'''小城漫步

要求如下：

1. ‘白日街景’、‘夜晚街景’两图滚动出现

2. ‘走1’、‘走2’两图，实现博克斯走路动效

3. 按下键盘右键，背景滚动'''
import pgzrun
from pgzhelper import *

WIDTH = 960
HEIGHT = 720

# 创建背景角色
bg1 = Actor('白日街景', topleft=(0, 0))
bg2 = Actor('夜晚街景', topleft=(960, 0))
# 创建博克斯角色
people = Actor('走1', (200, 500))
people.images = ['走1', '走2']
# 初始化速度
speed = 10


def draw():
    bg1.draw()
    bg2.draw()
    people.draw()


def update():
    if keyboard.right:
        bg1.x -= speed
        bg2.x -= speed
    if bg1.right <= 0:
        bg1.left = bg2.right
    if bg2.right <= 0:
        bg2.left = bg1.right


def change_image():
    people.next_image()


clock.schedule_interval(change_image, 0.5)

pgzrun.go()