using System.Collections.Generic;
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using UnityEngine;
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using System;
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using Cysharp.Threading.Tasks;
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public class GameObjectPoolManager : SingletonMonobehaviour<GameObjectPoolManager>
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{
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#if UNITY_EDITOR
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private bool m_ShowDebugPanel = false;
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private Vector2 m_ScrollPosition = Vector2.zero;
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private void OnGUI()
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{
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if (!m_ShowDebugPanel) return;
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GUILayout.BeginArea(new Rect(10, 10, 400, 600));
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GUILayout.BeginVertical("Box");
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m_ScrollPosition = GUILayout.BeginScrollView(m_ScrollPosition, GUILayout.Width(380), GUILayout.Height(580));
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GUILayout.Label("对象池调试面板", GUILayout.Height(30));
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GUILayout.Space(10);
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foreach (var poolEntry in m_PoolDict)
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{
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int prefabInstanceId = poolEntry.Key;
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GameObjectPool pool = poolEntry.Value;
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GUILayout.BeginVertical("Box");
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GUILayout.Label($"池名称: {pool.Prefab.name}");
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GUILayout.Label($"活跃对象数: {pool.m_ActiveHashSet.Count}");
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GUILayout.Label($"空闲对象数: {pool.m_FreeQueue.Count}");
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int count = m_PoolUsageFrequency.TryGetValue(prefabInstanceId, out int frequency) ? frequency : 0;
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GUILayout.Label($"使用频率: {count}");
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GUILayout.EndVertical();
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GUILayout.Space(5);
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}
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GUILayout.EndScrollView();
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GUILayout.EndVertical();
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GUILayout.EndArea();
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}
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[UnityEditor.MenuItem("Tools/对象池/显示调试面板")]
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private static void ToggleDebugPanel()
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{
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if (Instance != null)
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{
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Instance.m_ShowDebugPanel = !Instance.m_ShowDebugPanel;
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}
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}
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#endif
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// 池统计数据
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public Dictionary<int, PoolStats> PoolStatistics { get; private set; } = new Dictionary<int, PoolStats>();
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public class PoolStats
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{
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public int TotalObjects { get; set; }
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public int ActiveObjects { get; set; }
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public int FreeObjects { get; set; }
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public int UsageFrequency { get; set; }
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}
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// 更新池统计数据
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private void UpdatePoolStats()
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{
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if (m_PoolDict == null)
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return;
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foreach (var poolEntry in m_PoolDict)
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{
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int prefabInstanceId = poolEntry.Key;
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GameObjectPool pool = poolEntry.Value;
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if (!PoolStatistics.ContainsKey(prefabInstanceId))
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{
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PoolStatistics[prefabInstanceId] = new PoolStats();
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}
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PoolStats stats = PoolStatistics[prefabInstanceId];
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stats.TotalObjects = pool.m_ActiveHashSet.Count + pool.m_FreeQueue.Count;
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stats.ActiveObjects = pool.m_ActiveHashSet.Count;
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stats.FreeObjects = pool.m_FreeQueue.Count;
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stats.UsageFrequency = m_PoolUsageFrequency.TryGetValue(prefabInstanceId, out int frequency) ? frequency : 0;
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}
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}
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private Dictionary<int, GameObjectPool> m_PoolDict = null;
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// 不需要销毁的对象列表
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private List<int> dontDestoryGoInstIDList = null;
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private Transform m_TargetContainer;
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// 定期检查池的时间间隔（秒）
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private float m_PoolCheckInterval = 600f;
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// 记录每个池的使用频率
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private Dictionary<int, int> m_PoolUsageFrequency = new Dictionary<int, int>();
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//需要动态卸载的预制体，例如切换场景时
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public List<GameObject> needDestroyPrefabList = new List<GameObject>();
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public void Initialize()
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{
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if (m_PoolDict == null)
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{
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m_PoolDict = new Dictionary<int, GameObjectPool>();
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}
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if (!m_TargetContainer)
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{
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m_TargetContainer = new GameObject("Container").transform;
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m_TargetContainer.SetParent(transform);
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}
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if (dontDestoryGoInstIDList == null)
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{
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dontDestoryGoInstIDList = new List<int>();
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}
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// 启动定期检查池的协程
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CheckPoolUsage();
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}
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private async UniTask CheckPoolUsage()
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{
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while (true)
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{
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await UniTask.Delay(TimeSpan.FromSeconds(m_PoolCheckInterval));
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foreach (var poolEntry in m_PoolDict)
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{
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int prefabInstanceId = poolEntry.Key;
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GameObjectPool pool = poolEntry.Value;
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// 如果池的使用频率低于阈值，减少池的大小
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if (m_PoolUsageFrequency.TryGetValue(prefabInstanceId, out int usageCount) && usageCount < 5)
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{
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// 保留至少一个对象，避免频繁创建和销毁
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int targetSize = Mathf.Max(1, pool.m_FreeQueue.Count / 2);
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while (pool.m_FreeQueue.Count > targetSize)
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{
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GameObject obj = pool.m_FreeQueue.Dequeue();
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if (!dontDestoryGoInstIDList.Contains(obj.GetInstanceID()))
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{
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Destroy(obj);
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}
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}
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}
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// 重置使用频率
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m_PoolUsageFrequency[prefabInstanceId] = 0;
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}
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}
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}
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public void AddDontDestroyGoInstID(int id)
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{
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if (!dontDestoryGoInstIDList.Contains(id))
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{
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dontDestoryGoInstIDList.Add(id);
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}
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}
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public bool ExistPool(GameObject prefab)
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{
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if (prefab == null)
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{
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return false;
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}
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if (m_PoolDict.ContainsKey(prefab.GetInstanceID()))
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{
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return true;
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}
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return false;
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}
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/// <summary>
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/// 传入的为预制体，而非组件，否则会导致GetInstanceID管理混乱，每次实例化都会改变
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/// </summary>
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/// <param name="prefab"></param>
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/// <returns></returns>
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public GameObjectPool RequestPool(GameObject prefab)
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{
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if (prefab == null)
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{
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return null;
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}
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#if UNITY_EDITOR
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if (UnityEditor.PrefabUtility.GetPrefabAssetType(prefab) == UnityEditor.PrefabAssetType.NotAPrefab)
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{
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Debug.LogError($"{prefab.name}不是一个预制体！");
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return null;
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}
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#endif
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int _prefabInstanceId = prefab.GetInstanceID();
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GameObjectPool _pool = null;
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if (m_PoolDict.TryGetValue(_prefabInstanceId, out _pool))
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{
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return _pool;
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}
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_pool = new GameObjectPool(prefab);
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m_PoolDict[_prefabInstanceId] = _pool;
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return _pool;
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}
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public void CacheGameObject(GameObject prefab, int count, bool _prefabActive)
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{
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if (prefab == null)
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{
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return;
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}
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RequestPool(prefab).Cache(count, _prefabActive);
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}
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public GameObject RequestGameObject(GameObject prefab)
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{
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if (prefab == null)
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{
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return null;
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}
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#if UNITY_EDITOR
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if (UnityEditor.PrefabUtility.GetPrefabAssetType(prefab) == UnityEditor.PrefabAssetType.NotAPrefab)
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{
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Debug.LogError($"{prefab.name}不是一个预制体！");
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return null;
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}
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#endif
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return RequestPool(prefab).Request();
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}
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//特定情况下需要动态卸载的，如切换场景时
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public void UnLoadAll(bool force = false)
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{
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List<int> _removeList = new List<int>();
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foreach (var _pool in m_PoolDict.Values)
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{
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if (needDestroyPrefabList.Contains(_pool.Prefab))
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{
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_pool.Clear();
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_removeList.Add(_pool.PrefabInstanceId);
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}
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}
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for (int i = 0; i < _removeList.Count; ++i)
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{
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m_PoolDict.Remove(_removeList[i]);
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}
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}
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public class GameObjectPool
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{
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private GameObject m_Prefab = null;
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public GameObject Prefab
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{
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get
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{
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return m_Prefab;
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}
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}
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//预制体实例id，用于检索池
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public int PrefabInstanceId
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{
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get; private set;
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}
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public HashSet<GameObject> m_ActiveHashSet = new HashSet<GameObject>();
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public Queue<GameObject> m_FreeQueue = null;
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private int Pool_FreeList_Warning_Threshold = 10; //当空闲对象高于此值时，会进行日志输出提醒
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Action<GameObject> releaseCallBack;
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public string assetBundleName;
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public string assetName;
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internal protected GameObjectPool(GameObject prefab)
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{
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m_Prefab = prefab;
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PrefabInstanceId = m_Prefab.GetInstanceID();
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m_ActiveHashSet = new HashSet<GameObject>();
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m_FreeQueue = new Queue<GameObject>();
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}
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public void AddReleaseListener(Action<GameObject> _callBack)
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{
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releaseCallBack = _callBack;
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}
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public void RemoveReleaseListener()
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{
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releaseCallBack = null;
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}
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public void Cache(int count, bool _prefabActive)
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{
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GameObject _go;
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for (int i = 0; i < count; ++i)
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{
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_go = Instantiate(m_Prefab, Constants.Special_Hide_Position, Quaternion.identity);
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m_FreeQueue.Enqueue(_go);
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_go.transform.SetParent(Instance.m_TargetContainer);
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_go.transform.position = Constants.Special_Hide_Position;
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#if UNITY_EDITOR
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// 检查空闲列表数量是否超过阈值
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if (m_FreeQueue.Count > Pool_FreeList_Warning_Threshold)
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{
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Debug.LogWarning($"GameObjectPool {m_Prefab.name} 的空闲对象数量 ({m_FreeQueue.Count}) 超过阈值 ({Pool_FreeList_Warning_Threshold})，请检查是否需要清理。");
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}
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#endif
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var animator = _go.GetComponent<Animator>();
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if (animator != null)
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{
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animator.enabled = false;
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}
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_go.SetActive(_prefabActive);
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}
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}
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public GameObject Request()
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{
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GameObject _go = null;
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if (m_FreeQueue.Count > 0)
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{
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_go = m_FreeQueue.Dequeue();
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m_ActiveHashSet.Add(_go);
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// 统计池的使用频率
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if (Instance.m_PoolUsageFrequency.ContainsKey(m_Prefab.GetInstanceID()))
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{
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Instance.m_PoolUsageFrequency[m_Prefab.GetInstanceID()]++;
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}
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else
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{
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Instance.m_PoolUsageFrequency[m_Prefab.GetInstanceID()] = 1;
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}
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}
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if (_go == null)
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{
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_go = Instantiate(m_Prefab, Constants.Special_Hide_Position, Quaternion.identity);
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m_ActiveHashSet.Add(_go);
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}
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_go.transform.SetParent(null);
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_go.transform.localScale = Vector3.one;
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// 更新池统计数据
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Instance.UpdatePoolStats();
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return _go;
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}
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public void Release(GameObject go)
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{
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if (go == null)
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{
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return;
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}
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m_ActiveHashSet.Remove(go);
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m_FreeQueue.Enqueue(go);
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go.transform.SetParent(Instance.m_TargetContainer);
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go.transform.position = Constants.Special_Hide_Position;
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#if UNITY_EDITOR
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// 检查空闲列表数量是否超过阈值
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if (m_FreeQueue.Count > Pool_FreeList_Warning_Threshold)
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{
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Debug.LogWarning($"GameObjectPool {m_Prefab.name} 的空闲对象数量 ({m_FreeQueue.Count}) 超过阈值 ({Pool_FreeList_Warning_Threshold})，请检查是否需要清理。");
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}
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#endif
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if (releaseCallBack != null)
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{
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releaseCallBack(go);
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}
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// 更新池统计数据
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Instance.UpdatePoolStats();
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}
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public void ReleaseAll()
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{
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//释放 m_ActiveHashSet中 的GameObject，排除
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foreach (GameObject go in m_ActiveHashSet)
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{
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if (go != null)
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{
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m_FreeQueue.Enqueue(go);
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go.transform.SetParent(Instance.m_TargetContainer);
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go.transform.position = Constants.Special_Hide_Position;
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if (releaseCallBack != null)
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{
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releaseCallBack(go);
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}
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}
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}
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m_ActiveHashSet.Clear();
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// 更新池统计数据
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Instance.UpdatePoolStats();
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}
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public void Clear()
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{
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foreach (GameObject go in m_ActiveHashSet)
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{
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if (go != null)
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{
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if (!Instance.dontDestoryGoInstIDList.Contains(go.GetInstanceID()))
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{
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m_ActiveHashSet.Remove(go);
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Destroy(go);
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}
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}
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}
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#if UNITY_EDITOR
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if (m_ActiveHashSet.Count != 0)
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{
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Debug.LogWarningFormat("{0} 池清理后, 还有 {1} 个活跃对象. ", m_Prefab.name, m_ActiveHashSet.Count);
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}
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#endif
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Queue<GameObject> tempQueue = new Queue<GameObject>();
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while (m_FreeQueue.Count > 0)
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{
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GameObject obj = m_FreeQueue.Dequeue();
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if (Instance.dontDestoryGoInstIDList.Contains(obj.GetInstanceID()))
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tempQueue.Enqueue(obj);
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else
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Destroy(obj);
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}
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m_FreeQueue = tempQueue;
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#if UNITY_EDITOR
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if (m_FreeQueue.Count != 0)
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{
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Debug.LogWarningFormat("{0} 池清理后, 还有 {1} 个空闲对象. ", m_Prefab.name, m_FreeQueue.Count);
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// for (int i = 0; i < m_FreeList.Count; ++i)
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// {
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// Debug.LogWarningFormat(" |-- {0}", m_FreeList[i].name);
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// }
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}
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#endif
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if (IsEmpty())
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{
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m_Prefab = null;
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}
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if (!string.IsNullOrEmpty(assetBundleName) && !string.IsNullOrEmpty(assetName))
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{
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ResManager.Instance.UnloadAsset(assetBundleName, assetName);
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// ResManager.Instance.UnloadAssetBundle(assetBundleName, true, false);
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}
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}
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public bool IsEmpty()
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{
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return m_ActiveHashSet.Count == 0 && m_FreeQueue.Count == 0;
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}
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}
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}
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