From 3b290235f89b87b6e5502cda14da856a1772b03a Mon Sep 17 00:00:00 2001
From: NTG <iwnc2020@gmail.com>
Date: Thu, 14 Aug 2025 14:02:25 +0900
Subject: [PATCH] =?UTF-8?q?=EA=B2=8C=EC=9E=84=EB=A7=A4=EB=8B=88=EC=A0=80?=
 =?UTF-8?q?=20=EC=88=98=EC=A0=95?=
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씬에 인스턴스 중복 체크해서 생성할지 말지 결정
---
 .../_Scripts/GameFramework/GameManager.cs     | 55 +++++++++++++++----
 1 file changed, 44 insertions(+), 11 deletions(-)

diff --git a/Assets/_DDD/_Scripts/GameFramework/GameManager.cs b/Assets/_DDD/_Scripts/GameFramework/GameManager.cs
index c6579dfc5..bc7692cd5 100644
--- a/Assets/_DDD/_Scripts/GameFramework/GameManager.cs
+++ b/Assets/_DDD/_Scripts/GameFramework/GameManager.cs
@@ -1,4 +1,5 @@
 using System.Collections.Generic;
+using System.Threading.Tasks;
 using UnityEngine;
 
 namespace DDD
@@ -7,36 +8,66 @@ public class GameManager : Singleton<GameManager>
     {
         [SerializeField]
         private ManagerDefinitionSo _managerDefinitionSo;
-        
+
         private List<Singleton> _managerInstances;
-        
+
         protected async void Start()
         {
             base.OnAwake();
-            
+
+            EventBus.ClearAll();
+
+            _ = Initialize();
+        }
+
+        private async Task Initialize()
+        {
             if (_managerDefinitionSo == null)
             {
                 Debug.LogError("_managerDefinitionSo");
                 return;
             }
 
-            EventBus.ClearAll();
-            
-            // 매니저 초기화
             _managerInstances = new List<Singleton>(_managerDefinitionSo.ManagerClasses.Count);
 
-            foreach (var managerObject in _managerDefinitionSo.ManagerClasses)
+            // 매니저 클래스들을 순회하면서 씬에 존재하는지 확인하고 생성 또는 재사용
+            foreach (var managerPrefab in _managerDefinitionSo.ManagerClasses)
             {
-                var managerInstance = Instantiate(managerObject);
-                managerInstance.name = managerObject.name;
+                if (managerPrefab == null)
+                {
+                    Debug.LogWarning("매니저 프리팹이 null입니다. 건너뜁니다.");
+                    continue;
+                }
+
+                // 씬에 이미 해당 타입의 매니저가 존재하는지 확인
+                var existingManager = FindObjectOfType(managerPrefab.GetType()) as Singleton;
                 
-                _managerInstances.Add(managerInstance);
+                if (existingManager != null)
+                {
+                    // 이미 씬에 존재하는 경우 재사용
+                    Debug.Log($"매니저 {managerPrefab.GetType().Name}이(가) 씬에 이미 존재합니다. 재사용합니다.");
+                    _managerInstances.Add(existingManager);
+                }
+                else
+                {
+                    // 씬에 존재하지 않는 경우 새로 생성
+                    var newManagerInstance = Instantiate(managerPrefab);
+                    newManagerInstance.name = $"{managerPrefab.name}_Instance";
+                    Debug.Log($"매니저 {managerPrefab.GetType().Name}을(를) 새로 생성했습니다.");
+                    _managerInstances.Add(newManagerInstance);
+                }
+            }
+
+            // PreInit 단계 실행
+            foreach (var managerInstance in _managerInstances)
+            {
                 if (managerInstance is IManager manager)
                 {
                     manager.PreInit();
                 }
             }
-            
+
+            // Init 단계 실행 (비동기)
             foreach (var managerInstance in _managerInstances)
             {
                 if (managerInstance is IManager manager)
@@ -44,6 +75,8 @@ protected async void Start()
                     await manager.Init();
                 }
             }
+
+            // PostInit 단계 실행
             foreach (var managerInstance in _managerInstances)
             {
                 if (managerInstance is IManager manager)