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自定义泛型对象池

封装泛型类

public abstract class MyPool<T> : MonoBehaviour where T :Component
{[SerializeField] protected T prefab; // 生成的预制体[SerializeField] protected int defaultNum; // 池子的大小protected Queue<T> pool = new Queue<T>(); // 队列存储池子protected bool IsPoolEmpty() => pool.Count == 0;protected bool IsPoolFull() => pool.Count > prefab;// 对象池四件套protected virtual T OnCreateItem() => Instantiate(prefab, transform);protected virtual void OnGetItem(T obj) => obj.gameObject.SetActive(true);protected virtual void OnReleaseItem(T obj) => obj.gameObject.SetActive(false);protected virtual void OnDestroy(T obj) => Destroy(obj.gameObject);// 用来获得对象后初始化一些信息protected abstract void InitializedObj(T obj); protected T Get(){T obj;if (IsPoolEmpty()) obj = OnCreateItem();else{obj = pool.Dequeue();OnGetItem(obj);}InitializedObj(obj);return obj;}protected void Release(T obj){if (IsPoolFull()) OnDestroy(obj);else{pool.Enqueue(obj);OnReleaseItem(obj);}}}

例子

BoxPool：

public class BoxPool : MyPool<Box> 
{public float IntervalTime = 0.1f;void Start(){StartCoroutine(ContinueCreateBox());}// 不断生成对象private IEnumerator ContinueCreateBox(){while (true){Box box = Get(); // 获得出来使用yield return new WaitForSeconds(IntervalTime);}}// 重写创建对象方法，添加委托protected override Box OnCreateItem(){Box box = base.OnCreateItem();box.SetBackDestroy(() => {Release(box);});return box;}// 完成抽象方法，初始化信息protected override void InitializedObj(Box obj){obj.transform.position = transform.position + Random.insideUnitSphere * 2f; // 半径2内随机 obj.transform.rotation = Quaternion.identity;obj.GetComponent<Rigidbody>().velocity = Vector3.zero; // 重置刚体速度，否则会越掉越快}}

Box：

public class Box : MonoBehaviour
{public UnityAction backDestroy;private float intervalTime = 1.5f;private float nowTime;private void Update() {nowTime += Time.deltaTime;if (nowTime > intervalTime){nowTime = 0;backDestroy?.Invoke();}}public void SetBackDestroy(UnityAction back){backDestroy = back;}
}

使用Unity自带对象池