A

[WestHasky]

import pygame
import numpy as np
import random

pygame.init()

愛心公式

t = np.linspace(0, 2 * np.pi, 1000)
#可以把30替換成不同數字調整愛心大小
x = 16 * np.sin(t) ** 3 * 30 # 調整愛心
y = (13 * np.cos(t) - 5 * np.cos(2 * t) - 2 * np.cos(3 * t) - np.cos(4 * t)) * 30

煙火粒子

class FireworkParticle:
def init(self, pos, color):
self.pos = pos #位置
self.velocity = [random.uniform(-3, 3), random.uniform(-3, 3)] # 隨機速度
self.color = color
self.lifetime = random.randint(30, 60) # 隨機粒子燃燒時間
self.size = random.randint(2, 5)

def update(self):
    # 更新位置和重力效果
    self.pos[0] += self.velocity[0]
    self.pos[1] += self.velocity[1]
    self.velocity[1] += 0.05  # 重力
    self.lifetime -= 1
    self.size = max(self.size - 0.1, 1)  # 粒子逐漸變小

def draw(self, screen):
    if self.lifetime > 0:
        pygame.draw.circle(screen, self.color, (int(self.pos[0]), int(self.pos[1])), int(self.size))

煙火效果

class Firework:
def init(self):
self.color = random.choice([(255, 0, 0), (255, 100, 100), (255, 200, 200),
(0, 255, 0), (0, 0, 255), (255, 255, 0), (255, 0, 255)]) # 顏色(隨機選擇)
self.pos = [random.randint(200, 1000), 950] # 調整煙火的起始位置
self.velocity = random.uniform(-8, -15) # 上升速度
self.particles = [] # 儲存爆炸的煙火例子
self.exploded = False #是否爆炸

def update(self):
    # 讓煙火上升並爆炸
    if not self.exploded:
        self.pos[1] += self.velocity
        self.velocity += 0.2  # 重力加速度使速度變慢
        if self.velocity >= 0:
            self.exploded = True  # 當到達頂點時爆炸
            self.create_particles()
    else:
        for particle in self.particles:
            particle.update() #更新粒子狀態
        self.particles = [p for p in self.particles if p.lifetime > 0] #移除消失粒子

def create_particles(self):
    # 隨機生成愛心形狀的粒子
    for xi, yi in zip(x, y):
        px = self.pos[0] + xi
        py = self.pos[1] - yi
        self.particles.append(FireworkParticle([px, py], self.color))

def draw(self, screen):
    if not self.exploded:
        pygame.draw.circle(screen, self.color, (int(self.pos[0]), int(self.pos[1])), 5)
    else:
        for particle in self.particles:
            particle.draw(screen)

#視窗大小
screen = pygame.display.set_mode((1200, 1200))
pygame.display.set_caption("Love Fireworks")
clock = pygame.time.Clock()

running = True
fireworks = []
text_alpha = 0 #文字透明度
alpha_increment = 1 # 文字每幀增加的透明度值
show_text = False #控制文字是否顯示
text_display_time = 180 #文字偵數時間
frames = 0 #跟蹤文字時長

while running:
screen.fill((0, 0, 0)) #背景黑色 可更改

# 當生成新煙火時顯示文字
if random.randint(1, 15) == 1:  #隨機煙火出現頻率   
    fireworks.append(Firework())
    show_text = True  


for firework in fireworks:
    firework.update()
    firework.draw(screen)


if show_text:
    text_alpha = min(255, text_alpha + alpha_increment) 
    frames += 1  #偵數累加
    if frames > text_display_time:  
        show_text = False

font = pygame.font.Font(None, 200)
text = font.render("I love you", True, (255, 0, 0))
text.set_alpha(text_alpha)  
text_rect = text.get_rect(center=(600, 600))  #視窗設定在1200,600代表文字設定在視窗中間
screen.blit(text, text_rect)

#刷新畫面
pygame.display.flip()
clock.tick(60) #偵樹設在每秒60偵

#消除煙火
fireworks = [fw for fw in fireworks if not (fw.exploded and len(fw.particles) == 0)]

for event in pygame.event.get():
    if event.type == pygame.QUIT:
        running = False

pygame.quit()