/**
* Adds a hook to the HookManager. You can associate more than one hook with a given message type
* which will be returned in order by getHooks().
*
* @param msgType the message type to match
* @param hook the hook to be called for matching messages
* @see EnginePlugin#handleMessageImpl
*/
public void addHook(MessageType msgType, Hook hook) {
lock.lock();
try {
List<Hook> hookList = hooks.get(msgType);
if (hookList == null) {
hookList = new LinkedList<Hook>();
hookList.add(hook);
hooks.put(msgType, hookList);
} else {
hookList = new LinkedList<Hook>(hookList);
hookList.add(hook);
hooks.put(msgType, hookList);
}
} finally {
lock.unlock();
}
}
/**
* Track union of perceived objects and keep filter in-sync. The filter must be a {@link
* PerceptionFilter} and the message must be a {@link PerceptionMessage}.
*
* @param triggeringMessage The matched message.
* @param triggeringFilter The matched filter.
* @param agent The local message agent.
*/
public synchronized void trigger(
Message triggeringMessage, IFilter triggeringFilter, MessageAgent agent) {
PerceptionMessage message = (PerceptionMessage) triggeringMessage;
List<ObjectNote> gainObjects = message.getGainObjects();
List<ObjectNote> lostObjects = message.getLostObjects();
if (gainObjects != null) {
List<PerceptionFilter.TypedSubject> newSubjects =
new ArrayList<PerceptionFilter.TypedSubject>(gainObjects.size());
for (ObjectNote gain : gainObjects) {
IntHolder refCount = objectRefs.get(gain.subjectOid);
if (refCount == null) {
objectRefs.put(gain.subjectOid, new IntHolder(1));
newSubjects.add(new PerceptionFilter.TypedSubject(gain.subjectOid, gain.objectType));
} else refCount.count++;
}
if (newSubjects.size() > 0) {
if (Log.loggingDebug) Log.debug("PerceptionTrigger adding " + newSubjects.size());
filter.addSubjects(newSubjects);
}
}
if (lostObjects == null) return;
List<Long> freeOids = new ArrayList<Long>(lostObjects.size());
for (ObjectNote lost : lostObjects) {
IntHolder refCount = objectRefs.get(lost.subjectOid);
if (refCount == null) Log.error("PerceptionTrigger: duplicate lost " + lost.subjectOid);
else if (refCount.count == 1) {
objectRefs.remove(lost.subjectOid);
freeOids.add(lost.subjectOid);
} else refCount.count--;
}
if (freeOids.size() > 0) {
if (Log.loggingDebug) Log.debug("PerceptionTrigger removing " + freeOids.size());
filter.removeSubjects(freeOids);
}
}
/** for client display: current state */
public List<String> getObjectiveStatus() {
lock.lock();
try {
List<String> l = new LinkedList<String>();
Iterator<CollectionGoalStatus> iter = goalsStatus.iterator();
while (iter.hasNext()) {
CollectionGoalStatus status = iter.next();
String itemName = status.getTemplateName();
int numNeeded = status.targetCount;
int cur = Math.min(status.currentCount, numNeeded);
String objective = itemName + ": " + cur + "/" + numNeeded;
l.add(objective);
}
return l;
} finally {
lock.unlock();
}
}