@Override
public void action() {
try {
System.out.println(getBehaviourName() + " msg received");
EQRRoutingCriteria req = (EQRRoutingCriteria) message.getContentObject();
EQRRoutingResult res = null;
ACLMessage reply = message.createReply();
try {
System.out.println(getBehaviourName() + " Requesting route from server");
res = ((GraphHopperServer) router).setCriteria(req).requestRouting().getRoutingResult();
reply.setPerformative(ACLMessage.INFORM);
} catch (EQRException e) {
System.out.println(getBehaviourName() + "Error when requesting route...");
e.getMessage();
res = new EQRRoutingError();
reply.setPerformative(ACLMessage.INFORM); /*
* TODO: Change this
* later
*/
} finally {
System.out.println("Routing Behaviour: Request completed....Sending reply");
reply.setContentObject(res);
myAgent.send(reply);
}
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
protected ACLMessage handleCfp(ACLMessage cfp)
throws RefuseException, FailureException, NotUnderstoodException {
ACLMessage reply = cfp.createReply();
reply.setPerformative(ACLMessage.PROPOSE);
if (myAgent.getClass() == AGV.class) {
try {
if (cfp.getContentObject().getClass() == Cfp.class)
reply = getAgvResponseMessage(reply, (Cfp) cfp.getContentObject(), (AGV) myAgent);
} catch (UnreadableException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return null;
}
} else if (myAgent.getClass() == Machine.class) {
try {
reply = getMachineMessageContent(reply, (Cfp) cfp.getContentObject());
} catch (UnreadableException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return null;
}
}
return reply;
}
@Override
protected ACLMessage handleAcceptProposal(ACLMessage cfp, ACLMessage propose, ACLMessage accept) {
// TODO Handle the accept
Cfp content = null;
try {
content = (Cfp) accept.getContentObject();
} catch (UnreadableException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// System.out.println(myAgent.getLocalName() + ": proposta aceite:" +
// propose.getConversationId() + " content = " + content.getOrigin().getLocalName() + " " +
// content.getDestination().getLocalName() + " " + content.getAgv().getLocalName());
ACLMessage reply = accept.createReply();
reply.setPerformative(ACLMessage.INFORM);
if (myAgent.getClass() == AGV.class) {
AGV a = (AGV) myAgent;
AgvTransport t = new AgvTransport((AGV) myAgent, content);
a.setTransportBehaviour(t);
a.addBehaviour(new AgvTransport(a, content));
}
return reply;
}
// #APIDOC_EXCLUDE_BEGIN
public static void notifyFailureToSender(ACLMessage msg, String sender, String error) {
if (myFrontEnd != null) {
// Send back a failure message
try {
Iterator it = msg.getAllReceiver();
while (it.hasNext()) {
AID receiver = (AID) it.next();
// If this receiver is local, the message has certainly been delivered
// successfully --> Do not send any FAILURE back for this receiver
if (myFrontEnd.getLocalAgent(receiver.getLocalName()) == null) {
ACLMessage failure = msg.createReply();
failure.setPerformative(ACLMessage.FAILURE);
failure.setSender(myFrontEnd.getAMS());
failure.setLanguage(FIPANames.ContentLanguage.FIPA_SL);
String content = "( (action " + sender;
content = content + " (ACLMessage) ) (MTS-error " + receiver + " \"" + error + "\") )";
failure.setContent(content);
myFrontEnd.messageIn(failure, sender);
}
}
} catch (Exception e1) {
logger.log(Logger.SEVERE, "Error delivering FAILURE message.", e1);
}
}
}
protected ACLMessage prepareResponse(ACLMessage msg)
throws NotUnderstoodException, RefuseException {
boolean agreed = false;
ContentElement content;
Concept action = null;
System.out.println("Message Received");
try {
content = myAgent.getContentManager().extractContent(msg);
action = ((Action) content).getAction();
if (action instanceof AssignPowerRequest) {
System.out.println("Received AssignPowerRequest");
agreed = true;
} else if (action instanceof BeginPowerTransitionRequest) {
System.out.println("Received BeginPowerTransitionRequest");
agreed = true;
} else {
System.out.println("Received AnotherAction, but will not perform it");
agreed = false;
}
} catch (Exception e) {
e.printStackTrace();
}
if (agreed) {
ACLMessage agree = msg.createReply();
agree.setPerformative(ACLMessage.AGREE);
System.out.println("Sent AGREE");
return agree;
} else {
throw new RefuseException("unknown operation");
}
}
@Override
public int onEnd() {
// send to the seller. request was firstly sent by him
ACLMessage reply = request.createReply();
reply.setContent("the winner is:");
reply.setPerformative(ACLMessage.INFORM); // depending if it is failure or ...
myAgent.send(reply);
return 0;
}
protected ACLMessage prepareResultNotification(ACLMessage request, ACLMessage response) {
if (request.getOntology().equals("request-ids")) return handleTourGuideRequest(request);
else if (request.getOntology().equals("get-item-information"))
return handleProfilerRequest(request);
else {
ACLMessage informDone = request.createReply();
informDone.setPerformative(ACLMessage.NOT_UNDERSTOOD);
return informDone;
}
}
public ACLMessage handleCfpWithFeedback(ACLMessage newCFP) {
// receives the content object (a counter proposal)
ProposalEvaluation feedback = null;
// extract proposal from the aclmessage
try {
ContentElement ce = myAgent.getContentManager().extractContent(newCFP);
if (ce instanceof ProposalEvaluation) {
feedback = (ProposalEvaluation) ce;
}
} catch (Codec.CodecException cex) {
cex.printStackTrace();
} catch (OntologyException oe) {
oe.printStackTrace();
}
if (itemMapping != null) { // using a mapped item - translate proposal into own ontology
feedback = ((EnterpriseAgent) myAgent).translateToOwnItemOntology(feedback, itemMapping);
}
// prepares response
ACLMessage response = newCFP.createReply();
Proposal newProposal;
if (!((EnterpriseAgent) myAgent).isUseQNegotiationStrategy()) {
newProposal = createCounterProposal(feedback, need, competence);
} else {
newProposal =
qNegotiationStrategies
.get(competence.getType())
.createCounterProposal(getNegotiationId(), feedback, need, competence);
}
if (newProposal != null) {
if (itemMapping
!= null) { // using a mapped item - translate proposal back to the foreign ontology
newProposal =
((EnterpriseAgent) myAgent).translateToForeignItemOntology(newProposal, itemMapping);
}
response.setPerformative(ACLMessage.PROPOSE);
try {
myAgent.getContentManager().fillContent(response, newProposal);
} catch (OntologyException oe) {
oe.printStackTrace();
} catch (Codec.CodecException cex) {
cex.printStackTrace();
}
} else {
response.setPerformative(ACLMessage.REFUSE);
}
return response;
}
void replyNotUnderstood(ACLMessage msg) {
// -----------------------------------------
try {
ContentElement content = getContentManager().extractContent(msg);
ACLMessage reply = msg.createReply();
reply.setPerformative(ACLMessage.NOT_UNDERSTOOD);
getContentManager().fillContent(reply, content);
send(reply);
System.out.println("Not understood!");
} catch (Exception ex) {
ex.printStackTrace();
}
}
protected void handleNotUnderstood(ContentException ce, ACLMessage msg) {
myLogger.log(
Logger.WARNING,
"Agent "
+ myAgent.getName()
+ " - Error decoding "
+ ACLMessage.getPerformative(msg.getPerformative())
+ " message. Sender is "
+ msg.getSender().getName(),
ce);
if (performativesRequiringReply.contains(msg.getPerformative())) {
ACLMessage reply = msg.createReply();
reply.setPerformative(ACLMessage.NOT_UNDERSTOOD);
myAgent.send(reply);
}
}
protected void handleUnsupported(Object keyCel, ACLMessage msg) {
myLogger.log(
Logger.WARNING,
"Agent "
+ myAgent.getName()
+ " - Unsupported content-element "
+ keyCel.getClass().getName()
+ ". Sender is "
+ msg.getSender().getName());
if (performativesRequiringReply.contains(msg.getPerformative())) {
ACLMessage reply = msg.createReply();
reply.setPerformative(ACLMessage.REFUSE);
reply.setContent(
"((" + ExceptionVocabulary.UNSUPPORTEDACT + " " + keyCel.getClass().getName() + "))");
myAgent.send(reply);
}
}
protected void handleServingFailure(Throwable t, Object cel, ACLMessage msg) {
myLogger.log(
Logger.SEVERE,
"Agent "
+ myAgent.getName()
+ " - Unexpected error serving content-element "
+ cel.getClass().getName()
+ ". Sender is "
+ msg.getSender().getName(),
t);
if (performativesRequiringReply.contains(msg.getPerformative())) {
ACLMessage reply = msg.createReply();
reply.setPerformative(ACLMessage.FAILURE);
reply.setContent("((" + ExceptionVocabulary.INTERNALERROR + " \"" + t + "\"))");
myAgent.send(reply);
}
}
public void action() { // listen to incomming CFP from storageAgents
MessageTemplate mt = MessageTemplate.MatchPerformative(ACLMessage.CFP);
ACLMessage msg = myAgent.receive(mt);
/*System.out.println("REQUEST RECEIVED");
System.out.println(msg);*/
if (msg != null) { // only respond to CFP messages
// CFP Message received. Process it
// System.out.println("Got request");
String requestedLocation = msg.getContent();
ACLMessage reply = msg.createReply(); // add the sender as
// recipient
Integer x =
Integer.parseInt(
requestedLocation.substring(
0, requestedLocation.lastIndexOf(','))); // parse the x of
// product
Integer y =
Integer.parseInt(
requestedLocation.substring(
requestedLocation.lastIndexOf(',') + 1,
requestedLocation.length())); // parse the y of product
Integer price = calculatePathCost(new Point(x, y));
if (holdingItem.x == x && holdingItem.y == y) { // robot is
// carrying the
// requested
// item
price = 1;
}
if (price != null) {
reply.setPerformative(ACLMessage.PROPOSE);
reply.setContent(String.valueOf(price.intValue()));
// System.out.println(getAID().getName() + ": My cost is " +
// price + ". To get to location: " +x + ","+y);//debugging
// purpose
} else {
reply.setPerformative(ACLMessage.REFUSE);
reply.setContent("Pathplanning error");
}
myAgent.send(reply);
} else {
block();
}
}
protected ACLMessage prepareResultNotification(ACLMessage request, ACLMessage response) {
System.out.println(controller.getLocalName() + ": Replying with parameters");
ACLMessage inform = request.createReply();
inform.setPerformative(ACLMessage.INFORM);
// send APS parameters
try {
// TODO Check if myParams has been filled
myAgent.getContentManager().fillContent(inform, controller.getMyParams());
// subscribing to the Power Producer for daily plans commands
myAgent.addBehaviour(new PowerPlansSubscriptionBehaviour(controller, request.getSender()));
} catch (CodecException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (OntologyException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return inform;
}
public void action() {
try {
ContentElement content = getContentManager().extractContent(query);
Information info = (Information) ((Action) content).getAction();
Object obj = processInformation(info);
if (obj == null) replyNotUnderstood(query);
else {
ACLMessage reply = query.createReply();
reply.setPerformative(ACLMessage.INFORM);
Result result = new Result((Action) content, obj);
getContentManager().fillContent(reply, result);
send(reply);
System.out.println("Information processed.");
}
} catch (Exception ex) {
ex.printStackTrace();
}
}
public void action() {
try {
ContentElement content = getContentManager().extractContent(request);
CreateAccount ca = (CreateAccount) ((Action) content).getAction();
Account acc = new Account();
String id = generateId();
acc.setId(id);
acc.setName(ca.getName());
Result result = new Result((Action) content, acc);
ACLMessage reply = request.createReply();
reply.setPerformative(ACLMessage.INFORM);
getContentManager().fillContent(reply, result);
send(reply);
accounts.put(id, acc);
operations.put(id, new ArrayList());
System.out.println("Account [" + acc.getName() + " # " + acc.getId() + "] created!");
} catch (Exception ex) {
ex.printStackTrace();
}
}
public void action() {
try {
ContentElement content = getContentManager().extractContent(request);
CreatePreferences cp = (CreatePreferences) ((Action) content).getAction();
for (int i = 0; i < artifacts.size(); i++) {
Artifact a = (Artifact) artifacts.get(i);
if ((a.getGenre().equals(cp.getGenre())) || (a.getCreator().equals(cp.getCreator()))) {
l.add(a);
}
}
// System.out.println("Tour-Guide: " + l);
Result result = new Result((Action) content, l);
ACLMessage reply = request.createReply();
reply.setPerformative(ACLMessage.INFORM);
getContentManager().fillContent(reply, result);
send(reply);
} catch (Exception ex) {
ex.printStackTrace();
}
}
protected ACLMessage prepareResultNotification(ACLMessage msg, ACLMessage response)
throws FailureException {
boolean performed = false;
ContentElement content;
Concept action = null;
System.out.println("pRN");
try {
content = myAgent.getContentManager().extractContent(msg);
action = ((Action) content).getAction();
if (action instanceof AssignPowerRequest) {
AssignPowerRequest apr = (AssignPowerRequest) action;
System.out.println("Performing AssignPowerRequest");
System.out.println("Requester assigned power: " + apr.getAssignedPower());
if (windTurbine.setAssignedPower(apr.getAssignedPower())) {
System.out.println("Check passed, power assigned");
performed = true;
} else {
System.out.println("Out of bounds, power not assigned");
performed = false;
}
}
if (action instanceof BeginPowerTransitionRequest) {
BeginPowerTransitionRequest bptr = (BeginPowerTransitionRequest) action;
boolean isOk = true;
System.out.println("Performing BeginPowerTransitionRequest");
if (bptr.getAssignedPowerIsValid()) {
System.out.println("Requester assigned power: " + bptr.getAssignedPower());
if (windTurbine.setAssignedPower(bptr.getAssignedPower())) {
System.out.println("Check passed, power assigned");
} else {
System.out.println("Out of bounds, power not assigned");
isOk = false;
}
} else {
System.out.println("Requester did not assigned new power");
}
if (isOk) {
windTurbine.change_power();
}
performed = isOk;
}
} catch (Exception e) {
e.printStackTrace();
}
if (performed) {
ACLMessage inform = msg.createReply();
Message sm = new Message();
TimeDelay td = new TimeDelay();
td.setTime(windTurbine.time_delay());
System.out.println(
"Agent "
+ myAgent.getLocalName()
+ ": Action successfully performed, time delay is "
+ windTurbine.time_delay());
sm.setMsg(td);
try {
myAgent.getContentManager().fillContent(inform, new Action(msg.getSender(), sm));
} catch (CodecException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (OntologyException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
inform.setPerformative(ACLMessage.INFORM);
return inform;
} else {
throw new FailureException("out of bounds");
}
}
/**
* Handles a CFP message. This method is invoked when the first CFP is received. In this
* implementation, the need is checked against the competence actually provided by this agent.
* If it is there, <code>createStartingProposal</code> is used to generate a proposal.
*
* @param cfp The CFP message received
*/
public ACLMessage handleFirstCfp(ACLMessage cfp) {
ACLMessage response = cfp.createReply();
try {
ContentElement ce = myAgent.getContentManager().extractContent(cfp);
CompetenceCall competenceCall = (CompetenceCall) ce;
AID requesterAgent = competenceCall.getRequester();
if (((EnterpriseAgent) myAgent).getNumberOfActiveContracts()
> ((EnterpriseAgent) myAgent).MAX_NUMBER_OF_ACTIVE_CONTRACTS) {
response.setPerformative(ACLMessage.REFUSE);
response.setContent("refused...");
} else {
need = competenceCall.getNeed();
competence = ((EnterpriseAgent) myAgent).findCompetence(need, requesterAgent);
itemMapping = ((EnterpriseAgent) myAgent).getItemMapping(need, requesterAgent);
if (itemMapping != null) { // using a mapped item - translate need into own ontology
need =
((EnterpriseAgent) myAgent)
.translateToOwnItemOntology(need, requesterAgent, itemMapping);
}
if (competence != null) {
if (((EnterpriseAgent) myAgent)
.decideOnEnteringNegotiation(competenceCall, competence)) {
// lets go for it!
// create the starting proposal
Proposal proposal = createStartingProposal(need, competence);
if (itemMapping
!= null) { // using a mapped item - translate proposal into foreign ontology
proposal =
((EnterpriseAgent) myAgent)
.translateToForeignItemOntology(proposal, itemMapping);
}
myAgent.getContentManager().fillContent(response, proposal);
response.setPerformative(ACLMessage.PROPOSE);
if (((EnterpriseAgent) myAgent).isUseQNegotiationStrategy()) {
if (!qNegotiationStrategies.containsKey(competence.getType())) {
qNegotiationStrategies.put(competence.getType(), new QNegotiationStrategy());
}
}
} else {
// not negotiating
response.setPerformative(ACLMessage.REFUSE);
}
} else {
response.setPerformative(ACLMessage.REFUSE);
}
}
} catch (OntologyException oe) {
oe.printStackTrace();
response.setPerformative(ACLMessage.REFUSE);
} catch (Codec.CodecException ce) {
ce.printStackTrace();
response.setPerformative(ACLMessage.REFUSE);
}
return response;
}
public void action() { // confirm that this agent will pick up the item
MessageTemplate mt = MessageTemplate.MatchPerformative(ACLMessage.ACCEPT_PROPOSAL);
ACLMessage msg = myAgent.receive(mt);
if (msg != null) { // this agent is chosen to pick up the item
// ACCEPT_PROPOSAL Message received. Process it
String requestedLocation = msg.getContent();
String[] locs = requestedLocation.split(":");
String[] locItem = locs[0].split(",");
Integer itemX = Integer.parseInt(locItem[0]);
Integer itemY = Integer.parseInt(locItem[1]);
String[] locStor = locs[1].split(",");
Integer storageAgentX = Integer.parseInt(locStor[0]);
Integer storageAgentY = Integer.parseInt(locStor[1]);
/*Integer itemX = Integer.parseInt(requestedLocation.substring(0,
requestedLocation.indexOf(',', 1)));
Integer itemY = Integer.parseInt(requestedLocation.substring(
requestedLocation.indexOf(',', 1) + 1,
requestedLocation.indexOf(':', 1)));
Integer storageAgentX = Integer.parseInt(requestedLocation
.substring(requestedLocation.indexOf(':', 1) + 1,
requestedLocation.indexOf(',', 2)));
Integer storageAgentY = Integer.parseInt(requestedLocation
.substring(requestedLocation.indexOf(',', 2) + 1,
requestedLocation.length()));*/
ACLMessage reply = msg.createReply();
reply.setPerformative(ACLMessage.INFORM);
/*System.out.println(getAID().getName()
+ " will pick up the item at " + itemX + "," + itemY
+ " and bring it to storage agent: " + (storageAgentX)
+ "," + storageAgentY);*/
myAgent.send(reply);
boolean isAlreadyGoingThere = false;
for (int i = 0; i < travelPoints.size(); i++) {
if (travelPoints.get(i).x == itemX && travelPoints.get(i).y == itemY) {
isAlreadyGoingThere = true;
}
}
if ((holdingItem.x == itemX && holdingItem.y == itemY)) { // robot
// is
// carrying
// the
// requested
// item
if (nextDestination.get(0) == ITEMDROPDOWN) // stop dropdown
// go deliver
// the item
{
travelPoints.remove(0);
nextDestination.remove(0);
travelPoints.add(0, new Point(storageAgentX - 11, storageAgentY));
travelPoints.add(1, new Point(storageAgentX - 1, storageAgentY));
travelPoints.add(2, new Point(storageAgentX - 1, storageAgentY - 1));
travelPoints.add(3, new Point(storageAgentX - 11, storageAgentY - 1));
travelPoints.add(4, new Point(itemX, itemY));
nextDestination.add(0, STORAGEAGENT);
nextDestination.add(1, STORAGEAGENT);
nextDestination.add(2, ITEMDROPDOWN);
nextDestination.add(3, ITEMDROPDOWN);
nextDestination.add(4, ITEMDROPDOWN);
} else if (nextDestination.get(0) == STORAGEAGENT) {
System.out.print(travelPoints.size());
travelPoints.remove(4);
nextDestination.remove(4);
travelPoints.add(4, new Point(storageAgentX - 11, storageAgentY));
travelPoints.add(5, new Point(storageAgentX - 1, storageAgentY));
travelPoints.add(6, new Point(storageAgentX - 1, storageAgentY - 1));
travelPoints.add(7, new Point(storageAgentX - 11, storageAgentY - 1));
travelPoints.add(8, new Point(itemX, itemY));
nextDestination.add(4, STORAGEAGENT);
nextDestination.add(5, STORAGEAGENT);
nextDestination.add(6, ITEMDROPDOWN);
nextDestination.add(7, ITEMDROPDOWN);
nextDestination.add(8, ITEMDROPDOWN);
} else if (nextDestination.get(0) == ITEMPICKUP) {
// at some unknown time, the robot agent has already planned to pick up the item
travelPoints.remove(4);
nextDestination.remove(4);
travelPoints.add(4, new Point(storageAgentX - 11, storageAgentY));
travelPoints.add(5, new Point(storageAgentX - 1, storageAgentY));
travelPoints.add(6, new Point(storageAgentX - 1, storageAgentY - 1));
travelPoints.add(7, new Point(storageAgentX - 11, storageAgentY - 1));
travelPoints.add(8, new Point(itemX, itemY));
nextDestination.add(4, STORAGEAGENT);
nextDestination.add(5, STORAGEAGENT);
nextDestination.add(6, ITEMDROPDOWN);
nextDestination.add(7, ITEMDROPDOWN);
nextDestination.add(8, ITEMDROPDOWN);
}
} else if (isAlreadyGoingThere) {
boolean isInsert = false;
for (int i = 0; i < travelPoints.size(); i++) {
if (isInsert == false) {
if (travelPoints.get(i).x == itemX && travelPoints.get(i).y == itemY) {
isInsert = true;
// travelPoints.remove(4);
travelPoints.add(i + 5, new Point(storageAgentX - 11, storageAgentY));
nextDestination.add(i + 5, STORAGEAGENT);
travelPoints.add(i + 6, new Point(storageAgentX - 1, storageAgentY));
nextDestination.add(i + 6, STORAGEAGENT);
travelPoints.add(i + 7, new Point(storageAgentX - 1, storageAgentY - 1));
nextDestination.add(i + 7, ITEMDROPDOWN);
travelPoints.add(i + 8, new Point(storageAgentX - 11, storageAgentY - 1));
nextDestination.add(i + 8, ITEMDROPDOWN);
}
}
}
} else {
travelPoints.add(new Point(itemX, itemY));
travelPoints.add(new Point(storageAgentX - 11, storageAgentY));
travelPoints.add(new Point(storageAgentX - 1, storageAgentY));
travelPoints.add(new Point(storageAgentX - 1, storageAgentY - 1));
travelPoints.add(new Point(storageAgentX - 11, storageAgentY - 1));
travelPoints.add(new Point(itemX, itemY));
nextDestination.add(ITEMPICKUP);
nextDestination.add(STORAGEAGENT);
nextDestination.add(STORAGEAGENT);
nextDestination.add(ITEMDROPDOWN);
nextDestination.add(ITEMDROPDOWN);
nextDestination.add(ITEMDROPDOWN);
// nextDestination.add(ITEMDROPDOWN);
}
} else {
block();
}
}
@Override
public void action() {
if (queenNo == 0) {
step = 0;
} else {
step = 1;
}
while (true) {
switch (step) {
case 0:
if (col != N) {
isConsistent = enumerate(queenNo);
msg = new ACLMessage(ACLMessage.INFORM);
msg.addReceiver(QueenAgents[0]);
// q[0]=4;
msg.setContent("" + q[0]);
msg.setSender(myAgent.getAID());
myAgent.send(msg);
step = 2;
// System.out.println("The queen positions is " + q[0]);
} else {
block();
}
break;
case 1: // message from previous queen...implies
mt = MessageTemplate.MatchPerformative(ACLMessage.INFORM);
msg = myAgent.receive(mt);
if (msg != null) {
receivedStr = msg.getContent(); // receive the column postions of the previous queens
for (int i = 0; i < receivedStr.length(); i++) {
q[i] =
Integer.parseInt(
receivedStr.substring(i, i + 1)); // put the queens in their positions
}
isConsistent = enumerate(queenNo);
if (isConsistent) { // queen is placed in a valid position
msg1.setPerformative(ACLMessage.INFORM);
msg1.addReceiver(QueenAgents[1]); // add next queen as the receiver
for (int i = 0;
i < receivedStr.length() + 1;
i++) // concatinate previous queen positions to send to the next queen
{
str1 = str1.concat("" + q[i]);
}
msg1.setSender(myAgent.getAID());
msg1.setContent(str1);
myAgent.send(msg1); // send message to the next agent
step = 2;
} else { // create a refuse message
// if(queenNo==N-1)System.out.println(" last queen cant be here");
ACLMessage reply = msg.createReply();
reply.setPerformative(ACLMessage.REFUSE);
reply.setSender(myAgent.getAID());
myAgent.send(reply);
col = 0;
}
str1 = "";
} else {
block();
}
break;
case 2:
mt = MessageTemplate.MatchPerformative(ACLMessage.REFUSE);
msg = myAgent.receive(mt);
if (msg != null) {
if (queenNo == 0) {
// System.out.println("The queen positions was " + q[0]);
step = 0;
break;
}
if (enumerate(queenNo)) { // queen is placed in a valid position
msg1.setPerformative(ACLMessage.INFORM);
msg1.addReceiver(QueenAgents[1]); // add next queen as the receiver
for (int i = 0;
i < receivedStr.length() + 1;
i++) // concatinate previous queen positions to send to the next queen
{
str1 = str1.concat("" + q[i]);
}
msg1.setContent(str1);
msg1.setSender(myAgent.getAID());
myAgent.send(msg1); // send message to the next agent
str1 = "";
} else { // create a refuse message
ACLMessage reply = new ACLMessage(ACLMessage.REFUSE);
reply.addReceiver(QueenAgents[0]); // here is my suspecion
col = 0;
step = 1;
reply.setContent(receivedStr);
reply.setSender(myAgent.getAID());
myAgent.send(reply);
}
} else {
block();
}
break;
}
}
}