Tonight's update: happiness is working, along with weather requests!
Here's an example of weather requests and the happiness meter. The requests change as you complete them.
When the weather becomes extreme, your current request is replaced and the happiness meter decreases faster.
Sun Jelly is mechanically complete! Aside from some final tweaks to spawning and happiness, all that's left is to make the game pretty. Assuming the tweaks don't take too long, I'll be able to show some artwork tomorrow!