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

namespace Game
{

    public class RoleSnapshotClass
    {
        public float time;
        public Sprite mSprite;
        public Vector3 BridgeDir;
        public Vector3 Pos;
        public void Reset()
        {
            time = 0;
            mSprite = null;
            BridgeDir = Vector3.zero;
            Pos = Vector3.zero;
        }
    }

    //主控玩家角色操作数据
    public class SnapshotData
    {
        /// <summary>
        /// 释放出来的行为历史
        /// </summary>
        List<RoleSnapshotClass> KeyHistory = new List<RoleSnapshotClass>();
        static Queue<RoleSnapshotClass> tempHistoryQueue = new Queue<RoleSnapshotClass>();
        const int HistoryLimit = 10;

        public SnapshotData()
        {
            Init();
        }

        void Init()
        {
            ClearHistory();
        }

        RoleSnapshotClass EnqueueOneMotionHistory()
        {
            if (tempHistoryQueue.Count > 0)
                return tempHistoryQueue.Dequeue();

            return new RoleSnapshotClass();
        }

        public void AddSnap(Sprite sprite,Vector3 bridgeDir,Vector3 pos)
        {
            while (KeyHistory.Count > HistoryLimit)
            {
                KeyHistory[0].Reset();
                tempHistoryQueue.Enqueue(KeyHistory[0]);
                KeyHistory.RemoveAt(0);
            }

            RoleSnapshotClass snap = EnqueueOneMotionHistory();
            snap.time = Time.time;
            snap.mSprite = sprite;
            snap.BridgeDir = bridgeDir;
            snap.Pos = pos;
            KeyHistory.Add(snap);
        }

        public void ClearHistory()
        {
            for (int i = 0; i < KeyHistory.Count; i++)
            {
                KeyHistory[i].Reset();
                tempHistoryQueue.Enqueue(KeyHistory[i]);
            }
            KeyHistory.Clear();
        }

        /// <summary>
        /// 获得后记得深度拷贝 避免引用类型问题
        /// </summary>
        /// <returns></returns>
        public RoleSnapshotClass[] GetHistoryArray()
        {
            return KeyHistory.ToArray();
        }
    }
}