Changes to protean PR (#1)

* Removes darkvision

Removes dark vision changes

* Prevents rig assimilation and allows vent crawl for small items only

Removed the ability to assimilate rigs.

Added the ability to vent crawl back, but it now checks their inventory (including inside the rig storage) for any items over pocket-size.

* Removed unnecessary exception

* 1 -> TRUE and 2 -> ITEMSIZE_SMALL

code/modules/ventcrawl/ventcrawl.dm

@@ -12,7 +12,8 @@ var/list/ventcrawl_machinery = list(
 	/obj/machinery/camera,
 	/obj/belly,
 	/obj/screen,
-	/atom/movable/emissive_blocker
+	/atom/movable/emissive_blocker,
+	/obj/item/rig/protean
 	)
 	//VOREStation Edit : added /obj/belly, to this list, CI is complaining about this in his indentation check. Added mob_headset for those with radios so there's no weirdness.
 	//mob/living/simple_mob/borer, //VORESTATION AI TEMPORARY REMOVAL REPLACE BACK IN LIST WHEN RESOLVED //VOREStation Edit
@@ -106,6 +107,29 @@ var/list/ventcrawl_machinery = list(
 			return FALSE
 	return TRUE
 
+/mob/living/simple_mob/protean_blob/ventcrawl_carry()
+	for(var/atom/A in contents)
+		if(!is_allowed_vent_crawl_item(A))
+			to_chat(src, span_warning("You can't carry \the [A] while ventcrawling!"))
+			return FALSE
+	if(humanform)
+		for(var/atom/B in humanform.get_contents())
+			if(!is_allowed_vent_crawl_item(B))
+				to_chat(src, span_warning("You can't carry \the [B] while ventcrawling!"))
+				return FALSE
+	return TRUE
+
+/mob/living/simple_mob/protean_blob/is_allowed_vent_crawl_item(var/obj/item/carried_item)
+	if((carried_item in humanform.organs) || (carried_item in humanform.internal_organs))
+		return TRUE
+	if(istype(carried_item, /obj/item/clothing/under))
+		return TRUE //Allow jumpsuits only
+	if(istype(carried_item, /obj/item))
+		var/obj/item/I = carried_item
+		if(I.w_class <= ITEMSIZE_SMALL)
+			return TRUE //Allow them to carry items that fit in pockets
+	return ..()
+
 /mob/living/AltClickOn(var/atom/A)
 	if(is_type_in_list(A,ventcrawl_machinery))
 		handle_ventcrawl(A)