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

namespace WildAttack
{
    /// <summary>
    /// 敌人管理器
    /// </summary>
    public class EnemyManager : Singleton<EnemyManager>
    {
        /// <summary>
        /// 存放场上存活敌人（不包含初始怪）
        /// </summary>
        public List<Enemy> enemyList;
        #region Functions
        public void Init()
        {
            enemyList = new List<Enemy>();
            CreateWayPoint();
        }

        /// <summary>
        /// 敌人管理器生成敌人方法
        /// </summary>
        /// <param name="monsterId"></param>
        /// <param name="spawnGroupId"></param>
        public void CreateEnemy(int monsterId, int spawnGroupId)
        {
            Enemy enemy;
            // 武器权重
            MonsterData data = MonsterModule.GetInstance().GetData(monsterId);
            int weaponId = WeightRandomUtils.GetInstance().GetRandomId(data.weponWeight);
            //int weaponId = 3;
            if (weaponId == -1) return;
            GameObject obj;
            // 判断是否初始怪
            if (spawnGroupId <= 0)
            {
                // 新生成
                obj = GameObject.Instantiate(Resources.Load<GameObject>("Enemy/yellow/duyanguai_skin_flag"));
            }
            else
            {
                // 从池中取
                obj = EnemyPool.GetInstance().GetGameObject(weaponId);
            }
            obj.SetActive(true);
            // 添加脚本
            enemy = obj.GetComponent<Enemy>();
            if (enemy == null)
            {
                enemy = obj.AddComponent<Enemy>();
            }
            // 调用初始化
            enemy.Init(monsterId, weaponId, spawnGroupId);
            enemyList.Add(enemy);
        }

        GameObject[] wayPointObjs;
        /// <summary>
        /// 读表获取三个出生点
        /// </summary>
        public void CreateWayPoint()
        {
            // 读表get坐标 spawnGroup总数
            wayPointObjs = new GameObject[3];
            Vector3[] ve3Arr = new Vector3[3];
            for (int i = 0; i < ve3Arr.Length; i++)
            {
                Vector2 ve2 = WayPointModule.GetInstance().GetDataByGroup(i + 1)[0].wayPoint[0];
                ve3Arr[i] = new Vector3(ve2.x, 35, ve2.y);
            }

            // 生成emptyObj set layer collider等
            for (int i = 0; i < ve3Arr.Length; i++)
            {
                GameObject obj = new GameObject();
                obj.name = "wayPoint" + (i + 1);
                obj.transform.position = ve3Arr[i] + Vector3.up * 2;
                obj.layer = LayerMask.NameToLayer("WayPoint");
                SphereCollider collider = obj.AddComponent<SphereCollider>();
                collider.radius = 3;
                collider.isTrigger = true;
                wayPointObjs[i] = obj;
            }

            // 射线检测地面 getY轴坐标
            foreach (var item in wayPointObjs)
            {
                Ray ray = new Ray(item.transform.position, -item.transform.up);
                RaycastHit hitInfo;
                if (Physics.Raycast(ray, out hitInfo, 100, 1 << LayerMask.NameToLayer("Plane")))
                {
                    if (hitInfo.collider.gameObject.layer == LayerMask.NameToLayer("Plane"))
                    {
                        item.transform.position = new Vector3(item.transform.position.x, hitInfo.point.y, item.transform.position.z);
                    }
                }
            }
        }

        public GameObject[] GetWayPoints()
        {
            return wayPointObjs;
        }

        /// <summary>
        /// 游戏结束
        /// </summary>
        public void GameOver()
        {
            // 对场上敌人重新设置新的目标点（城门内建筑）
            foreach (var item in enemyList)
            {
                // set new WayPoint
                item.SetNewWayPoint(4);
            }
        }
        #endregion
    }
}