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

namespace YLBattle
{
    /// <summary>
    /// 子弹定义
    /// </summary>
    public class CBullet
    {
        /// <summary>
        /// 子弹唯一标示符
        /// </summary>
        private string mID = string.Empty;

        /// <summary>
        /// 子弹隶属技能模板ID
        /// </summary>
        private string mTID = string.Empty;

        /// <summary>
        /// 是否为必杀技
        /// </summary>
        private bool mIsKill = false;
        /// <summary>
        /// 技能等级
        /// </summary>
        private int mLevel = 0;

        /// <summary>
        /// 是否标记目标
        /// </summary>
        private bool mIsMarkTrg = false;
        /// <summary>
        /// 生成序号
        /// </summary>
        private int mSN = 0;

        /// <summary>
        /// 技能创建者id
        /// </summary>
        private string mCastFighter = null;

        /// <summary>
        /// 子弹目标
        /// </summary>
        private string mTrgFighter = null;

        /// <summary>
        /// 当前所在位置
        /// </summary>
        private Vector3 mCurrentPos = Vector3.zero;

        /// <summary>
        /// 子弹目标类型
        /// </summary>
        private EBulletTargeType mTargetType;

        /// <summary>
        /// 当前子弹瞄准策略
        /// </summary>
        private IBulletAIM mAimPolicy;
        /// <summary>
        /// 当前子弹伤害目标锁定策略
        /// </summary>
        private IBulletAIM mDamagePolicy;
        /// <summary>
        /// 子弹目标参数
        /// </summary>
        private object mTargetParam;

        /// <summary>
        /// 子弹状态机
        /// </summary>
        private CBulletFSM mFSM = null;

        /// <summary>
        /// 发射时间
        /// </summary>
        private long mLaunchTime = long.MinValue;

        /// <summary>
        /// 子弹回收标志
        /// </summary>
        private bool mIsDead = false;

        /// <summary>
        /// 碰撞事件队列
        /// </summary>
        private Queue<BulletCollideEvent> mCollideQueue = new Queue<BulletCollideEvent>();

        /// <summary>
        /// 外部触发回传参数
        /// </summary>
        public string mTriggerParm = string.Empty;

        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="env">环境上下文数据</param>
        /// <param name="id">唯一编号</param>
        /// <param name="tid">模板编号</param>
        /// <param name="sn">序列号</param>
        /// <param name="caster">施法者</param>
        /// <param name="target">目标</param>
        /// <param name="level">技能等级</param>
        /// <param name="aimPolicy">瞄准策略</param>
        /// <param name="aimPrm">瞄准附加</param>
        public CBullet(BattleParam env, string id, string tid, int sn, string caster, string target, bool ismarktrg,
            int level,
            IBulletAIM aimPolicy,
            IBulletAIM damaPolicy,
            int aimPrm = 0,
            string triggerparm = "")
        {
            this.mID = id;
            this.mTID = tid;
            this.mSN = sn;
            this.mCastFighter = caster;
            this.mTrgFighter = target;
            this.mLevel = level;
            this.mIsMarkTrg = ismarktrg;

            this.mCurrentPos = Vector3.zero;

            this.mAimPolicy = aimPolicy;
            this.mDamagePolicy = damaPolicy;

            this.mTriggerParm = triggerparm;
            this.mFSM = new CBulletFSM();
            this.mFSM.Initialize(env, this);
        }

        /// <summary>
        /// 获取子弹状态机
        /// </summary>
        /// <returns>状态机对象</returns>
        public CBulletFSM FSM()
        {
            return this.mFSM;
        }

        /// <summary>
        /// 帧周期调度
        /// </summary>
        public void OnUpdate()
        {
            if (null != this.mFSM)
            {
                this.mFSM.OnUpdateFSM();
            }
        }
        #region(数据相关)

        /// <summary>
        /// 获取子弹实例ID
        /// </summary>
        /// <returns>实例id</returns>
        public string ID()
        {
            return this.mID;
        }

        /// <summary>
        /// 获取模板（所属技能）数据ID
        /// </summary>
        /// <returns>模板数据id</returns>
        public string TID()
        {
            return this.mTID;
        }

        /// <summary>
        ///  必杀技能
        /// </summary>
        /// <returns>模板数据id</returns>
        public bool IsKill()
        {
            return this.mIsKill;
        }
        /// <summary>
        /// 获取技能等级
        /// </summary>
        /// <returns>技能等级</returns>
        public int Level()
        {
            return this.mLevel;
        }
        /// <summary>
        /// 获取子弹生成序号
        /// </summary>
        /// <returns>序号id</returns>
        public int SN()
        {
            return this.mSN;
        }

        /// <summary>
        /// 获取子弹发射者
        /// </summary>
        /// <returns>发射者id</returns>
        public string Owner()
        {
            return this.mCastFighter;
        }

        /// <summary>
        /// 子弹瞄准的目标
        /// </summary>
        /// <returns>发射者id</returns>
        public string AimTarget()
        {
            return this.mTrgFighter;
        }

        /// <summary>
        /// 瞄准策略
        /// </summary>
        /// <returns></returns>
        public IBulletAIM AimPolicy()
        {
            return this.mAimPolicy;
        }
        /// <summary>
        /// 伤害策略
        /// </summary>
        /// <returns></returns>
        public IBulletAIM DamagePolicy()
        {
            return this.mDamagePolicy;
        }
        /// <summary>
        /// 获取子弹当前所在位置
        /// </summary>
        /// <returns>位置信息</returns>
        public Vector3 CurrentPos()
        {
            return this.mCurrentPos;
        }

        /// <summary>
        /// 修改子弹当前位置
        /// </summary>
        /// <param name="seat">占位</param>
        public void ModifyCurrentPos(Vector3 pos)
        {
            this.mCurrentPos = pos;
        }

        /// <summary>
        /// 获取目标类型
        /// </summary>
        /// <returns>目标类型</returns>
        public EBulletTargeType CurrentTargetType()
        {
            return this.mTargetType;
        }

        /// <summary>
        /// 获取子弹目标参数（目标ID）
        /// </summary>
        /// <returns>目标ID</returns>
        public object CurrentTargetParam()
        {
            return this.mTargetParam;
        }

        /// <summary>
        /// 设置目标数据
        /// </summary>
        /// <param name="type">目标类型</param>
        /// <param name="param">参数</param>
        public void SetTarget(EBulletTargeType type, object param)
        {
            this.mTargetType = type;
            this.mTargetParam = param;
        }

        /// <summary>
        /// 设置子弹发射时间
        /// </summary>
        /// <param name="time">时间</param>
        public void SetLaunchTime(long time)
        {
            this.mLaunchTime = time;
        }

        /// <summary>
        /// 获取子弹发射时间
        /// </summary>
        /// <returns>时间</returns>
        public long GetLaunchTime()
        {
            return this.mLaunchTime;
        }

        /// <summary>
        /// 获取碰撞事件数量
        /// </summary>
        /// <returns>数量值</returns>
        public int HasCollideEvent()
        {
            return this.mCollideQueue.Count;
        }

        /// <summary>
        /// 出队碰撞事件
        /// </summary>
        /// <returns>没有事件返回NULL</returns>
        public BulletCollideEvent CollideEvent()
        {
            if (this.mCollideQueue.Count == 0)
            {
                return null;
            }

            return this.mCollideQueue.Dequeue();
        }

        /// <summary>
        /// 入队碰撞事件
        /// </summary>
        /// <param name="bce">事件描述</param>
        public void EnqueueCollideEvent(BulletCollideEvent bce)
        {
            this.mCollideQueue.Enqueue(bce);
        }

        /// <summary>
        /// 标记子弹为待回收状态
        /// </summary>
        public void MarkBulletDead()
        {
            this.mIsDead = true;
        }

        /// <summary>
        /// 检测子弹是否为待回收状态
        /// </summary>
        /// <returns>true待回收, false不用回收</returns>
        public bool IsBulletDead()
        {
            return this.mIsDead;
        }

        /// <summary>
        /// 检测子弹是否为待回收状态
        /// </summary>
        /// <returns>true待回收, false不用回收</returns>
        public bool IsMarkTrg()
        {
            return this.mIsMarkTrg;
        }
        #endregion
    }
}