//o(1)
public GameObject NextAvailableObject(Vector3 position, Quaternion rotation)
{
ObjectToPool po = null;
if (availableObjStack.Count > 0)
{
po = availableObjStack.Pop();
}
else if (fixedSize == false)
{
//increment size var, this is for info purpose only
poolSize++;
Debug.Log(string.Format("Growing pool {0}. New size: {1}", poolName, poolSize));
//create new object
po = NewObjectInstance();
}
else
{
Debug.LogWarning("No object available & cannot grow pool: " + poolName);
}
GameObject result = null;
if (po != null)
{
po.isPooled = false;
result = po.gameObject;
result.SetActive(true);
result.transform.position = position;
result.transform.rotation = rotation;
}
return(result);
}
//o(1)
private void AddObjectToPool(ObjectToPool po)
{
//add to pool
po.gameObject.SetActive(false);
availableObjStack.Push(po);
po.isPooled = true;
}
private ObjectToPool NewObjectInstance()
{
GameObject go = (GameObject)GameObject.Instantiate(ObjectToPoolPrefab);
ObjectToPool po = go.GetComponent <ObjectToPool>();
if (po == null)
{
po = go.AddComponent <ObjectToPool>();
}
//set name
po.poolName = poolName;
return(po);
}
public void ReturnObjectToPool(GameObject go)
{
ObjectToPool po = go.GetComponent <ObjectToPool>();
if (po == null)
{
Debug.LogWarning("Specified object is not a pooled instance: " + go.name);
}
else
{
if (poolDictionary.ContainsKey(po.poolName))
{
Pool pool = poolDictionary[po.poolName];
pool.ReturnObjectToPool(po);
}
else
{
Debug.LogWarning("No pool available with name: " + po.poolName);
}
}
}
//o(1)
public void ReturnObjectToPool(ObjectToPool po)
{
if (poolName.Equals(po.poolName))
{
/* we could have used availableObjStack.Contains(po) to check if this object is in pool.
* While that would have been more robust, it would have made this method O(n)
*/
if (po.isPooled)
{
Debug.LogWarning(po.gameObject.name + " is already in pool. Why are you trying to return it again? Check usage.");
}
else
{
AddObjectToPool(po);
}
}
else
{
Debug.LogError(string.Format("Trying to add object to incorrect pool {0} {1}", po.poolName, poolName));
}
}
