GameTimeUI.cs

using UnityEngine;
using UnityEngine.Events;
using UnityEngine.UI;
using System.Collections;
using System;
using UnityEngine.Networking;
using Random = UnityEngine.Random;

public class GameTimeUI : MonoBehaviour
{
	Text _time;
	TimeSpan _timeSpan;

	void Awake ()
	{
//		Debug.Log (string.Format ("GameTimeUI.Awake: {0}", ""));
		_time = gameObject.FindRecursive ("Time").GetComponent<Text> ();
	}

	void Start()
	{
		StartCoroutine (HookListeners());
	}

	IEnumerator HookListeners()
	{
		while (NetworkTimeManager.i == null) {
			yield return new WaitForEndOfFrame ();
		}

		// NOTE, CONFIRM: unity events maintain a weak reference to their subscribers, 
		// so we don't need to worry about explicitly removing the listener elsewhere
		NetworkTimeManager.i.UEventColorFlip.AddListener(ChangeColor); 
	}

	void Update ()
	{
		if (NetworkTimeManager.i == null)
		{
			var debugString = string.Format ("GameTimeUI.Update: {0} ({1})", 
				"NetworkTimeManager.i is null, aborting", NetworkTimeManager.i.secondsRemaining);
			ClientDebugUI.i.Log (debugString, GameColors.Yellow);
			Debug.LogWarning (debugString);
			return;
		}

		UpdateTimeLeft();
	}

	void UpdateTimeLeft()
	{
		var sec = NetworkTimeManager.i.secondsRemaining;

		// the line below will only be valid for the host
		// if(NetworkServer.active) ..

		// LINK: http://stackoverflow.com/questions/463642/what-is-the-best-way-to-convert-seconds-into-hourminutessecondsmilliseconds
		_timeSpan = TimeSpan.FromSeconds (sec);
		_time.text = string.Format ("{0:D2}:{1:D2}", _timeSpan.Minutes, _timeSpan.Seconds);
//		Debug.Log (string.Format ("sec = {0}, _timeSpan.Minutes = {1}, _timeSpan.Seconds = {2}",  sec, _timeSpan.Minutes, _timeSpan.Seconds));
	}

	void ChangeColor(int colorIndex)
	{
		ClientDebugUI.i.Log (string.Format("GameTimeUI.ChangeColor: {0}", colorIndex));
		GetComponent<Image> ().color = Constants.COLORS[colorIndex]; 
	}
}