* Experiment with replacing weakrefs in AI blackboard with deleting signals, ideally making it easier to work with and harder to cause hard deletes (#74791)
## About The Pull Request
Replaces weakref usage in AI blackboards with deleting signals
All blackboard var setting must go through setters rather than directly
## Why It's Good For The Game
This both makes it a ton easier to develop AI for, and also makes it
harder for hard deletes to sneak in, as has been seen with recent 515
prs showing hard deletes in AI blackboards
(To quantify "making it easier to develop AI", I found multiple bugs in
existing AI code due to the usage of weakrefs.)
I'm looking for `@ Jacquerel` `@ tralezab` 's opinions on the matter, also
maybe `@ LemonInTheDark` if they're interested
## Changelog
🆑 Melbert
refactor: Mob ai refactored once again
/🆑
* Experiment with replacing weakrefs in AI blackboard with deleting signals, ideally making it easier to work with and harder to cause hard deletes
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Co-authored-by: MrMelbert <51863163+MrMelbert@users.noreply.github.com>
Loosely adapted from /vg/. This is an entity component system for adding behaviours to datums when inheritance doesn't quite cut it. By using signals and events instead of direct inheritance, you can inject behaviours without hacky overloads. It requires a different method of thinking, but is not hard to use correctly. If a behaviour can have application across more than one thing. Make it generic, make it a component. Atom/mob/obj event? Give it a signal, and forward it's arguments with a SendSignal() call. Now every component that want's to can also know about this happening.
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