Removes the ventcrawl verb, all ventcrawlers are still ventcrawlers and can use ventcrawling with the alt click. This is simutaniously less buggy and far easier to do on the fly.

The meat of ventcrawling is now stored in the vent pump, meaning anything can ventcrawl if it has ventcrawling on.

Ventcrawling 0 is no crawling, Ventcrawling 1 is naked crawling, Ventcrawling 2 and above is always crawling.

Yes you can var edit humans to be able to ventcrawl with this, great if you want to reenact diehard!

Simple animals that logically should fit in a vent can now ventcrawl. Note that this only is relevent for player controlled simple animals (staff of change/badminry), it won't be used by the mob AI.

code/ATMOSPHERICS/components/unary/vent_pump.dm

@@ -322,14 +322,77 @@
 	return
 
 /*
-	Alt-click to ventcrawl - Monkeys, aliens, and slimes
-	This is a little buggy but somehow that just seems to plague ventcrawl.
-	I am sorry, I don't know why.
+	Alt-click to ventcrawl
 */
-/obj/machinery/atmospherics/unary/vent_pump/AltClick(var/mob/living/carbon/ML)
-	if(istype(ML))
-		var/list/ventcrawl_verbs = list(/mob/living/carbon/monkey/verb/ventcrawl, /mob/living/carbon/alien/verb/ventcrawl, /mob/living/carbon/slime/verb/ventcrawl)
-		if(length(ML.verbs & ventcrawl_verbs)) // alien queens have this removed, an istype would be complicated
-			ML.handle_ventcrawl(src)
-			return
-	..()
+/obj/machinery/atmospherics/unary/vent_pump/AltClick(var/mob/living/L)
+	if(!L.ventcrawler || !isliving(L) || !Adjacent(L))
+		return
+	if(L.stat)
+		L << "You must be conscious to do this!"
+		return
+	if(L.lying)
+		L << "You can't vent crawl while you're stunned!"
+		return
+	if(welded)
+		L << "That vent is welded shut."
+		return
+
+	/*else
+		for(var/obj/machinery/atmospherics/unary/vent_pump/v in range(1,src))
+			if(!v.welded)
+				if(v.Adjacent(src))
+					vent_found = v*/
+
+	if(!network || !network.normal_members.len)
+		L << "This vent is not connected to anything."
+		return
+
+	var/list/vents = list()
+	for(var/obj/machinery/atmospherics/unary/vent_pump/temp_vent in network.normal_members)
+		if(temp_vent.welded)
+			continue
+		if(temp_vent in loc)
+			continue
+		var/turf/T = get_turf(temp_vent)
+
+		if(!T || T.z != loc.z)
+			continue
+
+		var/i = 1
+		var/index = "[T.loc.name]\[[i]\]"
+		while(index in vents)
+			i++
+			index = "[T.loc.name]\[[i]\]"
+		vents[index] = temp_vent
+	if(!vents.len)
+		L << "<span class='warning'> There are no available vents to travel to, they could be welded. </span>"
+		return
+
+	var/obj/selection = input(L,"Select a destination.", "Duct System") as null|anything in sortAssoc(vents)
+	if(!selection)	return
+
+	if(!Adjacent(L))
+		return
+	if(iscarbon(L) && L.ventcrawler < 2) // lesser ventcrawlers can't bring items
+		for(var/obj/item/carried_item in L.contents)
+			if(!istype(carried_item, /obj/item/weapon/implant))//If it's not an implant or a facehugger
+				L << "<span class='warning'> You can't be carrying items or have items equipped when vent crawling!</span>"
+				return
+
+	var/obj/machinery/atmospherics/unary/vent_pump/target_vent = vents[selection]
+	if(!target_vent)
+		return
+
+	for(var/mob/O in viewers(L, null))
+		O.show_message(text("<B>[L] scrambles into the ventillation ducts!</B>"), 1)
+
+	for(var/mob/O in hearers(target_vent,null))
+		O.show_message("You hear something squeezing through the ventilation ducts.",2)
+
+	if(target_vent.welded)		//the vent can be welded while they scrolled through the list.
+		target_vent = src
+		L << "<span class='warning'> The vent you were heading to appears to be welded.</span>"
+	L.loc = target_vent.loc
+	var/area/new_area = get_area(loc)
+	if(new_area)
+		new_area.Entered(L)

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

@@ -11,6 +11,7 @@
 	gender = NEUTER
 	dna = null
 	faction = "alien"
+	ventcrawler = 2
 
 	var/storedPlasma = 250
 	var/max_plasma = 500

code/modules/mob/living/carbon/alien/humanoid/queen.dm

@@ -7,6 +7,7 @@
 	status_flags = CANPARALYSE
 	heal_rate = 5
 	plasma_rate = 20
+	ventcrawler = 0 //pull over that ass too fat
 
 
 /mob/living/carbon/alien/humanoid/queen/New()
@@ -22,7 +23,6 @@
 
 	real_name = src.name
 	verbs.Add(/mob/living/carbon/alien/humanoid/proc/corrosive_acid,/mob/living/carbon/alien/humanoid/proc/neurotoxin,/mob/living/carbon/alien/humanoid/proc/resin)
-	verbs -= /mob/living/carbon/alien/verb/ventcrawl
 	..()
 
 /mob/living/carbon/alien/humanoid/queen/handle_regular_hud_updates()
@@ -85,4 +85,4 @@
 	else
 		icon_state = "queen_s"
 	for(var/image/I in overlays_standing)
-		overlays += I
+		overlays += I

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

@@ -1,5 +0,0 @@
-/mob/living/carbon/alien/verb/ventcrawl() // -- TLE
-	set name = "Crawl through vent"
-	set desc = "Enter an air vent and crawl through the pipe system."
-	set category = "Alien"
-	handle_ventcrawl()

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

@@ -221,99 +221,6 @@
 
 // ++++ROCKDTBEN++++ MOB PROCS //END
 
-/mob/living/carbon/proc/handle_ventcrawl(var/obj/machinery/atmospherics/unary/vent_pump/vent_found = null) // -- TLE -- Merged by Carn
-	if(stat)
-		src << "You must be conscious to do this!"
-		return
-	if(lying)
-		src << "You can't vent crawl while you're stunned!"
-		return
-
-	if(vent_found) // one was passed in, probably from vent/AltClick()
-		if(vent_found.welded)
-			src << "That vent is welded shut."
-			return
-		if(!vent_found.Adjacent(src))
-			return // don't even acknowledge that
-	else
-		for(var/obj/machinery/atmospherics/unary/vent_pump/v in range(1,src))
-			if(!v.welded)
-				if(v.Adjacent(src))
-					vent_found = v
-	if(!vent_found)
-		src << "You'll need a non-welded vent to crawl into!"
-		return
-
-	if(!vent_found.network || !vent_found.network.normal_members.len)
-		src << "This vent is not connected to anything."
-		return
-
-	var/list/vents = list()
-	for(var/obj/machinery/atmospherics/unary/vent_pump/temp_vent in vent_found.network.normal_members)
-		if(temp_vent.welded)
-			continue
-		if(temp_vent in loc)
-			continue
-		var/turf/T = get_turf(temp_vent)
-
-		if(!T || T.z != loc.z)
-			continue
-
-		var/i = 1
-		var/index = "[T.loc.name]\[[i]\]"
-		while(index in vents)
-			i++
-			index = "[T.loc.name]\[[i]\]"
-		vents[index] = temp_vent
-	if(!vents.len)
-		src << "\red There are no available vents to travel to, they could be welded."
-		return
-
-	var/obj/selection = input("Select a destination.", "Duct System") as null|anything in sortAssoc(vents)
-	if(!selection)	return
-
-	if(!vent_found.Adjacent(src))
-		src << "Never mind, you left."
-		return
-
-	for(var/obj/item/carried_item in contents)//If the monkey got on objects.
-		if( !istype(carried_item, /obj/item/weapon/implant) && !istype(carried_item, /obj/item/clothing/mask/facehugger) )//If it's not an implant or a facehugger
-			src << "\red You can't be carrying items or have items equipped when vent crawling!"
-			return
-	if(isslime(src))
-		var/mob/living/carbon/slime/S = src
-		if(S.Victim)
-			src << "\red You'll have to let [S.Victim] go or finish eating \him first."
-			return
-
-	var/obj/machinery/atmospherics/unary/vent_pump/target_vent = vents[selection]
-	if(!target_vent)
-		return
-
-	for(var/mob/O in viewers(src, null))
-		O.show_message(text("<B>[src] scrambles into the ventillation ducts!</B>"), 1)
-	loc = target_vent
-
-	var/travel_time = round(get_dist(loc, target_vent.loc) / 2)
-
-	spawn(travel_time)
-
-		if(!target_vent)	return
-		for(var/mob/O in hearers(target_vent,null))
-			O.show_message("You hear something squeezing through the ventilation ducts.",2)
-
-		sleep(travel_time)
-
-		if(!target_vent)	return
-		if(target_vent.welded)			//the vent can be welded while alien scrolled through the list or travelled.
-			target_vent = vent_found 	//travel back. No additional time required.
-			src << "\red The vent you were heading to appears to be welded."
-		loc = target_vent.loc
-		var/area/new_area = get_area(loc)
-		if(new_area)
-			new_area.Entered(src)
-
-
 /mob/living/carbon/clean_blood()
 	if(ishuman(src))
 		var/mob/living/carbon/human/H = src
@@ -553,4 +460,4 @@ var/const/GALOSHES_DONT_HELP = 8
 	loc.handle_slip(src, s_amount, w_amount, O, lube)
 
 /mob/living/carbon/fall(var/forced)
-    loc.handle_fall(src, forced)//it's loc so it doesn't call the mob's handle_fall which does nothing
+    loc.handle_fall(src, forced)//it's loc so it doesn't call the mob's handle_fall which does nothing

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

@@ -5,6 +5,7 @@
 	pass_flags = PASSTABLE
 	voice_message = "skree!"
 	say_message = "hums"
+	ventcrawler = 2
 	var/is_adult = 0
 
 	layer = 5

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

@@ -225,13 +225,4 @@
 		else
 			src << "<i>I am not ready to reproduce yet...</i>"
 	else
-		src << "<i>I am not old enough to reproduce yet...</i>"
-
-
-
-/mob/living/carbon/slime/verb/ventcrawl()
-	set name = "Crawl through Vent"
-	set desc = "Enter an air vent and crawl through the pipe system."
-	set category = "Slime"
-	if(Victim)	return
-	handle_ventcrawl()
+		src << "<i>I am not old enough to reproduce yet...</i>"

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

@@ -8,6 +8,7 @@
 	gender = NEUTER
 	pass_flags = PASSTABLE
 	update_icon = 0		///no need to call regenerate_icon
+	ventcrawler = 1
 
 /mob/living/carbon/monkey/New()
 	create_reagents(1000)

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

@@ -1,5 +0,0 @@
-/mob/living/carbon/monkey/verb/ventcrawl()
-	set name = "Crawl through Vent"
-	set desc = "Enter an air vent and crawl through the pipe system."
-	set category = "Monkey"
-	handle_ventcrawl()

code/modules/mob/living/living_defines.dm

@@ -35,3 +35,5 @@
 
 	var/on_fire = 0 //The "Are we on fire?" var
 	var/fire_stacks = 0 //Tracks how many stacks of fire we have on, max is usually 20
+
+	var/ventcrawler = 0 //0 No vent crawling, 1 vent crawling in the nude, 2 vent crawling always

code/modules/mob/living/simple_animal/friendly/crab.dm

@@ -16,6 +16,7 @@
 	response_harm   = "stomps"
 	stop_automated_movement = 1
 	friendly = "pinches"
+	ventcrawler = 2
 	var/obj/item/inventory_head
 	var/obj/item/inventory_mask
 

code/modules/mob/living/simple_animal/friendly/farm_animals.dm

@@ -166,6 +166,7 @@
 	response_harm   = "kicks"
 	attacktext = "kicks"
 	health = 1
+	ventcrawler = 2
 	var/amount_grown = 0
 	pass_flags = PASSTABLE | PASSGRILLE
 
@@ -206,6 +207,7 @@ var/global/chicken_count = 0
 	response_harm   = "kicks"
 	attacktext = "kicks"
 	health = 10
+	ventcrawler = 2
 	var/eggsleft = 0
 	var/body_color
 	pass_flags = PASSTABLE

code/modules/mob/living/simple_animal/friendly/lizard.dm

@@ -13,4 +13,5 @@
 	melee_damage_upper = 2
 	response_help  = "pets"
 	response_disarm = "shoos"
-	response_harm   = "stomps on"
+	response_harm   = "stomps on"
+	ventcrawler = 2

code/modules/mob/living/simple_animal/friendly/mouse.dm

@@ -18,6 +18,7 @@
 	response_disarm = "gently pushes aside"
 	response_harm   = "splats"
 	density = 0
+	ventcrawler = 2
 	var/body_color //brown, gray and white, leave blank for random
 
 /mob/living/simple_animal/mouse/New()

code/modules/mob/living/simple_animal/friendly/slime.dm

@@ -12,6 +12,7 @@
 	response_disarm = "shoos"
 	response_harm   = "stomps on"
 	emote_see = list("jiggles", "bounces in place")
+	ventcrawler = 2
 	var/colour = "grey"
 
 /mob/living/simple_animal/slime/Bump(atom/movable/AM as mob|obj, yes)

code/modules/mob/living/simple_animal/friendly/tomato.dm

@@ -12,4 +12,5 @@
 	response_help  = "prods"
 	response_disarm = "pushes aside"
 	response_harm   = "smacks"
-	harm_intent_damage = 5
+	harm_intent_damage = 5
+	ventcrawler = 2

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

@@ -34,6 +34,7 @@
 	var/busy = 0
 	pass_flags = PASSTABLE
 	move_to_delay = 6
+	ventcrawler = 2
 
 //nursemaids - these create webs and eggs
 /mob/living/simple_animal/hostile/giant_spider/nurse

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

@@ -22,6 +22,7 @@
 	stat_attack = 2
 	mouse_opacity = 1
 	speed = 1
+	ventcrawler = 2
 	var/powerlevel = 0 //Tracks our general strength level gained from eating other shrooms
 	var/bruised = 0 //If someone tries to cheat the system by attacking a shroom to lower its health, punish them so that it wont award levels to shrooms that eat it
 	var/recovery_cooldown = 0 //So you can't repeatedly revive it during a fight

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

@@ -23,6 +23,7 @@
 	faction = "carp"
 	attack_sound = 'sound/weapons/bite.ogg'
 	environment_smash = 0
+	ventcrawler = 2
 
 
 	//Space bats need no air to fly in.