How to implement a route plotter on a building map?

Question

Android

I want to draw a map of an office building with office numbers and write a route plotter for this building, for example, you are standing on the 1st floor at office 101, you need to go to the 4th floor at office 405. The program shows the route.

Answer 1

Well, you draw a graph along with the map, save the coordinates of offices in the graph, look for the path in the graph. Business something but 5 minutes.

Answer 2

Dijkstra's algorithm