Right click drop down menu system

menu.rb

def tick args
  args.state.menu ||= [
      {
          label: "Place black square",
          action: lambda {args.outputs.static_solids << [args.state.rmb_click.x-10, args.state.rmb_click.y-10, 20, 20, 0, 0, 0, 255]}
      },
      {
          label: "Place red square",
          action: lambda {args.outputs.static_solids << [args.state.rmb_click.x-10, args.state.rmb_click.y-10, 20, 20, 255, 0, 0, 255]}
      },
      {
          label: "Place green square",
          action: lambda {args.outputs.static_solids << [args.state.rmb_click.x-10, args.state.rmb_click.y-10, 20, 20, 0, 255, 0, 255]}
      },
      {
          label: "Place blue square",
          action: lambda {args.outputs.static_solids << [args.state.rmb_click.x-10, args.state.rmb_click.y-10, 20, 20, 0, 0, 255, 255]}
      },
      {
          label: "Clear squares",
          action: lambda {args.outputs.static_solids.clear}
      }
  ]
  if args.inputs.mouse.click && args.state.menu_open
    args.state.menu_open = false
    args.state.menu.each do |item|
      mouse_rect = args.inputs.mouse.point
      if mouse_rect.intersect_rect? item[:bbox]
        item[:action].()
      end
    end
  end
  if args.state.rmb_last && !args.inputs.mouse.button_right
    args.state.menu_open = true
    args.state.rmb_click = args.inputs.mouse.point
  end
  if args.state.menu_open
    draw_menu args.state.menu, args
  end

  args.state.rmb_last = args.inputs.mouse.button_right
end

def draw_menu menu, args
  menu_width, menu_height = 0, 0
  font_size = -1
  menu.each do |item|
    w, h = args.gtk.calcstringbox(item[:label], font_size, "font.ttf")
    menu_width = menu_width.greater w
    menu_height += h
  end
  menu_width+=10
  menu_height+=10*menu.length
  x_off = 0
  y_off = 5
  unless 1280 > (args.state.rmb_click.x+menu_width)
    x_off = 1280-(args.state.rmb_click.x+menu_width)
    end
  unless 0 < (args.state.rmb_click.y-menu_height)
    y_off += (args.state.rmb_click.y-menu_height)-15
  end
  args.outputs.solids << [args.state.rmb_click.x+x_off, args.state.rmb_click.y-menu_height-10-y_off, menu_width, menu_height+10, 255, 255, 255]
  menu.each do |item|
    w, h = args.gtk.calcstringbox(item[:label], 0, "font.ttf")
    args.outputs.labels << [args.state.rmb_click.x+5+x_off, args.state.rmb_click.y-y_off-5, item[:label], font_size]
    y_off += h + 10
    args.outputs.borders << [args.state.rmb_click.x+x_off, args.state.rmb_click.y-y_off, menu_width, h+11]
    item[:bbox] = [args.state.rmb_click.x+x_off, args.state.rmb_click.y-y_off, menu_width, h+11]
  end
end