two controllers, one game

shared_controller.rb

class SharedKeyDown
  attr :args

  def inputs
    @args.inputs
  end

  def start
    inputs.controllers.any? { |c| c.key_down.start }
  end

  def r1
    inputs.controllers.any? { |c| c.key_down.r1 }
  end

  def r2
    inputs.controllers.any? { |c| c.key_down.r2 }
  end

  def a
    inputs.controllers.any? { |c| c.key_down.a }
  end

  def b
    inputs.controllers.any? { |c| c.key_down.b }
  end

  def select
    inputs.controllers.any? { |c| c.key_down.select }
  end

  def left
    inputs.controllers.any? { |c| c.key_down.left }
  end

  def right
    inputs.controllers.any? { |c| c.key_down.right }
  end

  def up
    inputs.controllers.any? { |c| c.key_down.up }
  end

  def down
    inputs.controllers.any? { |c| c.key_down.down }
  end
end

class SharedController
  attr :args

  def args= value
    @args = value
    @shared_key_down.args = value
  end

  def initialize
    @shared_key_down = SharedKeyDown.new
  end

  def inputs
    @args.inputs
  end

  def key_down
    @shared_key_down
  end

  def left_analog_x_perc
    inputs.controllers.map(&:left_analog_x_perc).sum
  end

  def r1
    inputs.controllers.any? { |c| c.r1 }
  end

  def r2
    inputs.controllers.any? { |c| c.r2 }
  end

  def l1
    inputs.controllers.any? { |c| c.l1 }
  end

  def l2
    inputs.controllers.any? { |c| c.l2 }
  end

  def a
    inputs.controllers.any? { |c| c.a }
  end

  def b
    inputs.controllers.any? { |c| c.b }
  end

  def select
    inputs.controllers.any? { |c| c.select }
  end

  def left
    inputs.controllers.any? { |c| c.left }
  end

  def right
    inputs.controllers.any? { |c| c.right }
  end

  def left_right
    inputs.controllers.map(&:left_right).sum
  end
end