koobas.hobune.stream
Find all components of specific type, as fast as possible
Since FindObjectsOfAllType iterates all components, I implement this:
public class CachedBehaviour<T> : MonoBehaviour where T : CachedBehaviour<T>
{
public static readonly HashSet<T> cache = new HashSet<T>();
protected virtual void Awake() => cache.Add((T)this);
protected virtual void OnDestroy() => cache.Remove((T)this);
}
I write a test to iterate 200 objects for 100 times, modifying corresponding gameobjects' transform. there are about 100000 objects in the scene.
FindObjectsOfType<CustomType>costs nearly 2sec for one frame.CachedBehaviour<CustomType>.cachecosts 4ms per frame.Change the specific componet from
CustomTypeto builtinSpriteRenderer,FindObjectsOfTypeuses only up to 0.4ms per frame.
So there is a faster way for built-in components? How does it work? Can I make use of it?
