python中简单RGB动画的问题

import pygame

# 初始化Pygame
pygame.init()

# 设置窗口尺寸和标题
width, height = 800, 600
screen = pygame.display.set_mode((width, height))
pygame.display.set_caption("RGB Animation")

# 定义RGB颜色和初始位置
red = (255, 0, 0)
green = (0, 255, 0)
blue = (0, 0, 255)
x, y = 0, 0

# 动画循环
running = True
while running:
    # 处理退出事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False

    # 清空屏幕
    screen.fill((0, 0, 0))

    # 绘制矩形
    pygame.draw.rect(screen, red, (x, y, 100, 100))
    pygame.draw.rect(screen, green, (x + 100, y, 100, 100))
    pygame.draw.rect(screen, blue, (x + 200, y, 100, 100))

    # 更新位置
    x += 1
    if x > width:
        x = 0

    # 刷新屏幕
    pygame.display.flip()

# 退出Pygame
pygame.quit()