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NS2 Mobility Helper

About

This is an update to the Ns2MobilityHelper class included in NS-3 Network Simulator to support 3D movement.

It implements the new statement:

   $ns at $time $node setdest x2 y2 z2 speed

so that 3D destinations are allowed.

For reference, the statement originally specified in NS2 trace files are:

   $node set X_ x1
   $node set Y_ y1
   $node set Z_ z1
   $ns at $time $node setdest x2 y2 speed
   $ns at $time $node set X_ x1
   $ns at $time $node set Y_ Y1
   $ns at $time $node set Z_ Z1

Update Procedure

Simply copy the files ns2-mobility-helper.h and ns2-mobility-helper.cc into the folder:

./src/mobility/helper/ns2MobilityHelper/

Bug Fix

This update also fixes a bug (existing at least in ns-3.29), where statements of type $ns at $time $node set ... set the specified node's coordinate during parsing of the ns2 trace file, overriding the initial coordinate set with $node set ..., which could also lead to the node deviating from the expected movement pattern.