python贪吃蛇完整代码

以下是一个比较完整的Python贪吃蛇游戏的代码示例，包括音效、游戏暂停、游戏结束提示等功能：

import pygame
import random

# 定义颜色
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
RED = (255, 0, 0)
GREEN = (0, 255, 0)
BLUE = (0, 0, 255)

# 定义方向
UP = 0
DOWN = 1
LEFT = 2
RIGHT = 3

# 初始化
pygame.init()

# 设置窗口大小和标题
screen_width = 800
screen_height = 600
screen = pygame.display.set_mode((screen_width, screen_height))
pygame.display.set_caption("贪吃蛇游戏")

# 加载音效
eat_sound = pygame.mixer.Sound("eat.wav")
game_over_sound = pygame.mixer.Sound("game_over.wav")

# 设置时钟
clock = pygame.time.Clock()

# 定义贪吃蛇类
class Snake:
    def __init__(self):
        self.body = [(screen_width/2, screen_height/2)]
        self.direction = random.randint(0, 3)
        self.score = 0

    def move(self):
        head = self.body[0]
        if self.direction == UP:
            new_head = (head[0], head[1]-10)
        elif self.direction == DOWN:
            new_head = (head[0], head[1]+10)
        elif self.direction == LEFT:
            new_head = (head[0]-10, head[1])
        else:
            new_head = (head[0]+10, head[1])
        self.body.insert(0, new_head)
        self.body.pop()

    def change_direction(self, direction):
        if direction == UP and self.direction != DOWN:
            self.direction = UP
        elif direction == DOWN and self.direction != UP:
            self.direction = DOWN
        elif direction == LEFT and self.direction != RIGHT:
            self.direction = LEFT
        elif direction == RIGHT and self.direction != LEFT:
            self.direction = RIGHT

    def eat_food(self, food):
        if self.body[0][0] == food.x and self.body[0][1] == food.y:
            self.body.append((food.x, food.y))
            self.score += 10
            eat_sound.play()
            return True
        else:
            return False

    def collide_self(self):
        if self.body[0] in self.body[1:]:
            return True
        else:
            return False

    def collide_wall(self):
        if self.body[0][0] < 0 or self.body[0][0] > screen_width-10 \
        or self.body[0][1] < 0 or self.body[0][1] > screen_height-10:
            return True
        else:
            return False

# 定义食物类
class Food:
    def __init__(self):
        self.x = random.randint(0, screen_width-10)
        self.y = random.randint(0, screen_height-10)

    def draw(self):
        pygame.draw.rect(screen, RED, (self.x, self.y, 10, 10))

# 定义游戏暂停函数
def pause():
    paused = True
    while paused:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                quit()
            elif event.type == pygame.KEYDOWN:
                if event.key == pygame.K_p:
                    paused = False
                elif event.key == pygame.K_q:
                    pygame.quit()
                    quit()
        # 显示暂停提示
        font = pygame.font.SysFont(None, 50)
        text = font.render("Paused", True, BLACK)
        screen.blit(text, (screen_width/2-75, screen_height/2-25))
        pygame.display.update()
        clock.tick(5)

# 定义游戏结束函数
def game_over():
    game_over = True
    while game_over:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                quit()
            elif event.type == pygame.KEYDOWN:
                if event.key == pygame.K_RETURN:
                    game_over = False
                elif event.key == pygame.K_q:
                    pygame.quit()
                    quit()
        # 显示游戏结束提示
        font = pygame.font.SysFont(None, 50)
        text1 = font.render("Game Over!", True, BLACK)
        text2 = font.render("Press Enter to play again, or Q to quit", True, BLACK)
        screen.blit(text1, (screen_width/2-125, screen_height/2-50))
        screen.blit(text2, (screen_width/2-250, screen_height/2+25))
        pygame.display.update()
        clock.tick(5)

# 初始化贪吃蛇和食物
snake = Snake()
food = Food()

# 游戏循环
game_exit = False
while not game_exit:
    # 事件处理
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            game_exit = True
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_UP:
                snake.change_direction(UP)
            elif event.key == pygame.K_DOWN:
                snake.change_direction(DOWN)
            elif event.key == pygame.K_LEFT:
                snake.change_direction(LEFT)
            elif event.key == pygame.K_RIGHT:
                snake.change_direction(RIGHT)
            elif event.key == pygame.K_p:
                pause()

    # 绘制背景
    screen.fill(WHITE)

    # 绘制贪吃蛇和食物
    for part in snake.body:
        pygame.draw.rect(screen, GREEN, (part[0], part[1], 10, 10))
    food.draw()

    # 移动贪吃蛇
    snake.move()

    # 判断是否吃到食物
    if snake.eat_food(food):
        food = Food()

    # 判断是否碰到自己或者墙壁
    if snake.collide_self() or snake.collide_wall():
        game_over_sound.play()
        game_over()

    # 显示分数
    font = pygame.font.SysFont(None, 25)
    text = font.render("Score: " + str(snake.score), True, BLACK)
    screen.blit(text, (10, 10))

    # 更新屏幕
    pygame.display.update()

    # 控制帧率
    clock.tick(15)

# 退出游戏
pygame.quit()

运行以上代码，即可打开贪吃蛇游戏窗口，使用方向键控制贪吃蛇的移动，吃到食物可以加分，碰到自己或者墙壁会结束游戏。按下 P 键可以暂停游戏，按下 Q 键可以退出游戏。游戏结束后会提示是否重新开始或者退出游戏。