Python写一个贪吃蛇小游戏

pip install pygame

clock.tick(10)  # 数字越大速度越快

import pygameimport sysimport random
# 全局定义SCREEN_X = 600SCREEN_Y = 600

# 蛇类# 点以25为单位class Snake(object):    # 初始化各种需要的属性 [开始时默认向右/身体块x5]    def __init__(self):        self.dirction = pygame.K_RIGHT        self.body = []        for x in range(5):            self.addnode()            # 无论何时 都在前端增加蛇块    def addnode(self):        left,top = (0,0)        if self.body:            left,top = (self.body[0].left,self.body[0].top)        node = pygame.Rect(left,top,25,25)        if self.dirction == pygame.K_LEFT:            node.left -= 25        elif self.dirction == pygame.K_RIGHT:            node.left += 25        elif self.dirction == pygame.K_UP:            node.top -= 25        elif self.dirction == pygame.K_DOWN:            node.top += 25        self.body.insert(0,node)            # 删除最后一个块    def delnode(self):        self.body.pop()            # 死亡判断    def isdead(self):        # 撞墙        if self.body[0].x  not in range(SCREEN_X):            return True        if self.body[0].y  not in range(SCREEN_Y):            return True        # 撞自己        if self.body[0] in self.body[1:]:            return True        return False            # 移动！    def move(self):        self.addnode()        self.delnode()            # 改变方向 但是左右、上下不能被逆向改变    def changedirection(self,curkey):        LR = [pygame.K_LEFT,pygame.K_RIGHT]        UD = [pygame.K_UP,pygame.K_DOWN]        if curkey in LR+UD:            if (curkey in LR) and (self.dirction in LR):                return            if (curkey in UD) and (self.dirction in UD):                return            self.dirction = curkey              # 食物类# 方法：放置/移除# 点以25为单位class Food:    def __init__(self):        self.rect = pygame.Rect(-25,0,25,25)            def remove(self):        self.rect.x=-25        def set(self):        if self.rect.x == -25:            allpos = []            # 不靠墙太近 25 ~ SCREEN_X-25 之间            for pos in range(25,SCREEN_X-25,25):                allpos.append(pos)            self.rect.left = random.choice(allpos)            self.rect.top  = random.choice(allpos)            print(self.rect)            
def show_text(screen, pos, text, color, font_bold = False, font_size = 60, font_italic = False):       #获取系统字体，并设置文字大小      cur_font = pygame.font.SysFont("宋体", font_size)      #设置是否加粗属性      cur_font.set_bold(font_bold)      #设置是否斜体属性      cur_font.set_italic(font_italic)      #设置文字内容      text_fmt = cur_font.render(text, 1, color)      #绘制文字      screen.blit(text_fmt, pos)
     def main():    pygame.init()    screen_size = (SCREEN_X,SCREEN_Y)    screen = pygame.display.set_mode(screen_size)    pygame.display.set_caption('Snake')    clock = pygame.time.Clock()    scores = 0    isdead = False        # 蛇/食物    snake = Snake()    food = Food()        while True:        for event in pygame.event.get():            if event.type == pygame.QUIT:                sys.exit()            if event.type == pygame.KEYDOWN:                snake.changedirection(event.key)                # 死后按space重新                if event.key == pygame.K_SPACE and isdead:                    return main()                                    screen.fill((255,255,255))                # 画蛇身 / 每一步+1分        if not isdead:            scores+=1            snake.move()        for rect in snake.body:            pygame.draw.rect(screen,(20,220,39),rect,0)                    # 显示死亡文字        isdead = snake.isdead()        if isdead:            show_text(screen,(100,200),'YOU DEAD!',(227,29,18),False,100)            show_text(screen,(150,260),'press space to try again...',(0,0,22),False,30)                    # 食物处理 / 吃到+50分        # 当食物rect与蛇头重合,吃掉 -> Snake增加一个Node        if food.rect == snake.body[0]:            scores+=50            food.remove()            snake.addnode()                # 食物投递        food.set()        pygame.draw.rect(screen,(136,0,21),food.rect,0)                # 显示分数文字        show_text(screen,(50,500),'Scores: '+str(scores),(223,223,223))                pygame.display.update()        clock.tick(10)        if __name__ == '__main__':    main()