Starts work on unbreaking CanPass()

code/ZAS/Atom.dm

@@ -1,6 +1,28 @@
 
 
 /atom/var/pressure_resistance = ONE_ATMOSPHERE
+/atom/var/can_atmos_pass = ATMOS_PASS_YES
+
+// Used to determine if airflow/zones can pass this atom.
+/atom/proc/CanZASPass(turf/T, is_zone)
+	switch(can_atmos_pass)
+		if(ATMOS_PASS_PROC)
+			return ATMOS_PASS_YES
+		if(ATMOS_PASS_DENSITY)
+			return !density
+		else
+			return can_atmos_pass
+//	return (!density || is_zone)
+
+/*
+/atom/proc/CanAtmosPass(turf/T)
+	switch (CanAtmosPass)
+		if (ATMOS_PASS_PROC)
+			return ATMOS_PASS_YES
+		if (ATMOS_PASS_DENSITY)
+			return !density
+		else
+			return CanAtmosPass
 
 /atom/proc/CanPass(atom/movable/mover, turf/target, height=1.5, air_group = 0)
 	//Purpose: Determines if the object (or airflow) can pass this atom.
@@ -9,13 +31,21 @@
 	//Outputs: Boolean if can pass.
 
 	return (!density || !height || air_group)
+*/
+// Used to see if objects can freely move past this atom.
+// Airflow and ZAS zones now uses CanZASPass() instead.
+/atom/proc/CanPass(atom/movable/mover, turf/target, height=1.5, air_group = 0)
+	return !density
+
+/turf/can_atmos_pass = ATMOS_PASS_NO
 
 /turf/CanPass(atom/movable/mover, turf/target, height=1.5,air_group=0)
-	if(!target) return 0
+	if(!target) return FALSE
 
 	if(istype(mover)) // turf/Enter(...) will perform more advanced checks
 		return !density
 
+	/*
 	else // Now, doing more detailed checks for air movement and air group formation
 		if(target.blocks_air||blocks_air)
 			return 0
@@ -29,6 +59,19 @@
 					return 0
 
 		return 1
+	*/
+
+/turf/CanZASPass(turf/T, is_zone)
+	if(T.blocks_air || src.blocks_air)
+		return FALSE
+	for(var/obj/obstacle in src)
+		if(!obstacle.CanZASPass(T, is_zone))
+			return FALSE
+	if(T != src)
+		for(var/obj/obstacle in T)
+			if(!obstacle.CanZASPass(src, is_zone))
+				return FALSE
+	return TRUE
 
 //Convenience function for atoms to update turfs they occupy
 /atom/movable/proc/update_nearby_tiles(need_rebuild)
@@ -46,12 +89,18 @@
 // AIR_BLOCKED - Blocked
 // ZONE_BLOCKED - Not blocked, but zone boundaries will not cross.
 // BLOCKED - Blocked, zone boundaries will not cross even if opened.
+/*
 atom/proc/c_airblock(turf/other)
 	#ifdef ZASDBG
 	ASSERT(isturf(other))
 	#endif
 	return (AIR_BLOCKED*!CanPass(null, other, 0, 0))|(ZONE_BLOCKED*!CanPass(null, other, 1.5, 1))
-
+*/
+atom/proc/c_airblock(turf/other)
+	#ifdef ZASDBG
+	ASSERT(isturf(other))
+	#endif
+	return (AIR_BLOCKED*!CanZASPass(other, FALSE))|(ZONE_BLOCKED*!CanZASPass(other, TRUE))
 
 turf/c_airblock(turf/other)
 	#ifdef ZASDBG

code/__defines/atmos.dm

@@ -93,3 +93,10 @@
 #define ATMOSTANK_CO2           25000 // CO2 and PH are not critically important for station, only for toxins and alternative coolants, no need to store a lot of those.
 #define ATMOSTANK_PHORON        25000
 #define ATMOSTANK_NITROUSOXIDE  10000 // N2O doesn't have a real useful use, i guess it's on station just to allow refilling of sec's riot control canisters?
+
+// Used for quickly making certain things allow airflow or not.
+// More complicated, conditional abilities for airflow should use ATMOS_PASS_PROC and override CanZASPass().
+#define ATMOS_PASS_YES		1
+#define ATMOS_PASS_NO		0
+#define ATMOS_PASS_PROC		-1 // Asks CanZASPass()
+#define ATMOS_PASS_DENSITY	-2 // Just checks density.

code/game/machinery/OpTable.dm

@@ -48,13 +48,10 @@
 		qdel(src)
 	return
 
-/obj/machinery/optable/CanPass(atom/movable/mover, turf/target, height=0, air_group=0)
-	if(air_group || (height==0)) return 1
-
+/obj/machinery/optable/CanPass(atom/movable/mover, turf/target)
 	if(istype(mover) && mover.checkpass(PASSTABLE))
-		return 1
-	else
-		return 0
+		return TRUE
+	return FALSE
 
 /obj/machinery/optable/MouseDrop_T(obj/O as obj, mob/user as mob)
 

code/game/machinery/doors/airlock.dm

@@ -750,7 +750,7 @@ About the new airlock wires panel:
 			if (user)
 				src.attack_ai(user)
 
-/obj/machinery/door/airlock/CanPass(atom/movable/mover, turf/target, height=0, air_group=0)
+/obj/machinery/door/airlock/CanPass(atom/movable/mover, turf/target)
 	if (src.isElectrified())
 		if (istype(mover, /obj/item))
 			var/obj/item/i = mover

code/game/machinery/doors/blast_door.dm

@@ -259,12 +259,14 @@
 	if(stat & BROKEN)
 		stat &= ~BROKEN
 
-
-/obj/machinery/door/blast/CanPass(atom/movable/mover, turf/target, height=0, air_group=0)
-	if(air_group) return 1
+/*
+// This replicates the old functionality coded into CanPass() for this object, however it appeared to have made blast doors not airtight.
+// If for some reason this is actually needed for something important, uncomment this.
+/obj/machinery/door/blast/CanZASPass(turf/T, is_zone)
+	if(is_zone)
+		return TRUE
 	return ..()
-
-
+*/
 
 // SUBTYPE: Regular
 // Your classical blast door, found almost everywhere.

code/game/machinery/doors/door.dm

@@ -9,6 +9,7 @@
 	anchored = 1
 	opacity = 1
 	density = 1
+	can_atmos_pass = ATMOS_PASS_DENSITY
 	layer = DOOR_OPEN_LAYER
 	var/open_layer = DOOR_OPEN_LAYER
 	var/closed_layer = DOOR_CLOSED_LAYER
@@ -135,13 +136,16 @@
 			else
 				do_animate("deny")
 
-/obj/machinery/door/CanPass(atom/movable/mover, turf/target, height=0, air_group=0)
-	if(air_group) return !block_air_zones
+/obj/machinery/door/CanPass(atom/movable/mover, turf/target)
 	if(istype(mover) && mover.checkpass(PASSGLASS))
 		return !opacity
 	return !density
-
-
+/*
+/obj/machinery/door/CanZASPass(turf/T, is_zone)
+	if(is_zone)
+		return !block_air_zones
+	return ..()
+*/
 /obj/machinery/door/proc/bumpopen(mob/user as mob)
 	if(operating)	return
 	if(user.last_airflow > world.time - vsc.airflow_delay) //Fakkit

code/game/objects/structures/inflatable.dm

@@ -25,6 +25,7 @@
 	density = 1
 	anchored = 1
 	opacity = 0
+	can_atmos_pass = ATMOS_PASS_DENSITY
 
 	icon = 'icons/obj/inflatable.dmi'
 	icon_state = "wall"
@@ -40,9 +41,6 @@
 	update_nearby_tiles()
 	return ..()
 
-/obj/structure/inflatable/CanPass(atom/movable/mover, turf/target, height=0, air_group=0)
-	return 0
-
 /obj/structure/inflatable/bullet_act(var/obj/item/projectile/Proj)
 	var/proj_damage = Proj.get_structure_damage()
 	if(!proj_damage) return
@@ -168,9 +166,7 @@
 /obj/structure/inflatable/door/attack_hand(mob/user as mob)
 	return TryToSwitchState(user)
 
-/obj/structure/inflatable/door/CanPass(atom/movable/mover, turf/target, height=0, air_group=0)
-	if(air_group)
-		return state
+/obj/structure/inflatable/door/CanPass(atom/movable/mover, turf/target)
 	if(istype(mover, /obj/effect/beam))
 		return !opacity
 	return !density

code/modules/blob2/blobs/base_blob.dm

@@ -47,20 +47,27 @@ var/list/blobs = list()
 		set_light(0)
 
 /obj/structure/blob/CanPass(atom/movable/mover, turf/target, height=0, air_group=0)
+	world << "/obj/structure/blob/CanPass(mover=[mover], target=[target], height=[height], air_group=[air_group]) called on [src]."
 	if(air_group || (height==0))
+		world << "Returned true due to being air group or having height=0"
 		return TRUE
 	if(istype(mover) && mover.checkpass(PASSBLOB))
+		world << "Returned true due to having PASSBLOB."
 		return TRUE
 	else if(istype(mover, /mob/living))
 		var/mob/living/L = mover
 		if(L.faction == "blob")
+			world << "Returned true due to being in blob faction."
 			return TRUE
 	else if(istype(mover, /obj/item/projectile))
 		var/obj/item/projectile/P = mover
 		if(P.firer && P.firer.faction == "blob")
+			world << "Returned true due to being a projectile fired by someone in blob faction."
 			return TRUE
+		world << "Returned false due to being a projectile, with firer not in faction."
 		return FALSE
 	else
+		world << "Returned false."
 		return FALSE
 //	return ..()
 

code/modules/mob/living/living_movement.dm

@@ -1,7 +1,4 @@
 /mob/CanPass(atom/movable/mover, turf/target, height, air_group)
-	if(air_group || (height == 0))
-		return TRUE
-
 	if(ismob(mover))
 		var/mob/moving_mob = mover
 		if ((other_mobs && moving_mob.other_mobs))
@@ -10,3 +7,6 @@
 		var/obj/item/projectile/P = mover
 		return !P.can_hit_target(src, P.permutated, src == P.original, TRUE)
 	return (!mover.density || !density || lying)
+
+/mob/CanZASPass(turf/T, is_zone)
+	return TRUE

polaris.dme

@@ -2629,7 +2629,7 @@
 #include "code\ZAS\Zone.dm"
 #include "interface\interface.dm"
 #include "interface\skin.dmf"
-#include "maps\southern_cross\southern_cross.dm"
+#include "maps\example\example.dm"
 #include "maps\submaps\space_submaps\space.dm"
 #include "maps\submaps\surface_submaps\mountains\mountains.dm"
 #include "maps\submaps\surface_submaps\mountains\mountains_areas.dm"