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# txc4.cc

    //
    // This file is part of an OMNeT++/OMNEST simulation example.
    //
    // Copyright (C) 2003-2005 Andras Varga
    //
    // This file is distributed WITHOUT ANY WARRANTY. See the file
    // `license' for details on this and other legal matters.
    //

    #include <stdio.h>
    #include <string.h>
    #include <omnetpp.h>

    class Txc4 : public cSimpleModule
    {
      private:
        int counter;

      protected:
        virtual void initialize();
        virtual void handleMessage(cMessage *msg);
    };

    Define_Module(Txc4);

    void Txc4::initialize()
    {
        // Initialize the counter with the "limit" module parameter, declared
        // in the NED file (tictoc4.ned).
        counter = par("limit");

        if (strcmp("tic", name()) == 0)
        {
            ev << "Sending initial message\n";
            cMessage *msg = new cMessage("tictocMsg");
            send(msg, "out");
        }
    }

    void Txc4::handleMessage(cMessage *msg)
    {
        counter--;
        if (counter==0)
        {
            ev << name() << "'s counter reached zero, deleting message\n";
            delete msg;
        }
        else
        {
            ev << name() << "'s counter is " << counter << ", sending back message\n";
            send(msg, "out");
        }
    }