ObjectPool

The Unity object pooling can load and cache all objects inherited from UnityEngine.Object, and can easily expand the loading method, such as loading objects from AssetBundle. And contains CommonPool to cache other type objects.

Feature

• ObjectPool can load and cache all objects inherited from UnityEngine.Object.
• For CommonPool, build in ListPool, QueuePool, StackPool, HashSetPool, DictionaryPool to use.
• Unused assets/objects and PoolItem will auto destroy by DeleteTime. If DeleteTime is -1, they will not auto destroy.
• LoadMode.Resource to cache from Resources folder.
• LoadMode.Custom to cache from anywhere by call ObjectPool.Instance.RegisterCustomPoolItem function first.
• If you cache GameObject, you can implement ISpawnHandler and IDisposeHandler interfaces to listen spawn and dispose actions.

public interface ISpawnHandler
{
    void OnSpawn();
}
public interface IDisposeHandler
{
    void OnDispose();
}

Or you can add listener from ObjectPoolItemKey.SpawnEvent and ObjectPoolItemKey.DisposeEvent.

public event Action<ObjectPoolItemKey> SpawnEvent;
public event Action<ObjectPoolItemKey> DisposeEvent;

• Basically does not consume extra memory and GC.

Note

• If you want to cache Object from AssetBundle, maybe you can use AssetBundleManager(Open source) to manage your AssetBundles.

public ObjectPoolItem(Type assetType, ObjectPool.LoadMode loadMode, string bundleName, string assetName, DeleteTime deleteTime) : base(deleteTime)
{
    ...
    switch (mLoadMode)
    {
        case ObjectPool.LoadMode.Resource:
            OriginAsset = Resources.Load(assetName, assetType);
            break;
        case ObjectPool.LoadMode.Custom:
            break;
        // MARK: Use AssetBundleManager to load asset.
        case ObjectPool.LoadMode.AssetBundle:
            OriginAsset = AssetBundleManager.GetAsset(assetType, bundleName, assetName);
            break;
        // MARK: Add yourself load methods
    }
    ...
}