NOTICE
I don't play fo4 anymore. I haven't since around fo76's release. Why? Because I hate how AWKCR has changed to be more than what it says on the tin. I want no part of their color swaps crap and couldn't figure out how to get rid of them (even going back to the older versions didn't work). So I quit playing fo4 all together because I put too much time and effort into having my game work the way I wanted, and it was no longer possible for me to have my game the way I wanted it. All of my mods are presented as-is, and I don't care what anyone has to say about them.

Background
After playing around in the new hardcore survival mode for a while, I was inspired to make a way to give some of my characters another type of thirst: for blood. Specifically I wanted to make them into what I call vasaki. It's a species I made up years ago in my creative writing, and is heavily based on vampires.

What this mod does
Once installed, you will find a vasaki blood pack near the post-war V111 entrance (in the blue building). Any character on any difficulty that drinks this blood will gain the perk "Vasaki" that makes all the magic happen:

• A thirst for blood is added, similar to survival thirst/hunger. Going without blood causes debuff's (stuff like "Thirsty for Blood"). It takes many many blood packs to get back to normal, and then even more blood gives a buff ("Rosy Red Cheeks"). These are in the pip-boy status screen, have icons below your hp bar, and messages that appear in top left of the screen. 
• "Blood..." is an interaction with some dead bodies. This opens a menu (see screenshots) to let you choose what to do. Fresh (from humans) is the best way to satisfy blood thirst, especially when you need blood (it has a Blood Value of 5 or more). Bottling require a glass bottle in your inventory. Eat corpse requires the cannibal perk.
• A small amount of life-giver style healing / hp regen (though a lot less than life giver to that the perk is still useful if you take it).
• Agi +1, Str +2, HP +50
• Falling damage is reduced and jump height is increased.
• Addiction duration is a little less
• Addiction chance is a lot less
• All effects (good and bad) are half from the following types of items: alcohol, chem, drink, food, nuka cola, stimpak, and water. A lot of the times the game's vanilla UI will say 0, but it means 0.5. If you want to see 0.5, I recommend DEF_UI.
  

There's a few new craftable items (some of them are hidden from human characters), including a settings holotape (in the chem station). There's settings for things like:

• True Vampire - take sun damage, be sneakier at night, move faster at night, and when you have enough blood get even more strength, dmg resistance, and heal rads. This was purely done by request, so more ideas on expanding it are welcome. 
• Blood Is Food - under True Vampire, makes anything that helps blood thirst also help survival hunger and thirst (instead of just some of it).
• Toggle Companion Ignore (as of this writing, under the debug menu) - turn off/on companions reacting to drinking blood. PC will see a message, console won't (sorry I was lazy in coding the message). 
• Adjust jump height and fall damage (even human characters can do this - not just vasaki characters)
• Blood tick settings - adjust how often you need blood
• Hard Mode - Make things a little harder on yourself by only taking blood when you're [ HIDDEN ], risking jet addiction when you drink raider blood (and upping your chances of getting an addiction from psycho and med-x chems), drinking too much super mutant blood giving negative effects, and blood from ghouls being more harmful and less useful (risks diseases, hurts your legs, gives you rads, and inflicts poison damage). These are new so they could still be buggy and I may continue to expand on them / this section. 
• To make Hard Mode even more fun, I use the following mods: Greedy Doctors (to help discourage using them at all) ~ Crippled limbs fix (disables auto-heal) ~ Stimpaks restore less limb damage ~ Crafting Workbenches (to craft all your bottles into 1 type of bottle, making putting them all down and picking them all back up easier)
• Under debug, you can toggle getting enough blood (one of the rosy red levels) healing you so well that it cancels out all current chem effects.
• Debug can also give you a vasaki blood pack (useful for alt-start mods or things like FROST), cuz sometimes I'm too lazy to fuss with the console command spawn thing and because this mod is on xbox too. 
  

If there's something else you'd like to see be a setting, please let me know. Most of the settings are settings due to a request (shot out to the players of this mod on xbox, the comments disappeared from beth's website, but they were super helpful for getting this mod to be so customizable to personal preference and just general inspiration).
 
How to install

• First back up your saves. I don't want you to lose any characters, human or vasaki, and this is NOT the type of mod you can just uninstall from a save. It's a long story, just trust me. 
• Use NMM to download and install the main file for this mod, Jacq-Vasaki. If you don't use NMM do what you normally do.
• Check the Optional Files and download any you want. If you have any DLC, there's optional files for Far Harbor and Nuka-World. An optional file with a lower version number than the main file should be fine. Do NOT use a higher version of an optional file than your version of the main file. For example, v11.4 of Nuka requires v11.4 or greater of Jacq-Vasaki. 
• Put optional files after the main file in your load order. Load order of optional files themselves down't matter as long as they are all after the main one.
• Launch Fallout. Enjoy.
  

If that doesn't work and you don't even see the vasaki blood pack in the screenshots: Make sure your Fallout 4/Data folder has Jacq-Vasaki.esp and your Fallout 4/Data/Scripts/Vasaki or Fallout 4/Data/Scripts folder has about 8+ files that start with "Vasaki". Of course make sure mods are enabled in general in your game via that thing in the pref or custom ini file. If you have issues, let me know and I'll see if I can figure something out.

Issues I know how to Fix:
If you don't see the vasaki blood, you're having issues with the esp file (check your load order?). If you pick it up and your jump height doesn't change, the scripts are missing. If you then have the issue were every time you get a thirst update, you go all the way down to kill for blood, go back to a save from before you had this mod. If the game starts freezing all the time, you've had too many updates and changes in the same save, (you probably guessed it) go back to a save from before you had this mod or make a new one.

Optional Files
Jacq-Vasaki-Coast
Took me long enough to remember that black bloodleaf from Far Harbor was a thing, didn't it? Anyway, gives the raw black bloodleaf a blood value, and adds the cooked and blood fruit recipes for it (like normal red bloodleaf you find out in the commonwealth). Only works if you have Far Harbor. I made it as a separate file because the main vasaki file still doesn't require any DLC and I plan to keep it that way. Just put jacq-vasaki-coast.esp after jacq-vasaki.esp in your load order and enjoy.

Jacq-Vasaki-Crunch
This un-overrides the crunch sound for the player eats a corpse or drinks blood. Put jacq-vasaki-crunch.esp after jacq-vasaki.esp in your load order and enjoy all the crunchy-ness you want. If you don't use this file, both will make a sorta quiet drinking noises. It has to be either both or neither crunch because both use the function .startCannibal() which (best I can tell) is hard-coded into the game to use the sound descriptor NPCHumanCannibalEat. If anyone else wants to look deeper into this, they are more than welcome to. Personally, I never take the cannibal perk so I don't care what noises it makes and I don't like crunchy drink blood. But you do you.  

Jacq-Vasaki-Nuka
This makes the new item Nuka-Blood look cooler and craft-able at the nuka-world drink crafting station. I made it an optional file so the whole mod doesn't require Nuka-World. To use this file, put jacq-vasaki-nuka.esp after jacq-vasaki.esp in your load order. If you don't use this file, Nuka-Blood looks like Nuka-Cherry. If you do use this file, it looks like Nuka-Punch and can be crafted at the nuka-world drink station. Regardless of rather you use this file, nuka-blood will be in your game and craft-able under chem and cooking stations. 

I tried and tried and tried to change quantum to be red instead of cyan, but bits of the cyan/blue/green remained. I finally (many months after nuka world came out) realized one the of the nuka-world bottles glows red, so I decided to simply use it. After that learned why the cyan wouldn't go away, but I didn't feel like bothering to go through the trouble of fixing it, and besides I like the nuka-punch bottle. 

Source Code
Strictly speaking, this isn't exactly part of the mod. Figuring out how to code everything I did to make this mod work was HARD. I had to track down a lot of obscure pieces and find way to put them together, then headdesk over and over while the compiler complained that it didn't work (then headdesk again for the logic bugs). It took so much time. And I'm forgetful AF, so I added a lot of comments to my code for later when (not if, when) I forgot what I did. So in case any other modders want to know how I did the things I did, I sometimes upload the source code to this mod. So I guess call this file a resource for other modders? If you don't know what source code or papyrus is then you don't need this file. The game can't even use this file (it needs compiled code, this isn't compiled; the compiled code is in the main file Jacq-Vasaki).

Jacq-Vasaki-BloodIsNotFood
This has now been turned into a setting, 11.9 is the final version of this file, and all the items in are copies from the main file. This has been included in 11.9 only for existing saves. New saves should be made without this file in the load order.

Other mods
There's a few mods from other authors that I personally think go great with this mod. These mods include: Loot Detector ~ Vault 81 Molerat Disease Immunity ~ Black Widow Armor (for the soul detecting hood) ~ Survivalist Go-Bags (for more carry capacity) ~ Looks Menu Customization Compendium (awesome face markings) ~ Start Me Up ~ Misc armor mods to be more damage resistant

Updating
When updating to a new version, I generally speaking recommend going back to a save from before you had this mod / making a new character. Otherwise, your save might get a bit.... weird. So please back up your saves before applying any updates in case that happens.

Conflicts & Overrides - Load Order
Most of the stuff in this mod I made by making unique copies of stuff that was already in the game, so that they don't override the exiting stuff in the game and can't conflict with other mods and load order doesn't matter and life is happy. All new and overridden items will use VIS style naming because I always play with that wonderful mod. As far as load order, I have this near the bottom in my game.

A predictable conflict is the blood pack and glowing blood pack. I added some stuff to them. Including taking rad damage from the glowing ones. If you use another mod that changes the normal blood packs in anyway and it comes after this mod, you won't get blood like for your thirst from those blood packs (though my custom items, like the "5 blood packs", will still work).

Effective version 6.4, put this after any other mods that change the cannibal perk (otherwise you won't be able to drink blood). 

Since this changes what Buddy can chill, this mod will conflict with other mods that mess with the vanilla game quest that tells Buddy what to chill (but doesn't conflict with the DLCs changing what he can chill cuz how Beth coded it). Cold variant of Nuka-Blood won't be made by friges in mods (like RRTV's player homes) without a patch. I can tell how to make them if you want to know.

Since Jacq-Vasaki-Coast changes the black bloodleaf, it needs to be after any other mods that change the black bloodleaf (otherwise it won't have a blood value but the recipes will work regardless).

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Other Mods in Screenshots
Valdacil's Item Sorting ~ DEF_UI ~ Proto Vault Suit (Shadow Hexa) ~ Ponytail Hairstyles by Azar ~ 512 Standalone Hair Colors (1 ESP) ~ The Mercenary - Pack (The Rebel) ~ Eli's Armour Compendium (Road Fury Outfit) ~ Black and White Pipboy (I think version 1.1, I'm not a fan of the chrome versions) ~ Concealed Armors

Made in Creation Kit. Cleaned up from time to time in FO4Edit (though like 99% of the time I'm working on this mod, it's in CK).
Available on xbox - https://mods.bethesda.net/#en/workshop/fallout4/mod-detail/1663449
And ps4 - https://mods.bethesda.net/#en/workshop/fallout4/mod-detail/1967490 - As far as I know sony decided not to allow external stuff like scripts, making this mod impossible on ps4 :(
If the version here is ever higher than the version on Xbox or PS4, I grant anyone and everyone permission to upload the current version here to Beth's website AS LONG AS you give me credit as the mod author on Beth. If this mod is ever removed from Beth's website, I grant anyone and everyone permission to re-upload it AS LONG AS you give me credit as the mod author on Beth's website. Please don't claim this mod is yours. Though if you take this mod and change it, of course credit yourself for the changes. And if you want to add any of those type of links in the posts section of this mod, go for it.

Paid Mods Opinion
For the foreseeable future, this will never be a paid mod via creation club or any other means. Only if I like went super crazy and added like tons of stuff and made it feel like a full DLC (like the scale of Far Harbor or Nuka World) could I justify that to myself. And I don't see that happening. I consider this mod basically finished. I might tweak a few things here and there, I might add an item or two, but I consider it (mostly) done and just play using it from time to time. And even if that was to ever change (hey, I've gone crazy before), this mod as it is now will always be free.

I made this because I loved the idea of having it that much. I made it for me, and shared it because I like being nice.

I explicitly do NOT grant permission for anyone to ever put any part of this mod on the Creation Club or any other paid mods platform/site/etc. This mod is available for FREE.

I didn't make this mod so anyone else could turn a profit from it. Thank you.