can you plz roughly explain how walls will work in reference to defensive bonuses upon incoming attacks? will troops have to accidentally land on a wall to get the bonuses, or will they auto warp to the best possible point of defense for battles? i know you all are working this out and dont like to reveal to many secrets, but as we all set up our cities on a pvp server, this is kind of an important issue to shed some light on Vjaka. thanks in advance!