贪吃蛇游戏Python代码

贪吃蛇游戏是一种经典的小游戏，使用Python编写贪吃蛇游戏可以提高你的编程技能，下面是一个简单的贪吃蛇游戏的Python代码：

import pygame
import random

# 初始化pygame模块
pygame.init()

# 定义屏幕大小
width = 500
height = 500

# 创建屏幕对象
screen = pygame.display.set_mode((width, height))

# 定义颜色
white = (255, 255, 255)
black = (0, 0, 0)
red = (255, 0, 0)

# 设置字体
font = pygame.font.SysFont(None, 30)

# 定义贪吃蛇
snake_block = 10
snake_speed = 15

def snake(snake_block, snake_List):
    for x in snake_List:
        pygame.draw.rect(screen, black, [x, x, snake_block, snake_block])

# 定义游戏循环
def gameLoop():
    game_over = False
    game_close = False

    # 初始化贪吃蛇位置和长度
    x1 = width / 2
    y1 = height / 2

    x1_change = 0       
    y1_change = 0

    snake_List = []
    Length_of_snake = 1

    # 定义食物位置
    foodx = round(random.randrange(0, width - snake_block) / 10.0) * 10.0
    foody = round(random.randrange(0, height - snake_block) / 10.0) * 10.0

    # 游戏循环
    while not game_over:
        while game_close == True:
            # 显示游戏结束信息
            screen.fill(white)
            message("You Lost! Press Q-Quit or C-Play Again",red)
            pygame.display.update()

            # 判断游戏结束还是重新开始
            for event in pygame.event.get():
                if event.type == pygame.KEYDOWN:
                    if event.key == pygame.K_q:
                        game_over = True
                        game_close = False
                    if event.key == pygame.K_c:
                        gameLoop()

        # 监听事件
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                game_over = True
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_LEFT:
                    x1_change = -snake_block
                    y1_change = 0
                elif event.key == pygame.K_RIGHT:
                    x1_change = snake_block
                    y1_change = 0
                elif event.key == pygame.K_UP:
                    y1_change = -snake_block
                    x1_change = 0
                elif event.key == pygame.K_DOWN:
                    y1_change = snake_block
                    x1_change = 0

        # 判断贪吃蛇是否超出边界
        if x1 >= width or x1 < 0 or y1 >= height or y1 < 0:
            game_close = True

        # 更新贪吃蛇位置
        x1 += x1_change
        y1 += y1_change

        # 填充背景色
        screen.fill(white)

        # 画食物和贪吃蛇
        pygame.draw.rect(screen, red, [foodx, foody, snake_block, snake_block])
        snake_Head = []
        snake_Head.append(x1)
        snake_Head.append(y1)
        snake_List.append(snake_Head)
        if len(snake_List) > Length_of_snake:
            del snake_List

        for x in snake_List[:-1]:
            if x == snake_Head:
                game_close = True

        snake(snake_block, snake_List)
        pygame.display.update()

        # 判断是否吃到食物并更新食物位置和贪吃蛇长度
        if x1 == foodx and y1 == foody:
            foodx = round(random.randrange(0, width - snake_block) / 10.0) * 10.0
            foody = round(random.randrange(0, height - snake_block) / 10.0) * 10.0
            Length_of_snake += 1
        
        # 控制游戏速度
        clock.tick(snake_speed)

    # 关闭pygame模块并退出游戏
    pygame.quit()
    quit()

# 显示消息函数
def message(msg,color):
    mesg = font.render(msg, True, color)
    screen.blit(mesg, [width/6, height/3])

# 创建时钟对象控制游戏速度
clock=pygame.time.Clock()

# 开始游戏循环
gameLoop()