[MODULAR] Resleeving part one: RSD brain interface (#23525)

* interface item

* the surprise tool

* research

* lore

* Update rsd_interface.dm

* Update modular_skyrat/modules/modular_implants/code/soulcatcher/handheld_soulcatcher.dm

Co-authored-by: Bloop <13398309+vinylspiders@users.noreply.github.com>

* Apply suggestions from code review

Co-authored-by: Bloop <13398309+vinylspiders@users.noreply.github.com>

* Apply suggestions from code review

Co-authored-by: Bloop <13398309+vinylspiders@users.noreply.github.com>

---------

Co-authored-by: Bloop <13398309+vinylspiders@users.noreply.github.com>

code/__DEFINES/~skyrat_defines/traits.dm

@@ -90,3 +90,6 @@
 
 /// Trait given to a piece of eyewear that allows the user to use NIFSoft HUDs
 #define TRAIT_NIFSOFT_HUD_GRANTER "nifsoft_hud_granter"
+
+/// Trait given to a brain that is able to accept souls from a RSD
+#define TRAIT_RSD_COMPATIBLE "rsd_compatible"

modular_skyrat/master_files/code/modules/research/techweb/all_nodes.dm

@@ -212,6 +212,7 @@
 	. = ..()
 	design_ids += list(
 		"soulcatcher_device",
+		"rsd_interface",
 	)
 
 /datum/techweb_node/cyborg_upg_util/New()

modular_skyrat/modules/modular_implants/code/soulcatcher/handheld_soulcatcher.dm

@@ -111,4 +111,52 @@
 
 	return TRUE
 
+/obj/item/handheld_soulcatcher/attack_secondary(mob/living/carbon/human/target_mob, mob/living/user, params)
+	if(!istype(target_mob))
+		return SECONDARY_ATTACK_CANCEL_ATTACK_CHAIN
+
+	var/obj/item/organ/internal/brain/target_brain = target_mob.get_organ_slot(ORGAN_SLOT_BRAIN)
+	if(!istype(target_brain))
+		to_chat(user, span_warning("[target_mob] lacks a brain!"))
+		return SECONDARY_ATTACK_CANCEL_ATTACK_CHAIN
+
+	if(!HAS_TRAIT(target_brain, TRAIT_RSD_COMPATIBLE))
+		to_chat(user, span_warning("[target_mob]'s brain isn't compatible."))
+		return SECONDARY_ATTACK_CANCEL_ATTACK_CHAIN
+
+	if(target_mob.mind || target_mob.ckey || GetComponent(/datum/component/previous_body))
+		to_chat(user, span_warning("[target_mob] is not able to receive a soul"))
+		return SECONDARY_ATTACK_CANCEL_ATTACK_CHAIN
+
+	var/list/soul_list = list()
+	for(var/datum/soulcatcher_room/room as anything in linked_soulcatcher.soulcatcher_rooms)
+		for(var/mob/living/soulcatcher_soul/soul as anything in room.current_souls)
+			if(!soul.round_participant || soul.body_scan_needed)
+				continue
+
+			soul_list += soul
+
+	if(!length(soul_list))
+		to_chat(user, span_warning("There are no souls that can be transferred to [target_mob]."))
+		return SECONDARY_ATTACK_CANCEL_ATTACK_CHAIN
+
+	var/mob/living/soulcatcher_soul/chosen_soul = tgui_input_list(user, "Choose a soul to transfer into the body", name, soul_list)
+	if(!chosen_soul)
+		return SECONDARY_ATTACK_CANCEL_ATTACK_CHAIN
+
+	if(chosen_soul.previous_body)
+		var/mob/living/old_body = chosen_soul.previous_body.resolve()
+		if(!old_body)
+			return SECONDARY_ATTACK_CANCEL_ATTACK_CHAIN
+
+		SEND_SIGNAL(old_body, COMSIG_SOULCATCHER_CHECK_SOUL, FALSE)
+
+	chosen_soul.mind.transfer_to(target_mob, TRUE)
+	playsound(src, 'modular_skyrat/modules/modular_implants/sounds/default_good.ogg', 50, FALSE, ignore_walls = FALSE)
+	visible_message(span_notice("[src] beeps: Body transfer complete."))
+	log_admin("[src] was used by [user] to transfer [chosen_soul]'s soulcatcher soul to [target_mob].")
+
+	qdel(chosen_soul)
+	return SECONDARY_ATTACK_CANCEL_ATTACK_CHAIN
+
 #undef RSD_ATTEMPT_COOLDOWN

modular_skyrat/modules/resleeving/code/research/resleeving_research.dm

@@ -0,0 +1,14 @@
+/datum/design/rsd_interface
+	name = "RSD Phylactery"
+	desc = "A brain interface that allows for transfer of Resonance from a handheld RSD, such as the Evoker model."
+	id = "rsd_interface"
+	build_type = PROTOLATHE | AWAY_LATHE
+	departmental_flags = DEPARTMENT_BITFLAG_MEDICAL | DEPARTMENT_BITFLAG_SCIENCE
+	category = list(RND_CATEGORY_EQUIPMENT)
+	materials = list(
+		/datum/material/iron = SHEET_MATERIAL_AMOUNT * 0.5,
+		/datum/material/gold = SHEET_MATERIAL_AMOUNT,
+		/datum/material/silver = SHEET_MATERIAL_AMOUNT,
+	)
+	build_path = /obj/item/rsd_interface
+

modular_skyrat/modules/resleeving/code/rsd_interface.dm

@@ -0,0 +1,44 @@
+/obj/item/rsd_interface
+	name = "RSD Phylactery"
+	desc = "A small device inserted, typically, into inert brains. As Resonance cannot persist in what's referred to as a 'vacuum', RSDs--much like the brains and CPUs they emulate--employ cerebral white noise as a foundation for Resonance to persist in otherwise dead-quiet containers.."
+	icon = 'modular_skyrat/modules/aesthetics/implanter/implanter.dmi'
+	icon_state = "implanter1"
+	inhand_icon_state = "syringe_0"
+	lefthand_file = 'icons/mob/inhands/equipment/medical_lefthand.dmi'
+	righthand_file = 'icons/mob/inhands/equipment/medical_righthand.dmi'
+
+/// Attempts to use the item on the target brain.
+/obj/item/rsd_interface/afterattack(obj/item/organ/internal/brain/target_brain, mob/user, proximity_flag, click_parameters)
+	. = ..()
+	if(!proximity_flag || !istype(target_brain))
+		return FALSE
+
+	if(HAS_TRAIT(target_brain, TRAIT_NIFSOFT_HUD_GRANTER))
+		balloon_alert("already upgraded!")
+		return FALSE
+
+	user.visible_message(span_notice("[user] upgrades [target_brain] with [src]."), span_notice("You upgrade [target_brain] to be RSD compatible."))
+	target_brain.AddElement(/datum/element/rsd_interface)
+	playsound(target_brain.loc, 'sound/weapons/circsawhit.ogg', 50, vary = TRUE)
+
+	qdel(src)
+
+/datum/element/rsd_interface/Attach(datum/target)
+	. = ..()
+	if(!istype(target, /obj/item/organ/internal/brain))
+		return ELEMENT_INCOMPATIBLE
+
+	RegisterSignal(target, COMSIG_ATOM_EXAMINE, PROC_REF(on_examine))
+	ADD_TRAIT(target, TRAIT_RSD_COMPATIBLE, INNATE_TRAIT)
+
+/// Adds text to the examine text of the parent item, explaining that the item can be used to enable the use of NIFSoft HUDs
+/datum/element/rsd_interface/proc/on_examine(datum/source, mob/user, list/examine_text)
+	SIGNAL_HANDLER
+	examine_text += span_cyan("Souls can be transferred to [source], assuming it is inert.")
+
+/datum/element/rsd_interface/Detach(datum/target)
+	UnregisterSignal(target, COMSIG_ATOM_EXAMINE)
+	REMOVE_TRAIT(target, TRAIT_RSD_COMPATIBLE, INNATE_TRAIT)
+
+	return ..()
+

tgstation.dme

@@ -7503,6 +7503,8 @@
 #include "modular_skyrat\modules\records_on_examine\code\record_variables.dm"
 #include "modular_skyrat\modules\records_on_examine\code\records_procs.dm"
 #include "modular_skyrat\modules\records_on_examine\code\view_exploitables.dm"
+#include "modular_skyrat\modules\resleeving\code\rsd_interface.dm"
+#include "modular_skyrat\modules\resleeving\code\research\resleeving_research.dm"
 #include "modular_skyrat\modules\robohand\code\bodypart_autosurgeon.dm"
 #include "modular_skyrat\modules\robohand\code\robohand.dm"
 #include "modular_skyrat\modules\robohand\code\silverhand_bundle.dm"