1. 实现效果

2. 素材加载

2个图片和3个音频

shoot_image = pygame.image.load('shoot(已去底).jpg') # 加载拼接的发射图像
flower_image = pygame.image.load('flower.jpg')      # 加载拼接的烟花图 烟花不好去底
# 调整图像的像素为原图的1/2 因为图像相对于界面来说有些大
shoot_image = pygame.transform.scale(shoot_image, (shoot_image.get_size()[0]/2 ,shoot_image.get_size()[1]/2))
flower_image = pygame.transform.scale(flower_image, (flower_image.get_size()[0]/2 ,flower_image.get_size()[1]/2))
# 音频、音效
shoot_sound = pygame.mixer.Sound('shoot.mp3')
bomb_sound = pygame.mixer.Sound('bomb1.mp3')
bg_music = pygame.mixer.Sound('bg.mp3')

图像分块显示

# 每个部分的宽度
num_parts = 10  # 有10个shoot图
num_parts1 = 13 # 13个烟花
shoot_part_width = shoot_width // num_parts
flower_part_width = flower_width // num_parts1

3. 烟花发射

发射shoot图从底部往上，快到顶部变烟花flower，然后下落一段距离，最后消失。

4. 画面定格

处理鼠标点击事件以暂停和恢复动画

5. 完整代码

# 2024-12-01 Python简单的生日祝福烟花
import pygame # pip install pygame
import random
pygame.init()               # 初始化 pygame
WIDTH, HEIGHT = 750, 500    # 设置窗口尺寸
screen = pygame.display.set_mode((WIDTH, HEIGHT))
pygame.display.set_caption("生日烟花祝福") # 窗口标题
#bg_image = pygame.image.load('bg.jpg')
shoot_image = pygame.image.load('shoot(已去底).jpg') # 加载拼接的发射图像
flower_image = pygame.image.load('flower.jpg')      # 加载拼接的烟花图 烟花不好去底
# 调整图像的像素为原图的1/2 因为图像相对于界面来说有些大
shoot_image = pygame.transform.scale(shoot_image, (shoot_image.get_size()[0]/2 ,shoot_image.get_size()[1]/2))
flower_image = pygame.transform.scale(flower_image, (flower_image.get_size()[0]/2 ,flower_image.get_size()[1]/2))
# 音频、音效
shoot_sound = pygame.mixer.Sound('shoot.mp3')
bomb_sound = pygame.mixer.Sound('bomb1.mp3')
bg_music = pygame.mixer.Sound('bg.mp3')
bg_music.play(-1) # 播放背景音乐
# 获取图像的宽度和高度
shoot_width, shoot_height = shoot_image.get_size()
flower_width, flower_height = flower_image.get_size()
# 每个部分的宽度
num_parts = 10  # 有10个shoot图
num_parts1 = 13 # 13个烟花
shoot_part_width = shoot_width // num_parts
flower_part_width = flower_width // num_parts1
class Firework: # 定义烟花类
    def __init__(self, x):
        self.x = x              # 使用提供的x坐标
        self.shoot_y = HEIGHT   # shoot初始y坐标在底部
        self.flower_y = 0       # flower初始位置上方
        self.shoot_active = True
        self.flower_active = False
        self.shoot_part_index = random.randint(0, num_parts - 1)    # 随机选择shoot的部分索引
        self.flower_part_index = random.randint(0, num_parts - 1)   # 随机选择flower的部分索引
        self.drop_height = 10                                       # 下落的高度（在达到顶部后下落一点）
        self.is_dropping = False                                    # 是否开始下落
        self.alpha = 255                                            # 透明度控制
    def shoot(self):
        if self.shoot_active:
            # 绘制随机选择的 shoot 图像部分
            screen.blit(shoot_image, (self.x, self.shoot_y),(self.shoot_part_index * shoot_part_width, 0, shoot_part_width, shoot_height))
            self.shoot_y -= 5  # 更新 shoot 的位置 向上移动
            if self.shoot_y >= shoot_height:
                shoot_sound.play() # 播放发射音效
            if self.shoot_y <= 20:  # 当 shoot 达到接近窗口顶部时，触发下落
                self.shoot_active = False
                self.flower_active = True
                self.flower_y = self.shoot_y + self.drop_height  # flower 下落一点
                self.is_dropping = True  # 标记为开始下落
        if self.flower_active:   # 绘制随机选择的 flower 图像部分
            bomb_sound.play()
            flower_surface = pygame.Surface((flower_part_width, flower_height), pygame.SRCALPHA)  # 创建带透明度的 surface
            flower_surface.blit(flower_image, (0, 0),(self.flower_part_index * flower_part_width, 0, flower_part_width, flower_height))
            flower_surface.set_alpha(self.alpha) # 设置透明度
            screen.blit(flower_surface, (self.x, self.flower_y))
            if self.is_dropping:
                self.flower_y += 1  # flower 向下移动
            if self.alpha > 0:
                self.alpha -= 5  # 逐步降低透明度
            else:
                self.flower_active = False  # 透明度为0时消失
clock = pygame.time.Clock()
fireworks = []
running = True
paused = False  # 初始化暂停状态为 False
font = pygame.font.Font(None, 74)   # 设置字体, 使用默认字体, 大小为74
text_color = (255, 192, 203)        # 文字颜色粉红色
birthday_text = font.render("Happy Birthday", True, text_color)        # 文本"生日快乐"
text_rect = birthday_text.get_rect(center=(WIDTH // 2, HEIGHT - 150))  # 文本位置
while running:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        # 处理鼠标点击事件以暂停和恢复动画
        if event.type == pygame.MOUSEBUTTONDOWN:
            paused = not paused  # 切换暂停状态
    if not paused:
        # 每隔一段时间生成新烟花
        if random.random() < 0.01:  # 随机生成烟花 and len(fireworks) < 10
            # 随机选择 X 坐标，避免与已有烟花重叠
            new_firework_x = random.randint(0, WIDTH - shoot_part_width)
            overlap = any(abs(new_firework_x - firework.x) < shoot_part_width for firework in fireworks)
            if not overlap:     # 如果没有重叠，添加新烟花
                fireworks.append(Firework(new_firework_x))
        screen.fill((0, 0, 0))  # 填充黑色背景 #screen.blit(bg_image, (0, 0))
        for firework in fireworks:
            firework.shoot()
        screen.blit(birthday_text, text_rect) # 绘制生日文本
        pygame.display.flip()
        clock.tick(60) # 控制更新画面的速度
pygame.quit()