Creating a Colorful Fireworks Display with Python and Pygame

In recent years many places have banned real fireworks; this article shows how to recreate a fireworks show using Python and the pygame library.

Step 1: Import required modules

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

Step 2: Define window dimensions

WIN_W = 2200
WIN_H = 1300

Step 3: Set timing, display frequency, and color list

t1 = 0.18  # time flow speed
show_n = 0
show_frequency = 0.0015  # higher value means higher fireworks frequency
color_list = [
    [255, 50, 50],
    [50, 255, 50],
    [50, 50, 255],
    [255, 255, 50],
    [255, 50, 255],
    [50, 255, 255],
    [255, 255, 255]
]

Step 4: Initialize pygame and the music mixer

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

Step 5: Create a resizable window and set its title

screen = pygame.display.set_mode((WIN_W, WIN_H), pygame.RESIZABLE, 32)
pygame.display.set_caption("五彩烟花大放送")

Step 6: Load background music (optional)

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

Step 7: Define the Fireworks 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

Step 8: Create a list of fireworks instances

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))
# (additional instances omitted for brevity)
clock = pygame.time.Clock()

Step 9: Main loop that updates and renders the fireworks

# Game main loop
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))
    for i, fk in enumerate(fk_list):
        if not fk.is_show:
            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)

The script produces a colorful, animated fireworks display that can be run on any system with Python and pygame installed.