//Coroutine for incrementing timer over time
private IEnumerator countDown(CountdownDelegate functionToExecute)
{
while (Time.realtimeSinceStartup < endTime)
{
print(endTime - Time.realtimeSinceStartup);
yield return(new WaitForSeconds(updateInterval));
}
functionToExecute();
}
//Starts counting from 0
public void countDownAndExecute(float duration, CountdownDelegate functionToExecute)
{
StopCoroutine(countDown(functionToExecute));
endTime = duration + Time.realtimeSinceStartup;
StartCoroutine(countDown(functionToExecute));
}