2.7.1(?) bug: ships taking the longer west trip to the new world for Panama-like colonies.

[albucc]

Hi, everyone.

I don't know if this is only a 2.7.1 thing, but I've found an issue with pathfinding when a ship travels from europe into the new world.

I have this "San Salvador" colony, that can get into europe either from east, or from the west. But from the west is a very long trip, against the very short east trip. Well, the pathfinding from europe is preferring the western route... that takes 4 turns and a much larger sea trip from the continent...

BTW: Does anyone know where the pathfinding code is?
UPDATE: found where the pathfinding code is: CvSelectionGroup::generatePath...

 

[Nightinggale]

I remember something about the map caching distance to nearest Europe plot. This allows ships to pathfind by picking a plot with a lower number than the current one. The problem is that this system doesn't take into account that ships can cross land like in this case. I can't be more specific than this without actually opening the source code, but it should be a hint of which direction to look for such an issue.