如何使用鼠标单击python3移动矩形面片

import pygame

pygame.init()

width = 800
height = 600
window = pygame.display.set_mode((width, height))
pygame.display.set_caption("移动矩形面片")

rect_width = 100
rect_height = 100
rect_x = width // 2 - rect_width // 2
rect_y = height // 2 - rect_height // 2

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

        if event.type == pygame.MOUSEBUTTONDOWN:
            if event.button == 1:  # 左键单击
                rect_x, rect_y = event.pos[0] - rect_width // 2, event.pos[1] - rect_height // 2

    window.fill((255, 255, 255))  # 清空窗口
    pygame.draw.rect(window, (0, 0, 255), (rect_x, rect_y, rect_width, rect_height))  # 绘制矩形
    pygame.display.flip()  # 更新窗口显示

pygame.quit()