UIFramework之對象池的使用

UIFramework之對象池的使用

在遊戲開發中，像子彈這類物體會被頻繁的創建，然後被銷燬，這樣的操作對遊戲性能也會造成嚴重的浪費。所以對象池的使用，可以減少需要頻繁創建銷燬的物體的操作，達到對性能的優化。

/*
* Name: ObjectPoolManager.cs
* Function: Object Pool Manager Class. 
* 
* Ver     Date                Name                            Change Content
* ────────────────────────────────────────────────────────────────────────────
* V1.0.0  20170430    http://blog.csdn.net/husheng0      Creat ObjectPoolManager.cs
* 
* Copyright (c). All rights reserved.
* 
*/
using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using System;
/// <summary>
/// Object Pool Manager
/// </summary>
public class ObjectPoolManager : MonoSingletonManager<ObjectPoolManager>
{
    private Dictionary<Type, Stack<MonoBehaviour>> ObjectDic 
        = new Dictionary<Type, Stack<MonoBehaviour>>();
    /// <summary>
    /// Get or Great Object From Pool
    /// </summary>
    /// <typeparam name="T">Type</typeparam>
    /// <param name="objectName">object Name</param>
    /// <returns>Type</returns>
    public T GetObjectFromPool<T>(string objectName) 
        where T :MonoBehaviour,IPoolObject,new()
    {
        Type type = typeof(T);
        object obj = null;
        T ctrl = null;
        if (ObjectDic.ContainsKey(type))
        {
            if (ObjectDic[type].Count == 0)
            {
                obj = GameObject.Instantiate(Resources.Load(objectName));
                ctrl = ((GameObject)obj).GetComponent<T>();
            }
            if (ObjectDic[type].Count > 0)
            {
                obj = ObjectDic[type].Pop();
                ctrl = (T)obj;
            }
        }
        else
        {
            obj = GameObject.Instantiate(Resources.Load(objectName));
            ctrl = ((GameObject)obj).GetComponent<T>();
        }
        ctrl.gameObject.SetActive(true);
        if(ctrl!=null)ctrl.Spawn();
        return ctrl;
    }
    /// <summary>
    /// Disappear Object To Pool
    /// </summary>
    /// <typeparam name="T">Type</typeparam>
    /// <param name="ctrl">object</param>
    /// <param name="objCount">count</param>
    public void DisappearObjectToPool<T>(T ctrl,int objCount)  
        where T : MonoBehaviour,IPoolObject, new()
    {
        Type type = typeof(T);
        if (!ObjectDic.ContainsKey(type))
        {
            ObjectDic.Add(type, new Stack<MonoBehaviour>());
        }
        ctrl.UnSpawn();
        ctrl.gameObject.SetActive(false);
        if (ObjectDic[type].Count < objCount)
        {
            ObjectDic[type].Push((MonoBehaviour)ctrl);
        }
        else
        {
            GameObject.Destroy(ctrl.gameObject);
        }
    }
    /// <summary>
    /// clear pool
    /// </summary>
    public void ClearPool()
    {
        foreach (KeyValuePair<Type,Stack<MonoBehaviour>> tempStack in ObjectDic)
        {
            while(tempStack.Value.Count > 0)
            {
                GameObject.Destroy(tempStack.Value.Pop().gameObject);
            }
        }
    }
}

public interface IPoolObject
{
    /// <summary>
    /// init
    /// </summary>
    void Spawn();
    /// <summary>
    /// Finallize
    /// </summary>
    void UnSpawn();
}

using UnityEngine;
using System.Collections;

public class Bullet : MonoBehaviour, IPoolObject
{
    public Bullet() {
    }
    public void Spawn()
    {
        Debug.Log("----->Spawn");
    }

    public void UnSpawn()
    {
        Debug.Log("----->UnSpawn");
    }
}

using UnityEngine;
using System.Collections;
using System.Collections.Generic;

public class Test : MonoBehaviour
{
    private const string PerfabName = "Bullet";
    //限定對象池緩存數目
    private int count = 3;

    private List<Bullet> bulletList = new List<Bullet>();
    void OnGUI()
    {
        if (GUILayout.Button("Great Bullet"))
        {
            for (int i = 0; i < 5; i++)
            {
                Bullet bullet = ObjectPoolManager.Instance.GetObjectFromPool<Bullet>(PerfabName);
                bulletList.Add(bullet);
            }
        }
        if (GUILayout.Button("Disapper Bullet"))
        {
            for (int i = 0; i < bulletList.Count; i++)
            {
                ObjectPoolManager.Instance.DisappearObjectToPool<Bullet>(bulletList[i], count);
            }
            bulletList.Clear();
        }
        if (GUILayout.Button("Distroy All"))
        {
            ObjectPoolManager.Instance.ClearPool();
        }
    }
}

點擊不同的Button，會發現，Bullet.cs的Spawn();UnSpawn();順利執行。