[pnpgm] plot direction

[Alex Koponen]

Z'leyra will plot the direction that the flier is going in by memorizing 
landmarks. As she isn't as fast as the flier she will turn back after 
losing sight of the flier in the distance...unless the flier lands 
first, in which case she will memorize where it landed and hurry back to 
the party.

[Since the flier is about pmr 3 faster it will take about as long to 
lose sight as it would a take normal human to run far enough to lose 
sight of an object the size of the flier down a long very straight road. 
Note that eagles should have good eyesight.]