Summary: [River|Road] move_mode "Relaxed" assumes river/road
on adjacent tile
                 Project: Freeciv
            Submitted by: cazfi
            Submitted on: Fri 01 Feb 2013 06:12:04 PM EET
                Category: general
                Severity: 3 - Normal
                Priority: 5 - Normal
                  Status: None
             Assigned to: None
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
        Operating System: None
         Planned Release: 



Noticed while porting river_move_mode as road.move_mode in patch #3637:

Relaxed mode let's one to easily move diagonally from river tile to river
tile, but with double move cost as if two cardinal moves were made. This
checks river from original and target tiles only. It's possible that there's
no connection between the two but they are two separate rivers, either their
starting points or turning away from each other. If the tile through which
unit is considered to move has no river, applying cost based on river cost
does not make sense.

patch #3637 makes road move_mode implementation identical to river_move_mode,
so similar bug makes it to road.move_mode too.


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