貪吃蛇遊戲自動失敗

Question

基本上是標題。我不確定問題是什麼。我嘗試了幾件小事來嘗試修復它。複製並粘貼並等待一秒鐘，然後按任意鍵。它會自動丟失。將不勝感激的幫助。可能是因爲我試圖添加的等待，但我不確定。應該是一個相當快速的修復。這是我的遊戲至少在功能上最後要做的事情。

import pygame 
import random 

black = (0,0,0) 
white = (255,255,255) 
red = (255,0,0) 
lime = (0,255,0) 
blue = (0,0,255) 
yellow = (255,255,0) 
Aqua = (0,255,255) 

display_height = 800 
display_width = 600 


snake_width = 10 
snake_length = 10 
snake_x = 400 
snake_y = 300 

f = 0 

food_w = 10 
food_h = 10 

gameDisplay = pygame.display.set_mode((display_height,display_width)) 

pygame.init() 
clock = pygame.time.Clock() 
def message_to_screen(msg, color, msgx, msgy): 

font = pygame.font.SysFont("Times New Roman", 18) 
datext = font.render(msg, 1, color) 
gameDisplay.blit(datext, [msgx, msgy]) 

def wait(): 
    while True: 
     for event in pygame.event.get(): 
      if event.type == pygame.QUIT: 
       pygame.quit() 
       quit() 
      if event.type == pygame.KEYDOWN and event.key == 
                pygame.K_RETURN: 
       game() 

def food(food_x,food_y): 

    pygame.draw.rect(gameDisplay, white, [food_x, food_y, food_w, food_h]) 
    pygame.display.update() 

def snake(block_size, snakelist): 

    for XnY in snakelist: 
     pygame.draw.rect(gameDisplay, Aqua, [XnY[0], XnY[1], snake_width, 
snake_length]) 
    pygame.display.update() 

def text_objects(text,font): 
    textSurface = font.render(text, True, red) 
    return textSurface, textSurface.get_rect() 


def display_message(text): 
    largeText = pygame.font.Font('freesansbold.ttf', 35) 
    TextSurf, TextRect = text_objects(text, largeText) 
    TextRect.center = ((400),(300)) 
    gameDisplay.blit(TextSurf, TextRect) 
    pygame.display.update() 

def score(count): 
    myFont = pygame.font.SysFont("Times New Roman", 18) 
    score_label = myFont.render("You're Score:" +str(count), 1, red) 
    gameDisplay.blit(score_label, (0, 0)) 

def lose(): 

    display_message('You Lose! Press ENTER to Play Again') 
    wait() 
    game() 

def game(): 



    food_startx = round(random.randrange(0, display_width-food_w)/10.0)*10.0 
    food_starty = round(random.randrange(0, display_height- 
             food_h)/10.0)*10.0 

    snakelist = [] 
    snakeLength = 50 

    f = 0 


    snake_startx = 400 
    snake_starty = 300 
    snake_speedx = 0 
    snake_speedy = 0 
    block_size = (10,10) 
    snake_head = (snake_startx, snake_starty) 



    gameExit = False 

    while not gameExit: 

     for event in pygame.event.get(): 
      if event.type == pygame.QUIT: 
       pygame.quit() 
       quit() 

      if event.type == pygame.KEYDOWN: 
       if event.key == pygame.K_LEFT: 
        snake_speedx = -5 
        snake_speedy = 0 
       if event.key == pygame.K_RIGHT: 
        snake_speedx = 5 
        snake_speedy = 0 
       if event.key == pygame.K_UP: 
        snake_speedy = -5 
        snake_speedx = 0 
       if event.key == pygame.K_DOWN: 
        snake_speedy = 5 
        snake_speedx = 0 


     if snake_startx < 0 or snake_startx > 800 or snake_starty > 600 or 
                 snake_starty < 0: 
      lose() 

     score(f) 
     snake_startx += snake_speedx 
     snake_starty += snake_speedy 


     snakeHead = [] 
     snakeHead.append(snake_startx) 
     snakeHead.append(snake_starty) 
     snakelist.append(snakeHead) 

     if len(snakelist) > snakeLength and snakeHead!= 1: 
      del snakelist[0] 

      for eachSegment in snakelist[:-1]: 
       if eachSegment == snakeHead and snakeHead != 1: 
        lose() 

     snake(block_size, snakelist) 
     food(food_startx, food_starty) 

     if snake_startx == food_startx and snake_starty == food_starty: 
      food_startx = round(random.randrange(0, display_width - food_w) 
                 /10.0) * 10.0 
      food_starty = round(random.randrange(0, display_height - food_h) 
                  /10.0) * 10.0 
      f += 1 
      snakeLength += 1 

     if food_startx >= 800 or food_startx <= 0: 
      food_startx = round(random.randrange(0, display_width - food_w) 
/10.0) * 10.0 
      food_starty = round(random.randrange(0, display_height - food_h) 
/10.0) * 10.0 

     if food_starty >= 600 or food_starty <= 0: 
      food_startx = round(random.randrange(0, display_width - food_w) 
/10.0) * 10.0 
      food_starty = round(random.randrange(0, display_height - food_h) 
/10.0) * 10.0 



     pygame.display.update() 
     gameDisplay.fill(black) 
     clock.tick(45) 




game() 
pygame.quit() 

Answer 1

您遇到的問題是，你會intialised你的速度(0, 0)，所以下產生的部分是在其本身上，從而立即失效。除了一些其他的bug之外，我還解決了這個問題，比如說你的蛇正在移出它的長度的相位，這意味着蛇可能會錯過半個長度的食物，所以它會半食物。我還整理了你的命名，並在這裏和那裏添加了一些整潔的成語（比如評論中提到的鏈式比較器範圍檢查）。

import pygame 
import random 

directions = {pygame.K_LEFT: (-1, 0), 
       pygame.K_RIGHT: (1, 0), 
       pygame.K_UP: (0, -1), 
       pygame.K_DOWN: (0, 1), 
       } 

black = (0,0,0) 
white = (255,255,255) 
red = (255,0,0) 
lime = (0,255,0) 
blue = (0,0,255) 
yellow = (255,255,0) 
aqua = (0,255,255) 

display_width = 600 
display_height = 800 

snake_width = 10 
snake_length = 10 
snake_x = 400 
snake_y = 300 

food_w = 10 
food_h = 10 

game_display = pygame.display.set_mode((display_height,display_width)) 

pygame.init() 
clock = pygame.time.Clock() 

def round_to_nearest(num, interval): 
    return round(float(num)/interval) * interval 

def rounded_in_range(start, stop, interval): 
    return round_to_nearest(random.randrange(start, stop), interval) 

def message_to_screen(msg, color, msgx, msgy): 
    font = pygame.font.SysFont("Times New Roman", 18) 
    datext = font.render(msg, 1, color) 
    game_display.blit(datext, [msgx, msgy]) 

def wait(): 
    while True: 
     for event in pygame.event.get(): 
      if event.type == pygame.QUIT: 
       pygame.quit() 
       quit() 
      if event.type == pygame.KEYDOWN and event.key == pygame.K_RETURN: 
       game() 

def food(food_x,food_y): 
    pygame.draw.rect(game_display, white, [food_x, food_y, food_w, food_h]) 
    pygame.display.update() 

def snake(snake_width, snake_length, snake_segments): 
    for XnY in snake_segments: 
     pygame.draw.rect(game_display, aqua, [XnY[0], XnY[1], snake_width, snake_length]) 
    pygame.display.update() 

def text_objects(text,font): 
    textSurface = font.render(text, True, red) 
    return textSurface, textSurface.get_rect() 

def display_message(text): 
    largeText = pygame.font.Font('freesansbold.ttf', 35) 
    TextSurf, TextRect = text_objects(text, largeText) 
    TextRect.center = (400,300) 
    game_display.blit(TextSurf, TextRect) 
    pygame.display.update() 

def score(count): 
    myFont = pygame.font.SysFont("Times New Roman", 18) 
    score_label = myFont.render("Your Score: {}".format(count), 1, red) 
    game_display.blit(score_label, (0, 0)) 

def lose(): 
    display_message('You Lose! Press ENTER to Play Again') 
    wait() 
    game() 

def game(): 
    food_x = rounded_in_range(food_w, display_width - food_w, food_w) 
    food_y = rounded_in_range(food_h, display_height - food_h, food_h) 

    snake_segments = [] 
    target_segments = 50 

    player_score = 0 

    snake_x = 400 
    snake_y = 300 
    snake_speedx, snake_speedy = directions[pygame.K_RIGHT] 
    snake_speedx *= snake_width 
    snake_speedy *= snake_length 
    snake_head = (snake_x, snake_y) 

    while True: 
     for event in pygame.event.get(): 
      if event.type == pygame.QUIT: 
       pygame.quit() 
       quit() 

      if event.type == pygame.KEYDOWN: 
       snake_speedx, snake_speedy = directions[event.key] 
       snake_speedx *= snake_width 
       snake_speedy *= snake_length 

     if not 0 < snake_x < game_display.get_width() or not 0 < snake_y < game_display.get_height(): 
      lose() 

     score(player_score) 
     snake_x += snake_speedx 
     snake_y += snake_speedy 

     if len(snake_segments) > target_segments: 
      del snake_segments[0] 

     snake_head = [snake_x, snake_y] 
     snake_segments.append(snake_head) 

     for segment in snake_segments[:-1]: 
      if segment == snake_head: 
       lose() 

     snake(snake_width, snake_length, snake_segments) 
     food(food_x, food_y) 

     if snake_x == food_x and snake_y == food_y: 
      food_x = rounded_in_range(food_w, display_width - food_w, food_w) 
      food_y = rounded_in_range(food_h, display_height - food_h, food_h) 
      print("new food at {} {}".format(food_x, food_y)) 
      player_score += 1 
      target_segments += 1 

     pygame.display.update() 
     game_display.fill(black) 
     clock.tick(10) 

game() 
pygame.quit() 

我不能保證，這個計劃是完美的 - 例如，你仍可以變回你自己，導致立即死亡，而食物可以蛇的身體內產卵，但它現在應該是可操作的。