问题描述
我目前正在使用 Minimax 算法在 Python 中开发一款无与伦比的井字游戏。在这一点上，我已经被困了几天，试图弄清楚为什么算法没有返回正确的分数或让 AI 播放的动作。在程序当前状态下，如果我在左上角执行第一个动作 (X)，则极大极小值返回的分数为 0，这似乎是正确的，因为计算机只能打平。然而，这应该适用于所有角落，并且底行的任何初始输入都返回 -1，这是不正确的。返回的最佳移动实际上也不是最佳移动。任何输入将不胜感激，提示将优先于完整答案。我在下面包含了相关代码：
#executes on odd numbered turns (AI goes second) Currently configured with print statements for debugging
def AI_Logic():
score = minimax(Board,False)
x,y = bestmove
Board[x][y] = 0
print(count)
print(bestmove)
print(score)
print(Board)
Turn += 1
def minimax(Board,Maxplayer):
global bestmove
global count
count += 1
# Checks if the board is full or if a player has won
if is_Full(Board) or has_Won(Board) == True:
# Checks for wins,if no wins exists return 0
if has_Won(Board) == False:
return 0
# If O has won,return 1
elif who_Won(Board) == 0:
return 1
# If X has won,return -1
elif who_Won(Board) == 1:
return -1
if Maxplayer == True:
maxscore = float("-inf")
for x in range(3):
for y in range(3):
if Board[x][y] == None:
Board[x][y] = 0
score = minimax(Board,False)
Board[x][y] = None
if score > maxscore:
bestmove = (x,y)
maxscore = max(maxscore,score)
return maxscore
else:
minscore = float("inf")
for x in range(3):
for y in range(3):
if Board[x][y] == None:
Board[x][y] = 1
score = minimax(Board,True)
Board[x][y] = None
minscore = min(minscore,score)
return minscore
def is_Full(Board):
if any(None in sublist for sublist in Board):
return False
else:
return True
def who_Won(Board):
global hasWon
# Checks for three of a kind in first column
if Board[0][0] == Board[1][0] and Board[0][0] != None:
if Board[1][0] == Board[2][0]:
hasWon = 1
return Board[2][0]
if Board[0][0] == Board[0][1] and Board[0][0] != None:
if Board[0][1] == Board[0][2]:
hasWon = 1
return Board[0][2]
# Checks for diag win top Left to bottom right
if Board[0][0] == Board[1][1] and Board[0][0] != None:
if Board[1][1] == Board[2][2]:
hasWon = 1
return Board[2][2]
# Checks for diag win bottom left to top right
if Board[0][2] == Board[1][1] and Board[0][2] != None:
if Board[1][1] == Board[2][0]:
hasWon = 1
return Board[2][0]
# Checks for center column win
if Board[0][1] == Board[1][1] and Board[0][1] != None:
if Board[1][1] == Board[2][1]:
hasWon = 1
return Board[2][1]
# Checks for right column win:
if Board[0][2] == Board[1][2] and Board[0][2] != None:
if Board[1][2] == Board[2][2]:
hasWon = 1
return Board[2][2]
# Checks for second row win:
if Board[1][0] == Board[1][1] and Board[1][0] != None:
if Board[1][1] == Board[1][2]:
hasWon = 1
return Board[1][2]
# Checks for third row win:
if Board[2][0] == Board[2][1] and Board[2][0] != None:
if Board[2][1] == Board[2][2]:
hasWon = 1
return Board[2][2]
def has_Won(Board):
# Checks for three of a kind in first column
if Board[0][0] == Board[1][0] and Board[0][0] != None:
if Board[1][0] == Board[2][0]:
return True
if Board[0][0] == Board[0][1] and Board[0][0] != None:
if Board[0][1] == Board[0][2]:
return True
# Checks for diag win top Left to bottom right
if Board[0][0] == Board[1][1] and Board[0][0] != None:
if Board[1][1] == Board[2][2]:
return True
# Checks for diag win bottom left to top right
if Board[0][2] == Board[1][1] and Board[0][2] != None:
if Board[1][1] == Board[2][0]:
return True
# Checks for center column win
if Board[0][1] == Board[1][1] and Board[0][1] != None:
if Board[1][1] == Board[2][1]:
return True
# Checks for right column win:
if Board[0][2] == Board[1][2] and Board[0][2] != None:
if Board[1][2] == Board[2][2]:
return True
# Checks for second row win:
if Board[1][0] == Board[1][1] and Board[1][0] != None:
if Board[1][1] == Board[1][2]:
return True
# Checks for third row win:
if Board[2][0] == Board[2][1] and Board[2][0] != None:
if Board[2][1] == Board[2][2]:
return True
return False
# Checks the position of a mouse click and draws an X/O,Appends the Board matrix with a 1 in the correct spot to reflect an X,0 to relfect O
def draw_X(x,y):
global Turn
# Checks if turn is an even number (i.e x's turn)
if Turn % 2 == 0:
# Series of statements checking the x and y pos of the mouse. Each mouse click lies in a specific Box,draw the X/O in the center of the Box,# making sure there is nothing in the Box,and not to overwrite if an X or O already exist.
if x < WIDTH / 3 and y < HEIGHT/3:
if Board[0][0] == None:
Board[0][0] = 1
WIN.blit(X,(60,60))
# Increases Turn after each executed x or O drawing
Turn += 1
elif x < WIDTH - WIDTH / 3 and y < HEIGHT/3:
if Board[0][1] == None:
Board[0][1] = 1
WIN.blit(X,(WIDTH / 3 + 60,60))
Turn += 1
elif x < WIDTH and y < HEIGHT/3:
if Board[0][2] == None:
Board[0][2] = 1
WIN.blit(X,(WIDTH - WIDTH / 3 + 60,60))
Turn += 1
elif x < WIDTH / 3 and y < HEIGHT - HEIGHT/3:
if Board[1][0] == None:
Board[1][0] = 1
WIN.blit(X,HEIGHT / 3 + 60))
Turn += 1
elif x < WIDTH - WIDTH / 3 and y < HEIGHT - HEIGHT/3:
if Board[1][1] == None:
Board[1][1] = 1
WIN.blit(X,HEIGHT / 3 + 60))
Turn += 1
elif x < WIDTH and y < HEIGHT - HEIGHT/3:
if Board[1][2] == None:
Board[1][2] = 1
WIN.blit(X,HEIGHT / 3 + 60))
Turn += 1
elif x < WIDTH / 3 and y < HEIGHT:
if Board[2][0] == None:
Board[2][0] = 1
WIN.blit(X,HEIGHT - HEIGHT / 3 + 60))
Turn += 1
elif x < WIDTH - WIDTH / 3 and y < HEIGHT:
if Board[2][1] == None:
Board[2][1] = 1
WIN.blit(X,HEIGHT - HEIGHT / 3 + 60))
Turn += 1
elif x < WIDTH and y < HEIGHT:
if Board[2][2] == None:
Board[2][2] = 1
WIN.blit(X,HEIGHT - HEIGHT / 3 + 60))
Turn += 1
# On odd number turns,O will be drawn onto the board:
else:
if x < WIDTH / 3 and y < HEIGHT/3:
if Board[0][0] == None:
Board[0][0] = 0
WIN.blit(O,60))
Turn += 1
elif x < WIDTH - WIDTH / 3 and y < HEIGHT/3:
if Board[0][1] == None:
Board[0][1] = 0
WIN.blit(O,60))
Turn += 1
elif x < WIDTH and y < HEIGHT/3:
if Board[0][2] == None:
Board[0][2] = 0
WIN.blit(O,60))
Turn += 1
elif x < WIDTH / 3 and y < HEIGHT - HEIGHT/3:
if Board[1][0] == None:
Board[1][0] = 0
WIN.blit(O,HEIGHT / 3 + 60))
Turn += 1
elif x < WIDTH - WIDTH / 3 and y < HEIGHT - HEIGHT/3:
if Board[1][1] == None:
Board[1][1] = 0
WIN.blit(O,HEIGHT / 3 + 60))
Turn += 1
elif x < WIDTH and y < HEIGHT - HEIGHT/3:
if Board[1][2] == None:
Board[1][2] = 0
WIN.blit(O,HEIGHT / 3 + 60))
Turn += 1
elif x < WIDTH / 3 and y < HEIGHT:
if Board[2][0] == None:
Board[2][0] = 0
WIN.blit(O,HEIGHT - HEIGHT / 3 + 60))
Turn += 1
elif x < WIDTH - WIDTH / 3 and y < HEIGHT:
if Board[2][1] == None:
Board[2][1] = 0
WIN.blit(O,HEIGHT - HEIGHT / 3 + 60))
Turn += 1
elif x < WIDTH and y < HEIGHT:
if Board[2][2] == None:
Board[2][2] = 0
WIN.blit(O,HEIGHT - HEIGHT / 3 + 60))
Turn += 1
# 3x3 Matrix used for game logic
Board = [[None]*3,[None]*3,[None]*3]
# Executes every frame,draws the board,checks for wins,and updates the display
def draw_Window():
draw_Board()
has_Won(Board)
pygame.display.update()
# Main Event Loop
def main():
global Turn
FPS = 60
run = True
WIN.fill((255,255,255))
clock = pygame.time.Clock()
while run:
clock.tick(FPS)
draw_Window()
# Runs the AI turn on odd numbers
if Turn % 2 != 0:
while x:
AI_Logic()
x = False
# Checks for winner
if has_Won == True:
pass
for event in pygame.event.get():
if event.type == pygame.QUIT:
run = False
# Checks if a mouse is clicked. When clicked,it records the x and y pos of the mouse and passes it through the draw_X function
if event.type == pygame.MOUSEBUTTONDOWN:
x,y = pygame.mouse.get_pos()
draw_X(x,y)
pygame.display.update()
pygame.quit()
main()
解决方法
暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！
如果你已经找到好的解决方法，欢迎将解决方案带上本链接一起发送给小编。
小编邮箱:dio#foxmail.com (将#修改为@）