Accelerometer movement to power bar

Hi, I’ve looked over question about accelerometer, but haven’t found one that answers my doubt fully.

I wanted to do something kinda like what the game i-Fishing did, where they use the accelerometer to identify when the line is thrown.

What I wanted to do is for people to have their phon on and upright position, and then do a movement kinda of like the ifishing one, where they make the movement of “throwing” with the phone, and the intensity of this movement would define a “power bar”.

Is it possible?

Can I achieve this only using the onTilt event?

How can I identify the intensity of the movement to move the power bar?

Thanks in advance.