/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */

#include <vector>

#include "ns3/ptr.h"

#include "ns3/mobility-model.h"

#include "ns3/position-allocator.h"

#include "ns3/default-value.h"

#include "ns3/command-line.h"

#include "ns3/simulator.h"

#include "ns3/nstime.h"

#include "ns3/node.h"

#include "ns3/node-list.h"

#include "ns3/mobility-helper.h"

using namespace ns3;

static void 

CourseChange (ns3::TraceContext const&, Ptr<const MobilityModel> mobility)

{

  Vector pos = mobility->GetPosition ();

  Vector vel = mobility->GetVelocity ();

  std::cout << Simulator::Now () << ", model=" << mobility << ", POS: x=" << pos.x << ", y=" << pos.y

            << ", z=" << pos.z << "; VEL:" << vel.x << ", y=" << vel.y

            << ", z=" << vel.z << std::endl;

}

int main (int argc, char *argv[])

{

  DefaultValue::Bind ("RandomWalk2dMode", "Time");

  DefaultValue::Bind ("RandomWalk2dTime", "2s");

  DefaultValue::Bind ("RandomWalk2dSpeed", "Constant:1.0");

  DefaultValue::Bind ("RandomWalk2dBounds", "0:200:0:100");

  DefaultValue::Bind ("RandomTopologyMobilityType", "RandomWalk2dMobilityModel");

  CommandLine::Parse (argc, argv);

  for (uint32_t i = 0; i < 100; i++)

    {

      Ptr<Node> node = CreateObject<Node> ();

    }

  MobilityHelper mobility;

  mobility.EnableNotifier ();

  mobility.SetPositionAllocator ("RandomDiscPositionAllocator",

  mobility.SetMobilityModel ("RandomWalk2dMobilityModel",

  mobility.Layout (NodeList::Begin (), NodeList::End ());

  NodeList::Connect ("/nodes/*/$MobilityModelNotifier/course-change", 

                     MakeCallback (&CourseChange));

  Simulator::StopAt (Seconds (100.0));

  Simulator::Run ();

  return 0;

}