用python编写贪吃蛇小游戏

好的，以下是一个简单的贪吃蛇小游戏的 Python 代码：

import pygame
import random

# 初始化 Pygame
pygame.init()

# 定义窗口大小和标题
win_width = 500
win_height = 500
win = pygame.display.set_mode((win_width, win_height))
pygame.display.set_caption("贪吃蛇")

# 定义游戏参数
block_size = 10
score_font = pygame.font.SysFont("Arial", 20)
clock = pygame.time.Clock()

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

# 定义贪吃蛇类
class Snake:
    def __init__(self):
        self.x = win_width / 2
        self.y = win_height / 2
        self.body = [(self.x, self.y)]
        self.direction = "right"

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

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

    def draw(self):
        for x, y in self.body:
            pygame.draw.rect(win, white, (x, y, block_size, block_size))

    def grow(self):
        self.body.insert(0, (self.x, self.y))

    def collide(self):
        if self.x < 0 or self.x + block_size > win_width or self.y < 0 or self.y + block_size > win_height:
            return True

        for i in range(1, len(self.body)):
            if self.x == self.body[i][0] and self.y == self.body[i][1]:
                return True

        return False

# 定义食物类
class Food:
    def __init__(self):
        self.x = random.randint(0, win_width - block_size)
        self.y = random.randint(0, win_height - block_size)

    def draw(self):
        pygame.draw.rect(win, red, (self.x, self.y, block_size, block_size))

# 定义游戏主循环
def main():
    snake = Snake()
    food = Food()
    score = 0

    while True:
        # 处理事件
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                quit()
            elif event.type == pygame.KEYDOWN:
                if event.key == pygame.K_LEFT and snake.direction != "right":
                    snake.direction = "left"
                elif event.key == pygame.K_RIGHT and snake.direction != "left":
                    snake.direction = "right"
                elif event.key == pygame.K_UP and snake.direction != "down":
                    snake.direction = "up"
                elif event.key == pygame.K_DOWN and snake.direction != "up":
                    snake.direction = "down"

        # 移动贪吃蛇
        snake.move()

        # 判断是否碰到墙壁或自身
        if snake.collide():
            pygame.quit()
            quit()

        # 判断是否吃到食物
        if snake.x == food.x and snake.y == food.y:
            snake.grow()
            food = Food()
            score += 10

        # 绘制游戏界面
        win.fill(black)
        snake.draw()
        food.draw()
        score_text = score_font.render("Score: " + str(score), True, white)
        win.blit(score_text, (10, 10))
        pygame.display.update()

        # 控制游戏帧率
        clock.tick(20)

# 启动游戏
if __name__ == "__main__":
    main()

这个代码使用 Pygame 库来实现贪吃蛇小游戏。在游戏窗口中，你需要使用方向键来控制贪吃蛇的移动，尽量避免碰到墙壁或自身，吃到食物可以增加得分。游戏结束后会显示最终得分。