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

public class EffectUtil
{

	public static GameObject CreateLanding()
	{
		GameObject gameObj = GameObject.Instantiate<GameObject>(Resources.Load<GameObject>("Prefabs/Effects/Landing"));
		return gameObj;
	}

	public static GameObject CreateDisappear()
	{
		GameObject gameObj = GameObject.Instantiate<GameObject>(Resources.Load<GameObject>("Prefabs/Effects/Disappear"));
		return gameObj;
	}



	private static Dictionary<string, List<GameObject>> effectCacheDict = new Dictionary<string, List<GameObject>>();

	public static GameObject CreateEffect(string path)
	{
		GameObject gameObj = null;
		if(effectCacheDict.ContainsKey(path) && effectCacheDict[path].Count > 0)
		{
			gameObj = effectCacheDict[path][0];
			effectCacheDict[path].RemoveAt(0);
			gameObj.SetActive(true);
			ParticleSystem ps = gameObj.GetComponent<ParticleSystem>();
			if(ps != null)
				ps.Play();
		}
		else
		{
			GameObject prefabObj = Resources.Load<GameObject>("Prefabs/Effects/"+path);
			if(prefabObj == null)
			{
				Debuger.LogError("Could not load effect from : "+path);
				return null;
			}
			gameObj = GameObject.Instantiate<GameObject>(prefabObj);
		}

		EffectDelayDestroy delayDes = gameObj.GetComponent<EffectDelayDestroy>();
		if(delayDes != null)
			delayDes.path = path;

		return gameObj;
	}

	public static void Recycle(string path, GameObject obj)
	{
		if(StringUtil.Empty(path))
		{
			GameObject.Destroy(obj);
			Debuger.LogError("Recycal Effect path is empty "+obj);
			return;
		}

//		Debuger.Log("Recycal Effect["+path+"] "+obj);

		if(obj.transform.parent != null)
			obj.transform.SetParent(null);

		ParticleSystem ps = obj.GetComponent<ParticleSystem>();
		if(ps != null)
			ps.Stop();

		obj.SetActive(false);
		if(effectCacheDict.ContainsKey(path))
		{
			effectCacheDict[path].Add(obj);
		}
		else
		{
			List<GameObject> list = new List<GameObject>();
			list.Add(obj);
			effectCacheDict.Add(path, list);
		}
	}

	public static void ClearCache()
	{
		effectCacheDict.Clear();
	}
}