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Fast add/remove components via bit flipping. #356
Description
It's well known that adding/removing components is a slow operation in archetype-based ECS systems. One solution that Unity is working on for their ECS (also archetype-based) is using bit flipping to enable/disable components quickly at runtime.
Here's the CTO of Unity describing their approach:
https://forum.unity.com/threads/dots-skill-system-repo-available.894007/#post-5875804
I imagine something like this could be useful for Bevy.
Reacted by vultix, Jeremiah Senkpiel, Alex, PixelDust, qthree, Philipp Knecht, Michael K, Boxy, Bauxitedev, Anyere and 3 more
Activity
alice-i-cecile commentedon Feb 17, 2021
This should be (largely) addressed with the new sparse component storage that we're targeting for 0.5 :)
alice-i-cecile commentedon Mar 7, 2021
This was added via sparse set components in #1525 :D
alice-i-cecile commentedon Mar 11, 2021
This was not added in the end, and would be very useful for fast component add / removals. Making another issue for that topic though.
The adds are computationally quick, but do not allow you to insert or remove components within a single stage.