using BehaviorDesigner.Runtime.Tasks;
using System.Collections.Generic;
using UnityEngine;

namespace CoreGame.Render
{
    /// <summary>
    /// TODO
    /// </summary>
    public class HitAndRun : Action
    {
        [SerializeField] private float range;
        private CombatEntity m_OwnerEnt;
        private Vector2 m_TargetPos;
        private List<CombatEntity> m_TargetList;

        private float m_StartTime;//��Щʱ�򵽲���Ŀ��㣬����һ���ڵ����ִ��ʱ��

        public override void OnStart()
        {
            m_StartTime = Time.time;
            m_OwnerEnt = Owner.GetEntity<CombatEntity>();

            var ac = m_OwnerEnt.aI;
            var maxSqrDis = float.MaxValue;
            int targetEid = 0;
            for (var index = 0; index < ac.targetList.Count; index++)
            {
                var targetId = ac.targetList[index];
                var target1 = Contexts.Combat.GetEntity(targetId);
                if (target1.IsValid() == false)
                {
                    continue;
                }
                
                var sqrDis = (m_OwnerEnt.transformProxy.position - target1.transformProxy.position).sqrMagnitude;
                if (sqrDis < maxSqrDis)
                {
                    maxSqrDis = sqrDis;
                    targetEid = targetId;
                }
            }

            var target = Contexts.Combat.GetEntity(targetEid);

            Vector2 monsterPosition = m_OwnerEnt.transformProxy.position;
            Vector2 playerPosition = target.transformProxy.position;
            Vector2 monster2Player = (playerPosition - monsterPosition).normalized;

            float randomaRadius = RandomSrv.Range(0f, Mathf.PI * 2);
            Vector2 randomDir = new Vector2(Mathf.Cos(randomaRadius), Mathf.Sin(randomaRadius));
            Vector2 fleeDir = (randomDir - monster2Player).normalized;

            m_TargetPos = monsterPosition + fleeDir * range;
        }

        public override TaskStatus OnUpdate()
        {
            var speed = m_OwnerEnt.property.MoveSpeed;
            m_OwnerEnt.navAgentProxy.SetDestination(m_TargetPos, speed);
            if ((m_OwnerEnt.transformProxy.position - m_TargetPos).sqrMagnitude < 0.1f)
            {
                return TaskStatus.Success;
            }

            if (m_StartTime + 1.5f < Time.time)
            {
                m_OwnerEnt.navAgentProxy.StopNav();
                return TaskStatus.Failure;
            }

            return TaskStatus.Running;
        }
    }
}