* Fixes Baystation12/Baystation12/issues/17443 - Runtime in radiation.dm,30: illegal: sqrt(-2.857143)
* Updating radiation power to below zero should simply delete the source.
* Fixes at least one cause of Runtime in radiation.dm,41: Cannot read null.z in an effort to fix Baystation12/Baystation12/issues/17411
Shuttles now set themselves up upon being instantiated instead of relying on a monolithic proc in the shuttle controller.
Shuttles can now be defined more cleanly on a per-map basis, as well.
Accidentally fixes a broken admin shuttle.
* The vast majority of gas mixtures never use their `graphic` list. Prime candidate for making a lazy init list.
* While we are here, add nullchecks to ZAS's use of the graphic list a bit. /turf/update_graphics was technically already null safe, but its even better to not bother calling it at all right?
* Initializing a list in the type definition (of any type) incurs a hidden proc call ("init"). Simply by moving the init of the lists to /New() we speed up creation of /datum/gas_mixtures (which happens *often*)
* The list variables still get initialized by the time the instance is created, so this has zero impact on other code, its just starightup faster with no downsides.
Fixes a line printed about staying close to your patient printed in error, and makes syringes work on laying patients again.
The do_surgery overrides are from a bygone era.
Tested == yes
* For various reasons its best to not instantiate lists until they are actually going to be used, especially if there is a good chance that a given list variable might *never* be used during the lifetime of an object.
* These macros make it simple and concise to add remove and access entries in lazily created lists.
* Based on https://github.com/tgstation/tgstation/pull/25386
* Create macro for defining new subsystem types.
* Create PreInit proc to handle setup that needs to be done before the map loads
* Rename garbage_controller subsystem to garbage so it matches its global SSgarbage variable name.
* Every pipe in a pipeline has a reference to the pipeline. This needs to be cleared, both so the pipeline can be gc'd, and also so the pipes don't try and keep using the qdel'd pipeline.
* Same story for each pipeline in a pipe network, and each machine in a pipe network.
* Pipe networks are also in the pipe_networks global list. While the controller would detect and remove it from the list on the next tick, cleaning up ourselves is the responsible thing to do.
* /datum/reagents/Destroy() does everything /datum/reagents/delete() does and more, and delete() is called only from /obj/effect/Destroy() which is *itself* redundant with its parent /atom/movable/Destroy()
* Fixes https://github.com/VOREStation/VOREStation/issues/561
* Prevents multi-clicking from doing the construction steps multiple times (spawning multiple jugs, or emptying contents of jug multiplie times).
* Prevents after-attack from transferring reagent from jug to cooler twice when putting a jug on.
Yoshax