Respect world size in OSM movement

src/de/tud/kom/p2psim/impl/topology/DefaultTopologyComponent.java

@@ -284,6 +284,9 @@ public class DefaultTopologyComponent implements TopologyComponent {
 	@Override
 	public void requestLocationUpdates(LocationRequest request,
 			LocationListener listener) {
+		if (openRequests.containsKey(listener)) {
+			throw new AssertionError("This LocationListener is already in use.");
+		}
 		LocationRequestImpl req = (LocationRequestImpl) request;
 		openRequests.put(listener, req);
 		req.immunizeAndStart(listener);

src/de/tud/kom/p2psim/impl/topology/movement/local/RealWorldStreetsMovement.java

@@ -164,6 +164,10 @@ public class RealWorldStreetsMovement extends AbstractLocalMovementStrategy {
 	private PositionVector transformGPSWindowToOwnWorld(double lat, double lon) {
 		double x = worldDimensions.getX() * (lon - lonLeft)/(lonRight - lonLeft);
 		double y = worldDimensions.getY() - worldDimensions.getY() * (lat - latLeft)/(latRight - latLeft);
+		x = Math.max(0, x);
+		x = Math.min(worldDimensions.getX(), x);
+		y = Math.max(0, y);
+		y = Math.min(worldDimensions.getY(), y);
 		return new PositionVector(x, y);
 	}
 	

src/de/tud/kom/p2psim/impl/topology/movement/modularosm/ModularMovementModel.java

@@ -246,6 +246,11 @@ public class ModularMovementModel implements MovementModel, EventHandler {
 				.nextPosition(ms, destination);
 		if (either.hasLeft()) {
 			ms.getRealPosition().replace(either.getLeft());
+			/*
+			 * Check for negative or out of bound coordinates!
+			 */
+			assert ms.getRealPosition().getX() >= 0.0 && ms.getRealPosition().getX() <= Binder.getComponentOrNull(Topology.class).getWorldDimensions().getX();
+			assert ms.getRealPosition().getY() >= 0.0 && ms.getRealPosition().getY() <= Binder.getComponentOrNull(Topology.class).getWorldDimensions().getY();
 			notifyPositionChange(ms);
 		} else {
 			transition.reachedAttractionPoint(ms);