Improved pressure differential detection. Added Get PDiff verb in Debug, too.

code/game/objects/structures/false_walls.dm

@@ -19,6 +19,9 @@
 		if(T && istype(T,/turf/simulated) && T.zone)
 			var/datum/gas_mixture/environment = T.return_air()
 			cp = environment.return_pressure()
+		else
+			if(istype(T,/turf/simulated))
+				continue
 		if(cp<minp)minp=cp
 		if(cp>maxp)maxp=cp
 	return abs(minp-maxp)
@@ -46,6 +49,25 @@
 		return pdiff
 	return 0
 
+/client/verb/pdiff()
+	set name = "Get PDiff"
+	set category = "Debug"
+
+	if(!mob || !holder)
+		return
+	var/turf/T = mob.loc
+
+	if (!( istype(T, /turf) ))
+		return
+
+	var/pdiff = getOPressureDifferential(T)
+	var/fwpcheck=performFalseWallPressureCheck(T)
+	var/wpcheck=performWallPressureCheck(T)
+
+	src << "Pressure Differential (cardinals): [pdiff]"
+	src << "FWPCheck: [fwpcheck]"
+	src << "WPCheck: [wpcheck]"
+
 /obj/structure/falsewall
 	name = "wall"
 	desc = "A huge chunk of metal used to seperate rooms."

code/modules/admin/verbs/debug.dm

@@ -146,6 +146,7 @@ But you can call procs that are of type /mob/living/carbon/human/proc/ for that
 	t+= "Oxygen : [env.oxygen]\n"
 	t+= "Plasma : [env.toxins]\n"
 	t+= "CO2: [env.carbon_dioxide]\n"
+	t+= "Pressure: [env.return_pressure()]\n"
 
 	usr.show_message(t, 1)
 	feedback_add_details("admin_verb","ASL") //If you are copy-pasting this, ensure the 2nd parameter is unique to the new proc!