gistfile1.cs

/*
  USAGE 
  timer = gameObject.AddComponent<Timer>().setup( 1f, callBackHandler );
*/

using UnityEngine;
using System.Collections;

public delegate void TimerCallback();

public class Timer : MonoBehaviour {
  
	public event TimerCallback timerCallbackEvent;
	
	public float duration;
	private float time = 0f;
	
	public void setup( float duration, TimerCallback callbackEvent )
	{
		this.duration = duration;
		timerCallbackEvent += new TimerCallback( callbackEvent );
	}

	void Start ()
	{
		time = Time.time;
		Debug.Log( "starting" );
	}
	
	void Update ()
	{
		Debug.Log( "Updating" );
		if( time <= Time.time - duration ){
			onEnd();
		}
	}
	void onEnd()
	{
		Debug.Log( "End" );
		if( timerCallbackEvent != null ) timerCallbackEvent();
		Destroy( this );
		
	}
}