10 Super Car

import pygame
import random
pygame.init()

#General Variables
running = True
window = pygame.display.set_mode((400,600))
crashed = False
clock = pygame.time.Clock()
randx = random.randrange(0, 300)
randy = 0
marky = 600
score = 0
hiscore = 0
speed = 5

pygame.display.set_caption('Race car')

class car(pygame.sprite.Sprite):
    def __init__(self,location):
        pygame.sprite.Sprite.__init__(self)
        self.image = pygame.image.load('racecar.png').convert_alpha()
        self.x_change = 0
        self.x = 200
        self.y = 430

#Draws the road markings
def road_markings(marky):
    for i in reversed(range(0, 1800,120)):
        pygame.draw.rect(window, (255, 255, 255),(190, marky-i, 20, 100))
    return

#Waits for a key press
def wait():
    while (pygame.event.wait().type != pygame.KEYDOWN): pass
    return

#Prints fonts on the screen
def fontprint(passtext,x,y):
    font = pygame.font.Font(None,32)
    text1=font.render(str(passtext), 1, (0, 255, 255))
    window.blit(text1, (x, y))
    return

car1 = car([200,430])
#Display Graphics before game starts
fontprint('GET READY!',50,300)
pygame.display.update()
pygame.time.wait(2000)


#The Loop
while running:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
    if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_LEFT:
                car1.x_change = -5
            elif event.key == pygame.K_RIGHT:
                car1.x_change = 5
    if event.type == pygame.KEYUP:
        if event.key == pygame.K_LEFT or event.key == pygame.K_RIGHT:
            car1.x_change = 0
    if randy > 570:
        randy = -100
        randx = random.randrange(0, 300)
        score = score + 1
        speed = speed + 0.1
    randy = randy + speed
    car1.x += car1.x_change
    window.fill((0, 0, 0))
    road_markings(marky)
    marky = marky + speed
    if marky > 1200:
        marky = 600
    rect1 = pygame.draw.rect(window, (255, 255, 0),(randx, randy, 100, 30))
    window.blit(car1.image,[car1.x,car1.y])
    rect2 = pygame.Rect(car1.x,car1.y,70,150)
    fontprint(score,10,10)
    pygame.display.update()
    #No slipping off to the side.
    if rect2.colliderect(rect1) or car1.x<0 or car1.x>330:
        window.fill((0, 0, 0))
        fontprint("Game Over. You scored: "+str(score),10,200)
        if score > hiscore:
            hiscore = score
            fontprint('You have a new high Score !!',10,250)
        else:
            fontprint("High Score: "+str(hiscore),10,250)

        pygame.display.update()
        randx = random.randrange(0, 300)
        randy = 0
        marky = 600
        score = 0
        speed = 5
        car1.x = 200
        wait()
    clock.tick(60)