Unityカウントダウンタイマーのサンプルコード

gistfile1.txt

//試合時間に３秒足すこと
private float maxTime = 63f;
Timer gameTimer = new Timer ();
gameTimer.Start (maxTime, 1f);
gameTimer.Elapsed += delegate(float rest) {
	if(rest == maxTime - 2f){
		gameStatusText.text = "GO!!";
	}
	if(rest <= maxTime - 3f){
		gameStatusText.text = "";
		isGameStart = true;
		timerPrefab.GetComponentsInChildren<Image>()[1].fillAmount = rest / (maxTime - 3f);
		timerPrefab.GetComponentInChildren<Text>().text = ((int)rest).ToString();
	}
};
gameTimer.Finished += delegate {
	isGameStart = false;
	gameStatusText.text = "FINISH!!";
	startButton.interactable = true;
};