Overhauls Resin ability, deletes unused xeno sprites, fixes few things.

code/game/objects/structures/alien/alien egg.dm

@@ -4,8 +4,7 @@
 	desc = "It looks like a weird egg."
 	name = "egg"
 	icon_state = "egg_growing"
-	density = 0
-	anchored = 1
+	density = FALSE
 	var/progress = 0
 
 /obj/structure/alien/egg/Initialize()

code/game/objects/structures/alien/alien.dm

@@ -1,10 +1,11 @@
-/obj/structure/alien //Gurg Addition, framework for alien eggs.
+/obj/structure/alien //Gurg Addition, framework for alien eggs and structures.
 	name = "alien thing"
 	desc = "There's something alien about this."
 	icon = 'icons/mob/alien.dmi'
 	layer = ABOVE_JUNK_LAYER
 	var/health = 50
 	unacidable = TRUE
+	anchored = TRUE
 
 /obj/structure/alien/proc/healthcheck()
 	if(health <=0)
@@ -40,22 +41,51 @@
 		tforce = 10
 	else
 		tforce = AM:throwforce
-	playsound(loc, 'sound/effects/attackblob.ogg', 100, 1)
+	playsound(src, 'sound/effects/attackblob.ogg', 100, 1)
 	health = max(0, health - tforce)
 	healthcheck()
 	..()
 	return
 
-/obj/structure/alien/attack_generic()
-	attack_hand(usr)
+/obj/structure/alien/attack_generic(var/mob/user, var/damage, var/attack_verb)
+	visible_message("<span class='danger'>[user] [attack_verb] the [src]!</span>")
+	playsound(src, 'sound/effects/attackblob.ogg', 100, 1)
+	user.do_attack_animation(src)
+	health -= damage
+	healthcheck()
+	return
 
-/obj/structure/alien/attackby(var/obj/item/weapon/W, var/mob/user)
-	health = max(0, health - W.force)
-	playsound(loc, 'sound/effects/attackblob.ogg', 100, 1)
+/obj/structure/alien/attackby(obj/item/weapon/W as obj, mob/user as mob)
+
+	user.setClickCooldown(user.get_attack_speed(W))
+	var/aforce = W.force
+	health = max(0, health - aforce)
+	playsound(src, 'sound/effects/attackblob.ogg', 100, 1)
+	visible_message("<span class='danger'>[user] attacks the [src]!</span>")
 	healthcheck()
 	..()
 	return
 
+/obj/structure/alien/attack_hand()
+	usr.setClickCooldown(DEFAULT_ATTACK_COOLDOWN)
+	if (HULK in usr.mutations)
+		visible_message("<span class='warning'>[usr] destroys the [name]!</span>")
+		health = 0
+	else
+
+		// Aliens can get straight through these.
+		if(istype(usr,/mob/living/carbon))
+			var/mob/living/carbon/M = usr
+			if(locate(/obj/item/organ/internal/xenos/hivenode) in M.internal_organs)
+				visible_message ("<span class='warning'>[usr] strokes the [name] and it melts away!</span>", 1)
+				health = 0
+				healthcheck()
+				return
+		visible_message("<span class='warning'>[usr] claws at the [name]!</span>")
+		health -= rand(5,10)
+	healthcheck()
+	return
+
 /obj/structure/alien/CanPass(atom/movable/mover, turf/target, height=0, air_group=0)
 	if(air_group) return 0
 	if(istype(mover) && mover.checkpass(PASSGLASS))

code/game/objects/structures/alien/resin structures.dm

@@ -0,0 +1,17 @@
+/obj/structure/alien/wall
+	name = "resin wall"
+	desc = "A disgusting mass of purple slime solidified into a wall."
+	icon_state = "resin wall"
+	health = 200
+	opacity = 1
+	density = TRUE
+	can_atmos_pass = ATMOS_PASS_NO
+
+/obj/structure/alien/membrane
+	name = "resin membrane"
+	desc = "A revolting mass of purple slime, it appears to be stretched enough to be transparent."
+	icon_state = "resin membrane"
+	opacity = 0
+	health = 120
+	density = TRUE
+	can_atmos_pass = ATMOS_PASS_NO