Colosseum/Assets/Scripts/AI/BehaviorActions/Actions/SetTargetInRangeAction.cs

using System;
using Unity.Behavior;
using UnityEngine;
using Action = Unity.Behavior.Action;
using Unity.Properties;

[Serializable, GeneratePropertyBag]
[NodeDescription(name: "SetTargetInRange", story: "[거리] 내에 [대상이] 있는지 확인", category: "Action", id: "93b7a5d823a58618d5371c01ef894948")]
public partial class SetTargetInRangeAction : Action
{
    [SerializeReference]
    public BlackboardVariable<GameObject> Target;

    [SerializeReference]
    public BlackboardVariable<string> Tag = new BlackboardVariable<string>("Player");

    [SerializeReference]
    public BlackboardVariable<float> Range = new BlackboardVariable<float>(10f);

    protected override Status OnStart()
    {
        if (string.IsNullOrEmpty(Tag.Value))
        {
            return Status.Failure;
        }

        // 모든 타겟 태그 오브젝트 찾기
        GameObject[] targets = GameObject.FindGameObjectsWithTag(Tag.Value);
        
        if (targets == null || targets.Length == 0)
        {
            return Status.Failure;
        }

        // 가장 가까운 타겟 찾기
        GameObject nearestTarget = null;
        float nearestDistance = Range.Value; // Range 내에서만 검색

        foreach (GameObject potentialTarget in targets)
        {
            float distance = Vector3.Distance(
                GameObject.transform.position,
                potentialTarget.transform.position
            );

            if (distance < nearestDistance)
            {
                nearestDistance = distance;
                nearestTarget = potentialTarget;
            }
        }

        if (nearestTarget == null)
        {
            return Status.Failure;
        }

        Target.Value = nearestTarget;
        return Status.Success;
    }
}