[MIRROR] Electrovore virgo (#12225)

Co-authored-by: ShoanaeaCKeye <45808921+Shoanaea@users.noreply.github.com>
Co-authored-by: Kashargul <144968721+Kashargul@users.noreply.github.com>

code/__defines/traits/declarations.dm

@@ -49,3 +49,7 @@ Remember to update _globalvars/traits.dm if you're adding/removing/renaming trai
 #define TRAIT_MADNESS_IMMUNE "supermatter_madness_immune"
 /// Owner is corrupted via redspace. Used downstream. SHOULD NOT BE USED LIGHTLY. HORROR THEMES.
 #define TRAIT_REDSPACE_CORRUPTED "redspace_corrupted"
+// allows draining of power cells for nutrition
+#define TRAIT_ELECTROVORE "electrovore"
+// allows draining or recharging of power cells via nutrition
+#define TRAIT_ELECTROVORE_OBLIGATE "electrovore_obligate"

code/datums/elements/electrovoreable.dm

@@ -0,0 +1,77 @@
+/datum/element/electrovoreable
+	// Electrovore interaction handler for items (e.g. power cells).
+	// Logic is hooked via signals (COMSIG_ITEM_ATTACK_SELF).
+
+/datum/element/electrovoreable/Attach(datum/target)
+	. = ..()
+	if(!isitem(target))
+		return ELEMENT_INCOMPATIBLE
+
+	RegisterSignal(target, COMSIG_ITEM_ATTACK_SELF, PROC_REF(on_attack_self))
+
+/datum/element/electrovoreable/Detach(datum/target)
+	UnregisterSignal(target, COMSIG_ITEM_ATTACK_SELF)
+	return ..()
+
+/datum/element/electrovoreable/proc/on_attack_self(obj/item/source, mob/user)
+	SIGNAL_HANDLER
+
+	if(!isliving(user))
+		return
+	var/mob/living/living_user = user
+
+	// Must be some kind of electrovore to interact at all
+	if(!HAS_TRAIT(living_user, TRAIT_ELECTROVORE))
+		return
+
+	// Only cells should have special electrovore behavior
+	if(!istype(source, /obj/item/cell))
+		return
+	var/obj/item/cell/source_cell = source
+
+	// HELP: obligate electrovores only (charge the cell)
+	if(living_user.a_intent == I_HELP && HAS_TRAIT(living_user, TRAIT_ELECTROVORE_OBLIGATE))
+		if(source_cell.charge >= source_cell.maxcharge)
+			return COMPONENT_CANCEL_ATTACK_CHAIN
+
+		if(!living_user.nutrition)
+			living_user.show_message(span_warning("You feel too drained to charge [source_cell]."))
+			return COMPONENT_CANCEL_ATTACK_CHAIN
+
+		var/todrain = max(100, (living_user.nutrition * 0.2))
+		if(living_user.nutrition < todrain)
+			living_user.show_message(span_warning("You don't have enough energy to charge [source_cell]."))
+			return COMPONENT_CANCEL_ATTACK_CHAIN
+
+		living_user.show_message(span_warning("Power surges from you and flows into [source_cell], increasing its charge!"))
+		living_user.visible_message(span_notice("[living_user] squeezes [source_cell] tightly, charging it!"))
+
+		var/totransfer = min(todrain, ((source_cell.maxcharge - source_cell.charge) / 15))
+
+		living_user.adjust_nutrition(-todrain)
+		source_cell.give(min((totransfer * 15), (source_cell.maxcharge - source_cell.charge)))
+		source_cell.update_icon()
+
+		return COMPONENT_CANCEL_ATTACK_CHAIN
+
+	// HURT: drain energy for nutrition (obligate + freeform)
+	if(living_user.a_intent == I_HURT)
+		if(!source_cell.charge)
+			living_user.show_message(span_warning("You take a look at [source_cell] and notice it has nothing in it!"))
+			return COMPONENT_CANCEL_ATTACK_CHAIN
+
+		living_user.show_message(span_warning("Sparks fly from [source_cell] as you drain energy from it!"))
+		living_user.visible_message(span_danger("[living_user] causes sparks to emit from [source_cell] as it loses its charge!"))
+
+		var/coefficient = 0.9
+		var/totransfer = min(source_cell.charge, 1500)
+
+		living_user.adjust_nutrition((totransfer / 15) * coefficient)
+		source_cell.use(totransfer)
+		source_cell.update_icon()
+
+		var/datum/effect/effect/system/spark_spread/spark_effect = new /datum/effect/effect/system/spark_spread
+		spark_effect.set_up(3, 0, source_cell)
+		spark_effect.start()
+
+		return COMPONENT_CANCEL_ATTACK_CHAIN

code/modules/mob/living/carbon/human/species/station/traits/neutral.dm

@@ -259,6 +259,35 @@
 	..()
 	add_verb(H, /mob/living/carbon/human/proc/bloodsuck)
 
+/datum/trait/neutral/electrovore
+	name = "Electrovore, Obligate"
+	desc = "Makes you unable to gain nutrition from anything but electricity"
+	tutorial = "HELP intent lets you consume nutrition to charge a Cell by clicking it in your hand.<br>\
+	HARM intent drains battery charge and gives nutrition in exchange"
+
+	cost = 0
+	custom_only = FALSE
+	excludes = list(/datum/trait/neutral/electrovore_freeform)
+
+/datum/trait/neutral/electrovore/apply(var/datum/species/S, var/mob/living/carbon/human/human)
+	..()
+	ADD_TRAIT(human, TRAIT_ELECTROVORE, ROUNDSTART_TRAIT)
+	ADD_TRAIT(human, TRAIT_ELECTROVORE_OBLIGATE, ROUNDSTART_TRAIT)
+
+/datum/trait/neutral/electrovore_freeform
+	name = "Electrovore"
+	desc = "Allows you to drain power cells for nutrition."
+	tutorial = "This trait allows you to consume electricity!<br>\
+	Clicking a power cell in your hand on HARM intent drains its power for nutrition"
+
+	cost = 0
+	custom_only = FALSE
+	excludes = list(/datum/trait/neutral/electrovore)
+
+/datum/trait/neutral/electrovore_freeform/apply(var/datum/species/S, var/mob/living/carbon/human/human)
+	..()
+	ADD_TRAIT(human, TRAIT_ELECTROVORE, ROUNDSTART_TRAIT)
+
 /datum/trait/neutral/succubus_drain
 	name = "Succubus Drain"
 	desc = "Makes you able to gain nutrition from draining prey in your grasp."

code/modules/power/cell.dm

@@ -26,9 +26,11 @@
 	var/charge_amount = 25 // How much power to give, if self_recharge is true.  The number is in absolute cell charge, as it gets divided by CELLRATE later.
 	var/last_use = 0 // A tracker for use in self-charging
 	var/connector_type = "standard" //What connector sprite to use when in a cell charger, null if no connectors
-	var/charge_delay = 0 // How long it takes for the cell to start recharging after last use
+	var/charge_delay = 0  // How long it takes for the cell to start recharging after last use
 	var/robot_durability = 50
+
 	matter = list(MAT_STEEL = 700, MAT_GLASS = 50)
+
 	drop_sound = 'sound/items/drop/component.ogg'
 	pickup_sound = 'sound/items/pickup/component.ogg'
 
@@ -38,6 +40,7 @@
 
 /obj/item/cell/Initialize(mapload)
 	. = ..()
+	AddElement(/datum/element/electrovoreable)
 	c_uid = cell_uid++
 	update_icon()
 	if(self_recharge)

vorestation.dme

@@ -881,6 +881,7 @@
 #include "code\datums\elements\climbable.dm"
 #include "code\datums\elements\conflict_checking.dm"
 #include "code\datums\elements\connect_loc.dm"
+#include "code\datums\elements\electrovoreable.dm"
 #include "code\datums\elements\footstep.dm"
 #include "code\datums\elements\footstep_override.dm"
 #include "code\datums\elements\godmode.dm"