19.working_with_sprite_settting_the_boundaries_updated.py

#use LEFT or RIGHT button to move the wheel
import pygame,sys
from pygame.locals import*
pygame.init()
clock=pygame.time.Clock()
screen=pygame.display.set_mode((400,400))
lightgreen=(144, 238,144)

x=50
y=300
velocity=5

sprite=[pygame.image.load('data/wheel/1.png'),pygame.image.load('data/wheel/2.png'),
pygame.image.load('data/wheel/3.png'),pygame.image.load('data/wheel/4.png'),pygame.image.load('data/wheel/5.png'),
pygame.image.load('data/wheel/6.png'),pygame.image.load('data/wheel/7.png'),pygame.image.load('data/wheel/8.png'),
pygame.image.load('data/wheel/9.png'),pygame.image.load('data/wheel/10.png')]

n=0
game_running=True
while game_running:
    clock.tick(60)      
    for event in pygame.event.get():
        if event.type==QUIT:            
            pygame.quit()
            sys.exit()
        
    keys=pygame.key.get_pressed()
    if keys[pygame.K_RIGHT] or keys[pygame.K_d]:
        if x+velocity<340:                #the display width=400px
            x+=velocity
        else:
            x=x
        n+=1
        if n>9:
            n=0
    elif keys[pygame.K_LEFT] or keys[pygame.K_a]:
        if x-velocity>0:
            x-=velocity
        else:
            x=x
        n-=1
        if n<0:
            n=9


    screen.fill(lightgreen)
    screen.blit(sprite[n],(x,y))
    pygame.display.update()