Replace explicit z-level checks with defines

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

@@ -422,7 +422,7 @@ All effects don't start immediately, but rather get worse over time; the rate is
 		if(drunkenness >= 91)
 			adjustBrainLoss(0.4, 60)
 			if(prob(20) && !stat)
-				if(SSshuttle.emergency.mode == SHUTTLE_DOCKED && (z in GLOB.station_z_levels)) //QoL mainly
+				if(SSshuttle.emergency.mode == SHUTTLE_DOCKED && is_station_level(z)) //QoL mainly
 					to_chat(src, "<span class='warning'>You're so tired... but you can't miss that shuttle...</span>")
 				else
 					to_chat(src, "<span class='warning'>Just a quick nap...</span>")

code/modules/mob/living/living.dm

@@ -774,9 +774,9 @@
 	var/turf/T = get_turf(src)
 	if(!T)
 		return 0
-	if(T.z == ZLEVEL_CENTCOM) //dont detect mobs on centcom
+	if(is_centcom_level(T.z)) //dont detect mobs on centcom
 		return 0
-	if(T.z >= ZLEVEL_SPACEMAX)
+	if(is_away_level(T.z))
 		return 0
 	if(user != null && src == user)
 		return 0

code/modules/mob/living/simple_animal/hostile/hostile.dm

@@ -479,6 +479,25 @@ mob/living/simple_animal/hostile/proc/DestroySurroundings() // for use with mega
 
 /mob/living/simple_animal/hostile/consider_wakeup()
 	..()
+<<<<<<< HEAD
 	if(AIStatus == AI_IDLE && FindTarget(ListTargets(), 1))
+=======
+	var/list/tlist
+	var/turf/T = get_turf(src)
+
+	if (!T)
+		return
+
+	if (!length(SSmobs.clients_by_zlevel[T.z])) // It's fine to use .len here but doesn't compile on 511
+		toggle_ai(AI_Z_OFF)
+		return
+
+	if (isturf(T) && !is_station_level(T.z))
+		tlist = ListTargetsLazy(T.z)
+	else
+		tlist = ListTargets()
+
+	if(AIStatus == AI_IDLE && FindTarget(tlist, 1))
+>>>>>>> f2dbe5c... Replace explicit z-level checks with defines (#33829)
 		toggle_ai(AI_ON)
 

code/modules/mob/living/simple_animal/hostile/megafauna/blood_drunk_miner.dm

@@ -114,7 +114,11 @@ Difficulty: Medium
 		if(L.stat == DEAD)
 			visible_message("<span class='danger'>[src] butchers [L]!</span>",
 			"<span class='userdanger'>You butcher [L], restoring your health!</span>")
+<<<<<<< HEAD
 			if(!(z in GLOB.station_z_levels && !client)) //NPC monsters won't heal while on station
+=======
+			if(!is_station_level(z) || client) //NPC monsters won't heal while on station
+>>>>>>> f2dbe5c... Replace explicit z-level checks with defines (#33829)
 				if(guidance)
 					adjustHealth(-L.maxHealth)
 				else
@@ -163,7 +167,7 @@ Difficulty: Medium
 //  do not take my touching of it to be endorsement of it. ~mso
 /mob/living/simple_animal/hostile/megafauna/blood_drunk_miner/proc/quick_attack_loop()
 	while(!QDELETED(target) && next_move <= world.time) //this is done this way because next_move can change to be sooner while we sleep.
-		stoplag(1) 
+		stoplag(1)
 	sleep((next_move - world.time) * 1.5) //but don't ask me what the fuck this is about
 	if(QDELETED(target))
 		return

code/modules/mob/living/simple_animal/hostile/megafauna/megafauna.dm

@@ -105,7 +105,11 @@
 	visible_message(
 		"<span class='danger'>[src] devours [L]!</span>",
 		"<span class='userdanger'>You feast on [L], restoring your health!</span>")
+<<<<<<< HEAD
 	if(!(z in GLOB.station_z_levels && !client)) //NPC monsters won't heal while on station
+=======
+	if(!is_station_level(z) || client) //NPC monsters won't heal while on station
+>>>>>>> f2dbe5c... Replace explicit z-level checks with defines (#33829)
 		adjustBruteLoss(-L.maxHealth/2)
 	L.gib()