Building Buildings Prototype (Project 2, 2018)

Prototype for project 2 (2018), codename: Building Buildings.

Development log

Controls
Left mouse button = Select room, Build room
Right mouse button = Remove room
Mousewheel (or Left Shift & Left Control) = Change current floor

Instructions

Fulfill the objectives in each level.
Status panel shows total resources used and produced, even if there are unusable rooms at the moment.
Room issues are shows with warning icons. Resolve all warnings in order to complete the level.
3 levels in total.

Ideas and other comments are appreciated.