It's not really any more complicated than the logic you'd use in a 2D game. The plugin is meant for users of intermediate skill level. There are already plenty of helper functions and multiple ways to attack various problems. However you can't expect to work in 3D without some basic vector math skills.
Try to learn from the examples by changing things and inspecting various features and you wont have to ask so many questions. Stuff like this can be copy pasted as events, it's already very simple and everyone needs different use cases/modifications a behavior couldn't replace.