I am designing a tic-tac-toe game using pygame, but for some reason my inner while loop doesn't break and the second inner loop never gets executed.
def main():
"""Main game loop."""
font = pygame.font.SysFont(None, 48) # Font for messages
while True:
player = "X" # Starting player
game_board = Board() # Create a new game board
while True:
for event in pygame.event.get(): # Event handling
if event.type == pygame.QUIT: # Check for quit event
pygame.quit()
sys.exit()
if event.type == pygame.MOUSEBUTTONDOWN: # Check for mouse click
mouse_x, mouse_y = pygame.mouse.get_pos()
row = mouse_y // CELL_SIZE
col = mouse_x // CELL_SIZE
# Check for valid input
if row in [0, 1, 2] and col in [0, 1, 2]:
if game_board.make_move(row, col, player):
click_sound.play() # Play click sound
# Draw the player's symbol
draw_x(screen, row, col) if player == "X" else draw_o(screen, row, col)
# Check for a winner
winner = game_board.check_winner()
if winner is not None:
draw_winning_message(winner) # Draw the winning message
pygame.display.flip() # Update the display to show the message
win_sound.play()
winning_animation(winner) # Call winning animation
break # Exit the inner loop
# Check for a draw
if game_board.check_draw():
draw_sound.play() # Play draw sound
draw_draw_message() # Draw the draw message
pygame.display.flip() # Update the display to show the message
draw_animation() # Call draw animation
break # Exit the inner loop
# Switch players
player = "O" if player == "X" else "X"
# Clear the screen and redraw the grid
screen.fill(BG_COLOR)
draw_grid()
game_board.display_symbols() # Draw all symbols from the game board
pygame.display.flip() # Update the display
# Now we are either breaking because of a win or a draw
while True: # Loop until a valid option is chosen
screen.fill(BG_COLOR) # Clear the screen
game_board.display_symbols() # Redraw symbols
# Draw options for restarting or exiting
draw_options() # Draw the options on the screen
draw_text("Press R to Restart or E to Exit", font, (255, 255, 255), screen, WIDTH // 2, HEIGHT - 50)
pygame.display.flip() # Update the display
for event in pygame.event.get(): # Handle events
if event.type == pygame.QUIT: # Check for quit event
pygame.quit()
sys.exit()
if event.type == pygame.KEYDOWN: # Check for key presses
if event.key == pygame.K_r: # Restart the game
break # Exit the loop to restart the game
elif event.key == pygame.K_e: # Exit the game
pygame.quit() # Ensure Pygame quits properly
sys.exit()
The break function itself seems to be working. I tried break at the end of the first inner loop and it worked, but when it is in the if function it doesn't work.
The break statement is used to break out of only the inner-most loop in Python (and most other languages).
This is why the below code works:
while True:
for event in pygame.event.get():
...
break
But this doesn't
while True:
for event in pygame.event.get():
...
break # breaks out of only for loop
I would restructure your code by defining another boolean variable to check whether you need to move on to the next piece of code or not.
continue_loop = True
while continue_loop:
for event in pygame.event.get():
if condition:
...
continue_loop = False
break
...