From 6951f13ce4fee55cd9241681d0a7caee7c91fe2c Mon Sep 17 00:00:00 2001
From: "Gustavo J. A. M. Carneiro" <gjc@inescporto.pt>
Date: Fri, 28 Sep 2007 19:13:19 +0100
Subject: [PATCH] On course-change, print velocity in addition to position.

---
 samples/main-random-walk.cc | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/samples/main-random-walk.cc b/samples/main-random-walk.cc
index b1b542c17..cccd64936 100644
--- a/samples/main-random-walk.cc
+++ b/samples/main-random-walk.cc
@@ -16,11 +16,13 @@
 using namespace ns3;
 
 static void 
-CourseChange (ns3::TraceContext const&, Ptr<const MobilityModel> position)
+CourseChange (ns3::TraceContext const&, Ptr<const MobilityModel> mobility)
 {
-  Position pos = position->Get ();
-  std::cout << Simulator::Now () << ", pos=" << position << ", x=" << pos.x << ", y=" << pos.y
-            << ", z=" << pos.z << std::endl;
+  Position pos = mobility->Get ();
+  Speed vel = mobility->GetSpeed ();
+  std::cout << Simulator::Now () << ", model=" << mobility << ", POS: x=" << pos.x << ", y=" << pos.y
+            << ", z=" << pos.z << "; VEL:" << vel.dx << ", y=" << vel.dy
+            << ", z=" << vel.dz << std::endl;
 }
 
 int main (int argc, char *argv[])