# ======================================================================
# Define options
# ======================================================================
set val(chan)           Channel/WirelessChannel    ;# Channel Type
set val(prop)           Propagation/TwoRayGround   ;# radio-propagation model
set val(netif)          Phy/WirelessPhy
set val(mac)            Mac/802_11
set arg1 [lindex $argv 0]
set val(ll)             LL                         ;# link layer type
set val(ant)            Antenna/OmniAntenna        ;# antenna model
set val(ifqlen)         50                         ;# max packet in ifq
set val(nn)              [lindex $argv 0]                       ;# number of mobilenodes
set val(rp)            [lindex $argv 1]                       ;# routing protocol

set val(ifq)            Queue/DropTail/PriQueue


set val(x)  500
set val(y)  500
set val(stop) 150;


set ns            [new Simulator]
#Creating trace file and nam file
set tracefd       [open M.tr w]
set windowVsTime2 [open win.tr w]
set namtrace      [open M.nam w]

$ns trace-all $tracefd
$ns namtrace-all-wireless $namtrace $val(x) $val(y)

# set up topography object
set topo       [new Topography]

$topo load_flatgrid $val(x) $val(y)

create-god $val(nn)

# configure the nodes
        $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) \
                   -channelType $val(chan) \
                   -topoInstance $topo \
                   -agentTrace ON \
                   -routerTrace ON \
                   -macTrace OFF \
                   -movementTrace ON

      for {set i 0} {$i < $val(nn) } { incr i } {
            set node_($i) [$ns node]
      }

# Provide initial location of mobilenodes
for {set i 0} {$i < $val(nn) } { incr i } {
	set u [new RandomVariable/Uniform]
        $u set min_ 20
        $u set max_ 600

	set y [new RandomVariable/Uniform]
        $y set min_ 20
        $y set max_ 600



 	$node_($i) set X_ [$u value]
	$node_($i) set Y_ [$y value]
	$node_($i) set Z_ 0.0

}
	$node_(0) set X_ 00.0
	$node_(0) set Y_ 100.0
	$node_(0) set Z_ 0.0

	$node_(1) set X_ 20.0
	$node_(1) set Y_ 20.0
	$node_(1) set Z_ 0.0

	$node_(2) set X_ 500.0
	$node_(2) set Y_ 500.0
	$node_(2) set Z_ 0.0

# Generation of movements
$ns at 10.0 "$node_(0) setdest 250.0 250.0 3.0"
$ns at 15.0 "$node_(1) setdest 45.0 285.0 5.0"
$ns at 90.0 "$node_(0) setdest 490.0 300.0 5.0"
$ns at 10.0 "$node_(2) setdest 100 100.0 20.0"



# Set a TCP connection between node_(0) and node_(1)
set tcp [new Agent/TCP]
$tcp set class_ 2			# Changes window_ for the $tcp object only
set sink [new Agent/TCPSink]
$ns attach-agent $node_(0) $tcp
$ns attach-agent $node_(1) $sink
$ns connect $tcp $sink
set ftp [new Application/FTP]
$ftp attach-agent $tcp
$ns at 5.0 "$ftp start"

# Set a TCP connection between node_(2) and node_(1)
set tcp1 [new Agent/TCP]
$tcp1 set class_ 3			# Changes window_ for the $tcp object only
 set sink1 [new Agent/TCPSink]
$ns attach-agent $node_(2) $tcp1
 $ns attach-agent $node_(1) $sink1
$ns connect $tcp1 $sink1
set ftp1 [new Application/FTP]
$ftp1 attach-agent $tcp1
$ns at 5.0 "$ftp1 start"

$ns color 2 Blue
$ns color 3 Red

# Printing the window size
proc plotWindow {tcpSource file} {
global ns
set time 0.01
set now [$ns now]
set packetSize_ 1000 ;
set cwnd [$tcpSource set cwnd_]
puts $file "$now $cwnd"
$ns at [expr $now+$time] "plotWindow $tcpSource $file" }
$ns at 10.1 "plotWindow $tcp $windowVsTime2"

# Define node initial position in nam
for {set i 0} {$i < $val(nn)} { incr i } {
# 30 defines the node size for nam
$ns initial_node_pos $node_($i) 35
}

# Telling nodes when the simulation ends
for {set i 0} {$i < $val(nn) } { incr i } {
    $ns at $val(stop) "$node_($i) reset";
}

# ending nam and the simulation
$ns at $val(stop) "$ns nam-end-wireless $val(stop)"
$ns at $val(stop) "stop"
$ns at 150.01 "puts \"end simulation\" ; $ns halt"
proc stop {} {
    global ns tracefd namtrace
    $ns flush-trace
    close $tracefd
    close $namtrace

	exec nam M.nam &
	exec ./run.sh &
	exit 0
}

$ns run