How do I make a upgrade shop or building area. As well as a action button.

Help Requests
1

I want to make an upgrading game where you survive on an island and your goal is to build a base. However, I can’t figure out how to make a building option and a button to allow the player to fish, eat, and drink.

2

I Have A 2D building function in my game if you want to check it out

3

https://flowlab.io/game/view/1362583