[WIP] Xeno Endgame: Hive buffs + Destroyer game-ender caste

code/__DEFINES/dcs/signals/atom/mob/living/signals_xeno.dm

@@ -78,3 +78,6 @@
 /// From /mob/living/carbon/xenomorph/proc/hivemind_talk(): (message)
 #define COMSIG_XENO_TRY_HIVEMIND_TALK "xeno_try_hivemind_talk"
 	#define COMPONENT_OVERRIDE_HIVEMIND_TALK (1<<0)
+
+/// From /mob/living/carbon/xenomorph/proc/do_evolve()
+#define COMSIG_XENO_EVOLVE_TO_NEW_CASTE "xeno_evolve_to_new_caste"

code/__DEFINES/mobs.dm

@@ -381,3 +381,13 @@ GLOBAL_LIST_INIT(default_xeno_onmob_icons, list(
 #define MOBILITY_FLAGS_DEFAULT (MOBILITY_MOVE | MOBILITY_STAND)
 #define MOBILITY_FLAGS_CARBON_DEFAULT (MOBILITY_MOVE | MOBILITY_STAND | MOBILITY_REST | MOBILITY_LIEDOWN)
 #define MOBILITY_FLAGS_REST_CAPABLE_DEFAULT (MOBILITY_MOVE | MOBILITY_STAND | MOBILITY_REST | MOBILITY_LIEDOWN)
+
+// SLEEP CHECK DEATH
+
+#define SLEEP_CHECK_DEATH(X, A) \
+	sleep(X); \
+	if(QDELETED(A)) return; \
+	if(ismob(A)) { \
+		var/mob/sleep_check_death_mob = A; \
+		if(sleep_check_death_mob.stat == DEAD) return; \
+	}

code/__DEFINES/xeno.dm

@@ -255,6 +255,7 @@
 #define XENO_HEALTH_TIER_14 950 * XENO_UNIVERSAL_HPMULT
 #define XENO_HEALTH_QUEEN 1000 * XENO_UNIVERSAL_HPMULT
 #define XENO_HEALTH_IMMORTAL 1200 * XENO_UNIVERSAL_HPMULT
+#define XENO_HEALTH_DESTROYER 1500 * XENO_UNIVERSAL_HPMULT
 
 // Plasma bands
 #define XENO_NO_PLASMA 0
@@ -665,6 +666,7 @@
 #define XENO_SHIELD_SOURCE_GARDENER 8
 #define XENO_SHIELD_SOURCE_SHIELD_PILLAR 9
 #define XENO_SHIELD_SOURCE_CUMULATIVE_GENERIC 10
+#define XENO_SHIELD_SOURCE_DESTROYER_BULWARKSPELL 11
 
 //XENO CASTES
 #define XENO_CASTE_LARVA  "Bloody Larva"
@@ -693,13 +695,17 @@
 #define XENO_CASTE_CRUSHER    "Crusher"
 #define XENO_CASTE_RAVAGER    "Ravager"
 #define XENO_T3_CASTES    list(XENO_CASTE_BOILER, XENO_CASTE_PRAETORIAN, XENO_CASTE_CRUSHER, XENO_CASTE_RAVAGER)
-//special
+
+//Tier 4
+#define XENO_CASTE_DESTROYER "Destroyer"
 #define XENO_CASTE_QUEEN  "Queen"
+
+//special
 #define XENO_CASTE_PREDALIEN  "Predalien"
 #define XENO_CASTE_HELLHOUND  "Hellhound"
 #define XENO_SPECIAL_CASTES   list(XENO_CASTE_QUEEN, XENO_CASTE_PREDALIEN, XENO_CASTE_HELLHOUND)
 
-#define ALL_XENO_CASTES list(XENO_CASTE_LARVA, XENO_CASTE_PREDALIEN_LARVA, XENO_CASTE_FACEHUGGER, XENO_CASTE_LESSER_DRONE, XENO_CASTE_DRONE, XENO_CASTE_RUNNER, XENO_CASTE_SENTINEL, XENO_CASTE_DEFENDER, XENO_CASTE_BURROWER, XENO_CASTE_CARRIER, XENO_CASTE_HIVELORD, XENO_CASTE_LURKER, XENO_CASTE_WARRIOR, XENO_CASTE_SPITTER, XENO_CASTE_BOILER, XENO_CASTE_PRAETORIAN, XENO_CASTE_CRUSHER, XENO_CASTE_RAVAGER, XENO_CASTE_QUEEN, XENO_CASTE_PREDALIEN, XENO_CASTE_HELLHOUND)
+#define ALL_XENO_CASTES list(XENO_CASTE_LARVA, XENO_CASTE_PREDALIEN_LARVA, XENO_CASTE_FACEHUGGER, XENO_CASTE_LESSER_DRONE, XENO_CASTE_DRONE, XENO_CASTE_RUNNER, XENO_CASTE_SENTINEL, XENO_CASTE_DEFENDER, XENO_CASTE_BURROWER, XENO_CASTE_CARRIER, XENO_CASTE_HIVELORD, XENO_CASTE_LURKER, XENO_CASTE_WARRIOR, XENO_CASTE_SPITTER, XENO_CASTE_BOILER, XENO_CASTE_PRAETORIAN, XENO_CASTE_CRUSHER, XENO_CASTE_RAVAGER, XENO_CASTE_QUEEN, XENO_CASTE_PREDALIEN, XENO_CASTE_HELLHOUND, XENO_CASTE_DESTROYER)
 
 // Checks if two hives are allied to each other.
 // PARAMETERS:

code/datums/xeno_shields/shield_types/destroyer_shield.dm

@@ -0,0 +1,18 @@
+/datum/xeno_shield/destroyer_shield
+	duration = 10 SECONDS
+	decay_amount_per_second = 100
+	var/percent_maxhealth_damagecap = 0.1
+
+/datum/xeno_shield/destroyer_shield/on_hit(damage)
+	var/relative_damage_cap = linked_xeno.maxHealth * percent_maxhealth_damagecap
+
+	if(damage > relative_damage_cap)
+		damage = relative_damage_cap
+	return ..(damage)
+
+
+/datum/xeno_shield/destroyer_shield/on_removal()
+	. = ..()
+	if(linked_xeno)
+		// Remove the shield overlay early
+		linked_xeno.remove_suit_layer()

code/datums/xeno_shields/xeno_shield.dm

@@ -61,7 +61,7 @@
 // Use the type var if you need to construct a shield with different on hit behavior, damage reduction, etc.
 /mob/living/carbon/xenomorph/proc/add_xeno_shield(\
 	added_amount, shield_source, type = /datum/xeno_shield, \
-	duration = -1, decay_amount_per_second = 1, \
+	duration, decay_amount_per_second, \
 	add_shield_on = FALSE, max_shield = 200)
 	for (var/datum/xeno_shield/curr_shield in xeno_shields)
 		if (shield_source == curr_shield.shield_source)
@@ -78,12 +78,14 @@
 	new_shield.shield_source = shield_source
 	xeno_shields += new_shield
 	new_shield.last_damage_taken = world.time // So we don't insta-delete our shield.
-
-	new_shield.decay_amount_per_second = decay_amount_per_second
+	if(decay_amount_per_second)
+		new_shield.decay_amount_per_second = decay_amount_per_second
+	if(duration)
+		new_shield.duration = duration
 	new_shield.linked_xeno = src
 
-	if(duration > -1)
-		addtimer(CALLBACK(new_shield, TYPE_PROC_REF(/datum/xeno_shield, begin_decay)), duration)
+	if(new_shield.duration > -1)
+		addtimer(CALLBACK(new_shield, TYPE_PROC_REF(/datum/xeno_shield, begin_decay)), new_shield.duration)
 
 	overlay_shields()
 	return new_shield

code/game/jobs/role_authority.dm

@@ -760,6 +760,8 @@ I hope it's easier to tell what the heck this proc is even doing, unlike previou
 			M = /mob/living/carbon/xenomorph/predalien
 		if(XENO_CASTE_HELLHOUND)
 			M = /mob/living/carbon/xenomorph/hellhound
+		if(XENO_CASTE_DESTROYER)
+			M = /mob/living/carbon/xenomorph/destroyer
 	return M
 
 

code/game/objects/effects/effect_system/smoke.dm

@@ -660,3 +660,6 @@
 		S.time_to_live = lifetime
 	if(S.amount)
 		S.spread_smoke(direction)
+
+/datum/effect_system/smoke_spread/destroyer_doom
+	smoke_type = /obj/effect/particle_effect/smoke

code/game/objects/effects/temporary_visuals.dm

@@ -21,6 +21,19 @@
 	. = ..()
 	deltimer(timerid)
 
+//-----------------------------------------
+//HEAVY IMPACT
+//-----------------------------------------
+
+/obj/effect/temp_visual/heavy_impact
+	icon = 'icons/effects/heavyimpact.dmi'
+	icon_state = "heavyimpact"
+	duration = 13
+
+/obj/effect/temp_visual/heavyimpact/Initialize(mapload)
+	. = ..()
+	flick("heavyimpact", src)
+
 /obj/effect/temp_visual/dir_setting
 	randomdir = FALSE
 
@@ -95,4 +108,3 @@
 /obj/effect/temp_visual/dir_setting/bloodsplatter/synthsplatter
 	splatter_type = "csplatter"
 	color = BLOOD_COLOR_SYNTHETIC
-

code/modules/cm_aliens/XenoStructures.dm

@@ -844,6 +844,29 @@
 
 	return ..()
 
+/obj/effect/alien/destroyer_cocoon
+	name = "alien cocoon"
+	desc = "A large pulsating cocoon."
+	health = 500
+	icon_state = "Egg"
+
+	var/timer
+
+/obj/effect/alien/destroyer_cocoon/Initialize(mapload, pylon)
+	..()
+	timer = addtimer(CALLBACK(src, PROC_REF(hatch_destroyer)), 10 SECONDS, TIMER_UNIQUE|TIMER_STOPPABLE|TIMER_DELETE_ME)
+
+/// Roll for candidates to take the destroyer
+/obj/effect/alien/destroyer_cocoon/proc/roll_candidates()
+	return
+
+/// Hatch the destroyer from the egg
+/obj/effect/alien/destroyer_cocoon/proc/hatch_destroyer()
+	// BIRDTALON ADD HIVENUMBER STUFF
+	var/mob/living/carbon/xenomorph/destroyer/destroyer = new(get_turf(src))
+	destroyer.emote("roar")
+	qdel(src)
+
 /obj/item/explosive/grenade/alien
 	name = "alien grenade"
 	desc = "an alien grenade."