Python新年炫酷烟花秀代码

 先介绍下 pygame 绘制烟花的基本原理，烟花从发射到绽放一共分为三个阶段：

1，发射阶段：在这一阶段烟花的形状是线性向上，通过设定一组大小不同、颜色不同的点来模拟“向上发射” 的运动运动，运动过程中 5个点被赋予不同大小的加速度，随着时间推移，后面的点会赶上前面的点，最终所有点会汇聚在一起，处于 绽放准备阶段；

2，烟花绽放：烟花绽放这个阶段，是由一个点分散多个点向不同方向发散，并且每个点的移动轨迹可需要被记录，目的是为了追踪整个绽放轨迹。

3，烟花凋零，此阶段负责描绘绽放后烟花的效果，绽放后的烟花，而在每一时刻点的下降速度和亮度（代码中也叫透明度）是不一样的，因此在代码里，将烟花绽放后将每个点赋予两个属性：分别为重力向量和生命周期，来模拟烟花在不同时期时不同的展现效果。

程序运行截图：

 完整程序代码：

import pygame
from random import randint, uniform, choice
import math
 
vector = pygame.math.vector2
gravity = vector(0, 0.3)
display_width = display_height = 800
 
 
trail_colours = [(45, 45, 45), (60, 60, 60), (75, 75, 75), (125, 125, 125), (150, 150, 150)]
dynamic_offset = 1
static_offset = 3
 
 
 
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):  # called every frame
        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
 
 
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:  # check if particle is outside explosion radius
            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])
 
 
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()
 
 
def main():
    pygame.init()
    pygame.font.init()
    pygame.display.set_caption("fireworks in pygame") # 标题
    background = pygame.image.load("img/1.png") # 背景
    myfont = pygame.font.font("img/simkai.ttf",80)
    myfont1 = pygame.font.font("img/simkai.ttf", 30)
 
    testsurface = myfont.render("新年快乐",false,(251, 59, 85))
    testsurface1 = myfont1.render("by:python代码大全", 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 fireworks
    running = true
 
    while 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())
        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:  # create new firework
            fireworks.append(firework())
 
        update(win, fireworks)
        # stats for fun
        # total_particles = 0
        # for f in fireworks:
        #    total_particles += len(f.particles)
 
        # print(f"fireworks: {len(fireworks)}\nparticles: {total_particles}\n\n")
 
    pygame.quit()
    quit()
 
main()

到此这篇关于python新年炫酷烟花秀代码的文章就介绍到这了,更多相关python新年烟花秀内容请搜索以前的文章或继续浏览下面的相关文章希望大家以后多多支持！