123 lines
2.9 KiB
Markdown
123 lines
2.9 KiB
Markdown
# magic 8 activity
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Welcome! This activity will help you create a magic 8 ball on the micro:bit. Let's get started!
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Show a string to instruct the user how to play Magic 8! The magic 8 ball can only answer true or false questions.
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```blocks
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basic.showString("ASK A QUESTION")
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```
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Display the number 8.
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```blocks
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basic.showString("ASK A QUESTION")
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basic.showNumber(8)
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```
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Create a condition for when the micro:bit is shaken. Then use the block `clear screen` to clear the 8 from the display.
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```blocks
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basic.showString("ASK A QUESTION")
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basic.showNumber(8)
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input.onGesture(Gesture.Shake, () => {
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basic.clearScreen()
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});
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```
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Create a variable of type number called **randomNumber**. Set **randomNumber** to a random number with a limit of 2. Remember the random function in the math library, picks a random number from 0 to the limit, but not including the limit unless it is 0.
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```blocks
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basic.showString("ASK A QUESTION")
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basic.showNumber(8)
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input.onGesture(Gesture.Shake, () => {
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basic.clearScreen()
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let randomNumber = Math.random(3)
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});
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```
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Create an if statement for the condition `if randomNumber = 2`. If **randomNumber** is 2, display the string 'Yes'
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```blocks
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basic.showString("ASK A QUESTION")
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basic.showNumber(8)
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input.onGesture(Gesture.Shake, () => {
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basic.clearScreen();
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let randomNumber = Math.random(3);
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if (randomNumber == 2) {
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basic.showString("YES");
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}
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});
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```
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Create an if statement for the condition `if randomNumber = 1`. If randomNumber is 1, display the string 'No'
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```blocks
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basic.showString("ASK A QUESTION")
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basic.showNumber(8)
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input.onGesture(Gesture.Shake, () => {
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basic.clearScreen()
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let randomNumber = Math.random(3)
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if (randomNumber == 2) {
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basic.showString("YES")
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} else if (randomNumber == 1) {
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basic.showString("NO")
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}
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})
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```
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If **randomNumber** is not 2 or 1, it must be 0. This is the else condition. If **randomNumber** is 0, display the string 'I don't know'
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```blocks
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basic.showString("ASK A QUESTION")
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basic.showNumber(8)
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input.onGesture(Gesture.Shake, () => {
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basic.clearScreen()
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let randomNumber = Math.random(3)
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if (randomNumber == 2) {
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basic.showString("YES")
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} else if (randomNumber == 1) {
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basic.showString("NO")
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} else {
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basic.showString("I DON'T KNOW")
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}
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})
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```
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Display the number 8 so users know they can ask the magic 8 ball another question!
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```blocks
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basic.showString("ASK A QUESTION")
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basic.showNumber(8)
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input.onGesture(Gesture.Shake, () => {
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basic.clearScreen()
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let randomNumber = Math.random(3)
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if (randomNumber == 2) {
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basic.showString("YES")
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} else if (randomNumber == 1) {
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basic.showString("NO")
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} else {
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basic.showString("I DON'T KNOW")
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}
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basic.showNumber(8)
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})
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```
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### ~avatar avatar
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Excellent, you're ready to continue with the [challenges](/lessons/magic-8/challenges)!
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### ~
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