pygame两条红线 左边红线x不用加红线基础宽度

import sys
import time,sched
from threading import Timer
import datetime
import numpy as np
import pygame
from pygame import surface

import threading


pygame.init()  # 初始化pygame
size = width, height = 600, 600  # 设置窗口大小
screen = pygame.display.set_mode(size)  # 显示窗口
color = (255, 255, 255)
fcclock = pygame.time.Clock()
'''zsx = 220
zsy = 100
zenx = 70
zeny = 600
ysx = 320
ysy = 100
yenx = 570
yeny = 600

############################################
f = False
l=False
r=False

cjshuzu = []
xsshuzu = []
o = 5


def you(screen, ystx, ysty, yenx, yeny):
    hei = (0, 0, 0)
    start = (ystx, ysty)
    end = (yenx, yeny)
    width = 1222
    pygame.draw.line(screen, hei, start, end, 10)


def zuo(screen, zstx, zsty, zenx, zeny):
    hei = (0, 0, 0)
    start = (zstx, zsty)
    end = (zenx, zeny)
    width = 1262
    pygame.draw.line(screen, hei, start, end, 10)  # aaline抗锯齿
'''
lux=0
luy=600
lw=600
while True:  # 死循环确保窗口一直显示
    s = sched.scheduler(time.time, time.sleep)

    screen.fill(color)

    # pygame.draw.polygon(screen, (0, 244, 0), p)
    fcclock.tick(9)  # 设置图像刷新率，如果刷新率太高，图像闪5的太厉害

    for event in pygame.event.get():  # 遍历所有事件
        if event.type == pygame.QUIT:  # 如果单击关闭窗口，则退出
            sys.exit()
            pygame.quit()
            exit()
        keys = pygame.key.get_pressed()
        if keys[pygame.K_UP]:
            f = True
        # print('啦啦啦')
        if keys[pygame.K_LEFT]:
            l = True
        if keys[pygame.K_RIGHT]:
            r = True
        if event.type == pygame.KEYUP:
            f = False
            l=False

        if event.type == pygame.KEYDOWN:
            r = False
    '''zuo(screen, 230, 105, -60, 610)
    you(screen, 310, 105, 720, 610)'''
    #天
    pygame.draw.rect(screen, (116, 194, 243), (0, 0, 620, 300), 0)
    # 绿地
    pygame.draw.rect(screen, (0, 244, 0), (0, 300, 620, 400), 0)
    # 路
    #pygame.draw.rect(screen, (220, 224, 234), (lux, luy, lw, 20), 0)
    for i in range(150):#画150条灰色线，每根线宽度是2.
        y=i*2#每次y减少2*i，也就是宽度的距离
        x=i*2#x每次加2*i，让左边路变得越来越窄
        w=i*4#w每次-4*i，让右边的路越来越窄
        zw=35#红色变基础宽度
        zx=i*0.2
        pygame.draw.rect(screen, (220, 224, 234), (lux+x, luy-y, lw-w, 2), 0)
        #pygame.draw.rect(screen, (220, 224, 234), (lux, luy - y, lw, 2), 0)
        pygame.draw.rect(screen, (250, 0, 0), (lux + x, luy - y, zw-zx , 2), 0)
        #左边红色路：x需要在灰色路基础上-一个红色路的基础宽度，y不变。宽度在基础zw上每次-zx宽度。让红色路越来越窄
        pygame.draw.rect(screen, (250, 0, 0), (lw-x , luy - y, zw-zx , 2), 0)
    dcar = pygame.image.load("d3.png")
    car = pygame.transform.scale(dcar, (80, 80))  # 远大近小
    screen.blit(car, (250, 450))

    pygame.display.update()

    pygame.display.flip()  # 更新全部显示