2007-06-21 22:00:00 +02:00
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/*
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Copyright (C) 1997-2001 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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// sv_main.c -- server main program
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#include "engine.h"
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#include "server.h"
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/*
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=============================================================================
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2007-07-28 22:00:00 +02:00
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Msg redirection
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2007-06-21 22:00:00 +02:00
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=============================================================================
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*/
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char sv_outputbuf[SV_OUTPUTBUF_LENGTH];
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void SV_FlushRedirect (int sv_redirected, char *outputbuf)
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{
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if (sv_redirected == RD_PACKET)
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{
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Netchan_OutOfBandPrint (NS_SERVER, net_from, "print\n%s", outputbuf);
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}
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else if (sv_redirected == RD_CLIENT)
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{
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MSG_WriteByte (&sv_client->netchan.message, svc_print);
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MSG_WriteByte (&sv_client->netchan.message, PRINT_HIGH);
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MSG_WriteString (&sv_client->netchan.message, outputbuf);
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}
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}
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/*
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=============================================================================
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EVENT MESSAGES
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=============================================================================
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*/
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/*
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=================
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SV_ClientPrintf
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Sends text across to be displayed if the level passes
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=================
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*/
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void SV_ClientPrintf (client_t *cl, int level, char *fmt, ...)
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{
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va_list argptr;
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char string[1024];
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if (level < cl->messagelevel)
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return;
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va_start (argptr,fmt);
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vsprintf (string, fmt,argptr);
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va_end (argptr);
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MSG_WriteByte (&cl->netchan.message, svc_print);
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MSG_WriteByte (&cl->netchan.message, level);
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MSG_WriteString (&cl->netchan.message, string);
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}
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/*
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=================
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SV_BroadcastPrintf
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Sends text to all active clients
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=================
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*/
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void SV_BroadcastPrintf (int level, char *fmt, ...)
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{
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va_list argptr;
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char string[2048];
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client_t *cl;
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int i;
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va_start (argptr,fmt);
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vsprintf (string, fmt,argptr);
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va_end (argptr);
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// echo to console
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if (dedicated->value)
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{
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char copy[1024];
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int i;
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// mask off high bits
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for (i=0 ; i<1023 && string[i] ; i++)
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copy[i] = string[i]&127;
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copy[i] = 0;
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2007-07-28 22:00:00 +02:00
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Msg ("%s", copy);
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2007-06-21 22:00:00 +02:00
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}
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for (i=0, cl = svs.clients ; i<maxclients->value; i++, cl++)
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{
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if (level < cl->messagelevel)
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continue;
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if (cl->state != cs_spawned)
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continue;
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MSG_WriteByte (&cl->netchan.message, svc_print);
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MSG_WriteByte (&cl->netchan.message, level);
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MSG_WriteString (&cl->netchan.message, string);
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}
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}
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/*
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=================
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SV_BroadcastCommand
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Sends text to all active clients
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=================
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*/
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void SV_BroadcastCommand (char *fmt, ...)
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{
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va_list argptr;
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char string[1024];
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if (!sv.state)
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return;
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va_start (argptr,fmt);
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vsprintf (string, fmt,argptr);
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va_end (argptr);
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MSG_WriteByte (&sv.multicast, svc_stufftext);
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MSG_WriteString (&sv.multicast, string);
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2007-07-21 22:00:00 +02:00
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SV_Multicast (NULL, MSG_ALL_R);
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2007-06-21 22:00:00 +02:00
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}
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/*
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=================
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SV_Multicast
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Sends the contents of sv.multicast to a subset of the clients,
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then clears sv.multicast.
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MULTICAST_ALL same as broadcast (origin can be NULL)
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MULTICAST_PVS send to clients potentially visible from org
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MULTICAST_PHS send to clients potentially hearable from org
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=================
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*/
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2007-07-21 22:00:00 +02:00
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void SV_Multicast (vec3_t origin, msgtype_t to)
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2007-06-21 22:00:00 +02:00
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{
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client_t *client;
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byte *mask;
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int leafnum, cluster;
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int j;
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bool reliable;
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int area1, area2;
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reliable = false;
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2007-07-21 22:00:00 +02:00
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if (to != MSG_ALL_R && to != MSG_ALL)
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2007-06-21 22:00:00 +02:00
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{
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leafnum = CM_PointLeafnum (origin);
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area1 = CM_LeafArea (leafnum);
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}
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else
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{
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leafnum = 0; // just to avoid compiler warnings
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area1 = 0;
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}
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// if doing a serverrecord, store everything
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if (svs.demofile)
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SZ_Write (&svs.demo_multicast, sv.multicast.data, sv.multicast.cursize);
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switch (to)
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{
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2007-07-21 22:00:00 +02:00
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case MSG_ALL_R:
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2007-06-21 22:00:00 +02:00
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reliable = true; // intentional fallthrough
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2007-07-21 22:00:00 +02:00
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case MSG_ALL:
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2007-06-21 22:00:00 +02:00
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leafnum = 0;
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mask = NULL;
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break;
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2007-07-21 22:00:00 +02:00
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case MSG_PHS_R:
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2007-06-21 22:00:00 +02:00
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reliable = true; // intentional fallthrough
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2007-07-21 22:00:00 +02:00
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case MSG_PHS:
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2007-06-21 22:00:00 +02:00
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leafnum = CM_PointLeafnum (origin);
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cluster = CM_LeafCluster (leafnum);
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mask = CM_ClusterPHS (cluster);
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break;
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2007-07-21 22:00:00 +02:00
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case MSG_PVS_R:
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2007-06-21 22:00:00 +02:00
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reliable = true; // intentional fallthrough
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2007-07-21 22:00:00 +02:00
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case MSG_PVS:
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2007-06-21 22:00:00 +02:00
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leafnum = CM_PointLeafnum (origin);
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cluster = CM_LeafCluster (leafnum);
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mask = CM_ClusterPVS (cluster);
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break;
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2007-07-21 22:00:00 +02:00
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case MSG_ONE:
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//implement me
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return;
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break;
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2007-06-21 22:00:00 +02:00
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default:
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mask = NULL;
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Com_Error (ERR_FATAL, "SV_Multicast: bad to:%i", to);
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}
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// send the data to all relevent clients
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for (j = 0, client = svs.clients; j < maxclients->value; j++, client++)
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{
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if (client->state == cs_free || client->state == cs_zombie)
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continue;
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if (client->state != cs_spawned && !reliable)
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continue;
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if (mask)
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{
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leafnum = CM_PointLeafnum (client->edict->s.origin);
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cluster = CM_LeafCluster (leafnum);
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area2 = CM_LeafArea (leafnum);
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if (!CM_AreasConnected (area1, area2))
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continue;
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if ( mask && (!(mask[cluster>>3] & (1<<(cluster&7)) ) ) )
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continue;
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}
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if (reliable)
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SZ_Write (&client->netchan.message, sv.multicast.data, sv.multicast.cursize);
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else
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SZ_Write (&client->datagram, sv.multicast.data, sv.multicast.cursize);
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}
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SZ_Clear (&sv.multicast);
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}
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/*
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==================
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SV_StartSound
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Each entity can have eight independant sound sources, like voice,
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weapon, feet, etc.
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If cahnnel & 8, the sound will be sent to everyone, not just
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things in the PHS.
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FIXME: if entity isn't in PHS, they must be forced to be sent or
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have the origin explicitly sent.
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Channel 0 is an auto-allocate channel, the others override anything
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already running on that entity/channel pair.
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An attenuation of 0 will play full volume everywhere in the level.
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Larger attenuations will drop off. (max 4 attenuation)
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Timeofs can range from 0.0 to 0.1 to cause sounds to be started
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later in the frame than they normally would.
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If origin is NULL, the origin is determined from the entity origin
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or the midpoint of the entity box for bmodels.
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==================
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*/
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void SV_StartSound (vec3_t origin, edict_t *entity, int channel,
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int soundindex, float volume,
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float attenuation, float timeofs)
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{
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int sendchan;
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int flags;
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int i;
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int ent;
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vec3_t origin_v;
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bool use_phs;
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if (volume < 0 || volume > 1.0)
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Com_Error (ERR_FATAL, "SV_StartSound: volume = %f", volume);
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if (attenuation < 0 || attenuation > 4)
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Com_Error (ERR_FATAL, "SV_StartSound: attenuation = %f", attenuation);
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// if (channel < 0 || channel > 15)
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// Com_Error (ERR_FATAL, "SV_StartSound: channel = %i", channel);
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if (timeofs < 0 || timeofs > 0.255)
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Com_Error (ERR_FATAL, "SV_StartSound: timeofs = %f", timeofs);
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ent = NUM_FOR_EDICT(entity);
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if (channel & 8) // no PHS flag
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{
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use_phs = false;
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channel &= 7;
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}
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else
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use_phs = true;
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sendchan = (ent<<3) | (channel&7);
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flags = 0;
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if (volume != DEFAULT_SOUND_PACKET_VOLUME)
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flags |= SND_VOLUME;
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if (attenuation != DEFAULT_SOUND_PACKET_ATTENUATION)
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flags |= SND_ATTENUATION;
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// the client doesn't know that bmodels have weird origins
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// the origin can also be explicitly set
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if ( (entity->svflags & SVF_NOCLIENT)
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|| (entity->solid == SOLID_BSP)
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|| origin )
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flags |= SND_POS;
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// always send the entity number for channel overrides
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flags |= SND_ENT;
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if (timeofs)
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flags |= SND_OFFSET;
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// use the entity origin unless it is a bmodel or explicitly specified
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if (!origin)
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{
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origin = origin_v;
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if (entity->solid == SOLID_BSP)
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{
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for (i=0 ; i<3 ; i++)
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origin_v[i] = entity->s.origin[i]+0.5*(entity->mins[i]+entity->maxs[i]);
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}
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else
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{
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VectorCopy (entity->s.origin, origin_v);
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}
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}
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MSG_WriteByte (&sv.multicast, svc_sound);
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MSG_WriteByte (&sv.multicast, flags);
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MSG_WriteByte (&sv.multicast, soundindex);
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if (flags & SND_VOLUME)
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MSG_WriteByte (&sv.multicast, volume*255);
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if (flags & SND_ATTENUATION)
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MSG_WriteByte (&sv.multicast, attenuation*64);
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if (flags & SND_OFFSET)
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MSG_WriteByte (&sv.multicast, timeofs*1000);
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if (flags & SND_ENT)
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MSG_WriteShort (&sv.multicast, sendchan);
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if (flags & SND_POS)
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MSG_WritePos (&sv.multicast, origin);
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// if the sound doesn't attenuate,send it to everyone
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// (global radio chatter, voiceovers, etc)
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if (attenuation == ATTN_NONE)
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use_phs = false;
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if (channel & CHAN_RELIABLE)
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{
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2007-07-21 22:00:00 +02:00
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if (use_phs) SV_Multicast (origin, MSG_PHS_R);
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else SV_Multicast (origin, MSG_ALL_R);
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2007-06-21 22:00:00 +02:00
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}
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else
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{
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2007-07-21 22:00:00 +02:00
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if (use_phs) SV_Multicast (origin, MSG_PHS);
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else SV_Multicast (origin, MSG_ALL);
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2007-06-21 22:00:00 +02:00
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}
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}
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/*
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===============================================================================
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FRAME UPDATES
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===============================================================================
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*/
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/*
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=======================
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SV_SendClientDatagram
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=======================
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*/
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bool SV_SendClientDatagram (client_t *client)
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{
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byte msg_buf[MAX_MSGLEN];
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2007-08-11 22:00:00 +02:00
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sizebuf_t msg;
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2007-06-21 22:00:00 +02:00
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SV_BuildClientFrame (client);
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SZ_Init (&msg, msg_buf, sizeof(msg_buf));
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// send over all the relevant entity_state_t
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// and the player_state_t
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SV_WriteFrameToClient (client, &msg);
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// copy the accumulated multicast datagram
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// for this client out to the message
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// it is necessary for this to be after the WriteEntities
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// so that entity references will be current
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if (client->datagram.overflowed)
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2007-07-28 22:00:00 +02:00
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Msg ("WARNING: datagram overflowed for %s\n", client->name);
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2007-06-21 22:00:00 +02:00
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else
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SZ_Write (&msg, client->datagram.data, client->datagram.cursize);
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SZ_Clear (&client->datagram);
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if (msg.overflowed)
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{ // must have room left for the packet header
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2007-07-28 22:00:00 +02:00
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Msg ("WARNING: msg overflowed for %s\n", client->name);
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2007-06-21 22:00:00 +02:00
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SZ_Clear (&msg);
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}
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// send the datagram
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Netchan_Transmit (&client->netchan, msg.cursize, msg.data);
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// record the size for rate estimation
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client->message_size[sv.framenum % RATE_MESSAGES] = msg.cursize;
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return true;
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}
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/*
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==================
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SV_DemoCompleted
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==================
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*/
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void SV_DemoCompleted (void)
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{
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if (sv.demofile)
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{
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FS_Close (sv.demofile);
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sv.demofile = NULL;
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}
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SV_Nextserver ();
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}
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/*
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=======================
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SV_RateDrop
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Returns true if the client is over its current
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bandwidth estimation and should not be sent another packet
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=======================
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*/
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bool SV_RateDrop (client_t *c)
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{
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int total;
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int i;
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// never drop over the loopback
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if (c->netchan.remote_address.type == NA_LOOPBACK)
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return false;
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total = 0;
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for (i = 0 ; i < RATE_MESSAGES ; i++)
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{
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total += c->message_size[i];
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}
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if (total > c->rate)
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{
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c->surpressCount++;
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c->message_size[sv.framenum % RATE_MESSAGES] = 0;
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return true;
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}
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return false;
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}
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/*
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=======================
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SV_SendClientMessages
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=======================
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*/
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void SV_SendClientMessages (void)
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{
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int i;
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client_t *c;
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int msglen;
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byte msgbuf[MAX_MSGLEN];
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msglen = 0;
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// read the next demo message if needed
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if (sv.state == ss_demo && sv.demofile)
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{
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if (sv_paused->value)
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msglen = 0;
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else
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{
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// get the next message
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if(!FS_Read (sv.demofile, &msglen, 4))
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{
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SV_DemoCompleted ();
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return;
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}
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msglen = LittleLong (msglen);
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if (msglen == -1)
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{
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SV_DemoCompleted ();
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return;
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}
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if (msglen > MAX_MSGLEN)
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Com_Error (ERR_DROP, "SV_SendClientMessages: msglen > MAX_MSGLEN");
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if(!FS_Read (sv.demofile, msgbuf, msglen))
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{
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SV_DemoCompleted ();
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return;
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}
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}
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}
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// send a message to each connected client
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for (i=0, c = svs.clients ; i<maxclients->value; i++, c++)
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{
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if (!c->state)
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continue;
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// if the reliable message overflowed,
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// drop the client
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if (c->netchan.message.overflowed)
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{
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SZ_Clear (&c->netchan.message);
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SZ_Clear (&c->datagram);
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SV_BroadcastPrintf (PRINT_HIGH, "%s overflowed\n", c->name);
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SV_DropClient (c);
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}
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if (sv.state == ss_cinematic
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|| sv.state == ss_demo
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|| sv.state == ss_pic
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)
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Netchan_Transmit (&c->netchan, msglen, msgbuf);
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else if (c->state == cs_spawned)
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{
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// don't overrun bandwidth
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if (SV_RateDrop (c))
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continue;
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SV_SendClientDatagram (c);
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}
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else
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{
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// just update reliable if needed
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if (c->netchan.message.cursize || curtime - c->netchan.last_sent > 1000 )
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Netchan_Transmit (&c->netchan, 0, NULL);
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}
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}
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}
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