Happiness in SE V?

[Q]

It is my impression too that only the peaceful happiness is used.
Sometimes it is hard to understand why things that worked perfectly in SE IV are not implemented/functional in SE V.

[Captain Kwok]

For the longest time it wasn't known if happiness.txt was actually being used. Not sure if it will be ever be change to become a selectable item again. I'll inquire about it though since it does control an important aspect of colony management.

[Fyron]

From my understanding, SE5 was pretty much rewritten from scratch in a new language (C++) to take advantage of all the 3d DirectX libraries.