Unity ObjectPool 物件池

再生成物件時 常常要大量創建跟銷毀
這樣很浪費效能 (比如說子彈之類的)

比較合理的做法可以做一個物件池
來回收資源再利用 (資源回收?)~

程式碼:

using UnityEngine;

using System.Collections;

using System.Collections.Generic;

using System;



public class ObjectPool

{

 public Transform _parent = null;



 private Queue<GameObject> _pool = new Queue<GameObject>();

 private GameObject _prefab = null;



 public ObjectPool(GameObject prefab, Transform parent = null)

 {

  _parent = parent;

  _prefab = prefab;

 }



 public GameObject Spwan()

 {

  GameObject result = null;



  if (_pool.Count > 0)

   result = _pool.Dequeue();

  else

   result = UnityEngine.Object.Instantiate(_prefab);



  result.gameObject.SetActive(true);



  if (_parent)

   result.transform.SetParent(_parent);



  return result;

 }



 public T Spwan<T>() where T : Component

 {

  return Spwan() as T;

 }



 public void Despwan(GameObject go)

 {

  _pool.Enqueue(go);

  go.SetActive(false);

 }
}

使用方式

_objectPool = new ObjectPool(_prefab, _parent);

var go = _objectPool.Spwan(); -> 拿出來用 , 如果沒有的話 幫妳複製一個新的

_objectPool.Despwan(go); -> 不要用的東西丟回去池子裡