and finally, the modules folder. Now I can publish and take a break

code/modules/atmospherics/environmental/LINDA_fire.dm

@@ -42,6 +42,11 @@
 		active_hotspot.just_spawned = (current_cycle < SSair.times_fired)
 			//remove just_spawned protection if no longer processing this cell
 		SSair.add_to_active(src, 0)
+	else	
+		var/datum/gas_mixture/heating = air_contents.remove_ratio(exposed_volume/air_contents.volume)
+		heating.temperature = exposed_temperature
+		heating.react()
+		assume_air(heating)
 	return igniting
 
 //This is the icon for fire on turfs, also helps for nurturing small fires until they are full tile
@@ -231,7 +236,7 @@
 			else
 				chance_of_deletion = 100
 			if(prob(chance_of_deletion))
-				T.ScrapeAway()
+				T.Melt()
 			else
 				T.to_be_destroyed = FALSE
 				T.max_fire_temperature_sustained = 0
@@ -256,4 +261,4 @@
 	. = ..()
 	if(!isliving(loc))
 		return INITIALIZE_HINT_QDEL
-#undef INSUFFICIENT
+#undef INSUFFICIENT

code/modules/atmospherics/environmental/LINDA_turf_tile.dm

@@ -100,28 +100,38 @@
 
 	if (atmos_overlay_types)
 		for(var/overlay in atmos_overlay_types-new_overlay_types) //doesn't remove overlays that would only be added
-			vars["vis_contents"] -= overlay
+			vis_contents -= overlay
 
-	if (new_overlay_types.len)
+	if (length(new_overlay_types))
 		if (atmos_overlay_types)
-			vars["vis_contents"] += new_overlay_types - atmos_overlay_types //don't add overlays that already exist
+			vis_contents += new_overlay_types - atmos_overlay_types //don't add overlays that already exist
 		else
-			vars["vis_contents"] += new_overlay_types
+			vis_contents += new_overlay_types
 
 	UNSETEMPTY(new_overlay_types)
 	src.atmos_overlay_types = new_overlay_types
 
 /turf/open/proc/tile_graphic()
-	. = new /list
+	var/static/list/nonoverlaying_gases = typecache_of_gases_with_no_overlays()
 	if(air)
+		. = new /list
 		var/list/gases = air.gases
 		for(var/id in gases)
+			if (nonoverlaying_gases[id])
+				continue
 			var/gas = gases[id]
 			var/gas_meta = gas[GAS_META]
 			var/gas_overlay = gas_meta[META_GAS_OVERLAY]
 			if(gas_overlay && gas[MOLES] > gas_meta[META_GAS_MOLES_VISIBLE])
 				. += gas_overlay
 
+/proc/typecache_of_gases_with_no_overlays()
+	. = list()
+	for (var/gastype in subtypesof(/datum/gas))
+		var/datum/gas/gasvar = gastype
+		if (!initial(gasvar.gas_overlay))
+			.[gastype] = TRUE
+
 /////////////////////////////SIMULATION///////////////////////////////////
 
 #define LAST_SHARE_CHECK \