Revert "12/21 modernizations from TG live"

code/game/objects/structures.dm

@@ -1,17 +1,12 @@
 /obj/structure
 	icon = 'icons/obj/structures.dmi'
 	pressure_resistance = 8
-	obj_integrity = 300
-	max_integrity = 300
 	var/climb_time = 20
 	var/climb_stun = 2
 	var/climbable = FALSE
 	var/mob/structureclimber
-	var/broken = 0 //similar to machinery's stat BROKEN
 
 /obj/structure/New()
-	if (!armor)
-		armor = list(melee = 0, bullet = 0, laser = 0, energy = 0, bomb = 0, bio = 0, rad = 0, fire = 50, acid = 50)
 	..()
 	if(smooth)
 		queue_smooth(src)
@@ -20,15 +15,28 @@
 	if(ticker)
 		cameranet.updateVisibility(src)
 
+/obj/structure/blob_act(obj/effect/blob/B)
+	if(!density)
+		qdel(src)
+	if(prob(50))
+		qdel(src)
+
 /obj/structure/Destroy()
 	if(ticker)
 		cameranet.updateVisibility(src)
 	if(opacity)
-		UpdateAffectingLights()
+		update_light()
 	if(smooth)
 		queue_smooth_neighbors(src)
 	return ..()
 
+/obj/structure/mech_melee_attack(obj/mecha/M)
+	M.do_attack_animation(src)
+	if(M.damtype == BRUTE || M.damtype == BURN)
+		visible_message("<span class='danger'>[M.name] has hit [src].</span>")
+		return 1
+	return 0
+
 /obj/structure/attack_hand(mob/user)
 	. = ..()
 	add_fingerprint(user)
@@ -46,6 +54,10 @@
 	..()
 	add_fingerprint(usr)
 
+/obj/structure/proc/deconstruct(forced = FALSE)
+	qdel(src)
+
+
 /obj/structure/MouseDrop_T(atom/movable/O, mob/user)
 	. = ..()
 	if(!climbable)
@@ -54,9 +66,9 @@
 		if(user.canmove)
 			climb_structure(user)
 			return
-	if ((!( istype(O, /obj/item/weapon) ) || user.get_active_held_item() != O))
+	if ((!( istype(O, /obj/item/weapon) ) || user.get_active_hand() != O))
 		return
-	if(iscyborg(user))
+	if(isrobot(user))
 		return
 	if(!user.drop_item())
 		return
@@ -71,7 +83,7 @@
 	var/adjusted_climb_time = climb_time
 	if(user.restrained()) //climbing takes twice as long when restrained.
 		adjusted_climb_time *= 2
-	if(isalien(user))
+	if(istype(user, /mob/living/carbon/alien))
 		adjusted_climb_time *= 0.25 //aliens are terrifyingly fast
 	structureclimber = user
 	if(do_mob(user, user, adjusted_climb_time))
@@ -87,26 +99,3 @@
 				user << "<span class='warning'>You fail to climb onto [src].</span>"
 			density = 1
 	structureclimber = null
-
-/obj/structure/examine(mob/user)
-	..()
-	if(!(resistance_flags & INDESTRUCTIBLE))
-		if(resistance_flags & ON_FIRE)
-			user << "<span class='warning'>It's on fire!</span>"
-		if(broken)
-			user << "<span class='notice'>It looks broken.</span>"
-		var/examine_status = examine_status()
-		if(examine_status)
-			user << examine_status
-
-/obj/structure/proc/examine_status() //An overridable proc, mostly for falsewalls.
-	var/healthpercent = (obj_integrity/max_integrity) * 100
-	switch(healthpercent)
-		if(100 to INFINITY)
-			return  "It seems pristine and undamaged."
-		if(50 to 100)
-			return  "It looks slightly damaged."
-		if(25 to 50)
-			return  "It appears heavily damaged."
-		if(0 to 25)
-			return  "<span class='warning'>It's falling apart!</span>"