diff --git a/game/components.py b/game/components.py
index f8f3fcb..a75b35b 100644
--- a/game/components.py
+++ b/game/components.py
@@ -22,22 +22,28 @@ class Position:
         match direction:
             case Position(x, y):
                 return self.__class__(self.x + x, self.y + y)
-        x, y = direction
-        return self.__class__(self.x + x, self.y + y)
+            case (x, y):
+                return self.__class__(self.x + x, self.y + y)
+        raise NotImplementedError
+
     def __sub__(self, direction: tuple[int, int] | Position) -> Self:
         match direction:
             case Position(x, y):
                 return self.__class__(self.x - x, self.y - y)
-        x, y = direction
-        return self.__class__(self.x - x, self.y - y)
+            case (x, y):
+                return self.__class__(self.x - x, self.y - y)
+        raise NotImplementedError
+
     def mod(self, other: tuple[int,int] | Position | int) -> Self:
         match other:
             case Position(x,y):
                 return self.__class__(self.x//x, self.y//y)
             case int(x):
                 return self.__class__(self.x//x, self.y//x)
-        x,y = other
-        return self.__class__(self.x//x, self.y//y)
+            case (x, y):
+                return self.__class__(self.x//x, self.y//y)
+        raise NotImplementedError
+
     def length(self):
         return math.sqrt(self.x**2+self.y**2)