石头、剪刀、布

第 1 步：制作

它是什么？

用两个micro:bit玩这个经典的游戏，同时了解选择、变量和随机数。

这两个视频向你展示了你将制作什么以及如何编程

工作原理

• 石头、剪刀、布是一个适合两人玩的经典游戏。 You and a partner shake your fists 3 times and then make gestures at random to show a rock, paper or scissors. Rock beats scissors, scissors beat paper and paper beats rock (it wraps the rock!).
• When the micro:bit accelerometer detects a shake movement, it sets the variable tool to a random number: 0, 1 or 2.
• We use 0 because computers start counting at 0, and it’s good to remember that 0 is a number!
• The program uses selection to decide what image to show on the LED display. If the random number was 0, it shows a rock icon, if it was 1 it shows the icon representing paper. If it wasn’t 0 or 1, it must be 2 because we instructed the micro:bit to only pick random numbers between 0 and 2, so in that case it shows scissors.

所需材料

• 两个micro:bit（或者MakeCode模拟器）
• MakeCode 或者 Python 编辑器
• 电池盒（选配）
• a partner to play with

第 2 步：编程

第3步：完善

• Draw your own icons for rock, paper, scissors.
• Think of other tools that could replace rock, paper and scissors or invent new rules.
• Use the micro:bit radio function to make a game that knows if you won or lost by communicating with your friend’s micro:bit.