WIP: More parameters for GH alternative routes

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

@@ -219,8 +219,10 @@ public class RealWorldStreetsMovement extends AbstractLocalMovementStrategy {
 					req.getHints().put(Routing.BLOCK_AREA, blockedAreas);
 				}		
 				if(allowAlternativeRoutes) {
-					req.setAlgorithm(Parameters.Algorithms.ALT_ROUTE);					
-					req.getHints().put(Parameters.Algorithms.AltRoute.MAX_PATHS, "5");
+					// see: https://discuss.graphhopper.com/t/alternative-routes/424/11
+					req.setAlgorithm(Parameters.Algorithms.ALT_ROUTE);			
+					req.getHints().put(Parameters.Algorithms.AltRoute.MAX_WEIGHT, "2.0"); // how much longer can alternatives be?
+					req.getHints().put(Parameters.Algorithms.AltRoute.MAX_PATHS, "5"); // how much alternatives should be returned at max?					
 				}
 				
 				
@@ -247,9 +249,11 @@ public class RealWorldStreetsMovement extends AbstractLocalMovementStrategy {
 						if(random.nextDouble() <= probabilityForAlternativeRoute) {
 							List<PathWrapper> paths = rsp.getAll();
 							
-							System.out.println(paths.size());
 							
-							pointList = rsp.getAll().get(1).getPoints();
+							
+							int pick = random.nextInt(paths.size() - 1) + 1;
+							System.out.println(pick + " / " + paths.size());
+							pointList = rsp.getAll().get(pick).getPoints();
 						}	
 					}