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AlphaBeta.py
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AlphaBeta.py
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# MODULES
import pygame, sys
import numpy as np
import time
# initializes pygame
pygame.init()
# ---------
# CONSTANTS
# ---------
WIDTH = 600
HEIGHT = WIDTH
LINE_WIDTH = 6
WIN_LINE_WIDTH = 10
BOARD_ROWS = 3
BOARD_COLS = BOARD_ROWS
SQUARE_SIZE = WIDTH/BOARD_ROWS
CIRCLE_RADIUS = SQUARE_SIZE/3
CIRCLE_WIDTH = 15
CROSS_WIDTH = 25
SPACE = SQUARE_SIZE/4
RED = (235, 47, 6)
BG_COLOR = (72, 84, 96)
LINE_COLOR = (23, 145, 135)
CIRCLE_COLOR = (255, 211, 42)
CROSS_COLOR = (186, 220, 88)
# ---------
# VARIABLES
# ---------
player = 1
game_over = False
# ------
# SCREEN
# ------
screen = pygame.display.set_mode( (WIDTH, HEIGHT) )
pygame.display.set_caption('TIC TAC TOE AI 3v3')
screen.fill( BG_COLOR )
# -------------
# CONSOLE BOARD
# -------------
board = np.zeros( (BOARD_ROWS, BOARD_COLS) )
# ---------
# FUNCTIONS
# ---------
def draw_lines():
for i in range(1,BOARD_ROWS):
# Ngang
pygame.draw.line( screen, LINE_COLOR, (0, SQUARE_SIZE*i), (WIDTH, SQUARE_SIZE*i), LINE_WIDTH )
for i in range(1,BOARD_COLS):
# Dọc
pygame.draw.line( screen, LINE_COLOR, (i * SQUARE_SIZE, 0), (i * SQUARE_SIZE, HEIGHT), LINE_WIDTH )
def draw_figures():
for row in range(BOARD_ROWS):
for col in range(BOARD_COLS):
if board[row][col] == 2:
pygame.draw.circle( screen, CIRCLE_COLOR, (int( col * SQUARE_SIZE + SQUARE_SIZE//2 ), int( row * SQUARE_SIZE + SQUARE_SIZE//2 )), CIRCLE_RADIUS, CIRCLE_WIDTH )
elif board[row][col] == 1:
pygame.draw.line( screen, CROSS_COLOR, (col * SQUARE_SIZE + SPACE, row * SQUARE_SIZE + SQUARE_SIZE - SPACE), (col * SQUARE_SIZE + SQUARE_SIZE - SPACE, row * SQUARE_SIZE + SPACE), CROSS_WIDTH )
pygame.draw.line( screen, CROSS_COLOR, (col * SQUARE_SIZE + SPACE, row * SQUARE_SIZE + SPACE), (col * SQUARE_SIZE + SQUARE_SIZE - SPACE, row * SQUARE_SIZE + SQUARE_SIZE - SPACE), CROSS_WIDTH )
def mark_square(row, col, player):
board[row][col] = player
# print ("----------------------------------------------------")
# print("Player " + str(player) + " marked square : (" + str(row) + "," + str(col) + ")")
# print(board)
# print ("----------------------------------------------------")
def available_square(row, col):
return board[row][col] == 0
def is_board_full():
for row in range(BOARD_ROWS):
for col in range(BOARD_COLS):
if board[row][col] == 0:
return False
return True
def check_win(player):
# Dọc
for col in range(BOARD_COLS):
if board[0][col] == player and board[1][col] == player and board[2][col] == player:
draw_vertical_winning_line(col, player)
return True
# Ngang
for row in range(BOARD_ROWS):
if board[row][0] == player and board[row][1] == player and board[row][2] == player:
draw_horizontal_winning_line(row, player)
return True
# Chéo Phải
if board[2][0] == player and board[1][1] == player and board[0][2] == player:
draw_asc_diagonal(player)
return True
# Chéo Trái
if board[0][0] == player and board[1][1] == player and board[2][2] == player:
draw_desc_diagonal(player)
return True
return False
# =========
# Hàm vẽ đường win
# =========
def draw_vertical_winning_line(col, player):
posX = col * SQUARE_SIZE + SQUARE_SIZE//2
if player == 1:
color = CIRCLE_COLOR
elif player == 2:
color = CROSS_COLOR
pygame.draw.line( screen, color, (posX, 15), (posX, HEIGHT - 15), LINE_WIDTH )
def draw_horizontal_winning_line(row, player):
posY = row * SQUARE_SIZE + SQUARE_SIZE//2
if player == 1:
color = CIRCLE_COLOR
elif player == 2:
color = CROSS_COLOR
pygame.draw.line( screen, color, (15, posY), (WIDTH - 15, posY), WIN_LINE_WIDTH )
def draw_asc_diagonal(player):
if player == 1:
color = CIRCLE_COLOR
elif player == 2:
color = CROSS_COLOR
pygame.draw.line( screen, color, (15, HEIGHT - 15), (WIDTH - 15, 15), WIN_LINE_WIDTH )
def draw_desc_diagonal(player):
if player == 1:
color = CIRCLE_COLOR
elif player == 2:
color = CROSS_COLOR
pygame.draw.line( screen, color, (15, 15), (WIDTH - 15, HEIGHT - 15), WIN_LINE_WIDTH )
def restart():
screen.fill( BG_COLOR )
draw_lines()
for row in range(BOARD_ROWS):
for col in range(BOARD_COLS):
board[row][col] = 0
def checkWinner():
winner = None;
# Ngang
for row in range(BOARD_ROWS):
if(board[row][0]==board[row][1]==board[row][2]!=0):
winner = board[row][0]
return winner
# Dọc
for col in range(BOARD_COLS):
if(board[0][col]==board[1][col]==board[2][col]!=0):
winner = board[0][col]
return winner
# Chéo
if board[0][0]==board[1][1]==board[2][2]!=0:
winner = board[0][0]
return winner
if board[2][0]==board[1][1]==board[0][2]!=0:
winner = board[2][0]
return winner
# Hòa
for row in range(BOARD_ROWS):
for col in range(BOARD_COLS):
if board[row][col] == 0:
return None
return 0
# Tính nước đi tốt nhất cho máy
mytime = 0
def bestMove():
global mytime
start_time = time.time()
bestScore = -100000
move = None
empty_cells = [(row, col) for row in range(BOARD_ROWS) for col in range(BOARD_COLS) if board[row][col] == 0]
if not empty_cells:
return (-1, -1)
for row, col in empty_cells:
board[row][col] = 2
score = minimax(board, 0, -100000, 100000, False)
board[row][col] = 0
if score > bestScore:
bestScore = score
move = (row, col)
if move:
mark_square(move[0], move[1], 2)
draw_figures()
end_time = time.time()
elapsed_time = end_time - start_time
mytime = mytime + elapsed_time
print("Alpha_beta:time to make first move :%f"%(mytime))
return move
scores = {
1: -10,
2: 10,
0: 0
}
i = 0
def minimax(board, depth, alpha, beta, isMaximizing):
global i
i = i+1
print(i)
result = checkWinner()
if result is not None:
return scores[result]
if isMaximizing:
bestScore = -100000
for row in range(BOARD_ROWS):
for col in range(BOARD_COLS):
if board[row][col] == 0:
board[row][col] = 2
score = minimax(board, depth+1, alpha, beta, False)
board[row][col] = 0
bestScore = max(score, bestScore)
alpha = max(alpha, bestScore)
if beta <= alpha:
break
return bestScore
else:
bestScore = 100000
for row in range(BOARD_ROWS):
for col in range(BOARD_COLS):
if board[row][col] == 0:
board[row][col] = 1
score = minimax(board, depth+1, alpha, beta, True)
board[row][col] = 0
bestScore = min(score, bestScore)
beta = min(beta, bestScore)
if beta <= alpha:
break
return bestScore
draw_lines()
# --------
# MAINLOOP
# --------
while True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
sys.exit()
if event.type == pygame.MOUSEBUTTONDOWN and not game_over:
mouseX = event.pos[0] # x
mouseY = event.pos[1] # y
clicked_row = int(mouseY // SQUARE_SIZE)
clicked_col = int(mouseX // SQUARE_SIZE)
if available_square( clicked_row, clicked_col ):
player = 1
mark_square( clicked_row, clicked_col, player )
draw_figures()
if check_win( player ):
font = pygame.font.SysFont(None, 120)
text = font.render("You win", True, pygame.Color(RED))
text_rect = text.get_rect(center=(WIDTH/2, HEIGHT/2))
screen.blit(text, text_rect)
game_over = True
elif is_board_full():
font = pygame.font.SysFont(None, 120)
text = font.render("Hòa", True, pygame.Color(RED))
text_rect = text.get_rect(center=(WIDTH/2, HEIGHT/2))
screen.blit(text, text_rect)
game_over = True
else:
player = 2
draw_figures()
pygame.display.update()
bestMove()
draw_figures()
if check_win( player ):
font = pygame.font.SysFont(None, 120)
text = font.render("Máy win", True, pygame.Color(RED))
text_rect = text.get_rect(center=(WIDTH/2, HEIGHT/2))
screen.blit(text, text_rect)
game_over = True
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_r:
restart()
player = 1
game_over = False
draw_figures()
pygame.display.update()