atmos firelock, changes to temp blocking

code/game/objects/structures/crates_lockers/closets/secure/engineering.dm

@@ -98,6 +98,7 @@
 	new /obj/item/tank/internals/emergency_oxygen/engi(src)
 	new /obj/item/analyzer(src)
 	new /obj/item/holosign_creator/atmos(src)
+	new /obj/item/holosign_creator/firelock(src)
 	new /obj/item/watertank/atmos(src)
 	new /obj/item/clothing/suit/fire/atmos(src)
 	new /obj/item/clothing/head/hardhat/atmos(src)

code/game/objects/structures/holosign.dm

@@ -85,24 +85,14 @@
 	name = "holo firelock"
 	desc = "A holographic barrier resembling a firelock. Though it does not prevent solid objects or gas from passing through, temperature changes are kept out."
 	icon_state = "holo_firelock"
-	density = TRUE
+	density = FALSE
 	anchored = TRUE
 	alpha = 150
+	resistance_flags = FIRE_PROOF
 
-/obj/structure/holosign/barrier/firelock/BlockSuperconductivity()
+/obj/structure/holosign/barrier/firelock/blocksTemperature()
 	return TRUE
 
-/obj/structure/holosign/barrier/firelock/fire_act(exposed_temperature,exposed_volume)
-	return
-
-/obj/structure/holosign/barrier/firelock/CanPass(atom/movable/mover, turf/target)
-	if(mover.pass_flags & (PASSGLASS|PASSTABLE|PASSGRILLE))
-		return 1
-	if(iscarbon(mover))
-		var/mob/living/carbon/C = mover
-		if(allow_walk && C.m_intent == MOVE_INTENT_WALK)
-			return 1
-
 /obj/structure/holosign/barrier/cyborg
 	name = "Energy Field"
 	desc = "A fragile energy field that blocks movement. Excels at blocking lethal projectiles."