import pygame |
import random |
# 初始化 pygame |
pygame.init() |
# 设置屏幕宽高,根据背景图调整 |
bg_img = "bg.png" |
bg_size = ( 881 , 513 ) |
screen = pygame.display.set_mode(bg_size) |
pygame.display.set_caption( "动态下雪+bgm" ) |
bg = pygame.image.load(bg_img) |
# 雪花列表 |
snow_list = [] |
for i in range ( 150 ): |
x_site = random.randrange( 0 , bg_size[ 0 ]) # 雪花圆心位置 |
y_site = random.randrange( 0 , bg_size[ 1 ]) # 雪花圆心位置 |
X_shift = random.randint( - 1 , 1 ) # x 轴偏移量 |
radius = random.randint( 4 , 6 ) # 半径和 y 周下降量 |
snow_list.append([x_site, y_site, X_shift, radius]) |
# 创建时钟对象 |
clock = pygame.time.Clock() |
# 添加音乐 |
track = pygame.mixer.music.load( 'bgm.mp3' ) # 加载音乐文件 |
pygame.mixer.music.play() # 播放音乐流 |
pygame.mixer.music.fadeout( 600000 ) # 设置音乐结束时间 |
done = False |
while not done: |
# 消息事件循环,判断退出 |
for event in pygame.event.get(): |
if event. type = = pygame.QUIT: |
done = True |
screen.blit(bg, ( 0 , 0 )) |
# 雪花列表循环 |
for i in range ( len (snow_list)): |
# 绘制雪花,颜色、位置、大小 |
pygame.draw.circle(screen, ( 255 , 255 , 255 ), snow_list[i][: 2 ], snow_list[i][ 3 ] - 3 ) |
# 移动雪花位置(下一次循环起效) |
snow_list[i][ 0 ] + = snow_list[i][ 2 ] |
snow_list[i][ 1 ] + = snow_list[i][ 3 ] |
# 如果雪花落出屏幕,重设位置 |
if snow_list[i][ 1 ] > bg_size[ 1 ]: |
snow_list[i][ 1 ] = random.randrange( - 50 , - 10 ) |
snow_list[i][ 0 ] = random.randrange( 0 , bg_size[ 0 ]) |
# 刷新屏幕 |
pygame.display.flip() |
clock.tick( 30 ) |
# 退出 |
pygame.quit() |