Background = {}
Background.__index = Background

function Background.new(player_num, bpm, scene_preset)
    local self = setmetatable({}, Background)

    self.player_num = player_num
    self.bpm = bpm
    self.scene_preset = scene_preset

    print(string.format("Background created: player=%d, bpm=%.1f, scene=%s",
                        player_num, bpm, scene_preset))

    return self
end

function Background:update(current_ms)
end

function Background:add_chibi(is_bad, player_num)
end

function Background:add_renda()
end

function Background:draw_back()
end

function Background:draw_fore()
end

function Background:destroy()
end