Magazyn Amiga 15/MA_Cover_15.iso/source/winquake/host.c

C/C++ Source or Header | 2000-01-29 | 19.7 KB | 967 lines

/*
Copyright (C) 1996-1997 Id Software, Inc.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/
// host.c -- coordinates spawning and killing of local servers

#include "quakedef.h"
#include "r_local.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};

#ifdef QUAKE2
cvar_t    developer = {"developer","1"};    // should be 0 for release!
#else
cvar_t    developer = {"developer","0"};
#endif

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 *message, ...)
{
    va_list        argptr;
    char        string[1024];

    va_start (argptr,message);
    vsprintf (string,message,argptr);
    va_end (argptr);
    Con_DPrintf ("Host_EndGame: %s\n",string);

    if (sv.active)
        Host_ShutdownServer (false);

    if (cls.state == ca_dedicated)
        Sys_Error ("Host_EndGame: %s\n",string);    // 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 *error, ...)
{
    va_list        argptr;
    char        string[1024];
    static    qboolean inerror = false;

    if (inerror)
        Sys_Error ("Host_Error: recursively entered");
    inerror = true;

    SCR_EndLoadingPlaque ();        // reenable screen updates

    va_start (argptr,error);
    vsprintf (string,error,argptr);
    va_end (argptr);
    Con_Printf ("Host_Error: %s\n",string);

    if (sv.active)
        Host_ShutdownServer (false);

    if (cls.state == ca_dedicated)
        Sys_Error ("Host_Error: %s\n",string);    // 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 = Q_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 = Q_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(client_t), "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)
    {
#ifdef AMIGA
        if (strlen(com_gamedir) == 0 ||
            com_gamedir[strlen(com_gamedir)-1] == ':')
            f = fopen (va("%sconfig.cfg",com_gamedir), "w");
        else
            f = fopen (va("%s/config.cfg",com_gamedir), "w");
#else
        f = fopen (va("%s/config.cfg",com_gamedir), "w");
#endif
        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        argptr;
    char        string[1024];

    va_start (argptr,fmt);
    vsprintf (string, fmt,argptr);
    va_end (argptr);

    MSG_WriteByte (&host_client->message, svc_print);
    MSG_WriteString (&host_client->message, string);
}

/*
=================
SV_BroadcastPrintf

Sends text to all active clients
=================
*/
void SV_BroadcastPrintf (char *fmt, ...)
{
    va_list        argptr;
    char        string[1024];
    int            i;

    va_start (argptr,fmt);
    vsprintf (string, fmt,argptr);
    va_end (argptr);

    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, string);
        }
}

/*
=================
Host_ClientCommands

Send text over to the client to be executed
=================
*/
void Host_ClientCommands (char *fmt, ...)
{
    va_list        argptr;
    char        string[1024];

    va_start (argptr,fmt);
    vsprintf (string, fmt,argptr);
    va_end (argptr);

    MSG_WriteByte (&host_client->message, svc_stufftext);
    MSG_WriteString (&host_client->message, string);
}

/*
=====================
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 = NULL;

// 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 = 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 %u 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(client_t));
}


/*
================
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)
            break;
        Cbuf_AddText (cmd);
    }
}


/*
==================
Host_ServerFrame

==================
*/
#ifdef FPS_20

void _Host_ServerFrame (void)
{
// run the world state
    pr_global_struct->frametime = host_frametime;

// 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 ();
}

void Host_ServerFrame (void)
{
    float    save_host_frametime;
    float    temp_host_frametime;

// 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 ();

    temp_host_frametime = save_host_frametime = host_frametime;
    while(temp_host_frametime > (1.0/72.0))
    {
        if (temp_host_frametime > 0.05)
            host_frametime = 0.05;
        else
            host_frametime = temp_host_frametime;
        temp_host_frametime -= host_frametime;
        _Host_ServerFrame ();
    }
    host_frametime = save_host_frametime;

// send all messages to the clients
    SV_SendClientMessages ();
}

#else

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 ();
}

#endif


/*
==================
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 ("%3i tot %3i server %3i gfx %3i 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: %2i clients %2i msec\n",  c,  m);
}

//============================================================================


extern int vcrFile;
#define    VCR_SIGNATURE    0x56435231
// "VCR1"

void Host_InitVCR (quakeparms_t *parms)
{
    int        i, len, n;
    char    *p;

    if (COM_CheckParm("-playback"))
    {
        if (com_argc != 2)
            Sys_Error("No other parameters allowed with -playback\n");

        Sys_FileOpenRead("quake.vcr", &vcrFile);
        if (vcrFile == -1)
            Sys_Error("playback file not found\n");

        Sys_FileRead (vcrFile, &i, sizeof(int));
        if (i != VCR_SIGNATURE)
            Sys_Error("Invalid signature in vcr file\n");

        Sys_FileRead (vcrFile, &com_argc, sizeof(int));
        com_argv = malloc(com_argc * sizeof(char *));
        com_argv[0] = parms->argv[0];
        for (i = 0; i < com_argc; i++)
        {
            Sys_FileRead (vcrFile, &len, sizeof(int));
            p = malloc(len);
            Sys_FileRead (vcrFile, p, len);
            com_argv[i+1] = p;
        }
        com_argc++; /* add one for arg[0] */
        parms->argc = com_argc;
        parms->argv = com_argv;
    }

    if ( (n = COM_CheckParm("-record")) != 0)
    {
        vcrFile = Sys_FileOpenWrite("quake.vcr");

        i = VCR_SIGNATURE;
        Sys_FileWrite(vcrFile, &i, sizeof(int));
        i = com_argc - 1;
        Sys_FileWrite(vcrFile, &i, sizeof(int));
        for (i = 1; i < com_argc; i++)
        {
            if (i == n)
            {
                len = 10;
                Sys_FileWrite(vcrFile, &len, sizeof(int));
                Sys_FileWrite(vcrFile, "-playback", len);
                continue;
            }
            len = Q_strlen(com_argv[i]) + 1;
            Sys_FileWrite(vcrFile, &len, sizeof(int));
            Sys_FileWrite(vcrFile, com_argv[i], len);
        }
    }

}

/*
====================
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 ();
    Host_InitVCR (parms);
    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: "__TIME__" "__DATE__"\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");

#ifndef _WIN32 // on non win32, mouse comes before video for security reasons
        IN_Init ();
#endif
        VID_Init (host_basepal);

        Draw_Init ();
        SCR_Init ();
        R_Init ();
#ifndef    _WIN32
    // on Win32, sound initialization has to come before video initialization, so we
    // can put up a popup if the sound hardware is in use
        S_Init ();
#else

#ifdef    GLQUAKE
    // FIXME: doesn't use the new one-window approach yet
        S_Init ();
#endif

#endif    // _WIN32
        CDAudio_Init ();
        Sbar_Init ();
        CL_Init ();
#ifdef _WIN32 // on non win32, mouse comes before video for security reasons
        IN_Init ();
#endif
    }

    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)
    {
        printf ("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();
    }
}