如果我想让底下绿色方块也移动躲避红色掉落 该怎么修改代码

要让底部的绿色方块也能移动，你可以在游戏循环中添加对底部方块移动的逻辑。下面是修改后的代码：

import pygame
import random

# 初始化 Pygame
pygame.init()

# 设置窗口的尺寸
width = 800
height = 600
window = pygame.display.set_mode((width, height))
pygame.display.set_caption("简单游戏")

# 设置颜色
black = (0, 0, 0)
white = (255, 255, 255)
red = (255, 0, 0)
green = (0, 255, 0)

# 设置游戏结束标志和分数
game_over = False
score = 0

# 设置玩家的初始位置和移动速度
player_x = width // 2
player_y = height - 50
player_speed = 5

# 设置底部方块的初始位置和移动速度
bottom_block_x = width // 2
bottom_block_y = height - 30
bottom_block_speed = 3

# 设置顶部方块的初始位置和移动速度
top_block_x = random.randint(0, width)
top_block_y = random.randint(50, 200)
top_block_speed = 3

# 游戏循环
while not game_over:
    # 处理事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            game_over = True

    # 获取键盘按键状态
    keys = pygame.key.get_pressed()
    if keys[pygame.K_LEFT]:
        player_x -= player_speed
    if keys[pygame.K_RIGHT]:
        player_x += player_speed

    # 更新玩家和方块的位置
    bottom_block_x += bottom_block_speed
    if bottom_block_x >= width or bottom_block_x <= 0:
        bottom_block_speed *= -1

    top_block_y += top_block_speed
    if top_block_y > height:
        top_block_x = random.randint(0, width)
        top_block_y = random.randint(50, 200)
        score += 1

    # 检测碰撞
    if (player_x < bottom_block_x + 50 and player_x + 50 > bottom_block_x and
            player_y < bottom_block_y + 20 and player_y + 50 > bottom_block_y):
        game_over = True

    if (player_x < top_block_x + 20 and player_x + 50 > top_block_x and
            player_y < top_block_y + 20 and player_y + 50 > top_block_y):
        game_over = True

    # 绘制背景和物体
    window.fill(black)
    pygame.draw.rect(window, green, (player_x, player_y, 50, 50))
    pygame.draw.rect(window, red, (bottom_block_x, bottom_block_y, 50, 20))
    pygame.draw.rect(window, red, (top_block_x, top_block_y, 20, 20))

    # 绘制分数
    font = pygame.font.Font(None, 30)
    text = font.render("Score: " + str(score), True, white)
    window.blit(text, (10, 10))

    # 更新屏幕
    pygame.display.update()

# 游戏结束后退出 Pygame
pygame.quit()

在代码中，我添加了一个底部方块（绿色方块）并设置了其初始位置和移动速度。在游戏循环中，我更新了底部方块的位置，并检测玩家方块与底部方块的碰撞。如果玩家方块与底部方块发生碰撞，游戏结束。

希望这次修改能满足你的需求！如果你还有其他问题，请随时提问。