JoystickAxisMoved is an event that occurs when a joystick’s control stick has changed position on one of its axes.
A joystick axis measures the movement of the control stick. Most joysticks have at least 2 axes for each stick, one for horizontal movement, and one for vertical movement. Fancy ones have a third axis for measuring twist, and controllers with two sticks have at least 4 axes.
Unlike simple buttons or keys, which have only 2 values (pressed or not-pressed), a joystick axis has a smooth spectrum of possible values, ranging from -1.0 to 1.0. This allows for smoother, more precise control than is possible with the keyboard.
Creates a new JoystickAxisMoved instance.
|joystick_id:||an integer identifying which joystick changed. The first joystick is 0.|
|axis:||an integer identifying which axis changed. The first axis on each joystick is 0.|
|value:||a Float representing the current value of the axis. Ranges from -1.0 to 1.0.|
# File lib/rubygame/events/joystick_events.rb, line 61 def initialize( joystick_id, axis, value ) unless joystick_id.kind_of?(Fixnum) and joystick_id >= 0 raise ArgumentError, "joystick_id must be an integer >= 0" end @joystick_id = joystick_id unless axis.kind_of?(Fixnum) and axis >= 0 raise ArgumentError, "axis must be an integer >= 0" end @axis = axis unless value.kind_of?(Numeric) and value.between?(-1.0, 1.0) raise ArgumentError, "value must be a number in the range (-1.0)..(1.0)" end @value = value.to_f end