有没有可能在发生事件时更新pygame绘图属性？

import pygame
from pygame.locals import *

# 初始化Pygame
pygame.init()

# 创建窗口
screen = pygame.display.set_mode((800, 600))
pygame.display.set_caption("Pygame Event Example")

# 定义绘图属性
x = 400
y = 300
color = (255, 0, 0)

# 事件循环
running = True
while running:
    # 处理事件
    for event in pygame.event.get():
        if event.type == QUIT:
            running = False
        elif event.type == KEYDOWN:
            if event.key == K_LEFT:
                # 更新绘图属性
                x -= 10
            elif event.key == K_RIGHT:
                # 更新绘图属性
                x += 10
            elif event.key == K_UP:
                # 更新绘图属性
                y -= 10
            elif event.key == K_DOWN:
                # 更新绘图属性
                y += 10

    # 绘制图形
    screen.fill((0, 0, 0))
    pygame.draw.circle(screen, color, (x, y), 50)
    pygame.display.flip()

# 退出Pygame
pygame.quit()