// Updates the timer (including the graphical representation)
// If time runs out in the trial or the break scene. It switches to the next scene.
void StartTimer()
{
tiempo -= Time.deltaTime;
if (showTimer)
{
BoardFunctions.UpdateTimer();
}
// When the time runs out:
if (tiempo < 0)
{
ChangeToNextScene(BoardManager.itemClicks, false);
}
}