Joystick.js, how to use

Hey,

I'm trying to make a moving character for mobile (I have the model with an idle animation and a running animation), so I imported the joystick.js from mobile assets and the joystick graphics from the finished Penelope project but I have no idea how to actually implement this into my prototype scene with animations...

Is there an easy explanation on how to do this?

I followed a few guides on how to do this but the ones I've read/watched were not finished.