How did you manage to make palisade vertical and diagonal? There are only horizontal sprites.
What do you mean by palisade?
Wooden palisade, like a wall made out of wooden logs. Palisade is a palisade xd
Use them as sprites, not tiles. Not everything in your game have to be a tile. You place them the way you want. There are some premade chunks but there are also lots of individual logs so you can build the wall at any angle.
