Add accelerometer support (DeviceMotionEvent & DeviceOrientationEvent)

[mattbailey]

Awesome library!

Would be great to add motion support, via:

https://developer.mozilla.org/en-US/docs/Web/API/Detecting_device_orientation

[liftoff]

I had planned to add this but can you give me an example of how you'd expect the events to be named?

HI.on('tilt:left', doTiltLeft); // Maybe?

Also curious what sorts of thresholds/settings it should have.

[mattbailey]

Yeah, there's a lot to consider here, especially if you take into account three dimensional space. Maybe aircraft motion types? Pitch, yaw, roll? coupled with "gestures" like "flick" or "shake"

[liftoff]

That's actually a great point: Accelerometers work a bit like joystick axes. Since that's the case I should be able to just mimick how the Gamepad plugin handles it:

HI.on('gpad:axis:1', moveBackAndForth); // Something similar to this

To keep things simple for everyone I'll see if I can add support for all the common ways to represent axes:

pitch == tilt:forward / tilt:back
roll == tilt:left / tilt:right
yaw == rotate:left / rotate:right

That way you could do HI.on('pitch', forwardBack) or HI.on('tilt', tiltControl) or get more specific and do things like HI.on('tilt:left', doTiltLeft);

Once those basics are complete I can add support for gestures like shake, spin, flip, and tossdevice. The latter could be a cool way for manufacturers to demonstrate the robustness of their phones/tablets by writing a game that detects when the device is thrown (HI.on('tossdevice', playWheeSound)) and lands in a designated bin (HI.on('suddenstop', locationCheck)) 😄