variable raylength for the rpath filter. same 0.001 for players to stop recalculating a path when jumping, but bump anything they're mounted to to a 2 unit check
bit of work towards parallel parking. or at least not ending up arcing back and forth infinitely in an arc
in order to call derivatives of AIControllerData datablocks *without* requiring an accompanying AIController subclass as well, leverage the fastdelegate system for our resolver callbacks
additionally, don't try and repath in mid air
aigoal: initialize inange/infirinrange to false. use those to filter callbacks
