refactors clickcatchers/parallax/fullsceren (#15460)

* :)

* that

* move those there

* refactor that too

* wew

* stuff

* almost.

* sigh

* just need speed

* stuf

* pain

* hm

* tweaks

* that

* eh

* wack

* a

* done

* that's important

* wacky

* all that

* fixes

* typo

* that

* a

* funny

* that

* that

* woo

* help im losing my fucking mind

* okay

* fix

code/modules/mob/dead/dead.dm

@@ -126,5 +126,5 @@ INITIALIZE_IMMEDIATE(/mob/dead)
 	return ..()
 
 /mob/dead/onTransitZ(old_z,new_z)
-	..()
+	. = ..()
 	update_z(new_z)