The inflight map has tools listed in it's options, select this and a small tool bar appears, this tool bar includes a protractor to work out your headings. Just click the protractor and then click it on your map waypoint, drag the pointer from the first waypoint to the second and let it go. Then re click on the first waypoint and drag a vertical line up the map, just parallel to a grid line and the drop it. You should then have a number appear at the initial way point, subtract this number from 360 and you will have your heading.
There is also a ruler function that gives you a distance in km between waypoints. With these the cockpit clock, and a steady speed you should be able to nav you way around ok. Obviously there will be variances due to indicated airspeed vs true, and wind/ drift, but hey, rough enough for the bush, don't really want to have to go to the effort of dragging out my old flight computer to play a game
Hope some of the above shite helps
Craig