Merge pull request #11769 from Couls/unrestricted-airlocks

One-way Airlocks!

code/game/machinery/doors/airlock.dm

@@ -311,6 +311,7 @@ About the new airlock wires panel:
 /obj/machinery/door/airlock/update_icon(state=0, override=0)
 	if(operating && !override)
 		return
+	check_unres()
 	icon_state = density ? "closed" : "open"
 	switch(state)
 		if(0)
@@ -333,7 +334,6 @@ About the new airlock wires panel:
 	var/image/sparks_overlay
 	var/image/note_overlay
 	var/notetype = note_type()
-
 	switch(state)
 		if(AIRLOCK_CLOSED)
 			frame_overlay = get_airlock_overlay("closed", icon)
@@ -621,6 +621,31 @@ About the new airlock wires panel:
 		if(user)
 			attack_ai(user)
 
+/obj/machinery/door/airlock/proc/check_unres() //unrestricted sides. This overlay indicates which directions the player can access even without an ID
+	if(hasPower() && unres_sides)
+		if(unres_sides & NORTH)
+			var/image/I = image(icon='icons/obj/doors/airlocks/station/overlays.dmi', icon_state="unres_n") //layer=src.layer+1
+			I.pixel_y = 32
+			set_light(l_range = 1, l_power = 1, l_color = "#00FF00")
+			add_overlay(I)
+		if(unres_sides & SOUTH)
+			var/image/I = image(icon='icons/obj/doors/airlocks/station/overlays.dmi', icon_state="unres_s") //layer=src.layer+1
+			I.pixel_y = -32
+			set_light(l_range = 1, l_power = 1, l_color = "#00FF00")
+			add_overlay(I)
+		if(unres_sides & EAST)
+			var/image/I = image(icon='icons/obj/doors/airlocks/station/overlays.dmi', icon_state="unres_e") //layer=src.layer+1
+			I.pixel_x = 32
+			set_light(l_range = 1, l_power = 1, l_color = "#00FF00")
+			add_overlay(I)
+		if(unres_sides & WEST)
+			var/image/I = image(icon='icons/obj/doors/airlocks/station/overlays.dmi', icon_state="unres_w") //layer=src.layer+1
+			I.pixel_x = -32
+			set_light(l_range = 1, l_power = 1, l_color = "#00FF00")
+			add_overlay(I)
+	else
+		set_light(0)
+		
 /obj/machinery/door/airlock/CanPass(atom/movable/mover, turf/target, height=0)
 	if(isElectrified() && density && istype(mover, /obj/item))
 		var/obj/item/I = mover

code/game/machinery/doors/airlock_electronics.dm

@@ -11,6 +11,8 @@
 	var/list/conf_access = null
 	var/one_access = 0 //if set to 1, door would receive req_one_access instead of req_access
 	var/const/max_brain_damage = 60 // Maximum brain damage a mob can have until it can't use the electronics
+	var/unres_sides = 0
+	var/unres_direction = null
 
 /obj/item/airlock_electronics/attack_self(mob/user)
 	if(!ishuman(user) && !isrobot(user))
@@ -23,14 +25,22 @@
 			return
 
 	var/t1 = text("<B>Access control</B><br>\n")
+	t1 += "<hr>"
+	t1 += "<B> Unrestricted Access Settings</B><br>"
 
+	var/list/Directions = list("North","South",,"East",,,,"West")
+	for(var/direction in cardinal)
+		if (unres_direction && unres_direction == direction)
+			t1 += "<a style='color: red' href='?src=[UID()];unres_direction=[direction]'>[Directions[direction]]</a><br>"
+		else
+			t1 += "<a href='?src=[UID()];unres_direction=[direction]'>[Directions[direction]]</a><br>"
+	
+	t1 += "<hr>"
 	t1 += "Access requirement is set to "
 	t1 += one_access ? "<a style='color: green' href='?src=[UID()];one_access=1'>ONE</a><hr>" : "<a style='color: red' href='?src=[UID()];one_access=1'>ALL</a><hr>"
 
 	t1 += conf_access == null ? "<font color=red>All</font><br>" : "<a href='?src=[UID()];access=all'>All</a><br>"
 
-	t1 += "<br>"
-
 	var/list/accesses = get_all_accesses()
 	for(var/acc in accesses)
 		var/aname = get_access_desc(acc)
@@ -64,6 +74,14 @@
 
 	if(href_list["access"])
 		toggle_access(href_list["access"])
+	
+	if(href_list["unres_direction"])
+		unres_direction = text2num(href_list["unres_direction"])
+		if (unres_sides == unres_direction)
+			unres_sides = 0
+			unres_direction = null
+		else
+			unres_sides = unres_direction
 
 	attack_self(usr)
 

code/game/machinery/doors/door.dm

@@ -28,7 +28,7 @@
 	var/real_explosion_block	//ignore this, just use explosion_block
 	var/heat_proof = FALSE // For rglass-windowed airlocks and firedoors
 	var/emergency = FALSE
-
+	var/unres_sides = 0 //Unrestricted sides. A bitflag for which direction (if any) can open the door with no access
 	//Multi-tile doors
 	var/width = 1
 
@@ -55,6 +55,10 @@
 	..()
 	update_dir()
 
+/obj/machinery/door/power_change()
+	..()
+	update_icon()
+
 /obj/machinery/door/proc/update_dir()
 	if(width > 1)
 		if(dir in list(EAST, WEST))
@@ -175,10 +179,15 @@
 /obj/machinery/door/allowed(mob/M)
 	if(emergency)
 		return TRUE
+	if(unrestricted_side(M))
+		return TRUE
 	if(!requiresID())
 		return FALSE // Intentional. machinery/door/requiresID() always == 1. airlocks, however, == 0 if ID scan is disabled. Yes, this var is poorly named.
 	return ..()
 
+/obj/machinery/door/proc/unrestricted_side(mob/M) //Allows for specific side of airlocks to be unrestrected (IE, can exit maint freely, but need access to enter)
+	return get_dir(src, M) & unres_sides
+	
 /obj/machinery/door/proc/try_to_weld(obj/item/weldingtool/W, mob/user)
 	return
 

code/game/objects/effects/mapping_helpers.dm

@@ -67,6 +67,23 @@
 /obj/effect/mapping_helpers/no_lava
 	icon_state = "no_lava"
 
+/obj/effect/mapping_helpers/airlock
+	layer = DOOR_HELPER_LAYER
+
+/obj/effect/mapping_helpers/airlock/unres
+	name = "airlock unresctricted side helper"
+	icon_state = "airlock_unres_helper"
+
+/obj/effect/mapping_helpers/airlock/unres/Initialize(mapload)
+	if(!mapload)
+		log_world("### MAP WARNING, [src] spawned outside of mapload!")
+		return
+	var/obj/machinery/door/airlock/airlock = locate(/obj/machinery/door/airlock) in src.loc
+	if(airlock)
+		airlock.unres_sides ^= dir
+	else
+		log_world("### MAP WARNING, [src] failed to find an airlock at [AREACOORD(src)]")
+	..()	
 /obj/effect/mapping_helpers/no_lava/New()
 	var/turf/T = get_turf(src)
 	T.flags |= NO_LAVA_GEN

code/game/objects/structures/door_assembly.dm

@@ -226,6 +226,7 @@
 					door = new airlock_type(loc)
 				door.setDir(dir)
 				door.electronics = electronics
+				door.unres_sides = electronics.unres_sides
 				door.heat_proof = heat_proof_finished
 				if(electronics.one_access)
 					door.req_access = null