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Case 05：炫彩灯光

简介​

让Cutebot智能赛车向前行驶，并随机显示灯光颜色。

准备编程环境​

准备编程环境请参考：准备编程环境

示例代码​

from cutebot import *
from random import *
from time import *

# 创建Cutebot类的实例
cutebot = Cutebot()

# 设置cutebot智能赛车以50%的速度向前行驶
cutebot.set_speed(50,50)
# 初始化彩虹灯
cutebot.init_rainbow_leds()

# 循环控制cutebot智能赛车的车头灯和示廓灯随机显示灯光颜色
while True:
    R = randint(0, 255)
    G = randint(0, 255)
    B = randint(0, 255)
    cutebot.set_light(RGB.left,R,G,B)
    cutebot.set_light(RGB.right,R,G,B)
    cutebot.rainbow_leds[0] = (R,G,B)
    cutebot.rainbow_leds[1] = (R,G,B)
    sleep(1)

代码详解​

  1. 导入程序所需要的模块：cutebot模块包含对Cutebot智能赛车操作的类和函数，time模块包含对时间操作的函数，random模块包含产生随机数的函数。
from cutebot import *
from random import *
from time import *
  1. 创建Cutebot类的实例。
cutebot = Cutebot()
  1. 设置cutebot智能赛车以50%的速度向前行驶，初始化彩虹灯。
cutebot.set_speed(50,50)
cutebot.init_rainbow_leds()
  1. 循环控制cutebot智能赛车的车头灯和示廓灯随机显示灯光颜色
while True:
    R = randint(0, 255)
    G = randint(0, 255)
    B = randint(0, 255)
    cutebot.set_light(RGB.left,R,G,B)
    cutebot.set_light(RGB.right,R,G,B)
    cutebot.rainbow_leds[0] = (R,G,B)
    cutebot.rainbow_leds[1] = (R,G,B)
    sleep(1)

实验结果​

开启电源后，cutebot智能赛车向前行驶，在行驶过程中随机切换车头灯和示廓灯的灯光颜色。

思考​

如何让示廓灯根据cutebot智能赛车的行驶速度自动切换颜色呢？