Implement copier, an item that copies the value displayed by other items

src/Dodge/Data/Item/Combine.hs

@@ -25,7 +25,7 @@ data ItemType
     | MAPPER
     | DROPPER InventoryPathing
     | CLICKER InventoryPathing
-    | COPIER InventoryPathing
+    | COPIER {_ibtPathing :: InventoryPathing}
     | UGATE
     | BGATE
     | INTROSCAN {_ibtIntroScanType :: IntroScanType}

src/Dodge/Data/Item/Effect.hs

@@ -29,6 +29,7 @@ data ItInvEffect
     | EffectWhileAttached ItInvEffect
     | ItemUseToggle BlBl
     | ItemCancelExamineInventory
+    | ItemCopierUpdate
     deriving (Eq, Ord, Show, Read) --Generic, Flat)
 
 data ItDropEffect = NoDropEffect

src/Dodge/Data/Item/Use.hs

@@ -43,6 +43,7 @@ data ItemUse
     | UseAttach {_uaParams :: AttachParams}
     | UseInt {_uInt :: Int}
     | UseNothing
+    | UseValue {_uValue :: Either Int String}
     | UseScope {_uScope :: Scope}
     | UseBulletMod {_ubMod :: BulletMod}
     | UseToggle {_useToggle :: Bool}