[s] Blocks any doubled wall mount placement (#27016)

* Blocks any doubled wall mount placement

* Fixes direction stuff

* Remove old code

code/__HELPERS/unsorted.dm

@@ -1141,41 +1141,23 @@ Checks if that loc and dir has a item on the wall
 */
 GLOBAL_LIST_INIT(wall_items, typecacheof(list(/obj/machinery/power/apc, /obj/machinery/alarm,
 	/obj/item/radio/intercom, /obj/structure/extinguisher_cabinet, /obj/structure/reagent_dispensers/peppertank,
-	/obj/machinery/status_display, /obj/machinery/requests_console, /obj/machinery/light_switch, /obj/structure/sign,
+	/obj/machinery/status_display, /obj/machinery/requests_console, /obj/structure/sign,
 	/obj/machinery/newscaster, /obj/machinery/firealarm, /obj/structure/noticeboard, /obj/machinery/door_control,
 	/obj/machinery/computer/security/telescreen, /obj/machinery/airlock_controller,
 	/obj/item/storage/secure/safe, /obj/machinery/door_timer, /obj/machinery/flasher, /obj/machinery/keycard_auth,
 	/obj/structure/mirror, /obj/structure/closet/fireaxecabinet, /obj/machinery/computer/security/telescreen/entertainment,
-	/obj/structure/sign, /obj/machinery/barsign)))
+	/obj/structure/sign, /obj/machinery/barsign, /obj/machinery/light, /obj/machinery/light_construct)))
 
 /proc/gotwallitem(loc, dir)
 	for(var/obj/O in loc)
-		if(is_type_in_typecache(O, GLOB.wall_items))
-			//Direction works sometimes
-			if(O.dir == dir)
-				return 1
+		if(is_type_in_typecache(O, GLOB.wall_items) && dir == O.dir)
+			return TRUE
 
-			//Some stuff doesn't use dir properly, so we need to check pixel instead
-			switch(dir)
-				if(SOUTH)
-					if(O.pixel_y > 10)
-						return 1
-				if(NORTH)
-					if(O.pixel_y < -10)
-						return 1
-				if(WEST)
-					if(O.pixel_x > 10)
-						return 1
-				if(EAST)
-					if(O.pixel_x < -10)
-						return 1
-
-	//Some stuff is placed directly on the wallturf (signs)
+	// Some stuff is placed directly on the wallturf (signs)
 	for(var/obj/O in get_step(loc, dir))
 		if(is_type_in_typecache(O, GLOB.wall_items))
-			if(abs(O.pixel_x) <= 10 && abs(O.pixel_y) <= 10)
-				return 1
-	return 0
+			return TRUE
+	return FALSE
 
 /proc/atan2(x, y)
 	if(!x && !y) return 0

code/game/objects/items/mountable_frames/frames.dm

@@ -22,15 +22,15 @@
 
 /obj/item/mounted/frame/try_build(turf/on_wall, mob/user)
 	if(!..())
-		return
+		return FALSE
 
 	var/turf/build_turf = get_turf(user)
 	if((mount_requirements & MOUNTED_FRAME_SIMFLOOR) && !isfloorturf(build_turf))
 		to_chat(user, "<span class='warning'>[src] cannot be placed on this spot.</span>")
-		return
+		return FALSE
 	if(mount_requirements & MOUNTED_FRAME_NOSPACE)
 		var/area/my_area = get_area(build_turf)
 		if(!istype(my_area) || !my_area.requires_power || isspacearea(my_area))
 			to_chat(user, "<span class='warning'>[src] cannot be placed in this area.</span>")
-			return
+			return FALSE
 	return TRUE

code/game/objects/items/mountable_frames/mountables.dm

@@ -14,17 +14,18 @@
 
 /obj/item/mounted/proc/try_build(turf/on_wall, mob/user, proximity_flag) //checks
 	if(!on_wall || !user)
-		return
+		return FALSE
 	if(!proximity_flag) //if we aren't next to the turf
-		return
+		return FALSE
+
 	if(!allow_floor_mounting)
 		if(!(get_dir(on_wall, user) in GLOB.cardinal))
 			to_chat(user, "<span class='warning'>You need to be standing next to [on_wall] to place [src].</span>")
-			return
+			return FALSE
 
-		if(gotwallitem(get_turf(user), get_dir(on_wall, user)))
+		if(gotwallitem(get_turf(user), get_dir(user, on_wall)))
 			to_chat(user, "<span class='warning'>There's already an item on this wall!</span>")
-			return
+			return FALSE
 
 	return TRUE