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import pygame as pg

import sys

from random import randint

import time


pg.init()


game_window = pg.display.set_mode((600, 500))

pg.display.set_caption("接弹珠游戏")

score = 0

font = pg.font.Font(None, 60)

window_color = (2, 120, 110)  # 设置窗口颜色——黑色

ball_color = (255, 20, 120)  # 设置球的颜色-——绿色

rect_color = (255, 130, 0)  # 设置挡板颜色——红色

move_x = 1

move_y = 1

ball_x = randint(20, 580)  # 球的初始位置随机

ball_y = randint(20, 480)

points = 1

count = 0


while True:

    game_window.fill(window_color)

    for event in pg.event.get():

        if event.type == pg.QUIT:

            sys.exit()

    mouse_x, mouse_y = pg.mouse.get_pos()

    pg.draw.circle(game_window, ball_color, (ball_x, ball_y), 20)  # 在窗口内画球

    pg.draw.rect(game_window, rect_color, (mouse_x, 490, 100, 10))  # 在窗口内画矩形接拍

    ball_x += move_x

    ball_y += move_y

    my_score = font.render(str(score), False, (255, 255, 0))  # 设置分数显示，黄色

    game_window.blit(my_score, (500, 30))

    ball_x += move_x

    ball_y += move_y

    if ball_x <= 20 or ball_x >= 580:  # 左右两侧墙壁

        move_x = -move_x  # 碰到左右两侧墙壁时，X坐标变为反方向

    if ball_y <= 20:  # 碰到上方墙壁时，Y坐标改变方向

        move_y = -move_y

    elif ball_x > (mouse_x - 20) and ball_x < (mouse_x + 120) and ball_y >= 470:

        move_y = -move_y  # 下方接到球，改变Y坐标方向，并加分

        score += points

        count += 1  # 接球次数加1

        if count == 5:

            count = 0

            points += points  # 分数翻倍

            if move_x > 0:

                move_x += 1

            else:

                move_x -= 1

            move_y -= 1

    elif ball_y > 480 and (ball_x <= mouse_x - 20 or ball_x >= mouse_x + 120):

        ball_y = 490  # 没有接到球，退出程序

        break

    pg.display.update()  # 更新窗口，保证窗口始终打开

    time.sleep(0.008)  # 球运动的速度0.008秒走一个像素