给我写一段地铁跑酷python代码

好的，以下是一个简单的地铁跑酷的Python代码：

import pygame
import random

# 初始化Pygame
pygame.init()

# 设置窗口大小和标题
screen_width = 800
screen_height = 600
screen = pygame.display.set_mode((screen_width, screen_height))
pygame.display.set_caption("地铁跑酷")

# 加载背景图片和主角图片
bg_image = pygame.image.load("background.png")
player_image = pygame.image.load("player.png")

# 设置主角的初始位置和移动速度
player_x = 50
player_y = screen_height - player_image.get_height() - 50
player_speed = 5

# 设置障碍物的初始位置和移动速度
obstacle_x = screen_width
obstacle_y = screen_height - 100
obstacle_speed = 10
obstacle_width = 50
obstacle_height = 50

# 设置得分和字体
score = 0
font = pygame.font.SysFont("Arial", 30)

# 游戏主循环
running = True
while running:
    # 处理事件
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False

    # 渲染背景和主角
    screen.blit(bg_image, (0, 0))
    screen.blit(player_image, (player_x, player_y))

    # 移动主角
    keys = pygame.key.get_pressed()
    if keys[pygame.K_UP]:
        player_y -= player_speed
    if keys[pygame.K_DOWN]:
        player_y += player_speed

    # 移动障碍物
    obstacle_x -= obstacle_speed

    # 如果障碍物移出屏幕，重新设置位置和速度
    if obstacle_x < -obstacle_width:
        obstacle_x = screen_width
        obstacle_y = random.randint(0, screen_height - obstacle_height - 50)
        obstacle_speed += 1
        score += 1

    # 渲染障碍物
    pygame.draw.rect(screen, (255, 0, 0), (obstacle_x, obstacle_y, obstacle_width, obstacle_height))

    # 检测碰撞
    player_rect = pygame.Rect(player_x, player_y, player_image.get_width(), player_image.get_height())
    obstacle_rect = pygame.Rect(obstacle_x, obstacle_y, obstacle_width, obstacle_height)
    if player_rect.colliderect(obstacle_rect):
        running = False

    # 渲染得分
    score_text = font.render("得分：" + str(score), True, (255, 255, 255))
    screen.blit(score_text, (10, 10))

    # 更新屏幕
    pygame.display.update()

# 退出Pygame
pygame.quit()

这段代码会创建一个简单的地铁跑酷游戏，你需要使用方向键控制主角上下移动，并躲避障碍物。每次成功避开障碍物，你的得分会加一。如果撞到障碍物，游戏就会结束。