frontend: Joystick output: force feedback via vibration motor if available

[vshie]

Current behaviour

Lots of video games rumble your joystick when your vehicle collides with walls or objects. Creating a link between accelerometer readings "spiking" and joystick rumble would be a cool way to convey to an operator they are hitting things, particularly the bottom. This could also be useful to signal other things, like vehicle mode changes or other event sources.

Expected or desired behaviour

In joystick menu, allow configuration of joystick rumble "source" if available. Set to collision detection, mode change, etc. for sources. Include "TEST" button to verify controller rumbles as expected, and a duration of the vibration slider?

Prerequisites

• I have checked to make sure that a similar request has not already been filed or fixed.

[rafaellehmkuhl]

Makes a lot of sense.

Do you think it could be helpful with something as simple as "if vehicle.acc_x > X_LIMIT then vibrate" or processing that raw data from the accelerometer (e.g.: moving average) would be needed for it to be useful?