Removes comparisons to true and false (#24083)

* Removes comparisons to true and false

* Update .github/CONTRIBUTING.md

Co-authored-by: Luc <89928798+lewcc@users.noreply.github.com>

---------

Co-authored-by: Luc <89928798+lewcc@users.noreply.github.com>

code/modules/admin/verbs/randomverbs.dm

@@ -869,7 +869,7 @@ Traitors and the like can also be revived with the previous role mostly intact.
 	if(SSshuttle.emergency.mode >= SHUTTLE_DOCKED)
 		return
 
-	if(SSshuttle.emergency.canRecall == FALSE)
+	if(!SSshuttle.emergency.canRecall)
 		if(alert("Shuttle is currently set to be nonrecallable. Recalling may break things. Respect Recall Status?", "Override Recall Status?", "Yes", "No") == "Yes")
 			return
 		else

code/modules/atmospherics/machinery/airalarm.dm

@@ -334,7 +334,7 @@
 			var/datum/gas_mixture/gas = location.remove_air(0.25 * environment.total_moles())
 			if(!gas)
 				return
-			if(!regulating_temperature && thermostat_state == TRUE)
+			if(!regulating_temperature && thermostat_state)
 				regulating_temperature = TRUE
 				visible_message("\The [src] clicks as it starts [environment.temperature > target_temperature ? "cooling" : "heating"] the room.", "You hear a click and a faint electronic hum.")
 
@@ -344,7 +344,7 @@
 			if(target_temperature < MIN_TEMPERATURE)
 				target_temperature = MIN_TEMPERATURE
 
-			if(thermostat_state == TRUE)
+			if(thermostat_state)
 				var/heat_capacity = gas.heat_capacity()
 				var/energy_used = max(abs(heat_capacity * (gas.temperature - target_temperature) ), MAX_ENERGY_CHANGE)
 

code/modules/library/library_computer.dm

@@ -474,7 +474,7 @@
 			return FALSE
 
 /obj/machinery/computer/library/proc/select_book(obj/item/book/B)
-	if(B.carved == TRUE)
+	if(B.carved)
 		return
 	user_data.selected_book.title = B.title ? B.title : "No Title"
 	user_data.selected_book.author = B.author ? B.author : "No Author"

code/modules/lighting/lighting_atom.dm

@@ -78,7 +78,7 @@
 	if(!isturf(T))
 		return
 
-	if(new_opacity == TRUE)
+	if(new_opacity)
 		T.has_opaque_atom = TRUE
 		T.reconsider_lights()
 	else

code/modules/mining/equipment/survival_pod.dm

@@ -41,7 +41,7 @@
 /obj/item/survivalcapsule/attack_self()
 	// Can't grab when capsule is New() because templates aren't loaded then
 	get_template()
-	if(used == FALSE)
+	if(!used)
 		loc.visible_message("<span class='warning'>[src] begins to shake. Stand back!</span>")
 		used = TRUE
 		sleep(50)

code/modules/mob/dead/observer/spells.dm

@@ -41,7 +41,7 @@ GLOBAL_LIST_INIT(boo_phrases, list(
 
 	if(target.get_spooked())
 		var/area/spook_zone = get_area(target)
-		if(spook_zone.is_haunted == TRUE)
+		if(spook_zone.is_haunted)
 			to_chat(usr, "<span class='notice'>The veil is weak in [spook_zone], it took less effort to influence [target].</span>")
 			cooldown_handler.start_recharge(cooldown_handler.recharge_duration / 2)
 		return

code/modules/mob/living/carbon/human/species/_species.dm

@@ -486,7 +486,7 @@
 	return
 
 /datum/species/proc/help(mob/living/carbon/human/user, mob/living/carbon/human/target, datum/martial_art/attacker_style)
-	if(attacker_style && attacker_style.help_act(user, target) == TRUE)//adminfu only...
+	if(attacker_style && attacker_style.help_act(user, target))//adminfu only...
 		return TRUE
 	if(target.on_fire)
 		user.pat_out(target)
@@ -500,7 +500,7 @@
 	if(target.check_block())
 		target.visible_message("<span class='warning'>[target] blocks [user]'s grab attempt!</span>")
 		return FALSE
-	if(attacker_style && attacker_style.grab_act(user, target) == TRUE)
+	if(attacker_style && attacker_style.grab_act(user, target))
 		return TRUE
 	else
 		target.grabbedby(user)
@@ -532,7 +532,7 @@
 		return FALSE
 	if(SEND_SIGNAL(target, COMSIG_HUMAN_ATTACKED, user) & COMPONENT_CANCEL_ATTACK_CHAIN)
 		return FALSE
-	if(attacker_style && attacker_style.harm_act(user, target) == TRUE)
+	if(attacker_style && attacker_style.harm_act(user, target))
 		return TRUE
 	else
 		var/datum/unarmed_attack/attack = user.dna.species.unarmed
@@ -587,7 +587,7 @@
 		user.do_attack_animation(target, ATTACK_EFFECT_DISARM)
 		playsound(target.loc, 'sound/weapons/punchmiss.ogg', 25, 1, -1)
 		return FALSE
-	if(attacker_style && attacker_style.disarm_act(user, target) == TRUE)
+	if(attacker_style && attacker_style.disarm_act(user, target))
 		return TRUE
 	user.do_attack_animation(target, ATTACK_EFFECT_DISARM)
 	if(target.move_resist > user.pull_force)

code/modules/mob/living/silicon/robot/drone/drone_manufacturer.dm

@@ -134,7 +134,7 @@
 		if(!G.check_ahud_rejoin_eligibility())
 			to_chat(usr, "<span class='warning'>Upon using the antagHUD you forfeited the ability to join the round.</span>")
 			return
-		if(G.started_as_observer == TRUE)
+		if(G.started_as_observer)
 			joinedasobserver = TRUE
 
 	var/deathtimeminutes = round(deathtime / 600)

code/modules/power/engines/supermatter/supermatter.dm

@@ -1212,7 +1212,7 @@
 	next_event_time = fake_time + world.time
 
 /obj/machinery/atmospherics/supermatter_crystal/proc/try_events()
-	if(has_been_powered == FALSE)
+	if(!has_been_powered)
 		return
 	if(!next_event_time) // for when the SM starts
 		make_next_event_time()

code/modules/power/gravitygenerator.dm

@@ -288,7 +288,7 @@ GLOBAL_LIST_EMPTY(gravity_generators)
 	change_power_mode(on ? ACTIVE_POWER_USE : IDLE_POWER_USE)
 
 	if(gravity) // If we turned on
-		if(generators_in_level() == FALSE) // And there's no gravity
+		if(generators_in_level() == 0) // And there's no other gravity generators on this z level
 			alert = TRUE
 			investigate_log("was brought online and is now producing gravity for this level.", "gravity")
 			message_admins("The gravity generator was brought online. (<A HREF='?_src_=holder;adminplayerobservecoodjump=1;X=[x];Y=[y];Z=[z]'>[src_area.name]</a>)")
@@ -297,7 +297,7 @@ GLOBAL_LIST_EMPTY(gravity_generators)
 					continue
 				A.gravitychange(TRUE, A)
 
-	else if(generators_in_level() == TRUE) // Turned off, and there is gravity
+	else if(generators_in_level() == 1) // Turned off, and there is only one gravity generator on the Z level
 		alert = TRUE
 		investigate_log("was brought offline and there is now no gravity for this level.", "gravity")
 		message_admins("The gravity generator was brought offline with no backup generator. (<A HREF='?_src_=holder;adminplayerobservecoodjump=1;X=[x];Y=[y];Z=[z]'>[src_area.name]</a>)")

code/modules/reagents/chemistry/reagents/medicine.dm

@@ -1485,7 +1485,7 @@
 					M.reagents.remove_reagent(R.id, 0.5) //We will be generous (for nukies really) and purge out the chemicals during this phase, so they don't fucking die during the next phase. Of course, if they try to use adrenals in the next phase, well...
 		if(20 to 43)
 			//If they have stimulants or stimulant drugs then just apply toxin damage instead.
-			if(has_stimulant == TRUE)
+			if(has_stimulant)
 				update_flags |= M.adjustToxLoss(10, FALSE)
 			else //apply debilitating effects
 				if(prob(75))
@@ -1496,7 +1496,7 @@
 			to_chat(M, "<span class='warning'>Your body goes rigid, you cannot move at all!</span>")
 			M.AdjustWeakened(15 SECONDS)
 		if(45 to INFINITY) // Start fixing bones | If they have stimulants or stimulant drugs in their system then the nanites won't work.
-			if(has_stimulant == TRUE)
+			if(has_stimulant)
 				return ..()
 			else
 				for(var/obj/item/organ/external/E in M.bodyparts)

code/modules/reagents/reagent_containers/glass_containers.dm

@@ -165,7 +165,7 @@
 
 	if(!is_open_container())
 		. += "lid_[initial(icon_state)]"
-		if(blocks_emissive == FALSE)
+		if(!blocks_emissive)
 			. += emissive_blocker(icon, "lid_[initial(icon_state)]")
 	if(assembly)
 		. += "assembly"

code/modules/recycling/disposal.dm

@@ -1446,9 +1446,9 @@
 /obj/structure/disposaloutlet/screwdriver_act(mob/living/user, obj/item/I)
 	add_fingerprint(user)
 
-	if(mode == FALSE)
+	if(!mode)
 		to_chat(user, "<span class='notice'>You remove the screws around the power connection.</span>")
-	else if(mode == TRUE)
+	else if(mode)
 		to_chat(user, "<span class='notice'>You attach the screws around the power connection.</span>")
 	I.play_tool_sound(src)
 	mode = !mode

code/modules/surgery/organs/augments_internal.dm

@@ -189,7 +189,7 @@
 	..()
 	if(crit_fail)
 		return
-	if(owner.stat == UNCONSCIOUS && cooldown == FALSE)
+	if(owner.stat == UNCONSCIOUS && !cooldown)
 		owner.AdjustSleeping(-200 SECONDS)
 		owner.AdjustParalysis(-200 SECONDS)
 		to_chat(owner, "<span class='notice'>You feel a rush of energy course through your body!</span>")

code/modules/surgery/organs/brain.dm

@@ -59,7 +59,7 @@
 		for(var/mob/dead/observer/G in GLOB.player_list)
 			if(G.mind == brainmob.mind)
 				foundghost = TRUE
-				if(G.can_reenter_corpse == FALSE)
+				if(!G.can_reenter_corpse)
 					foundghost = FALSE
 				break
 		if(foundghost)
@@ -129,7 +129,7 @@
 		owner.setBrainLoss(120)
 
 /obj/item/organ/internal/brain/on_life()
-	if(decoy_brain || damage < 10) 
+	if(decoy_brain || damage < 10)
 		return
 	switch(damage)
 		if(10 to 30)