# *******************************************************************# Copyright (C) 2004 Thomas Kunz, CRC Canada, BCAST for IPv4.# DISTRIBUTED WITH NO WARRANTY, EXPRESS OR IMPLIED.# See the GNU Library General Public License (file COPYING in the# MANET_multicast directory) for conditions of use and redistribution.# ********************************************************************# ======================================================================# Default Script Options# ======================================================================set opt(ragent)		Agent/rtProto/BCASTset opt(pos)		NONEif { $opt(pos) != "NONE" } {	puts "*** WARNING: BCAST using $opt(pos) position configuration..."}# ======================================================================Agent instproc init args {        $self next $args}       Agent/rtProto instproc init args {        $self next $args}       Agent/rtProto/BCAST instproc init args {        $self next $args}       Agent/rtProto/BCAST set sport_	0Agent/rtProto/BCAST set dport_	0# ======================================================================proc create-routing-agent { node id } {	global ns_ ragent_ tracefd opt	#	#  Create the Routing Agent and attach it to port 255.	#	set ragent_($id) [new $opt(ragent) $id]	set ragent $ragent_($id)	$node attach $ragent 255	$ragent if-queue [$node set ifq_(0)]	;# ifq between LL and MAC	$ns_ at 0.$id "$ragent_($id) start"	;# start BEACON/HELLO Messages	#	# Drop Target (always on regardless of other tracing)	#	set drpT [cmu-trace Drop "RTR" $node]	$ragent drop-target $drpT		#	# Log Target	#	set T [new Trace/Generic]	$T target [$ns_ set nullAgent_]	$T attach $tracefd	$T set src_ $id	$ragent log-target $T}proc create-mobile-node { id } {	global ns_ chan prop topo tracefd opt node_	global chan prop tracefd topo opt	set node_($id) [new MobileNode]	set node $node_($id)	$node random-motion 0		;# disable random motion	$node topography $topo	#	# This Trace Target is used to log changes in direction	# and velocity for the mobile node.	#	set T [new Trace/Generic]	$T target [$ns_ set nullAgent_]	$T attach $tracefd	$T set src_ $id	$node log-target $T	$node add-interface $chan $prop $opt(ll) $opt(mac)	\		$opt(ifq) $opt(ifqlen) $opt(netif) $opt(ant)	#	# Create a Routing Agent for the Node	#	create-routing-agent $node $id	# ============================================================	if { $opt(pos) == "Box" } {            set spacing 200            set maxrow 3            set col [expr ($id - 1) % $maxrow]            set row [expr ($id - 1) / $maxrow]            $node set X_ [expr $col * $spacing]            $node set Y_ [expr $row * $spacing]            $node set Z_ 0.0            $node set speed_ 0.0            $ns_ at 0.0 "$node_($id) start"	} elseif { $opt(pos) == "Random" } {            $node random-motion 1            $ns_ at 0.0 "$node_($id) start"        }        }