Completely re-coded the base of wall building system
The wall building button now moved next to other building button, more user friendly
Temporarily removed the restriction of wall must be build next to wall, but all building is still required to build next to another building
Now:
Note: Since I was facing some technical issue while adding more types of buildings, I decided to re-write the code of the building system. You might not see any changes in game, but hundreds lines of code are modified. So I would like to spend 2-3 days testing it, making sure it is stable and friendly for adding new content in the future before I release new gameplay related content.