ref: ee0395513ea7be03d7dc8aae4c0b4bfbb59c0427
dir: /host.c/
// host.c -- coordinates spawning and killing of local servers
#include <u.h>
#include <libc.h>
#include <stdio.h>
#include "quakedef.h"
/*
A server can allways be started, even if the system started out as a client
to a remote system.
A client can NOT be started if the system started as a dedicated server.
Memory is cleared / released when a server or client begins, not when they end.
*/
quakeparms_t host_parms;
qboolean host_initialized; // true if into command execution
double host_frametime;
double host_time;
double realtime; // without any filtering or bounding
double oldrealtime; // last frame run
int host_framecount;
int host_hunklevel;
int minimum_memory;
client_t *host_client; // current client
jmp_buf host_abortserver;
byte *host_basepal;
byte *host_colormap;
cvar_t host_framerate = {"host_framerate","0"}; // set for slow motion
cvar_t host_speeds = {"host_speeds","0"}; // set for running times
cvar_t sys_ticrate = {"sys_ticrate","0.05"};
cvar_t serverprofile = {"serverprofile","0"};
cvar_t fraglimit = {"fraglimit","0",false,true};
cvar_t timelimit = {"timelimit","0",false,true};
cvar_t teamplay = {"teamplay","0",false,true};
cvar_t samelevel = {"samelevel","0"};
cvar_t noexit = {"noexit","0",false,true};
cvar_t developer = {"developer","0"};
cvar_t skill = {"skill","1"}; // 0 - 3
cvar_t deathmatch = {"deathmatch","0"}; // 0, 1, or 2
cvar_t coop = {"coop","0"}; // 0 or 1
cvar_t pausable = {"pausable","1"};
cvar_t temp1 = {"temp1","0"};
/*
================
Host_EndGame
================
*/
void Host_EndGame (char *fmt, ...)
{
va_list arg;
char s[1024];
va_start(arg, fmt);
vsnprint(s, sizeof s, fmt, arg);
va_end(arg);
Con_DPrintf("Host_EndGame: %s\n", s);
if(sv.active)
Host_ShutdownServer(false);
if(cls.state == ca_dedicated)
Sys_Error("Host_EndGame: %s\n", s); // dedicated servers exit
if(cls.demonum != -1)
CL_NextDemo();
else
CL_Disconnect();
longjmp(host_abortserver, 1);
}
/*
================
Host_Error
This shuts down both the client and server
================
*/
void Host_Error (char *fmt, ...)
{
va_list arg;
char s[1024];
static qboolean inerror = false;
if(inerror)
Sys_Error("Host_Error: recursively entered");
inerror = true;
SCR_EndLoadingPlaque(); // reenable screen updates
va_start(arg, fmt);
vsnprint(s, sizeof s, fmt, arg);
va_end(arg);
Con_Printf("Host_Error: %s\n", s);
if(sv.active)
Host_ShutdownServer(false);
if(cls.state == ca_dedicated)
Sys_Error("Host_Error: %s\n", s); // dedicated servers exit
CL_Disconnect();
cls.demonum = -1;
inerror = false;
longjmp(host_abortserver, 1);
}
/*
================
Host_FindMaxClients
================
*/
void Host_FindMaxClients (void)
{
int i;
svs.maxclients = 1;
i = COM_CheckParm ("-dedicated");
if (i)
{
cls.state = ca_dedicated;
if(i != com_argc-1)
svs.maxclients = atoi(com_argv[i+1]);
else
svs.maxclients = 8;
}
else
cls.state = ca_disconnected;
i = COM_CheckParm ("-listen");
if (i)
{
if (cls.state == ca_dedicated)
Sys_Error ("Only one of -dedicated or -listen can be specified");
if (i != (com_argc - 1))
svs.maxclients = atoi(com_argv[i+1]);
else
svs.maxclients = 8;
}
if (svs.maxclients < 1)
svs.maxclients = 8;
else if (svs.maxclients > MAX_SCOREBOARD)
svs.maxclients = MAX_SCOREBOARD;
svs.maxclientslimit = svs.maxclients;
if (svs.maxclientslimit < 4)
svs.maxclientslimit = 4;
svs.clients = Hunk_AllocName(svs.maxclientslimit * sizeof *svs.clients, "clients");
if (svs.maxclients > 1)
Cvar_SetValue ("deathmatch", 1.0);
else
Cvar_SetValue ("deathmatch", 0.0);
}
/*
=======================
Host_InitLocal
======================
*/
void Host_InitLocal (void)
{
Host_InitCommands ();
Cvar_RegisterVariable (&host_framerate);
Cvar_RegisterVariable (&host_speeds);
Cvar_RegisterVariable (&sys_ticrate);
Cvar_RegisterVariable (&serverprofile);
Cvar_RegisterVariable (&fraglimit);
Cvar_RegisterVariable (&timelimit);
Cvar_RegisterVariable (&teamplay);
Cvar_RegisterVariable (&samelevel);
Cvar_RegisterVariable (&noexit);
Cvar_RegisterVariable (&skill);
Cvar_RegisterVariable (&developer);
Cvar_RegisterVariable (&deathmatch);
Cvar_RegisterVariable (&coop);
Cvar_RegisterVariable (&pausable);
Cvar_RegisterVariable (&temp1);
Host_FindMaxClients ();
host_time = 1.0; // so a think at time 0 won't get called
}
/*
===============
Host_WriteConfiguration
Writes key bindings and archived cvars to config.cfg
===============
*/
void Host_WriteConfiguration (void)
{
FILE *f;
// dedicated servers initialize the host but don't parse and set the
// config.cfg cvars
if (host_initialized & !isDedicated)
{
f = fopen (va("%s/config.cfg",com_gamedir), "w");
if (!f)
{
Con_Printf ("Couldn't write config.cfg.\n");
return;
}
Key_WriteBindings (f);
Cvar_WriteVariables (f);
fclose (f);
}
}
/*
=================
SV_ClientPrintf
Sends text across to be displayed
FIXME: make this just a stuffed echo?
=================
*/
void SV_ClientPrintf (char *fmt, ...)
{
va_list arg;
char s[1024];
va_start(arg, fmt);
vsnprint(s, sizeof s, fmt, arg);
va_end(arg);
MSG_WriteByte(&host_client->message, svc_print);
MSG_WriteString(&host_client->message, s);
}
/*
=================
SV_BroadcastPrintf
Sends text to all active clients
=================
*/
void SV_BroadcastPrintf (char *fmt, ...)
{
va_list arg;
char s[1024];
int i;
va_start(arg, fmt);
vsnprint(s, sizeof s, fmt, arg);
va_end(arg);
for(i=0; i<svs.maxclients; i++)
if(svs.clients[i].active && svs.clients[i].spawned){
MSG_WriteByte(&svs.clients[i].message, svc_print);
MSG_WriteString(&svs.clients[i].message, s);
}
}
/*
=================
Host_ClientCommands
Send text over to the client to be executed
=================
*/
void Host_ClientCommands (char *fmt, ...)
{
va_list arg;
char s[1024];
va_start(arg, fmt);
vsnprint(s, sizeof s, fmt, arg);
va_end(arg);
MSG_WriteByte(&host_client->message, svc_stufftext);
MSG_WriteString(&host_client->message, s);
}
/*
=====================
SV_DropClient
Called when the player is getting totally kicked off the host
if (crash = true), don't bother sending signofs
=====================
*/
void SV_DropClient (qboolean crash)
{
int saveSelf;
int i;
client_t *client;
if (!crash)
{
// send any final messages (don't check for errors)
if (NET_CanSendMessage (host_client->netconnection))
{
MSG_WriteByte (&host_client->message, svc_disconnect);
NET_SendMessage (host_client->netconnection, &host_client->message);
}
if (host_client->edict && host_client->spawned)
{
// call the prog function for removing a client
// this will set the body to a dead frame, among other things
saveSelf = pr_global_struct->self;
pr_global_struct->self = EDICT_TO_PROG(host_client->edict);
PR_ExecuteProgram (pr_global_struct->ClientDisconnect);
pr_global_struct->self = saveSelf;
}
Sys_Printf ("Client %s removed\n",host_client->name);
}
// break the net connection
NET_Close (host_client->netconnection);
host_client->netconnection = nil;
// free the client (the body stays around)
host_client->active = false;
host_client->name[0] = 0;
host_client->old_frags = -999999;
net_activeconnections--;
// send notification to all clients
for (i=0, client = svs.clients ; i<svs.maxclients ; i++, client++)
{
if (!client->active)
continue;
MSG_WriteByte (&client->message, svc_updatename);
MSG_WriteByte (&client->message, host_client - svs.clients);
MSG_WriteString (&client->message, "");
MSG_WriteByte (&client->message, svc_updatefrags);
MSG_WriteByte (&client->message, host_client - svs.clients);
MSG_WriteShort (&client->message, 0);
MSG_WriteByte (&client->message, svc_updatecolors);
MSG_WriteByte (&client->message, host_client - svs.clients);
MSG_WriteByte (&client->message, 0);
}
}
/*
==================
Host_ShutdownServer
This only happens at the end of a game, not between levels
==================
*/
void Host_ShutdownServer(qboolean crash)
{
int i;
int count;
sizebuf_t buf;
char message[4];
double start;
if (!sv.active)
return;
sv.active = false;
// stop all client sounds immediately
if (cls.state == ca_connected)
CL_Disconnect ();
// flush any pending messages - like the score!!!
start = Sys_FloatTime();
do
{
count = 0;
for (i=0, host_client = svs.clients ; i<svs.maxclients ; i++, host_client++)
{
if (host_client->active && host_client->message.cursize)
{
if (NET_CanSendMessage (host_client->netconnection))
{
NET_SendMessage(host_client->netconnection, &host_client->message);
SZ_Clear (&host_client->message);
}
else
{
NET_GetMessage(host_client->netconnection);
count++;
}
}
}
if ((Sys_FloatTime() - start) > 3.0)
break;
}
while (count);
// make sure all the clients know we're disconnecting
buf.data = (uchar *)message;
buf.maxsize = 4;
buf.cursize = 0;
MSG_WriteByte(&buf, svc_disconnect);
count = NET_SendToAll(&buf, 5);
if (count)
Con_Printf("Host_ShutdownServer: NET_SendToAll failed for %ud clients\n", count);
for (i=0, host_client = svs.clients ; i<svs.maxclients ; i++, host_client++)
if (host_client->active)
SV_DropClient(crash);
//
// clear structures
//
memset(&sv, 0, sizeof sv);
memset(svs.clients, 0, svs.maxclientslimit * sizeof *svs.clients);
}
/*
================
Host_ClearMemory
This clears all the memory used by both the client and server, but does
not reinitialize anything.
================
*/
void Host_ClearMemory (void)
{
Con_DPrintf ("Clearing memory\n");
D_FlushCaches ();
Mod_ClearAll ();
if (host_hunklevel)
Hunk_FreeToLowMark (host_hunklevel);
cls.signon = 0;
memset(&sv, 0, sizeof sv);
memset(&cl, 0, sizeof cl);
}
//============================================================================
/*
===================
Host_FilterTime
Returns false if the time is too short to run a frame
===================
*/
qboolean Host_FilterTime (float time)
{
realtime += time;
if (!cls.timedemo && realtime - oldrealtime < 1.0/72.0)
return false; // framerate is too high
host_frametime = realtime - oldrealtime;
oldrealtime = realtime;
if (host_framerate.value > 0)
host_frametime = host_framerate.value;
else
{ // don't allow really long or short frames
if (host_frametime > 0.1)
host_frametime = 0.1;
if (host_frametime < 0.001)
host_frametime = 0.001;
}
return true;
}
/*
===================
Host_GetConsoleCommands
Add them exactly as if they had been typed at the console
===================
*/
void Host_GetConsoleCommands (void)
{
char *cmd;
while (1)
{
cmd = Sys_ConsoleInput ();
if (cmd == nil)
break;
Cbuf_AddText (cmd);
}
}
/*
==================
Host_ServerFrame
==================
*/
void Host_ServerFrame (void)
{
// run the world state
pr_global_struct->frametime = host_frametime;
// set the time and clear the general datagram
SV_ClearDatagram ();
// check for new clients
SV_CheckForNewClients ();
// read client messages
SV_RunClients ();
// move things around and think
// always pause in single player if in console or menus
if (!sv.paused && (svs.maxclients > 1 || key_dest == key_game) )
SV_Physics ();
// send all messages to the clients
SV_SendClientMessages ();
}
/*
==================
Host_Frame
Runs all active servers
==================
*/
void _Host_Frame (float time)
{
static double time1 = 0;
static double time2 = 0;
static double time3 = 0;
int pass1, pass2, pass3;
if (setjmp (host_abortserver) )
return; // something bad happened, or the server disconnected
// keep the random time dependent
rand ();
// decide the simulation time
if (!Host_FilterTime (time))
return; // don't run too fast, or packets will flood out
// get new key events
Sys_SendKeyEvents ();
// allow mice or other external controllers to add commands
IN_Commands ();
// process console commands
Cbuf_Execute ();
NET_Poll();
// if running the server locally, make intentions now
if (sv.active)
CL_SendCmd ();
//-------------------
//
// server operations
//
//-------------------
// check for commands typed to the host
Host_GetConsoleCommands ();
if (sv.active)
Host_ServerFrame ();
//-------------------
//
// client operations
//
//-------------------
// if running the server remotely, send intentions now after
// the incoming messages have been read
if (!sv.active)
CL_SendCmd ();
host_time += host_frametime;
// fetch results from server
if (cls.state == ca_connected)
{
CL_ReadFromServer ();
}
// update video
if (host_speeds.value)
time1 = Sys_FloatTime ();
SCR_UpdateScreen ();
if (host_speeds.value)
time2 = Sys_FloatTime ();
// update audio
if (cls.signon == SIGNONS)
{
S_Update (r_origin, vpn, vright, vup);
CL_DecayLights ();
}
else
S_Update (vec3_origin, vec3_origin, vec3_origin, vec3_origin);
CDAudio_Update();
if (host_speeds.value)
{
pass1 = (time1 - time3)*1000;
time3 = Sys_FloatTime ();
pass2 = (time2 - time1)*1000;
pass3 = (time3 - time2)*1000;
Con_Printf ("%3d tot %3d server %3d gfx %3d snd\n",
pass1+pass2+pass3, pass1, pass2, pass3);
}
host_framecount++;
}
void Host_Frame (float time)
{
double time1, time2;
static double timetotal;
static int timecount;
int i, c, m;
if (!serverprofile.value)
{
_Host_Frame (time);
return;
}
time1 = Sys_FloatTime ();
_Host_Frame (time);
time2 = Sys_FloatTime ();
timetotal += time2 - time1;
timecount++;
if (timecount < 1000)
return;
m = timetotal*1000/timecount;
timecount = 0;
timetotal = 0;
c = 0;
for (i=0 ; i<svs.maxclients ; i++)
{
if (svs.clients[i].active)
c++;
}
Con_Printf ("serverprofile: %2d clients %2d msec\n", c, m);
}
/*
====================
Host_Init
====================
*/
void Host_Init (quakeparms_t *parms)
{
if (standard_quake)
minimum_memory = MINIMUM_MEMORY;
else
minimum_memory = MINIMUM_MEMORY_LEVELPAK;
if (COM_CheckParm ("-minmemory"))
parms->memsize = minimum_memory;
host_parms = *parms;
if (parms->memsize < minimum_memory)
Sys_Error ("Only %4.1f megs of memory available, can't execute game", parms->memsize / (float)0x100000);
com_argc = parms->argc;
com_argv = parms->argv;
Memory_Init (parms->membase, parms->memsize);
Cbuf_Init ();
Cmd_Init ();
V_Init ();
Chase_Init ();
COM_Init (parms->basedir);
Host_InitLocal ();
W_LoadWadFile ("gfx.wad");
Key_Init ();
Con_Init ();
M_Init ();
PR_Init ();
Mod_Init ();
NET_Init ();
SV_Init ();
Con_Printf ("Exe: 00:00:00 Jun 22 1996\n");
Con_Printf ("%4.1f megabyte heap\n",parms->memsize/ (1024*1024.0));
R_InitTextures (); // needed even for dedicated servers
if (cls.state != ca_dedicated)
{
host_basepal = (byte *)COM_LoadHunkFile ("gfx/palette.lmp");
if (!host_basepal)
Sys_Error ("Couldn't load gfx/palette.lmp");
host_colormap = (byte *)COM_LoadHunkFile ("gfx/colormap.lmp");
if (!host_colormap)
Sys_Error ("Couldn't load gfx/colormap.lmp");
VID_Init (host_basepal);
Draw_Init ();
SCR_Init ();
R_Init ();
S_Init ();
CDAudio_Init ();
Sbar_Init ();
CL_Init ();
}
IN_Init ();
Cbuf_InsertText ("exec quake.rc\n");
Hunk_AllocName (0, "-HOST_HUNKLEVEL-");
host_hunklevel = Hunk_LowMark ();
host_initialized = true;
Sys_Printf ("========Quake Initialized=========\n");
}
/*
===============
Host_Shutdown
FIXME: this is a callback from Sys_Quit and Sys_Error. It would be better
to run quit through here before the final handoff to the sys code.
===============
*/
void Host_Shutdown(void)
{
static qboolean isdown = false;
if (isdown)
{
print ("recursive shutdown\n");
return;
}
isdown = true;
// keep Con_Printf from trying to update the screen
scr_disabled_for_loading = true;
Host_WriteConfiguration ();
CDAudio_Shutdown ();
NET_Shutdown ();
S_Shutdown();
IN_Shutdown ();
if (cls.state != ca_dedicated)
{
VID_Shutdown();
}
IN_Shutdown();
}