Joystick

joystick.rb

# ★ Joystick
# ★★★★★★★★
#
# Author/s : cremno
# RGSS ver : 1 to 3

module Joystick

  class << self

    def uint(v)
      v & 0xffff_ffff
    end

    private :uint

    def number_of_devices
      uint(Win32API.new('winmm', 'joyGetNumDevs', 'V', 'I').call)
    end

    def position(id = 0)
      f = Win32API.new('winmm', 'joyGetPos', 'IP', 'I')
      ji = "\0" * 16
      [
        uint(f.call(id, ji)),
        ji.unpack('I4')
      ]
    end

    def attached?
      number_of_devices != 0 && position[0] == 0
    end

  end

end