圣诞树粒子特效代码py

创建圣诞树粒子特效的Python代码通常涉及动画、图形库（如Pygame或PIL）以及随机数生成。下面是一个简单的示例，使用Pygame库来绘制基本的圣诞树形状并添加一些随机移动的“雪花”粒子：

import pygame
import random

# 初始化pygame
pygame.init()

# 设置窗口大小
screen_width = 800
screen_height = 600
screen = pygame.display.set_mode((screen_width, screen_height))

# 定义颜色
white = (255, 255, 255)
green = (0, 255, 0)

# 定义圣诞树形状
def draw_tree():
    trunk_width = 30
    trunk_height = 100
    trunk_x = screen_width // 2 - trunk_width // 2
    trunk_y = screen_height - trunk_height
    
    # 画树干
    pygame.draw.rect(screen, green, (trunk_x, trunk_y, trunk_width, trunk_height))
    
    # 画树枝
    branch_length = 200
    branches_count = 7
    for i in range(branches_count):
        angle = i * (2 * 3.14 / branches_count) + random.uniform(-0.1, 0.1)
        branch_top_y = trunk_y + trunk_height / 2 + branch_length * math.sin(angle)
        branch_top_x = trunk_x + trunk_width / 2 + branch_length * math.cos(angle)
        pygame.draw.line(screen, white, (trunk_x, trunk_y), (branch_top_x, branch_top_y), 10)

# 粒子雪花
particle_size = 5
snow_particles = []
for _ in range(100):
    snow_particles.append({
        'x': random.randint(0, screen_width),
        'y': random.randint(-50, 0),
        'dx': random.uniform(-2, 2),
        'dy': random.uniform(-2, 2),
        'size': particle_size,
        'color': (random.randint(0, 255), random.randint(0, 255), random.randint(0, 255))
    })

while True:
    # 清除屏幕
    screen.fill(white)
    
    # 绘制圣诞树
    draw_tree()
    
    # 移动和绘制粒子
    for particle in snow_particles:
        particle['y'] += particle['dy']
        if particle['y'] > screen_height:
            particle.pop('y')
        pygame.draw.circle(screen, particle['color'], (int(particle['x']), int(particle['y'])), particle['size'])
    
    # 更新显示
    pygame.display.flip()
    
    # 检查事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            quit()