Adds Zombies (Admin-spawn) (#25381)

* fuck it good enough

* Apply suggestions from code review

Co-authored-by: Burzah <116982774+Burzah@users.noreply.github.com>
Signed-off-by: Contrabang <91113370+Contrabang@users.noreply.github.com>

* TRIPLE-REVIEW

* this should do it

* wow

* bruh

* FIX

* fix

* yeah

* sirryan review

* aaaaa

* Apply suggestions from code review

Co-authored-by: DGamerL <108773801+DGamerL@users.noreply.github.com>
Signed-off-by: Contrabang <91113370+Contrabang@users.noreply.github.com>

---------

Signed-off-by: Contrabang <91113370+Contrabang@users.noreply.github.com>
Co-authored-by: Burzah <116982774+Burzah@users.noreply.github.com>
Co-authored-by: DGamerL <108773801+DGamerL@users.noreply.github.com>

code/datums/atom_hud.dm

@@ -23,7 +23,8 @@ GLOBAL_LIST_INIT(huds, list(
 	ANTAG_HUD_ABDUCTOR = new/datum/atom_hud/antag/hidden(),
 	DATA_HUD_ABDUCTOR = new/datum/atom_hud/abductor(),
 	ANTAG_HUD_EVENTMISC = new/datum/atom_hud/antag/hidden(),
-	ANTAG_HUD_BLOB = new/datum/atom_hud/antag/hidden()
+	ANTAG_HUD_BLOB = new/datum/atom_hud/antag/hidden(),
+	ANTAG_HUD_ZOMBIE = new/datum/atom_hud/antag()
 	))
 
 /datum/atom_hud

code/datums/components/zombie_regen.dm

@@ -0,0 +1,155 @@
+
+/datum/component/zombie_regen/Initialize()
+	if(!ishuman(parent))
+		return COMPONENT_INCOMPATIBLE
+	START_PROCESSING(SSprocessing, src)
+
+/datum/component/zombie_regen/Destroy(force, silent)
+	STOP_PROCESSING(SSprocessing, src)
+	return ..()
+
+/datum/component/zombie_regen/process()
+	if(!ishuman(parent))
+		return
+	var/mob/living/carbon/human/zomboid = parent
+	if(zomboid.suiciding)
+		return
+	var/turf/current_turf = get_turf(zomboid)
+	var/healing_factor = max(1, 6 * (1 - current_turf.get_lumcount()))
+	if(zomboid.reagents.has_reagent("zombiecure3"))
+		healing_factor /= 3
+	if(zomboid.stat == DEAD)
+		healing_factor *= 2
+	zomboid.heal_overall_damage(healing_factor, healing_factor)
+	zomboid.adjustBrainLoss(-healing_factor)
+	if(zomboid.stat == DEAD && zomboid.getBruteLoss() <= 1 && zomboid.getFireLoss() <= 1 && (zomboid.timeofdeath + 15 SECONDS <= world.time))
+		var/datum/reagent/the_cure = zomboid.reagents.has_reagent("zombiecure4")
+		if(the_cure) // dead bodies dont process chemicals, so we gotta do it manually.
+			zomboid.reagents.remove_reagent("zombiecure4", the_cure.metabolization_rate * zomboid.metabolism_efficiency)
+			return
+		zombie_rejuv()
+		to_chat(zomboid, "<span class='zombielarge'>We... Awaken...</span>")
+
+	// If no client, but they were a player thats not SSD (debrained, revived but hasn't returned to body, etc)
+	if(zomboid.stat != CONSCIOUS || HAS_TRAIT(zomboid, TRAIT_HANDS_BLOCKED))
+		return
+	if(zomboid.client || isLivingSSD(zomboid))
+		return
+	if(zomboid.last_known_ckey && !zomboid.key) // make sure they were player inhabited and not admin ghosted
+		mindless_hunger()
+
+/datum/component/zombie_regen/proc/zombie_rejuv()
+	var/mob/living/carbon/human/zomboid = parent
+	zomboid.setToxLoss(0)
+	zomboid.setOxyLoss(0)
+	zomboid.setCloneLoss(0)
+	zomboid.setBrainLoss(0)
+	zomboid.setStaminaLoss(0)
+	zomboid.SetSleeping(0)
+	zomboid.SetParalysis(0, TRUE)
+	zomboid.SetStunned(0, TRUE)
+	zomboid.SetWeakened(0, TRUE)
+	zomboid.SetSlowed(0)
+	zomboid.SetImmobilized(0)
+	zomboid.SetKnockDown(0)
+	zomboid.SetLoseBreath(0)
+	zomboid.SetDizzy(0)
+	zomboid.SetJitter(0)
+	zomboid.SetStuttering(0)
+	zomboid.SetConfused(0)
+	zomboid.SetDrowsy(0)
+	zomboid.radiation = 0
+	zomboid.SetDruggy(0)
+	zomboid.SetHallucinate(0)
+	zomboid.bodytemperature = 310
+	zomboid.cure_blind()
+	zomboid.cure_nearsighted()
+	zomboid.CureMute()
+	zomboid.CureDeaf()
+	zomboid.CureTourettes()
+	zomboid.CureEpilepsy()
+	zomboid.CureCoughing()
+	zomboid.CureNervous()
+	zomboid.SetEyeBlind(0)
+	zomboid.SetEyeBlurry(0)
+	zomboid.SetDeaf(0)
+	zomboid.heal_overall_damage(1000, 1000)
+	zomboid.ExtinguishMob()
+	SEND_SIGNAL(zomboid, COMSIG_LIVING_CLEAR_STUNS)
+	zomboid.fire_stacks = 0
+	zomboid.on_fire = 0
+	zomboid.suiciding = 0
+	zomboid.set_nutrition(max(zomboid.nutrition, NUTRITION_LEVEL_HUNGRY))
+	if(zomboid.buckled) //Unbuckle the mob and clear the alerts.
+		zomboid.buckled.unbuckle_mob(src, force = TRUE)
+
+	var/datum/organ/heart/heart = zomboid.get_int_organ_datum(ORGAN_DATUM_HEART)
+	var/heart_type = zomboid.dna?.species?.has_organ["heart"]
+	if(!heart && heart_type)
+		var/obj/item/organ/internal/new_heart = new heart_type()
+		new_heart.insert(zomboid)
+
+	var/datum/organ/lungs/lungs = zomboid.get_int_organ_datum(ORGAN_DATUM_LUNGS)
+	var/lung_type = zomboid.dna?.species?.has_organ["lungs"]
+	if(!lungs && lung_type)
+		var/obj/item/organ/internal/new_lungs = new lung_type()
+		new_lungs.insert(zomboid)
+
+	zomboid.set_heartattack(FALSE)
+	zomboid.restore_blood()
+	zomboid.decaylevel = 0
+	zomboid.remove_all_embedded_objects()
+
+	zomboid.restore_all_organs()
+	if(zomboid.stat == DEAD)
+		zomboid.update_revive()
+	else if(zomboid.stat == UNCONSCIOUS)
+		zomboid.WakeUp()
+
+	zomboid.update_fire()
+	zomboid.regenerate_icons()
+	zomboid.restore_blood()
+	zomboid.update_eyes()
+
+	for(var/datum/disease/critical/crit in zomboid.viruses) // cure all crit conditions
+		crit.cure()
+
+/datum/component/zombie_regen/proc/mindless_hunger()
+	var/mob/living/carbon/human/zomboid = parent
+	var/list/targets = list()
+	for(var/mob/living/carbon/human/target in view(6, zomboid))
+		if(target.stat == CONSCIOUS && !HAS_TRAIT(target, TRAIT_I_WANT_BRAINS))
+			targets |= target
+			if(zomboid.Adjacent(target))
+				break // we're just gonna hit em
+
+	var/target
+	if(length(targets))
+		target = pick(targets)
+
+	if(zomboid.Adjacent(target) && safe_active_hand(zomboid))
+		zomboid.a_intent = INTENT_HARM
+		zomboid.ClickOn(target)
+		return
+
+	if(!target && prob(90)) // a small chance to wander
+		return
+
+	var/targetted_direction = pick(GLOB.cardinal)
+	if(target)
+		targetted_direction = get_dir(zomboid, target)
+
+	var/delay = zomboid.movement_delay()
+	if(IS_DIR_DIAGONAL(targetted_direction))
+		delay *= SQRT_2
+	zomboid.glide_for(delay)
+	step(zomboid, targetted_direction)
+
+/datum/component/zombie_regen/proc/safe_active_hand(mob/living/carbon/human/zomboid)
+	if(zomboid.get_organ("[zomboid.hand ? "l" : "r" ]_hand"))
+		return TRUE
+	zomboid.swap_hand()
+	if(zomboid.get_organ("[zomboid.hand ? "l" : "r" ]_hand"))
+		return TRUE
+	return FALSE
+

code/datums/datumvars.dm

@@ -1045,7 +1045,7 @@
 			to_chat(usr, "Mob doesn't exist anymore")
 			return
 
-		if(H.add_language(new_language))
+		if(H.add_language(new_language, TRUE))
 			to_chat(usr, "Added [new_language] to [H].")
 			message_admins("[key_name_admin(usr)] has given [key_name_admin(H)] the language [new_language]")
 			log_admin("[key_name(usr)] has given [key_name(H)] the language [new_language]")
@@ -1073,7 +1073,7 @@
 			to_chat(usr, "Mob doesn't exist anymore")
 			return
 
-		if(H.remove_language(rem_language.name))
+		if(H.remove_language(rem_language.name, TRUE))
 			to_chat(usr, "Removed [rem_language] from [H].")
 			message_admins("[key_name_admin(usr)] has removed language [rem_language] from [key_name_admin(H)]")
 			log_admin("[key_name(usr)] has removed language [rem_language] from [key_name(H)]")

code/datums/diseases/_MobProcs.dm

@@ -8,7 +8,7 @@
 
 
 /mob/proc/CanContractDisease(datum/disease/D)
-	if(stat == DEAD)
+	if(stat == DEAD && !D.allow_dead)
 		return FALSE
 
 	if(D.GetDiseaseID() in resistances)
@@ -30,6 +30,7 @@
 	if(!CanContractDisease(D))
 		return 0
 	AddDisease(D)
+	return TRUE
 
 
 /mob/proc/AddDisease(datum/disease/D, respect_carrier = FALSE)
@@ -127,6 +128,7 @@
 
 	if(passed)
 		AddDisease(D)
+	return passed
 
 
 /**

code/datums/diseases/_disease.dm

@@ -71,6 +71,8 @@ GLOBAL_LIST_INIT(diseases, subtypesof(/datum/disease))
 	var/list/required_organs = list()
 	var/needs_all_cures = TRUE
 	var/list/strain_data = list() //dna_spread special bullshit
+	/// Allow the virus to infect and process while the affected_mob is dead
+	var/allow_dead = FALSE
 
 /datum/disease/Destroy()
 	affected_mob = null
@@ -87,23 +89,24 @@ GLOBAL_LIST_INIT(diseases, subtypesof(/datum/disease))
 
 	stage = min(stage, max_stages)
 
-	if(!cure)
-		if(prob(stage_prob))
-			stage = min(stage + 1,max_stages)
-			if(!discovered && stage >= CEILING(max_stages * discovery_threshold, 1)) // Once we reach a late enough stage, medical HUDs can pick us up even if we regress
-				discovered = TRUE
-				affected_mob.med_hud_set_status()
-	else
-		if(prob(cure_chance))
-			stage = max(stage - 1, 1)
+	if(!cure && prob(stage_prob))
+		stage = min(stage + 1, max_stages)
+		if(!discovered && stage >= CEILING(max_stages * discovery_threshold, 1)) // Once we reach a late enough stage, medical HUDs can pick us up even if we regress
+			discovered = TRUE
+			affected_mob.med_hud_set_status()
+
+	return handle_cure_testing(cure)
+
+/datum/disease/proc/handle_cure_testing(has_cure = FALSE)
+	if(has_cure && prob(cure_chance))
+		stage = max(stage - 1, 1)
 
 	if(disease_flags & CURABLE)
-		if(cure && prob(cure_chance))
+		if(has_cure && prob(cure_chance))
 			cure()
 			return FALSE
 	return TRUE
 
-
 /datum/disease/proc/has_cure()
 	if(!(disease_flags & CURABLE))
 		return 0

code/datums/diseases/zombie_virus.dm

@@ -0,0 +1,141 @@
+/datum/disease/zombie
+	name = "Necrotizing Plague"
+	medical_name = "Advanced Resurrection Syndrome"
+	desc = "This virus infects humanoids and drives them insane with a hunger for flesh, along with possessing regenerative abilities."
+	max_stages = 7
+	spread_text = "Blood and Saliva"
+	spread_flags = BLOOD
+	cure_text = "Anti-plague viral solutions"
+	cures = list()
+	agent = ""
+	viable_mobtypes = list(/mob/living/carbon/human)
+	severity = BIOHAZARD
+	allow_dead = TRUE
+	disease_flags = CAN_CARRY
+	virus_heal_resistant = TRUE
+	stage_prob = 1
+	cure_chance = 20
+	/// How far this particular virus is in being cured (0-4)
+	var/cure_stage = 0
+
+/datum/disease/zombie/stage_act()
+	if(stage == 8)
+		// adminbus for immediate zombie
+		var/mob/living/carbon/human/H = affected_mob
+		if(!istype(H))
+			return FALSE
+		for(var/obj/item/organ/limb as anything in H.bodyparts)
+			if(!(limb.status & ORGAN_DEAD) && !limb.is_robotic())
+				limb.necrotize(TRUE, TRUE)
+
+	if(!..())
+		return FALSE
+	if(HAS_TRAIT(affected_mob, TRAIT_I_WANT_BRAINS) || affected_mob.mind?.has_antag_datum(/datum/antagonist/zombie))
+		handle_rot(TRUE)
+		stage = 7
+		return FALSE
+	switch(stage)
+		if(1) // cured by lvl 1 cure
+			if(prob(4))
+				to_chat(affected_mob, "<span class='warning'>[pick("Your scalp itches.", "Your skin feels flakey.")]</span>")
+			else if(prob(5))
+				to_chat(affected_mob, "<span class='warning'>Your [pick("back", "arm", "leg", "elbow", "head")] itches.</span>")
+		if(2)
+			if(prob(2))
+				to_chat(affected_mob, "<span class='danger'>Mucous runs down the back of your throat.</span>")
+			else if(prob(5))
+				to_chat(affected_mob, "<span class='warning'>[pick("You feel hungry.", "You crave for something to eat.")]</span>")
+		if(3) // cured by lvl 2 cure
+			if(prob(2))
+				affected_mob.emote("sneeze")
+			else if(prob(2))
+				affected_mob.emote("cough")
+			else if(prob(5))
+				to_chat(affected_mob, "<span class='warning'><i>[pick("So hungry...", "You'd kill someone for a bite of food...", "Hunger cramps seize you...")]</i></span>")
+			if(prob(5))
+				affected_mob.adjustToxLoss(1)
+		if(4) // shows up on medhuds
+			if(prob(2))
+				affected_mob.emote("stare")
+			else if(prob(2))
+				affected_mob.emote("drool")
+			else if(prob(5))
+				to_chat(affected_mob, "<span class='danger'>You feel a cold sweat form.</span>")
+			if(prob(25))
+				affected_mob.adjustToxLoss(1)
+		if(5, 6)  // 5 is cured by lvl 3 cure. 6+ needs lvl 4 cure
+			var/turf/T = get_turf(affected_mob)
+			if(T.get_lumcount() >= 0.5)
+				if(prob(5))
+					to_chat(affected_mob, "<span class='danger'>Those lights seem bright. It stings.</span>")
+				if(prob(25))
+					affected_mob.adjustFireLoss(2)
+			if(prob(2))
+				affected_mob.emote("drool")
+			if(stage == 6 && !affected_mob.reagents.has_reagent("zombiecure3")) // cure 3 can delay it, but not cure it
+				if(prob(10))
+					to_chat(affected_mob, "<span class='danger zombie'>You feel your flesh rotting.</span>")
+				handle_rot()
+		if(7)
+			if(!handle_rot(TRUE))
+				stage = 6
+				return
+
+
+
+/datum/disease/zombie/proc/handle_rot(forced = FALSE)
+	if(!prob(20) && !forced && affected_mob.stat != DEAD)
+		return FALSE
+	var/mob/living/carbon/human/H = affected_mob
+	if(!istype(H))
+		return FALSE
+	for(var/obj/item/organ/limb as anything in H.bodyparts)
+		if(!(limb.status & ORGAN_DEAD) && !limb.vital && !limb.is_robotic())
+			limb.necrotize()
+			return FALSE
+
+	for(var/obj/item/organ/limb as anything in H.bodyparts)
+		if(!(limb.status & ORGAN_DEAD) && !limb.is_robotic())
+			limb.necrotize(FALSE, TRUE)
+			return FALSE
+
+	if(!HAS_TRAIT(affected_mob, TRAIT_I_WANT_BRAINS))
+		affected_mob.AddComponent(/datum/component/zombie_regen)
+		ADD_TRAIT(affected_mob, TRAIT_I_WANT_BRAINS, ZOMBIE_TRAIT)
+		affected_mob.med_hud_set_health()
+		affected_mob.med_hud_set_status()
+		affected_mob.update_hands_hud()
+		H.update_body()
+	if(affected_mob.mind && !affected_mob.mind.has_antag_datum(/datum/antagonist/zombie))
+		affected_mob.mind.add_antag_datum(/datum/antagonist/zombie)
+	return TRUE
+
+
+/datum/disease/zombie/handle_cure_testing(has_cure = FALSE)
+	if(has_cure && prob(cure_chance))
+		stage = max(stage - 1, 0)
+
+	if(stage <= 0 && has_cure)
+		cure()
+		return FALSE
+	return TRUE
+
+/datum/disease/zombie/proc/update_cure_stage()
+	for(var/datum/reagent/zombie_cure/reag in affected_mob.reagents?.reagent_list)
+		cure_stage = max(cure_stage, reag.cure_level)
+	if(cure_stage)
+		var/stages = list("Stabilized", "Weakened", "Faltering", "Suppressed")
+		name = "[stages[cure_stage]] [initial(name)]"
+
+/datum/disease/zombie/has_cure()
+	update_cure_stage()
+	var/required_reagent = (stage + 1) / 2 // stage 1 can be cured by cure 1, stage 3 with 2, stage 5 with 3, stage 7 with 4
+	return cure_stage >= required_reagent
+
+/datum/disease/zombie/cure()
+	affected_mob.mind?.remove_antag_datum(/datum/antagonist/zombie)
+	REMOVE_TRAIT(affected_mob, TRAIT_I_WANT_BRAINS, ZOMBIE_TRAIT)
+	qdel(affected_mob.GetComponent(/datum/component/zombie_regen))
+	affected_mob.med_hud_set_health()
+	affected_mob.med_hud_set_status()
+	return ..()

code/datums/emote.dm

@@ -273,9 +273,14 @@
 	if(age_based && ishuman(user))
 		var/mob/living/carbon/human/H = user
 		// Vary needs to be true as otherwise frequency changes get ignored deep within playsound_local :(
-		playsound(user.loc, sound_path, sound_volume, TRUE, frequency = H.get_age_pitch(H.dna.species.max_age))
+		playsound(user.loc, sound_path, sound_volume, TRUE, frequency = H.get_age_pitch(H.dna.species.max_age) * alter_emote_pitch(user))
 	else
-		playsound(user.loc, sound_path, sound_volume, vary)
+		playsound(user.loc, sound_path, sound_volume, TRUE, frequency = alter_emote_pitch(user))
+
+/datum/emote/proc/alter_emote_pitch(mob/user)
+	if(HAS_TRAIT(user, TRAIT_I_WANT_BRAINS))
+		return 0.7
+	return 1
 
 /**
  * Send an emote to runechat for all (listening) users in the vicinity.

code/datums/mind.dm

@@ -417,6 +417,16 @@
 
 	. += _memory_edit_role_enabled(ROLE_ABDUCTOR)
 
+/datum/mind/proc/memory_edit_zombie(mob/living/H)
+	. = _memory_edit_header("zombie", list())
+	if(has_antag_datum(/datum/antagonist/zombie))
+		. += "<a href='byond://?src=[UID()];zombie=clear'>no</a>|<b><font color='red'>ZOMBIE</font></b>"
+		return
+	if(current.HasDisease(/datum/disease/zombie))
+		. += "<b>NO</b>|<a href='byond://?src=[UID()];zombie=zombie'>zombie</a>|<a href='byond://?src=[UID()];zombie=zombievirusno'><font color='red'>dis-infect</font></a>"
+	else
+		. += "<b>NO</b>|<a href='byond://?src=[UID()];zombie=zombie'>zombie</a>|<a href='byond://?src=[UID()];zombie=zombievirus'>infect</a>"
+
 /datum/mind/proc/memory_edit_eventmisc(mob/living/H)
 	. = _memory_edit_header("event", list())
 	if(src in SSticker.mode.eventmiscs)
@@ -546,6 +556,8 @@
 		sections["nuclear"] = memory_edit_nuclear(H)
 		/** Abductors **/
 		sections["abductor"] = memory_edit_abductor(H)
+		/** Zombies **/
+		sections["zombie"] = memory_edit_zombie(H)
 	sections["eventmisc"] = memory_edit_eventmisc(H)
 	/** TRAITOR ***/
 	sections["traitor"] = memory_edit_traitor()
@@ -1170,6 +1182,45 @@
 				log_admin("[key_name(usr)] has eventantag'ed [current].")
 				current.create_log(MISC_LOG, "[current] was made into an event antagonist by [key_name_admin(usr)]")
 
+	else if(href_list["zombie"])
+		switch(href_list["zombie"])
+			if("clear")
+				if(!has_antag_datum(/datum/antagonist/zombie))
+					return
+				remove_antag_datum(/datum/antagonist/zombie)
+				for(var/datum/disease/zombie/D in current.viruses)
+					D.cure()
+				if(ishuman(current))
+					var/mob/living/carbon/human/human_current = current
+					for(var/obj/item/organ/limb as anything in human_current.bodyparts)
+						if(limb.status & ORGAN_DEAD && !limb.is_robotic())
+							limb.status &= ~ORGAN_DEAD
+					human_current.update_body()
+				message_admins("[key_name_admin(usr)] has de-zombied'ed [key_name(current)].")
+				log_admin("[key_name(usr)] has de-zombied'ed [key_name(current)].")
+			if("zombie")
+				if(has_antag_datum(/datum/antagonist/zombie))
+					return
+				add_antag_datum(/datum/antagonist/zombie)
+				message_admins("[key_name_admin(usr)] has zombie'ed [key_name(current)].")
+				log_admin("[key_name(usr)] has zombie'ed [key_name(current)].")
+				current.create_log(MISC_LOG, "[key_name(current)] was made into an zombie by [key_name_admin(usr)]")
+			if("zombievirus")
+				if(has_antag_datum(/datum/antagonist/zombie) || !ishuman(current))
+					return
+				current.AddDisease(new /datum/disease/zombie)
+				message_admins("[key_name_admin(usr)] has given a zombie virus to [key_name(current)].")
+				log_admin("[key_name(usr)] has given a zombie virus to [key_name(current)].")
+				current.create_log(MISC_LOG, "[key_name(current)] was admin-infected with a zombie virus by [key_name_admin(usr)]")
+			if("zombievirusno")
+				if(has_antag_datum(/datum/antagonist/zombie))
+					return
+				for(var/datum/disease/zombie/D in current.viruses)
+					D.cure()
+				message_admins("[key_name_admin(usr)] has removed the zombie virus from [key_name(current)].")
+				log_admin("[key_name(usr)] has removed the zombie virus from [key_name(current)].")
+				current.create_log(MISC_LOG, "[key_name(current)] had their zombie virus admin-removed by [key_name_admin(usr)]")
+
 	else if(href_list["traitor"])
 		switch(href_list["traitor"])
 			if("clear")