=================导入包====================

”’导入pygame,Python Pygame 是一款专门为开发和设计 2D 电子游戏而生的软件包，
它支 Windows、Linux、Mac OS 等操作系统，具备良好的跨平台性。”’
import pygame
from random import randint, uniform, choice
import math

===========首先设置全局变量====================

vector = pygame.math.Vector2

重力变量

gravity = vector(0, 0.3)

管制窗口的大小

DISPLAY_WIDTH = DISPLAY_HEIGHT = 800

色彩选项

trail_colours = [(45, 45, 45), (60, 60, 60), (75, 75, 75), (125, 125, 125), (150, 150, 150)]
dynamic_offset = 1
static_offset = 3

=======Firework : 整体局部；================

class Firework:

def __init__(self):
    # 随机色彩
    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（蕴含轨迹）======================

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:  # 查看粒子的爆炸范畴
        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，实质上是一个点 。创立 Trail 类，定义 show 办法绘制轨迹 、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=======================

def main():

pygame.init()
pygame.font.init()
pygame.display.set_caption("祝您新年快乐")  # 题目
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)

进行背景音乐

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 = 股指期货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 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 退出10个烟花
            for i in range(10):
                fireworks.append(Firework())
        if event.key == pygame.K_3:  # 按下 3 退出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:  # 创立新的烟花
    fireworks.append(Firework())
update(win, fireworks)

pygame.quit()
quit()
if name == ‘main’:

main()

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