]> de.git.xonotic.org Git - xonotic/darkplaces.git/blob - host.c
changed r_speeds labels again, less csqc monitoring and more consistent
[xonotic/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 #include "snd_main.h"
33
34 /*
35
36 A server can always be started, even if the system started out as a client
37 to a remote system.
38
39 A client can NOT be started if the system started as a dedicated server.
40
41 Memory is cleared / released when a server or client begins, not when they end.
42
43 */
44
45 // how many frames have occurred
46 // (checked by Host_Error and Host_SaveConfig_f)
47 int host_framecount = 0;
48 // LordHavoc: set when quit is executed
49 qboolean host_shuttingdown = false;
50
51 // the real time since application started, without any slowmo or clamping
52 double realtime;
53
54 // current client
55 client_t *host_client;
56
57 jmp_buf host_abortframe;
58 double host_starttime = 0;
59
60 // pretend frames take this amount of time (in seconds), 0 = realtime
61 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"};
62 // shows time used by certain subsystems
63 cvar_t host_speeds = {0, "host_speeds","0", "reports how much time is used in server/graphics/sound"};
64 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"};
65 cvar_t cl_minfps_fade = {CVAR_SAVE, "cl_minfps_fade", "0.2", "how fast the quality adapts to varying framerate"};
66 cvar_t cl_minfps_qualitymax = {CVAR_SAVE, "cl_minfps_qualitymax", "1", "highest allowed drawdistance multiplier"};
67 cvar_t cl_minfps_qualitymin = {CVAR_SAVE, "cl_minfps_qualitymin", "0.25", "lowest allowed drawdistance multiplier"};
68 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"};
69 cvar_t cl_minfps_qualityscale = {CVAR_SAVE, "cl_minfps_qualityscale", "0.5", "multiplier for quality"};
70 cvar_t cl_maxfps = {CVAR_SAVE, "cl_maxfps", "0", "maximum fps cap, 0 = unlimited, if game is running faster than this it will wait before running another frame (useful to make cpu time available to other programs)"};
71 cvar_t cl_maxfps_alwayssleep = {0, "cl_maxfps_alwayssleep","1", "gives up some processing time to other applications each frame, value in milliseconds, disabled if cl_maxfps is 0"};
72 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"};
73
74 cvar_t developer = {CVAR_SAVE, "developer","0", "prints debugging messages and information (recommended for all developers and level designers)"};
75 cvar_t developer_extra = {0, "developer_extra", "0", "prints additional debugging messages, often very verbose!"};
76 cvar_t developer_insane = {0, "developer_insane", "0", "prints huge streams of information about internal workings, entire contents of files being read/written, etc.  Not recommended!"};
77 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)"};
78 cvar_t developer_loading = {0, "developer_loading","0", "prints information about files as they are loaded or unloaded successfully"};
79 cvar_t developer_entityparsing = {0, "developer_entityparsing", "0", "prints detailed network entities information each time a packet is received"};
80
81 cvar_t timestamps = {CVAR_SAVE, "timestamps", "0", "prints timestamps on console messages"};
82 cvar_t timeformat = {CVAR_SAVE, "timeformat", "[%Y-%m-%d %H:%M:%S] ", "time format to use on timestamped console messages"};
83
84 /*
85 ================
86 Host_AbortCurrentFrame
87
88 aborts the current host frame and goes on with the next one
89 ================
90 */
91 void Host_AbortCurrentFrame(void)
92 {
93         longjmp (host_abortframe, 1);
94 }
95
96 /*
97 ================
98 Host_Error
99
100 This shuts down both the client and server
101 ================
102 */
103 void Host_Error (const char *error, ...)
104 {
105         static char hosterrorstring1[MAX_INPUTLINE];
106         static char hosterrorstring2[MAX_INPUTLINE];
107         static qboolean hosterror = false;
108         va_list argptr;
109
110         // turn off rcon redirect if it was active when the crash occurred
111         // to prevent loops when it is a networking problem
112         Con_Rcon_Redirect_Abort();
113
114         va_start (argptr,error);
115         dpvsnprintf (hosterrorstring1,sizeof(hosterrorstring1),error,argptr);
116         va_end (argptr);
117
118         Con_Printf("Host_Error: %s\n", hosterrorstring1);
119
120         // LordHavoc: if crashing very early, or currently shutting down, do
121         // Sys_Error instead
122         if (host_framecount < 3 || host_shuttingdown)
123                 Sys_Error ("Host_Error: %s", hosterrorstring1);
124
125         if (hosterror)
126                 Sys_Error ("Host_Error: recursively entered (original error was: %s    new error is: %s)", hosterrorstring2, hosterrorstring1);
127         hosterror = true;
128
129         strlcpy(hosterrorstring2, hosterrorstring1, sizeof(hosterrorstring2));
130
131         CL_Parse_DumpPacket();
132
133         CL_Parse_ErrorCleanUp();
134
135         //PR_Crash();
136
137         // print out where the crash happened, if it was caused by QC (and do a cleanup)
138         PRVM_Crash();
139
140
141         Host_ShutdownServer ();
142
143         if (cls.state == ca_dedicated)
144                 Sys_Error ("Host_Error: %s",hosterrorstring2);  // dedicated servers exit
145
146         CL_Disconnect ();
147         cls.demonum = -1;
148
149         hosterror = false;
150
151         Host_AbortCurrentFrame();
152 }
153
154 void Host_ServerOptions (void)
155 {
156         int i;
157
158         // general default
159         svs.maxclients = 8;
160
161 // COMMANDLINEOPTION: Server: -dedicated [playerlimit] starts a dedicated server (with a command console), default playerlimit is 8
162 // COMMANDLINEOPTION: Server: -listen [playerlimit] starts a multiplayer server with graphical client, like singleplayer but other players can connect, default playerlimit is 8
163         // if no client is in the executable or -dedicated is specified on
164         // commandline, start a dedicated server
165         i = COM_CheckParm ("-dedicated");
166         if (i || !cl_available)
167         {
168                 cls.state = ca_dedicated;
169                 // check for -dedicated specifying how many players
170                 if (i && i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
171                         svs.maxclients = atoi (com_argv[i+1]);
172                 if (COM_CheckParm ("-listen"))
173                         Con_Printf ("Only one of -dedicated or -listen can be specified\n");
174                 // default sv_public on for dedicated servers (often hosted by serious administrators), off for listen servers (often hosted by clueless users)
175                 Cvar_SetValue("sv_public", 1);
176         }
177         else if (cl_available)
178         {
179                 // client exists and not dedicated, check if -listen is specified
180                 cls.state = ca_disconnected;
181                 i = COM_CheckParm ("-listen");
182                 if (i)
183                 {
184                         // default players unless specified
185                         if (i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
186                                 svs.maxclients = atoi (com_argv[i+1]);
187                 }
188                 else
189                 {
190                         // default players in some games, singleplayer in most
191                         if (gamemode != GAME_GOODVSBAD2 && gamemode != GAME_NEXUIZ && gamemode != GAME_BATTLEMECH)
192                                 svs.maxclients = 1;
193                 }
194         }
195
196         svs.maxclients = svs.maxclients_next = bound(1, svs.maxclients, MAX_SCOREBOARD);
197
198         svs.clients = (client_t *)Mem_Alloc(sv_mempool, sizeof(client_t) * svs.maxclients);
199
200         if (svs.maxclients > 1 && !deathmatch.integer && !coop.integer)
201                 Cvar_SetValueQuick(&deathmatch, 1);
202 }
203
204 /*
205 =======================
206 Host_InitLocal
207 ======================
208 */
209 void Host_SaveConfig_f(void);
210 void Host_LoadConfig_f(void);
211 extern cvar_t sv_writepicture_quality;
212 static void Host_InitLocal (void)
213 {
214         Cmd_AddCommand("saveconfig", Host_SaveConfig_f, "save settings to config.cfg (or a specified filename) immediately (also automatic when quitting)");
215         Cmd_AddCommand("loadconfig", Host_LoadConfig_f, "reset everything and reload configs");
216
217         Cvar_RegisterVariable (&host_framerate);
218         Cvar_RegisterVariable (&host_speeds);
219         Cvar_RegisterVariable (&cl_minfps);
220         Cvar_RegisterVariable (&cl_minfps_fade);
221         Cvar_RegisterVariable (&cl_minfps_qualitymax);
222         Cvar_RegisterVariable (&cl_minfps_qualitymin);
223         Cvar_RegisterVariable (&cl_minfps_qualitypower);
224         Cvar_RegisterVariable (&cl_minfps_qualityscale);
225         Cvar_RegisterVariable (&cl_maxfps);
226         Cvar_RegisterVariable (&cl_maxfps_alwayssleep);
227         Cvar_RegisterVariable (&cl_maxidlefps);
228
229         Cvar_RegisterVariable (&developer);
230         Cvar_RegisterVariable (&developer_extra);
231         Cvar_RegisterVariable (&developer_insane);
232         Cvar_RegisterVariable (&developer_loadfile);
233         Cvar_RegisterVariable (&developer_loading);
234         Cvar_RegisterVariable (&developer_entityparsing);
235
236         Cvar_RegisterVariable (&timestamps);
237         Cvar_RegisterVariable (&timeformat);
238
239         Cvar_RegisterVariable (&sv_writepicture_quality);
240 }
241
242
243 /*
244 ===============
245 Host_SaveConfig_f
246
247 Writes key bindings and archived cvars to config.cfg
248 ===============
249 */
250 void Host_SaveConfig_to(const char *file)
251 {
252         qfile_t *f;
253
254 // dedicated servers initialize the host but don't parse and set the
255 // config.cfg cvars
256         // LordHavoc: don't save a config if it crashed in startup
257         if (host_framecount >= 3 && cls.state != ca_dedicated && !COM_CheckParm("-benchmark") && !COM_CheckParm("-capturedemo"))
258         {
259                 f = FS_OpenRealFile(file, "wb", false);
260                 if (!f)
261                 {
262                         Con_Printf("Couldn't write %s.\n", file);
263                         return;
264                 }
265
266                 Key_WriteBindings (f);
267                 Cvar_WriteVariables (f);
268
269                 FS_Close (f);
270         }
271 }
272 void Host_SaveConfig(void)
273 {
274         Host_SaveConfig_to(CONFIGFILENAME);
275 }
276 void Host_SaveConfig_f(void)
277 {
278         const char *file = CONFIGFILENAME;
279
280         if(Cmd_Argc() >= 2) {
281                 file = Cmd_Argv(1);
282                 Con_Printf("Saving to %s\n", file);
283         }
284
285         Host_SaveConfig_to(file);
286 }
287
288 /*
289 ===============
290 Host_LoadConfig_f
291
292 Resets key bindings and cvars to defaults and then reloads scripts
293 ===============
294 */
295 void Host_LoadConfig_f(void)
296 {
297         // unlock the cvar default strings so they can be updated by the new default.cfg
298         Cvar_UnlockDefaults();
299         // reset cvars to their defaults, and then exec startup scripts again
300         Cbuf_InsertText("cvar_resettodefaults_all;exec " STARTCONFIGFILENAME "\n");
301 }
302
303 /*
304 =================
305 SV_ClientPrint
306
307 Sends text across to be displayed
308 FIXME: make this just a stuffed echo?
309 =================
310 */
311 void SV_ClientPrint(const char *msg)
312 {
313         if (host_client->netconnection)
314         {
315                 MSG_WriteByte(&host_client->netconnection->message, svc_print);
316                 MSG_WriteString(&host_client->netconnection->message, msg);
317         }
318 }
319
320 /*
321 =================
322 SV_ClientPrintf
323
324 Sends text across to be displayed
325 FIXME: make this just a stuffed echo?
326 =================
327 */
328 void SV_ClientPrintf(const char *fmt, ...)
329 {
330         va_list argptr;
331         char msg[MAX_INPUTLINE];
332
333         va_start(argptr,fmt);
334         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
335         va_end(argptr);
336
337         SV_ClientPrint(msg);
338 }
339
340 /*
341 =================
342 SV_BroadcastPrint
343
344 Sends text to all active clients
345 =================
346 */
347 void SV_BroadcastPrint(const char *msg)
348 {
349         int i;
350         client_t *client;
351
352         for (i = 0, client = svs.clients;i < svs.maxclients;i++, client++)
353         {
354                 if (client->active && client->netconnection)
355                 {
356                         MSG_WriteByte(&client->netconnection->message, svc_print);
357                         MSG_WriteString(&client->netconnection->message, msg);
358                 }
359         }
360
361         if (sv_echobprint.integer && cls.state == ca_dedicated)
362                 Con_Print(msg);
363 }
364
365 /*
366 =================
367 SV_BroadcastPrintf
368
369 Sends text to all active clients
370 =================
371 */
372 void SV_BroadcastPrintf(const char *fmt, ...)
373 {
374         va_list argptr;
375         char msg[MAX_INPUTLINE];
376
377         va_start(argptr,fmt);
378         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
379         va_end(argptr);
380
381         SV_BroadcastPrint(msg);
382 }
383
384 /*
385 =================
386 Host_ClientCommands
387
388 Send text over to the client to be executed
389 =================
390 */
391 void Host_ClientCommands(const char *fmt, ...)
392 {
393         va_list argptr;
394         char string[MAX_INPUTLINE];
395
396         if (!host_client->netconnection)
397                 return;
398
399         va_start(argptr,fmt);
400         dpvsnprintf(string, sizeof(string), fmt, argptr);
401         va_end(argptr);
402
403         MSG_WriteByte(&host_client->netconnection->message, svc_stufftext);
404         MSG_WriteString(&host_client->netconnection->message, string);
405 }
406
407 /*
408 =====================
409 SV_DropClient
410
411 Called when the player is getting totally kicked off the host
412 if (crash = true), don't bother sending signofs
413 =====================
414 */
415 void SV_DropClient(qboolean crash)
416 {
417         int i;
418         Con_Printf("Client \"%s\" dropped\n", host_client->name);
419
420         SV_StopDemoRecording(host_client);
421
422         // make sure edict is not corrupt (from a level change for example)
423         host_client->edict = PRVM_EDICT_NUM(host_client - svs.clients + 1);
424
425         if (host_client->netconnection)
426         {
427                 // free the client (the body stays around)
428                 if (!crash)
429                 {
430                         // LordHavoc: no opportunity for resending, so use unreliable 3 times
431                         unsigned char bufdata[8];
432                         sizebuf_t buf;
433                         memset(&buf, 0, sizeof(buf));
434                         buf.data = bufdata;
435                         buf.maxsize = sizeof(bufdata);
436                         MSG_WriteByte(&buf, svc_disconnect);
437                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
438                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
439                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
440                 }
441                 // break the net connection
442                 NetConn_Close(host_client->netconnection);
443                 host_client->netconnection = NULL;
444         }
445
446         // call qc ClientDisconnect function
447         // LordHavoc: don't call QC if server is dead (avoids recursive
448         // Host_Error in some mods when they run out of edicts)
449         if (host_client->clientconnectcalled && sv.active && host_client->edict)
450         {
451                 // call the prog function for removing a client
452                 // this will set the body to a dead frame, among other things
453                 int saveSelf = prog->globals.server->self;
454                 host_client->clientconnectcalled = false;
455                 prog->globals.server->self = PRVM_EDICT_TO_PROG(host_client->edict);
456                 PRVM_ExecuteProgram(prog->globals.server->ClientDisconnect, "QC function ClientDisconnect is missing");
457                 prog->globals.server->self = saveSelf;
458         }
459
460         // if a download is active, close it
461         if (host_client->download_file)
462         {
463                 Con_DPrintf("Download of %s aborted when %s dropped\n", host_client->download_name, host_client->name);
464                 FS_Close(host_client->download_file);
465                 host_client->download_file = NULL;
466                 host_client->download_name[0] = 0;
467                 host_client->download_expectedposition = 0;
468                 host_client->download_started = false;
469         }
470
471         // remove leaving player from scoreboard
472         host_client->name[0] = 0;
473         host_client->colors = 0;
474         host_client->frags = 0;
475         // send notification to all clients
476         // get number of client manually just to make sure we get it right...
477         i = host_client - svs.clients;
478         MSG_WriteByte (&sv.reliable_datagram, svc_updatename);
479         MSG_WriteByte (&sv.reliable_datagram, i);
480         MSG_WriteString (&sv.reliable_datagram, host_client->name);
481         MSG_WriteByte (&sv.reliable_datagram, svc_updatecolors);
482         MSG_WriteByte (&sv.reliable_datagram, i);
483         MSG_WriteByte (&sv.reliable_datagram, host_client->colors);
484         MSG_WriteByte (&sv.reliable_datagram, svc_updatefrags);
485         MSG_WriteByte (&sv.reliable_datagram, i);
486         MSG_WriteShort (&sv.reliable_datagram, host_client->frags);
487
488         // free the client now
489         if (host_client->entitydatabase)
490                 EntityFrame_FreeDatabase(host_client->entitydatabase);
491         if (host_client->entitydatabase4)
492                 EntityFrame4_FreeDatabase(host_client->entitydatabase4);
493         if (host_client->entitydatabase5)
494                 EntityFrame5_FreeDatabase(host_client->entitydatabase5);
495
496         if (sv.active)
497         {
498                 // clear a fields that matter to DP_SV_CLIENTNAME and DP_SV_CLIENTCOLORS, and also frags
499                 PRVM_ED_ClearEdict(host_client->edict);
500         }
501
502         // clear the client struct (this sets active to false)
503         memset(host_client, 0, sizeof(*host_client));
504
505         // update server listing on the master because player count changed
506         // (which the master uses for filtering empty/full servers)
507         NetConn_Heartbeat(1);
508
509         if (sv.loadgame)
510         {
511                 for (i = 0;i < svs.maxclients;i++)
512                         if (svs.clients[i].active && !svs.clients[i].spawned)
513                                 break;
514                 if (i == svs.maxclients)
515                 {
516                         Con_Printf("Loaded game, everyone rejoined - unpausing\n");
517                         sv.paused = sv.loadgame = false; // we're basically done with loading now
518                 }
519         }
520 }
521
522 /*
523 ==================
524 Host_ShutdownServer
525
526 This only happens at the end of a game, not between levels
527 ==================
528 */
529 void Host_ShutdownServer(void)
530 {
531         int i;
532
533         Con_DPrintf("Host_ShutdownServer\n");
534
535         if (!sv.active)
536                 return;
537
538         NetConn_Heartbeat(2);
539         NetConn_Heartbeat(2);
540
541 // make sure all the clients know we're disconnecting
542         SV_VM_Begin();
543         World_End(&sv.world);
544         if(prog->loaded)
545                 if(prog->funcoffsets.SV_Shutdown)
546                 {
547                         func_t s = prog->funcoffsets.SV_Shutdown;
548                         prog->funcoffsets.SV_Shutdown = 0; // prevent it from getting called again
549                         PRVM_ExecuteProgram(s,"SV_Shutdown() required");
550                 }
551         for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
552                 if (host_client->active)
553                         SV_DropClient(false); // server shutdown
554         SV_VM_End();
555
556         NetConn_CloseServerPorts();
557
558         sv.active = false;
559 //
560 // clear structures
561 //
562         memset(&sv, 0, sizeof(sv));
563         memset(svs.clients, 0, svs.maxclients*sizeof(client_t));
564 }
565
566
567 //============================================================================
568
569 /*
570 ===================
571 Host_GetConsoleCommands
572
573 Add them exactly as if they had been typed at the console
574 ===================
575 */
576 void Host_GetConsoleCommands (void)
577 {
578         char *cmd;
579
580         while (1)
581         {
582                 cmd = Sys_ConsoleInput ();
583                 if (!cmd)
584                         break;
585                 Cbuf_AddText (cmd);
586         }
587 }
588
589 /*
590 ==================
591 Host_TimeReport
592
593 Returns a time report string, for example for
594 ==================
595 */
596 const char *Host_TimingReport(void)
597 {
598         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);
599 }
600
601 /*
602 ==================
603 Host_Frame
604
605 Runs all active servers
606 ==================
607 */
608 static void Host_Init(void);
609 void Host_Main(void)
610 {
611         double time1 = 0;
612         double time2 = 0;
613         double time3 = 0;
614         double cl_timer, sv_timer;
615         double clframetime, deltarealtime, oldrealtime;
616         double wait;
617         int pass1, pass2, pass3, i;
618
619         Host_Init();
620
621         cl_timer = 0;
622         sv_timer = 0;
623
624         realtime = host_starttime = Sys_DoubleTime();
625         for (;;)
626         {
627                 if (setjmp(host_abortframe))
628                 {
629                         SCR_ClearLoadingScreen(false);
630                         continue;                       // something bad happened, or the server disconnected
631                 }
632
633                 oldrealtime = realtime;
634                 realtime = Sys_DoubleTime();
635
636                 deltarealtime = realtime - oldrealtime;
637                 cl_timer += deltarealtime;
638                 sv_timer += deltarealtime;
639
640                 svs.perf_acc_realtime += deltarealtime;
641
642                 // Look for clients who have spawned
643                 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
644                         if(host_client->spawned)
645                                 if(host_client->netconnection)
646                                         break;
647                 if(i == svs.maxclients)
648                 {
649                         // Nobody is looking? Then we won't do timing...
650                         // Instead, reset it to zero
651                         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;
652                 }
653                 else if(svs.perf_acc_realtime > 5)
654                 {
655                         svs.perf_cpuload = 1 - svs.perf_acc_sleeptime / svs.perf_acc_realtime;
656                         svs.perf_lost = svs.perf_acc_lost / svs.perf_acc_realtime;
657                         if(svs.perf_acc_offset_samples > 0)
658                         {
659                                 svs.perf_offset_max = svs.perf_acc_offset_max;
660                                 svs.perf_offset_avg = svs.perf_acc_offset / svs.perf_acc_offset_samples;
661                                 svs.perf_offset_sdev = sqrt(svs.perf_acc_offset_squared / svs.perf_acc_offset_samples - svs.perf_offset_avg * svs.perf_offset_avg);
662                         }
663                         if(svs.perf_lost > 0 && developer_extra.integer)
664                                 Con_DPrintf("Server can't keep up: %s\n", Host_TimingReport());
665                         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;
666                 }
667
668                 if (slowmo.value < 0.00001 && slowmo.value != 0)
669                         Cvar_SetValue("slowmo", 0);
670                 if (host_framerate.value < 0.00001 && host_framerate.value != 0)
671                         Cvar_SetValue("host_framerate", 0);
672
673                 // keep the random time dependent, but not when playing demos/benchmarking
674                 if(!*sv_random_seed.string && !cls.demoplayback)
675                         rand();
676
677                 cl.islocalgame = NetConn_IsLocalGame();
678
679                 // get new key events
680                 SndSys_SendKeyEvents();
681                 Sys_SendKeyEvents();
682
683                 NetConn_UpdateSockets();
684
685                 Log_DestBuffer_Flush();
686
687                 // receive packets on each main loop iteration, as the main loop may
688                 // be undersleeping due to select() detecting a new packet
689                 if (sv.active)
690                         NetConn_ServerFrame();
691
692                 Curl_Run();
693
694                 // check for commands typed to the host
695                 Host_GetConsoleCommands();
696
697                 // when a server is running we only execute console commands on server frames
698                 // (this mainly allows frikbot .way config files to work properly by staying in sync with the server qc)
699                 // otherwise we execute them on client frames
700                 if (sv.active ? sv_timer > 0 : cl_timer > 0)
701                 {
702                         // process console commands
703 //                      R_TimeReport("preconsole");
704                         CL_VM_PreventInformationLeaks();
705                         Cbuf_Execute();
706 //                      R_TimeReport("console");
707                 }
708
709                 //Con_Printf("%6.0f %6.0f\n", cl_timer * 1000000.0, sv_timer * 1000000.0);
710
711                 // if the accumulators haven't become positive yet, wait a while
712                 if (cls.state == ca_dedicated)
713                         wait = sv_timer * -1000000.0;
714                 else if (!sv.active)
715                         wait = cl_timer * -1000000.0;
716                 else
717                         wait = max(cl_timer, sv_timer) * -1000000.0;
718                 wait = bound(0, wait, 100000);
719
720                 if (!cls.timedemo && wait >= 1)
721                 {
722                         double time0 = Sys_DoubleTime();
723                         if (sv_checkforpacketsduringsleep.integer && !sys_usenoclockbutbenchmark.integer)
724                                 NetConn_SleepMicroseconds((int)wait);
725                         else
726                                 Sys_Sleep((int)wait);
727                         svs.perf_acc_sleeptime += Sys_DoubleTime() - time0;
728 //                      R_TimeReport("sleep");
729                         continue;
730                 }
731
732                 R_TimeReport("---");
733
734         //-------------------
735         //
736         // server operations
737         //
738         //-------------------
739
740                 // limit the frametime steps to no more than 100ms each
741                 if (cl_timer > 0.1)
742                         cl_timer = 0.1;
743                 if (sv_timer > 0.1)
744                 {
745                         svs.perf_acc_lost += (sv_timer - 0.1);
746                         sv_timer = 0.1;
747                 }
748
749                 if (sv.active && sv_timer > 0)
750                 {
751                         // execute one or more server frames, with an upper limit on how much
752                         // execution time to spend on server frames to avoid freezing the game if
753                         // the server is overloaded, this execution time limit means the game will
754                         // slow down if the server is taking too long.
755                         int framecount, framelimit = 1;
756                         double advancetime, aborttime = 0;
757                         float offset;
758
759                         // run the world state
760                         // don't allow simulation to run too fast or too slow or logic glitches can occur
761
762                         // stop running server frames if the wall time reaches this value
763                         if (sys_ticrate.value <= 0)
764                                 advancetime = sv_timer;
765                         else if (cl.islocalgame && !sv_fixedframeratesingleplayer.integer)
766                         {
767                                 // synchronize to the client frametime, but no less than 10ms and no more than sys_ticrate
768                                 advancetime = bound(0.01, cl_timer, sys_ticrate.value);
769                                 framelimit = 10;
770                                 aborttime = realtime + 0.1;
771                         }
772                         else
773                         {
774                                 advancetime = sys_ticrate.value;
775                                 // listen servers can run multiple server frames per client frame
776                                 if (cls.state == ca_connected)
777                                 {
778                                         framelimit = 10;
779                                         aborttime = realtime + 0.1;
780                                 }
781                         }
782                         if(slowmo.value > 0 && slowmo.value < 1)
783                                 advancetime = min(advancetime, 0.1 / slowmo.value);
784                         else
785                                 advancetime = min(advancetime, 0.1);
786
787                         if(advancetime > 0)
788                         {
789                                 offset = sv_timer + (Sys_DoubleTime() - realtime);
790                                 ++svs.perf_acc_offset_samples;
791                                 svs.perf_acc_offset += offset;
792                                 svs.perf_acc_offset_squared += offset * offset;
793                                 if(svs.perf_acc_offset_max < offset)
794                                         svs.perf_acc_offset_max = offset;
795                         }
796
797                         // only advance time if not paused
798                         // the game also pauses in singleplayer when menu or console is used
799                         sv.frametime = advancetime * slowmo.value;
800                         if (host_framerate.value)
801                                 sv.frametime = host_framerate.value;
802                         if (sv.paused || (cl.islocalgame && (key_dest != key_game || key_consoleactive)))
803                                 sv.frametime = 0;
804
805                         // setup the VM frame
806                         SV_VM_Begin();
807
808                         for (framecount = 0;framecount < framelimit && sv_timer > 0;framecount++)
809                         {
810                                 sv_timer -= advancetime;
811
812                                 // move things around and think unless paused
813                                 if (sv.frametime)
814                                         SV_Physics();
815
816                                 // if this server frame took too long, break out of the loop
817                                 if (framelimit > 1 && Sys_DoubleTime() >= aborttime)
818                                         break;
819                         }
820                         R_TimeReport("serverphysics");
821
822                         // send all messages to the clients
823                         SV_SendClientMessages();
824                         
825                         if (sv.paused == 1 && realtime > sv.pausedstart && sv.pausedstart > 0) {
826                                 prog->globals.generic[OFS_PARM0] = realtime - sv.pausedstart;
827                                 PRVM_ExecuteProgram(prog->funcoffsets.SV_PausedTic, "QC function SV_PausedTic is missing");
828                         }
829
830                         // end the server VM frame
831                         SV_VM_End();
832
833                         // send an heartbeat if enough time has passed since the last one
834                         NetConn_Heartbeat(0);
835                         R_TimeReport("servernetwork");
836                 }
837                 else
838                 {
839                         // don't let r_speeds display jump around
840                         R_TimeReport("serverphysics");
841                         R_TimeReport("servernetwork");
842                 }
843
844         //-------------------
845         //
846         // client operations
847         //
848         //-------------------
849
850                 if (cls.state != ca_dedicated && (cl_timer > 0 || cls.timedemo || ((vid_activewindow ? cl_maxfps : cl_maxidlefps).value < 1)))
851                 {
852                         R_TimeReport("---");
853                         // decide the simulation time
854                         if (cls.capturevideo.active)
855                         {
856                                 //***
857                                 if (cls.capturevideo.realtime)
858                                         clframetime = cl.realframetime = max(cl_timer, 1.0 / cls.capturevideo.framerate);
859                                 else
860                                 {
861                                         clframetime = 1.0 / cls.capturevideo.framerate;
862                                         cl.realframetime = max(cl_timer, clframetime);
863                                 }
864                         }
865                         else if (vid_activewindow && cl_maxfps.value >= 1 && !cls.timedemo)
866                         {
867                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / cl_maxfps.value);
868                                 // when running slow, we need to sleep to keep input responsive
869                                 wait = bound(0, cl_maxfps_alwayssleep.value * 1000, 100000);
870                                 if (wait > 0)
871                                         Sys_Sleep((int)wait);
872                         }
873                         else if (!vid_activewindow && cl_maxidlefps.value >= 1 && !cls.timedemo)
874                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / cl_maxidlefps.value);
875                         else
876                                 clframetime = cl.realframetime = cl_timer;
877
878                         // apply slowmo scaling
879                         clframetime *= cl.movevars_timescale;
880                         // scale playback speed of demos by slowmo cvar
881                         if (cls.demoplayback)
882                         {
883                                 clframetime *= slowmo.value;
884                                 // if demo playback is paused, don't advance time at all
885                                 if (cls.demopaused)
886                                         clframetime = 0;
887                         }
888
889                         // host_framerate overrides all else
890                         if (host_framerate.value)
891                                 clframetime = host_framerate.value;
892
893                         if (cl.paused || (cl.islocalgame && (key_dest != key_game || key_consoleactive)))
894                                 clframetime = 0;
895
896                         if (cls.timedemo)
897                                 clframetime = cl.realframetime = cl_timer;
898
899                         // deduct the frame time from the accumulator
900                         cl_timer -= cl.realframetime;
901
902                         cl.oldtime = cl.time;
903                         cl.time += clframetime;
904
905                         // update video
906                         if (host_speeds.integer)
907                                 time1 = Sys_DoubleTime();
908                         R_TimeReport("pre-input");
909
910                         // Collect input into cmd
911                         CL_Input();
912
913                         R_TimeReport("input");
914
915                         // check for new packets
916                         NetConn_ClientFrame();
917
918                         // read a new frame from a demo if needed
919                         CL_ReadDemoMessage();
920                         R_TimeReport("clientnetwork");
921
922                         // now that packets have been read, send input to server
923                         CL_SendMove();
924                         R_TimeReport("sendmove");
925
926                         // update client world (interpolate entities, create trails, etc)
927                         CL_UpdateWorld();
928                         R_TimeReport("lerpworld");
929
930                         CL_Video_Frame();
931                         CL_Gecko_Frame();
932
933                         R_TimeReport("client");
934
935                         CL_UpdateScreen();
936                         R_TimeReport("render");
937
938                         if (host_speeds.integer)
939                                 time2 = Sys_DoubleTime();
940
941                         // update audio
942                         if(cl.csqc_usecsqclistener)
943                         {
944                                 S_Update(&cl.csqc_listenermatrix);
945                                 cl.csqc_usecsqclistener = false;
946                         }
947                         else
948                                 S_Update(&r_refdef.view.matrix);
949
950                         CDAudio_Update();
951                         R_TimeReport("audio");
952
953                         // reset gathering of mouse input
954                         in_mouse_x = in_mouse_y = 0;
955
956                         if (host_speeds.integer)
957                         {
958                                 pass1 = (int)((time1 - time3)*1000000);
959                                 time3 = Sys_DoubleTime();
960                                 pass2 = (int)((time2 - time1)*1000000);
961                                 pass3 = (int)((time3 - time2)*1000000);
962                                 Con_Printf("%6ius total %6ius server %6ius gfx %6ius snd\n",
963                                                         pass1+pass2+pass3, pass1, pass2, pass3);
964                         }
965                 }
966
967 #if MEMPARANOIA
968                 Mem_CheckSentinelsGlobal();
969 #else
970                 if (developer_memorydebug.integer)
971                         Mem_CheckSentinelsGlobal();
972 #endif
973
974                 // if there is some time remaining from this frame, reset the timers
975                 if (cl_timer >= 0)
976                         cl_timer = 0;
977                 if (sv_timer >= 0)
978                 {
979                         svs.perf_acc_lost += sv_timer;
980                         sv_timer = 0;
981                 }
982
983                 host_framecount++;
984         }
985 }
986
987 //============================================================================
988
989 qboolean vid_opened = false;
990 void Host_StartVideo(void)
991 {
992         if (!vid_opened && cls.state != ca_dedicated)
993         {
994                 vid_opened = true;
995                 // make sure we open sockets before opening video because the Windows Firewall "unblock?" dialog can screw up the graphics context on some graphics drivers
996                 NetConn_UpdateSockets();
997                 VID_Start();
998                 CDAudio_Startup();
999         }
1000 }
1001
1002 char engineversion[128];
1003
1004 qboolean sys_nostdout = false;
1005
1006 extern void u8_Init(void);
1007 extern void Render_Init(void);
1008 extern void Mathlib_Init(void);
1009 extern void FS_Init(void);
1010 extern void FS_Shutdown(void);
1011 extern void PR_Cmd_Init(void);
1012 extern void COM_Init_Commands(void);
1013 extern void FS_Init_Commands(void);
1014 extern qboolean host_stuffcmdsrun;
1015
1016 /*
1017 ====================
1018 Host_Init
1019 ====================
1020 */
1021 static void Host_Init (void)
1022 {
1023         int i;
1024         const char* os;
1025
1026         if (COM_CheckParm("-profilegameonly"))
1027                 Sys_AllowProfiling(false);
1028
1029         // LordHavoc: quake never seeded the random number generator before... heh
1030         if (COM_CheckParm("-benchmark"))
1031                 srand(0); // predictable random sequence for -benchmark
1032         else
1033                 srand((unsigned int)time(NULL));
1034
1035         // FIXME: this is evil, but possibly temporary
1036         // LordHavoc: doesn't seem very temporary...
1037         // LordHavoc: made this a saved cvar
1038 // COMMANDLINEOPTION: Console: -developer enables warnings and other notices (RECOMMENDED for mod developers)
1039         if (COM_CheckParm("-developer"))
1040         {
1041                 developer.value = developer.integer = 1;
1042                 developer.string = "1";
1043         }
1044
1045         if (COM_CheckParm("-developer2"))
1046         {
1047                 developer.value = developer.integer = 1;
1048                 developer.string = "1";
1049                 developer_extra.value = developer_extra.integer = 1;
1050                 developer_extra.string = "1";
1051                 developer_insane.value = developer_insane.integer = 1;
1052                 developer_insane.string = "1";
1053                 developer_memory.value = developer_memory.integer = 1;
1054                 developer_memory.string = "1";
1055                 developer_memorydebug.value = developer_memorydebug.integer = 1;
1056                 developer_memorydebug.string = "1";
1057         }
1058
1059 // COMMANDLINEOPTION: Console: -nostdout disables text output to the terminal the game was launched from
1060         if (COM_CheckParm("-nostdout"))
1061                 sys_nostdout = 1;
1062
1063         // used by everything
1064         Memory_Init();
1065
1066         // initialize console command/cvar/alias/command execution systems
1067         Cmd_Init();
1068
1069         // initialize memory subsystem cvars/commands
1070         Memory_Init_Commands();
1071
1072         // initialize console and logging and its cvars/commands
1073         Con_Init();
1074
1075         // initialize various cvars that could not be initialized earlier
1076         u8_Init();
1077         Curl_Init_Commands();
1078         Cmd_Init_Commands();
1079         Sys_Init_Commands();
1080         COM_Init_Commands();
1081         FS_Init_Commands();
1082
1083         // initialize console window (only used by sys_win.c)
1084         Sys_InitConsole();
1085
1086         // detect gamemode from commandline options or executable name
1087         COM_InitGameType();
1088
1089         // construct a version string for the corner of the console
1090         os = DP_OS_NAME;
1091         dpsnprintf (engineversion, sizeof (engineversion), "%s %s %s", gamename, os, buildstring);
1092         Con_Printf("%s\n", engineversion);
1093
1094         // initialize ixtable
1095         Mathlib_Init();
1096
1097         // initialize filesystem (including fs_basedir, fs_gamedir, -game, scr_screenshot_name)
1098         FS_Init();
1099
1100         NetConn_Init();
1101         Curl_Init();
1102         //PR_Init();
1103         //PR_Cmd_Init();
1104         PRVM_Init();
1105         Mod_Init();
1106         World_Init();
1107         SV_Init();
1108         Host_InitCommands();
1109         Host_InitLocal();
1110         Host_ServerOptions();
1111
1112         if (cls.state == ca_dedicated)
1113                 Cmd_AddCommand ("disconnect", CL_Disconnect_f, "disconnect from server (or disconnect all clients if running a server)");
1114         else
1115         {
1116                 Con_DPrintf("Initializing client\n");
1117
1118                 R_Modules_Init();
1119                 Palette_Init();
1120                 MR_Init_Commands();
1121                 VID_Shared_Init();
1122                 VID_Init();
1123                 Render_Init();
1124                 S_Init();
1125                 CDAudio_Init();
1126                 Key_Init();
1127                 V_Init();
1128                 CL_Init();
1129         }
1130
1131         // set up the default startmap_sp and startmap_dm aliases (mods can
1132         // override these) and then execute the quake.rc startup script
1133         if (gamemode == GAME_NEHAHRA)
1134                 Cbuf_AddText("alias startmap_sp \"map nehstart\"\nalias startmap_dm \"map nehstart\"\nexec " STARTCONFIGFILENAME "\n");
1135         else if (gamemode == GAME_TRANSFUSION)
1136                 Cbuf_AddText("alias startmap_sp \"map e1m1\"\n""alias startmap_dm \"map bb1\"\nexec " STARTCONFIGFILENAME "\n");
1137         else if (gamemode == GAME_TEU)
1138                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec teu.rc\n");
1139         else
1140                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec " STARTCONFIGFILENAME "\n");
1141         Cbuf_Execute();
1142
1143         // if stuffcmds wasn't run, then quake.rc is probably missing, use default
1144         if (!host_stuffcmdsrun)
1145         {
1146                 Cbuf_AddText("exec default.cfg\nexec " CONFIGFILENAME "\nexec autoexec.cfg\nstuffcmds\n");
1147                 Cbuf_Execute();
1148         }
1149
1150         // put up the loading image so the user doesn't stare at a black screen...
1151         SCR_BeginLoadingPlaque();
1152
1153         // FIXME: put this into some neat design, but the menu should be allowed to crash
1154         // without crashing the whole game, so this should just be a short-time solution
1155
1156         // here comes the not so critical stuff
1157         if (setjmp(host_abortframe)) {
1158                 return;
1159         }
1160
1161         if (cls.state != ca_dedicated)
1162         {
1163                 MR_Init();
1164         }
1165
1166         // check for special benchmark mode
1167 // 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)
1168         i = COM_CheckParm("-benchmark");
1169         if (i && i + 1 < com_argc)
1170         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1171         {
1172                 Cbuf_AddText(va("timedemo %s\n", com_argv[i + 1]));
1173                 Cbuf_Execute();
1174         }
1175
1176         // check for special demo mode
1177 // COMMANDLINEOPTION: Client: -demo <demoname> runs a playdemo and quits
1178         i = COM_CheckParm("-demo");
1179         if (i && i + 1 < com_argc)
1180         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1181         {
1182                 Cbuf_AddText(va("playdemo %s\n", com_argv[i + 1]));
1183                 Cbuf_Execute();
1184         }
1185
1186 // COMMANDLINEOPTION: Client: -capturedemo <demoname> captures a playdemo and quits
1187         i = COM_CheckParm("-capturedemo");
1188         if (i && i + 1 < com_argc)
1189         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1190         {
1191                 Cbuf_AddText(va("playdemo %s\ncl_capturevideo 1\n", com_argv[i + 1]));
1192                 Cbuf_Execute();
1193         }
1194
1195         if (cls.state == ca_dedicated || COM_CheckParm("-listen"))
1196         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1197         {
1198                 Cbuf_AddText("startmap_dm\n");
1199                 Cbuf_Execute();
1200         }
1201
1202         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1203         {
1204                 Cbuf_AddText("togglemenu\n");
1205                 Cbuf_Execute();
1206         }
1207
1208         Con_DPrint("========Initialized=========\n");
1209
1210         //Host_StartVideo();
1211 }
1212
1213
1214 /*
1215 ===============
1216 Host_Shutdown
1217
1218 FIXME: this is a callback from Sys_Quit and Sys_Error.  It would be better
1219 to run quit through here before the final handoff to the sys code.
1220 ===============
1221 */
1222 void Host_Shutdown(void)
1223 {
1224         static qboolean isdown = false;
1225
1226         if (isdown)
1227         {
1228                 Con_Print("recursive shutdown\n");
1229                 return;
1230         }
1231         if (setjmp(host_abortframe))
1232         {
1233                 Con_Print("aborted the quitting frame?!?\n");
1234                 return;
1235         }
1236         isdown = true;
1237
1238         // be quiet while shutting down
1239         S_StopAllSounds();
1240
1241         // disconnect client from server if active
1242         CL_Disconnect();
1243
1244         // shut down local server if active
1245         Host_ShutdownServer ();
1246
1247         // Shutdown menu
1248         if(MR_Shutdown)
1249                 MR_Shutdown();
1250
1251         // AK shutdown PRVM
1252         // AK hmm, no PRVM_Shutdown(); yet
1253
1254         CL_Gecko_Shutdown();
1255         CL_Video_Shutdown();
1256
1257         Host_SaveConfig();
1258
1259         CDAudio_Shutdown ();
1260         S_Terminate ();
1261         Curl_Shutdown ();
1262         NetConn_Shutdown ();
1263         //PR_Shutdown ();
1264
1265         if (cls.state != ca_dedicated)
1266         {
1267                 R_Modules_Shutdown();
1268                 VID_Shutdown();
1269         }
1270
1271         Cmd_Shutdown();
1272         Key_Shutdown();
1273         CL_Shutdown();
1274         Sys_Shutdown();
1275         Log_Close();
1276         FS_Shutdown();
1277         Con_Shutdown();
1278         Memory_Shutdown();
1279 }
1280