control maps in LÖVE2D

control_maps.lua

-- small improvement from http://tannerrogalsky.com/blog/2012/04/06/control-maps-in-love2d/
-- this version has a cleaner control_map by calling m

class "GameController" {
  moveUp = function(self)
  end,

  control_map = {
    keyboard = {
      on_press = {
        up = "moveUp"
      }
    }
  }
}
game_controller = GameController()

function love.keypressed(key, unicode)
  local action = game_controller.control_map.keyboard.on_press[key]
  if action then
    if type(action) == "function" then action(game_controller) end
    if type(game_controller[action]) == 'function' then game_controller[action](game_controller) end
  end
end