public void IncrementPlaytimeDisplay(float elapsedTime)
{
int minutes = TimeHelper.ConvertToMin(elapsedTime);
int seconds = TimeHelper.ConvertToSec(elapsedTime);
// only reformat time if a value has changed since last update, for optimization
if (minutes != _elapsedMinutes || seconds != _elapsedSeconds)
{
_playtimeTextGUI.text = TimeHelper.FormatTime(minutes, seconds);
}
_elapsedMinutes = minutes;
_elapsedSeconds = seconds;
}