Add state arguments to Game methods

ttt_game.py

@@ -35,9 +35,9 @@ class TTTGame:
         "Returns a list of the indices of empty spaces"
         return [index for index in range(9) if state["board"][index] == '-']
 
-    def is_over(self):
+    def is_over(self, state):
         "Checks whether the game is over."
-        return self.board_is_full() or self.check_winner('X') or self.check_winner('O')
+        return self.board_is_full(state) or self.check_winner(state, 'X') or self.check_winner(state, 'O')
 
     def get_reward(self, state):
         """Determines the reward associated with reaching this state.
@@ -73,13 +73,16 @@ class TTTGame:
         "Checks whether a move is valid"
         return move in self.get_valid_moves()
 
-    def board_is_full(self):
+    def board_is_full(state, self):
         "Checks whether all the spaces in the board are occupied."
-        for space in self.state["board"]:
+        for space in state["board"]:
             if space == '-':
                 return False
         return True
 
-    def check_winner(self, symbol):
+    def check_winner(self, state, symbol):
         "Checks whether the player with `symbol` has won the game."
         return False
+
+
+