Changing changeling (Refactor) (#17749)

* Begin antag component

* Initial changeling move

* Slow...And...Steady...

* Initial

* remove  toworld testing

* More adjustments

* Update absorb.dm

Changelings get a genetic point per person absorbed

* Fixes losing your markings

* wa

* Update modularchangling.dm

* BETTER LING

WITH TGUI

* Gives all stings a global 1 second cd

Need to come up with a better way for this.

* snake_case

* Update epinephrine_overdose.dm

* Update changeling.dm

* Absorption/digestion absorbs people

Also disabled death sting because gtfo with that, it's unfun for everyone involved.

* prey ling

also DELETES death sting...It didn't even KILL properly

* fixes EMP shriek

* Update vorestation.dme

* Ling

* Unfat sting lowers nutrition more

* Update visible_camouflage.dm

* Update visible_camouflage.dm

* Changeling blades NOT embed

* Armblade fix

* Changeling spacesuit free

* Updates the armor

* Updates

* awa

* More

* Update blind_sting.dm

* Update blind_sting.dm

* Update boost_range.dm

* More adjustments

* Update _reagents.dm

* Update bioelectrogenesis.dm

* more

* all done

* awa

* shhh

* Update visible_camouflage.dm

* Update visible_camouflage.dm

* Update visible_camouflage.dm

* decon

* gets rid of AB+ blood

* Blood rejection and better checks

* changeling holder

* proper del

* Changeling lock

* Stops bodytheft

* yeah

* its reviving time

* Lets them shapeshift

* ah

* check

* Update negative.dm

* Update examine.dm

code/game/objects/items/devices/scanners/sleevemate.dm

@@ -297,6 +297,10 @@ var/global/mob/living/carbon/human/dummy/mannequin/sleevemate_mob
 			if(H.resleeve_lock && stored_mind.loaded_from_ckey != H.resleeve_lock)
 				to_chat(usr,span_warning("\The [H] is protected from impersonation!"))
 				return
+			//Changeling bodies. Only changelings can be put in them.
+			if(H.changeling_locked && !is_changeling(stored_mind))
+				to_chat(usr,span_warning("\The [H] is too complex to put this mind into!"))
+				return
 
 		usr.visible_message(span_warning("[usr] begins uploading someone's mind into [target]!"),span_notice("You begin uploading a mind into [target]!"))
 		if(do_after(usr,35 SECONDS,target))