show all hotspots in AC

using UnityEngine;
using UnityEngine.UI;
using System.Collections;
using System.Collections.Generic;

namespace AC
{
    public class SnoopScript : MonoBehaviour
    {
        public Image snoopSprite;
        public Image portalSprite;
        public Canvas snoopCanvas;
        public float fadespeed = 2f;

        private Dictionary<Image, Hotspot> hotspotsDict = new Dictionary<Image, Hotspot>();

        void Update ()
        {
            if( snoopCanvas.transform.childCount > 0 )
            {
                foreach( Image sprite in hotspotsDict.Keys )
                {
                    sprite.rectTransform.position = hotspotsDict[sprite].GetIconScreenPosition();
                }
            }
            if (Input.GetAxis ("FlashHotspots") == 1)
            {
                FlashHotspots();
            }
        }

        private void FlashHotspots ()
        {
            Hotspot[] hotspots = FindObjectsOfType (typeof (Hotspot)) as Hotspot[];

            foreach (Hotspot hotspot in hotspots)
            {
                if (hotspot.IsOn () && hotspot != KickStarter.playerInteraction.GetActiveHotspot ())
                {
                    Image hotspotSnoop;
                    if( hotspot.IsSingleInteraction() )
                    {
                        hotspotSnoop = Instantiate( portalSprite ) as Image;
                    }
                    else
                    {
                        hotspotSnoop = Instantiate( snoopSprite ) as Image;
                    }
                    hotspotSnoop.transform.SetParent(snoopCanvas.transform);
                    hotspotSnoop.rectTransform.position = hotspot.GetIconScreenPosition();
                    hotspotsDict.Add( hotspotSnoop, hotspot );

                    StartCoroutine(FadeOut( hotspotSnoop ));
                }
            }
        }

        IEnumerator FadeOut(Image obj)
        {
            yield return new WaitForSeconds(1.0f);

            obj.CrossFadeAlpha (0.0f, fadespeed, false);

            while( obj.canvasRenderer.GetAlpha() > 0.0f )
            {
                yield return null;
            }
            Destroy (obj.gameObject);
            hotspotsDict.Remove (obj);
        }
    }
}