a

code/__DEFINES/mob_hud.dm

@@ -13,6 +13,7 @@
 #define XENO_HOSTILE_SLOW "13" // xeno-inflicted slow. used by a bunch of MOBA xenos stuff
 #define XENO_HOSTILE_TAG "14" // dancer prae 'tag'
 #define XENO_HOSTILE_FREEZE "15" // Any xeno-inflifcted root
+#define XENO_EXECUTE "28" // Execute thershold, vampire
 
 #define HEALTH_HUD_XENO "16" // health HUD for xenos
 #define PLASMA_HUD "17" // indicates the plasma level of xenos.
@@ -45,6 +46,7 @@
 #define MOB_HUD_FACTION_PMC 15
 #define MOB_HUD_HUNTER 16
 #define MOB_HUD_HUNTER_CLAN 17
+#define MOB_HUD_EXECUTE 18
 
 //for SL/FTL/LZ targeting on locator huds
 #define TRACKER_SL "track_sl"

code/datums/effects/xeno_strains/execute_tag.dm

@@ -0,0 +1,41 @@
+/datum/effects/execute_tag
+	effect_name = "execute tag"
+	duration = null
+	flags = DEL_ON_DEATH | INF_DURATION
+
+
+/datum/effects/execute_tag/New(atom/A, mob/from = null, last_dmg_source = null, zone = "chest", ttl = 35)
+	. = ..(A, from, last_dmg_source, zone)
+
+	addtimer(CALLBACK(GLOBAL_PROC, GLOBAL_PROC_REF(qdel), src), ttl)
+
+	if (ishuman(A))
+		var/mob/living/carbon/human/H = A
+		H.update_xeno_hostile_hud()
+
+
+/datum/effects/execute_tag/validate_atom(mob/living/carbon/H)
+	if (!isxeno_human(H) || H.stat == DEAD)
+		return FALSE
+	return ..()
+
+
+/datum/effects/execute_tag/process_mob()
+	. = ..()
+
+	// Also checks for null atoms
+	if (!istype(affected_atom, /mob/living/carbon/human))
+		return
+
+	var/mob/living/carbon/human/H = affected_atom
+	H.update_xeno_hostile_hud()
+
+
+/datum/effects/execute_tag/Destroy()
+	if (!ishuman(affected_atom))
+		return ..()
+
+	var/mob/living/carbon/human/H = affected_atom
+	addtimer(CALLBACK(H, TYPE_PROC_REF(/mob/living/carbon/human, update_xeno_hostile_hud)), 3)
+
+	return ..()

code/datums/mob_hud.dm

@@ -18,7 +18,8 @@ GLOBAL_LIST_INIT_TYPED(huds, /datum/mob_hud, list(
 	MOB_HUD_FACTION_CLF = new /datum/mob_hud/faction/clf(),
 	MOB_HUD_FACTION_PMC = new /datum/mob_hud/faction/pmc(),
 	MOB_HUD_HUNTER = new /datum/mob_hud/hunter_hud(),
-	MOB_HUD_HUNTER_CLAN = new /datum/mob_hud/hunter_clan()
+	MOB_HUD_HUNTER_CLAN = new /datum/mob_hud/hunter_clan(),
+	MOB_HUD_EXECUTE = new /datum/mob_hud/execute_hud(),
 	))
 
 /datum/mob_hud
@@ -167,6 +168,9 @@ GLOBAL_LIST_INIT_TYPED(huds, /datum/mob_hud, list(
 /datum/mob_hud/xeno_hostile
 	hud_icons = list(XENO_HOSTILE_ACID, XENO_HOSTILE_SLOW, XENO_HOSTILE_TAG, XENO_HOSTILE_FREEZE)
 
+/datum/mob_hud/execute_hud
+	hud_icons = list(XENO_EXECUTE)
+
 /datum/mob_hud/hunter_clan
 	hud_icons = list(HUNTER_CLAN)
 
@@ -259,6 +263,11 @@ GLOBAL_LIST_INIT_TYPED(huds, /datum/mob_hud, list(
 		var/datum/mob_hud/hostile_hud = GLOB.huds[MOB_HUD_XENO_HOSTILE]
 		hostile_hud.remove_hud_from(src, src)
 
+	if (execute_hud)
+		execute_hud = FALSE
+		var/datum/mob_hud/execute = GLOB.huds[MOB_HUD_EXECUTE]
+		execute.remove_hud_from(src, src)
+
 
 
 /mob/proc/refresh_huds(mob/source_mob)
@@ -772,6 +781,22 @@ GLOBAL_DATUM(hud_icon_hudfocus, /image)
 	var/image/holder = hud_list[HOLOCARD_HUD]
 	holder.icon_state = holo_card_color ? "holo_card_[holo_card_color]" : "hudblank"
 
+// Vampire Execute HUD
+/mob/living/carbon/human/proc/update_execute_hud()
+	var/image/execute_holder = hud_list[XENO_EXECUTE]
+
+	execute_holder.icon_state = "hudblank"
+	execute_holder.overlays.Cut()
+
+	var/execute_found = FALSE
+	for (var/datum/effects/execute_tag/ET in effects_list)
+		if (!QDELETED(ET))
+			execute_found = TRUE
+			break
+
+	if (execute_found)
+		execute_holder.overlays += image('icons/mob/hud/hud.dmi', src, "prae_tag")
+
 // Xeno "hostile" HUD
 /mob/living/carbon/human/proc/update_xeno_hostile_hud()
 	var/image/acid_holder = hud_list[XENO_HOSTILE_ACID]

code/modules/mob/living/carbon/human/human_defines.dm

@@ -136,7 +136,7 @@
 	var/last_chew = 0
 
 	//taken from human.dm
-	hud_possible = list(HEALTH_HUD, STATUS_HUD, STATUS_HUD_OOC, STATUS_HUD_XENO_INFECTION, STATUS_HUD_XENO_CULTIST, ID_HUD, WANTED_HUD, ORDER_HUD, XENO_HOSTILE_ACID, XENO_HOSTILE_SLOW, XENO_HOSTILE_TAG, XENO_HOSTILE_FREEZE, HUNTER_CLAN, HUNTER_HUD, FACTION_HUD, HOLOCARD_HUD)
+	hud_possible = list(HEALTH_HUD, STATUS_HUD, STATUS_HUD_OOC, STATUS_HUD_XENO_INFECTION, STATUS_HUD_XENO_CULTIST, ID_HUD, WANTED_HUD, ORDER_HUD, XENO_HOSTILE_ACID, XENO_HOSTILE_SLOW, XENO_HOSTILE_TAG, XENO_HOSTILE_FREEZE, XENO_EXECUTE, HUNTER_CLAN, HUNTER_HUD, FACTION_HUD, HOLOCARD_HUD)
 	var/embedded_flag //To check if we've need to roll for damage on movement while an item is imbedded in us.
 	var/allow_gun_usage = TRUE
 	var/melee_allowed = TRUE

code/modules/mob/living/carbon/human/life.dm

@@ -95,3 +95,11 @@
 	// Remove this once effects have been ported to trait signals (blinded, dazed, etc)
 	if(stat != .)
 		handle_regular_hud_updates()
+
+	for (var/datum/effects/execute_tag/target_tag in src.effects_list)
+		qdel(target_tag)
+
+	if (HAS_TRAIT(src, TRAIT_KNOCKEDOUT) || stat == UNCONSCIOUS)
+		new /datum/effects/execute_tag(src, src, , , 35)
+
+	src.update_execute_hud()

code/modules/mob/living/carbon/xenomorph/Xenomorph.dm

@@ -218,6 +218,7 @@
 	//////////////////////////////////////////////////////////////////
 	var/xeno_mobhud = FALSE //whether the xeno mobhud is activated or not.
 	var/xeno_hostile_hud = FALSE // 'Hostile' HUD - the verb Xenos use to see tags, etc on humans
+	var/execute_hud = FALSE // Crit HUD, only visible to vampire lurkers
 	var/list/plasma_types = list() //The types of plasma the caste contains
 	var/list/xeno_shields = list() // List of /datum/xeno_shield that holds all active shields on the Xeno.
 	var/acid_splash_cooldown = 5 SECONDS //Time it takes between acid splash retaliate procs

code/modules/mob/living/carbon/xenomorph/strains/castes/lurker/vampire.dm

@@ -25,4 +25,8 @@
 	lurker.damage_modifier -= XENO_DAMAGE_MOD_VERY_SMALL
 	lurker.attack_speed_modifier -= 2
 
+	var/datum/mob_hud/execute_hud = GLOB.huds[MOB_HUD_EXECUTE]
+	execute_hud.add_hud_to(lurker, lurker)
+	lurker.execute_hud = TRUE
+
 	lurker.recalculate_everything()

colonialmarines.dme

@@ -475,6 +475,7 @@
 #include "code\datums\effects\stamina\stamina_human.dm"
 #include "code\datums\effects\xeno_strains\boiler_trap.dm"
 #include "code\datums\effects\xeno_strains\dancer_tag.dm"
+#include "code\datums\effects\xeno_strains\execute_tag.dm"
 #include "code\datums\effects\xeno_strains\gain_xeno_cooldown_reduction_on_slash.dm"
 #include "code\datums\effects\xeno_strains\prae_acid_stacks.dm"
 #include "code\datums\effects\xeno_strains\xeno_buff.dm"