* Ore silo will put machines off its level on hold, instead of disconnecting (#74990)
## About The Pull Request
There's a problem where people would try to rebuild a whiteship and use
an Ore Silo for it. However, it would automatically unlink everything
when moving, because it's checking for z level as soon as it changes z
level itself, before the Ore silo has 'moved' as well.
~~To fix this, I'm now only disconnecting ore silos when a shuttle
moves. This mostly does the same as before, but technically you can sync
an unwrenchable connected machine and bring it to space with you
(without using a shuttle) to stay connected, but I don't see this as a
problem, and my original point of the PR was to prevent Lavaland ORMs.~~
I decided against this, instead I've made it so machines that aren't on
a valid level (either both on the same z level or both on the station
level) will be considered 'on-hold', much like if the QM has set it to
hold through the silo directly. This means that machines no longer
disconnect from the Ore silo on moving, they just can't access the
materials in it. This affects gameplay in 2 ways:
1. You no longer need to resync when you bring the machine back
2. It won't unsync itself every time you move station z-level with its
silo (such as on a whiteship).
I also made disconnecting from an ore silo actually remove them from the
ore silo's list of connected machines.
## Why It's Good For The Game
Closes https://github.com/tgstation/tgstation/issues/69863
## Changelog
🆑
balance: Machines (such as ORM and Techfabs) will no longer unsync from
Ore silos when it moves Z-level, instead it will prevent materials from
being used, as if it was on hold.
/🆑
* Ore silo will put machines off its level on hold, instead of disconnecting
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Co-authored-by: John Willard <53777086+JohnFulpWillard@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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