how to Extend a module from inet?

Question

There are n Adhoc nodes that are deployed randomly in field. Because of necessity to a special node I ought to extend new node from AdhocHost and add some parameter like node coordinates.

MySensorNode.ned

import inet.node.inet.AdhocHost;
import inet.node.inet.INetworkNode;

module MySensorNode extends AdhocHost like INetworkNode
{
  parameters:
      @display("bgb=827.48,663.192;bgu=m;i=misc/transmission_anim");
      @class(inet::MySensorNode);
}

MySensorNode.h

#ifndef __INET_MYSENSORNODE_H
#define __INET_MYSENSORNODE_H


namespace inet {

class MySensorNode : public ***????????what should I write here????***
{
   public:
    bool first_init = true;
        MySensorNode();
        virtual ~MySensorNode();
        virtual void initialize(int stage);
        virtual void changecolor();
        virtual void handleMessage(cMessage *msg);
        ?????????others ?????????

};
} // namespace inet
#endif /* __INET_MYSENSORNODE_H */

MySensorNode.cc

#include "MySensorNode.h"
namespace inet {

Define_Module(MySensorNode);


void MySensorNode::initialize(int stage)
{
    if(first_init)
    {
        changecolor();
    }
}

void MySensorNode::changecolor()
{
???????????????????
}


} // namespace inet

as the first part of question, I want to change 5% of nodes' color in initialization. How can I do that?

please mention my mistakes in the codes above. Thx

Well, if you have 100 nodes and you want to change the color of 5%, why not taking the first five nodes (based on the node's ID) and change the color? — thardes2
thank you @thardes2. actually it's the first step for clustering. nodes are deployed randomly and IDs aren't in order , the number of nodes are around 1000, and in the next step I want to choose nodes with more energy as Cluster head and change their color. — bob winter
as the first step yes, It's just a question to learn how to work with ad hoc node. I don't know it. In manual there is just cSimpleModule example but here I extend a module. — bob winter
suppose I add a parameter like xpos to mysensornode module, how can I call it in any method()? — bob winter

thardes2 thardes2 · Accepted Answer · 2018-08-06T10:40:19

If it is just about changing the colour, you need to change the Display String.

You could do it like this in the initialize method of the UDPBasicApp module (stage 1):

getParentModule()->getDisplayString().setTagArg("i", 1, "yellow");

The different tags are described in the OMNeT++ Manual

The AdhocHost is a compound module. Although the C++ class for a compound module can be overridden with the @class property, this is a feature that should probably never be used. Encapsulate the code into a simple module, and add it as a submodule. Read this for more information.

To add it as a submodule, you need to change the compound module. This could be done like this:

module SomeName extends AdhocHost 
{
    submodules:
        mySensorNode: MySensorNode;
}

Then your MySensorNode is a cSimpleModule:

namespace inet {

class MySensorNode : public cSimpleModule
{
   public:
....

There are a lot of examples for this on Stack Overflow and in the INET Framework, e.g. the inet.linklayer.common.WirelessNic

how to Extend a module from inet?

1 Answers