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

using System;
using Unity.Behavior;
using UnityEngine;
using Action = Unity.Behavior.Action;
using Unity.Properties;
using Colosseum.Combat;
using Colosseum.Enemy;

[Serializable, GeneratePropertyBag]
[NodeDescription(name: "SetTargetInRange", story: "[Range] 내에 [Tag] 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;
        }

        EnemyBase enemy = GameObject.GetComponent<EnemyBase>();
        if (enemy != null && enemy.UseThreatSystem)
        {
            GameObject threatTarget = enemy.GetHighestThreatTarget(Target?.Value, Tag.Value, Range.Value);
            if (threatTarget != null)
            {
                Target.Value = threatTarget;
                return Status.Success;
            }
        }

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

        foreach (GameObject potentialTarget in targets)
        {
            // 사망한 타겟은 제외
            IDamageable damageable = potentialTarget.GetComponent<IDamageable>();
            if (damageable != null && damageable.IsDead)
            {
                continue;
            }

            float distance = TargetSurfaceUtility.GetHorizontalSurfaceDistance(
                GameObject.transform.position,
                potentialTarget);

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

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

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