Gamepad
Controller support: up to four gamepads, polled every tick. Ask them anywhere with
Gamepad, or implement GamepadListener on the stage or a sprite to be told about
button presses and controllers connecting. Buttons are in Xbox positions (A is Cross
on a PlayStation controller, see GamepadButton); sticks report y up, as on the stage,
and a stick near its middle reports (0, 0). Controllers without a known layout are skipped.
There is no rumble.
In the -all jar and Studio; with Maven add the artifact scratch-gamepad.