ATMOS Firelocks and more

code/modules/atmospherics/environmental/LINDA_turf_tile.dm

@@ -387,8 +387,6 @@
 	if(blocks_air)
 		..()
 		return
-
-	
 	for (var/atom/movable/G in src)
 		if (G.blocksTemperature())
 			return
@@ -410,10 +408,8 @@
 
 				if(!neighbor.thermal_conductivity)
 					continue
-
 				if(neighbor.archived_cycle < SSair.times_fired)
 					neighbor.archive()
-
 				neighbor.neighbor_conduct_with_src(src)
 
 				neighbor.consider_superconductivity()

code/modules/reagents/chemistry/reagents/other_reagents.dm

@@ -59,7 +59,7 @@
 		B = new(T)
 	if(data["blood_DNA"])
 		B.blood_DNA[data["blood_DNA"]] = data["blood_type"]
-	if(!B.reagents)
+	if(B.reagents)
 		B.reagents.add_reagent(id, reac_volume)
 	B.update_icon()
 

code/modules/research/designs/misc_designs.dm

@@ -408,6 +408,16 @@
 	category = list("Equipment")
 	departmental_flags = DEPARTMENTAL_FLAG_ENGINEERING
 
+/datum/design/holosignfirelock
+	name = "ATMOS Holofirelock Projector"
+	desc = "A holographic projector that creates holographic barriers that prevent changes in temperature conditions."
+	id = "holosignfirelock"
+	build_type = PROTOLATHE
+	materials = list(MAT_METAL = 5000, MAT_GLASS = 1000, MAT_GOLD = 1000, MAT_SILVER = 1000)
+	build_path = /obj/item/holosign_creator/firelock
+	category = list("Equipment")
+	departmental_flags = DEPARTMENTAL_FLAG_ENGINEERING
+
 /datum/design/forcefield_projector
 	name = "Forcefield Projector"
 	desc = "A device which can project temporary forcefields to seal off an area."

code/modules/research/techweb/all_nodes.dm

@@ -413,7 +413,7 @@
 	display_name = "Electromagnetic Theory"
 	description = "Study into usage of frequencies in the electromagnetic spectrum."
 	prereq_ids = list("base")
-	design_ids = list("holosign", "holosignsec", "holosignengi", "holosignatmos", "inducer", "tray_goggles", "holopad")
+	design_ids = list("holosign", "holosignsec", "holosignengi", "holosignatmos", "holosignfirelock", "inducer", "tray_goggles", "holopad")
 	research_costs = list(TECHWEB_POINT_TYPE_GENERIC = 2500)
 	export_price = 5000