* Adds error on qdeling callback, fixes errors this causes (#77850)
## About The Pull Request
You shouldn't ever qdel a callback. If you don't want to own it free
your ref (remove it from a list/set it to null). When all refs are
cleared it'll get cleaned up by byond itself
* Adds error on qdeling callback, fixes errors this causes
* Update cell_component.dm
* Update acid.dm
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Co-authored-by: LemonInTheDark <58055496+LemonInTheDark@users.noreply.github.com>
Co-authored-by: Giz <13398309+vinylspiders@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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