This changes up some of the possible warehouse spawn content. More book
options, couple of shield gens, slightly higher chance of some mats and
some other changes.
The big notable one is the chance of a big mob in the warehouse was
changed from 3% per round to 9% and the list for small and large mobs
was expanded. Particularly psirens were added, with a need to reduce the
spawn rate after the arc.
The warehouse spawn total was also reduced from 180 to 120, partly as a
test and to make the warehouse slightly less overloaded.
Repaths obj/machinery to obj/structure/machinery. **Note for
reviewers:** the only meaningful changed code exists within
**code/game/objects/structures.dm** and
**code/game/objects/structures/_machinery.dm**, largely concerning
damage procs. With the exception of moving airlock defines to their own
file, ALL OTHER CHANGES ARE STRICTLY PATH CHANGES.
Objects, _categorically_, are largely divided between those you can hold
in your hand/inventory and those you can't. Machinery objects are
already subtypes of Structures behaviorally, this PR just makes their
pathing reflect that, and allows for future work (tool actions, more
health/destruction functionality) to be developed without unnecessary
code duplication.
I have tested this PR by loading up the Horizon and dismantling various
machines and structures with tools, shooting guns of various types
throughout the ship, and detonating a bunch of explosions throughout the
ship.
