/*
* Copyright (c) 2005-2010 KOM – Multimedia Communications Lab
*
* This file is part of PeerfactSim.KOM.
*
* PeerfactSim.KOM 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 3 of the License, or
* any later version.
*
* PeerfactSim.KOM is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with PeerfactSim.KOM. If not, see .
*
*/
package de.tud.kom.p2psim.impl.topology.movement.modularosm.transition;
import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import de.tud.kom.p2psim.api.scenario.ConfigurationException;
import de.tud.kom.p2psim.api.topology.Topology;
import de.tud.kom.p2psim.api.topology.movement.SimLocationActuator;
import de.tud.kom.p2psim.impl.topology.movement.modularosm.attraction.BasicAttractionPoint;
import de.tud.kom.p2psim.impl.topology.util.PositionVector;
import de.tudarmstadt.maki.simonstrator.api.Binder;
import de.tudarmstadt.maki.simonstrator.api.Event;
import de.tudarmstadt.maki.simonstrator.api.EventHandler;
import de.tudarmstadt.maki.simonstrator.api.Monitor;
import de.tudarmstadt.maki.simonstrator.api.component.sensor.location.AttractionPoint;
public class InAreaRoamingTransitionStrategy extends AbstractAttractionBasedTransitionStrategy implements EventHandler {
public static enum roamingTransitionState {
ROAMING,
TRANSITION
}
private final static int EVENT_ROAMING_ENDED = 1;
protected Map roamingStates = new LinkedHashMap<>();
private long pauseTimeMin = 0;
private long pauseTimeMax = 0;
@Override
public void addComponent(SimLocationActuator comp) {
this.roamingStates.put(comp, roamingTransitionState.TRANSITION);
AttractionPoint nextAP = getNewAttractionPoint(comp);
updateTargetAttractionPoint(comp, nextAP);
}
@Override
public void reachedAttractionPoint(SimLocationActuator comp) {
// start roaming
if(roamingStates.get(comp) == roamingTransitionState.TRANSITION) {
// schedule the end of the roaming phase, which will make a new transition
Event.scheduleWithDelay(getPauseTime(), this, comp, EVENT_ROAMING_ENDED);
this.roamingStates.put(comp, roamingTransitionState.ROAMING);
}
// roam around the attraction point
roamAroundAttractionPoint(comp);
}
private void roamAroundAttractionPoint(SimLocationActuator comp) {
if(roamingStates.get(comp) == roamingTransitionState.ROAMING) {
AttractionPoint currentAttractionPoint = this.assignments.get(comp);
if(currentAttractionPoint == null) {
System.err.println("AP roaming failed: no AP");
}
if(currentAttractionPoint.getRadius() > 0)
{
notifyListenersOfAssignmentUpdate(comp, currentAttractionPoint);
}
}
}
@Override
public void eventOccurred(Object content, int type) {
assert type == EVENT_ROAMING_ENDED;
SimLocationActuator comp = (SimLocationActuator) content;
this.addComponent(comp);
}
private long getPauseTime() {
return (long) (rnd.nextDouble() * (pauseTimeMax-pauseTimeMin)) + pauseTimeMin;
}
public void setMinPauseTime(long minPauseTime) {
if (minPauseTime < 0) {
throw new ConfigurationException(
"MinPauseTime should be >= 0!");
}
this.pauseTimeMin = minPauseTime;
}
public void setMaxPauseTime(long maxPauseTime) {
if (maxPauseTime < 0) {
throw new ConfigurationException(
"MaxPauseTime should be >= 0!");
}
this.pauseTimeMax = maxPauseTime;
}
private AttractionPoint getNewAttractionPoint(SimLocationActuator component) {
double score = rnd.nextDouble();
List candidates = new LinkedList<>();
for (AttractionPoint ap : attractionPoints) {
if (ap.getWeight() >= score) {
if(lastAssignments.get(component) == null || !ap.equals(lastAssignments.get(component))) {
candidates.add(ap);
}
}
}
if (candidates.isEmpty()) {
candidates.addAll(attractionPoints);
}
AttractionPoint assignment = candidates.get(rnd.nextInt(candidates.size()));
return assignment;
}
private AttractionPoint getNewRoamingPosition(AttractionPoint roamingAP)
{
double apRadius = roamingAP.getRadius();
double x = roamingAP.getLongitudeOrX();
double y = roamingAP.getLatitudeOrY();
double newX = -1;
double newY = -1;
PositionVector destination = null;
int tries = 0;
do
{
double calcRadius = rnd.nextDouble() * apRadius;
double calcAngle = rnd.nextDouble() * 360;
newX = x + Math.sin(calcAngle) * calcRadius;
newY = y + Math.cos(calcAngle) * calcRadius;
destination = new PositionVector(newX, newY);
// Check constraints
if (destination.getX() < 0.0
|| destination.getX() > Binder.getComponentOrNull(Topology.class).getWorldDimensions().getX()
|| destination.getY() < 0.0
|| destination.getY() > Binder.getComponentOrNull(Topology.class).getWorldDimensions().getY())
{
destination = null;
if (tries > 100) {
throw new AssertionError("Unable to find a valid target destination within <100 tries.");
}
}
tries++;
} while (destination == null);
Monitor.log(this.getClass(), Monitor.Level.DEBUG, "Next roaming position is " + newX + " / " + newY);
return new BasicAttractionPoint("ROAMING", destination);
}
}