[TM] Tougher Airlocks + Airlock Assemblies on Destruction (#508)

Co-authored-by: Doubleumc <[email protected]>

code/__DEFINES/conflict.dm

@@ -249,7 +249,8 @@
 #define HEALTH_WALL_XENO_REFLECTIVE 300
 #define HEALTH_WALL_XENO_MEMBRANE_THICK 600
 
-#define HEALTH_DOOR 1200
+#define HEALTH_DOOR 2400
+#define HEALTH_ASSEMBLY 400
 #define HEALTH_DOOR_XENO 600
 #define HEALTH_DOOR_XENO_THICK 900
 

code/__DEFINES/xeno.dm

@@ -36,8 +36,9 @@
 #define XENO_HITS_TO_DESTROY_WINDOW_FRAME 3
 #define XENO_HITS_TO_DESTROY_R_WINDOW_FRAME 5
 #define XENO_HITS_TO_DESTROY_BOLTED_DOOR 10
-#define XENO_HITS_TO_DESTROY_DOOR 10
-#define XENO_HITS_TO_DESTROY_WELDED_DOOR 15
+#define XENO_HITS_TO_DESTROY_DOOR 12
+#define XENO_HITS_TO_DESTROY_WELDED_DOOR 20
+#define XENO_HITS_TO_DESTROY_AIRLOCK_ASSEMBLY 2
 #define XENO_HITS_TO_EXPOSE_WIRES_MIN 3
 #define XENO_HITS_TO_EXPOSE_WIRES_MAX 4
 #define XENO_HITS_TO_CUT_WIRES 10

code/game/machinery/doors/airlock.dm

@@ -133,12 +133,14 @@ GLOBAL_LIST_INIT(airlock_wire_descriptions, list(
 /obj/structure/machinery/door/airlock/deconstruct(disassembled = TRUE)
 	if(!disassembled)
 		if(width == 1)
+			new /obj/structure/airlock_assembly(loc)
 			new /obj/item/stack/rods(loc)
 			new /obj/item/stack/cable_coil/cut(loc)
 			new /obj/effect/spawner/gibspawner/robot(loc)
 			new /obj/effect/decal/cleanable/blood/oil(loc)
 		else // big airlock, big debris
 			for(var/turf/DT in locs) // locs = covered by airlock bounding box
+				new /obj/structure/airlock_assembly(DT)
 				new /obj/item/stack/rods(DT)
 				new /obj/item/stack/cable_coil/cut(DT)
 				new /obj/effect/spawner/gibspawner/robot(DT)

code/game/machinery/doors/multi_tile.dm

@@ -1,7 +1,7 @@
 //Terribly sorry for the code doubling, but things go derpy otherwise.
 /obj/structure/machinery/door/airlock/multi_tile
 	width = 2
-	damage_cap = 650 // Bigger = more endurable
+	damage_cap = 2600 // Bigger = more endurable
 	assembly_type = /obj/structure/airlock_assembly/multi_tile
 
 /obj/structure/machinery/door/airlock/multi_tile/close() //Nasty as hell O(n^2) code but unfortunately necessary

code/game/objects/structures/airlock_assembly.dm

@@ -13,7 +13,7 @@
 	name = "airlock assembly"
 	icon = 'icons/obj/structures/doors/airlock_assembly.dmi'
 	icon_state = "door_as_0"
-	anchored = FALSE
+	anchored = TRUE
 	density = TRUE
 	var/state = STATE_STANDARD
 	var/base_icon_state = ""
@@ -22,9 +22,63 @@
 	var/airlock_type = "generic" //the type path of the airlock once completed
 	var/glass = AIRLOCK_NOGLASS // see defines
 	var/created_name = null
+
+	var/damage = 0 //This should let marines destroy Assemblies spawned by destroyed airlocks now
+	var/damage_cap = HEALTH_ASSEMBLY // Assembly gets destroyed
 	/// Used for multitile assemblies
 	var/width = 1
 
+/obj/structure/airlock_assembly/proc/take_damage(dam, mob/M)
+	if(!dam || unacidable)
+		return FALSE
+
+	damage = max(0, damage + dam)
+
+	if(damage >= damage_cap)
+		if(M && istype(M))
+			SEND_SIGNAL(M, COMSIG_MOB_DESTROY_AIRLOCK, src)
+		to_chat(loc, SPAN_DANGER("[src] blows apart!"))
+		deconstruct(FALSE)
+		playsound(src, 'sound/effects/metal_crash.ogg', 25, 1)
+		return TRUE
+
+/obj/structure/airlock_assembly/ex_act(severity, explosion_direction, datum/cause_data/cause_data)
+	var/exp_damage = severity * EXPLOSION_DAMAGE_MULTIPLIER_DOOR
+	var/location = get_turf(src)
+	if(!density)
+		exp_damage *= EXPLOSION_DAMAGE_MODIFIER_DOOR_OPEN
+	if(take_damage(exp_damage)) // destroyed by explosion, shards go flying
+		create_shrapnel(location, rand(2,5), explosion_direction, , /datum/ammo/bullet/shrapnel/light, cause_data)
+
+/obj/structure/airlock_assembly/get_explosion_resistance()
+	if(density)
+		if(unacidable)
+			return 1000000
+		else
+			return (damage_cap-damage)/EXPLOSION_DAMAGE_MULTIPLIER_DOOR //this should exactly match the amount of damage needed to destroy the door
+	else
+		return FALSE
+
+/obj/structure/airlock_assembly/bullet_act(obj/projectile/P)
+	bullet_ping(P)
+	if(P.damage)
+		if(P.ammo.flags_ammo_behavior & AMMO_ROCKET)
+			take_damage(P.damage * 4, P.firer) // rockets wreck airlocks
+			return TRUE
+		else
+			take_damage(P.damage, P.firer)
+			return TRUE
+	return FALSE
+
+/obj/structure/airlock_assembly/handle_tail_stab(mob/living/carbon/xenomorph/xeno)
+
+	playsound(src, 'sound/effects/metalhit.ogg', 50, TRUE)
+	xeno.visible_message(SPAN_XENOWARNING("\The [xeno] strikes \the [src] with its tail!"), SPAN_XENOWARNING("You strike \the [src] with your tail!"))
+	xeno.emote("tail")
+	var/damage = xeno.melee_damage_upper * TAILSTAB_AIRLOCK_DAMAGE_MULTIPLIER
+	take_damage(damage, xeno)
+	return TAILSTAB_COOLDOWN_NORMAL
+
 /obj/structure/airlock_assembly/Initialize(mapload, ...)
 	. = ..()
 	update_icon()

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

@@ -692,6 +692,25 @@
 		SPAN_DANGER("We [M.slash_verb] \the [src]!"), null, 5, CHAT_TYPE_XENO_COMBAT)
 	return XENO_ATTACK_ACTION
 
+//This SHOULD, if I did it right, have xenos target assemblies finally please god let me have done it right
+/obj/structure/airlock_assembly/attack_alien(mob/living/carbon/xenomorph/M)
+	if(unslashable || health <= 0 && !HAS_TRAIT(usr, TRAIT_OPPOSABLE_THUMBS))
+		to_chat(M, SPAN_WARNING("We stare at \the [src] cluelessly."))
+		return XENO_NO_DELAY_ACTION
+
+	M.animation_attack_on(src)
+	playsound(src, 'sound/effects/metalhit.ogg', 25, 1)
+	update_health(rand(M.melee_damage_lower, M.melee_damage_upper) * M.melee_sentry_damage_multiplier)
+	if(health <= 0)
+		M.visible_message(SPAN_DANGER("[M] slices \the [src] apart!"), \
+		SPAN_DANGER("We slice \the [src] apart!"), null, 5, CHAT_TYPE_XENO_COMBAT)
+		if(!unacidable)
+			qdel(src)
+	else
+		M.visible_message(SPAN_DANGER("[M] [M.slashes_verb] \the [src]!"), \
+		SPAN_DANGER("We [M.slash_verb] \the [src]!"), null, 5, CHAT_TYPE_XENO_COMBAT)
+	return XENO_ATTACK_ACTION
+
 // Destroying reagent dispensers
 /obj/structure/reagent_dispensers/attack_alien(mob/living/carbon/xenomorph/M)
 	if(unslashable || health <= 0 && !HAS_TRAIT(usr, TRAIT_OPPOSABLE_THUMBS))

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

@@ -122,6 +122,19 @@ At bare minimum, make sure the relevant checks from parent types gets copied in
 
 	return DOOR_PENALTY
 
+////////////////////////////////////////
+//         AIRLOCK ASSEMBLIES         //
+////////////////////////////////////////
+
+/obj/structure/airlock_assembly/xeno_ai_obstacle(mob/living/carbon/xenomorph/X, direction, turf/target)
+	. = ..()
+	if(!.)
+		return
+
+	if(isfacehugger(X))
+		return -1 // We LOVE going under doors!
+
+	return DOOR_PENALTY
 
 /////////////////////////////
 //         TABLES          //