Allows cursekin to load a preference slot instead of simply changing species. (#5568)

## About The Pull Request

Title.

Adds a new preference option that allows you to designate a character
slot as your lycan transformation. Does not transfer quirks and does not
change the name.

Additionally, allows peopel to use the lycan species as a prefs-only
species for customization.

### Note

This will likely transfer languages and a few other things, but nothing
gamechanging. If the SAD does it (excluding quirks), this probably also
does it.
## Why It's Good For The Game

Adds for customization of the lycan form. Hair, Augments (NOT IMPLANTS).
Even taur mode.
## Proof Of Testing
<details>
<summary>Screenshots/Videos</summary>

<img width="923" height="643" alt="image"
src="https://github.com/user-attachments/assets/92586859-0bc3-49f5-be8a-f39ac798b730"
/>

</details>

## Changelog
🆑
add: Cursekin can select a character slot to transform into rather than
just siwtching species.
/🆑

modular_zubbers/code/modules/customization/species/lycans/_lycan_species.dm

@@ -50,10 +50,12 @@
 	)
 
 	no_equip_flags = ITEM_SLOT_ICLOTHING | ITEM_SLOT_OCLOTHING | ITEM_SLOT_GLOVES | ITEM_SLOT_FEET | ITEM_SLOT_SUITSTORE | ITEM_SLOT_BACK | ITEM_SLOT_BELT | ITEM_SLOT_EARS | ITEM_SLOT_HEAD | ITEM_SLOT_MASK | ITEM_SLOT_EYES | ITEM_SLOT_BACK | ITEM_SLOT_NECK
+	always_customizable = TRUE
+	sort_bottom = TRUE
 
 /datum/species/lycan/prepare_human_for_preview(mob/living/carbon/human/lycan)
 	var/main_color = "#362d23"
-	var/secondary_color = "#9c5852"
+	var/secondary_color = "#bb1607"
 	var/tertiary_color = "#CCF6E2"
 	lycan.dna.features["mcolor"] = main_color
 	lycan.dna.features["mcolor2"] = secondary_color
@@ -68,15 +70,24 @@
 	race = /datum/species/lycan
 
 /datum/species/lycan/get_species_description()
-	return list(placeholder_description)
+	return list("The transformed version of a Cursekin. Only available for customization of a Cursekin's transformed form.")
 
 /datum/species/lycan/get_species_lore()
-	return list(placeholder_lore)
+	return list("See Cursekin lore.")
 
 /datum/species/lycan/on_species_gain(mob/living/carbon/human/gainer, datum/species/old_species, pref_load, regenerate_icons = TRUE)
 	. = ..()
 	gainer.AddElement(/datum/element/inorganic_rejection)
+	gainer.dna.features["body_size"] = 2
+	gainer.maptext_height = 32 * gainer.dna.features["body_size"] //Adjust runechat height
+	gainer.mob_size = MOB_SIZE_LARGE
+	gainer.dna.update_body_size()
 
 /datum/species/lycan/on_species_loss(mob/living/carbon/human/loser, datum/species/new_species, pref_load)
 	. = ..()
 	loser.RemoveElement(/datum/element/inorganic_rejection)
+	if(!loser.has_quirk(/datum/quirk/oversized))
+		loser.dna.features["body_size"] = loser?.client?.prefs?.read_preference(/datum/preference/numeric/body_size) || 1
+		loser.maptext_height = 32 * loser.dna.features["body_size"]
+		loser.mob_size = MOB_SIZE_HUMAN
+		loser.dna.update_body_size()

modular_zubbers/code/modules/customization/species/lycans/cursekin_prefs.dm

@@ -0,0 +1,20 @@
+/datum/preference/numeric/cursekin_char_slot
+	category = PREFERENCE_CATEGORY_CHARACTER_BASICS
+	savefile_identifier = PREFERENCE_CHARACTER
+	savefile_key = "cursekin_char_slot"
+	can_randomize = FALSE
+	minimum = 0
+	maximum = /datum/preferences::max_save_slots
+
+/datum/preference/numeric/cursekin_char_slot/has_relevant_feature(datum/preferences/preferences)
+	. = ..()
+	if (!.)
+		return FALSE
+
+	return ispath(preferences.read_preference(/datum/preference/choiced/species), /datum/species/human/cursekin)
+
+/datum/preference/numeric/cursekin_char_slot/apply_to_human(mob/living/carbon/human/target, value, datum/preferences/preferences)
+	return
+
+/datum/preference/numeric/cursekin_char_slot/create_default_value()
+	return 0

modular_zubbers/code/modules/customization/species/lycans/organs/lycan_brain.dm

@@ -3,6 +3,23 @@
 	desc = "A larger than average, albeit slightly smoother brain. The hypothalamus seems larger than normal." // I read in a random medical artical that the hypothalamus controls aggression.
 	actions_types = list(/datum/action/cooldown/spell/beast_form)
 	var/list/removed_quirks = list()
+	var/last_slot
+
+/obj/item/organ/brain/lycan/on_mob_insert(mob/living/carbon/brain_owner, special, movement_flags)
+	. = ..()
+
+	addtimer(CALLBACK(src, PROC_REF(try_getting_slot)), 0.1 SECONDS)
+
+// no remove. we want it to REMEMBER.
+
+/// A delayed getter for the current slot of the mob. Used because theres no easy way to access the client when a mob is spawend...
+/obj/item/organ/brain/lycan/proc/try_getting_slot()
+	if (last_slot)
+		return
+
+	var/client/target_client = owner?.client
+	if (!isnull(target_client))
+		last_slot = target_client.prefs.savefile.get_entry("default_slot")
 
 /obj/item/organ/brain/lycan/proc/enter_beast_form()
 	var/datum/species/human/cursekin/current_wolf = owner.dna.species
@@ -15,12 +32,30 @@
 			removed_quirks += bad_quirk.type
 			owner.remove_quirk(bad_quirk.type)
 	owner.visible_message(span_warning("[owner] grows massive, their body quickly getting covered in fur!"))
-	owner.set_species(current_wolf.lycanthropy_species, TRUE, TRUE, FALSE)
+	var/client/target_client = owner.client
+	if (!isnull(target_client))
+		var/name = owner.real_name
+		var/slot = target_client.prefs.read_preference(/datum/preference/numeric/cursekin_char_slot)
+		var/transfer = TRUE
+		if (isnull(last_slot))
+			last_slot = target_client.prefs.savefile.get_entry("default_slot")
+		target_client.prefs.load_character(slot)
+		if (!ispath(target_client.prefs.read_preference(/datum.preference/choiced/species), current_wolf.lycanthropy_species))
+			to_chat(owner, span_warning("Your selected slot is not a lycan! Defaulting to simply changing your species..."))
+			target_client.prefs.load_character(last_slot)
+			owner.set_species(current_wolf.lycanthropy_species, TRUE, TRUE, FALSE)
+			last_slot = null // allows for easier switching in later procs
+			transfer = FALSE
+
+		if (transfer)
+			target_client.prefs.safe_transfer_prefs_to_with_damage(owner)
+			owner.real_name = name
+			owner.name = name
+			owner.dna.update_dna_identity()
+
+			target_client.prefs.load_character(last_slot)
+
 	ADD_TRAIT(owner, TRAIT_BEAST_FORM, SPECIES_TRAIT)
-	owner.dna.features["body_size"] = 2
-	owner.maptext_height = 32 * owner.dna.features["body_size"] //Adjust runechat height
-	owner.dna.update_body_size()
-	owner.mob_size = MOB_SIZE_LARGE
 	playsound(owner, 'modular_zubbers/code/modules/customization/species/lycans/transform.ogg', 50)
 
 /obj/item/organ/brain/lycan/proc/leave_beast_form()
@@ -28,13 +63,16 @@
 	if(isnull(current_wolf) && !HAS_TRAIT_FROM(owner, TRAIT_BEAST_FORM, SPECIES_TRAIT))
 		return
 	owner.visible_message(span_warning("[owner] shrinks down, their fur receding!"))
-	owner.set_species(/datum/species/human/cursekin, TRUE, TRUE, FALSE)
+
+	if (last_slot)
+		var/client/target_client = owner.client
+		if (!isnull(target_client))
+			target_client.prefs.load_character(last_slot)
+			target_client.prefs.safe_transfer_prefs_to_with_damage(owner)
+			owner.dna.update_dna_identity()
+	else
+		owner.set_species(/datum/species/human/cursekin, TRUE, TRUE, FALSE)
 	REMOVE_TRAIT(owner, TRAIT_BEAST_FORM, SPECIES_TRAIT)
-	if(!owner.has_quirk(/datum/quirk/oversized))
-		owner.dna.features["body_size"] = owner?.client?.prefs ?owner?.client?.prefs?.read_preference(/datum/preference/numeric/body_size) : 1
-		owner.maptext_height = 32 * owner.dna.features["body_size"]
-		owner.dna.update_body_size()
-		owner.mob_size = MOB_SIZE_HUMAN
 	playsound(owner, 'modular_zubbers/code/modules/customization/species/lycans/transform.ogg', 50)
 	if(removed_quirks)
 		for(var/typepath in removed_quirks)

tgstation.dme

@@ -9502,6 +9502,7 @@
 #include "modular_zubbers\code\modules\customization\species\lycans\_cursekin_species.dm"
 #include "modular_zubbers\code\modules\customization\species\lycans\_lycan_species.dm"
 #include "modular_zubbers\code\modules\customization\species\lycans\cursekin_blacklisted_quirks.dm"
+#include "modular_zubbers\code\modules\customization\species\lycans\cursekin_prefs.dm"
 #include "modular_zubbers\code\modules\customization\species\lycans\lycan_verbs.dm"
 #include "modular_zubbers\code\modules\customization\species\lycans\bodyparts\lycan_bodyparts.dm"
 #include "modular_zubbers\code\modules\customization\species\lycans\organs\lycan_brain.dm"

tgui/packages/tgui/interfaces/PreferencesMenu/preferences/features/character_preferences/bubbers/cursekin.tsx

@@ -0,0 +1,12 @@
+import {
+  type Feature,
+  FeatureNumberInput,
+} from '../../base';
+
+export const cursekin_char_slot: Feature<number> = {
+  name: 'Lycan Character Slot',
+  description:
+    "The index of the character slot, from top to bottom, of the lycan character slot that will be used when you transform. \
+    Does not use quirks, implants, or the set name. Set to a non-lycan slot to simply switch species instead of loading a slot.",
+  component: FeatureNumberInput,
+};