## About The Pull Request
Moves all blood handling into procs and adds ways to easily hook into
basically every basic blood behavior.
This PR is not meant to fix every single case of janky blood logic in
the game. The main point and motivation of this PR is to add hooks for
blood behaviors. This allows for way more flexibility with blood code.
I am not going to fix our 3000 instances of single-letter vars, wacky
blood transfers, etc. This is just the groundwork for future PRs to
build off of, and by itself, should do very little to change blood
behavior.
I also added a rigorous set of unit tests for verifying that all of the
basic blood volume procs work correctly.
## Why It's Good For The Game
Previously, blood was handled via directly reading/writing
[var/blood_volume]. This was INCREDIBLY inconsistent and there was no
way to hook into it. This PR makes blood handling way more consistent,
which is great for all sorts of features.
## About The Pull Request
This PR gives vat beast, mega arachnid and butterbear 0.8 seconds attack
cd, instead of the default basic mob 2 second attack CD.
## Why It's Good For The Game
All mobs used to have a human like 0.8 second attack delay when
sentient, this was changed for basic mobs a while ago to normalize the
attack rate between AI controlled and sentient mobs.
This mostly makes sense, but the faster attack rate also helped make up
for the fact that human controlled mobs don't have aimbot unlike AI
mobs.
And some of the basic mobs slowed down were designed to be player
controlled and balanced around the 0.8 second click cd.
This brings them back where they were intended to be when played
As a side effect it makes the AI controlled vatbeasts and mega arachnids
more deadly.
I think that isn't a bad thing as one of the design goals for cytology
to set it apart from gold slimes was that breeding giant space monsters
should be dangerous.
## Changelog
🆑
balance: vatbeasts, mega arachnids and butterbears now attack much
quicker, in line with their old player controlled attack speed.
/🆑
## About The Pull Request
Refactors most of blood handling code untouched by #90593 and completely
rewrites all blood decals, components and reagents.
- Blood types now have behavioral flags which allow them to control
where they leave decals/DNA/viruses. Oil no longer transfers DNA and
viruses with it, while podpeople water-blood doesn't leave visible
decals on turfs and items, but still can be picked up by DNA scanners.
- Multiple blood types have received unique handling - liquid
electricity blood now glows in the dark, oil trails are flammable and
lube ones are slippery. Oil blood can be restored with fuel, lube with
silicon and slime with stable plasma (as normal plasma already passively
regenerates their blood), instead of everything using iron. Saline
solution only supplements on iron-based blood and won't do anything to
help with bloodloss for species who rely on different blood types.
(Roundstart this applies only to Ethereals)
- All blood logic has been moved away from the blood reagent itself into
a blood element that is assigned to the blood reagent by default, and to
any reagent that's drawn from a mob as their "blood" (in
``transfer_blood_to``). This means that blood you draw from lizards will
be green and have lizard's blood description instead of mentioning red
blood cells, Ethereal "blood" will actually contain their DNA and genes,
etc.
- Refactored all blood decals. Blood states are no more, everything is
now handled via blood DNA. Credits to MrMelbert and Maplestation, as a
significant amount of code has been taken from
https://github.com/MrMelbert/MapleStationCode/pull/436 and many of his
followup PRs. Oil and xenomorph splatters are now subtypes of blood,
blood drying is now animated, blood trails now curve and can be
diagonal.
- Rewrote bloodysoles and bloody_spreader components, credits to Melbert
again for the former, while latter now makes more sense with its
interactions. Bloody soles no longer share blood DNA with your hands.
- Ported Melbert's bloody footprint sprites and bot-blood-spreading
functionality.
- Removed all species-side reagent interactions, instead they're handled
by said species' livers. (This previously included exotic blood
handling, thus the removal)
- Slightly optimized human rendering by removing inbetween overlay
holders for clothing when they're not needed.
- Blood-transmitted diseases will now get added to many more decals than
before.
- Cleaned up and partially refactored replica pods, fixed an issue where
monkeys/manipulators were unable to harvest mindless pods.
- Exotic bloodtype on species now automatically assigns their blood
reagent, without the need to assign them separately.
- Clown mobs now bleed (with colorful reagent instead of blood during
april fools), and so do vatbeasts (lizard blood)
- Implemented generic procs for handling bleeding checks, all sorts of
scanners now also correctly call your blood for what it is.
- Podpeople's guts are now lime-green like their organs, instead of
being weirdly greyish like their water-blood. (Their bleeding overlays
are still grey, as they're bleeding water)
- Slimepeople now can bleed. Their jelly is pale purple in color, but
their wound overlays copy their body color.
- Injecting/spraying/splashing/etc mob with a reagent preserves its
data, so you could theoretically recycle fine wines from someone's
bloodstream
- Fixed burdened chaplain's sect never actually giving a blessing when
applying effects, and giving a blessing when nothing can be healed.
Inverted check strikes again.
- Closes#91039
#### Examples
A lot of blood here has dried, visually the blood colors are almost
exactly the same as before either of the blood refactors.


## About The Pull Request
This PR enables most mobs to take stamina damage, become slowed as a
result of taking stamina damage.
It also gives most mobs CANSTUN which not only allows them to enter
stamcrit from taking stamina damage but also makes them vulnerable to
mechanics like stun batons.
Mobs which already took stamina damage (Spiders and Space Dragons) still
work the same way.
Mechanical or artificial mobs, mining mobs, simple xenomorphs, ghosts,
and most kinds of mob closely associated with antagonists still don't
take stamina damage.
## Why It's Good For The Game
A new player armed with a disabler will probably try and use it on
aggressive animals and be disappointed, but I don't think there is any
_reason_ for them to be disappointed when it's already something they
are doing merely to delay being attacked rather than to kill the target.
It's not intuitive for these mechanics not to function against simple
mobs when they do against humans, _especially_ the kinds of mobs which
look like humans, and there isn't any technical reason why it _couldn't_
work against most mobs which it looks like they should work against.
While this reduces the threat level of some mobs against Security
players I think the greater interaction with the sandbox is beneficial.
I'm hopeful it doesn't have that much effect on many of the most common
places you encounter dangerous mobs like Space Ruins or Gateways as they
are also places where you can't reliably recharge your energy-based
stamina weapons as most that don't require energy do require getting
into melee and endangering yourself.
## Changelog
🆑
balance: Most biological mobs are now slowed by taking stamina damage,
and can be stunned. Mechanical mobs, mining mobs, and several other
special kinds (chiefly those invoked by antagonists) are unaffected. If
this seems to effect any mob it probably shouldn't, please report it as
a bug.
/🆑
## About The Pull Request
Another pretty easy conversion; this mob doesn't really do anything
except melee people and become rideable after you feed it cheese fries.
Changes in behaviour are that it will now seek out cheese fries by
itself if they happen to be lying around, and if it stays mad at you for
10 seconds it will use its powerful tentacle slap ability to hurl you
across the room, probably breaking a bone. Really just don't approach
this thing if you don't have cheese fries.
This mob basically only exists from cytology so I would be surprised if
it has existed in more than one round in the past four months.
## Why It's Good For The Game
I'm working down the remaining simple animals and a lot of them turn out
to still be quick fixes.
## Changelog
🆑
refactor: The Cytology Vatbeast now uses the basic mob framework, please
report any unusual behaviour.
/🆑