Store the data pointer and free it on Font_UnloadFont
[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 #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 host_maxwait = {0, "host_maxwait","1000", "maximum sleep time requested from the operating system in millisecond. Larger sleeps will be done using multiple host_maxwait length sleeps. Lowering this value will increase CPU load, but may help working around problems with accuracy of sleep times."};
65 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"};
66 cvar_t cl_minfps_fade = {CVAR_SAVE, "cl_minfps_fade", "0.2", "how fast the quality adapts to varying framerate"};
67 cvar_t cl_minfps_qualitymax = {CVAR_SAVE, "cl_minfps_qualitymax", "1", "highest allowed drawdistance multiplier"};
68 cvar_t cl_minfps_qualitymin = {CVAR_SAVE, "cl_minfps_qualitymin", "0.25", "lowest allowed drawdistance multiplier"};
69 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"};
70 cvar_t cl_minfps_qualityscale = {CVAR_SAVE, "cl_minfps_qualityscale", "0.5", "multiplier for quality"};
71 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)"};
72 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"};
73 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"};
74
75 cvar_t developer = {CVAR_SAVE, "developer","0", "shows debugging messages and information (recommended for all developers and level designers); the value -1 also suppresses buffering and logging these messages"};
76 cvar_t developer_extra = {0, "developer_extra", "0", "prints additional debugging messages, often very verbose!"};
77 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!"};
78 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)"};
79 cvar_t developer_loading = {0, "developer_loading","0", "prints information about files as they are loaded or unloaded successfully"};
80 cvar_t developer_entityparsing = {0, "developer_entityparsing", "0", "prints detailed network entities information each time a packet is received"};
81
82 cvar_t timestamps = {CVAR_SAVE, "timestamps", "0", "prints timestamps on console messages"};
83 cvar_t timeformat = {CVAR_SAVE, "timeformat", "[%Y-%m-%d %H:%M:%S] ", "time format to use on timestamped console messages"};
84
85 /*
86 ================
87 Host_AbortCurrentFrame
88
89 aborts the current host frame and goes on with the next one
90 ================
91 */
92 void Host_AbortCurrentFrame(void)
93 {
94         longjmp (host_abortframe, 1);
95 }
96
97 /*
98 ================
99 Host_Error
100
101 This shuts down both the client and server
102 ================
103 */
104 void Host_Error (const char *error, ...)
105 {
106         static char hosterrorstring1[MAX_INPUTLINE];
107         static char hosterrorstring2[MAX_INPUTLINE];
108         static qboolean hosterror = false;
109         va_list argptr;
110
111         // turn off rcon redirect if it was active when the crash occurred
112         // to prevent loops when it is a networking problem
113         Con_Rcon_Redirect_Abort();
114
115         va_start (argptr,error);
116         dpvsnprintf (hosterrorstring1,sizeof(hosterrorstring1),error,argptr);
117         va_end (argptr);
118
119         Con_Printf("Host_Error: %s\n", hosterrorstring1);
120
121         // LordHavoc: if crashing very early, or currently shutting down, do
122         // Sys_Error instead
123         if (host_framecount < 3 || host_shuttingdown)
124                 Sys_Error ("Host_Error: %s", hosterrorstring1);
125
126         if (hosterror)
127                 Sys_Error ("Host_Error: recursively entered (original error was: %s    new error is: %s)", hosterrorstring2, hosterrorstring1);
128         hosterror = true;
129
130         strlcpy(hosterrorstring2, hosterrorstring1, sizeof(hosterrorstring2));
131
132         CL_Parse_DumpPacket();
133
134         CL_Parse_ErrorCleanUp();
135
136         //PR_Crash();
137
138         // print out where the crash happened, if it was caused by QC (and do a cleanup)
139         PRVM_Crash();
140
141
142         Host_ShutdownServer ();
143
144         if (cls.state == ca_dedicated)
145                 Sys_Error ("Host_Error: %s",hosterrorstring2);  // dedicated servers exit
146
147         CL_Disconnect ();
148         cls.demonum = -1;
149
150         hosterror = false;
151
152         Host_AbortCurrentFrame();
153 }
154
155 void Host_ServerOptions (void)
156 {
157         int i;
158
159         // general default
160         svs.maxclients = 8;
161
162 // COMMANDLINEOPTION: Server: -dedicated [playerlimit] starts a dedicated server (with a command console), default playerlimit is 8
163 // COMMANDLINEOPTION: Server: -listen [playerlimit] starts a multiplayer server with graphical client, like singleplayer but other players can connect, default playerlimit is 8
164         // if no client is in the executable or -dedicated is specified on
165         // commandline, start a dedicated server
166         i = COM_CheckParm ("-dedicated");
167         if (i || !cl_available)
168         {
169                 cls.state = ca_dedicated;
170                 // check for -dedicated specifying how many players
171                 if (i && i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
172                         svs.maxclients = atoi (com_argv[i+1]);
173                 if (COM_CheckParm ("-listen"))
174                         Con_Printf ("Only one of -dedicated or -listen can be specified\n");
175                 // default sv_public on for dedicated servers (often hosted by serious administrators), off for listen servers (often hosted by clueless users)
176                 Cvar_SetValue("sv_public", 1);
177         }
178         else if (cl_available)
179         {
180                 // client exists and not dedicated, check if -listen is specified
181                 cls.state = ca_disconnected;
182                 i = COM_CheckParm ("-listen");
183                 if (i)
184                 {
185                         // default players unless specified
186                         if (i + 1 < com_argc && atoi (com_argv[i+1]) >= 1)
187                                 svs.maxclients = atoi (com_argv[i+1]);
188                 }
189                 else
190                 {
191                         // default players in some games, singleplayer in most
192                         if (gamemode != GAME_GOODVSBAD2 && gamemode != GAME_NEXUIZ && gamemode != GAME_XONOTIC && gamemode != GAME_BATTLEMECH)
193                                 svs.maxclients = 1;
194                 }
195         }
196
197         svs.maxclients = svs.maxclients_next = bound(1, svs.maxclients, MAX_SCOREBOARD);
198
199         svs.clients = (client_t *)Mem_Alloc(sv_mempool, sizeof(client_t) * svs.maxclients);
200
201         if (svs.maxclients > 1 && !deathmatch.integer && !coop.integer)
202                 Cvar_SetValueQuick(&deathmatch, 1);
203 }
204
205 /*
206 =======================
207 Host_InitLocal
208 ======================
209 */
210 void Host_SaveConfig_f(void);
211 void Host_LoadConfig_f(void);
212 extern cvar_t sv_writepicture_quality;
213 extern cvar_t r_texture_jpeg_fastpicmip;
214 static void Host_InitLocal (void)
215 {
216         Cmd_AddCommand("saveconfig", Host_SaveConfig_f, "save settings to config.cfg (or a specified filename) immediately (also automatic when quitting)");
217         Cmd_AddCommand("loadconfig", Host_LoadConfig_f, "reset everything and reload configs");
218
219         Cvar_RegisterVariable (&host_framerate);
220         Cvar_RegisterVariable (&host_speeds);
221         Cvar_RegisterVariable (&host_maxwait);
222         Cvar_RegisterVariable (&cl_minfps);
223         Cvar_RegisterVariable (&cl_minfps_fade);
224         Cvar_RegisterVariable (&cl_minfps_qualitymax);
225         Cvar_RegisterVariable (&cl_minfps_qualitymin);
226         Cvar_RegisterVariable (&cl_minfps_qualitypower);
227         Cvar_RegisterVariable (&cl_minfps_qualityscale);
228         Cvar_RegisterVariable (&cl_maxfps);
229         Cvar_RegisterVariable (&cl_maxfps_alwayssleep);
230         Cvar_RegisterVariable (&cl_maxidlefps);
231
232         Cvar_RegisterVariable (&developer);
233         Cvar_RegisterVariable (&developer_extra);
234         Cvar_RegisterVariable (&developer_insane);
235         Cvar_RegisterVariable (&developer_loadfile);
236         Cvar_RegisterVariable (&developer_loading);
237         Cvar_RegisterVariable (&developer_entityparsing);
238
239         Cvar_RegisterVariable (&timestamps);
240         Cvar_RegisterVariable (&timeformat);
241
242         Cvar_RegisterVariable (&sv_writepicture_quality);
243         Cvar_RegisterVariable (&r_texture_jpeg_fastpicmip);
244 }
245
246
247 /*
248 ===============
249 Host_SaveConfig_f
250
251 Writes key bindings and archived cvars to config.cfg
252 ===============
253 */
254 void Host_SaveConfig_to(const char *file)
255 {
256         qfile_t *f;
257
258 // dedicated servers initialize the host but don't parse and set the
259 // config.cfg cvars
260         // LordHavoc: don't save a config if it crashed in startup
261         if (host_framecount >= 3 && cls.state != ca_dedicated && !COM_CheckParm("-benchmark") && !COM_CheckParm("-capturedemo"))
262         {
263                 f = FS_OpenRealFile(file, "wb", false);
264                 if (!f)
265                 {
266                         Con_Printf("Couldn't write %s.\n", file);
267                         return;
268                 }
269
270                 Key_WriteBindings (f);
271                 Cvar_WriteVariables (f);
272
273                 FS_Close (f);
274         }
275 }
276 void Host_SaveConfig(void)
277 {
278         Host_SaveConfig_to(CONFIGFILENAME);
279 }
280 void Host_SaveConfig_f(void)
281 {
282         const char *file = CONFIGFILENAME;
283
284         if(Cmd_Argc() >= 2) {
285                 file = Cmd_Argv(1);
286                 Con_Printf("Saving to %s\n", file);
287         }
288
289         Host_SaveConfig_to(file);
290 }
291
292 /*
293 ===============
294 Host_LoadConfig_f
295
296 Resets key bindings and cvars to defaults and then reloads scripts
297 ===============
298 */
299 void Host_LoadConfig_f(void)
300 {
301         // unlock the cvar default strings so they can be updated by the new default.cfg
302         Cvar_UnlockDefaults();
303         // reset cvars to their defaults, and then exec startup scripts again
304         Cbuf_InsertText("cvar_resettodefaults_all;exec " STARTCONFIGFILENAME "\n");
305 }
306
307 /*
308 =================
309 SV_ClientPrint
310
311 Sends text across to be displayed
312 FIXME: make this just a stuffed echo?
313 =================
314 */
315 void SV_ClientPrint(const char *msg)
316 {
317         if (host_client->netconnection)
318         {
319                 MSG_WriteByte(&host_client->netconnection->message, svc_print);
320                 MSG_WriteString(&host_client->netconnection->message, msg);
321         }
322 }
323
324 /*
325 =================
326 SV_ClientPrintf
327
328 Sends text across to be displayed
329 FIXME: make this just a stuffed echo?
330 =================
331 */
332 void SV_ClientPrintf(const char *fmt, ...)
333 {
334         va_list argptr;
335         char msg[MAX_INPUTLINE];
336
337         va_start(argptr,fmt);
338         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
339         va_end(argptr);
340
341         SV_ClientPrint(msg);
342 }
343
344 /*
345 =================
346 SV_BroadcastPrint
347
348 Sends text to all active clients
349 =================
350 */
351 void SV_BroadcastPrint(const char *msg)
352 {
353         int i;
354         client_t *client;
355
356         for (i = 0, client = svs.clients;i < svs.maxclients;i++, client++)
357         {
358                 if (client->active && client->netconnection)
359                 {
360                         MSG_WriteByte(&client->netconnection->message, svc_print);
361                         MSG_WriteString(&client->netconnection->message, msg);
362                 }
363         }
364
365         if (sv_echobprint.integer && cls.state == ca_dedicated)
366                 Con_Print(msg);
367 }
368
369 /*
370 =================
371 SV_BroadcastPrintf
372
373 Sends text to all active clients
374 =================
375 */
376 void SV_BroadcastPrintf(const char *fmt, ...)
377 {
378         va_list argptr;
379         char msg[MAX_INPUTLINE];
380
381         va_start(argptr,fmt);
382         dpvsnprintf(msg,sizeof(msg),fmt,argptr);
383         va_end(argptr);
384
385         SV_BroadcastPrint(msg);
386 }
387
388 /*
389 =================
390 Host_ClientCommands
391
392 Send text over to the client to be executed
393 =================
394 */
395 void Host_ClientCommands(const char *fmt, ...)
396 {
397         va_list argptr;
398         char string[MAX_INPUTLINE];
399
400         if (!host_client->netconnection)
401                 return;
402
403         va_start(argptr,fmt);
404         dpvsnprintf(string, sizeof(string), fmt, argptr);
405         va_end(argptr);
406
407         MSG_WriteByte(&host_client->netconnection->message, svc_stufftext);
408         MSG_WriteString(&host_client->netconnection->message, string);
409 }
410
411 /*
412 =====================
413 SV_DropClient
414
415 Called when the player is getting totally kicked off the host
416 if (crash = true), don't bother sending signofs
417 =====================
418 */
419 void SV_DropClient(qboolean crash)
420 {
421         int i;
422         Con_Printf("Client \"%s\" dropped\n", host_client->name);
423
424         SV_StopDemoRecording(host_client);
425
426         // make sure edict is not corrupt (from a level change for example)
427         host_client->edict = PRVM_EDICT_NUM(host_client - svs.clients + 1);
428
429         if (host_client->netconnection)
430         {
431                 // free the client (the body stays around)
432                 if (!crash)
433                 {
434                         // LordHavoc: no opportunity for resending, so use unreliable 3 times
435                         unsigned char bufdata[8];
436                         sizebuf_t buf;
437                         memset(&buf, 0, sizeof(buf));
438                         buf.data = bufdata;
439                         buf.maxsize = sizeof(bufdata);
440                         MSG_WriteByte(&buf, svc_disconnect);
441                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
442                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
443                         NetConn_SendUnreliableMessage(host_client->netconnection, &buf, sv.protocol, 10000, false);
444                 }
445                 // break the net connection
446                 NetConn_Close(host_client->netconnection);
447                 host_client->netconnection = NULL;
448         }
449
450         // call qc ClientDisconnect function
451         // LordHavoc: don't call QC if server is dead (avoids recursive
452         // Host_Error in some mods when they run out of edicts)
453         if (host_client->clientconnectcalled && sv.active && host_client->edict)
454         {
455                 // call the prog function for removing a client
456                 // this will set the body to a dead frame, among other things
457                 int saveSelf = prog->globals.server->self;
458                 host_client->clientconnectcalled = false;
459                 prog->globals.server->self = PRVM_EDICT_TO_PROG(host_client->edict);
460                 PRVM_ExecuteProgram(prog->globals.server->ClientDisconnect, "QC function ClientDisconnect is missing");
461                 prog->globals.server->self = saveSelf;
462         }
463
464         // if a download is active, close it
465         if (host_client->download_file)
466         {
467                 Con_DPrintf("Download of %s aborted when %s dropped\n", host_client->download_name, host_client->name);
468                 FS_Close(host_client->download_file);
469                 host_client->download_file = NULL;
470                 host_client->download_name[0] = 0;
471                 host_client->download_expectedposition = 0;
472                 host_client->download_started = false;
473         }
474
475         // remove leaving player from scoreboard
476         host_client->name[0] = 0;
477         host_client->colors = 0;
478         host_client->frags = 0;
479         // send notification to all clients
480         // get number of client manually just to make sure we get it right...
481         i = host_client - svs.clients;
482         MSG_WriteByte (&sv.reliable_datagram, svc_updatename);
483         MSG_WriteByte (&sv.reliable_datagram, i);
484         MSG_WriteString (&sv.reliable_datagram, host_client->name);
485         MSG_WriteByte (&sv.reliable_datagram, svc_updatecolors);
486         MSG_WriteByte (&sv.reliable_datagram, i);
487         MSG_WriteByte (&sv.reliable_datagram, host_client->colors);
488         MSG_WriteByte (&sv.reliable_datagram, svc_updatefrags);
489         MSG_WriteByte (&sv.reliable_datagram, i);
490         MSG_WriteShort (&sv.reliable_datagram, host_client->frags);
491
492         // free the client now
493         if (host_client->entitydatabase)
494                 EntityFrame_FreeDatabase(host_client->entitydatabase);
495         if (host_client->entitydatabase4)
496                 EntityFrame4_FreeDatabase(host_client->entitydatabase4);
497         if (host_client->entitydatabase5)
498                 EntityFrame5_FreeDatabase(host_client->entitydatabase5);
499
500         if (sv.active)
501         {
502                 // clear a fields that matter to DP_SV_CLIENTNAME and DP_SV_CLIENTCOLORS, and also frags
503                 PRVM_ED_ClearEdict(host_client->edict);
504         }
505
506         // clear the client struct (this sets active to false)
507         memset(host_client, 0, sizeof(*host_client));
508
509         // update server listing on the master because player count changed
510         // (which the master uses for filtering empty/full servers)
511         NetConn_Heartbeat(1);
512
513         if (sv.loadgame)
514         {
515                 for (i = 0;i < svs.maxclients;i++)
516                         if (svs.clients[i].active && !svs.clients[i].spawned)
517                                 break;
518                 if (i == svs.maxclients)
519                 {
520                         Con_Printf("Loaded game, everyone rejoined - unpausing\n");
521                         sv.paused = sv.loadgame = false; // we're basically done with loading now
522                 }
523         }
524 }
525
526 /*
527 ==================
528 Host_ShutdownServer
529
530 This only happens at the end of a game, not between levels
531 ==================
532 */
533 void Host_ShutdownServer(void)
534 {
535         int i;
536
537         Con_DPrintf("Host_ShutdownServer\n");
538
539         if (!sv.active)
540                 return;
541
542         NetConn_Heartbeat(2);
543         NetConn_Heartbeat(2);
544
545 // make sure all the clients know we're disconnecting
546         SV_VM_Begin();
547         World_End(&sv.world);
548         if(prog->loaded)
549                 if(prog->funcoffsets.SV_Shutdown)
550                 {
551                         func_t s = prog->funcoffsets.SV_Shutdown;
552                         prog->funcoffsets.SV_Shutdown = 0; // prevent it from getting called again
553                         PRVM_ExecuteProgram(s,"SV_Shutdown() required");
554                 }
555         for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
556                 if (host_client->active)
557                         SV_DropClient(false); // server shutdown
558         SV_VM_End();
559
560         NetConn_CloseServerPorts();
561
562         sv.active = false;
563 //
564 // clear structures
565 //
566         memset(&sv, 0, sizeof(sv));
567         memset(svs.clients, 0, svs.maxclients*sizeof(client_t));
568 }
569
570
571 //============================================================================
572
573 /*
574 ===================
575 Host_GetConsoleCommands
576
577 Add them exactly as if they had been typed at the console
578 ===================
579 */
580 void Host_GetConsoleCommands (void)
581 {
582         char *cmd;
583
584         while (1)
585         {
586                 cmd = Sys_ConsoleInput ();
587                 if (!cmd)
588                         break;
589                 Cbuf_AddText (cmd);
590         }
591 }
592
593 /*
594 ==================
595 Host_TimeReport
596
597 Returns a time report string, for example for
598 ==================
599 */
600 const char *Host_TimingReport(void)
601 {
602         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);
603 }
604
605 /*
606 ==================
607 Host_Frame
608
609 Runs all active servers
610 ==================
611 */
612 static void Host_Init(void);
613 void Host_Main(void)
614 {
615         double time1 = 0;
616         double time2 = 0;
617         double time3 = 0;
618         double cl_timer, sv_timer;
619         double clframetime, deltarealtime, oldrealtime;
620         double wait;
621         int pass1, pass2, pass3, i;
622
623         Host_Init();
624
625         cl_timer = 0;
626         sv_timer = 0;
627
628         realtime = host_starttime = Sys_DoubleTime();
629         for (;;)
630         {
631                 if (setjmp(host_abortframe))
632                 {
633                         SCR_ClearLoadingScreen(false);
634                         continue;                       // something bad happened, or the server disconnected
635                 }
636
637                 oldrealtime = realtime;
638                 realtime = Sys_DoubleTime();
639
640                 deltarealtime = realtime - oldrealtime;
641                 cl_timer += deltarealtime;
642                 sv_timer += deltarealtime;
643
644                 svs.perf_acc_realtime += deltarealtime;
645
646                 // Look for clients who have spawned
647                 for (i = 0, host_client = svs.clients;i < svs.maxclients;i++, host_client++)
648                         if(host_client->spawned)
649                                 if(host_client->netconnection)
650                                         break;
651                 if(i == svs.maxclients)
652                 {
653                         // Nobody is looking? Then we won't do timing...
654                         // Instead, reset it to zero
655                         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;
656                 }
657                 else if(svs.perf_acc_realtime > 5)
658                 {
659                         svs.perf_cpuload = 1 - svs.perf_acc_sleeptime / svs.perf_acc_realtime;
660                         svs.perf_lost = svs.perf_acc_lost / svs.perf_acc_realtime;
661                         if(svs.perf_acc_offset_samples > 0)
662                         {
663                                 svs.perf_offset_max = svs.perf_acc_offset_max;
664                                 svs.perf_offset_avg = svs.perf_acc_offset / svs.perf_acc_offset_samples;
665                                 svs.perf_offset_sdev = sqrt(svs.perf_acc_offset_squared / svs.perf_acc_offset_samples - svs.perf_offset_avg * svs.perf_offset_avg);
666                         }
667                         if(svs.perf_lost > 0 && developer_extra.integer)
668                                 Con_DPrintf("Server can't keep up: %s\n", Host_TimingReport());
669                         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;
670                 }
671
672                 if (slowmo.value < 0.00001 && slowmo.value != 0)
673                         Cvar_SetValue("slowmo", 0);
674                 if (host_framerate.value < 0.00001 && host_framerate.value != 0)
675                         Cvar_SetValue("host_framerate", 0);
676
677                 // keep the random time dependent, but not when playing demos/benchmarking
678                 if(!*sv_random_seed.string && !cls.demoplayback)
679                         rand();
680
681                 cl.islocalgame = NetConn_IsLocalGame();
682
683                 // get new key events
684                 Key_EventQueue_Unblock();
685                 SndSys_SendKeyEvents();
686                 Sys_SendKeyEvents();
687
688                 NetConn_UpdateSockets();
689
690                 Log_DestBuffer_Flush();
691
692                 // receive packets on each main loop iteration, as the main loop may
693                 // be undersleeping due to select() detecting a new packet
694                 if (sv.active)
695                         NetConn_ServerFrame();
696
697                 Curl_Run();
698
699                 // check for commands typed to the host
700                 Host_GetConsoleCommands();
701
702                 // when a server is running we only execute console commands on server frames
703                 // (this mainly allows frikbot .way config files to work properly by staying in sync with the server qc)
704                 // otherwise we execute them on client frames
705                 if (sv.active ? sv_timer > 0 : cl_timer > 0)
706                 {
707                         // process console commands
708 //                      R_TimeReport("preconsole");
709                         CL_VM_PreventInformationLeaks();
710                         Cbuf_Execute();
711 //                      R_TimeReport("console");
712                 }
713
714                 //Con_Printf("%6.0f %6.0f\n", cl_timer * 1000000.0, sv_timer * 1000000.0);
715
716                 // if the accumulators haven't become positive yet, wait a while
717                 if (cls.state == ca_dedicated)
718                         wait = sv_timer * -1000000.0;
719                 else if (!sv.active)
720                         wait = cl_timer * -1000000.0;
721                 else
722                         wait = max(cl_timer, sv_timer) * -1000000.0;
723
724                 if (!cls.timedemo && wait >= 1)
725                 {
726                         double time0;
727
728                         if(host_maxwait.value <= 0)
729                                 wait = min(wait, 1000000.0);
730                         else
731                                 wait = min(wait, host_maxwait.value * 1000.0);
732                         if(wait < 1)
733                                 wait = 1; // because we cast to int
734
735                         time0 = Sys_DoubleTime();
736                         if (sv_checkforpacketsduringsleep.integer && !sys_usenoclockbutbenchmark.integer)
737                                 NetConn_SleepMicroseconds((int)wait);
738                         else
739                                 Sys_Sleep((int)wait);
740                         svs.perf_acc_sleeptime += Sys_DoubleTime() - time0;
741 //                      R_TimeReport("sleep");
742                         continue;
743                 }
744
745                 R_TimeReport("---");
746
747         //-------------------
748         //
749         // server operations
750         //
751         //-------------------
752
753                 // limit the frametime steps to no more than 100ms each
754                 if (cl_timer > 0.1)
755                         cl_timer = 0.1;
756                 if (sv_timer > 0.1)
757                 {
758                         svs.perf_acc_lost += (sv_timer - 0.1);
759                         sv_timer = 0.1;
760                 }
761
762                 if (sv.active && sv_timer > 0)
763                 {
764                         // execute one or more server frames, with an upper limit on how much
765                         // execution time to spend on server frames to avoid freezing the game if
766                         // the server is overloaded, this execution time limit means the game will
767                         // slow down if the server is taking too long.
768                         int framecount, framelimit = 1;
769                         double advancetime, aborttime = 0;
770                         float offset;
771
772                         // run the world state
773                         // don't allow simulation to run too fast or too slow or logic glitches can occur
774
775                         // stop running server frames if the wall time reaches this value
776                         if (sys_ticrate.value <= 0)
777                                 advancetime = sv_timer;
778                         else if (cl.islocalgame && !sv_fixedframeratesingleplayer.integer)
779                         {
780                                 // synchronize to the client frametime, but no less than 10ms and no more than sys_ticrate
781                                 advancetime = bound(0.01, cl_timer, sys_ticrate.value);
782                                 framelimit = 10;
783                                 aborttime = realtime + 0.1;
784                         }
785                         else
786                         {
787                                 advancetime = sys_ticrate.value;
788                                 // listen servers can run multiple server frames per client frame
789                                 if (cls.state == ca_connected)
790                                 {
791                                         framelimit = 10;
792                                         aborttime = realtime + 0.1;
793                                 }
794                         }
795                         if(slowmo.value > 0 && slowmo.value < 1)
796                                 advancetime = min(advancetime, 0.1 / slowmo.value);
797                         else
798                                 advancetime = min(advancetime, 0.1);
799
800                         if(advancetime > 0)
801                         {
802                                 offset = sv_timer + (Sys_DoubleTime() - realtime);
803                                 ++svs.perf_acc_offset_samples;
804                                 svs.perf_acc_offset += offset;
805                                 svs.perf_acc_offset_squared += offset * offset;
806                                 if(svs.perf_acc_offset_max < offset)
807                                         svs.perf_acc_offset_max = offset;
808                         }
809
810                         // only advance time if not paused
811                         // the game also pauses in singleplayer when menu or console is used
812                         sv.frametime = advancetime * slowmo.value;
813                         if (host_framerate.value)
814                                 sv.frametime = host_framerate.value;
815                         if (sv.paused || (cl.islocalgame && (key_dest != key_game || key_consoleactive || cl.csqc_paused)))
816                                 sv.frametime = 0;
817
818                         // setup the VM frame
819                         SV_VM_Begin();
820
821                         for (framecount = 0;framecount < framelimit && sv_timer > 0;framecount++)
822                         {
823                                 sv_timer -= advancetime;
824
825                                 // move things around and think unless paused
826                                 if (sv.frametime)
827                                         SV_Physics();
828
829                                 // if this server frame took too long, break out of the loop
830                                 if (framelimit > 1 && Sys_DoubleTime() >= aborttime)
831                                         break;
832                         }
833                         R_TimeReport("serverphysics");
834
835                         // send all messages to the clients
836                         SV_SendClientMessages();
837                         
838                         if (sv.paused == 1 && realtime > sv.pausedstart && sv.pausedstart > 0) {
839                                 prog->globals.generic[OFS_PARM0] = realtime - sv.pausedstart;
840                                 PRVM_ExecuteProgram(prog->funcoffsets.SV_PausedTic, "QC function SV_PausedTic is missing");
841                         }
842
843                         // end the server VM frame
844                         SV_VM_End();
845
846                         // send an heartbeat if enough time has passed since the last one
847                         NetConn_Heartbeat(0);
848                         R_TimeReport("servernetwork");
849                 }
850                 else
851                 {
852                         // don't let r_speeds display jump around
853                         R_TimeReport("serverphysics");
854                         R_TimeReport("servernetwork");
855                 }
856
857         //-------------------
858         //
859         // client operations
860         //
861         //-------------------
862
863                 if (cls.state != ca_dedicated && (cl_timer > 0 || cls.timedemo || ((vid_activewindow ? cl_maxfps : cl_maxidlefps).value < 1)))
864                 {
865                         R_TimeReport("---");
866                         // decide the simulation time
867                         if (cls.capturevideo.active)
868                         {
869                                 //***
870                                 if (cls.capturevideo.realtime)
871                                         clframetime = cl.realframetime = max(cl_timer, 1.0 / cls.capturevideo.framerate);
872                                 else
873                                 {
874                                         clframetime = 1.0 / cls.capturevideo.framerate;
875                                         cl.realframetime = max(cl_timer, clframetime);
876                                 }
877                         }
878                         else if (vid_activewindow && cl_maxfps.value >= 1 && !cls.timedemo)
879                         {
880                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / cl_maxfps.value);
881                                 // when running slow, we need to sleep to keep input responsive
882                                 wait = bound(0, cl_maxfps_alwayssleep.value * 1000, 100000);
883                                 if (wait > 0)
884                                         Sys_Sleep((int)wait);
885                         }
886                         else if (!vid_activewindow && cl_maxidlefps.value >= 1 && !cls.timedemo)
887                                 clframetime = cl.realframetime = max(cl_timer, 1.0 / cl_maxidlefps.value);
888                         else
889                                 clframetime = cl.realframetime = cl_timer;
890
891                         // apply slowmo scaling
892                         clframetime *= cl.movevars_timescale;
893                         // scale playback speed of demos by slowmo cvar
894                         if (cls.demoplayback)
895                         {
896                                 clframetime *= slowmo.value;
897                                 // if demo playback is paused, don't advance time at all
898                                 if (cls.demopaused)
899                                         clframetime = 0;
900                         }
901
902                         // host_framerate overrides all else
903                         if (host_framerate.value)
904                                 clframetime = host_framerate.value;
905
906                         if (cl.paused || (cl.islocalgame && (key_dest != key_game || key_consoleactive || cl.csqc_paused)))
907                                 clframetime = 0;
908
909                         if (cls.timedemo)
910                                 clframetime = cl.realframetime = cl_timer;
911
912                         // deduct the frame time from the accumulator
913                         cl_timer -= cl.realframetime;
914
915                         cl.oldtime = cl.time;
916                         cl.time += clframetime;
917
918                         // update video
919                         if (host_speeds.integer)
920                                 time1 = Sys_DoubleTime();
921                         R_TimeReport("pre-input");
922
923                         // Collect input into cmd
924                         CL_Input();
925
926                         R_TimeReport("input");
927
928                         // check for new packets
929                         NetConn_ClientFrame();
930
931                         // read a new frame from a demo if needed
932                         CL_ReadDemoMessage();
933                         R_TimeReport("clientnetwork");
934
935                         // now that packets have been read, send input to server
936                         CL_SendMove();
937                         R_TimeReport("sendmove");
938
939                         // update client world (interpolate entities, create trails, etc)
940                         CL_UpdateWorld();
941                         R_TimeReport("lerpworld");
942
943                         CL_Video_Frame();
944                         CL_Gecko_Frame();
945
946                         R_TimeReport("client");
947
948                         CL_UpdateScreen();
949                         R_TimeReport("render");
950
951                         if (host_speeds.integer)
952                                 time2 = Sys_DoubleTime();
953
954                         // update audio
955                         if(cl.csqc_usecsqclistener)
956                         {
957                                 S_Update(&cl.csqc_listenermatrix);
958                                 cl.csqc_usecsqclistener = false;
959                         }
960                         else
961                                 S_Update(&r_refdef.view.matrix);
962
963                         CDAudio_Update();
964                         R_TimeReport("audio");
965
966                         // reset gathering of mouse input
967                         in_mouse_x = in_mouse_y = 0;
968
969                         if (host_speeds.integer)
970                         {
971                                 pass1 = (int)((time1 - time3)*1000000);
972                                 time3 = Sys_DoubleTime();
973                                 pass2 = (int)((time2 - time1)*1000000);
974                                 pass3 = (int)((time3 - time2)*1000000);
975                                 Con_Printf("%6ius total %6ius server %6ius gfx %6ius snd\n",
976                                                         pass1+pass2+pass3, pass1, pass2, pass3);
977                         }
978                 }
979
980 #if MEMPARANOIA
981                 Mem_CheckSentinelsGlobal();
982 #else
983                 if (developer_memorydebug.integer)
984                         Mem_CheckSentinelsGlobal();
985 #endif
986
987                 // if there is some time remaining from this frame, reset the timers
988                 if (cl_timer >= 0)
989                         cl_timer = 0;
990                 if (sv_timer >= 0)
991                 {
992                         svs.perf_acc_lost += sv_timer;
993                         sv_timer = 0;
994                 }
995
996                 host_framecount++;
997         }
998 }
999
1000 //============================================================================
1001
1002 qboolean vid_opened = false;
1003 void Host_StartVideo(void)
1004 {
1005         if (!vid_opened && cls.state != ca_dedicated)
1006         {
1007                 vid_opened = true;
1008                 // make sure we open sockets before opening video because the Windows Firewall "unblock?" dialog can screw up the graphics context on some graphics drivers
1009                 NetConn_UpdateSockets();
1010                 VID_Start();
1011                 CDAudio_Startup();
1012         }
1013 }
1014
1015 char engineversion[128];
1016
1017 qboolean sys_nostdout = false;
1018
1019 extern void u8_Init(void);
1020 extern void Render_Init(void);
1021 extern void Mathlib_Init(void);
1022 extern void FS_Init_SelfPack(void);
1023 extern void FS_Init(void);
1024 extern void FS_Shutdown(void);
1025 extern void PR_Cmd_Init(void);
1026 extern void COM_Init_Commands(void);
1027 extern void FS_Init_Commands(void);
1028 extern qboolean host_stuffcmdsrun;
1029
1030 /*
1031 ====================
1032 Host_Init
1033 ====================
1034 */
1035 static void Host_Init (void)
1036 {
1037         int i;
1038         const char* os;
1039
1040         if (COM_CheckParm("-profilegameonly"))
1041                 Sys_AllowProfiling(false);
1042
1043         // LordHavoc: quake never seeded the random number generator before... heh
1044         if (COM_CheckParm("-benchmark"))
1045                 srand(0); // predictable random sequence for -benchmark
1046         else
1047                 srand((unsigned int)time(NULL));
1048
1049         // FIXME: this is evil, but possibly temporary
1050         // LordHavoc: doesn't seem very temporary...
1051         // LordHavoc: made this a saved cvar
1052 // COMMANDLINEOPTION: Console: -developer enables warnings and other notices (RECOMMENDED for mod developers)
1053         if (COM_CheckParm("-developer"))
1054         {
1055                 developer.value = developer.integer = 1;
1056                 developer.string = "1";
1057         }
1058
1059         if (COM_CheckParm("-developer2"))
1060         {
1061                 developer.value = developer.integer = 1;
1062                 developer.string = "1";
1063                 developer_extra.value = developer_extra.integer = 1;
1064                 developer_extra.string = "1";
1065                 developer_insane.value = developer_insane.integer = 1;
1066                 developer_insane.string = "1";
1067                 developer_memory.value = developer_memory.integer = 1;
1068                 developer_memory.string = "1";
1069                 developer_memorydebug.value = developer_memorydebug.integer = 1;
1070                 developer_memorydebug.string = "1";
1071         }
1072
1073 // COMMANDLINEOPTION: Console: -nostdout disables text output to the terminal the game was launched from
1074         if (COM_CheckParm("-nostdout"))
1075                 sys_nostdout = 1;
1076
1077         // used by everything
1078         Memory_Init();
1079
1080         // initialize console command/cvar/alias/command execution systems
1081         Cmd_Init();
1082
1083         // initialize memory subsystem cvars/commands
1084         Memory_Init_Commands();
1085
1086         // initialize console and logging and its cvars/commands
1087         Con_Init();
1088
1089         // initialize various cvars that could not be initialized earlier
1090         u8_Init();
1091         Curl_Init_Commands();
1092         Cmd_Init_Commands();
1093         Sys_Init_Commands();
1094         COM_Init_Commands();
1095         FS_Init_Commands();
1096
1097         // initialize console window (only used by sys_win.c)
1098         Sys_InitConsole();
1099
1100         // initialize the self-pack (must be before COM_InitGameType as it may add command line options)
1101         FS_Init_SelfPack();
1102
1103         // detect gamemode from commandline options or executable name
1104         COM_InitGameType();
1105
1106         // construct a version string for the corner of the console
1107         os = DP_OS_NAME;
1108         dpsnprintf (engineversion, sizeof (engineversion), "%s %s %s", gamename, os, buildstring);
1109         Con_Printf("%s\n", engineversion);
1110
1111         // initialize ixtable
1112         Mathlib_Init();
1113
1114         // initialize filesystem (including fs_basedir, fs_gamedir, -game, scr_screenshot_name)
1115         FS_Init();
1116
1117         // must be after FS_Init
1118         Crypto_Init();
1119         Crypto_Init_Commands();
1120
1121         NetConn_Init();
1122         Curl_Init();
1123         //PR_Init();
1124         //PR_Cmd_Init();
1125         PRVM_Init();
1126         Mod_Init();
1127         World_Init();
1128         SV_Init();
1129         V_Init(); // some cvars needed by server player physics (cl_rollangle etc)
1130         Host_InitCommands();
1131         Host_InitLocal();
1132         Host_ServerOptions();
1133
1134         if (cls.state == ca_dedicated)
1135                 Cmd_AddCommand ("disconnect", CL_Disconnect_f, "disconnect from server (or disconnect all clients if running a server)");
1136         else
1137         {
1138                 Con_DPrintf("Initializing client\n");
1139
1140                 R_Modules_Init();
1141                 Palette_Init();
1142                 MR_Init_Commands();
1143                 VID_Shared_Init();
1144                 VID_Init();
1145                 Render_Init();
1146                 S_Init();
1147                 CDAudio_Init();
1148                 Key_Init();
1149                 CL_Init();
1150         }
1151
1152         // set up the default startmap_sp and startmap_dm aliases (mods can
1153         // override these) and then execute the quake.rc startup script
1154         if (gamemode == GAME_NEHAHRA)
1155                 Cbuf_AddText("alias startmap_sp \"map nehstart\"\nalias startmap_dm \"map nehstart\"\nexec " STARTCONFIGFILENAME "\n");
1156         else if (gamemode == GAME_TRANSFUSION)
1157                 Cbuf_AddText("alias startmap_sp \"map e1m1\"\n""alias startmap_dm \"map bb1\"\nexec " STARTCONFIGFILENAME "\n");
1158         else if (gamemode == GAME_TEU)
1159                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec teu.rc\n");
1160         else
1161                 Cbuf_AddText("alias startmap_sp \"map start\"\nalias startmap_dm \"map start\"\nexec " STARTCONFIGFILENAME "\n");
1162         Cbuf_Execute();
1163
1164         // if stuffcmds wasn't run, then quake.rc is probably missing, use default
1165         if (!host_stuffcmdsrun)
1166         {
1167                 Cbuf_AddText("exec default.cfg\nexec " CONFIGFILENAME "\nexec autoexec.cfg\nstuffcmds\n");
1168                 Cbuf_Execute();
1169         }
1170
1171         // put up the loading image so the user doesn't stare at a black screen...
1172         SCR_BeginLoadingPlaque();
1173
1174         // FIXME: put this into some neat design, but the menu should be allowed to crash
1175         // without crashing the whole game, so this should just be a short-time solution
1176
1177         // here comes the not so critical stuff
1178         if (setjmp(host_abortframe)) {
1179                 return;
1180         }
1181
1182         if (cls.state != ca_dedicated)
1183         {
1184                 MR_Init();
1185         }
1186
1187         // check for special benchmark mode
1188 // 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)
1189         i = COM_CheckParm("-benchmark");
1190         if (i && i + 1 < com_argc)
1191         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1192         {
1193                 Cbuf_AddText(va("timedemo %s\n", com_argv[i + 1]));
1194                 Cbuf_Execute();
1195         }
1196
1197         // check for special demo mode
1198 // COMMANDLINEOPTION: Client: -demo <demoname> runs a playdemo and quits
1199         i = COM_CheckParm("-demo");
1200         if (i && i + 1 < com_argc)
1201         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1202         {
1203                 Cbuf_AddText(va("playdemo %s\n", com_argv[i + 1]));
1204                 Cbuf_Execute();
1205         }
1206
1207 // COMMANDLINEOPTION: Client: -capturedemo <demoname> captures a playdemo and quits
1208         i = COM_CheckParm("-capturedemo");
1209         if (i && i + 1 < com_argc)
1210         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1211         {
1212                 Cbuf_AddText(va("playdemo %s\ncl_capturevideo 1\n", com_argv[i + 1]));
1213                 Cbuf_Execute();
1214         }
1215
1216         if (cls.state == ca_dedicated || COM_CheckParm("-listen"))
1217         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1218         {
1219                 Cbuf_AddText("startmap_dm\n");
1220                 Cbuf_Execute();
1221         }
1222
1223         if (!sv.active && !cls.demoplayback && !cls.connect_trying)
1224         {
1225                 Cbuf_AddText("togglemenu\n");
1226                 Cbuf_Execute();
1227         }
1228
1229         Con_DPrint("========Initialized=========\n");
1230
1231         //Host_StartVideo();
1232 }
1233
1234
1235 /*
1236 ===============
1237 Host_Shutdown
1238
1239 FIXME: this is a callback from Sys_Quit and Sys_Error.  It would be better
1240 to run quit through here before the final handoff to the sys code.
1241 ===============
1242 */
1243 void Host_Shutdown(void)
1244 {
1245         static qboolean isdown = false;
1246
1247         if (isdown)
1248         {
1249                 Con_Print("recursive shutdown\n");
1250                 return;
1251         }
1252         if (setjmp(host_abortframe))
1253         {
1254                 Con_Print("aborted the quitting frame?!?\n");
1255                 return;
1256         }
1257         isdown = true;
1258
1259         // be quiet while shutting down
1260         S_StopAllSounds();
1261
1262         // disconnect client from server if active
1263         CL_Disconnect();
1264
1265         // shut down local server if active
1266         Host_ShutdownServer ();
1267
1268         // Shutdown menu
1269         if(MR_Shutdown)
1270                 MR_Shutdown();
1271
1272         // AK shutdown PRVM
1273         // AK hmm, no PRVM_Shutdown(); yet
1274
1275         CL_Gecko_Shutdown();
1276         CL_Video_Shutdown();
1277
1278         Host_SaveConfig();
1279
1280         CDAudio_Shutdown ();
1281         S_Terminate ();
1282         Curl_Shutdown ();
1283         NetConn_Shutdown ();
1284         //PR_Shutdown ();
1285
1286         if (cls.state != ca_dedicated)
1287         {
1288                 R_Modules_Shutdown();
1289                 VID_Shutdown();
1290         }
1291
1292         Cmd_Shutdown();
1293         Key_Shutdown();
1294         CL_Shutdown();
1295         Sys_Shutdown();
1296         Log_Close();
1297         Crypto_Shutdown();
1298         FS_Shutdown();
1299         Con_Shutdown();
1300         Memory_Shutdown();
1301 }
1302