怎么用Python实现雪夜烟花景

 

运行截图

在这里插入图片描述

什么?你说你看不清烟花?那我换一种颜色,请点开看。

在这里插入图片描述

 

实现过程

准备工作

使用语言和框架:python、pygame。
安装pygame:

pip install -i https://pypi.tuna.tsinghua.edu.cn/simple/ --trusted-host pypi.tuna.tsinghua.edu.cn pygame

你需要知道的基础知识

首先,pygame渲染是同步的,所以同屏渲染的点过多之后,就会造成卡顿的情况。
其次,pygame的代码逻辑是,周期性渲染一系列的屏,从而产生连续的动画。

你需要掌握的框架基础知识:

 

初始化过程

import pygame
pygame.init()
pygame.mixer.init()
pygame.font.init()

获取字体

myfont = pygame.font.SysFont('simHei', 30)
textsurface = myfont.render(a[i], False, random_color(150, 255))
screen.blit(textsurface, (80, 30))

画圈

pygame.draw.circle(screen, (snow_list[i][4], snow_list[i][5], snow_list[i][6]), snow_list[i][:2],
                         snow_list[i][3] - 3)

加载背景音乐

screen = pygame.display.set_mode(bg_size)
pygame.display.set_caption("新年快乐")
bg = pygame.image.load(bg_img)
pygame.mixer.music.load('D:\\CloudMusic\\小时姑娘 - 霞光-《精灵世纪》片尾曲.mp3')

 

核心代码

基础架子

首先,需要实现一个基础的事件循环的架子,如下:

def main():
  global show_n
  global fk_list
  bg_size = (WIN_W, WIN_H)
  screen = pygame.display.set_mode(bg_size)
  pygame.display.set_caption("新年快乐")
  pygame.mixer.music.load('D:\\CloudMusic\\小时姑娘 - 霞光-《精灵世纪》片尾曲.mp3')
  font_values = ['新年快乐']

  grand_has = set()
  clock = pygame.time.Clock()
  while True:
      if not pygame.mixer.music.get_busy():
          pygame.mixer.music.play()
      for event in pygame.event.get():
          if event.type == pygame.QUIT:
              exit()
      screen.fill((0, 0, 0))
      ... ...
      pygame.display.update()
      time_passed = clock.tick(50)
if __name__ == '__main__':
  main()

 

下雪的过程

现在,需要实现下雪的过程,首先,考虑定义定义一堆初始化的下雪点

def init_xue(bg_size):
  snow_list = []
  for i in range(200):
      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
      xxxxx = random_color(150, 255)
      snow_list.append([x_site, y_site, X_shift, radius, 255, 255, 255])
  return snow_list

然后实现渲染雪的过程

def draw_xue(snow_list: [], screen, bg_size: [], grand_has: set, grand_list: []):
  # 雪花列表循环
  # todo 空中的雪
  for i in range(len(snow_list)):
      # 绘制雪花,颜色、位置、大小
      pygame.draw.circle(screen, (snow_list[i][4], snow_list[i][5], snow_list[i][6]), 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]:
          # tmp = []
          snow_list[i][1] = random.randrange(-50, -10)
          snow_list[i][0] = random.randrange(0, bg_size[0])
          x = snow_list[i][0]
          y = bg_size[1]
          while (grand_has.__contains__(x * 10000 + y)):
              y = y - snow_list[i][3]
          grand_has.add(x * 10000 + y)
          grand_list.append(
              [x, y, snow_list[i][2], snow_list[i][3], snow_list[i][4], snow_list[i][5],
               snow_list[i][6]])

集成到上面的架子中,效果如下:

在这里插入图片描述

不过目前的下雪没有质感,可以考虑在底部堆一些雪,只需要在雪落到地上做特判即可。

 

雪落到地上堆起来的过程

在前面的下雪过程的代码中,我们维护了一个Grand_list的数组,目的就是维护堆雪的效果

min_height = 100000
# todo 地上的积雪
for i in range(len(grand_list)):
  if grand_list[i][0] < 375:
      min_height = min(min_height, grand_list[i][1])

然后进入维护程序:

draw_xue(snow_list, screen, bg_size, grand_has, grand_list)

最后再将雪画出来

for i in range(len(grand_list)):
  pygame.draw.circle(screen, (grand_list[i][4], grand_list[i][5], grand_list[i][6]), grand_list[i][:2],
                     grand_list[i][3] - 3)

在这里插入图片描述

效果图如上。

 

实现烟花的过程

首先定义出烟花类:

class Fireworks():
  is_show = False
  x, y = 0, 0
  vy = 0
  p_list = []
  color = [0, 0, 0]
  v = 0

  def __init__(self, x, y, vy, n=300, color=[0, 255, 0], v=10):
      self.x = x
      self.y = y
      self.vy = vy
      self.color = color
      self.v = v
      for i in range(n):
          self.p_list.append([random.random() * 2 * math.pi, 0, v * math.pow(random.random(), 1 / 3)])
  def run(self):
      global show_n
      for p in self.p_list:
          p[1] = p[1] + (random.random() * 0.6 + 0.7) * p[2]
          p[2] = p[2] * 0.97
          if p[2] < 1.2:
              self.color[0] *= 0.9999
              self.color[1] *= 0.9999
              self.color[2] *= 0.9999
          if max(self.color) < 10 or self.y > WIN_H + p[1]:
              show_n -= 1
              self.is_show = False
              break
      self.vy += 10 * t1
      self.y += self.vy * t1

然后,我们需要画出烟花释放前上升的过程点,这部分与下雪的初始化差不多。

def init_yanhua(bg_size):
  yanhua_list = []
  for i in range(5):
      x_site = random.randrange(0, WIN_W)  # 雪花圆心位置
      y_site = WIN_H  # 雪花圆心位置
      X_shift = 0  # x 轴偏移量
      radius = random.randint(6, 10)  # 半径和 y 周上升降量
      xxxxx = random_color(150, 255)
      red = xxxxx[0]
      green = xxxxx[1]
      blue = xxxxx[2]
      yanhua_list.append([x_site, y_site, X_shift, radius, red, green, blue])
  return yanhua_list

然后是画上升过程

def draw_yanhua(yanhua_list: [], screen, bg_size: []):
  global fk_list
  for i in range(len(yanhua_list)):
      # 绘制雪花,颜色、位置、大小
      pygame.draw.circle(screen, (yanhua_list[i][4], yanhua_list[i][5], yanhua_list[i][6]), yanhua_list[i][:2],
                         yanhua_list[i][3] - 3)
      
      yanhua_list[i][0] += yanhua_list[i][2]
      yanhua_list[i][1] -= yanhua_list[i][3]

      if yanhua_list[i][1] <= 0:
          # tmp = []
          yanhua_list[i][1] = WIN_H
          yanhua_list[i][0] = random.randrange(0, bg_size[0])
      if yanhua_list[i][1] <= random.randint(200, 400):
          # todo 放烟花
          fk = Fireworks(yanhua_list[i][0], yanhua_list[i][1], -20, n=300, color=red_random(1, 150), v=10)
          fk_list.append(fk)
          yanhua_list[i][1] = WIN_H
          yanhua_list[i][0] = random.randrange(0, bg_size[0])

效果图如下:

在这里插入图片描述

圈出来的就是上升过程的烟花。
最后就是绽放部分,其实在上升过程的代码中有维护,如果超过某个随机高度,就会生成一个烟花,只是没有渲染,现在我们把渲染加上。

 for fk in fk_list:
          fk.run()
          for p in fk.p_list:
              x, y = fk.x + p[1] * math.cos(p[0]), fk.y + p[1] * math.sin(p[0])
              if random.random() < 0.055:
                  screen.set_at((int(x), int(y)), (255, 255, 255))
              else:
                  screen.set_at((int(x), int(y)), (int(fk.color[0]), int(fk.color[1]), int(fk.color[2])))
      tmp = []
      for fk in fk_list:
          for p in fk.p_list:
              x, y = fk.x + p[1] * math.cos(p[0]), fk.y + p[1] * math.sin(p[0])
              if y < WIN_H - 1000:
                  tmp.append(fk)
                  break
      fk_list = tmp

最终的运行效果就如最顶上的效果一样。

 

完整代码

将上述过程进行组合,结果如下,感兴趣的朋友可以按自己的需求进行优化。

import pygame
import random
import math
pygame.init()
pygame.mixer.init()
pygame.font.init()
WIN_W = 2200
WIN_H = 1300
t1 = 0.18  # 时间流速
show_n = 0
show_frequency = 0.0015  # 烟花绽放频率,数值越大频率越高
color_list = [
  [255, 0, 0]
]
yanhua_map = {}
fk_list = []
class Fireworks():
  is_show = False
  x, y = 0, 0
  vy = 0
  p_list = []
  color = [0, 0, 0]
  v = 0
  def __init__(self, x, y, vy, n=300, color=[0, 255, 0], v=10):
      self.x = x
      self.y = y
      self.vy = vy
      self.color = color
      self.v = v
      for i in range(n):
          self.p_list.append([random.random() * 2 * math.pi, 0, v * math.pow(random.random(), 1 / 3)])
  def run(self):
      global show_n
      for p in self.p_list:
          p[1] = p[1] + (random.random() * 0.6 + 0.7) * p[2]
          p[2] = p[2] * 0.97
          if p[2] < 1.2:
              self.color[0] *= 0.9999
              self.color[1] *= 0.9999
              self.color[2] *= 0.9999
          if max(self.color) < 10 or self.y > WIN_H + p[1]:
              show_n -= 1
              self.is_show = False
              break
      self.vy += 10 * t1
      self.y += self.vy * t1
def random_color(l, r):
  return [random.randint(l, r), random.randint(l, r), random.randint(l, r)]
def red_random(l, r):
  return [255, random.randint(l, r), random.randint(l, r)]
def init_yanhua(bg_size):
  yanhua_list = []
  for i in range(5):
      x_site = random.randrange(0, WIN_W)  # 雪花圆心位置
      y_site = WIN_H  # 雪花圆心位置
      X_shift = 0  # x 轴偏移量
      radius = random.randint(6, 10)  # 半径和 y 周上升降量
      xxxxx = random_color(150, 255)
      red = xxxxx[0]
      green = xxxxx[1]
      blue = xxxxx[2]
      yanhua_list.append([x_site, y_site, X_shift, radius, red, green, blue])
  return yanhua_list
def init_xue(bg_size):
  snow_list = []
  for i in range(200):
      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
      xxxxx = random_color(150, 255)
      # red = xxxxx[0]
      # green = xxxxx[1]
      # blue = xxxxx[2]
      snow_list.append([x_site, y_site, X_shift, radius, 255, 255, 255])
  return snow_list
def draw_xue(snow_list: [], screen, bg_size: [], grand_has: set, grand_list: []):
  # 雪花列表循环
  # todo 空中的雪
  for i in range(len(snow_list)):
      # 绘制雪花,颜色、位置、大小
      pygame.draw.circle(screen, (snow_list[i][4], snow_list[i][5], snow_list[i][6]), 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]:
          # tmp = []
          snow_list[i][1] = random.randrange(-50, -10)
          snow_list[i][0] = random.randrange(0, bg_size[0])
          x = snow_list[i][0]
          y = bg_size[1]
          while (grand_has.__contains__(x * 10000 + y)):
              y = y - snow_list[i][3]
          grand_has.add(x * 10000 + y)
          grand_list.append(
              [x, y, snow_list[i][2], snow_list[i][3], snow_list[i][4], snow_list[i][5],
               snow_list[i][6]])
def draw_yanhua(yanhua_list: [], screen, bg_size: []):
  global fk_list
  for i in range(len(yanhua_list)):
      # 绘制雪花,颜色、位置、大小
      pygame.draw.circle(screen, (yanhua_list[i][4], yanhua_list[i][5], yanhua_list[i][6]), yanhua_list[i][:2],
                         yanhua_list[i][3] - 3)
      # 移动雪花位置(下一次循环起效)
      yanhua_list[i][0] += yanhua_list[i][2]
      yanhua_list[i][1] -= yanhua_list[i][3]
      # 如果雪花落出屏幕,重设位置
      if yanhua_list[i][1] <= 0:
          # tmp = []
          yanhua_list[i][1] = WIN_H
          yanhua_list[i][0] = random.randrange(0, bg_size[0])
      if yanhua_list[i][1] <= random.randint(200, 400):
          # todo 放烟花
          fk = Fireworks(yanhua_list[i][0], yanhua_list[i][1], -20, n=300, color=red_random(1, 150), v=10)
          fk_list.append(fk)
          yanhua_list[i][1] = WIN_H
          yanhua_list[i][0] = random.randrange(0, bg_size[0])
def show_shi(a: list, n, screen):
  i = 2 * n - 1
  j = 2 * n
  if i >= len(a):
      i = len(a) - 2
      j = len(a) - 1
  if i >= 0:
      myfont = pygame.font.SysFont('simHei', 30)
      textsurface = myfont.render(a[i], False, random_color(150, 255))
      screen.blit(textsurface, (WIN_W / 2, 30))
  if j >= 0:
      myfont = pygame.font.SysFont('simHei', 100)
      textsurface = myfont.render(a[j], False, red_random(1, 1))
      screen.blit(textsurface, (WIN_W / 2 - 200, 50))
def main():
  global show_n
  global fk_list
  bg_size = (WIN_W, WIN_H)
  screen = pygame.display.set_mode(bg_size)
  # bg_img = "./1.png"
  pygame.display.set_caption("新年快乐")
  # bg = pygame.image.load(bg_img)
  pygame.mixer.music.load('D:\\CloudMusic\\小时姑娘 - 霞光-《精灵世纪》片尾曲.mp3')
  grand_list = []
  font_values = ['新年快乐']
  grand_has = set()
  clock = pygame.time.Clock()
  yanhua_list = init_yanhua(bg_size)
  snow_list = init_xue(bg_size)
  # 游戏主循环
  while True:
      if not pygame.mixer.music.get_busy():
          pygame.mixer.music.play()
      for event in pygame.event.get():
          if event.type == pygame.QUIT:
              exit()
      screen.fill((0, 0, 0))
      draw_yanhua(yanhua_list, screen, bg_size)
      if len(fk_list) != 0:
          print(len(fk_list))
      # # 放烟花
      show_shi(font_values, 0, screen)
      for fk in fk_list:
          fk.run()
          for p in fk.p_list:
              x, y = fk.x + p[1] * math.cos(p[0]), fk.y + p[1] * math.sin(p[0])
              if random.random() < 0.055:
                  screen.set_at((int(x), int(y)), (255, 255, 255))
              else:
                  screen.set_at((int(x), int(y)), (int(fk.color[0]), int(fk.color[1]), int(fk.color[2])))
      tmp = []
      for fk in fk_list:
          for p in fk.p_list:
              x, y = fk.x + p[1] * math.cos(p[0]), fk.y + p[1] * math.sin(p[0])
              if y < WIN_H - 1000:
                  tmp.append(fk)
                  break
      fk_list = tmp
      min_height = 100000
      # todo 地上的积雪
      for i in range(len(grand_list)):
          if grand_list[i][0] < 375:
              min_height = min(min_height, grand_list[i][1])
      draw_xue(snow_list, screen, bg_size, grand_has, grand_list)
      for i in range(len(grand_list)):
          pygame.draw.circle(screen, (grand_list[i][4], grand_list[i][5], grand_list[i][6]), grand_list[i][:2],
                             grand_list[i][3] - 3)
      pygame.display.update()
      time_passed = clock.tick(50)
if __name__ == '__main__':
  main()

关于新年到教你如何用Python实现雪夜烟花景的文章就介绍至此,更多相关Python雪夜烟花景内容请搜索编程宝库以前的文章,希望以后支持编程宝库

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