Files
Bubberstation/code/datums/components
Emmett Gaines 7989178394 Makes canister leaking and blowing up use a component and element respectively (#59075)
I want to use this behavior on some other things so into a component and element it goes. Gas leaking is handled by a component so it can process whereas the object breaking and causing an explosion is handled by an element. Some minor changes were made so canisters were more consistent in leaking.
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Datum Component System (DCS)

Concept

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.

HackMD page for an introduction to the system as a whole.

See/Define signals and their arguments in __DEFINES\components.dm