Gets rid of hasvar usage and moves up some vars (#18262)

* Gets rid of hasvar usage

* thiiis

* moves damtype to /obj/item

* throwing

* Move vars moved

* matter as well

Pretty much only used for the robot lathe and when crafting...When you could only smelt down obj/item for its materials

* Update floor_light.dm

* exploitable

* this can be moved up...

* move persist to /item

you can't ever place /obj in storage anyway...It would imply you can store the supermatter, which I think we don't want.

* gets rid of being_used

I added this for xenoarch, that was a mistake

* move these

* move these to the base file

* Makes floorlight autolathe recipe not shit

* Update floor_light.dm

* Update floor_light.dm

* Mechs no longer gib when hitting things

---------

Co-authored-by: Selis <12716288+ItsSelis@users.noreply.github.com>

code/game/objects/structures/low_wall.dm

@@ -263,8 +263,8 @@
 	if(ismob(AM)) // All mobs have a multiplier and a size according to mob_defines.dm
 		var/mob/I = AM
 		tforce = I.mob_size * (speed/THROWFORCE_SPEED_DIVISOR)
-	else
-		var/obj/O = AM
+	else if(isitem(AM))
+		var/obj/item/O = AM
 		tforce = O.throwforce * (speed/THROWFORCE_SPEED_DIVISOR)
 	if (tforce < 15)
 		return