pygame 写贪吃蛇

下面是一个简单的 Pygame 贪吃蛇示例代码：

import pygame
import random

# 初始化 Pygame
pygame.init()

# 设置游戏窗口尺寸
WINDOW_WIDTH = 640
WINDOW_HEIGHT = 480
WINDOW_SIZE = (WINDOW_WIDTH, WINDOW_HEIGHT)

# 设置游戏标题
pygame.display.set_caption("Snake Game")

# 定义游戏颜色
BLACK = (0, 0, 0)
WHITE = (255, 255, 255)
GREEN = (0, 255, 0)
RED = (255, 0, 0)

# 设置游戏时钟
clock = pygame.time.Clock()

# 初始化游戏对象
class Snake:
    def __init__(self):
        self.size = 20
        self.x = 0
        self.y = 0
        self.speed = self.size
        self.direction = 'right'
        self.body = []

    def move(self):
        if self.direction == 'right':
            self.x += self.speed
        elif self.direction == 'left':
            self.x -= self.speed
        elif self.direction == 'up':
            self.y -= self.speed
        elif self.direction == 'down':
            self.y += self.speed

        self.body.insert(0, (self.x, self.y))

    def change_direction(self, direction):
        if direction == 'right' and self.direction != 'left':
            self.direction = 'right'
        elif direction == 'left' and self.direction != 'right':
            self.direction = 'left'
        elif direction == 'up' and self.direction != 'down':
            self.direction = 'up'
        elif direction == 'down' and self.direction != 'up':
            self.direction = 'down'

    def draw(self, surface):
        for x, y in self.body:
            pygame.draw.rect(surface, GREEN, (x, y, self.size, self.size))

    def check_collision(self, apple):
        if self.x == apple.x and self.y == apple.y:
            return True
        else:
            return False

class Apple:
    def __init__(self):
        self.size = 20
        self.x = random.randint(0, WINDOW_WIDTH - self.size)
        self.y = random.randint(0, WINDOW_HEIGHT - self.size)

    def draw(self, surface):
        pygame.draw.rect(surface, RED, (self.x, self.y, self.size, self.size))

# 创建游戏窗口
screen = pygame.display.set_mode(WINDOW_SIZE)

# 初始化游戏对象
snake = Snake()
apple = Apple()

# 游戏循环
while True:
    # 处理游戏事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            quit()
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_RIGHT:
                snake.change_direction('right')
            elif event.key == pygame.K_LEFT:
                snake.change_direction('left')
            elif event.key == pygame.K_UP:
                snake.change_direction('up')
            elif event.key == pygame.K_DOWN:
                snake.change_direction('down')

    # 移动贪吃蛇
    snake.move()

    # 检查贪吃蛇是否吃到苹果
    if snake.check_collision(apple):
        apple = Apple()

    # 绘制游戏场景
    screen.fill(BLACK)
    snake.draw(screen)
    apple.draw(screen)

    # 更新屏幕显示
    pygame.display.update()

    # 控制游戏帧率
    clock.tick(10)

这个示例代码创建了一个简单的 Pygame 贪吃蛇游戏，玩家可以使用方向键来控制贪吃蛇的移动方向，同时贪吃蛇会不停地移动，直到吃到苹果为止。如果贪吃蛇吃到了苹果，就会重新生成一个新的苹果。这个示例代码可以帮助你了解 Pygame 的基本用法，同时也可以作为你创建自己的 Pygame 贪吃蛇游戏的基础。