COMPLETELY FUCKING REFACTORS TOOL CHECKING CODE

dear FUCKING GOD why was it like this, it hurts soooo bad DDDD:

code/game/objects/items/stacks/medical.dm

@@ -146,7 +146,7 @@
 
 
 /obj/item/stack/medical/gauze/attackby(obj/item/I, mob/user, params)
-	if(istype(I, /obj/item/wirecutters) || I.is_sharp())
+	if(I.tool_behavior == TOOL_WIRECUTTER || I.is_sharp())
 		if(get_amount() < 2)
 			to_chat(user, "<span class='warning'>You need at least two gauzes to do this!</span>")
 			return

code/game/objects/items/stacks/rods.dm

@@ -40,7 +40,7 @@ GLOBAL_LIST_INIT(rod_recipes, list ( \
 		icon_state = "rods"
 
 /obj/item/stack/rods/attackby(obj/item/W, mob/user, params)
-	if(istype(W, /obj/item/weldingtool))
+	if(W.tool_behavior == TOOL_WELDER)
 		if(get_amount() < 2)
 			to_chat(user, "<span class='warning'>You need at least two rods to do this!</span>")
 			return

code/game/objects/items/stacks/tiles/light.dm

@@ -20,7 +20,7 @@
 		state = 0 //fine
 
 /obj/item/stack/tile/light/attackby(obj/item/O, mob/user, params)
-	if(istype(O, /obj/item/crowbar))
+	if(O.tool_behavior == TOOL_CROWBAR)
 		new/obj/item/stack/sheet/metal(user.loc)
 		amount--
 		new/obj/item/stack/light_w(user.loc)

code/game/objects/items/stacks/tiles/tile_types.dm

@@ -20,7 +20,7 @@
 
 /obj/item/stack/tile/attackby(obj/item/W, mob/user, params)
 
-	if (istype(W, /obj/item/weldingtool))
+	if (W.tool_behavior == TOOL_WELDER)
 		if(get_amount() < 4)
 			to_chat(user, "<span class='warning'>You need at least four tiles to do this!</span>")
 			return