dsi submenu

=begin
    Default submenu screen to DSi System /in map/
    &beta
=end
Ligni.register(:dsi_submenu, "dax", 0.1, [[:dsi, "dax"]]) {
    # [scene_map]
    class Scene_Map < Scene_Base
        # [start]
        alias :submenu_at_map_start :start
        def start
            submenu_at_map_start
            @submenu_button = Sprite.new("S: #{$game_system.smdbp}") rescue Sprite.new("S: #{DS::SETUP[:SUBMENU][:DBT][:PICTURE]}")
            @submenu_button.z = DS.screen.z + 1
            @submenu_button.x, @submenu_button.y = *DS::SETUP[:SUBMENU][:DBT][:POS].position.to_a
            @submenu_button.opacity = 128
        end
        # terminate
        alias :submenu_at_map_terminate :terminate
        def terminate
            submenu_at_map_terminate
            @submenu_button.dispose
        end
        # update
        alias :submenu_at_map_update :update
        def update
            submenu_at_map_update
            @submenu_button.if_mouse_over { |over| @submenu_button.opacity = over ? 255 : 127 }
            @submenu_button.if_mouse_click { eval($game_system.smdbs) rescue eval(DS::SETUP[:SUBMENU][:DBT][:SCENE]) }
            trigger?(DS::SETUP[:SUBMENU][:DBT][:KEY]) { eval($game_system.smdbs) rescue eval(DS::SETUP[:SUBMENU][:DBT][:SCENE]) }
        end
    end
}