UnityPooling

An optimized approach object pooling.

How to use

you can find a pratical example inside this repository in PoolingScene scene

1 - Create a class that extends PoolingObject and, if you wish, implement its virtual members (OnRelease and OnCollect)

public class ObjectExample : PoolingObject {
    private Renderer mRenderer;
    private MaterialPropertyBlock mPropBlock;

    void Awake()
    {
        mPropBlock = new MaterialPropertyBlock();
        mRenderer = GetComponent<Renderer>();
    }

    public override void OnCollect()
    {
        mRenderer.GetPropertyBlock(mPropBlock);
        mPropBlock.SetColor("_Color", Random.ColorHSV());
        mRenderer.SetPropertyBlock(mPropBlock);

        Invoke("OnRelease", 2f);

        base.OnCollect(); 
    }
}

2 - Create a class to initiate the Pooling and call Collect whenever you need an instance of T

public class PoolingExample : MonoBehaviour {
    public GameObject referenceObject;

    private Pooling<ObjectExample> mPooling = new Pooling<ObjectExample>();

    void Start () {
        mPooling.Initialize(10, referenceObject, transform);      
    }

    void Update () {
        if(Input.GetKeyDown(KeyCode.Space))
        {
          var o = mPooling.Collect();
          o.transform.position = new Vector3(Random.Range(-13f, 13f), Random.Range(-6.5f, 6.5f), 2.66f);
        }
    }
}

Pooling< T > public overview

Properties

name	type	description
createMoreIfNeeded	bool	boolean to control if the system can create more objects if needed. Its true by default.
OnObjectCreationCallBack	delegate ObjectCreationCallback	callback triggered whenever a new object is created, send T as parameter

Methods

pooling.Initialize

• Description: Initiate the pooling, creating amount objReference and attaching T to the object.

• Parameters:

name	type	description
amount	int	initial amount to be created.
refObject	GameObject	a reference of the object that will be instantiated and handled by the pool.
parent	Transform	the parent of the instantiated object. set null if creating in root.
worldPos	Vector3	the initial position for instantiated object.
startState	int	the initial state for instantiated object, if true, it will call OnCollect when instantiating each object, if false, OnRelease

pooling.Collect

• Description: Returns an instance of T object that is not currently being used.

• Parameters :

name	type	description
parent	Transform	if you need to change the parent of the object, do it here.
position	Vector3	position of the object
localPosition	bool	if true, position will be int local space, else, it will be world space.

dynamicScroll.Release

• Description: Releases the object.

• Parameters :

name	type	description
obj	T	Releases the object.

dynamicScroll.GetAllWithState

• Description: Returns a list with objects either being used or not being used.

• Parameters :

name	type	description
active	bool	if true, return a List<T> of actived objects, else, unused objects.