extreme optimization project to maybe fix game

code/game/objects/items/tanks/jetpack.dm

@@ -77,13 +77,7 @@
 		turn_off(user)
 		return
 
-	var/datum/gas_mixture/removed = air_contents.remove(num)
-	if(removed.total_moles() < 0.005)
-		turn_off(user)
-		return
-
-	var/turf/T = get_turf(user)
-	T.assume_air(removed)
+	assume_air_moles(air_contents, num)
 
 	return TRUE
 
@@ -116,13 +110,7 @@
 		turn_off(user)
 		return
 
-	var/datum/gas_mixture/removed = air_contents.remove(num)
-	if(removed.total_moles() < 0.005)
-		turn_off(user)
-		return
-
-	var/turf/T = get_turf(user)
-	T.assume_air(removed)
+	assume_air_moles(air_contents, num)
 
 	return TRUE
 

code/game/objects/items/tanks/tanks.dm

@@ -249,6 +249,18 @@
 	check_status()
 	return 1
 
+/obj/item/tank/assume_air_moles(datum/gas_mixture/giver, moles)
+	giver.transfer_to(air_contents, moles)
+
+	check_status()
+	return 1
+
+/obj/item/tank/assume_air_ratio(datum/gas_mixture/giver, ratio)
+	giver.transfer_ratio_to(air_contents, ratio)
+
+	check_status()
+	return 1
+
 /obj/item/tank/proc/remove_air_volume(volume_to_return)
 	if(!air_contents)
 		return null