================
402 */
403 void SV_DropClient(qboolean crash)
404 {
405         int i;
406         Con_Printf("Client \"%s\" dropped\n", host_client->name);
407
408         SV_StopDemoRecording(host_client);
409
410         // make sure edict is not corrupt (from a level change for example)
411         host_client->edict = PRVM_EDICT_NUM(host_client - svs.clients + 1);
412
413         if (host_client->netconnection)
414         {
415                 // free the client (the body stays around)
416                 if (!crash)
417                 {
418                         // LordHavoc: no opportunity for resending, so use unreliable 3 times
419                         unsigned char bufdata[8];
420                         sizebuf_t buf;
421                         memset(&buf, 0, sizeof(buf));
422                         buf.data = bufdata;
423                         buf.maxsize = sizeof(bufdata);
424                         MSG_WriteByte(&buf, svc_disconnect);
425                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
426                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
427                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
428                 }
429                 // break the net connection
430                 NetConn_Close(host_client->netconnection);
431                 host_client->netconnection = NULL;
432         }
433
434         // call qc ClientDisconnect function
435         // LordHavoc: don't call QC if server is dead (avoids recursive
436         // Host_Error in some mods when they run out of edicts)
437         if (host_client->clientconnectcalled && sv.active && host_client->edict)
438         {
439                 // call the prog function for removing a client
440                 // this will set the body to a dead frame, among other things
441                 int saveSelf = prog->globals.server->self;
442                 host_client->clientconnectcalled = false;
443                 prog->globals.server->self = PRVM_EDICT_TO_PROG(host_client->edict);
444                 PRVM_ExecuteProgram(prog->globals.server->ClientDisconnect, "QC function ClientDisconnect is missing");
445                 prog->globals.server->self = saveSelf;
446         }
447
448         // if a download is active, close it
449         if (host_client->download_file)
450         {
451                 Con_DPrintf("Download of %s aborted when %s dropped\n", host_client->download_name, host_client->name);
452                 FS_Close(host_client->download_file);
453                 host_client->download_file = NULL;
454                 host_client->download_name[0] = 0;
455                 host_client->download_expectedposition = 0;
456                 host_client->download_started = false;
457         }
458
459         // remove leaving player from scoreboard
460         host_client->name[0] = 0;
461         host_client->colors = 0;
462         host_client->frags = 0;
463         // send notification to all clients
464         // get number of client manually just to make sure we get it right...
465         i = host_client - svs.clients;
466         MSG_WriteByte (&sv.reliable_datagram, svc_updatename);
467         MSG_WriteByte (&sv.reliable_datagram, i);
468         MSG_WriteString (&sv.reliable_datagram, host_client->name);
469         MSG_WriteByte (&sv.reliable_datagram, svc_updatecolors);
470         MSG_WriteByte (&sv.reliable_datagram, i);
471         MSG_WriteByte (&sv.reliable_datagram, host_client->colors);
472         MSG_WriteByte (&sv.reliable_datagram, svc_updatefrags);
473         MSG_WriteByte (&sv.reliable_datagram, i);
474         MSG_WriteShort (&sv.reliable_datagram, host_client->frags);
475
476         // free the client now
477         if (host_client->entitydatabase)
478                 EntityFrame_FreeDatabase(host_client->entitydatabase);
479         if (host_client->entitydatabase4)
480                 EntityFrame4_FreeDatabase(host_client->entitydatabase4);
481         if (host_client->entitydatabase5)
482                 EntityFrame5_FreeDatabase(host_client->entitydatabase5);
483
484         if (sv.active)
485         {
486                 // clear a fields that matter to DP_SV_CLIENTNAME and DP_SV_CLIENTCOLORS, and also frags
487                 PRVM_ED_ClearEdict(host_client->edict);
488         }
489
490         // clear the client struct (this sets active to false)
491         memset(host_client, 0, sizeof(*host_client));
492
493         // update server listing on the master because player count changed
494         // (which the master uses for filtering empty/full servers)
495         NetConn_Heartbeat(1);
496
497         if (sv.loadgame)
498         {
499                 for (i = 0;i < svs.maxclients;i++)
500                         if (svs.clients[i].active && !svs.clients[i].spawned)
501                                 break;
502                 if (i == svs.maxclients)
503                 {
504                         Con_Printf("Loaded game, everyone rejoined - unpausing\n");
505                         sv.paused = sv.loadgame = false; // we're basically done with loading now
506                 }
507         }
508 }
509
510 /*
511 ==================
512 Host_ShutdownServer
513
514 This only happens at the end of a game, not between levels
515 ==================
516 */
517 void Host_ShutdownServer(void)
518 {
519         int i;
520
521         Con_DPrintf("Host_ShutdownServer\n");
522
523         if (!sv.active)
524                 return;
525
526         NetConn_Heartbeat(2);
527         NetConn_Heartbeat(2);
528
529 // make sure all the clients know we're disconnecting
530         SV_VM_Begin();
531         if(prog->loaded)
532                 if(prog->funcoffsets.SV_Shutdown)
533                 {
534                         func_t s = prog->funcoffsets.SV_Shutdown;
535                         prog->funcoffsets.SV_Shutdown = 0; // prevent it from getting called again
536                         PRVM_ExecuteProgram(s,"SV_Shutdown() required");
537                 }
538         for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
539                 if (host_client->active)
540                         SV_DropClient(false); // server shutdown
541         SV_VM_End();
542
543         NetConn_CloseServerPorts();
544
545         sv.active = false;
546 //
547 // clear structures
548 //
549         memset(&sv, 0, sizeof(sv));
550         memset(svs.clients, 0, svs.maxclients*sizeof(client_t));
551 }
552
553
554 //============================================================================
555
556 /*
557 ===================
558 Host_GetConsoleCommands
559
560 Add them exactly as if they had been typed at the console
561 ===================
562 */
563 void Host_GetConsoleCommands (void)
564 {
565         char *cmd;
566
567         while (1)
568         {
569                 cmd = Sys_ConsoleInput ();
570                 if (!cmd)
571                         break;
572                 Cbuf_AddText (cmd);
573         }
574 }
575
576 /*
577 ==================
578 Host_TimeReport
579
580 Returns a time report string, for example for
581 ==================
582 */
583 const char *Host_TimingReport()
584 {
585         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);
586 }
587
588 /*
589 ==================
590 Host_Frame
591
592 Runs all active servers
593 ==================
594 */
595 static void Host_Init(void);
596 void Host_Main(void)
597 {
598         double time1 = 0;
599         double time2 = 0;
600         double time3 = 0;
601         double cl_timer, sv_timer;
602         double clframetime, deltarealtime, oldrealtime;
603         double wait;
604         int pass1, pass2, pass3, i;
605
606         Host_Init();
607
608         cl_timer = 0;
609         sv_timer = 0;
610
611         realtime = Sys_DoubleTime();
612         for (;;)
613         {
614                 if (setjmp(host_abortframe))
615                         continue;                       // something bad happened, or the server disconnected
616
617                 oldrealtime = realtime;
618                 realtime = Sys_DoubleTime();
619
620                 deltarealtime = realtime - oldrealtime;
621                 cl_timer += deltarealtime;
622                 sv_timer += deltarealtime;
623
624                 svs.perf_acc_realtime += deltarealtime;
625
626                 // Look for clients who have spawned
627                 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
628                         if(host_client->spawned)
629                                 if(host_client->netconnection)
630                                         break;
631                 if(i == svs.maxclients)
632                 {
633                         // Nobody is looking? Then we won't do timing...
634                         // Instead, reset it to zero
635                         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;
636                 }
637                 else if(svs.perf_acc_realtime > 5)
638                 {
639                         svs.perf_cpuload = 1 - svs.perf_acc_sleeptime / svs.perf_acc_realtime;
640                         svs.perf_lost = svs.perf_acc_lost / svs.perf_acc_realtime;
641                         if(svs.perf_acc_offset_samples > 0)
642                         {
643                                 svs.perf_offset_max = svs.perf_acc_offset_max;
644                                 svs.perf_offset_avg = svs.perf_acc_offset / svs.perf_acc_offset_samples;
645                                 svs.perf_offset_sdev = sqrt(svs.perf_acc_offset_squared / svs.perf_acc_offset_samples - svs.perf_offset_avg * svs.perf_offset_avg);
646                         }
647                         if(svs.perf_lost > 0)
648                                 Con_DPrintf("Server can't keep up: %s\n", Host_TimingReport());
649                         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;
650                 }
651
652                 if (slowmo.value < 0.00001 && slowmo.value != 0)
653                         Cvar_SetValue("slowmo", 0);
654                 if (host_framerate.value < 0.00001 && host_framerate.value != 0)
655                         Cvar_SetValue("host_framerate", 0);
656
657                 // keep the random time dependent, but not when playing demos/benchmarking
658                 if(!*sv_random_seed.string && !cls.demoplayback)
659                         rand();
660
661                 cl.islocalgame = NetConn_IsLocalGame();
662
663                 // begin gathering mouse input
664                 in_mouse_x = in_mouse_y = 0;
665
666                 // get new key events
667                 Sys_SendKeyEvents();
668
669                 NetConn_UpdateSockets();
670
671                 Log_DestBuffer_Flush();
672
673                 // receive packets on each main loop iteration, as the main loop may
674                 // be undersleeping due to select() detecting a new packet
675                 if (sv.active)
676                         NetConn_ServerFrame();
677
678                 Curl_Run();
679
680                 // check for commands typed to the host
681                 Host_GetConsoleCommands();
682
683                 // when a server is running we only execute console commands on server frames
684                 // (this mainly allows frikbot .way config files to work properly by staying in sync with the server qc)
685                 // otherwise we execute them on client frames
686                 if (sv.active ? sv_timer > 0 : cl_timer > 0)
687                 {
688                         // process console commands
689                         Cbuf_Execute();
690                 }
691
692                 //Con_Printf("%6.0f %6.0f\n", cl_timer * 1000000.0, sv_timer * 1000000.0);
693
694                 // if the accumulators haven't become positive yet, wait a while
695                 if (cls.state == ca_dedicated)
696                         wait = sv_timer * -1000000.0;
697                 else if (!sv.active)
698                         wait = cl_timer * -1000000.0;
699                 else
700                         wait = max(cl_timer, sv_timer) * -1000000.0;
701                 wait = bound(0, wait, 100000);
702
703                 if (!cls.timedemo && wait >= 1)
704                 {
705                         double time0 = Sys_DoubleTime();
706                         if (sv_checkforpacketsduringsleep.integer)
707                                 NetConn_SleepMicroseconds((int)wait);
708                         else
709                                 Sys_Sleep((int)wait);
710                         svs.perf_acc_sleeptime += Sys_DoubleTime() - time0;
711                         continue;
712                 }
713
714         //-------------------
715         //
716         // server operations
717         //
718         //-------------------
719
720                 // limit the frametime steps to no more than 100ms each
721                 if (cl_timer > 0.1)
722                         cl_timer = 0.1;
723                 if (sv_timer > 0.1)
724                 {
725                         svs.perf_acc_lost += (sv_timer - 0.1);
726                         sv_timer = 0.1;
727                 }
728
729                 if (sv.active && sv_timer > 0)
730                 {
731                         // execute one or more server frames, with an upper limit on how much
732                         // execution time to spend on server frames to avoid freezing the game if
733                         // the server is overloaded, this execution time limit means the game will
734                         // slow down if the server is taking too long.
735                         int framecount, framelimit = 1;
736                         double advancetime, aborttime = 0;
737                         float offset;
738
739                         // run the world state
740                         // don't allow simulation to run too fast or too slow or logic glitches can occur
741
742                         // stop running server frames if the wall time reaches this value
743                         if (sys_ticrate.value <= 0)
744                                 advancetime = sv_timer;
745                         else if (cl.islocalgame && !sv_fixedframeratesingleplayer.integer)
746                         {
747                                 // synchronize to the client frametime, but no less than 10ms and no more than sys_ticrate
748                                 advancetime = bound(0.01, cl_timer, sys_ticrate.value);
749                                 framelimit = 10;
750                                 aborttime = realtime + 0.1;
751                         }
752                         else
753                         {
754                                 advancetime = sys_ticrate.value;
755                                 // listen servers can run multiple server frames per client frame
756                                 if (cls.state == ca_connected)
757                                 {
758                                         framelimit = 10;
759                                         aborttime = realtime + 0.1;
760                                 }
761                         }
762                         advancetime = min(advancetime, 0.1);
763
764                         if(advancetime > 0)
765                         {
766                                 offset = sv_timer + (Sys_DoubleTime() - realtime);
767                                 ++svs.perf_acc_offset_samples;
768                                 svs.perf_acc_offset += offset;
769                                 svs.perf_acc_offset_squared += offset * offset;
770                                 if(svs.perf_acc_offset_max < offset)
771                                         svs.perf_acc_offset_max = offset;
772                         }
773
774                         // only advance time if not paused
775                         // the game also pauses in singleplayer when menu or console is used
776                         sv.frametime = advancetime * slowmo.value;
777                         if (host_framerate.value)
778                                 sv.frametime = host_framerate.value;
779                         if (sv.paused || (cl.islocalgame && (key_dest != key_game || key_consoleactive)))
780                                 sv.frametime = 0;
781
782                         // setup the VM frame
783                         SV_VM_Begin();
784
785                         for (framecount = 0;framecount < framelimit && sv_timer > 0;framecount++)
786                         {
787                                 sv_timer -= advancetime;
788
789                                 // move things around and think unless paused
790                                 if (sv.frametime)
791                                         SV_Physics();
792
793                                 // if this server frame took too long, break out of the loop
794                                 if (framelimit > 1 && Sys_DoubleTime() >= aborttime)
795                                         break;
796                         }
797
798                         // send all messages to the clients
799                         SV_SendClientMessages();
800
801                         // end the server VM frame
802                         SV_VM_End();
803
804                         // send an heartbeat if enough time has passed since the last one
805                         NetConn_Heartbeat(0);
806                 }
807
808         //-------------------
809         //
810         // client operations
811         //
812         //-------------------
813
814                 if (cls.state != ca_dedicated && (cl_timer > 0 || cls.timedemo))
815                 {
816                         // decide the simulation time
817                         if (cls.capturevideo.active)
818                         {
819                                 if (cls.capturevideo.realtime)
820                                         clframetime = cl.realframetime = max(cl_timer, 1.0 / cls.capturevideo.framerate);
821                                 else
822                                 {
823                                         clframetime = 1.0 / cls.capturevideo.framerate;
824                                         cl.realframetime = max(cl_timer, clframetime);
825                                 }
826                         }
827                         else if (vid_activewindow)
828                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / max(5.0f, cl_maxfps.value));
829                         else
830                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / max(5.0f, cl_maxidlefps.value));
831
832                         // apply slowmo scaling
833                         clframetime *= cl.movevars_timescale;
834                         // scale playback speed of demos by slowmo cvar
835                         if (cls.demoplayback)
836                         {
837                                 clframetime *= slowmo.value;
838                                 // if demo playback is paused, don't advance time at all
839                                 if (cls.demopaused)
840                                         clframetime = 0;
841                         }
842
843                         // host_framerate overrides all else
844                         if (host_framerate.value)
845                                 clframetime = host_framerate.value;
846
847                         if (cls.timedemo)
848                                 clframetime = cl.realframetime = cl_timer;
849
850                         // deduct the frame time from the accumulator
851                         cl_timer -= cl.realframetime;
852
853                         cl.oldtime = cl.time;
854                         cl.time += clframetime;
855
856                         // Collect input into cmd
857                         CL_Input();
858
859                         // check for new packets
860                         NetConn_ClientFrame();
861
862                         // read a new frame from a demo if needed
863                         CL_ReadDemoMessage();
864
865                         // now that packets have been read, send input to server
866                         CL_SendMove();
867
868                         // update client world (interpolate entities, create trails, etc)
869                         CL_UpdateWorld();
870
871                         // update video
872                         if (host_speeds.integer)
873                                 time1 = Sys_DoubleTime();
874
875                         CL_Video_Frame();
876                         CL_Gecko_Frame();
877
878                         CL_UpdateScreen();
879
880                         if (host_speeds.integer)
881                                 time2 = Sys_DoubleTime();
882
883                         // update audio
884                         if(cl.csqc_usecsqclistener)
885                         {
886                                 S_Update(&cl.csqc_listenermatrix);
887                                 cl.csqc_usecsqclistener = false;
888                         }
889                         else
890                                 S_Update(&r_refdef.view.matrix);
891
892                         CDAudio_Update();
893
894                         if (host_speeds.integer)
895                         {
896                                 pass1 = (int)((time1 - time3)*1000000);
897                                 time3 = Sys_DoubleTime();
898                                 pass2 = (int)((time2 - time1)*1000000);
899                                 pass3 = (int)((time3 - time2)*1000000);
900                                 Con_Printf("%6ius total %6ius server %6ius gfx %6ius snd\n",
901                                                         pass1+pass2+pass3, pass1, pass2, pass3);
902                         }
903                 }
904
905                 // if there is some time remaining from this frame, reset the timers
906                 if (cl_timer >= 0)
907                         cl_timer = 0;
908                 if (sv_timer >= 0)
909                 {
910                         svs.perf_acc_lost += sv_timer;
911                         sv_timer = 0;
912                 }
913
914                 host_framecount++;
915         }
916 }
917
918 //============================================================================
919
920 qboolean vid_opened = false;
921 void Host_StartVideo(void)
922 {
923         if (!vid_opened && cls.state != ca_dedicated)
924         {
925                 vid_opened = true;
926                 VID_Start();
927                 CDAudio_Startup();
928         }
929 }
930
931 char engineversion[128];
932
933 qboolean sys_nostdout = false;
934
935 extern void Render_Init(void);
936 extern void Mathlib_Init(void);
937 extern void FS_Init(void);
938 extern void FS_Shutdown(void);
939 extern void PR_Cmd_Init(void);
940 extern void COM_Init_Commands(void);
941 extern void FS_Init_Commands(void);
942 extern qboolean host_stuffcmdsrun;
943
944 /*
945 ====================
946 Host_Init
947 ====================
948 */
949 static void Host_Init (void)
950 {
951         int i;
952         const char* os;
953
954         if (COM_CheckParm("-profilegameonly"))
955                 Sys_AllowProfiling(false);
956
957         // LordHavoc: quake never seeded the random number generator before... heh
958         if (COM_CheckParm("-benchmark"))
959                 srand(0); // predictable random sequence for -benchmark
960         else
961                 srand(time(NULL));
962
963         // FIXME: this is evil, but possibly temporary
964 // COMMANDLINEOPTION: Console: -developer enables warnings and other notices (RECOMMENDED for mod developers)
965         if (COM_CheckParm("-developer"))
966         {
967                 developer.value = developer.integer = 1;
968                 developer.string = "1";
969         }
970
971         if (COM_CheckParm("-developer2"))
972         {
973                 developer.value = developer.integer = 100;
974                 developer.string = "100";
975                 developer_memory.value = developer_memory.integer = 100;
976                 developer.string = "100";
977                 developer_memorydebug.value = developer_memorydebug.integer = 100;
978                 developer_memorydebug.string = "100";
979         }
980
981 // COMMANDLINEOPTION: Console: -nostdout disables text output to the terminal the game was launched from
982         if (COM_CheckParm("-nostdout"))
983                 sys_nostdout = 1;
984
985         // used by everything
986         Memory_Init();
987
988         // initialize console command/cvar/alias/command execution systems
989         Cmd_Init();
990
991         // initialize memory subsystem cvars/commands
992         Memory_Init_Commands();
993
994         // initialize console and logging and its cvars/commands
995         Con_Init();
996
997         // initialize various cvars that could not be initialized earlier
998         Curl_Init_Commands();
999         Cmd_Init_Commands();
1000         Sys_Init_Commands();
1001         COM_Init_Commands();
1002         FS_Init_Commands();
1003
1004         // initialize console window (only used by sys_win.c)
1005         Sys_InitConsole();
1006
1007         // detect gamemode from commandline options or executable name
1008         COM_InitGameType();
1009
1010         // construct a version string for the corner of the console
1011         os = DP_OS_NAME;
1012         dpsnprintf (engineversion, sizeof (engineversion), "%s %s %s", gamename, os, buildstring);
1013         Con_Printf("%s\n", engineversion);
1014
1015         // initialize ixtable
1016         Mathlib_Init();
1017
1018         // initialize filesystem (including fs_basedir, fs_gamedir, -game, scr_screenshot_name)
1019         FS_Init();
1020
1021         NetConn_Init();
1022         Curl_Init();
1023         //PR_Init();
1024         //PR_Cmd_Init();
1025         PRVM_Init();
1026         Mod_Init();
1027         World_Init();
1028         SV_Init();
1029         Host_InitCommands();
1030         Host_InitLocal();
1031         Host_ServerOptions();
1032
1033         if (cls.state == ca_dedicated)
1034                 Cmd_AddCommand ("disconnect", CL_Disconnect_f, "disconnect from server (or disconnect all clients if running a server)");
1035         else
1036         {
1037                 Con_DPrintf("Initializing client\n");
1038
1039                 R_Modules_Init();
1040                 Palette_Init();
1041                 MR_Init_Commands();
1042                 VID_Shared_Init();
1043                 VID_Init();
1044                 Render_Init();
1045                 S_Init();
1046                 CDAudio_Init();
1047                 Key_Init();
1048                 V_Init();
1049                 CL_Init();
1050         }
1051
1052         // set up the default startmap_sp and startmap_dm aliases (mods can
1053         // override these) and then execute the quake.rc startup script
1054         if (gamemode == GAME_NEHAHRA)
1055                 Cbuf_AddText("alias startmap_sp \"map nehstart\"\nalias startmap_dm \"map nehstart\"\nexec quake.rc\n");
1056         else if (gamemode == GAME_TRANSFUSION)
1057                 Cbuf_AddText("alias startmap_sp \"map e1m1\"\n""alias startmap_dm \"map bb1\"\nexec quake.rc\n");
1058         else if (gamemode == GAME_TEU)
1059                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec teu.rc\n");
1060         else
1061                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec quake.rc\n");
1062         Cbuf_Execute();
1063
1064         // if stuffcmds wasn't run, then quake.rc is probably missing, use default
1065         if (!host_stuffcmdsrun)
1066         {
1067                 Cbuf_AddText("exec default.cfg\nexec config.cfg\nexec autoexec.cfg\nstuffcmds\n");
1068                 Cbuf_Execute();
1069         }
1070
1071         // put up the loading image so the user doesn't stare at a black screen...
1072         SCR_BeginLoadingPlaque();
1073
1074         // FIXME: put this into some neat design, but the menu should be allowed to crash
1075         // without crashing the whole game, so this should just be a short-time solution
1076
1077         // here comes the not so critical stuff
1078         if (setjmp(host_abortframe)) {
1079                 return;
1080         }
1081
1082         if (cls.state != ca_dedicated)
1083         {
1084                 MR_Init();
1085         }
1086
1087         // check for special benchmark mode
1088 // 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)
1089         i = COM_CheckParm("-benchmark");
1090         if (i && i + 1 < com_argc)
1091         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1092         {
1093                 Cbuf_AddText(va("timedemo %s\n", com_argv[i + 1]));
1094                 Cbuf_Execute();
1095         }
1096
1097         // check for special demo mode
1098 // COMMANDLINEOPTION: Client: -demo <demoname> runs a playdemo and quits
1099         i = COM_CheckParm("-demo");
1100         if (i && i + 1 < com_argc)
1101         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1102         {
1103                 Cbuf_AddText(va("playdemo %s\n", com_argv[i + 1]));
1104                 Cbuf_Execute();
1105         }
1106
1107 // COMMANDLINEOPTION: Client: -capturedemo <demoname> captures a playdemo and quits
1108         i = COM_CheckParm("-capturedemo");
1109         if (i && i + 1 < com_argc)
1110         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1111         {
1112                 Cbuf_AddText(va("playdemo %s\ncl_capturevideo 1\n", com_argv[i + 1]));
1113                 Cbuf_Execute();
1114         }
1115
1116         if (cls.state == ca_dedicated || COM_CheckParm("-listen"))
1117         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1118         {
1119                 Cbuf_AddText("startmap_dm\n");
1120                 Cbuf_Execute();
1121         }
1122
1123         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1124         {
1125                 Cbuf_AddText("togglemenu\n");
1126                 Cbuf_Execute();
1127         }
1128
1129         Con_DPrint("========Initialized=========\n");
1130
1131         //Host_StartVideo();
1132 }
1133
1134
1135 /*
1136 ===============
1137 Host_Shutdown
1138
1139 FIXME: this is a callback from Sys_Quit and Sys_Error.  It would be better
1140 to run quit through here before the final handoff to the sys code.
1141 ===============
1142 */
1143 void Host_Shutdown(void)
1144 {
1145         static qboolean isdown = false;
1146
1147         if (isdown)
1148         {
1149                 Con_Print("recursive shutdown\n");
1150                 return;
1151         }
1152         if (setjmp(host_abortframe))
1153         {
1154                 Con_Print("aborted the quitting frame?!?\n");
1155                 return;
1156         }
1157         isdown = true;
1158
1159         // be quiet while shutting down
1160         S_StopAllSounds();
1161
1162         // disconnect client from server if active
1163         CL_Disconnect();
1164
1165         // shut down local server if active
1166         Host_ShutdownServer ();
1167
1168         // Shutdown menu
1169         if(MR_Shutdown)
1170                 MR_Shutdown();
1171
1172         // AK shutdown PRVM
1173         // AK hmm, no PRVM_Shutdown(); yet
1174
1175         CL_Gecko_Shutdown();
1176         CL_Video_Shutdown();
1177
1178         Host_SaveConfig();
1179
1180         CDAudio_Shutdown ();
1181         S_Terminate ();
1182         Curl_Shutdown ();
1183         NetConn_Shutdown ();
1184         //PR_Shutdown ();
1185
1186         if (cls.state != ca_dedicated)
1187         {
1188                 R_Modules_Shutdown();
1189                 VID_Shutdown();
1190         }
1191
1192         Cmd_Shutdown();
1193         CL_Shutdown();
1194         Sys_Shutdown();
1195         Log_Close();
1196         FS_Shutdown();
1197         Memory_Shutdown();
1198 }
1199