What buildings are for..

This thread is to explain what is the point of items. I will edit this in the future. Some buildings/items are going to be in the next update.

Campfire:
Cost: 25 wood
Can AI build it: yes
Use: none
Future: will be useful one day. (trust me)

Grain building:
Cost: 200 wood
Can AI build it: no
Use: Increases max food + lowed food decay rate
Future: upgrades maybe idk

Other I will talk about later:
Wood Cabin
Wood tent
Stone Cabin
Green house thing
Stone storage
Wood storage
Barracks