Andengine - Object pool or generic pool optimisation

Question

I am creating a game which generates many sprites at some point such as bullets. I am using object pooling which is generic pool in andengine. But the problem I am facing is it lags when the object are created for the first time. As for the first time , when the object is attached to scene. It lags when I am attaching 100 sprites at a time.

So I was thinking if its possible to load all the required objects and load it to the pool while in loading scene.

for now my code is as follows..

bullets = bullet_pool.obtainPoolItem();

if(!bullets.hasParent())
    {
    Presentscene.attachChild(bullets);
    }

Please suggest me some ideas.

Can I load a 100 objects (sprite) in the pool before the game, So that It wont lag in the middle of the game to create objects fresh for the pool.

Answer 1

You can pre-load the amount of bullets you want during the loading sequence of the game. Something like this:

private void preloadBullets(){
    Bullet[] bulletArr = new Bullet[1000];
    // Create the new bullets
    for (int i=0; i<1000; ++i){
        bulletArr[i] = bullet_pool.obtainPoolItem();
    }
    // Recycle all bullets
    for (int i=0; i<1000; ++i){
        bullet_pool.recyclePoolItem(bulletArr[i]);
    }
}

This way, if you call preloadBullets before your game runs, you'll have 1,000 bullets recycled in the pool for fast item obtaining.