This PR is mostly about fixing body/cryo bag layering issues.
Currently live and annoying to try and treat around:

Currently, bags are are below roller beds when first deployed. If
buckled and unbuckled, they are then above, because of the + 0.1 on
buckling.
If buckled on a roller bed, dragged, and then unbuckled, they are then
above player mobs, because of the `layer + 1` on roller bed `Move()`
proc, which also doesn't get reset. I removed this +1 on Move() because
it was older than the +0.1 and seems to serve the same purpose.
The +0.1 did not have a method of reverting to the original buckled
atom's layer, so I added a var and check to handle that.
I also changed bullet casing's layer to `BELOW_TABLE_LAYER` with the
intent of not having them on top of stasis bags and roller beds, because
it causes issues as someone trying to treat wounded after a firefight.
Changing bullet casing's layer does have a consequence of putting
bullets underneath, for example, the soil in the public garden. Putting
the soil on `BELOW_TABLE_LAYER` would fix this, but with the consequence
of having the bushes be on top, making clicking the soil difficult for
farming purposes. Adding bushes to that layer causes consequences with
side window layering (like on deck three outside the public lounge.)
For this PR I only adjusted the bullet casing layer. I'm sure it has
other unintended layering interactions. Let me know if it would be
better to leave them where they are or on some other layer.
Current changes in PR: Bullets under soil/roller beds/stasis bags.

(Example of why making bullets on top of soil is difficult) Screenshot
shows both bullets and the soil being `BELOW_TABLE_LAYER` with bushes on
top, as a reference. PR Currently has bullets underneath soil.

Refactored hitby to be in line with TG's version.
Refactored item weight defines to a more clear naming scheme, also in
line with TG's version.
Refactored how the movement bumps are handled, ported signals to handle
them, in preparation for the movement update.
Fixed disposal hit bouncing the hitting atom on the wall.
Items do not push other items anymore if they are tiny.
* pain
* sadfas
* sdfa
* sdfasf
* sfa
* sdf
* might the lord have mercy on our soul
* i cri everidai
* adeste fideles
* sdf
* where will this lead, what's coming next, from your inventions
* dear lord
* gjvhk
* i cri everidai
* fsgf
* sdfa
* sdaf
* hiuhi
* SDQL2 update
* fix that verb
* cl
* fix that
* toworld
* this is pointless
* update info
* siiiiick..
* vv edit update
* fix that
* fix editing vars
* fix VV
* Port the /TG/ globals controller.
* part 1
* part 2
* oops
* part 3
* Hollow Purple
* sadas
* bsbsdb
* muda na agaki ta
* ids 1-15
* 16-31
* 41-75
* bring me back to how things used to be before i lost it all
* the strength of mayhem
* final touches
* cl
* protect some vars
* update sdql2 to use glob
* stuff?
* forgot that is not defined there
* whoops
* observ
* but it never gets better
* a
---------
Co-authored-by: Matt Atlas <liermattia@gmail.com>
Made it so items get their pixel x/y reset on pickup.
Thrown items now also get their pixel placement slightly randomized.
Tweaked the center of mass on a boatload of items to be more accurate to their sprite art.
Replaced a bunch of randomized pixel placement code into a unifying proc; randpixel_xy() that uses an item's randpixel var.
This PR will lead us towards the Promised Day, for in its wake there shall be much celebration and ecstasy as this world becomes a world suitable for developer hegemony. The first strike is thusly;
All << is converted into to_chat().
* Base work for the unathi robot subspecies.
* Adds metabolism species, kidney vars, and the robot unathi organs.
* Moves some action buttons to organs, pretty much a bay port right now. Todo: the unathi and alien stuff should also go here.
* First autakh implant power.
* Fixes the organs action button this time.
* Finishes more implants, and interactions with flashs and vaurca.
* Prepare for great changes.
* Drops the real bomb, boss.
* He who fights with monsters.
* Far more work into augments and limb removing powers.
* Limb verbs should be good now.
* A LOT of work into the assited organ, allowing it to bleed and etc, as well adding a new chem that will stop bleeding in their case.
* Probably the last work on implants.
* Some extra touches.
* Some tweaks to the species.
* More fixes and adds kyre's sprites.
* More runtime fixes.
* Fixes the species name too.
* Fixes travis.
* Updates this file too to work with the new tools procs.
* Adds changelog
* Fixed changelog.
* Unathi hair and lore description.
* Some tweaks to this too.
* Locks away them for now, they will be released after we got all the events and etc done.
* Changes this chemical.
* Fixes an airlock runtime.
* Adds the non scan flag to the autakh, mostly due to some bizzare interactions with changelings and cloning.
* Organs removal changes; can't take out the organ if it is too damage.
* Restricts them back again.
* Robotic organs now have the proper icons and names.
* Adds sprites for their organs and some extra tweaks.
* Fixes this missing icon.
* emp should also now hurt assited organs.
* Tweaks more organ related things.
* Fixes the head not being properly set as well.
* Fixes their flags.
* fixes the flag for real this time.
* Poze's review.
* Changes the au'takh organ buttons to don't be animated.
* Helps with adminbus or something.
* Fowl's requested changes.
* Fixes a typo.
* Robotic limb's brute and burn mods are now controlled by the limb model.
* Fowl's changes once more.
* Stops some spam.
* More grammar.
* No eal.
* Skull's review.
changes:
Blood overlays are now cached and do not involve world iteration.
Moved every global icon cache I could find into a new SS for organization & easier debugging. SS does not fire or init.
* Replace SSingulo with SScalamity; processing cleanup
- SScalamity now handles blobs as well as singularity-types.
- Processing subtypes have been simplified to not require a stop_processing definition.
* this is probably important
* Remove cascade disabling SSgarbage
* Fixed a bug where dust() did not qdel the target mob
* Misc fixes
* Fix decals surviving break-to-plating
* Subsystem flag tweaks
* Apparently subsystems are new'd before config is.
* Fix paper icons
* Speculative fix for insane lag
* Better machinery stat
* Make organs not use SSoverlay
* Misc bugfixes & tweaks
* Nightmode fixes
* Changelog for SMC
* Port /tg/'s improved MC crash handling
* Add some more SS Recover() procs
* supply_controller -> SScargo
* More New() -> Initialize()
* pAI and robot construction overlays
* Fix cargo unit tests
* Merge the DMM Suite's atom/New() into atoms_init
* Lighting pre-baking
* Lighting initialization logging
* Fix some bad SS init orders
* Fix SSlighting logging; rename Processes to MC
* Speculative fix for insane GC lag
* Prebaked openturf/icon_smooth & fix lighting prebake
* SS init status; SSatoms LATEQDEL
* Fix bug with MC init stat panel
* Fix parallax
* Misc
* Ignore SS_NO_DISPLAY during init
* apparently this is important
* REEEEEE
* Image GC fixes; broadcaster radio-new sanity
* RCON Cleanup
* Move pAI recruiter into subsystem
* Move global solars list into sun subsystem
* Make chickens not use a global
* Demote SSdisposals to SS_BACKGROUND; garbage-debug cleanup
* Speed up space init a little
* Fix bad timer flags on floor drying
* Subsystem panic-restart verb for mins
* Explosion speedup
* Minor subsystem & MC logging tweaks
* SSopenturf improvements
* Make pipenet actually initialize (whoops)
* Minor tweaks
* Implement lighting rounding
* comments are hard okay
* Minor lattice tweaks
* Fix some timer issues & better closet init
* Timer sanity
* Request console tweaks + Storage init sanity
* Minor SSmachiner RCON improvements
* Further reduce world-start timer count
* Standardize subsystem logging
* Garbage hard delete profiling from /tg/
* Timer hang detection & recovery
* Log machines that sleep in process() and fuck up SSmachinery
* Fix an issue with external airlocks sleeping in process()
* Failsafe logging
* Minor tweaks
* Revert "Request console tweaks + Storage init sanity"
This reverts commit 98d3579e35.
* Re-implement RC changes
* Fix SQL FT saving
* Fix SSmachinery sleep in disposals
* Minor SS tweaks
* Paper fixes
* Blood drying fixes
* Merge gameticker and SSticker
* Minor global list init cleanup
* Lagcheck biogenerator & bags
* Tweak SScargo init order; RIG Initialize()
* Caching tweaks
* Remove rogue comma
* Initialize fixes
* Lighting destroy cleanup
* Fix emagging airlocks
* Initial SSicon implementation
* Tweaks & Fixes
* Fire + Air alarm queued icon updates
* Overlays + Queued icon cleanup
* Runtime & background fixes
* Kill some meaningless set statements
* Kill some image qdels
* Bump up lighting rounding val
* Fix adv. scanner destroy runtimes
* Remove unneeded icon update limiting
* Move icon smoothing into helpers
* Show a warning if DM 510 compiles without memory leak hack enabled
* Re-organize subsystems & MC defines a little
* Airlock SFX
* Log of Changes
* Make SSicon_update disable itself when not doing anything
* Fix respawn verb runtime when used early in server-init
* Add more information to MC's stat_entry()
* Replace direct refernces to gcDestroyed with QDEL* macros
* plant_controller -> SSplants
* More plant tweaks
* Add more humor to changelog
* Move parallax globals into SSparallax
* Lighting responsiveness tweaks
* Fix parallax init order & better MC init panel stat
* Make mobs GC
* More overlays + Remove intercom spawn()
* SSfast_process; make pinpointers not use spawn-recursion to process
Also made the SM Cascade beach process with SSprocessing instead of a spawn loop.
* Update changelog
* Mob GC tweaks
* Del() cleanup
* Fix insomniac ZAS connection edges
* Minor pAI cleanup
* Convert more things to SSoverlay; fix duplicated overlay in field gens
* SM Bluespace turf tweaks
* Update SSgarbage debug globals list
* Human-type qdel tweaks
* Subsystem suspension; stat_entry improvements
* SQL Statistics cleanup
* Fix runtimes with ambrosia
* More disable() -> suspend(); fix nightmode again
* Human qdel fix; minor tweaks
* Update turbolift to work with StonedMC
* Make lifts use timers instead of a subsystem
* Make SSassets start earlier
* Convert the radio controller into a subsystem
* Fix some missing CHECK_TICKs in asteroid generation
* MC stat tweaks; make shouldnt_see a typecache
* Kill some redundant debug-controller entries
* radio_controller -> SSradio
* Better SSgarbage hard-del logging from /tg/ upstream
* Logging tweaks + GELF
* Misc client caching improvements
* Slime SSoverlay
* Oven icon fixes
* Implant fixes
- Death implants will no longer spam Common on death of user.
- Death implants should handle a deleted user better.
* Holder tweaks + Welding tool Initialize()
* Fix some bad subsystem logging
* Fix suit cooling units spawning without cells
* Starlight tweaks
* Gibber infinite gib fix
* More SSoverlay stuff
* Make crates use CUT_OVERLAY_IN
* Make SSarrivals suspend instead of disable
* Make openturf use split/phased tick checks
* Speculative fix for unwet timer runtimes
* Blood overlay tweaks/fixes
* Update crusher to play nice with SMC + SSoverlay
* Openturf improvements and fixes
* Minor turbolift tweaks
* Lighting performance improvements + ChangeTurf tweaks
* this is probably important
* Fix wall weld noises on changeturf
* More ChangeTurf tweaks
* Explosion tweaks
* Pre-game lobby tweaks
* Openturf tweaks
* Prevent admins from starting the game before init finishes
* Fix Travis
* Kill an unused var
* Fix ChangeTurf runtimes on openturfs
* Fixes
* Browser datum fixes, asset caching
* Update changelog
* Changelog
* Lobby tweaks
* Ticker tweaks; kill ticker var
* Further lobby tweaks
* Cascade tweaks
* air_master -> SSair
* Reduce overhead from radio autosay
* alarm_manager -> SSalarm
* bomb_processor -> SSexplosives
* corp_regs -> SSlaw
* ZAS overlay fixes
* Small wall icon optimization
* Fix effects master
* Assembly tweaks
* Megavend fixes
* Shuttle fixes
* Camera alert performance improvements
* Fix some world.log spam from lighting overlays
* Fix some Initialize() procs
* Openspace responsiveness tweaks
* Make HE pipes animate through openturfs
* Kill a spawn
-added new sprites for rubber and rifles casings
-made bullets path less dumb
-added some new gun sprites, like the large crossbow and zipguns
-added a new tatical sprite mask, with support for unathi, tajaran and vox
-added back sprites for some items like bats and scythes
-fixed being able to saw off sawn-off shotguns forever and ever
-fixed a typo on the custom loadout
-nerfed the brain damage of the mind flayer, since brain damage is lethal now
Fixes#531Fixes#276
`/mob/living/proc/revive` now also sets `mob/var/suiciding` to false. This is to stop rejuvinated/ling revived mobs from dying again after being brought back.
Fixes#92Fixes#479Fixes#157Fixes#533Fixes#486Fixes#528
Corrects a number of places where New() did not call ..(), and implements similar changes to attempt to ensure New()/initialize() complete running before qdel() runs.
Cuts down on the number of created items during server start.