game.limit = function(character, dt)
  if character.position.x <= character.origin.x then
    character.position.x = character.origin.x
  elseif character.position.x >= windowProfile.mode.width - character.origin.x then
    character.position.x = windowProfile.mode.width - character.origin.x
  end

  if character.position.y <= character.origin.y then
    character.position.y = character.origin.y
  elseif character.position.y >= windowProfile.mode.height - character.origin.y then
    character.position.y = windowProfile.mode.height - character.origin.y
  end
end