#Agent/UDP set packetSize_ 6000

# ======================================================================
# Define options
# ======================================================================
set val(ifqlen)         50                         ;# max packet in ifq
set val(nn)             3                          ;# number of mobilenodes
set val(rp)             MFlood                     ;# routing protocol
set val(chan)       Channel/WirelessChannel
set val(prop)       Propagation/TwoRayGround
set val(netif)      Phy/WirelessPhy
set val(mac)        Mac/802_11
set val(ifq)        Queue/DropTail/PriQueue
set val(ll)         LL
set val(ant)        Antenna/OmniAntenna
set val(stop)	    200

# ======================================================================
# Main Program
# ======================================================================

#ns-random 0

# Initialize Global Variables
set ns_ [new Simulator]
set tracefd [open mflood.tr w]
$ns_ trace-all $tracefd

set namtrace    [open mflood.nam w]
$ns_ namtrace-all-wireless $namtrace 1000 500

# set up topography
set topo [new Topography]
$topo load_flatgrid 1000 500

# Create God
create-god $val(nn)


# Create the specified number of mobilenodes [$val(nn)] and "attach" them
# to the channel. 
# configure node
set channel [new Channel/WirelessChannel]
$channel set errorProbability_ 0.0

        $ns_ node-config -adhocRouting $val(rp) \
			 -llType $val(ll) \
			 -macType $val(mac) \
			 -ifqType $val(ifq) \
			 -ifqLen $val(ifqlen) \
			 -antType $val(ant) \
			 -propType $val(prop) \
			 -phyType $val(netif) \
			 -channel $channel \
			 -topoInstance $topo \
			 -agentTrace ON \
			 -routerTrace ON\
			 -macTrace OFF \
			 -movementTrace OFF			
			 
	for {set i 0} {$i < $val(nn) } {incr i} {
		set node_($i) [$ns_ node]	
		$node_($i) random-motion 0;	
	}

# Provide initial (X,Y, for now Z=0) co-ordinates for mobilenodes
$node_(0) set X_ 100.0
$node_(0) set Y_ 200.0
$node_(0) set Z_ 0.0

$node_(1) set X_ 250.0
$node_(1) set Y_ 200.0
$node_(1) set Z_ 0.0

$node_(2) set X_ 400.0
$node_(2) set Y_ 200.0
$node_(2) set Z_ 0.0

# Define node initial position in nam
for {set i 0} {$i < $val(nn)} {incr i} {

    # 20 defines the node size in nam, must adjust it according to your scenario
    # The function must be called after mobility model is defined

    $ns_ initial_node_pos $node_($i) 20
}

set udp_(0) [new Agent/UDP]
$ns_ attach-agent $node_(0) $udp_(0) 

set null_(0) [new Agent/Null]
$ns_ attach-agent $node_(2) $null_(0)

$ns_ connect $udp_(0) $null_(0)

set cbr_(0) [new Application/Traffic/CBR]
$cbr_(0) set packetSize_ 512
$cbr_(0) set interval_ 4.0
$cbr_(0) set random_ 1
$cbr_(0) set maxpkts_ 10000
$cbr_(0) attach-agent $udp_(0)
$ns_ at 10.0 "$cbr_(0) start"

# Tell nodes when the simulation ends
for {set i 0} {$i < $val(nn) } {incr i} {
    $ns_ at $val(stop).0 "$node_($i) reset";
}
$ns_ at $val(stop).0 "stop"
$ns_ at $val(stop).01 "puts \"NS EXITING...\" ; $ns_ halt"
proc stop {} {
    global ns_ tracefd
    $ns_ flush-trace
    close $tracefd
}

puts "Starting Simulation..."
$ns_ run