/* * Return the number of this Joystick::Event object. * * The value of Joystick::Event#number is the axis or button of the * event. * * Aliases: * Joystick::Event#num * * Example: * puts "You're using joypad #{(ev.num / 2) + 1}." \ * if ev.type == Joystick::Event::AXIS * */ static VALUE j_ev_number(VALUE self) {