Various fixes and performance tweaks

code/controllers/subsystem/air.dm

@@ -112,7 +112,7 @@ SUBSYSTEM_DEF(air)
 		if(state != SS_RUNNING)
 			return
 		resumed = 0
-		currentpart = SSAIR_EQUALIZE
+		currentpart = equalize_enabled ? SSAIR_EQUALIZE : SSAIR_ACTIVETURFS
 
 	if(currentpart == SSAIR_EQUALIZE)
 		timer = TICK_USAGE_REAL

code/game/turfs/space/space.dm

@@ -12,7 +12,7 @@
 	var/destination_x
 	var/destination_y
 
-	var/static/datum/gas_mixture/immutable/space/space_gas = new
+	var/static/datum/gas_mixture/immutable/space/space_gas
 	plane = PLANE_SPACE
 	layer = SPACE_LAYER
 	light_power = 0.25
@@ -26,6 +26,8 @@
 
 /turf/open/space/Initialize()
 	icon_state = SPACE_ICON_STATE
+	if(!space_gas)
+		space_gas = new
 	air = space_gas
 	update_air_ref(0)
 	vis_contents.Cut() //removes inherited overlays

code/modules/atmospherics/environmental/LINDA_system.dm

@@ -52,18 +52,20 @@
 			LAZYINITLIST(T.atmos_adjacent_turfs)
 			atmos_adjacent_turfs[T] = direction
 			T.atmos_adjacent_turfs[src] = opp_dir
-			T.__update_auxtools_turf_adjacency_info(isspaceturf(T.get_z_base_turf()))
 		else
 			if (atmos_adjacent_turfs)
 				atmos_adjacent_turfs -= T
 			if (T.atmos_adjacent_turfs)
 				T.atmos_adjacent_turfs -= src
-				T.__update_auxtools_turf_adjacency_info(isspaceturf(T.get_z_base_turf()))
 			UNSETEMPTY(T.atmos_adjacent_turfs)
+		T.__update_auxtools_turf_adjacency_info(isspaceturf(T.get_z_base_turf()), -1)
 	UNSETEMPTY(atmos_adjacent_turfs)
 	src.atmos_adjacent_turfs = atmos_adjacent_turfs
+	set_sleeping(!(canpass || canvpass))
 	__update_auxtools_turf_adjacency_info(isspaceturf(get_z_base_turf()))
 
+/turf/proc/set_sleeping(should_sleep)
+
 /turf/proc/__update_auxtools_turf_adjacency_info()
 
 //returns a list of adjacent turfs that can share air with this one.

code/modules/atmospherics/gasmixtures/gas_mixture.dm

@@ -21,7 +21,7 @@ GLOBAL_LIST_INIT(meta_gas_fusions, meta_gas_fusion_list())
 	var/initial_volume = CELL_VOLUME //liters
 	var/list/reaction_results
 	var/list/analyzer_results //used for analyzer feedback - not initialized until its used
-	var/_extools_pointer_gasmixture = 0 // Contains the index in the gas vector for this gas mixture in rust land. Don't. Touch. This. Var.
+	var/_extools_pointer_gasmixture // Contains the index in the gas vector for this gas mixture in rust land. Don't. Touch. This. Var.
 
 GLOBAL_LIST_INIT(auxtools_atmos_initialized,FALSE)