Revert "12/21 modernizations from TG live"

code/modules/holodeck/area_copy.dm

@@ -1,7 +1,7 @@
-/proc/DuplicateObject(var/atom/original, var/perfectcopy = TRUE, var/sameloc = FALSE, var/atom/newloc = null, var/nerf = FALSE, var/holoitem=FALSE)
+/proc/DuplicateObject(obj/original, var/perfectcopy = 0 , var/sameloc = 0, var/atom/newloc = null, var/nerf = 0)
 	if(!original)
 		return null
-	var/atom/O
+	var/obj/O
 
 	if(sameloc)
 		O = new original.type(original.loc)
@@ -20,19 +20,15 @@
 			else
 				O.vars[V] = original.vars[V]
 
-	if(istype(O, /obj))
-		var/obj/N = O
-		if(holoitem)
-			N.resistance_flags = LAVA_PROOF | FIRE_PROOF | UNACIDABLE | ACID_PROOF // holoitems do not burn
-
+	if(istype(O))
+		O.burn_state = FIRE_PROOF // holoitems do not burn
 		if(nerf && istype(O,/obj/item))
 			var/obj/item/I = O
 			I.damtype = STAMINA // thou shalt not
-
-		N.update_icon()
 		if(istype(O,/obj/machinery))
 			var/obj/machinery/M = O
 			M.power_change()
+	O.update_icon()
 	return O
 
 
@@ -80,7 +76,7 @@
 			continue
 
 		if(platingRequired)
-			if(isspaceturf(B))
+			if(istype(B, /turf/open/space))
 				continue
 
 		var/old_dir1 = T.dir
@@ -93,13 +89,13 @@
 		X.icon_state = old_icon_state1
 
 		for(var/obj/O in T)
-			var/obj/O2 = DuplicateObject(O , perfectcopy=TRUE, newloc = X, nerf=nerf_weapons, holoitem=TRUE)
+			var/obj/O2 = DuplicateObject(O , 1, newloc = X, nerf=nerf_weapons)
 			if(!O2) continue
 			copiedobjs += O2.GetAllContents()
 
 		for(var/mob/M in T)
 			if(istype(M, /mob/camera)) continue // If we need to check for more mobs, I'll add a variable
-			var/mob/SM = DuplicateObject(M , perfectcopy=TRUE, newloc = X, holoitem=TRUE)
+			var/mob/SM = DuplicateObject(M , 1, newloc = X)
 			copiedobjs += SM.GetAllContents()
 
 		var/global/list/forbidden_vars = list("type","stat","loc","locs","vars", "parent", "parent_type","verbs","ckey","key","x","y","z","contents", "luminosity")