Fireworks delivery and code analysis of pygame in python

When fireworks bloom, they are gorgeous, and suddenly want to use Python to make a fireworks. This example is relatively simple. Let's take a look at the renderings:

Step 1: module import

import pygame, math, time, random, os
from sys import exit

Step 2: define the relevant initial

win (w = width, h = height)

WIN_W = 2200
WIN_H = 1300
 Define time, display, frequency

t1 = 0.18 × time flow rate
show_n = 0
 Show frequency = 0.0015: fireworks bloom frequency, the higher the value, the higher the frequency

List of fireworks colors, randomly selected below

color_list = [
                [255, 50, 50],
                [50, 255, 50],
                [50, 50, 255],
                [255, 255, 50],
                [255, 50, 255],
                [50, 255, 255],
                [255, 255, 255]
             ]

Initialize pygame and music mixer

pygame.init()
pygame.mixer.init()

Create a window with pygame.RESIZABLE window size and title

screen = pygame.display.set_mode((WIN_W, WIN_H),pygame.RESIZABLE, 32)
pygame.display.set_caption("Colorful fireworks")

Background music, customizable

sound_wav = pygame.mixer.music.load("123.mp3")
pygame.mixer.music.play()

Fireworks = fireworks, define main class

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 again(self):
        self.is_show = True
        self.x = random.randint(WIN_W // 2 - 350, WIN_W // 2 + 350)
        self.y = random.randint(int(WIN_H / 2), int(WIN_H * 3 / 5))
        self.vy = -40 * (random.random() * 0.4 + 0.8) - self.vy * 0.2
        self.color = color_list[random.randint(0, len(color_list) - 1)].copy()
        n = len(self.p_list)
        self.p_list = []
        for i in range(n):
            self.p_list.append([random.random() * 2 * math.pi, 0, self.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

Fireworks list

fk_list = []
fk_list.append(Fireworks(300, 300, -20, n=100, color=[0, 255, 0], v=10))
fk_list.append(Fireworks(300, 300, -20, n=200, color=[0, 0, 255], v=11))
fk_list.append(Fireworks(300, 300, -20, n=200, color=[0, 0, 255], v=12))
fk_list.append(Fireworks(300, 300, -20, n=500, color=[0, 0, 255], v=12))
fk_list.append(Fireworks(300, 300, -20, n=600, color=[0, 0, 255], v=13))
fk_list.append(Fireworks(300, 300, -20, n=700, color=[255, 0, 0], v=15))
fk_list.append(Fireworks(300, 300, -20, n=800, color=[255, 255, 0], v=18))
​
clock = pygame.time.Clock()

Main circulation of fireworks:

# Game main cycle
while True:
    if not pygame.mixer.music.get_busy():
        pygame.mixer.music.play()
    for event in pygame.event.get():
        #pygame this can't be less, otherwise exit is still in circulation
        if event.type == pygame.QUIT:
            exit()
​
    screen.fill((0, 0, 0))
​
    # let off fireworks
    for i, fk in enumerate(fk_list):
        if not fk.is_show:
            fk.is_show = False
            if random.random() < show_frequency * (len(fk_list) - show_n):
                show_n += 1
                fk.again()
            continue
        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])))
​
    pygame.display.update()
​
    time_passed = clock.tick(50)

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Tags: Programming Python less network

Posted on Sun, 05 Apr 2020 22:37:23 -0400 by ryanwood4