-- Atrapa dla funkcji setLogicValue, aby uniknąć błędów w Intellisense
if not getClock then
  function getClock()
    -- Pusta implementacja: w docelowym środowisku funkcja istnieje
  end
end

-- class definition
Counter =
{
  -- time point in floating point cpu seconds
  timePoint = nil,
};

Counter.__index = Counter;

-- constructor
function Counter.create()
  local cnt = {};             -- our new object
  setmetatable(cnt, Counter); -- make Counter handle lookup

  -- initialize our object
  cnt.timePoint = getClock();

  return cnt;
end

-- returns number of milliseconds since last reset.
function Counter:elapsed()
  return getClock() - self.timePoint;
end

-- resets counter
function Counter:reset()
  self.timePoint = getClock();
end