feat: 드로그 공통 보스 BT 프레임워크 정리

Assets/_Game/Scripts/AI/BehaviorActions/Actions/RefreshPrimaryTargetAction.cs

@@ -0,0 +1,46 @@
+using System;
+
+using Colosseum.Enemy;
+
+using Unity.Behavior;
+using Unity.Properties;
+using UnityEngine;
+
+using Action = Unity.Behavior.Action;
+
+/// <summary>
+/// 보스의 주 대상을 갱신하는 공통 Behavior Action입니다.
+/// </summary>
+[Serializable, GeneratePropertyBag]
+[NodeDescription(
+    name: "Refresh Primary Target",
+    story: "보스 주 대상을 [Target]으로 갱신",
+    category: "Action",
+    id: "b7dbb1fc0c0d451795e9f02d6f4d3930")]
+public partial class RefreshPrimaryTargetAction : Action
+{
+    [SerializeReference]
+    public BlackboardVariable<GameObject> Target;
+
+    protected override Status OnStart()
+    {
+        EnemyBase enemyBase = GameObject.GetComponent<EnemyBase>();
+        if (enemyBase == null)
+            return Status.Failure;
+
+        GameObject currentTarget = Target != null ? Target.Value : null;
+        float aggroRange = enemyBase.Data != null ? enemyBase.Data.AggroRange : Mathf.Infinity;
+        GameObject resolvedTarget = enemyBase.GetHighestThreatTarget(currentTarget, null, aggroRange);
+
+        if (resolvedTarget == null)
+        {
+            BossCombatBehaviorContext context = GameObject.GetComponent<BossCombatBehaviorContext>();
+            resolvedTarget = context != null ? context.FindNearestLivingTarget() : null;
+        }
+
+        if (Target != null)
+            Target.Value = resolvedTarget;
+
+        return resolvedTarget != null ? Status.Success : Status.Failure;
+    }
+}