基于pygame的简易贪吃蛇游戏

基于pygame的简易贪吃蛇游戏

代码较少，使用了很基础的python知识

import pygame, sys, random

from pygame.locals import *

# 定义颜色
# 果实
redColor = pygame.Color(255, 0, 0)
# 背景
blackColor = pygame.Color(0, 0, 0)
# 蛇
whiteColor = pygame.Color(255, 255, 255)


# 游戏结束
def gameOver():
    pygame.quit()
    sys.exit()


# 初始化
def main():
    pygame.init()
    # 控制速度
    fpsClock = pygame.time.Clock()
    # 创建界面
    playSurface = pygame.display.set_mode((640, 480))
    pygame.display.set_caption('贪吃蛇')

    # 初始化变量
    # 贪吃蛇起始位置
    snakePosition = [100, 100]
    snakeBody = [[100, 100], [80, 100], [60, 100]]
    targetPosition = [300, 300]
    # 1为没有吃，0为吃掉了
    targetFlag = 1
    # 初始化方向
    direction = 'right'
    # 方向变量
    changeDirection = direction
    # 按键监听
    while True:
        for event in pygame.event.get():
            if event.type == QUIT:
                pygame.quit()
                sys.exit()
            elif event.type == KEYDOWN:
                if event.key == K_RIGHT:
                    changeDirection = 'right'
                if event.key == K_LEFT:
                    changeDirection = 'left'
                if event.key == K_UP:
                    changeDirection = 'up'
                if event.key == K_DOWN:
                    changeDirection = 'down'
                if event.key == K_ESCAPE:
                    pygame.event.post(pygame.event.Event(QUIT))

        # 确定方向
        if changeDirection == 'right' and not direction == 'left':
            direction = changeDirection
        if changeDirection == 'left' and not direction == 'right':
            direction = changeDirection
        if changeDirection == 'up' and not direction == 'down':
            direction = changeDirection
        if changeDirection == 'down' and not direction == 'up':
            direction = changeDirection

        # 根据方向移动蛇头
        if direction == 'right':
            snakePosition[0] += 20
        if direction == 'left':
            snakePosition[0] -= 20
        if direction == 'up':
            snakePosition[1] -= 20
        if direction == 'down':
            snakePosition[1] += 20

        # 增加一个蛇的长度
        snakeBody.insert(0, list(snakePosition))
        # 食物与蛇位置重合：吃掉
        if snakePosition[0] == targetPosition[0] and snakePosition[1] == targetPosition[1]:
            targetFlag = 0
        else:
            # 删除蛇的最后一个位置，相当于没有变化
            snakeBody.pop()

        # 重新生成食物
        if targetFlag == 0:
            x = random.randrange(1, 32)
            y = random.randrange(1, 24)
            targetPosition = [int(x * 20), int(y * 20)]
            targetFlag = 1

        # 填充背景颜色
        playSurface.fill(blackColor)

        for position in snakeBody:
            # 画蛇
            pygame.draw.rect(playSurface, whiteColor, Rect(position[0], position[1], 20, 20), 0)
            # 画果实
            pygame.draw.rect(playSurface, redColor, Rect(targetPosition[0], targetPosition[1], 20, 20), 0)

        # 显示到屏幕
        pygame.display.flip()

        # 游戏结束
        if snakePosition[0] > 620 or snakePosition[0] < 0:
            print('您撞墙了，游戏结束')
            gameOver()
        elif snakePosition[1] > 460 or snakePosition[1] < 0:
            print('您撞墙了，游戏结束')
            gameOver()
        else:
            flag = 1
            for position in snakeBody:
                if flag == 1:
                    flag = 0
                    continue
                if snakePosition[0] == position[0] and snakePosition[1] == position[1]:
                    print('你把自己咬死了，游戏结束')
                    gameOver()

        # 控制游戏速度
        fpsClock.tick(10)


# 启动入口函数
if __name__ == '__main__':
    main()

效果图