说起电影《黑客帝国》,置信大部分人都看过或据说过,影片中有一个场景数字雨,如果你看过电影的话,应该对这个经典场景印象粗浅,本文咱们利用 Python 以数字、字母、图片三种模式来实现这一成果。
1. 数字
首先,咱们来实现数字雨,咱们须要创立一个窗口来显示内容,窗口的创立应用 pygame
库,代码实现如下:
FONT_PX = 15pygame.init()winSur = pygame.display.set_mode((500, 600))font = pygame.font.SysFont('fangsong', 20)bg_suface = pygame.Surface((500, 600), flags=pygame.SRCALPHA)pygame.Surface.convert(bg_suface)bg_suface.fill(pygame.Color(0, 0, 0, 13))winSur.fill((0, 0, 0))# 数字texts = [font.render(str(i), True, (0, 255, 0)) for i in range(10)]colums = int(500 / FONT_PX)drops = [0 for i in range(colums)]while True: for event in pygame.event.get(): if event.type == pygame.QUIT: exit() pygame.time.delay(33) winSur.blit(bg_suface, (0, 0)) for i in range(len(drops)): text = random.choice(texts) winSur.blit(text, (i * FONT_PX, drops[i] * FONT_PX)) drops[i] += 1 if drops[i] * 10 > 600 or random.random() > 0.95: drops[i] = 0 pygame.display.flip()
实现成果如下:
2. 字母
接着,咱们再来实现字母雨,实现形式根本就是将下面实现数字雨的数字换成字母,代码实现如下:
PANEL_width = 400PANEL_highly = 500FONT_PX = 15pygame.init()# 创立一个窗口winSur = pygame.display.set_mode((PANEL_width, PANEL_highly))font = pygame.font.SysFont('123.ttf', 22)bg_suface = pygame.Surface((PANEL_width, PANEL_highly), flags=pygame.SRCALPHA)pygame.Surface.convert(bg_suface)bg_suface.fill(pygame.Color(0, 0, 0, 28))winSur.fill((0, 0, 0))letter = ['q', 'w', 'e', 'r', 't', 'y', 'u', 'i', 'o', 'p', 'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', 'z', 'x', 'c', 'v', 'b', 'n', 'm']texts = [ font.render(str(letter[i]), True, (0, 255, 0)) for i in range(26)]# 按窗口的宽度来计算能够在画板上放几列坐标并生成一个列表column = int(PANEL_width / FONT_PX)drops = [0 for i in range(column)]while True: # 从队列中获取事件 for event in pygame.event.get(): if event.type == pygame.QUIT: exit() elif event.type == pygame.KEYDOWN: chang = pygame.key.get_pressed() if (chang[32]): exit() # 暂停给定的毫秒数 pygame.time.delay(30) # 从新编辑图像 winSur.blit(bg_suface, (0, 0)) for i in range(len(drops)): text = random.choice(texts) # 从新编辑每个坐标点的图像 winSur.blit(text, (i * FONT_PX, drops[i] * FONT_PX)) drops[i] += 1 if drops[i] * 10 > PANEL_highly or random.random() > 0.95: drops[i] = 0 pygame.display.flip()
实现成果如下:
3. 图片
最初,咱们应用图片来实现这一成果,图片咱们就应用雨滴吧,这里咱们应用 tkinter 创立窗口,代码实现如下:
# 初始雨滴纵坐标INIT_HEIGHT = 10# 雨滴创立def rainmake(canvas, imagefile): rainlist = [] for i in range(5): # 依据图片,创立一排雨滴 rainlist.append(canvas.create_image(100 + 80 * i, INIT_HEIGHT, anchor=NE, image=imagefile)) return rainlist# 雨滴着落def raindown(tk, canvas, imagefile, sec): # 线程间期待 time.sleep(sec) rainlist = rainmake(canvas, imagefile) # 每个雨滴的纵坐标值 height = [INIT_HEIGHT] * 10 while True: # 每次挪动前稍等一会 time.sleep(0.2) # 5 个雨滴一起挪动 for i in range(5): # 如果雨滴字到底了,则不继续移动 if not height[i] == 0: # 设置着落步调 rnd = random.randint(5, 50) canvas.move(rainlist[i], 0, rnd) height[i] = height[i] + rnd tk.update() for i,h in enumerate(height): if h > 400: # 当雨滴字走到最下方,则删除 canvas.delete(rainlist[i]) tk.update() # 清空该雨滴的 height height[i] = 0 print(i,h,height) # 全到底,则跳出循环 if height == [0] * 5: print('break:',threading.current_thread().name) breakdef lookloop(tk, canvas, thread): aliveflg = False while True: # 5s 检测一次 time.sleep(5) for th in thread: if th.is_alive(): aliveflg = True else: aliveflg = False if aliveflg == False: break canvas.create_text(100 , 200, text='雨停了...', fill='red') canvas.pack() time.sleep(5) tk.destroy()
实现成果如下:
源码在公众号 Python小二 后盾回复 200513 获取。