A snake game code

lead_x = display_width / 2
lead_y = display_height / 2
lead_x_change = 0
lead_y_change = 0 snakeList = []
snakeLength = 1 randAppleX = round(random.randrange(0, display_width - block_size) / 10.0) * 10.0
randAppleY = round(random.randrange(0, display_height - block_size) / 10.0) * 10.0 while not gameExit: while gameOver == True: gameDisplay.fill(white) message_to_screen("Game over, press C to play again or Q to quit", red) pygame.display.update() for event in pygame.event.get(): if event.type == pygame.QUIT: gameExit = True gameOver = False if event.type == pygame.KEYDOWN: if event.key == pygame.K_q: gameExit = True gameOver = False if event.key == pygame.K_c: gameLoop() for event in pygame.event.get(): if event.type == pygame.QUIT: gameExit = True if event.type == pygame.KEYDOWN: if event.key == pygame.K_LEFT: lead_x_change = -block_size lead_y_change = 0 elif event.key == pygame.K_RIGHT: lead_x_change = block_size lead_y_change = 0 elif event.key == pygame.K_UP: lead_y_change = -block_size lead_x_change = 0 elif event.key == pygame.K_DOWN: lead_y_change = block_size lead_x_change = 0 if lead_x >= display_width or lead_x < 0 or lead_y >= display_height or lead_y < 0: gameOver = True lead_x += lead_x_change lead_y += lead_y_change gameDisplay.fill(black) pygame.draw.rect(gameDisplay, red, [randAppleX, randAppleY, block_size, block_size]) snakeHead = [] snakeHead.append(lead_x) snakeHead.append(lead_y) snakeList.append(snakeHead) if len(snakeList) > snakeLength: del snakeList[0] for eachSegment in snakeList[:-1]: if eachSegment == snakeHead: gameOver = True snake(block_size, snakeList) pygame.display.update() if lead_x == randAppleX and lead_y == randAppleY: randAppleX = round(random.randrange(0, display_width - block_size) / 10.0) * 10.0 randAppleY = round(random.randrange(0, display_height - block_size) / 10.0) * 10.0 snakeLength += 1 clock.tick(FPS) pygame.quit()
quit()