pxt-calliope/docs/lessons/bop-it/activity.md
Sam El-Husseini e3975e65e5 pxt-microbit Accessibility PR ()
* Accessibility changes
2017-09-07 13:42:08 -07:00

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# bop it challenges
a game similar to "Simon Says" with the @boardname@.
## Before we get started
Complete the following guided tutorial. Your code should look like this:
```typescript
let action = 0;
function newAction() {}
input.onButtonPressed(Button.A, () => {
if (action == 0) {
game.addScore(1);
newAction();
}
})
input.onLogoDown(() => {
if (action == 1) {
game.addScore(1);
newAction();
}
})
input.onGesture(Gesture.Shake, () => {
if (action == 2) {
game.addScore(1);
newAction();
}
})
input.onButtonPressed(Button.B, () => {
basic.showNumber(game.score(), 150);
basic.pause(2000);
newAction();
})
```
## Challenge 1
Now let's add some more types of instructions for the player to follow. Let's add `PRESS PIN 0`.
Change the global variable `action` to `math->random(4)` so that we can add a new **IF** statement that checks if `action=3`. If it does, display instructions to press pin 0.
```typescript
let action = 0;
export function newAction() {
action = Math.random(4)
if (action == 0) {
basic.showString("PUSH A", 150) // ***
}
if (action == 1) {
basic.showString("LOGO DOWN", 150) // ***
}
if (action == 2) {
basic.showString("SHAKE", 150) // ***
}
if (action == 3) {
basic.showString("PRESS PIN 0", 150) // ***
}
}
```
## Challenge 2
Now let's implement `PRESS PIN 0` in the main. Create a condition of `input->on pin pressed("P0")` that will add one to the score and calls the method `new action`.
```typescript
let action = 0;
export function newAction() {
// ...
}
input.onButtonPressed(Button.B, () => {
basic.showNumber(game.score(), 150)
basic.pause(2000)
newAction()
})
input.onPinPressed(TouchPin.P0, () => {
if (action == 3) {
game.addScore(1)
newAction()
}
})
```
## Challenge 3
Add `POINT ME NORTH` to the list of possible commands.