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863977e5fa
Converts most on_reagent_change calls to signals. Converts on_reagent_change to a signal handler. Expands the reagent exposure signals Add a setter proc and signal for reagent temperature Fixes adjust_thermal_energy not sending a temperature change event Makes min_temp and max_temp actually do something with adjust_thermal_energy
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.
See this thread for an introduction to the system as a whole.