实践|pygame贪吃蛇

创建界面

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print("创建游戏窗口")
    # 导入GUI
    pygame.init()
    # 设置窗口尺寸
    screen = pygame.display.set_mode((800, 600))
    # 设置窗口标题
    pygame.display.set_caption("贪吃蛇")
    running = True
    while running:
        for event in pygame.event.get():
            if event.type == pygame.quit():
                running = False

参数初始化

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class Point:
    row = 0
    clo = 0

    def __init__(self, row, clo):
        self.row = row
        self.clo = clo

    def copy(self):
        return Point(row=self.row, clo=self.clo)
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pygame.init()
# 初始化图形界面大小
GUI_width = 800
GUI_height = 400

ROW = 30
CLO = 40
# 初始化分数
game_score = 0

direct = 'left'
GUI_screen = pygame.display.set_mode((GUI_width, GUI_height))
pygame.display.set_caption('贪吃蛇游戏')

# 蛇头
head = Point(row=int(ROW / 2), clo=int(CLO / 2))
# 蛇身
snake = [
    Point(row=head.row, clo=head.clo + 1),
    Point(row=head.row, clo=head.clo + 2),
    Point(row=head.row, clo=head.clo + 3)
]

运行

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running = True
# 设置帧频率
clock = pygame.time.Clock()
display_score_text = '得分:' + str(game_score)
try:
    score_font = pygame.font.SysFont('bahnschrift', 30)  # 创建一个font对象，显示结果
except FileNotFoundError:
    print("没有这个字体,下面是已安装的字体")
    print(pygame.font.get_fonts())
    score_font = pygame.font.Font(None, 30)
WhiteFont = (255, 255, 255)
while running:
    # 处理帧频 锁帧
    clock.tick(30)
    # pygame.event.get()获取当前事件的队列 可以同时发生很多事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        elif event.type == pygame.KEYDOWN:
            GUI_screen.blit(score_surface, (10, 5))  # 将结果绘制出来
            # 这里小细节蛇不可以直接左右上下 要判断当前是在什么状态下前行
            if event.key == 273 or event.key == 119:
                if direct == 'left' or direct == 'right':
                    direct = 'top'
            if event.key == 274 or event.key == 115:
                if direct == 'left' or direct == 'right':
                    direct = 'bottom'
            if event.key == 276 or event.key == 97:
                if direct == 'top' or direct == 'bottom':
                    direct = 'left'
            if event.key == 275 or event.key == 100:
                if direct == 'top' or direct == 'bottom':
                    direct = 'right'
    # 吃东西
    eat = (head.row == snake_food_location.row and head.clo == snake_food_location.clo)

    if eat:
        snake_food_location = Point(row=random.randint(0, ROW - 1), clo=random.randint(0, CLO - 1))
        game_score = game_score + 1
    snake.insert(0, head.copy())
    if not eat:
        snake.pop()

    # 移动一下
    if direct == 'left':
        head.clo -= 1
    if direct == 'right':
        head.clo += 1
    if direct == 'top':
        head.row -= 1
    if direct == 'bottom':
        head.row += 1
    dead = False
    if head.clo < 0 or head.row < 0 or head.clo >= CLO or head.row >= ROW:
        dead = True
    for body in snake:
        if head.clo == body.clo and head.row == body.row:
            dead = True
            break
    game_over = False
    if dead:
        print('Game Over')
        game_over = True
    # 背景画图
    pygame.draw.rect(GUI_screen, (245, 135, 155), (0, 0, GUI_width, GUI_height))
    score_surface = score_font.render("Score : %s" % str(game_score), True, WhiteFont)
    # 图像，绘制的位置，绘制的截面框
    GUI_screen.blit(score_surface, (0, 0), score_surface.get_rect())
    # 蛇头
    rect(head, head_color)
    # 绘制食物
    rect(snake_food_location, snake_food_color)
    # 绘制蛇的身子
    for body in snake:
        rect(body, snake_color)
    if game_over:
        running = False
        # pygame.quit()
        # break
        # quit()

    pygame.display.flip()