【Unity】简易对象池

DomDomm · 发表于 2022-3-26 09:28

using System;using System.Collections;using System.Collections.Generic;using UnityEngine;public class ObjectPool<T> where T : new(){ /// <summary> /// 对象初始化方法 /// </summary> public Func<T> FuncGetNewObject; /// <summary> /// 对象重用时派发事件 /// </summary> public Action<T> OnEventReuse; /// <summary> /// 对象回收时派发事件 /// </summary> public Action<T> OnEventRecycle; /// <summary> /// 对象销毁时派发事件 /// </summary> public Action<T> OnEventDestroy; /// <summary> /// 对象池 /// </summary> protected Queue<T> pool; /// <summary> /// 对象池大小 /// </summary> public int PoolCount { get { return pool.Count; } } /// <summary> /// 对象池构造方法 /// </summary> public ObjectPool() { pool = new Queue<T>(); } /// <summary> /// 获取一个对象，优先从池子里取 /// </summary> /// <returns></returns> public T GetOne() { if (pool.Count > 0) { T obj = pool.Dequeue(); OnEventReuse?.Invoke(obj); return obj; } else { return CreateInstance(); } } /// <summary> /// 回收一个对象到池子里 /// </summary> /// <param name="obj"></param> public void Recycle(T obj) { if (obj == null) return; pool.Enqueue(obj); OnEventRecycle?.Invoke(obj); } /// <summary> /// 清理对象池 /// </summary> public void Clear() { while (PoolCount > 0) { var obj = pool.Dequeue(); OnEventDestroy?.Invoke(obj); } } /// <summary> /// 创建一个新的对象，如果没有指定创建方法，会默认new一个 /// </summary> /// <returns></returns> protected T CreateInstance() { if (FuncGetNewObject != null) { return FuncGetNewObject(); } else { return new T(); } }}
下面是使用方法
using System.Collections;using System.Collections.Generic;using UnityEngine;[System.Serializable]public class TestData{ public int count;}public class ObjectPoolTest : MonoBehaviour{ ObjectPool<TestData> pool; public List<TestData> testDatas = new List<TestData>(); private void Start() { int index = 0; pool = new ObjectPool<TestData>(); pool.FuncGetNewObject += () => { TestData t = new TestData(); t.count = index; index++; return t; }; } private void Update() { if (Input.GetKeyDown(KeyCode.Q)) { for (int i = 0; i < 10; i++) { var data = pool.GetOne(); testDatas.Add(data); } Debug.Log(pool.PoolCount); } if (Input.GetKeyDown(KeyCode.W)) { var data = pool.GetOne(); testDatas.Add(data); Debug.Log(pool.PoolCount); } if (Input.GetKeyDown(KeyCode.E)) { var data = testDatas[testDatas.Count - 1]; testDatas.Remove(data); pool.Recycle(data); Debug.Log(pool.PoolCount); } }}

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