Tried to convert Firehouse Garden to a Greenhouse and left with disappointment
I don't know if this is a me problem or a current game limitation
Converted the privacy fence to a brick wall, doors to metal doors, roofing I was having difficult with and resorted to building Small Metal Support to place roofing as the option to roof was not showing when I was trying to place it between a corner to get the "Must be supported on at least two sides" annotation with supports in place and without - probably not fully understanding how roofing works, but the sky light frames didn't give me any issues.
Completed the roofing to my knowledge, placed a large heater and it was not heating the room.
I am not sure if I haven't placed the roofing correctly, there is currently limitation with game in regards to building extensions or some reason I am not aware of
CDDA doesn't really have complex heat propagation because it would grind processing down. The heater may only slightly heat a 4x area and that's it. Or that's how it was with my vehicle heater.
You'll notice the same "hot air" entities on the surrounding squares that you see with fires.
Thanks for the answer, it is something I didn't know about vehicle heating - useful if I every decided to make a mobile crawler base one day( still stuck in a 5 wide max mindset).
My observations noticed is it doesn't heat more than one square of clean ground around- any object occupying the adjacent space seem to cancel the heating effect, i.e. planter, table, so I assume the "greenhouse" is still flagged as open air location and is being canceled out by the outside elements.
I guess the vehicle entities have a smaller and more defined resource overhead to check if it is enclosed although my heating tests for vehicles stop at heated tanks for water on the go.
I don't wish to be negative just a little bummed I couldn't make an attached closed-in area to an existing building.