Everything else through the door (#19358)

code/__HELPERS/AnimationLibrary.dm

@@ -5,7 +5,7 @@
  */
 
 /proc/animate_fade_grayscale(atom/A, time = 5)
-	if(!istype(A) && !istype(A, /client))
+	if(!istype(A) && !isclient(A))
 		return
 	A.color = null
 	animate(A, color = MATRIX_GREYSCALE, time = time, easing = SINE_EASING)

code/__HELPERS/game.dm

@@ -162,7 +162,7 @@
 			L |= M
 			//log_world("[recursion_limit] = [M] - [get_turf(M)] - ([M.x], [M.y], [M.z])")
 
-		else if(include_radio && istype(A, /obj/item/radio))
+		else if(include_radio && isradio(A))
 			if(sight_check && !isInSight(A, O))
 				continue
 			L |= A
@@ -191,7 +191,7 @@
 			if(M.client || include_clientless)
 				hear += M
 			//log_world("Start = [M] - [get_turf(M)] - ([M.x], [M.y], [M.z])")
-		else if(istype(A, /obj/item/radio))
+		else if(isradio(A))
 			hear += A
 
 		if(isobj(A) || ismob(A))

code/__HELPERS/unsorted.dm

@@ -803,7 +803,7 @@ Returns 1 if the chain up to the area contains the given typepath
 							X.name = "wall"
 							qdel(O) // prevents multiple shuttle corners from stacking
 							continue
-						if(!istype(O,/obj)) continue
+						if(!isobj(O)) continue
 						O.loc.Exited(O)
 						O.setLoc(X,teleported=1)
 						O.loc.Entered(O)
@@ -944,7 +944,7 @@ Returns 1 if the chain up to the area contains the given typepath
 
 					for(var/obj/O in T)
 
-						if(!istype(O,/obj))
+						if(!isobj(O))
 							continue
 
 						objs += O
@@ -1437,7 +1437,7 @@ GLOBAL_DATUM_INIT(dview_mob, /mob/dview, new)
 	if(istype(A, /datum))
 		var/datum/D = A
 		return !QDELETED(D)
-	if(istype(A, /client))
+	if(isclient(A))
 		return TRUE
 	return FALSE
 

code/_onclick/adjacent.dm

@@ -74,7 +74,7 @@
 // This is necessary for storage items not on your person.
 /obj/item/Adjacent(atom/neighbor, recurse = 1)
 	if(neighbor == loc) return 1
-	if(istype(loc,/obj/item))
+	if(isitem(loc))
 		if(recurse > 0)
 			return loc.Adjacent(neighbor,recurse - 1)
 		return 0

code/_onclick/click.dm

@@ -112,7 +112,7 @@
 	if(!modifiers["catcher"] && A.IsObscured())
 		return
 
-	if(istype(loc,/obj/mecha))
+	if(ismecha(loc))
 		if(!locate(/turf) in list(A,A.loc)) // Prevents inventory from being drilled
 			return
 		var/obj/mecha/M = loc

code/_onclick/hud/alien.dm

@@ -6,7 +6,7 @@
 	icon_state = "leap_off"
 
 /obj/screen/alien/leap/Click()
-	if(istype(usr, /mob/living/carbon/alien/humanoid))
+	if(isalienadult(usr))
 		var/mob/living/carbon/alien/humanoid/hunter/AH = usr
 		AH.toggle_leap()
 
@@ -53,7 +53,7 @@
 	static_inventory += using
 	move_intent = using
 
-	if(istype(mymob, /mob/living/carbon/alien/humanoid/hunter))
+	if(isalienhunter(mymob))
 		mymob.leap_icon = new /obj/screen/alien/leap()
 		mymob.leap_icon.icon = 'icons/mob/screen_alien.dmi'
 		mymob.leap_icon.screen_loc = ui_alien_storage_r

code/_onclick/hud/human.dm

@@ -20,7 +20,7 @@
 	icon_state = "act_equip"
 
 /obj/screen/human/equip/Click()
-	if(istype(usr.loc,/obj/mecha)) // stops inventory actions in a mech
+	if(ismecha(usr.loc)) // stops inventory actions in a mech
 		return 1
 	var/mob/living/carbon/human/H = usr
 	H.quick_equip()

code/_onclick/hud/screen_objects.dm

@@ -155,7 +155,7 @@
 		return TRUE
 	if(usr.incapacitated(ignore_restraints = TRUE))
 		return TRUE
-	if(istype(usr.loc,/obj/mecha)) // stops inventory actions in a mech
+	if(ismecha(usr.loc)) // stops inventory actions in a mech
 		return TRUE
 	if(master)
 		var/obj/item/I = usr.get_active_hand()
@@ -410,7 +410,7 @@
 		return 1
 	if(usr.incapacitated())
 		return 1
-	if(istype(usr.loc,/obj/mecha)) // stops inventory actions in a mech
+	if(ismecha(usr.loc)) // stops inventory actions in a mech
 		return 1
 
 	if(hud?.mymob && slot_id)
@@ -453,7 +453,7 @@
 		return 1
 	if(usr.incapacitated())
 		return 1
-	if(istype(usr.loc,/obj/mecha)) // stops inventory actions in a mech
+	if(ismecha(usr.loc)) // stops inventory actions in a mech
 		return 1
 
 	if(ismob(usr))

code/_onclick/telekinesis.dm

@@ -132,7 +132,7 @@
 		return // todo: something like attack_self not laden with assumptions inherent to attack_self
 
 
-	if(istype(focus,/obj/item) && target.Adjacent(focus) && !user.in_throw_mode)
+	if(isitem(focus) && target.Adjacent(focus) && !user.in_throw_mode)
 		var/obj/item/I = focus
 		var/resolved = target.attackby(I, user, params)
 		if(!resolved && target && I)
@@ -159,7 +159,7 @@
 		return I == focus
 
 /obj/item/tk_grab/proc/focus_object(obj/target, mob/user)
-	if(!istype(target,/obj))
+	if(!isobj(target))
 		return//Cant throw non objects atm might let it do mobs later
 	if(target.anchored || !isturf(target.loc))
 		qdel(src)

code/controllers/subsystem/overlays.dm

@@ -92,7 +92,7 @@ SUBSYSTEM_DEF(overlays)
 		else if(isicon(overlay))
 			new_overlays += icon2appearance(overlay)
 		else
-			if(isloc(overlay))
+			if(isatom(overlay))
 				var/atom/A = overlay
 				if(A.flags_2 & OVERLAY_QUEUED_2)
 					COMPILE_OVERLAYS(A)

code/controllers/subsystem/parallax.dm

@@ -39,7 +39,7 @@ SUBSYSTEM_DEF(parallax)
 		var/atom/movable/A = C.eye
 		if(!istype(A))
 			continue
-		for (A; isloc(A.loc) && !isturf(A.loc); A = A.loc);
+		for (A; isatom(A.loc) && !isturf(A.loc); A = A.loc);
 
 		if(A != C.movingmob)
 			if(C.movingmob != null && C.movingmob.client_mobs_in_contents)

code/datums/datumvars.dm

@@ -490,7 +490,7 @@
 		var/datum/D = value
 		item = "<a href='?_src_=vars;Vars=[D.UID()]'>[VV_HTML_ENCODE(name)] \ref[value]</a> = [D.type]"
 
-	else if(istype(value, /client))
+	else if(isclient(value))
 		var/client/C = value
 		item = "<a href='?_src_=vars;Vars=[C.UID()]'>[VV_HTML_ENCODE(name)] \ref[value]</a> = [C] [C.type]"
 //
@@ -569,7 +569,7 @@
 		if(!check_rights(R_VAREDIT))	return
 
 		var/D = locateUID(href_list["datumedit"])
-		if(!istype(D,/datum) && !istype(D,/client))
+		if(!istype(D,/datum) && !isclient(D))
 			to_chat(usr, "This can only be used on instances of types /client or /datum")
 			return
 
@@ -579,7 +579,7 @@
 		if(!check_rights(R_VAREDIT))	return
 
 		var/atom/D = locateUID(href_list["subject"])
-		if(!istype(D,/datum) && !istype(D,/client))
+		if(!istype(D,/datum) && !isclient(D))
 			to_chat(usr, "This can only be used on instances of types /client or /datum")
 			return
 		if(!(href_list["var"] in D.vars))
@@ -594,7 +594,7 @@
 		if(!check_rights(R_VAREDIT))	return
 
 		var/D = locateUID(href_list["datumchange"])
-		if(!istype(D,/datum) && !istype(D,/client))
+		if(!istype(D,/datum) && !isclient(D))
 			to_chat(usr, "This can only be used on instances of types /client or /datum")
 			return
 

code/datums/diseases/_MobProcs.dm

@@ -86,7 +86,7 @@
 
 	var/target_zone = pick(head_ch;1,body_ch;2,hands_ch;3,feet_ch;4)
 
-	if(istype(src, /mob/living/carbon/human))
+	if(ishuman(src))
 		var/mob/living/carbon/human/H = src
 
 		switch(target_zone)

code/datums/diseases/advance/symptoms/beard.dm

@@ -28,7 +28,7 @@ BONUS
 	..()
 	if(prob(SYMPTOM_ACTIVATION_PROB))
 		var/mob/living/M = A.affected_mob
-		if(istype(M, /mob/living/carbon/human))
+		if(ishuman(M))
 			var/mob/living/carbon/human/H = M
 			var/obj/item/organ/external/head/head_organ = H.get_organ("head")
 			switch(A.stage)

code/datums/diseases/advance/symptoms/damage_converter.dm

@@ -37,7 +37,7 @@ Bonus
 
 	var/get_damage = rand(1, 2)
 
-	if(istype(M, /mob/living/carbon/human))
+	if(ishuman(M))
 		var/mob/living/carbon/human/H = M
 
 		var/list/parts = H.get_damaged_organs(TRUE, TRUE, AFFECT_ORGANIC_ORGAN) //1,1 because it needs inputs.

code/datums/diseases/advance/symptoms/shedding.dm

@@ -29,7 +29,7 @@ BONUS
 	if(prob(SYMPTOM_ACTIVATION_PROB))
 		var/mob/living/M = A.affected_mob
 		to_chat(M, "<span class='warning'>[pick("Your scalp itches.", "Your skin feels flakey.")]</span>")
-		if(istype(M, /mob/living/carbon/human))
+		if(ishuman(M))
 			var/mob/living/carbon/human/H = M
 			if(NO_HAIR in H.dna.species.species_traits)
 				return // Hair can't fall out if you don't have any

code/datums/diseases/advance/symptoms/skin.dm

@@ -28,7 +28,7 @@ BONUS
 	..()
 	if(prob(SYMPTOM_ACTIVATION_PROB))
 		var/mob/living/M = A.affected_mob
-		if(istype(M, /mob/living/carbon/human))
+		if(ishuman(M))
 			var/mob/living/carbon/human/H = M
 			if(H.s_tone == -85)
 				return
@@ -72,7 +72,7 @@ BONUS
 	..()
 	if(prob(SYMPTOM_ACTIVATION_PROB))
 		var/mob/living/M = A.affected_mob
-		if(istype(M, /mob/living/carbon/human))
+		if(ishuman(M))
 			var/mob/living/carbon/human/H = M
 			if(H.s_tone == 85)
 				return

code/datums/diseases/advance/symptoms/youth.dm

@@ -28,7 +28,7 @@ BONUS
 	..()
 	if(prob(SYMPTOM_ACTIVATION_PROB * 2))
 		var/mob/living/M = A.affected_mob
-		if(istype(M, /mob/living/carbon/human))
+		if(ishuman(M))
 			var/mob/living/carbon/human/H = M
 			switch(A.stage)
 				if(1)

code/datums/diseases/wizarditis.dm

@@ -55,7 +55,7 @@ STI KALY - blind
 
 
 /datum/disease/wizarditis/proc/spawn_wizard_clothes(chance = 0)
-	if(istype(affected_mob, /mob/living/carbon/human))
+	if(ishuman(affected_mob))
 		var/mob/living/carbon/human/H = affected_mob
 		if(prob(chance) && !isplasmaman(H))
 			if(!istype(H.head, /obj/item/clothing/head/wizard))

code/datums/mind.dm

@@ -608,7 +608,7 @@
 				var/list/possible_targets = list()
 				var/list/possible_targets_random = list()
 				for(var/datum/mind/possible_target in SSticker.minds)
-					if((possible_target != src) && istype(possible_target.current, /mob/living/carbon/human))
+					if((possible_target != src) && ishuman(possible_target.current))
 						possible_targets += possible_target.current // Allows for admins to pick off station roles
 						if(!is_invalid_target(possible_target))
 							possible_targets_random += possible_target.current // For random picking, only valid targets

code/datums/spell.dm

@@ -375,7 +375,7 @@ GLOBAL_LIST_INIT(spells, typesof(/obj/effect/proc_holder/spell))
 	if(overlay)
 		for(var/atom/target in targets)
 			var/location
-			if(istype(target,/mob/living))
+			if(isliving(target))
 				location = target.loc
 			else if(istype(target,/turf))
 				location = target
@@ -393,11 +393,11 @@ GLOBAL_LIST_INIT(spells, typesof(/obj/effect/proc_holder/spell))
 	SHOULD_CALL_PARENT(TRUE)
 	for(var/atom/target in targets)
 		var/location
-		if(istype(target,/mob/living))
+		if(isliving(target))
 			location = target.loc
 		else if(istype(target,/turf))
 			location = target
-		if(istype(target,/mob/living) && message)
+		if(isliving(target) && message)
 			to_chat(target, text("[message]"))
 		if(sparks_spread)
 			do_sparks(sparks_amt, 0, location)

code/datums/spells/turf_teleport.dm

@@ -25,7 +25,7 @@
 		var/list/turfs = new/list()
 		for(var/turf/T in range(target,outer_tele_radius))
 			if(T in range(target,inner_tele_radius)) continue
-			if(istype(T,/turf/space) && !include_space) continue
+			if(isspaceturf(T) && !include_space) continue
 			if(T.density && !include_dense) continue
 			if(T.x>world.maxx-outer_tele_radius || T.x<outer_tele_radius)	continue	//putting them at the edge is dumb
 			if(T.y>world.maxy-outer_tele_radius || T.y<outer_tele_radius)	continue

code/datums/uplink_item.dm

@@ -110,7 +110,7 @@ GLOBAL_LIST_INIT(uplink_items, subtypesof(/datum/uplink_item))
 	if(user.stat || user.restrained())
 		return FALSE
 
-	if(!(istype(user, /mob/living/carbon/human)))
+	if(!(ishuman(user)))
 		return FALSE
 
 	// If the uplink's holder is in the user's contents

code/defines/procs/admin.dm

@@ -15,7 +15,7 @@
 
 	if(!whom)
 		return "INVALID/(INVALID)"
-	if(istype(whom, /client))
+	if(isclient(whom))
 		C = whom
 		M = C.mob
 		key = C.key

code/game/area/areas.dm

@@ -504,7 +504,7 @@
 
 		M.lastarea = src
 
-	if(!istype(A,/mob/living))	return
+	if(!isliving(A))	return
 
 	var/mob/living/L = A
 	if(!L.ckey)	return
@@ -526,7 +526,7 @@
 			thunk(M)
 
 /area/proc/thunk(mob/living/carbon/human/M)
-	if(istype(M,/mob/living/carbon/human/))  // Only humans can wear magboots, so we give them a chance to.
+	if(ishuman(M))  // Only humans can wear magboots, so we give them a chance to.
 		if(istype(M.shoes, /obj/item/clothing/shoes/magboots) && (M.shoes.flags & NOSLIP))
 			return
 
@@ -539,10 +539,10 @@
 	if(isspaceturf(get_turf(M))) // Can't fall onto nothing.
 		return
 
-	if((istype(M,/mob/living/carbon/human/)) && (M.m_intent == MOVE_INTENT_RUN))
+	if((ishuman(M)) && (M.m_intent == MOVE_INTENT_RUN))
 		M.Weaken(10 SECONDS)
 
-	else if(istype(M,/mob/living/carbon/human/))
+	else if(ishuman(M))
 		M.Weaken(4 SECONDS)
 
 

code/game/dna/dna2_helpers.dm

@@ -128,7 +128,7 @@
 
 // Simpler. Don't specify UI in order for the mob to use its own.
 /mob/proc/UpdateAppearance(list/UI = null)
-	if(istype(src, /mob/living/carbon/human)) // WHY?!
+	if(ishuman(src)) // WHY?!
 		if(UI!=null)
 			dna.UI = UI
 			dna.UpdateUI()

code/game/dna/mutations/powers.dm

@@ -532,7 +532,7 @@
 
 		user.layer = prevLayer
 
-	if(istype(user.loc,/obj/))
+	if(isobj(user.loc))
 		var/obj/container = user.loc
 		to_chat(user, "<span class='warning'>You leap and slam your head against the inside of [container]! Ouch!</span>")
 		user.AdjustParalysis(6 SECONDS)
@@ -699,7 +699,7 @@
 			else
 				to_chat(user, "<span class='notice'><b>Mood</b>: You sense strange thoughts from [M.name].</span>")
 
-		if(istype(M,/mob/living/carbon/human))
+		if(ishuman(M))
 			var/numbers[0]
 			var/mob/living/carbon/human/H = M
 			if(H.mind && H.mind.initial_account)

code/game/gamemodes/blob/blob_report.dm

@@ -44,7 +44,7 @@
 	var/station_zlevel = level_name_to_num(MAIN_STATION)
 	for(var/turf/T in block(locate(1, 1, station_zlevel), locate(world.maxx, world.maxy, station_zlevel)))
 
-		if(istype(T,/turf/simulated/floor))
+		if(isfloorturf(T))
 			if(!(T:burnt))
 				src.floor += 12
 			else

code/game/gamemodes/cult/cult_structures.dm

@@ -93,7 +93,7 @@
 	if(!QDELETED(src) && picked_type && Adjacent(user) && !user.incapacitated() && cooldowntime <= world.time)
 		cooldowntime = world.time + creation_delay
 		var/obj/O = new picked_type
-		if(istype(O, /obj/structure) || !user.put_in_hands(O))
+		if(isstructure(O) || !user.put_in_hands(O))
 			O.forceMove(get_turf(src))
 		to_chat(user, replacetext("[creation_message]", "%ITEM%", "[O.name]"))
 

code/game/gamemodes/miniantags/abduction/abduction_gear.dm

@@ -272,7 +272,7 @@
 	var/list/all_items = M.GetAllContents()
 
 	for(var/obj/I in all_items)
-		if(istype(I, /obj/item/radio))
+		if(isradio(I))
 			var/obj/item/radio/R = I
 			R.listening = FALSE // Prevents the radio from buzzing due to the EMP, preserving possible stealthiness.
 			R.emp_act(1)

code/game/gamemodes/miniantags/guardian/types/bomb.dm

@@ -22,7 +22,7 @@
 	if(get_dist(get_turf(src), get_turf(A)) > 1)
 		to_chat(src, "<span class='danger'>You're too far from [A] to disguise it as a bomb.</span>")
 		return
-	if(istype(A, /obj/))
+	if(isobj(A))
 		if(bomb_cooldown <= world.time && !stat)
 			var/obj/item/guardian_bomb/B = new /obj/item/guardian_bomb(get_turf(A))
 			add_attack_logs(src, A, "booby trapped (summoner: [summoner])")

code/game/gamemodes/miniantags/morph/morph.dm

@@ -283,7 +283,7 @@
 		if(ambush_prepared)
 			ambush_attack(L)
 			return TRUE // No double attack
-	else if(istype(target,/obj/item)) // Eat items just to be annoying
+	else if(isitem(target)) // Eat items just to be annoying
 		var/obj/item/I = target
 		if(!I.anchored)
 			try_eat(I)

code/game/gamemodes/nuclear/nuclear.dm

@@ -309,7 +309,7 @@
 
 /datum/game_mode/proc/is_operatives_are_dead()
 	for(var/datum/mind/operative_mind in syndicates)
-		if(!istype(operative_mind.current,/mob/living/carbon/human))
+		if(!ishuman(operative_mind.current))
 			if(operative_mind.current)
 				if(operative_mind.current.stat!=2)
 					return 0

code/game/gamemodes/wizard/artefact.dm

@@ -718,7 +718,7 @@ GLOBAL_LIST_EMPTY(multiverse)
 	if(unlimited) //no point, the list isn't used.
 		return
 	for(var/X in spooky_scaries)
-		if(!istype(X, /mob/living/carbon/human))
+		if(!ishuman(X))
 			spooky_scaries.Remove(X)
 			continue
 		var/mob/living/carbon/human/H = X

code/game/gamemodes/wizard/raginmages.dm

@@ -35,13 +35,13 @@
 	for(var/datum/mind/wizard in wizards)
 		if(isnull(wizard.current))
 			continue
-		if(!istype(wizard.current,/mob/living/carbon))
+		if(!iscarbon(wizard.current))
 			if(istype(get_area(wizard.current), /area/wizard_station)) // We don't want people camping other wizards
 				to_chat(wizard.current, "<span class='warning'>If there aren't any admins on and another wizard is camping you in the wizard lair, report them on the forums</span>")
 				message_admins("[wizard.current] was transformed in the wizard lair, another wizard is likely camping")
 				end_squabble(get_area(wizard.current))
 			continue
-		if(istype(wizard.current,/mob/living/carbon/brain))
+		if(isbrain(wizard.current))
 			if(istype(get_area(wizard.current), /area/wizard_station)) // We don't want people camping other wizards
 				to_chat(wizard.current, "<span class='warning'>If there aren't any admins on and another wizard is camping you in the wizard lair, report them on the forums</span>")
 				message_admins("[wizard.current] was brainified in the wizard lair, another wizard is likely camping")

code/game/gamemodes/wizard/spellbook.dm

@@ -1050,7 +1050,7 @@
 	desc = "This book is more horse than your mind has room for."
 
 /obj/item/spellbook/oneuse/horsemask/recoil(mob/living/carbon/user as mob)
-	if(istype(user, /mob/living/carbon/human))
+	if(ishuman(user))
 		to_chat(user, "<font size='15' color='red'><b>HOR-SIE HAS RISEN</b></font>")
 		var/obj/item/clothing/mask/horsehead/magichead = new /obj/item/clothing/mask/horsehead
 		magichead.flags |= NODROP | DROPDEL	//curses!

code/game/gamemodes/wizard/wizard.dm

@@ -164,7 +164,7 @@
 
 	// Wizards
 	for(var/datum/mind/wizard in wizards)
-		if(!istype(wizard.current,/mob/living/carbon))
+		if(!iscarbon(wizard.current))
 			continue
 		if(wizard.current.stat==DEAD)
 			continue
@@ -175,7 +175,7 @@
 	// Apprentices
 	if(!wizards_alive)
 		for(var/datum/mind/apprentice in apprentices)
-			if(!istype(apprentice.current,/mob/living/carbon))
+			if(!iscarbon(apprentice.current))
 				continue
 			if(apprentice.current.stat==DEAD)
 				continue

code/game/machinery/camera/tracking.dm

@@ -126,7 +126,7 @@
 
 		// Human check
 		var/human = 0
-		if(istype(M, /mob/living/carbon/human))
+		if(ishuman(M))
 			human = 1
 
 		var/name = M.name

code/game/machinery/computer/HolodeckControl.dm

@@ -498,7 +498,7 @@
 		w_class = WEIGHT_CLASS_SMALL
 		playsound(user, 'sound/weapons/saberoff.ogg', 20, 1)
 		to_chat(user, "<span class='notice'>[src] can now be concealed.</span>")
-	if(istype(user,/mob/living/carbon/human))
+	if(ishuman(user))
 		var/mob/living/carbon/human/H = user
 		H.update_inv_l_hand()
 		H.update_inv_r_hand()

code/game/machinery/computer/sm_monitor.dm

@@ -100,7 +100,7 @@
 		return
 	for(var/obj/machinery/atmospherics/supermatter_crystal/S in SSair.atmos_machinery)
 		// Delaminating, not within coverage, not on a tile.
-		if(!(is_station_level(S.z) || is_mining_level(S.z) || atoms_share_level(S, T) || !istype(S.loc, /turf/simulated/)))
+		if(!(is_station_level(S.z) || is_mining_level(S.z) || atoms_share_level(S, T) || !issimulatedturf(S.loc)))
 			continue
 		supermatters.Add(S)
 

code/game/machinery/portable_tag_turret.dm

@@ -93,7 +93,7 @@
 		if((istype(L.r_hand, target_weapon)) || (istype(L.l_hand, target_weapon)))
 			return TURRET_PRIORITY_TARGET
 
-		if(istype(L, /mob/living/carbon/human))
+		if(ishuman(L))
 			var/mob/living/carbon/human/H = L
 			if(istype(H.wear_suit, target_suit))
 				return TURRET_PRIORITY_TARGET

code/game/machinery/rechargestation.dm

@@ -213,7 +213,7 @@
 			return
 		can_accept_user = 1
 
-	else if(istype(user, /mob/living/carbon/human))
+	else if(ishuman(user))
 		var/mob/living/carbon/human/H = user
 
 		if(H.stat == DEAD)

code/game/machinery/shieldgen.dm

@@ -156,7 +156,7 @@
 	anchored = TRUE
 
 	for(var/turf/target_tile in range(2, src))
-		if(istype(target_tile,/turf/space) && !(locate(/obj/machinery/shield) in target_tile))
+		if(isspaceturf(target_tile) && !(locate(/obj/machinery/shield) in target_tile))
 			if(malfunction && prob(33) || !malfunction)
 				var/obj/machinery/shield/new_shield = new(target_tile)
 				RegisterSignal(new_shield, COMSIG_PARENT_QDELETING, .proc/remove_shield) // Ensures they properly GC

code/game/mecha/equipment/tools/medical_tools.dm

@@ -281,7 +281,7 @@
 		return
 	if(istype(target,/obj/item/reagent_containers/syringe))
 		return load_syringe(target)
-	if(istype(target,/obj/item/storage))//Loads syringes from boxes
+	if(isstorage(target))//Loads syringes from boxes
 		for(var/obj/item/reagent_containers/syringe/S in target.contents)
 			load_syringe(S)
 		return
@@ -516,7 +516,7 @@
 /obj/item/mecha_parts/mecha_equipment/medical/rescue_jaw/action(atom/target)
 	if(!action_checks(target))
 		return
-	if(istype(target, /obj))
+	if(isobj(target))
 		if(!istype(target, /obj/machinery/door))//early return if we're not trying to open a door
 			return
 		var/obj/machinery/door/D = target	//the door we want to open

code/game/mecha/equipment/tools/work_tools.dm

@@ -91,7 +91,7 @@
 /obj/item/mecha_parts/mecha_equipment/hydraulic_clamp/kill/action(atom/target)
 	if(!action_checks(target)) return
 	if(!cargo_holder) return
-	if(istype(target,/obj))
+	if(isobj(target))
 		var/obj/O = target
 		if(!O.anchored)
 			if(cargo_holder.cargo.len < cargo_holder.cargo_capacity)
@@ -110,7 +110,7 @@
 		else
 			occupant_message("<span class='warning'>[target] is firmly secured!</span>")
 
-	else if(istype(target,/mob/living))
+	else if(isliving(target))
 		var/mob/living/M = target
 		if(M.stat == DEAD) return
 		if(chassis.occupant.a_intent == INTENT_HARM)

code/game/mecha/equipment/weapons/weapons.dm

@@ -213,7 +213,7 @@
 	playsound(chassis, 'sound/items/airhorn.ogg', 100, 1)
 	chassis.occupant_message("<font color='red' size='5'>HONK</font>")
 	for(var/mob/living/carbon/M in ohearers(6, chassis))
-		if(istype(M, /mob/living/carbon/human))
+		if(ishuman(M))
 			var/mob/living/carbon/human/H = M
 			if(H.check_ear_prot() >= HEARING_PROTECTION_TOTAL)
 				continue
@@ -224,7 +224,7 @@
 		M.KnockDown(6 SECONDS)
 		M.Jitter(40 SECONDS)
 		///else the mousetraps are useless
-		if(istype(M, /mob/living/carbon/human))
+		if(ishuman(M))
 			var/mob/living/carbon/human/H = M
 			if(isobj(H.shoes))
 				var/thingy = H.shoes

code/game/objects/items.dm

@@ -565,7 +565,7 @@ GLOBAL_DATUM_INIT(welding_sparks, /mutable_appearance, mutable_appearance('icons
 		to_chat(user, "<span class='danger'>You're going to need to remove that mask/helmet/glasses first!</span>")
 		return
 
-	if(istype(M, /mob/living/carbon/alien) || istype(M, /mob/living/simple_animal/slime))//Aliens don't have eyes./N     slimes also don't have eyes!
+	if(isalien(M) || isslime(M))//Aliens don't have eyes./N     slimes also don't have eyes!
 		to_chat(user, "<span class='warning'>You cannot locate any eyes on this creature!</span>")
 		return
 
@@ -669,7 +669,7 @@ GLOBAL_DATUM_INIT(welding_sparks, /mutable_appearance, mutable_appearance('icons
 /obj/item/proc/remove_item_from_storage(atom/newLoc) //please use this if you're going to snowflake an item out of a obj/item/storage
 	if(!newLoc)
 		return 0
-	if(istype(loc,/obj/item/storage))
+	if(isstorage(loc))
 		var/obj/item/storage/S = loc
 		S.remove_from_storage(src,newLoc)
 		return 1

code/game/objects/items/devices/chameleonproj.dm

@@ -38,7 +38,7 @@
 	if(target.invisibility != 0)
 		return
 	if(!active_dummy)
-		if(istype(target,/obj/item) && !istype(target, /obj/item/disk/nuclear))
+		if(isitem(target) && !istype(target, /obj/item/disk/nuclear))
 			playsound(get_turf(src), 'sound/weapons/flash.ogg', 100, 1, -6)
 			to_chat(user, "<span class='notice'>Scanned [target].</span>")
 			saved_item = target.type

code/game/objects/items/devices/flashlight.dm

@@ -49,7 +49,7 @@
 		if((HAS_TRAIT(user, TRAIT_CLUMSY) || user.getBrainLoss() >= 60) && prob(50))	//too dumb to use flashlight properly
 			return ..()	//just hit them in the head
 
-		if(!(istype(user, /mob/living/carbon/human) || SSticker) && SSticker.mode.name != "monkey")	//don't have dexterity
+		if(!(ishuman(user) || SSticker) && SSticker.mode.name != "monkey")	//don't have dexterity
 			to_chat(user, "<span class='notice'>You don't have the dexterity to do this!</span>")
 			return
 

code/game/objects/items/devices/traitordevices.dm

@@ -59,7 +59,7 @@
 /obj/item/teleporter/emp_act(severity)
 	var/teleported_something = FALSE
 	if(prob(50 / severity))
-		if(istype(loc, /mob/living/carbon/human))
+		if(ishuman(loc))
 			var/mob/living/carbon/human/user = loc
 			to_chat(user, "<span class='userdanger'>[src] buzzes and activates!</span>")
 			attempt_teleport(user, TRUE)

code/game/objects/items/robot/robot_parts.dm

@@ -320,7 +320,7 @@
 		else
 			to_chat(user, "<span class='warning'>The MMI must go in after everything else!</span>")
 
-	if(istype(W,/obj/item/pen))
+	if(is_pen(W))
 		to_chat(user, "<span class='warning'>You need to use a multitool to name [src]!</span>")
 	return
 

code/game/objects/items/stacks/nanopaste.dm

@@ -23,7 +23,7 @@
 		else
 			to_chat(user, "<span class='notice'>All [R]'s systems are nominal.</span>")
 
-	if(istype(M,/mob/living/carbon/human)) //Repairing robotic limbs and IPCs
+	if(ishuman(M)) //Repairing robotic limbs and IPCs
 		var/mob/living/carbon/human/H = M
 		var/obj/item/organ/external/S = H.get_organ(user.zone_selected)
 

code/game/objects/items/toys.dm

@@ -169,7 +169,7 @@
 		item_state = "sword0"
 		w_class = WEIGHT_CLASS_SMALL
 
-	if(istype(user,/mob/living/carbon/human))
+	if(ishuman(user))
 		var/mob/living/carbon/human/H = user
 		H.update_inv_l_hand()
 		H.update_inv_r_hand()

code/game/objects/items/weapons/clown_items.dm

@@ -56,7 +56,7 @@
 	cooldown = world.time + 30 SECONDS
 	var/turf/T = get_turf(src)
 	for(var/mob/living/carbon/M in ohearers(7, T))
-		if(istype(M, /mob/living/carbon/human))
+		if(ishuman(M))
 			var/mob/living/carbon/human/H = M
 			if(!H.can_hear())
 				continue

code/game/objects/items/weapons/dna_injector.dm

@@ -70,10 +70,10 @@
 /obj/item/dnainjector/proc/inject(mob/living/M, mob/user)
 	if(used)
 		return
-	if(istype(M,/mob/living))
+	if(isliving(M))
 		M.apply_effect(rand(20 / (damage_coeff ** 2), 50 / (damage_coeff ** 2)), IRRADIATE)
 	var/mob/living/carbon/human/H
-	if(istype(M, /mob/living/carbon/human))
+	if(ishuman(M))
 		H = M
 
 	if(!buf)

code/game/objects/items/weapons/garrote.dm

@@ -45,7 +45,7 @@
 	if(garrote_time > world.time) // Cooldown
 		return
 
-	if(!istype(user, /mob/living/carbon/human)) // spap_hand is a proc of /mob/living, user is simply /mob
+	if(!ishuman(user)) // spap_hand is a proc of /mob/living, user is simply /mob
 		return
 
 	var/mob/living/carbon/human/U = user
@@ -54,7 +54,7 @@
 		to_chat(user, "<span class = 'warning'>You must use both hands to garrote [M]!</span>")
 		return
 
-	if(!istype(M, /mob/living/carbon/human))
+	if(!ishuman(M))
 		to_chat(user, "<span class = 'warning'>You don't think that garroting [M] would be very effective...</span>")
 		return
 
@@ -109,7 +109,7 @@
 		return
 
 
-	if(!istype(loc, /mob/living/carbon/human))
+	if(!ishuman(loc))
 		strangling = null
 		update_icon(UPDATE_ICON_STATE)
 		STOP_PROCESSING(SSobj, src)

code/game/objects/items/weapons/grenades/clowngrenade.dm

@@ -41,7 +41,7 @@
 
 /obj/item/grown/bananapeel/traitorpeel/throw_impact(atom/hit_atom)
 	var/burned = rand(1,3)
-	if(istype(hit_atom ,/mob/living))
+	if(isliving(hit_atom))
 		var/mob/living/M = hit_atom
 		M.take_organ_damage(0, burned)
 	return ..()

code/game/objects/items/weapons/melee/energy.dm

@@ -77,7 +77,7 @@
 		playsound(user, 'sound/weapons/saberoff.ogg', 35, 1)  //changed it from 50% volume to 35% because deafness
 		set_light(0)
 		to_chat(user, "<span class='notice'>[src] can now be concealed.</span>")
-	if(istype(user,/mob/living/carbon/human))
+	if(ishuman(user))
 		var/mob/living/carbon/human/H = user
 		H.update_inv_l_hand()
 		H.update_inv_r_hand()

code/game/objects/items/weapons/shields.dm

@@ -104,7 +104,7 @@
 		w_class = WEIGHT_CLASS_TINY
 		playsound(user, 'sound/weapons/saberoff.ogg', 35, 1)
 		to_chat(user, "<span class='notice'>[src] can now be concealed.</span>")
-	if(istype(user,/mob/living/carbon/human))
+	if(ishuman(user))
 		var/mob/living/carbon/human/H = user
 		H.update_inv_l_hand()
 		H.update_inv_r_hand()
@@ -148,7 +148,7 @@
 		w_class = WEIGHT_CLASS_NORMAL
 		slot_flags = null
 		to_chat(user, "<span class='notice'>[src] can now be concealed.</span>")
-	if(istype(user,/mob/living/carbon/human))
+	if(ishuman(user))
 		var/mob/living/carbon/human/H = user
 		H.update_inv_l_hand()
 		H.update_inv_r_hand()

code/game/objects/items/weapons/soap.dm

@@ -62,7 +62,7 @@
 			to_chat(user, "<span class='notice'>You 'clean' \the [target.name].</span>")
 			if(issimulatedturf(target))
 				new /obj/effect/decal/cleanable/blood/gibs/cleangibs(target)
-			else if(istype(target,/mob/living/carbon))
+			else if(iscarbon(target))
 				for(var/obj/item/carried_item in target.contents)
 					if(!istype(carried_item, /obj/item/implant))//If it's not an implant.
 						carried_item.add_mob_blood(target)//Oh yes, there will be blood...

code/game/objects/items/weapons/storage/internal.dm

@@ -32,7 +32,7 @@
 /obj/item/storage/internal/proc/handle_mousedrop(mob/user as mob, obj/over_object as obj)
 	if(ishuman(user)) //so monkeys can take off their backpacks -- Urist
 
-		if(istype(user.loc,/obj/mecha)) // stops inventory actions in a mech
+		if(ismecha(user.loc)) // stops inventory actions in a mech
 			return 0
 
 		if(over_object == user && Adjacent(user)) // this must come before the screen objects only block

code/game/objects/items/weapons/twohanded.dm

@@ -822,7 +822,7 @@
 				Z.ex_act(2)
 				charged = 3
 				playsound(user, 'sound/weapons/marauder.ogg', 50, 1)
-			else if(istype(A, /obj/structure) || ismecha(A))
+			else if(isstructure(A) || ismecha(A))
 				var/obj/Z = A
 				Z.ex_act(2)
 				charged = 3

code/game/objects/objs.dm

@@ -146,7 +146,7 @@
 
 		// check for TK users
 
-		if(istype(usr, /mob/living/carbon/human))
+		if(ishuman(usr))
 			if(istype(usr.l_hand, /obj/item/tk_grab) || istype(usr.r_hand, /obj/item/tk_grab/))
 				if(!(usr in nearby))
 					if(usr.client && usr.machine == src)

code/game/objects/structures/stool_bed_chair_nest/chairs.dm

@@ -545,7 +545,7 @@
 		smash(user)
 
 /obj/item/chair/stool/attack(mob/M as mob, mob/user as mob)
-	if(prob(5) && istype(M,/mob/living))
+	if(prob(5) && isliving(M))
 		user.visible_message("<span class='danger'>[user] breaks [src] over [M]'s back!.</span>")
 		user.unEquip(src)
 		var/obj/item/stack/sheet/metal/m = new/obj/item/stack/sheet/metal

code/modules/admin/db_ban/functions.dm

@@ -102,7 +102,7 @@
 	var/a_computerid
 	var/a_ip
 
-	if(src.owner && istype(src.owner, /client))
+	if(src.owner && isclient(src.owner))
 		a_ckey = src.owner:ckey
 		a_computerid = src.owner:computer_id
 		a_ip = src.owner:address
@@ -405,7 +405,7 @@
 		to_chat(usr, "<span class='warning'>Database update failed due to multiple bans having the same ID. Contact the database admin.</span>")
 		return
 
-	if(!src.owner || !istype(src.owner, /client))
+	if(!src.owner || !isclient(src.owner))
 		return
 
 	var/unban_ckey = src.owner:ckey

code/modules/admin/player_panel.dm

@@ -379,7 +379,7 @@
 					if(istype(disk_loc, /mob))
 						var/mob/M = disk_loc
 						dat += "carried by <a href='?src=[UID()];adminplayeropts=[M.UID()]'>[M.real_name]</a> "
-					if(istype(disk_loc, /obj))
+					if(isobj(disk_loc))
 						var/obj/O = disk_loc
 						dat += "in \a [O.name] "
 					disk_loc = disk_loc.loc

code/modules/admin/topic.dm

@@ -1138,7 +1138,7 @@
 			return
 
 		M.loc = prison_cell
-		if(istype(M, /mob/living/carbon/human))
+		if(ishuman(M))
 			var/mob/living/carbon/human/prisoner = M
 			prisoner.equip_to_slot_or_del(new /obj/item/clothing/under/color/orange(prisoner), slot_w_uniform)
 			prisoner.equip_to_slot_or_del(new /obj/item/clothing/shoes/orange(prisoner), slot_shoes)
@@ -1347,7 +1347,7 @@
 				I.plane = initial(I.plane)
 				I.dropped(M)
 
-		if(istype(M, /mob/living/carbon/human))
+		if(ishuman(M))
 			var/mob/living/carbon/human/observer = M
 			observer.equip_to_slot_or_del(new /obj/item/clothing/under/suit(observer), slot_w_uniform)
 			observer.equip_to_slot_or_del(new /obj/item/clothing/shoes/black(observer), slot_shoes)

code/modules/admin/verbs/SDQL2/SDQL_2.dm

@@ -134,7 +134,7 @@
 										if(!temp.vv_edit_var(v, SDQL_expression(d, set_list[sets])))
 											to_chat(usr, "[temp] rejected your varedit.")
 										break
-									if(temp.vars.Find(v) && (istype(temp.vars[v], /datum) || istype(temp.vars[v], /client)))
+									if(temp.vars.Find(v) && (istype(temp.vars[v], /datum) || isclient(temp.vars[v])))
 										temp = temp.vars[v]
 									else
 										break

code/modules/admin/verbs/adminpm.dm

@@ -65,7 +65,7 @@
 	var/client/C
 	if(istext(whom))
 		C = get_client_by_ckey(whom)
-	else if(istype(whom,/client))
+	else if(isclient(whom))
 		C = whom
 
 	if(!C)

code/modules/admin/verbs/debug.dm

@@ -281,7 +281,7 @@ GLOBAL_PROTECT(AdminProcCallSpamPrevention)
 	if(!SSticker)
 		alert("Wait until the game starts")
 		return
-	if(istype(M, /mob/living/carbon/human))
+	if(ishuman(M))
 		log_admin("[key_name(src)] has robotized [M.key].")
 		spawn(10)
 			M:Robotize()
@@ -452,7 +452,7 @@ GLOBAL_PROTECT(AdminProcCallSpamPrevention)
 	if(!SSticker)
 		alert("Wait until the game starts")
 		return
-	if(istype(M, /mob/living/carbon/human))
+	if(ishuman(M))
 		var/mob/living/carbon/human/H = M
 		if(H.wear_id)
 			var/obj/item/card/id/id = H.wear_id

code/modules/admin/verbs/modifyvariables.dm

@@ -31,13 +31,13 @@ GLOBAL_PROTECT(VVmaint_only)
 	else if(ismob(var_value))
 		. = VV_MOB_REFERENCE
 
-	else if(isloc(var_value))
+	else if(isatom(var_value))
 		. = VV_ATOM_REFERENCE
 
 	else if(istype(var_value, /matrix))
 		. = VV_MATRIX
 
-	else if(istype(var_value,/client))
+	else if(isclient(var_value))
 		. = VV_CLIENT
 
 	else if(istype(var_value, /datum))

code/modules/admin/verbs/randomverbs.dm

@@ -36,7 +36,7 @@
 			L.Paralyse(10 SECONDS)
 		sleep(5)	//so they black out before warping
 		M.loc = pick(GLOB.prisonwarp)
-		if(istype(M, /mob/living/carbon/human))
+		if(ishuman(M))
 			var/mob/living/carbon/human/prisoner = M
 			prisoner.equip_to_slot_or_del(new /obj/item/clothing/under/color/orange(prisoner), slot_w_uniform)
 			prisoner.equip_to_slot_or_del(new /obj/item/clothing/shoes/orange(prisoner), slot_shoes)

code/modules/antagonists/traitor/datum_traitor.dm

@@ -208,7 +208,7 @@
 		to_chat(traitor_mob, "<span class='warning'>Unfortunately, the Syndicate wasn't able to give you an uplink.</span>")
 		return FALSE // They had no PDA or radio for whatever reason.
 
-	if(istype(R, /obj/item/radio))
+	if(isradio(R))
 		// generate list of radio freqs
 		var/obj/item/radio/target_radio = R
 		var/freq = PUBLIC_LOW_FREQ

code/modules/assembly/voice.dm

@@ -24,7 +24,7 @@
 	hear_input(M, msg, 1)
 
 /obj/item/assembly/voice/proc/hear_input(mob/living/M as mob, msg, type)
-	if(!istype(M,/mob/living))
+	if(!isliving(M))
 		return
 
 	if(listening)

code/modules/buildmode/submodes/basic.dm

@@ -21,25 +21,25 @@
 
 	if(istype(object,/turf) && left_click && !alt_click && !ctrl_click)
 		var/turf/T = object
-		if(istype(object,/turf/space))
+		if(isspaceturf(object))
 			T.ChangeTurf(/turf/simulated/floor/plasteel)
-		else if(istype(object,/turf/simulated/floor))
+		else if(isfloorturf(object))
 			T.ChangeTurf(/turf/simulated/wall)
-		else if(istype(object,/turf/simulated/wall))
+		else if(iswallturf(object))
 			T.ChangeTurf(/turf/simulated/wall/r_wall)
 		log_admin("Build Mode: [key_name(user)] built [T] at ([T.x],[T.y],[T.z])")
 	else if(right_click)
 		log_admin("Build Mode: [key_name(user)] deleted [object] at ([object.x],[object.y],[object.z])")
-		if(istype(object,/turf/simulated/wall))
+		if(iswallturf(object))
 			var/turf/T = object
 			T.ChangeTurf(/turf/simulated/floor/plasteel)
-		else if(istype(object,/turf/simulated/floor))
+		else if(isfloorturf(object))
 			var/turf/T = object
 			T.ChangeTurf(T.baseturf)
-		else if(istype(object,/turf/simulated/wall/r_wall))
+		else if(isreinforcedwallturf(object))
 			var/turf/T = object
 			T.ChangeTurf(/turf/simulated/wall)
-		else if(istype(object,/obj))
+		else if(isobj(object))
 			qdel(object)
 	else if(istype(object,/turf) && alt_click && left_click)
 		log_admin("Build Mode: [key_name(user)] built an airlock at ([object.x],[object.y],[object.z])")

code/modules/clothing/clothing.dm

@@ -87,7 +87,7 @@
 	if(slot in list(slot_r_hand, slot_l_hand, slot_in_backpack, slot_l_store, slot_r_store))
 		return 1
 
-	if(species_restricted && istype(M,/mob/living/carbon/human))
+	if(species_restricted && ishuman(M))
 
 		var/wearable = null
 		var/exclusive = null
@@ -335,7 +335,7 @@ BLIND     // can't see anything
 				to_chat(user, "Your suit will now report your vital lifesigns.")
 			if(SUIT_SENSOR_TRACKING)
 				to_chat(user, "Your suit will now report your vital lifesigns as well as your coordinate position.")
-		if(istype(user,/mob/living/carbon/human))
+		if(ishuman(user))
 			var/mob/living/carbon/human/H = user
 			if(H.w_uniform == src)
 				H.update_suit_sensors()
@@ -354,7 +354,7 @@ BLIND     // can't see anything
 			if(SUIT_SENSOR_TRACKING)
 				for(var/mob/V in viewers(user, 1))
 					V.show_message("[user] sets [src.loc]'s sensors to maximum.", 1)
-		if(istype(src,/mob/living/carbon/human))
+		if(ishuman(src))
 			var/mob/living/carbon/human/H = src
 			if(H.w_uniform == src)
 				H.update_suit_sensors()

code/modules/clothing/spacesuits/hardsuit.dm

@@ -56,7 +56,7 @@
 	on = !on
 	icon_state = "[basestate][on]-[item_color]"
 
-	if(istype(user,/mob/living/carbon/human))
+	if(ishuman(user))
 		var/mob/living/carbon/human/H = user
 		H.update_inv_head()
 

code/modules/clothing/suits/armor.dm

@@ -374,7 +374,7 @@
 	icon_state = "reactiveoff"
 	item_state = "reactiveoff"
 	addtimer(CALLBACK(src, .proc/reboot), disable_time SECONDS)
-	if(istype(loc, /mob/living/carbon/human))
+	if(ishuman(loc))
 		var/mob/living/carbon/human/C = loc
 		C.update_inv_wear_suit()
 

code/modules/clothing/under/accessories/holster.dm

@@ -59,7 +59,7 @@
 	if(!holstered)
 		return
 
-	if(istype(user.get_active_hand(),/obj) && istype(user.get_inactive_hand(),/obj))
+	if(isobj(user.get_active_hand()) && isobj(user.get_inactive_hand()))
 		to_chat(user, "<span class='warning'>You need an empty hand to draw [holstered]!</span>")
 	else
 		if(user.a_intent == INTENT_HARM)

code/modules/customitems/item_defines.dm

@@ -42,7 +42,7 @@
 		to_chat(user, "<span class= 'notice'>[src] is out of ink.</span>")
 		return
 
-	if(!istype(M, /mob/living/carbon/human))
+	if(!ishuman(M))
 		to_chat(user, "<span class= 'notice'>You don't think tattooing [M] is the best idea.</span>")
 		return
 

code/modules/detective_work/detective_work.dm

@@ -3,7 +3,7 @@
 /atom/var/list/suit_fibers
 
 /atom/proc/add_fibers(mob/living/carbon/human/M)
-	if(M.gloves && istype(M.gloves,/obj/item/clothing/))
+	if(M.gloves && isclothing(M.gloves))
 		var/obj/item/clothing/gloves/G = M.gloves
 		if(G.transfer_blood > 1) //bloodied gloves transfer blood to touched objects
 			if(add_blood(G.blood_DNA, G.blood_color)) //only reduces the bloodiness of our gloves if the item wasn't already bloody
@@ -13,7 +13,7 @@
 			M.bloody_hands--
 	if(!suit_fibers) suit_fibers = list()
 	var/fibertext
-	var/item_multiplier = istype(src,/obj/item)?1.2:1
+	var/item_multiplier = isitem(src)?1.2:1
 	if(M.wear_suit)
 		fibertext = "Material from \a [M.wear_suit]."
 		if(prob(10*item_multiplier) && !(fibertext in suit_fibers) && M.wear_suit.can_leave_fibers)

code/modules/detective_work/evidence.dm

@@ -38,7 +38,7 @@
 		return
 
 	if(!isturf(I.loc)) //If it isn't on the floor. Do some checks to see if it's in our hands or a box. Otherwise give up.
-		if(istype(I.loc,/obj/item/storage))	//in a container.
+		if(isstorage(I.loc))	//in a container.
 			var/obj/item/storage/U = I.loc
 			U.remove_from_storage(I, src)
 		else if(user.l_hand == I)					//in a hand

code/modules/economy/EFTPOS.dm

@@ -40,7 +40,7 @@
 	R.overlays += stampoverlay
 	R.stamps += "<HR><i>This paper has been stamped by the EFTPOS device.</i>"
 	var/obj/item/smallDelivery/D = new(get_turf(loc))
-	if(istype(loc, /mob/living/carbon/human))
+	if(ishuman(loc))
 		var/mob/living/carbon/human/H = loc
 		if(H.back)
 			D.forceMove(H.back)

code/modules/events/undead.dm

@@ -15,7 +15,7 @@
 		if(A.type == /area) continue
 		var/list/turflist = list()
 		for(var/turf/T in A)
-			if(istype(T,/turf/space) || T.density) continue
+			if(isspaceturf(T) || T.density) continue
 			if(locate(/mob/living) in T) continue
 			var/okay = 1
 			for(var/obj/O in T)

code/modules/food_and_drinks/food/foods/pizza.dm

@@ -362,7 +362,7 @@
 			to_chat(user, "<span class='warning'>You try to push [I] through the lid but it doesn't work!</span>")
 		return
 
-	if(istype(I, /obj/item/pen/))
+	if(is_pen(I))
 		if(open)
 			return
 		var/t = clean_input("Enter what you want to add to the tag:", "Write", null)

code/modules/food_and_drinks/food/snacks.dm

@@ -80,10 +80,10 @@
 
 
 /obj/item/reagent_containers/food/snacks/attackby(obj/item/W, mob/user, params)
-	if(istype(W,/obj/item/pen))
+	if(is_pen(W))
 		rename_interactive(user, W, use_prefix = FALSE, prompt = "What would you like to name this dish?")
 		return
-	if(istype(W,/obj/item/storage))
+	if(isstorage(W))
 		..() // -> item/attackby(, params)
 
 	else if(istype(W,/obj/item/kitchen/utensil))
@@ -118,7 +118,7 @@
 				var/obj/item/TrashItem
 				if(ispath(trash,/obj/item))
 					TrashItem = new trash(src)
-				else if(istype(trash,/obj/item))
+				else if(isitem(trash))
 					TrashItem = trash
 				TrashItem.forceMove(loc)
 			qdel(src)

code/modules/food_and_drinks/kitchen_machinery/gibber.dm

@@ -377,7 +377,7 @@
 	if(!istype(H))	return 0
 	if(H != occupant)	return 0 //only using H as a shortcut to typecast
 	for(var/obj/O in H)
-		if(istype(O,/obj/item/clothing)) //clothing gets skipped to avoid cleaning out shit
+		if(isclothing(O)) //clothing gets skipped to avoid cleaning out shit
 			continue
 		if(istype(O,/obj/item/implant))
 			var/obj/item/implant/I = O

code/modules/food_and_drinks/kitchen_machinery/monkeyrecycler.dm

@@ -85,7 +85,7 @@ GLOBAL_LIST_EMPTY(monkey_recyclers)
 	if(istype(O, /obj/item/grab))
 		var/obj/item/grab/G = O
 		var/grabbed = G.affecting
-		if(istype(grabbed, /mob/living/carbon/human))
+		if(ishuman(grabbed))
 			var/mob/living/carbon/human/target = grabbed
 			if(issmall(target))
 				if(target.stat == 0)

code/modules/holiday/christmas.dm

@@ -34,7 +34,7 @@
 	var/cracked = 0
 
 /obj/item/toy/xmas_cracker/attack(mob/target, mob/user)
-	if( !cracked && istype(target,/mob/living/carbon/human) && (target.stat == CONSCIOUS) && !target.get_active_hand() )
+	if( !cracked && ishuman(target) && (target.stat == CONSCIOUS) && !target.get_active_hand() )
 		target.visible_message("<span class='notice'>[user] and [target] pop \an [src]! *pop*</span>", "<span class='notice'>You pull \an [src] with [target]! *pop*</span>", "<span class='notice'>You hear a *pop*.</span>")
 		var/obj/item/paper/Joke = new /obj/item/paper(user.loc)
 		Joke.name = "[pick("awful","terrible","unfunny")] joke"

code/modules/hydroponics/hydroponics.dm

@@ -756,7 +756,7 @@
 		var/irrigate = 0	//How am I supposed to irrigate pill contents?
 		var/transfer_amount
 
-		if(istype(reagent_source, /obj/item/reagent_containers/food/snacks) || istype(reagent_source, /obj/item/reagent_containers/food/pill))
+		if(istype(reagent_source, /obj/item/reagent_containers/food/snacks) || ispill(reagent_source))
 			visi_msg="[user] composts [reagent_source], spreading it through [target]"
 			transfer_amount = reagent_source.reagents.total_volume
 		else
@@ -794,7 +794,7 @@
 			S.my_atom = H
 
 			reagent_source.reagents.trans_to(S,split)
-			if(istype(reagent_source, /obj/item/reagent_containers/food/snacks) || istype(reagent_source, /obj/item/reagent_containers/food/pill))
+			if(istype(reagent_source, /obj/item/reagent_containers/food/snacks) || ispill(reagent_source))
 				qdel(reagent_source)
 
 			H.applyChemicals(S, user)

code/modules/mob/holder.dm

@@ -52,7 +52,7 @@
 		M.unEquip(src)
 		to_chat(M, "[src] wriggles out of your grip!")
 		to_chat(L, "You wriggle out of [M]'s grip!")
-	else if(istype(loc,/obj/item))
+	else if(isitem(loc))
 		to_chat(L, "You struggle free of [loc].")
 		forceMove(get_turf(src))
 

code/modules/mob/living/carbon/brain/brain.dm

@@ -38,9 +38,9 @@
 			return 0
 		else
 			return 1
-	if(istype(other, /mob/living/carbon/human))
+	if(ishuman(other))
 		return 1
-	if(istype(other, /mob/living/simple_animal/slime))
+	if(isslime(other))
 		return 1
 	return ..()
 

code/modules/mob/living/carbon/brain/brain_item.dm

@@ -64,7 +64,7 @@
 		if(owner.mind && !non_primary)//don't transfer if the owner does not have a mind.
 			B.transfer_identity(user)
 
-	if(istype(owner,/mob/living/carbon/human))
+	if(ishuman(owner))
 		var/mob/living/carbon/human/H = owner
 		H.update_hair()
 	
@@ -75,7 +75,7 @@
 
 	name = "[initial(name)]"
 	var/brain_already_exists = 0
-	if(istype(target,/mob/living/carbon/human)) // No more IPC multibrain shenanigans
+	if(ishuman(target)) // No more IPC multibrain shenanigans
 		if(target.get_int_organ(/obj/item/organ/internal/brain))
 			brain_already_exists = 1
 

code/modules/mob/living/carbon/carbon.dm

@@ -61,7 +61,7 @@
 			if(I && I.force)
 				var/d = rand(round(I.force / 4), I.force)
 
-				if(istype(src, /mob/living/carbon/human))
+				if(ishuman(src))
 					var/mob/living/carbon/human/H = src
 					var/obj/item/organ/external/organ = H.get_organ("chest")
 					if(istype(organ))
@@ -708,7 +708,7 @@ GLOBAL_LIST_INIT(ventcrawl_machinery, list(/obj/machinery/atmospherics/unary/ven
 		back = null
 		update_inv_back()
 	else if(I == wear_mask)
-		if(istype(src, /mob/living/carbon/human)) //If we don't do this hair won't be properly rebuilt.
+		if(ishuman(src)) //If we don't do this hair won't be properly rebuilt.
 			return
 		wear_mask = null
 		update_inv_wear_mask()
@@ -1067,7 +1067,7 @@ GLOBAL_LIST_INIT(ventcrawl_machinery, list(/obj/machinery/atmospherics/unary/ven
 		return FALSE
 
 	if(!(slipAny))
-		if(istype(src, /mob/living/carbon/human))
+		if(ishuman(src))
 			var/mob/living/carbon/human/H = src
 			if(isobj(H.shoes) && H.shoes.flags & NOSLIP)
 				return FALSE

code/modules/mob/living/carbon/carbon_defense.dm

@@ -1,7 +1,7 @@
 /mob/living/carbon/hitby(atom/movable/AM, skipcatch, hitpush = TRUE, blocked = FALSE, datum/thrownthing/throwingdatum)
 	if(!skipcatch)
 		if(in_throw_mode && !HAS_TRAIT(src, TRAIT_HANDS_BLOCKED) && !restrained())  //Makes sure player is in throw mode
-			if(!istype(AM,/obj/item) || !isturf(AM.loc))
+			if(!isitem(AM) || !isturf(AM.loc))
 				return FALSE
 			if(get_active_hand())
 				return FALSE

code/modules/mob/living/carbon/human/examine.dm

@@ -379,7 +379,7 @@
 
 //Helper procedure. Called by /mob/living/carbon/human/examine() and /mob/living/carbon/human/Topic() to determine HUD access to security and medical records.
 /proc/hasHUD(mob/M, hudtype)
-	if(istype(M, /mob/living/carbon/human))
+	if(ishuman(M))
 		var/have_hudtypes = list()
 		var/mob/living/carbon/human/H = M
 

code/modules/mob/living/carbon/human/human_defense.dm

@@ -161,7 +161,7 @@ emp_act
 	var/list/body_parts = list(head, wear_mask, wear_suit, w_uniform, back, gloves, shoes, belt, s_store, glasses, l_ear, r_ear, wear_id) //Everything but pockets. Pockets are l_store and r_store. (if pockets were allowed, putting something armored, gloves or hats for example, would double up on the armor)
 	for(var/bp in body_parts)
 		if(!bp)	continue
-		if(bp && istype(bp ,/obj/item/clothing))
+		if(bp && isclothing(bp))
 			var/obj/item/clothing/C = bp
 			if(C.body_parts_covered & def_zone.body_part)
 				protection += C.armor.getRating(type)
@@ -187,24 +187,24 @@ emp_act
 	var/list/body_parts = list(head, wear_mask, wear_suit, w_uniform)
 	for(var/bp in body_parts)
 		if(!bp)  continue
-		if(bp && istype(bp ,/obj/item/clothing))
+		if(bp && isclothing(bp))
 			var/obj/item/clothing/C = bp
 			if(C.body_parts_covered & HEAD)
 				return 1
 	return 0
 
 /mob/living/carbon/human/proc/check_reflect(def_zone) //Reflection checks for anything in your l_hand, r_hand, or wear_suit based on the reflection chance var of the object
-	if(wear_suit && istype(wear_suit, /obj/item/))
+	if(wear_suit && isitem(wear_suit))
 		var/obj/item/I = wear_suit
 		if(I.IsReflect(def_zone) == 1)
 			return 1
-	if(l_hand && istype(l_hand, /obj/item/))
+	if(l_hand && isitem(l_hand))
 		var/obj/item/I = l_hand
 		if(I.IsReflect(def_zone) == 1)
 			return 1
 		if(I.IsReflect(def_zone) == 2) //Toy swords
 			return 2
-	if(r_hand && istype(r_hand, /obj/item/))
+	if(r_hand && isitem(r_hand))
 		var/obj/item/I = r_hand
 		if(I.IsReflect(def_zone) == 1)
 			return 1

code/modules/mob/living/carbon/life.dm

@@ -44,7 +44,7 @@
 	if(times_fired % 2 == 1)
 		breathe() //Breathe every other tick, unless suffocating
 	else
-		if(istype(loc, /obj/))
+		if(isobj(loc))
 			var/obj/location_as_object = loc
 			location_as_object.handle_internal_lifeform(src, 0)
 
@@ -68,7 +68,7 @@
 	if(AmountLoseBreath())
 		if(prob(75))
 			emote("gasp")
-		if(istype(loc, /obj/))
+		if(isobj(loc))
 			var/obj/loc_as_obj = loc
 			loc_as_obj.handle_internal_lifeform(src, 0)
 	else
@@ -88,7 +88,7 @@
 
 				breath = loc.remove_air(breath_moles)
 		else //Breathe from loc as obj again
-			if(istype(loc, /obj/))
+			if(isobj(loc))
 				var/obj/loc_as_obj = loc
 				loc_as_obj.handle_internal_lifeform(src, 0)
 

code/modules/mob/living/silicon/robot/component.dm

@@ -274,7 +274,7 @@
 	var/scan_type
 	if(istype(M, /mob/living/silicon/robot))
 		scan_type = "robot"
-	else if(istype(M, /mob/living/carbon/human))
+	else if(ishuman(M))
 		scan_type = "prosthetics"
 	else
 		to_chat(user, "<span class='warning'>You can't analyze non-robotic things!</span>")

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

@@ -340,7 +340,7 @@
 	if(is_type_in_list(AM, pullable_drone_items))
 		..(AM, force = INFINITY) // Drone power! Makes them able to drag pipes and such
 
-	else if(istype(AM,/obj/item))
+	else if(isitem(AM))
 		var/obj/item/O = AM
 		if(O.w_class > WEIGHT_CLASS_SMALL)
 			if(show_message)