基于Python如何绘制流星雨效果

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浪漫的流星雨展示

4 Python代码

 def bgpic(self, picname=None):    """Set background image or return name of current backgroundimage.    Optional argument:    picname -- a string, name of a gif-file or "nopic".    If picname is a filename, set the corresponding image as background.    If picname is "nopic", delete backgroundimage, if present.    If picname is None, return the filename of the current backgroundimage.    Example (for a TurtleScreen instance named screen):    >>> screen.bgpic()    'nopic'    >>> screen.bgpic("landscape.gif")    >>> screen.bgpic()    'landscape.gif'    """    if picname is None:        return self._bgpicname    if picname not in self._bgpics:        self._bgpics[picname] = self._image(picname)    self._setbgpic(self._bgpic, self._bgpics[picname])    self._bgpicname = picname  # coding: utf-8import pygameimport osimport sysfrom pygame.locals import * os.chdir('E:/星空下的告白')os.getcwd()pygame.init()pygame.mixer.init()pygame.mixer.music.load("星空之美.mp3")# pygame.mixer.music.set_volume(0.4)pygame.mixer.music.play()bg_size = width, height = 300, 200bg_rgb = (255, 255, 255)screen1 = pygame.display.set_mode(bg_size)pygame.display.set_caption("告白音乐")clock = pygame.time.Clock()pause_rect = pause_image.get_rect()print(pause_rect.width, pause_rect.height)pause_rect.left, pause_rect.top = (width - pause_rect.width) // 2, (height - pause_rect.height) // 2from turtle import *from random import random, randint os.chdir('E:星空下的告白')screen = Screen()width, height = 900, 700screen.setup(width, height)screen.title("浪漫的流星雨")screen.bgcolor("black")screen.mode("logo")screen.delay(0)printer = Turtle()printer.hideturtle()printer.penup()printer.color('red')printer.goto(-100, -350)printer.write("宇宙广阔(弱水三千)""\n\n", move=True, align="left", font=("Italic", 30, "bold"))printer.goto(-50, -400)printer.write("只寻你一颗!(只取一瓢饮!)\n\n", move=True, align="left", font=("Italic", 30, "bold"))t = Turtle(visible=False, shape='circle')t.pencolor("white")t.fillcolor("white")t.penup()t.setheading(-90)t.goto(width / 2, randint(-height / 2, height / 2))stars = []for i in range(300):    star = t.clone()    s = random() / 3    if s > 0.01 and s < 0.03:        star.pencolor("black")        star.fillcolor("black")    elif s > 0.03 and s < 0.04:        star.pencolor("lightcoral")        star.fillcolor("lightcoral")    elif s > 0.05 and s < 0.1:        star.pencolor("green")        star.fillcolor("green")    elif s > 0.15 and s < 0.16:        star.pencolor("yellow")        star.fillcolor("yellow")    elif s > 0.19 and s < 0.2:        star.pencolor("red")        star.fillcolor("red")    elif s > 0.21 and s < 0.22:        star.pencolor("purple")        star.fillcolor("purple")    elif s > 0.29 and s < 0.3:        star.pencolor("darkorange")        star.fillcolor("darkorange")    elif s > 0.31 and s < 0.32:        star.pencolor("red")        star.fillcolor("yellow")    elif s > 0.32 and s < 0.33:        star.pencolor("yellow")        star.fillcolor("white")    star.shapesize(s, s)    star.speed(int(s * 30))    star.setx(width / 2 + randint(1, width))    star.sety(randint(-height / 2, height / 2))    # star.showturtle()    stars.append(star)i = 0pause = Falsewhile True:    i += 0    for star in stars:         star.setx(star.xcor() - 3 * star.speed())        if star.xcor() < -width / 2:            star.hideturtle()            star.setx(width / 2 + randint(1, width))            star.sety(randint(-height / 2, height / 2))            star.showturtle()    if i >= 100:        break     # 查找队列事件    for event in pygame.event.get():        # 查找点击关闭窗口事件        if event.type == QUIT:            sys.exit        # 查找鼠标左右击事件        if event.type == MOUSEBUTTONDOWN:            if event.button == 1:                pause = not pause            if event.button == 3:                pause = not pause         if event.type == KEYDOWN:            if event.key == K_SPACE:                pause = not pause    screen1.fill(bg_rgb)    if pause:        pygame.mixer.music.pause()        screen1.blit(pause_image, pause_rect)    else:        pygame.mixer.music.unpause()        screen1.blit(play_image, pause_rect)    pygame.display.flip()    clock.tick(30)

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