Thanks to @Simonrazer 's logic nodes tutorial, I was able to understand how they work a little better and implement the mouse follow feature for Rick. I’ll provide the .blend file here for reference, but basically I have the head and eyes each parented to empties, so that the head can turn on one axis, and the empty another. The rotation is done by getting the mouse coordinates, and subtracting half of the window size, and multiplying it by a tiny number so that it doesn’t rotate too wildly. Relying on window size means I can’t get a good implementation with the fullscreen option, so I’ll need to figure that out. But anyway, here’s what things are looking like now:
And here’s the .blend file if any of you are interested:
Rick.blend (1.7 MB)
Gonna take a break for the holidays and get back at this sometime next year, so I hope all of you have a good holiday and a happy new year.