#if GRAPH_DESIGNER
using UnityEngine;
using Opsive.BehaviorDesigner.Runtime.Tasks;
using Opsive.BehaviorDesigner.Runtime.Tasks.Actions;
using BaseGames.Enemies;

namespace BaseGames.Enemies.AI
{
    /// <summary>
    /// 动作：随机游走（调用 NavAgent.SetRandomDestination）。
    /// 到达目的地后立即选下一个随机点，持续 Running。
    /// 常用于巡逻 fallback 或无路点的小怪。
    /// </summary>
    [TaskName("Walk Random")]
    [TaskCategory("BaseGames/Enemy/Movement")]
    [TaskDescription("随机游走：持续选取随机目的地导航（常用于待机巡逻兜底）")]
    public sealed class BD_WalkRandom : Action
    {
        [Tooltip("尝试选取随机点的次数")]
        [SerializeField] private int m_RetryCount = 5;

        private EnemyBase _enemy;

        public override void OnAwake() => _enemy = gameObject.GetComponent<EnemyBase>();

        public override void OnStart()
        {
            _enemy.SetAiPhase(AiPhase.Patrol);
            TryWalk();
        }

        public override TaskStatus OnUpdate()
        {
            if (_enemy == null) return TaskStatus.Failure;
            if (_enemy.Nav?.IsAtDestination() ?? true) TryWalk();
            return TaskStatus.Running;
        }

        public override void OnEnd() => _enemy?.StopMovement();

        private void TryWalk()
        {
            for (int i = 0; i < m_RetryCount; i++)
                if (_enemy.Nav?.WalkToRandom() ?? false) break;
        }
    }
}
#endif