4.4 KiB
rock paper scissors
~avatar avatar
input.onGesture(Gesture.Shake, () => {
let img = Math.random(3)
if (img == 0) {
basic.showLeds(`
# # # # #
# . . . #
# . . . #
# . . . #
# # # # #
`)
} else if (img == 1) {
basic.showLeds(`
. . . . .
. # # # .
. # # # .
. # # # .
. . . . .
`)
} else {
basic.showLeds(`
# # . . #
# # . # .
. . # . .
# # . # .
# # . . #
`)
}
})
In this project, you will build a rock-paper-scissor game with the BBC micro:bit
~
Materials needed
- your BBC micro:bit, that's it!
1
We want the micro:bit to choose rock, paper, or scissors when it is shaken. Let's begin by creating an on shake condition so the micro:bit will run code when it is shaken.
input.onGesture(Gesture.Shake, () => {
})
Next, create a variable and store pick random number from 0 to 2. On shake, a number will be randomly picked from 0-2. We will randomly display an image based on the random number returned.
input.onGesture(Gesture.Shake, () => {
let img = Math.random(3)
})
The micro:bit will look like it's showing 1 frame of the image by displaying the whole image when pick random is equal to 0. We can help the micro:bit randomly decide which image to use by pick random.
The micro:bit will randomly pick the image to display with show LEDs and the pick random block.
input.onGesture(Gesture.Shake, () => {
let img = Math.random(3)
if (img == 2) {
basic.showLeds(`
# # # # #
# . . . #
# . . . #
# . . . #
# # # # #
`)
}
})
2
The micro:bit will look like it's showing 1 frame of the image by displaying the whole image when pick random is equal to 1. We can help the micro:bit randomly decide which image to use by pick random. The micro:bit will randomly pick the image to display with show LEDs and the pick random function.
~avatar avatar
Click on the blue gearwheel to open the if editor. Drag and drop the else if block in the if block to add it.
~
input.onGesture(Gesture.Shake, () => {
let img = Math.random(3)
if (img == 0) {
basic.showLeds(`
# # # # #
# . . . #
# . . . #
# . . . #
# # # # #
`)
} else if (img == 1) {
basic.showLeds(`
. . . . .
. # # # .
. # # # .
. # # # .
. . . . .
`)
}
})
3
The micro:bit will look like it's showing 1 frame of the image by displaying the whole image when pick random is not equal to 0 and not equal to 1. We can help the micro:bit randomly decide which image to use by pick random. The micro:bit will randomly pick the image to display with show LEDs and the pick random function.
input.onGesture(Gesture.Shake, () => {
let img = Math.random(3)
if (img == 0) {
basic.showLeds(`
# # # # #
# . . . #
# . . . #
# . . . #
# # # # #
`)
} else if (img == 1) {
basic.showLeds(`
. . . . .
. # # # .
. # # # .
. # # # .
. . . . .
`)
} else {
basic.showLeds(`
# # . . #
# # . # .
. . # . .
# # . # .
# # . . #
`)
}
})
Your game is ready!
4
When the button A is pressed, increment the score by 1. You can select Game drawer then add change score by 1.
input.onButtonPressed(Button.A, () => {
game.addScore(1)
})
5
After incrementing the score, display the total number of wins you have.
input.onButtonPressed(Button.A, () => {
game.addScore(1)
basic.showString("WINS:")
basic.showNumber(game.score())
})
6
You have successfully tracked and displayed the number of wins on the micro:bit! However, what about losses?
Use the Game drawer to change score by -1 when button B is pressed. Here are all the blocks you will need:
input.onButtonPressed(Button.B, () => {
game.addScore(-1)
basic.showString("LOSSES:")
basic.showNumber(game.score())
})