Available since LÖVE 0.5.0 and removed in LÖVE 0.9.0
It has been moved to Joystick:getAxis.
Returns the direction of the axis.
direction = love.joystick.getAxis( joystick, axis )
number direction
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Licensed under the GNU Free Documentation License, Version 1.3.
https://love2d.org/wiki/love.joystick.getAxis