using BehaviorDesigner.Runtime.Tasks.EnemyAI;
using UnityEngine;
using UnityEngine.AI;
using UnityGameFramework.Runtime;

namespace BehaviorDesigner.Runtime.Tasks.Movement
{
    [TaskDescription("ToTarget using the Unity NavMesh.")]
    [TaskCategory("YLSJ")]
    [HelpURL("http://www.opsive.com/assets/BehaviorDesigner/Movement/documentation.php?id=9")]
    [TaskIcon("Assets/Behavior Designer Movement/Editor/Icons/{SkinColor}WanderIcon.png")]
    public class ActionMoveToTarget : NavMeshMovementBase
    {
        [Tooltip("终点目标Object")]
        public SharedTransform targetEndObj;
        /// <summary>
        /// 跟随的目标
        /// </summary>
        public SharedTransform target;
        public SharedTransform targetObject;
        [Tooltip("检测目标的层级")]
        public LayerMask objectLayerMask;
        public SharedFloat viewDistance = 10;
        // 是否移动中
        private bool bMove = false;
        private Vector3 movePos = Vector3.zero;
        /// <summary>
        /// 出生最大距离
        /// </summary>
        private float liveAlertDistance = 0;
        private BehaviorTree behaviorTree = null;


        /// <summary>
        /// 路径点顺序/倒叙
        /// </summary>
        private bool bPointAdd = true;

        /// <summary>
        /// 是否赶往出生点
        /// </summary>
        private bool bToLive = false;

        private Role role = null;

        public override void OnAwake()
        {
            base.OnAwake();
            behaviorTree = gameObject.GetComponent<BehaviorTree>();
        }

        public override void OnStart()
        {
            targetEndObj.Value = GameObject.Find("AIManager/EndPoint").transform;
            base.OnStart();

            role = GetComponent<Role>();
            liveAlertDistance = (float)behaviorTree.GetVariable("liveAlertDistance").GetValue();
            if (m_NavMeshAgent.component.isOnNavMesh)
            {
                m_NavMeshAgent.component.isStopped = false;
            }

            movePos = targetEndObj.Value.position;
            SetDestination(movePos);
        }

        public override TaskStatus OnUpdate()
        {
            
            Transform objectFound = null;
            target.Value = null;
            //var hitColliders = Physics.OverlapSphere(transform.position, viewDistance.Value, objectLayerMask);
            //if (hitColliders != null)
            //{
            //    for (int i = 0; i < hitColliders.Length; ++i)
            //    {
            //        if (hitColliders[i].gameObject.activeSelf == false)
            //        {
            //            continue;
            //        }

            //        Role role = hitColliders[i].gameObject.GetComponent<Role>();
            //        if (role == null || role.isDie)
            //        {
            //            continue;
            //        }
            //        target.Value = role.transform;
            //    }
            //}

            //if (target != null && target.Value != null)
            //{
            //    float sqrDistance = (target.Value.position - transform.position).sqrMagnitude;
            //    if (sqrDistance < viewDistance.Value)
            //    {
            //        //SetDestination(target.Value.position);
            //        targetObject.Value = target.Value;
            //        return TaskStatus.Success;
            //    }
            //}
            SetDestination(movePos);
            if (Vector3.Distance(transform.position, targetEndObj.Value.position) < 1.5f)
            {
                EventComponent eventCmpt = GameEntry.GetComponent<EventComponent>();
                eventCmpt.FireNow(this, new DefenseEventEscapeNum());
                RoleManager.Instance.DeleteRole(role);
            }
            //else
            //{
            //    SetDestination(targetEndObj.Value.position);
            //}

            return TaskStatus.Running;
        }

        public override void OnEnd()
        {
            base.OnEnd();
        }

        protected bool SetDestination(Vector3 destination)
        {
            NavMeshHit hit;
            bool has = NavMesh.SamplePosition(destination, out hit, 5, NavMesh.AllAreas);
            if (has && m_NavMeshAgent.component.isOnNavMesh)
            {
                m_NavMeshAgent.component.SetDestination(hit.position);
            }

            return true;
        }

        // Reset the public variables
        public override void OnReset()
        {
        }
    }
}