Pygame -在MOUSEBUTTONDOWN事件上获得一颗子弹来启动屏幕

import pygame
import sys

pygame.init()

screen_width = 800
screen_height = 600
screen = pygame.display.set_mode((screen_width, screen_height))
pygame.display.set_caption("启动屏幕")

class Bullet(pygame.sprite.Sprite):
    def __init__(self):
        super().__init__()
        self.image = pygame.Surface((10, 10))
        self.image.fill((255, 0, 0))  # 子弹为红色
        self.rect = self.image.get_rect()
        self.rect.center = (screen_width // 2, screen_height // 2)  # 子弹初始位置为屏幕中心

    def update(self):
        self.rect.y -= 5  # 子弹向上移动的速度

    def draw(self):
        screen.blit(self.image, self.rect)

bullet = Bullet()
all_sprites = pygame.sprite.Group()
all_sprites.add(bullet)

running = True
while running:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        elif event.type == pygame.MOUSEBUTTONDOWN:
            if event.button == 1:  # 鼠标左键按下
                bullet = Bullet()
                all_sprites.add(bullet)

    all_sprites.update()
    screen.fill((0, 0, 0))  # 清空屏幕
    all_sprites.draw(screen)
    pygame.display.flip()

pygame.quit()
sys.exit()