To visualize, refer to a historical campaign 'Battle of Troy', the walls were built next and in between walls, and it somehow defy the actual representation of fortress built in reality; that's what I want to suggest and share my idea. [All images were in one link at the end, tho].
The current tiling system makes the walls and tower to have a 'gap' when both of them built next to each other:
https://drive.google.com/file/d/1GbBDER ... p=drivesdk
https://drive.google.com/file/d/1GYI5ut ... p=drivesdk
But if to consider wall-tower auto-tiling, things would look better
https://drive.google.com/file/d/1GYftyH ... p=drivesdk
https://drive.google.com/file/d/1GOJgmq ... p=drivesdk
But there are some issues to be considered. What if there were two parallel column of walls and between was a tower? Well, in building tower, before the construction, there were two choices on the bottom-right asking to build a wall-combined tower or stand alone.
https://drive.google.com/file/d/1GJaki- ... p=drivesdk
The default setting when building a tower is a 'Stand Alone', when a player clicked on the same spot as where the green icon was, it means 'Build a Stand Alone Tower' as it was simply tapped to be confirmed.
On the other hand, if a tower was already built and the player wished to renovate the tower to either wall-combined or stand alone, it shall take 1 turn.
https://drive.google.com/file/d/1GAGx3Q ... p=drivesdk
https://drive.google.com/file/d/1G4ip_C ... p=drivesdk
https://drive.google.com/file/d/1Fya-2N ... p=drivesdk
https://drive.google.com/file/d/1GHBqzX ... p=drivesdk
One last thing: Towers or Fortresses built along with walls were taller than the ones built standing alone [which was the default].
And that's all,
P.S. Images were in .png format, thus cannot be attached. All images were Photoshop edited, just for visual reference and it didn't mean to go against the devs' actual design.
Images in the links above were in the same folder:
https://drive.google.com/folderview?id= ... _TWNYGvjOq
