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

namespace YLBattle
{
    /// <summary>
    /// 
    /// </summary>
    public class SkillPolicyFinder
    {
        /// <summary>
        /// 单键实例
        /// </summary>
        private static SkillPolicyFinder _Instance = null;

        /// <summary>
        /// 瞄准策略
        /// </summary>
        private Dictionary<ESkillAIM, SkillAIMFoundation> mAIMPolicy = new Dictionary<ESkillAIM, SkillAIMFoundation>();


        /// <summary>
        /// 单键实例
        /// </summary>
        /// <returns>单键</returns>
        public static SkillPolicyFinder Instance()
        {
            if (null == _Instance)
            {
                _Instance = new SkillPolicyFinder();
            }

            return _Instance;
        }
        /// <summary>
        /// 构造函数
        /// </summary>
        protected SkillPolicyFinder()
        {
            this.mAIMPolicy.Clear();
            this.InitializeAIMPolicy();

        }
        /// <summary>
        /// 查询AIM
        /// </summary>
        /// <param name="type">查询类型</param>
        /// <returns>AIM瞄准策略</returns>
        public SkillAIMFoundation AIMFoundation(ESkillAIM type)
        {
            if (this.mAIMPolicy.ContainsKey(type))
            {
                return (SkillAIMFoundation)this.mAIMPolicy[type].Clone();
            }

            return null;
        }

        /// <summary>
        /// 
        /// </summary>
        private void InitializeAIMPolicy()
        {
            this.mAIMPolicy.Add(ESkillAIM.Map, new SkillAIMMap());
            this.mAIMPolicy.Add(ESkillAIM.Screen, new SkillAIMScreen());
            this.mAIMPolicy.Add(ESkillAIM.Center, new SkillAIMCenter());
        }
    }

}