agentdemonstrator.cpp

/***************************************************************************
                    agentdemonstrator.cpp  -  description
                        -------------------
    begin                : nov 29th 2005
    copyright            : (C) 2005-2006 by Duong-Khang NGUYEN
    email                : neoneurone @ users sourceforge net
    author               : Victor STINNER
    
    $Id: agentdemonstrator.cpp 32 2006-08-06 18:59:25Z neoneurone $
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   any later version.                                                    *
 *                                                                         *
 ***************************************************************************/


#include "agentdemonstrator.h"
#include "kernel.h"
#include "message.h"

#define MAX_TTL 15                  

   /*=====================================================================*/
AgentDemonstrator::AgentDemonstrator(Kernel& kernel, Environment& env, int x, int y):
Agent(kernel, env, x, y, ROLE_DEMONSTRATOR)
{
    this->born();       // Warning: see superclass

// OpenCity's specifics
    this->SetGraphicCode( OC_VEHICLE_PICKUP );
}


   /*=====================================================================*/
AgentDemonstrator::~AgentDemonstrator()
{
    if (m_agent_state != AGENT_DIE)
        this->die();        // Warning: see superclass
}


   /*=====================================================================*/
void AgentDemonstrator::processMessage()
{
    static Message msg;

// Process all the messages
    while (!m_messages.empty()) {
        msg = m_messages.front();
        MAS_DEBUG( *this << " processes " << msg );

        if (msg.getType() == Message::MSG_AGENT_DIE)
            m_agent_state = AGENT_DIE;
        m_messages.pop_front();
    }
}


   /*=====================================================================*/
void AgentDemonstrator::born()
{
    m_ttl = MAX_TTL;            // Set m_ttl to maximum time to live
    processMessage();
    Agent::born();              // This set m_agent_state to AGENT_BORN
    m_kernel.registerRole(this, ROLE_DEMONSTRATOR);
    m_agent_state = AGENT_LIVE;
}


   /*=====================================================================*/
void AgentDemonstrator::live()
{
// Process all the received messages
    processMessage();

// Do we need this ?
//  Agent::live();

    if (m_agent_state != AGENT_LIVE)
        return;

    // Little sleep()
    unsigned int m_sleep = 3;
    if ((m_kernel.getStep() % m_sleep) != 0)
        return;

// IF we can not move in more than ttl steps THEN die
    if (!randomMove()) {
        m_ttl--;        // Decrease Time To Live
//debug cout << "Agent: " << getId() << " / TTL: " << m_ttl << endl;
        if (!m_ttl) {
            m_kernel.killAgent(this);
        }
    }
    else {
        m_ttl = MAX_TTL;
    }
}


   /*=====================================================================*/
void AgentDemonstrator::die()
{
    processMessage();
    Agent::die();
    m_kernel.unregisterRole(this, getRole());
}


   /*=====================================================================*/
void AgentDemonstrator::output(std::ostream& os) const
{
    os << "AgentDemonstrator " << getId();
}

---