Implement REQUEST_DRIVING_DISTANCE_TO query percept about bdi-abm-integration

[osbornejr]

Hi @dhixsingh I am trying to look into this issue at the moment, the main hurdle I think is in the MatsimModel (~line 480).

I have setup a REQUEST_DRIVING_DISTANCE case that would most likely have two location coordinates as input args-- one that was obtained using REQUEST_LOCATION, and the other coming from the list of evacuation point locations.

But I will need some matsim mechanism to get a travel time estimate between the two locations. Do you know which that would be? I am looking at something like LeastCostPath but am unsure how to implement it.

Or is this kind of thing on the MATSim side best left to Kai?

Cheers

[dhixsingh]

@kainagel is there an easy way to query MATSim for the driving distance (not beeline) between two nodes on the network? I guess we will first want to find the route between the nodes given some routing mode (like freespeed), and then the distance (and maybe also estimated time) covered by that route.

[kainagel]

See 1df1786 and later in queryPercept. Can't say if it will work; please try around a bit with it. One issue is that you need to define the EvacRoutingMode; it will thus return the length associated with the routing mode, not the shortest path by distance. If you need the latter, you/we will need to set up a shortest path router.

[dhixsingh]

Thanks @kainagel. Requiring the EvacRoutingMode is fine. Will try and it out and let you know if we have more questions.

[dhixsingh]

Available since ee66066.

Usage example is here:

bdi-abm-integration/examples/bushfire/src/main/java/io/github/agentsoz/ees/agents/Resident.java

Lines 104 to 106 in ee66066

	double distanceToSafePlace = (double)getQueryPerceptInterface().queryPercept(String.valueOf(getId()),
	PerceptList.REQUEST_DRIVING_DISTANCE_TO, getShelterLocation().getCoordinates());
	writer.println(prefix + "estimated driving distance to shelter accounting for detour is " + String.format("%.1f",distanceToSafePlace/1000) + "km");

Example output from scenarios/mount-alexander-shire/campbells-creek-1/jill.out looks like this:

Time 00286 Resident 0    : received fire alert
Time 00286 Resident 0    : will start driving to shelter in (Castlemaine, coords=252145.230968,5894310.30443) at time 291.0
Time 00405 Resident 0    : is blocked at link 51823
Time 00405 Resident 0    : is currently between locations (321543051, coords=251458.994864993,5892667.574804958) and (60303155, coords=251444.56941373763,5892815.969128571)
Time 00405 Resident 0    : estimated driving distance to shelter accounting for detour is 3.9km
Time 00405 Resident 0    : will reevaluate route to destination (attempt 2 of 5)
Time 00405 Resident 0    : will start driving to shelter in (Castlemaine, coords=252145.230968,5894310.30443) at time 410.0
Time 00848 Resident 0    : arrived at shelter in (Castlemaine, coords=252145.230968,5894310.30443)

/cc @osbornejr