variable to control front/backyard expansion

[boformer]

By default the length of a growable building plot will extend if there is enough space. For example, a 1x1 asset will create a 1x4 asset if there is enough space.

Some assets place additional parking spaces and props in the backyard.

Other assets don't use the additional space, so it is a waste of space to expand the backyard.

I disabled the backyard expansion feature when I modified the footprint calculator.

It would be better if there was a way to control the backyard expansion.

Ideas:

• A field per Theme (true / false): Not very precise, but easy to implement. Drawback: What happens when you select one theme with and one without backyard expansion?
• A field per building type: Would require a new data structure, but it is very precise.
• A check box in the policy GUI to enable backyard expansion per district: Hmm, I don't like that

And the last idea: Automatically determine if the backyard should be extended by checking if any props are place in the backyard: My favorite, but difficult to implement.

[boformer]

I solved this yesterday. Uploading the changes soon.