目录

前言

环境准备

代码编写

效果展示

前言

python实现浪漫的烟花特效
现在很多地方都不能放烟花了，既然看不到，
那作为程序猿的我们还不能自己用代码做一个吗？
今天就带大家用代码做一个烟花特效吧。

环境准备

这里使用到的库有：pygame（用于游戏的编写）、random（用于产生随机范围数）、math（用于数学计算），期中pygame属于第三方模块，如果未安装该模块可以使用命令：pip install pygame 进行安装。

pip install pygame

代码编写

全局变量：

vector = pygame.math.Vector2# 重力变量gravity = vector(0, 0.3)# 控制窗口的大小DISPLAY_WIDTH = DISPLAY_HEIGHT = 800# 颜色选项trail_colours = [(45, 45, 45), (60, 60, 60), (75, 75, 75), (125, 125, 125), (150, 150, 150)]dynamic_offset = 1static_offset = 3

 Firework : 整体部分

class Firework:    def __init__(self):        # 随机颜色        self.colour = (randint(0, 255), randint(0, 255), randint(0, 255))        self.colours = (            (randint(0, 255), randint(0, 255), randint(0, 255)),            (randint(0, 255), randint(0, 255), randint(0, 255)),            (randint(0, 255), randint(0, 255), randint(0, 255)))        self.firework = Particle(randint(0, DISPLAY_WIDTH), DISPLAY_HEIGHT, True,     self.colour)  # Creates the firework particle        self.exploded = False        self.particles = []        self.min_max_particles = vector(100, 225)    def update(self, win):  # 每帧调用        if not self.exploded:            self.firework.apply_force(gravity)            self.firework.move()            for tf in self.firework.trails:                tf.show(win)            self.show(win)            if self.firework.vel.y >= 0:                self.exploded = True                self.explode()        else:            for particle in self.particles:                particle.apply_force(vector(gravity.x + unifORM(-1, 1) / 20, gravity.y / 2 + (randint(1, 8) / 100)))                particle.move()                for t in particle.trails:                    t.show(win)                particle.show(win)    def explode(self):        # amount 数量        amount = randint(self.min_max_particles.x, self.min_max_particles.y)        for i in range(amount):            self.particles.append(Particle(self.firework.pos.x, self.firework.pos.y, False, self.colours))    def show(self, win):        pygame.draw.circle(win, self.colour, (int(self.firework.pos.x), int(self.firework.pos.y)), self.firework.size)    def remove(self):        if self.exploded:            for p in self.particles:                if p.remove is True:                    self.particles.remove(p)            if len(self.particles) == 0:                return True            else:                return False

Particle：烟花粒子（包含轨迹）

class Particle:    def __init__(self, x, y, firework, colour):        self.firework = firework        self.pos = vector(x, y)        self.origin = vector(x, y)        self.radius = 20        self.remove = False        self.explosion_radius = randint(5, 18)        self.life = 0        self.acc = vector(0, 0)        # trail variables        self.trails = []  # stores the particles trail objects        self.prev_posx = [-10] * 10  # stores the 10 last positions        self.prev_posy = [-10] * 10  # stores the 10 last positions        if self.firework:            self.vel = vector(0, -randint(17, 20))            self.size = 5            self.colour = colour            for i in range(5):                self.trails.append(Trail(i, self.size, True))        else:            self.vel = vector(uniform(-1, 1), uniform(-1, 1))            self.vel.x *= randint(7, self.explosion_radius + 2)            self.vel.y *= randint(7, self.explosion_radius + 2)            # 向量            self.size = randint(2, 4)            self.colour = choice(colour)            # 5 个 tails总计            for i in range(5):                self.trails.append(Trail(i, self.size, False))    def apply_force(self, force):        self.acc += force    def move(self):        if not self.firework:            self.vel.x *= 0.8            self.vel.y *= 0.8        self.vel += self.acc        self.pos += self.vel        self.acc *= 0        if self.life == 0 and not self.firework:  # 检查粒子的爆炸范围            distance = math.sqrt((self.pos.x - self.origin.x) ** 2 + (self.pos.y - self.origin.y) ** 2)            if distance > self.explosion_radius:                self.remove = True        self.decay()        self.trail_update()        self.life += 1    def show(self, win):        pygame.draw.circle(win, (self.colour[0], self.colour[1], self.colour[2], 0), (int(self.pos.x), int(self.pos.y)),                           self.size)    def decay(self):  # random decay of the particles        if 50 > self.life > 10:  # early stage their is a small chance of decay            ran = randint(0, 30)            if ran == 0:                self.remove = True        elif self.life > 50:            ran = randint(0, 5)            if ran == 0:                self.remove = True    def trail_update(self):        self.prev_posx.pop()        self.prev_posx.insert(0, int(self.pos.x))        self.prev_posy.pop()        self.prev_posy.insert(0, int(self.pos.y))        for n, t in enumerate(self.trails):            if t.dynamic:                t.get_pos(self.prev_posx[n + dynamic_offset], self.prev_posy[n + dynamic_offset])            else:                t.get_pos(self.prev_posx[n + static_offset], self.prev_posy[n + static_offset])

 Trail：烟花轨迹，本质上是一个点 。创建 Trail 类，定义 show 方法绘制轨迹 、get_pos  实时获取轨迹坐标

class Trail:    def __init__(self, n, size, dynamic):        self.pos_in_line = n        self.pos = vector(-10, -10)        self.dynamic = dynamic        if self.dynamic:            self.colour = trail_colours[n]            self.size = int(size - n / 2)        else:            self.colour = (255, 255, 200)            self.size = size - 2            if self.size < 0:                self.size = 0    def get_pos(self, x, y):        self.pos = vector(x, y)    def show(self, win):        pygame.draw.circle(win, self.colour, (int(self.pos.x), int(self.pos.y)), self.size)def update(win, fireworks):    for fw in fireworks:        fw.update(win)        if fw.remove():            fireworks.remove(fw)    pygame.display.update()

主函数部分：

def main():    pygame.init()    pygame.font.init()    pygame.display.set_caption("祝您新年快乐")  # 标题    background = pygame.image.load("./5.png")  # 背景    sound_wav = pygame.mixer.music.load("2.mp3")    pygame.mixer.music.play()pygame.init()# 加载背景音乐'''pygame.mixer.music.load("./res/音乐文件名")# 循环播放背景音乐pygame.mixer.music.play(-1)# 停止背景音乐pygame.mixer.music.stop()# 加载音效boom_sound = pygame.mixer.Sound("./res/音效名")# 播放音效boom_sound.play()boom_sound.stop()myfont = pygame.font.Font("simkai.TTF", 80)myfont1 = pygame.font.Font("simkai.ttf", 30)testsurface = myfont.render("虎虎生威", False, (0, 0, 0), (220, 20, 60))testsurface1 = myfont1.render("", False, (251, 59, 85))'''# pygame.image.load("")win = pygame.display.set_mode((DISPLAY_WIDTH, DISPLAY_HEIGHT))# win.blit(background)clock = pygame.time.Clock()fireworks = [Firework() for i in range(2)]  # create the first fireworksrunning = Truewhile running:    clock.tick(60)    for event in pygame.event.get():        if event.type == pygame.QUIT:            running = False        if event.type == pygame.KEYDOWN:  # Change game speed with number keys            if event.key == pygame.K_1:  # 按下 1                fireworks.append(Firework())            if event.key == pygame.K_2:  # 按下 2 加入10个烟花                for i in range(10):                    fireworks.append(Firework())            if event.key == pygame.K_3:  # 按下 3 加入100个烟花                for i in range(100):                    fireworks.append(Firework())    win.fill((20, 20, 30))  # draw background    #win.blit(background, (0, 0))    #win.blit(testsurface, (200, 30))    #win.blit(testsurface1, (520, 80))    if randint(0, 20) == 1:  # 创建新的烟花        fireworks.append(Firework())    update(win, fireworks)pygame.quit()quit()

运行游戏：

if __name__ == 'main':    main()

效果展示

来源地址：https://blog.csdn.net/veratata/article/details/128565954