python实现烟花小程序

Python  /  管理员 发布于 7年前   288

本文实例为大家分享了python实现烟花小程序的具体代码，供大家参考，具体内容如下

'''FIREWORKS SIMULATION WITH TKINTER*self-containing code*to run: simply type python simple.py in your console*compatible with both Python 2 and Python 3*Dependencies: tkinter, Pillow (only for background image)*The design is based on high school physics, with some small twists only for aesthetics purpose import tkinter as tk#from tkinter import messagebox#from tkinter import PhotoImagefrom PIL import Image, ImageTkfrom time import time, sleepfrom random import choice, uniform, randintfrom math import sin, cos, radians# gravity, act as our constant g, you can experiment by changing itGRAVITY = 0.05# list of color, can choose randomly or use as a queue (FIFO)colors = ['red', 'blue', 'yellow', 'white', 'green', 'orange', 'purple', 'seagreen','indigo', 'cornflowerblue']Generic class for particlesparticles are emitted almost randomly on the sky, forming a round of circle (a star) before falling and getting removedfrom canvasAttributes: - id: identifier of a particular particle in a star - x, y: x,y-coordinate of a star (point of explosion) - vx, vy: speed of particle in x, y coordinate - total: total number of particle in a star - age: how long has the particle last on canvas - color: self-explantory - cv: canvas - lifespan: how long a particle will last on canvasclass part: def __init__(self, cv, idx, total, explosion_speed, x=0., y=0., vx = 0., vy = 0., size=2., color = 'red', lifespan = 2, **kwargs):  self.id = idx  self.x = x  self.y = y  self.initial_speed = explosion_speed  self.vx = vx  self.vy = vy  self.total = total  self.age = 0  self.color = color  self.cv = cv  self.cid = self.cv.create_oval(   x - size, y - size, x + size,   y + size, fill=self.color)  self.lifespan = lifespan def update(self, dt):  self.age += dt  # particle expansions  if self.alive() and self.expand():   move_x = cos(radians(self.id*360/self.total))*self.initial_speed   move_y = sin(radians(self.id*360/self.total))*self.initial_speed   self.cv.move(self.cid, move_x, move_y)   self.vx = move_x/(float(dt)*1000)  # falling down in projectile motion  elif self.alive():   move_x = cos(radians(self.id*360/self.total))   # we technically don't need to update x, y because move will do the job   self.cv.move(self.cid, self.vx + move_x, self.vy+GRAVITY*dt)   self.vy += GRAVITY*dt  # remove article if it is over the lifespan  elif self.cid is not None:   cv.delete(self.cid)   self.cid = None # define time frame for expansion def expand (self):  return self.age <= 1.2 # check if particle is still alive in lifespan def alive(self):  return self.age <= self.lifespanFirework simulation loop:Recursively call to repeatedly emit new fireworks on canvasa list of list (list of stars, each of which is a list of particles)is created and drawn on canvas at every call, via update protocol inside each 'part' object def simulate(cv): t = time() explode_points = [] wait_time = randint(10,100) numb_explode = randint(6,10) # create list of list of all particles in all simultaneous explosion for point in range(numb_explode):  objects = []  x_cordi = randint(50,550)  y_cordi = randint(50, 150)  speed = uniform (0.5, 1.5)     size = uniform (0.5,3)  color = choice(colors)  explosion_speed = uniform(0.2, 1)  total_particles = randint(10,50)  for i in range(1,total_particles):   r = part(cv, idx = i, total = total_particles, explosion_speed = explosion_speed, x = x_cordi, y = y_cordi,     vx = speed, vy = speed, color=color, size = size, lifespan = uniform(0.6,1.75))   objects.append(r)  explode_points.append(objects) total_time = .0 # keeps undate within a timeframe of 1.8 second while total_time < 1.8:  sleep(0.01)  tnew = time()  t, dt = tnew, tnew - t  for point in explode_points:   for item in point:    item.update(dt)  cv.update()  total_time += dt # recursive call to continue adding new explosion on canvas root.after(wait_time, simulate, cv)def close(*ignore): """Stops simulation loop and closes the window.""" global root root.quit() if __name__ == '__main__': root = tk.Tk() cv = tk.Canvas(root, height=600, width=600) # use a nice background image image = Image.open("./image1.jpg")#背景照片路径自行选择，可以选择酷炫一点的，看起来效果会#更好 photo = ImageTk.PhotoImage(image) cv.create_image(0, 0, image=photo, anchor='nw') cv.pack() root.protocol("WM_DELETE_WINDOW", close) root.after(100, simulate, cv) root.mainloop()

注意：这里需要安装tkinter，安装过程：

step1：

>>> import _tkinter # with underscore, and lowercase 't'

step2：

>>> import Tkinter # no underscore, uppercase 'T' for versions prior to V3.0

>>> import tkinter # no underscore, lowercase 't' for V3.0 and later

step3：

>>> Tkinter._test() # note underscore in _test and uppercase 'T' for versions prior to V3.0 

>>> tkinter._test() # note underscore in _test and lowercase 'T' for V3.0 and later

然后就可以运行了，在代码中有一个背景照片部分，路径可自行选择！我这里就不修改了。

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。