Defining Part 4 - Code cleanup toward defines (... and the rest) (#19388)

* I wasn't done

* nits

code/modules/paperwork/paper.dm

@@ -66,7 +66,7 @@
 /obj/item/paper/examine(mob/user)
 	. = ..()
 	if(user.is_literate())
-		if(in_range(user, src) || istype(user, /mob/dead/observer))
+		if(in_range(user, src) || isobserver(user))
 			show_content(user)
 		else
 			. += "<span class='notice'>You have to go closer if you want to read it.</span>"
@@ -400,7 +400,7 @@
 			else if(h_user.head == src)
 				h_user.unEquip(src)
 				h_user.put_in_hands(B)
-			else if(!istype(src.loc, /turf))
+			else if(!isturf(src.loc))
 				src.loc = get_turf(h_user)
 				if(h_user.client)	h_user.client.screen -= src
 				h_user.put_in_hands(B)

code/modules/paperwork/paper_bundle.dm

@@ -193,7 +193,7 @@
 			update_icon()
 	else
 		to_chat(usr, "<span class='notice'>You need to hold it in your hands to change pages.</span>")
-	if(istype(loc, /mob))
+	if(ismob(loc))
 		attack_self(loc)
 
 /obj/item/paper_bundle/AltClick(mob/user)

code/modules/paperwork/photocopier.dm

@@ -154,9 +154,9 @@
 	if(ishuman(copymob)) //Suit checks are in check_mob
 		var/mob/living/carbon/human/H = copymob
 		temp_img = icon('icons/obj/butts.dmi', H.dna.species.butt_sprite)
-	else if(istype(copymob,/mob/living/silicon/robot/drone))
+	else if(isdrone(copymob))
 		temp_img = icon('icons/obj/butts.dmi', "drone")
-	else if(istype(copymob,/mob/living/simple_animal/diona))
+	else if(isnymph(copymob))
 		temp_img = icon('icons/obj/butts.dmi', "nymph")
 	else if(isalien(copymob) || istype(copymob,/mob/living/simple_animal/hostile/alien)) //Xenos have their own asses, thanks to Pybro.
 		temp_img = icon('icons/obj/butts.dmi', "xeno")
@@ -495,7 +495,7 @@
 			toner = 0
 
 /obj/machinery/photocopier/MouseDrop_T(mob/target, mob/living/user)
-	if(!istype(target) || target.buckled || get_dist(user, src) > 1 || get_dist(user, target) > 1 || user.stat || istype(user, /mob/living/silicon/ai) || target.move_resist > user.pull_force)
+	if(!istype(target) || target.buckled || get_dist(user, src) > 1 || get_dist(user, target) > 1 || user.stat || isAI(user) || target.move_resist > user.pull_force)
 		return
 	if(check_mob()) //is target mob or another mob on this photocopier already?
 		return

code/modules/paperwork/photography.dm

@@ -252,7 +252,7 @@ GLOBAL_LIST_INIT(SpookyGhosts, list("ghost","shade","shade2","ghost-narsie","hor
 		// As well as anything that isn't invisible.
 		for(var/atom/A in the_turf)
 			if(A.invisibility)
-				if(see_ghosts && istype(A,/mob/dead/observer))
+				if(see_ghosts && isobserver(A))
 					var/mob/dead/observer/O = A
 					if(O.orbiting_uid)
 						continue
@@ -314,7 +314,7 @@ GLOBAL_LIST_INIT(SpookyGhosts, list("ghost","shade","shade2","ghost-narsie","hor
 	var/mob_detail
 	for(var/mob/M in the_turf)
 		if(M.invisibility)
-			if(see_ghosts && istype(M,/mob/dead/observer))
+			if(see_ghosts && isobserver(M))
 				var/mob/dead/observer/O = M
 				if(O.orbiting_uid)
 					continue

code/modules/paperwork/silicon_photography.dm

@@ -151,10 +151,10 @@
 	deletepicture(src)
 
 /obj/item/camera/siliconcam/proc/getsource()
-	if(istype(src.loc, /mob/living/silicon/ai))
+	if(isAI(loc))
 		return src
 
-	var/mob/living/silicon/robot/C = src.loc
+	var/mob/living/silicon/robot/C = loc
 	var/obj/item/camera/siliconcam/Cinfo
 	if(C.connected_ai)
 		Cinfo = C.connected_ai.aiCamera