[MIRROR] Implements usage of the REVERSE_DIR macro throughout the code. [MDB IGNORE] (#22743)

* Implements usage of the REVERSE_DIR macro throughout the code. (#77122)

## About The Pull Request
Replaces a ton of `turn(dir, 180)` calls with the aforementioned macro.

## Why It's Good For The Game
Afaik, `REVERSE_DIR` was coded to be faster than the classic `turn(dir,
180)` call, being a simple set of binary operations. To sum it up, micro
optimization.

## Changelog

N/A

* Implements usage of the REVERSE_DIR macro throughout the code.

---------

Co-authored-by: Ghom <42542238+Ghommie@users.noreply.github.com>

code/game/objects/items/extinguisher.dm

@@ -205,10 +205,10 @@
 
 		if(user.buckled && isobj(user.buckled) && !user.buckled.anchored)
 			var/obj/B = user.buckled
-			var/movementdirection = turn(direction,180)
+			var/movementdirection = REVERSE_DIR(direction)
 			addtimer(CALLBACK(src, TYPE_PROC_REF(/obj/item/extinguisher, move_chair), B, movementdirection), 1)
 		else
-			user.newtonian_move(turn(direction, 180))
+			user.newtonian_move(REVERSE_DIR(direction))
 
 		//Get all the turfs that can be shot at
 		var/turf/T = get_turf(target)

code/game/objects/items/rcd/RCL.dm

@@ -208,7 +208,7 @@
 					return //If we've run out, display message and exit
 			else
 				last = null
-		last = loaded.place_turf(get_turf(src), user, turn(user.dir, 180))
+		last = loaded.place_turf(get_turf(src), user, REVERSE_DIR(user.dir))
 		is_empty(user) //If we've run out, display message
 	update_appearance()
 

code/game/objects/items/weaponry.dm

@@ -785,7 +785,7 @@ for further reading, please see: https://github.com/tgstation/tgstation/pull/301
 		angle = 270
 	if(target.dir & turn(target_to_user, 270))
 		angle = 90
-	if(target.dir & turn(target_to_user, 180))
+	if(target.dir & REVERSE_DIR(target_to_user))
 		angle = 180
 	if(target.dir & target_to_user)
 		angle = 360

code/game/objects/obj_defense.dm

@@ -28,7 +28,7 @@
 	playsound(src, P.hitsound, 50, TRUE)
 	var/damage
 	if(!QDELETED(src)) //Bullet on_hit effect might have already destroyed this object
-		damage = take_damage(P.damage * P.demolition_mod, P.damage_type, P.armor_flag, 0, turn(P.dir, 180), P.armour_penetration)
+		damage = take_damage(P.damage * P.demolition_mod, P.damage_type, P.armor_flag, 0, REVERSE_DIR(P.dir), P.armour_penetration)
 	if(P.suppressed != SUPPRESSED_VERY)
 		visible_message(span_danger("[src] is hit by \a [P][damage ? "" : ", without leaving a mark"]!"), null, null, COMBAT_MESSAGE_RANGE)
 

code/game/objects/objs.dm

@@ -343,7 +343,7 @@ GLOBAL_LIST_EMPTY(objects_by_id_tag)
 /obj/handle_ricochet(obj/projectile/P)
 	. = ..()
 	if(. && receive_ricochet_damage_coeff)
-		take_damage(P.damage * receive_ricochet_damage_coeff, P.damage_type, P.armor_flag, 0, turn(P.dir, 180), P.armour_penetration) // pass along receive_ricochet_damage_coeff damage to the structure for the ricochet
+		take_damage(P.damage * receive_ricochet_damage_coeff, P.damage_type, P.armor_flag, 0, REVERSE_DIR(P.dir), P.armour_penetration) // pass along receive_ricochet_damage_coeff damage to the structure for the ricochet
 
 /// Handles exposing an object to reagents.
 /obj/expose_reagents(list/reagents, datum/reagents/source, methods=TOUCH, volume_modifier=1, show_message=TRUE)

code/game/objects/structures/bedsheet_bin.dm

@@ -140,7 +140,7 @@ LINEN BINS
 	// double check the canUseTopic args to make sure it's correct
 	if(!istype(user) || !user.can_perform_action(src, NEED_DEXTERITY))
 		return
-	dir = turn(dir, 180)
+	dir = REVERSE_DIR(dir)
 
 /obj/item/bedsheet/blue
 	icon_state = "sheetblue"

code/game/objects/structures/fireplace.dm

@@ -34,7 +34,7 @@
 /// We're offset back into the wall, account for that
 /obj/structure/fireplace/get_light_offset()
 	var/list/hand_back = ..()
-	var/list/dir_offset = dir2offset(turn(dir, 180))
+	var/list/dir_offset = dir2offset(REVERSE_DIR(dir))
 	hand_back[1] += dir_offset[1] * 0.5
 	hand_back[2] += dir_offset[2] * 0.5
 	return hand_back

code/game/objects/structures/transit_tubes/station.dm

@@ -182,7 +182,7 @@
 			tube_dirs = list(NORTH, SOUTH)
 		if(WEST)
 			tube_dirs = list(NORTH, SOUTH)
-	boarding_dir = turn(dir, 180)
+	boarding_dir = REVERSE_DIR(dir)
 
 
 /obj/structure/transit_tube/station/flipped
@@ -212,7 +212,7 @@
 			tube_dirs = list(SOUTH)
 		if(WEST)
 			tube_dirs = list(NORTH)
-	boarding_dir = turn(dir, 180)
+	boarding_dir = REVERSE_DIR(dir)
 
 /obj/structure/transit_tube/station/reverse/flipped
 	icon_state = "closed_terminus1"
@@ -291,7 +291,7 @@
 			tube_dirs = list(SOUTH)
 		if(WEST)
 			tube_dirs = list(NORTH)
-	boarding_dir = turn(dir, 180)
+	boarding_dir = REVERSE_DIR(dir)
 
 /obj/structure/transit_tube/station/dispenser/reverse/flipped
 	icon_state = "open_terminusdispenser1"

code/game/objects/structures/transit_tubes/transit_tube.dm

@@ -61,7 +61,7 @@
 
 
 /obj/structure/transit_tube/proc/has_entrance(from_dir)
-	from_dir = turn(from_dir, 180)
+	from_dir = REVERSE_DIR(from_dir)
 
 	for(var/direction in tube_dirs)
 		if(direction == from_dir)

code/game/objects/structures/transit_tubes/transit_tube_pod.dm

@@ -154,7 +154,7 @@
 
 	var/obj/structure/transit_tube/TT = locate(/obj/structure/transit_tube) in loc
 	//landed on a turf without transit tube or not in our direction
-	if(!TT || (!(dir in TT.tube_dirs) && !(turn(dir,180) in TT.tube_dirs)))
+	if(!TT || (!(dir in TT.tube_dirs) && !(REVERSE_DIR(dir) in TT.tube_dirs)))
 		outside_tube()
 
 /obj/structure/transit_tube_pod/proc/outside_tube()
@@ -187,7 +187,7 @@
 	for(var/obj/structure/transit_tube/station/station in loc)
 		if(station.pod_moving)
 			return
-		if(direction == turn(station.boarding_dir,180))
+		if(direction == REVERSE_DIR(station.boarding_dir))
 			if(station.open_status == STATION_TUBE_OPEN)
 				user.forceMove(loc)
 				update_appearance()