inline read onlyLEFT_X:GamepadAxis
inline read onlyLEFT_Y:GamepadAxis
inline read onlyRIGHT_X:GamepadAxis
inline read onlyRIGHT_Y:GamepadAxis
inline read onlyTRIGGER_LEFT:GamepadAxis
inline read onlyTRIGGER_RIGHT:GamepadAxis
inline toString ():String