def start(self):
"""Sets up game board, starts a tic tac toe game,
and a new AI if one doesn't exist. AI makes first move if
playing as X
"""
self.set_game_board()
self.game = TicTacToe()
self.game.start()
if not self.ai:
self.ai = TicTacToeAI()
if self.ai_symbol == 'x':
self.ai_action()
class TicTacToeGUI:
ai = None
def __init__(self, master):
# Initial Frame
self.frame = Frame(master)
self.frame.pack(fill="both", expand=True)
# Board canvas
self.canvas = Canvas(self.frame, width=300, height=300)
# Symbol selection buttons
self.x_button = Button(self.frame, text='Play as X', height=4,
command=self.set_player_x, bg='white',
fg='black')
self.o_button = Button(self.frame, text='Play as O', height=4,
command=self.set_player_o, bg='white',
fg='red')
# Game start button and info box
self.start_button = Button(self.frame, text="START", height=4,
command=self.start, bg='white', fg='purple')
self.info_box = Label(self.frame, text='Tic Tac Toe Game', height=4,
bg='white', fg='blue')
self.clean_game_board()
def start(self):
"""Sets up game board, starts a tic tac toe game,
and a new AI if one doesn't exist. AI makes first move if
playing as X
"""
self.set_game_board()
self.game = TicTacToe()
self.game.start()
if not self.ai:
self.ai = TicTacToeAI()
if self.ai_symbol == 'x':
self.ai_action()
def _board(self):
"""Draws tic tac toe board"""
self.canvas.create_rectangle(0, 0, 300, 300, outline="black")
self.canvas.create_rectangle(100, 300, 200, 0, outline="black")
self.canvas.create_rectangle(0, 100, 300, 200, outline="black")
def user_action(self, event):
"""Attempts to take action that matches user click. If the move is valid,
then calls the AI to make the next move. If not, displays the error.
"""
move_x = event.x // 100
move_y = event.y // 100
move_result = self.game.update(self.player_symbol, (move_x, move_y))
if move_result == "Success":
board_x = (200 * move_x + 100) / 2
board_y = (200 * move_y + 100) / 2
if self.player_symbol == 'x':
self.draw_x(board_x, board_y)
else:
self.draw_o(board_x, board_y)
if not self.completed():
# Wait a bit before calling the ai, for visual style
self.frame.after(500, self.ai_action)
else:
self.info_box['text'] = move_result
def ai_action(self):
"""Gets the next move from the AI based on current game state,
and plays.
"""
state = self.game.get_board()
move = self.ai.get_move(state)
move_result = self.game.update(self.ai_symbol, move)
if move_result == "Success":
board_x = (200 * move[0] + 100) / 2
board_y = (200 * move[1] + 100) / 2
if self.ai_symbol == 'x':
self.draw_x(board_x, board_y)
else:
self.draw_o(board_x, board_y)
self.completed()
def completed(self):
"""Checks the game status. If completed, displays the result,
and asks whether the player would like to start another game.
"""
status = self.game.done()
if status == 'e':
return False
message = "Click to start a new game."
if status == 't':
message = "Tie game. " + message
else:
message = "Player " + status.upper() + " has won. " + message
self.info_box.pack_forget()
self.start_button.pack(fill="both", expand=True)
self.start_button["text"] = message
self.start_button["command"] = self.clean_game_board
def draw_x(self, x, y):
self.canvas.create_line(x + 20, y + 20, x - 20, y - 20, width=4,
fill="black")
self.canvas.create_line(x - 20, y + 20, x + 20, y - 20, width=4,
fill="black")
def draw_o(self, x, y):
self.canvas.create_oval(x + 25, y + 25, x - 25, y - 25, width=4,
outline="red")
def set_game_board(self):
"""Hides game start buttons, reveals the game board and info box."""
self.start_button.pack_forget()
self.x_button.pack_forget()
self.o_button.pack_forget()
self.canvas.delete(ALL)
self.canvas.pack(fill="both", expand=True)
self.info_box.pack(fill="both", expand=True)
self.canvas.bind("<ButtonPress-1>", self.user_action)
self._board()
def clean_game_board(self):
"""Hides game board and label, reveals game start buttons."""
self.canvas.pack_forget()
self.info_box.pack_forget()
self.start_button.pack_forget()
self.x_button.pack(fill="both", expand=True)
self.o_button.pack(fill="both", expand=True)
def set_player_x(self):
self.player_symbol = 'x'
self.ai_symbol = 'o'
self.start()
def set_player_o(self):
self.player_symbol = 'o'
self.ai_symbol = 'x'
self.start()