Bools and returns super-pr (#53221)

Replaces like 70-80% of 0 and such, as a side effect cleaned up a bunch of returns
Edit: Most left out ones are in mecha which should be done in mecha refactor already
Oh my look how clean it is

Co-authored-by: TiviPlus <TiviPlus>
Co-authored-by: Couls <coul422@gmail.com>

code/game/objects/structures/artstuff.dm

@@ -220,7 +220,7 @@
 	desc = "The perfect showcase for your favorite deathtrap memories."
 	icon = 'icons/obj/decals.dmi'
 	custom_materials = list(/datum/material/wood = 2000)
-	flags_1 = 0
+	flags_1 = NONE
 	icon_state = "frame-empty"
 	result_path = /obj/structure/sign/painting
 

code/game/objects/structures/beds_chairs/bed.dm

@@ -79,9 +79,9 @@
 	. = ..()
 	if(over_object == usr && Adjacent(usr))
 		if(!ishuman(usr) || !usr.canUseTopic(src, BE_CLOSE))
-			return 0
+			return FALSE
 		if(has_buckled_mobs())
-			return 0
+			return FALSE
 		usr.visible_message("<span class='notice'>[usr] collapses \the [src.name].</span>", "<span class='notice'>You collapse \the [src.name].</span>")
 		var/obj/structure/bed/roller/B = new foldabletype(get_turf(src))
 		usr.put_in_hands(B)

code/game/objects/structures/beds_chairs/chair.dm

@@ -325,8 +325,8 @@
 /obj/item/chair/hit_reaction(mob/living/carbon/human/owner, atom/movable/hitby, attack_text = "the attack", final_block_chance = 0, damage = 0, attack_type = MELEE_ATTACK)
 	if(attack_type == UNARMED_ATTACK && prob(hit_reaction_chance))
 		owner.visible_message("<span class='danger'>[owner] fends off [attack_text] with [src]!</span>")
-		return 1
-	return 0
+		return TRUE
+	return FALSE
 
 /obj/item/chair/afterattack(atom/target, mob/living/carbon/user, proximity)
 	. = ..()

code/game/objects/structures/crates_lockers/closets.dm

@@ -393,8 +393,8 @@
 /obj/structure/closet/Exit(atom/movable/AM)
 	open()
 	if(AM.loc == src)
-		return 0
-	return 1
+		return FALSE
+	return TRUE
 
 /obj/structure/closet/container_resist_act(mob/living/user)
 	if(opened)

code/game/objects/structures/crates_lockers/closets/bodybag.dm

@@ -18,7 +18,7 @@
 	drag_slowdown = 0
 	var/foldedbag_path = /obj/item/bodybag
 	var/obj/item/bodybag/foldedbag_instance = null
-	var/tagged = 0 // so closet code knows to put the tag overlay back
+	var/tagged = FALSE // so closet code knows to put the tag overlay back
 
 /obj/structure/closet/body_bag/Destroy()
 	// If we have a stored bag, and it's in nullspace (not in someone's hand), delete it.
@@ -38,7 +38,7 @@
 			return
 		if(t)
 			name = "body bag - [t]"
-			tagged = 1
+			tagged = TRUE
 			update_icon()
 		else
 			name = "body bag"
@@ -46,7 +46,7 @@
 	else if(I.tool_behaviour == TOOL_WIRECUTTER)
 		to_chat(user, "<span class='notice'>You cut the tag off [src].</span>")
 		name = "body bag"
-		tagged = 0
+		tagged = FALSE
 		update_icon()
 
 /obj/structure/closet/body_bag/update_overlays()

code/game/objects/structures/fireaxe.dm

@@ -45,7 +45,7 @@
 			return
 		to_chat(user, "<span class='notice'>You start fixing [src]...</span>")
 		if(do_after(user, 20, target = src) && G.use(2))
-			broken = 0
+			broken = FALSE
 			obj_integrity = max_integrity
 			update_icon()
 	else if(open || broken)
@@ -75,7 +75,7 @@
 		if(BURN)
 			playsound(src.loc, 'sound/items/welder.ogg', 100, TRUE)
 
-/obj/structure/fireaxecabinet/take_damage(damage_amount, damage_type = BRUTE, damage_flag = 0, sound_effect = 1, attack_dir)
+/obj/structure/fireaxecabinet/take_damage(damage_amount, damage_type = BRUTE, damage_flag = 0, sound_effect = TRUE, attack_dir)
 	if(open)
 		return
 	. = ..()

code/game/objects/structures/girders.dm

@@ -361,7 +361,7 @@
 		var/obj/item/stack/sheet/runed_metal/R = W
 		if(R.get_amount() < 1)
 			to_chat(user, "<span class='warning'>You need at least one sheet of runed metal to construct a runed wall!</span>")
-			return 0
+			return
 		user.visible_message("<span class='notice'>[user] begins laying runed metal on [src]...</span>", "<span class='notice'>You begin constructing a runed wall...</span>")
 		if(do_after(user, 50, target = src))
 			if(R.get_amount() < 1)
@@ -428,7 +428,7 @@
 		var/obj/item/stack/tile/bronze/B = W
 		if(B.get_amount() < 2)
 			to_chat(user, "<span class='warning'>You need at least two bronze sheets to build a bronze wall!</span>")
-			return 0
+			return
 		user.visible_message("<span class='notice'>[user] begins plating [src] with bronze...</span>", "<span class='notice'>You begin constructing a bronze wall...</span>")
 		if(do_after(user, 50, target = src))
 			if(B.get_amount() < 2)

code/game/objects/structures/guillotine.dm

@@ -21,7 +21,7 @@
 	anchored = TRUE
 	density = TRUE
 	max_buckled_mobs = 1
-	buckle_lying = FALSE
+	buckle_lying = 0
 	buckle_prevents_pull = TRUE
 	layer = ABOVE_MOB_LAYER
 	var/blade_status = GUILLOTINE_BLADE_RAISED

code/game/objects/structures/janicart.dm

@@ -23,13 +23,13 @@
 /obj/structure/janitorialcart/proc/wet_mop(obj/item/mop, mob/user)
 	if(reagents.total_volume < 1)
 		to_chat(user, "<span class='warning'>[src] is out of water!</span>")
-		return 0
+		return FALSE
 	else
 		var/obj/item/mop/M = mop
 		reagents.trans_to(mop, M.mopcap, transfered_by = user)
 		to_chat(user, "<span class='notice'>You wet [mop] in [src].</span>")
 		playsound(loc, 'sound/effects/slosh.ogg', 25, TRUE)
-		return 1
+		return TRUE
 
 /obj/structure/janitorialcart/proc/put_in_cart(obj/item/I, mob/user)
 	if(!user.transferItemToLoc(I, src))

code/game/objects/structures/petrified_statue.dm

@@ -77,28 +77,28 @@
 
 /mob/living/carbon/human/petrify(statue_timer)
 	if(!isturf(loc))
-		return 0
+		return FALSE
 	var/obj/structure/statue/petrified/S = new(loc, src, statue_timer)
 	S.name = "statue of [name]"
 	bleedsuppress = 1
 	S.copy_overlays(src)
 	var/newcolor = list(rgb(77,77,77), rgb(150,150,150), rgb(28,28,28), rgb(0,0,0))
 	S.add_atom_colour(newcolor, FIXED_COLOUR_PRIORITY)
-	return 1
+	return TRUE
 
 /mob/living/carbon/monkey/petrify(statue_timer)
 	if(!isturf(loc))
-		return 0
+		return FALSE
 	var/obj/structure/statue/petrified/S = new(loc, src, statue_timer)
 	S.name = "statue of a monkey"
 	S.icon_state = "monkey"
-	return 1
+	return TRUE
 
 /mob/living/simple_animal/pet/dog/corgi/petrify(statue_timer)
 	if(!isturf(loc))
-		return 0
+		return FALSE
 	var/obj/structure/statue/petrified/S = new (loc, src, statue_timer)
 	S.name = "statue of a corgi"
 	S.icon_state = "corgi"
 	S.desc = "If it takes forever, I will wait for you..."
-	return 1
+	return TRUE

code/game/objects/structures/statues.dm

@@ -227,7 +227,7 @@
 	material_drop_type = /obj/item/stack/sheet/mineral/bananium
 	impressiveness = 50
 	desc = "A bananium statue with a small engraving:'HOOOOOOONK'."
-	var/spam_flag = 0
+	var/limiting_spam = FALSE
 
 /obj/structure/statue/bananium/clown
 	name = "statue of a clown"
@@ -250,10 +250,10 @@
 	..()
 
 /obj/structure/statue/bananium/proc/honk()
-	if(!spam_flag)
-		spam_flag = TRUE
+	if(!limiting_spam)
+		limiting_spam = TRUE
 		playsound(src.loc, 'sound/items/bikehorn.ogg', 50, TRUE)
-		addtimer(VARSET_CALLBACK(src, spam_flag, FALSE), 2 SECONDS)
+		addtimer(VARSET_CALLBACK(src, limiting_spam, FALSE), 2 SECONDS)
 
 /////////////////////sandstone/////////////////////////////////////////
 

code/game/objects/structures/tables_racks.dm

@@ -536,7 +536,7 @@
 	canSmoothWith = null
 	can_buckle = 1
 	buckle_lying = -1
-	buckle_requires_restraints = 1
+	buckle_requires_restraints = TRUE
 	var/mob/living/carbon/human/patient = null
 	var/obj/machinery/computer/operating/computer = null
 

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

@@ -9,7 +9,7 @@
 	density = FALSE
 	layer = LOW_ITEM_LAYER //same as the built tube
 	anchored = FALSE
-	var/flipped = 0
+	var/flipped = FALSE
 	var/build_type = /obj/structure/transit_tube
 	var/flipped_build_type
 	var/base_icon
@@ -62,7 +62,7 @@
 
 /obj/structure/c_transit_tube/station/flipped
 	icon_state = "closed_station1"
-	flipped = 1
+	flipped = TRUE
 	build_type = /obj/structure/transit_tube/station/flipped
 	flipped_build_type = /obj/structure/transit_tube/station
 
@@ -77,7 +77,7 @@
 
 /obj/structure/c_transit_tube/station/reverse/flipped
 	icon_state = "closed_terminus1"
-	flipped = 1
+	flipped = TRUE
 	build_type = /obj/structure/transit_tube/station/reverse/flipped
 	flipped_build_type = /obj/structure/transit_tube/station/reverse
 
@@ -91,7 +91,7 @@
 
 /obj/structure/c_transit_tube/station/dispenser/flipped
 	icon_state = "closed_station1"
-	flipped = 1
+	flipped = TRUE
 	build_type = /obj/structure/transit_tube/station/dispenser/flipped
 	flipped_build_type = /obj/structure/transit_tube/station/dispenser
 
@@ -106,7 +106,7 @@
 
 /obj/structure/c_transit_tube/station/dispenser/reverse/flipped
 	icon_state = "closed_terminus1"
-	flipped = 1
+	flipped = TRUE
 	build_type = /obj/structure/transit_tube/station/dispenser/reverse/flipped
 	flipped_build_type = /obj/structure/transit_tube/station/dispenser/reverse
 
@@ -136,7 +136,7 @@
 	icon_state = "curved1"
 	build_type = /obj/structure/transit_tube/curved/flipped
 	flipped_build_type = /obj/structure/transit_tube/curved
-	flipped = 1
+	flipped = TRUE
 
 
 /obj/structure/c_transit_tube/junction
@@ -148,7 +148,7 @@
 
 /obj/structure/c_transit_tube/junction/flipped
 	icon_state = "junction1"
-	flipped = 1
+	flipped = TRUE
 	build_type = /obj/structure/transit_tube/junction/flipped
 	flipped_build_type = /obj/structure/transit_tube/junction
 

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

@@ -98,7 +98,7 @@
 		return ..()
 
 /obj/structure/transit_tube_pod/proc/follow_tube()
-	set waitfor = 0
+	set waitfor = FALSE
 	if(moving)
 		return
 

code/game/objects/structures/window.dm

@@ -99,9 +99,9 @@
 /obj/structure/window/CanAllowThrough(atom/movable/mover, turf/target)
 	. = ..()
 	if(istype(mover) && (mover.pass_flags & PASSGLASS))
-		return 1
+		return TRUE
 	if(dir == FULLTILE_WINDOW_DIR)
-		return 0	//full tile window, you can't move into it!
+		return FALSE	//full tile window, you can't move into it!
 	var/attempted_dir = get_dir(loc, target)
 	if(attempted_dir == dir)
 		return
@@ -120,10 +120,10 @@
 
 /obj/structure/window/CheckExit(atom/movable/O, turf/target)
 	if(istype(O) && (O.pass_flags & PASSGLASS))
-		return 1
+		return TRUE
 	if(get_dir(O.loc, target) == dir)
-		return 0
-	return 1
+		return FALSE
+	return TRUE
 
 /obj/structure/window/attack_tk(mob/user)
 	user.changeNext_move(CLICK_CD_MELEE)
@@ -227,8 +227,8 @@
 		if(get_dir(user,src) & dir)
 			for(var/obj/O in loc)
 				if(!O.CanPass(user, user.loc, 1))
-					return 0
-	return 1
+					return FALSE
+	return TRUE
 
 /obj/structure/window/take_damage(damage_amount, damage_type = BRUTE, damage_flag = 0, sound_effect = 1)
 	. = ..()
@@ -337,11 +337,11 @@
 
 /obj/structure/window/CanAStarPass(ID, to_dir)
 	if(!density)
-		return 1
+		return TRUE
 	if((dir == FULLTILE_WINDOW_DIR) || (dir == to_dir))
-		return 0
+		return FALSE
 
-	return 1
+	return TRUE
 
 /obj/structure/window/GetExplosionBlock()
 	return reinf && fulltile ? real_explosion_block : 0