using BehaviorDesigner.Runtime.Tasks;
using Gameplay.AI;
using Gameplay.BT.Variables;
using Gameplay.Common;
using Gameplay.Level;
using Gameplay.Unit;

namespace Code.Scripts.Gameplay.BT.Task
{
    public class BTBeginPatrol : BehaviorDesigner.Runtime.Tasks.Conditional
    {
        public SharedBattleInfo SharedBattleInfo;

        private int _TargetCellIndex; 
        private int _lastTargetPointIndex; 
        private GameUnit _owner;
        public override void OnStart()
        {
            _owner = GameUnitManager.instance.infightUnits.Search(SharedBattleInfo.Value.ownerId);
            
            if (SharedBattleInfo.Value.PartolPointIndex == -1)
            {
                SharedBattleInfo.Value.PartolPointIndex = AIUtils.FindNearestPointInPatrolInfo(_owner, SharedBattleInfo.Value.PatrolInfos);
                _TargetCellIndex = LevelManager.Instance.CurrentLevel.Map.BlockPosition2TGSCellIndex(SharedBattleInfo.Value.PatrolInfos[SharedBattleInfo.Value.PartolPointIndex].patrolPoint);
                _lastTargetPointIndex = -1;
            }
        }

        public override TaskStatus OnUpdate()
        {
            if (SharedBattleInfo.Value.PartolPointIndex != _lastTargetPointIndex && !AIUtils.IsNeedStop(_owner))
            {
                _lastTargetPointIndex = SharedBattleInfo.Value.PartolPointIndex;
                _TargetCellIndex = LevelManager.Instance.CurrentLevel.Map.BlockPosition2TGSCellIndex(SharedBattleInfo.Value.PatrolInfos[SharedBattleInfo.Value.PartolPointIndex].patrolPoint);
                _owner.MoveTo(_TargetCellIndex, false);
                return TaskStatus.Running;
            }

            if (_owner.transData.cellIndex == _TargetCellIndex)
                return TaskStatus.Success;

            if (!_owner.statusData.isMoveing) // 没有移动表示路径错误，被控制，被阻挡，需要重新设置移动
                _lastTargetPointIndex = -1;

            return TaskStatus.Running;
        }
    }
}