/// <summary>
        /// 从源数据列表中随机取出一个奖品
        /// </summary>
        /// <param name="coins">金币数</param>
        /// <param name="sourceData">源数据</param>
        /// <returns></returns>
        private List <AwardData> FindPropAwards(int coins, List <AwardData> sourceData, ref int leftCoins)
        {
            if (coins <= 0)
            {
                throw new System.Exception("<><AwardDataHelper.FindPropAwards>Paramater 'cost' must not be less than zero");
            }
            else if (sourceData == null || sourceData.Count == 0)
            {
                throw new System.Exception("<><AwardDataHelper.FindPropAwards>Paramater 'sourceData' is null or its length is zero");
            }

            List <AwardData> result = new List <AwardData>();

            sourceData = sourceData.FindAll(t => t.Price <= coins);//过滤出价格小于金币数的奖品
            if (sourceData.Count == 0)
            {
                return(result);                      //如果一个都没有,则返回空的集合
            }
            int       randomIndex = Random.Range(0, sourceData.Count * 10) % sourceData.Count;
            AwardData awardData   = sourceData[randomIndex];                                            //随机取出一个奖品
            int       count       = coins / awardData.Price;                                            //计算金币数一共购买几个奖品

            if (coins % awardData.Price != 0 && (awardData.Price * (count + 1)) / (float)coins <= 1.1f) //如果金币还有剩余,尝试再多买一个,但不能超出所有金币数的10%
            {
                count += 1;
            }
            leftCoins       = coins - awardData.Price * count;
            awardData.Count = count;
            result.Add(awardData);
            return(result);
        }
 /// <summary>
 /// 增加奖品
 /// </summary>
 /// <param name="awardData">奖品数据</param>
 public void AddItem(AwardData awardData)
 {
     if (awardData != null)
     {
         if (awardData.AwardType.ToLower() == AwardTypes.COIN.ToLower() ||
             awardData.AwardType.ToLower() == AwardTypes.FOOD.ToLower())
         {
             this.FundDataManager.AddProperty(awardData.ID, awardData.Count);
         }
         else
         {
             this.ItemDataManager.AddItem(awardData.ID, awardData.Count);
         }
     }
     else
     {
         Debug.LogError("<><AwardDataHelper.AddItem>Parameter 'awardData' is null");
     }
 }