# Object Poolers

RSB uses object poolers to handle spawning/instantiating prefabs that will be used during simulation. These prefabs can be bullet tracers, in-game trajectory renderers, hit particles etc. In order to safely handle object instantiation in an optimized manner, RSB makes use of **Object Poolers.**  Create a new empty game object in your scene and name it **Tracer Pooler.** We will later on use this object to pool **tracers**, visualized objects simulating bullet tracers. Add the component **ObjectPooler.cs** on it.

![ObjectPooler.cs settings.](https://lh3.googleusercontent.com/QALew9wrvrQvzitvpUBlzHY65LVIlMveQ0c-7--tK0bmFnAbhioAgjU-Nio45RUpYDImKIAJFpogplpVBdnFv9a-qkxliBlyDiJQo9DQc8X_KXkpqkzfoP-0m15pebHr_J953sn4)

You need to assign the **Pooled Object** field as a prefab in your project folders. Navigate to **InanEvin>Realistic Sniper And Ballistics>Objects>BulletTracer** folder and drag & drop the tracer prefab into the slot. You can leave the other settings as default. What this will do is that when you start your scene, this script will instantiate **Pooled Amount** of bullet tracers in awake, disable them all and keep them in a list. Later on, our system will request a new tracer object whenever it is needed, and this script will return an available one from the list, without instantiating. This way, we delegate the instantiation of prefabs to the **Awake(),** saving us the runtime performance drop of instantiating. The same approach will be used on any other type of instantiation, for in-game trajectory renderers, hit effects, muzzle flashes etc.