By default, when you enter a room, you’ll immediately be given a “Decorated”, “Nicely Decorated” or “Beautifully Decorated” Moodlet, which will immediately go away when you leave the room. If there are objects with emotional auras in the room, you’ll also be given an emotional Moodlet based on it.
With the new Environment Effect Overhaul mod, instead of just suddenly jumping between emotions when going between rooms, the effects will occur gradually.
When you enter a room, a Moodlet will gradually build up and get stronger the longer you stay in that room. When you leave, it will gradually fade.
The Environment score and number of emotional auras will still effect the speed it rises.
The general “Happy” Moodlets will rise glower than emotional auras, and require at least 80 Environment points (the amount usually required for the “Nicely Decorated” Moodlet) to have any effect.
You can download the mod here: http://zerbu.tumblr.com/post/130971916702/the-sims-4-mod-environment-effect-overhaul
