Toranks
commented
1 year ago This part tries to prevent the unit from advancing to a unit that cannot move on the terrain it is located on. An object is not required to edit them, since the change is of immediate use, I simply delete the object that removes them all. (then all advancements are restored), and the [modify_unit] advances_to= takes care of temporarily overwriting the advances without the new unit types that can't fly.
This resolves #36 and resolves #37
Needs https://github.com/inferno8/wesnoth-To_Lands_Unknown/pull/19