Update

Author: IntoTheDev

GlobalPool.cs

@@ -1,43 +1,30 @@
 using Sirenix.OdinInspector;
-using System;
 using System.Collections.Generic;
 using UnityEngine;
 
 namespace ToolBox.Pools
 {
-	[Serializable]
-	public class Pool
-	{
-		[SerializeField, AssetList, AssetsOnly] private Poolable _prefab = null;
+	[CreateAssetMenu(menuName = "ToolBox/Pool"), Required, AssetSelector]
+    public sealed class Pool : ScriptableObject
+    {
+		[SerializeField, AssetList, AssetsOnly, Required] private Poolable _prefab = null;
 		[SerializeField] private int _startCount = 0;
-		[SerializeField, SceneObjectsOnly] private Transform _holder = null;
 
 		private int _currentCount = 0;
 		private Queue<Poolable> _entities = null;
 
-		public Pool(Poolable prefab, int startCount, Transform holder)
-		{
-			_prefab = prefab;
-			_startCount = startCount;
-			_holder = holder;
-		}
-
+		[Button]
 		public void Fill()
 		{
 			_entities = new Queue<Poolable>(_startCount);
 			_currentCount = _startCount;
 
 			for (int i = 0; i < _startCount; i++)
 			{
-				Poolable entity = UnityEngine.Object.Instantiate(_prefab, _holder);
-				AddToPool(entity);
-			}
-
-			void AddToPool(Poolable newEntity)
-			{
-				newEntity.SetPool(this);
-				_entities.Enqueue(newEntity);
-				newEntity.gameObject.SetActive(false);
+				Poolable entity = Instantiate(_prefab);
+				entity.SetPool(this);
+				_entities.Enqueue(entity);
+				entity.gameObject.SetActive(false);
 			}
 		}
 
@@ -101,7 +88,7 @@ public void ReturnEntity(Poolable entity)
 			_entities.Enqueue(entity);
 			_currentCount++;
 
-			entity.transform.SetParent(_holder, false);
+			entity.transform.SetParent(null, false);
 			entity.gameObject.SetActive(false);
 		}
 
@@ -111,7 +98,7 @@ private Poolable TakeEntity()
 
 			if (_currentCount == 0)
 			{
-				entity = UnityEngine.Object.Instantiate(_prefab, _holder);
+				entity = Instantiate(_prefab);
 				entity.SetPool(this);
 
 				return entity;
@@ -121,7 +108,7 @@ private Poolable TakeEntity()
 
 			if (entity == null)
 			{
-				entity = UnityEngine.Object.Instantiate(_prefab, _holder);
+				entity = Instantiate(_prefab);
 				entity.SetPool(this);
 				_currentCount++;
 			}

GlobalPool.cs.meta

@@ -9,8 +9,6 @@ namespace ToolBox.Pools
 	[DisallowMultipleComponent]
 	public class Poolable : MonoBehaviour, IReactor
 	{
-		[SerializeField, TabGroup("Global Pool")] private GlobalPool _globalPool = null;
-
 		[SerializeField, TabGroup("Callbacks")] private Reactor _onBackToPool = null;
 		[SerializeField, TabGroup("Callbacks")] private Reactor _onBackFromPool = null;
 
@@ -27,12 +25,6 @@ public class Poolable : MonoBehaviour, IReactor
 
 		private void Awake()
 		{
-			if (_globalPool != null)
-			{
-				Pool = _globalPool.Pool;
-				_isPooled = true;
-			}
-
 			_onBackToPool.Setup();
 			_onBackFromPool.Setup();
 
@@ -55,13 +47,13 @@ public void ReturnToPool()
 
 			Pool.ReturnEntity(this);
 			_isEnabled = false;
-
-			for (int i = 0; i < _poolables.Length; i++)
-				_poolables[i].Reset();
 		}
 
 		public void ReturnFromPool()
 		{
+			for (int i = 0; i < _poolables.Length; i++)
+				_poolables[i].Reset();
+
 			_onBackFromPool.SendReaction();
 			_isEnabled = true;
 		}
@@ -86,6 +78,6 @@ private void OnPoolablesChange()
 		}
 
 		private IEnumerable<IPoolable> GetPoolables() =>
-			GetComponentsInChildren<IPoolable>();
+			GetComponentsInChildren<IPoolable>(true);
 	}
 }

LICENSE

@@ -10,10 +10,7 @@ MonoBehaviour:
   m_Enabled: 1
   m_EditorHideFlags: 0
   m_Script: {fileID: 11500000, guid: b1b86f0f7a2abb3438596be3b0b6018e, type: 3}
-  m_Name: TestPool
+  m_Name: BowTower
   m_EditorClassIdentifier: 
-  _pool:
-    _prefab: {fileID: -5867640059013084840, guid: 58be6d132003ec14087e25cfa3ceb8fb,
-      type: 3}
-    _startCount: 5
-    _holder: {fileID: 0}
+  _prefab: {fileID: 8418102157395063907, guid: 245a074ef02e7bc49be09dd22bda9aeb, type: 3}
+  _startCount: 25