Apologies for resurrecting this thread; especially as it's my first post. However, with the addition in Alpha 7 of the plane test, would it not be possible to have ranged units garrisonned inside a wall, appear on top of the wall? There's no need for them to be controllable on top of the wall (although it could potentially be possible to move them along walls by having them garrison and de-garrison each wall as they move along to the requested section. Whilst I've yet to look at the code (It was downloading the repo at 21kB/s for much of last night) - it seems there'd be no need to for complex path finding or a 3D co-ordinate system for unit locations with this system. As units would be unable to pass underneath the soldiers garrisonned on the wall, there'd be no need to add 3D co-ordinates for location purposes; as long as the graphics engine is aware that they're garissoned on a wall, and need to be rendered at a different point in space. And path finding could be simply along a straight line between one end of the wall section and another. Selecting a unit on a wall and telling it to move to another section could work by walking it to the end in the direction of movement, de-garrison it, re-garrison it in the next wall and so on until. Selecting a unit on a wall and telling it to move anywhere else on the terrain would simply de-garrison it and give it move orders. (You could perhaps using the path-finding algorithm at this point to determine which side of the wall it should be de-garissoned on.
