Wall (traversal)

[Hardeep]

I really want the wall to allow your units on top of it and shows the unit on top of the wall when garrisoned, if a melee attacks the wall the wall absorbs the damage but if ranged the unit is affected. Youd need a stairwell in order to get on the wall and off the wall you first have to enter the stairwell, then move on the wall, or any other siege elements that might allow you to scale walls (siege towers)
please implement this if possible, im not sure if this is codable or not