71 lines
2.3 KiB
Markdown
71 lines
2.3 KiB
Markdown
# Activity: Rock, paper, scissors
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For this activity, each student will need a micro:bit.
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Everyone will create the same program, the classic rock paper scissor game.
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## Introduce activity
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* Have students recall the classic rock paper scissors game.
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* What are the rules of the game? What are the conditionals?
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>Example: If Player A gets rock, and Player B gets scissors, Then Player A wins.
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* Have students write the pseudocode for how to play the game on the micro:bit.
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>Example pseudocode:<br/>
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On button A press: choose random number from 0-2
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If random number = 0, then display rock icon,
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Else if random number = 1, then display paper icon,
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Else display scissors icon.
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* Point out that because there are only three possibilities, we don’t need to do a separate check to see if random number = 2. So we just use an else.
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## micro:bit
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* Working from the specifications, have students work in pairs to try to code a Rock Paper Scissors game on their own.
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* If students get stuck, there is a tutorial at [rock, paper, scissors](/projects/rock-paper-scissors) (steps 1 through 4), that leads students step-by-step through the process of coding a working rock paper scissor game for their micro:bit.
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* Let them play the game against their program.
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## Ideas for Mods
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* Add a way to keep score: Steps 5 through 7 in the tutorial
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* Mod the game to use different images or to add more options like ‘Rock Paper Scissors Lizard Spock’, Step 8 in the tutorial
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Here's an example mod:
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```blocks
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let hand = 0
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input.onGesture(Gesture.Shake, () => {
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hand = Math.randomInt(3)
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if (hand == 0) {
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basic.showLeds(`
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# # # # #
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# . . . #
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# . . . #
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# . . . #
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# # # # #
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`)
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} else if (hand == 1) {
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basic.showLeds(`
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. . . . .
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. # # # .
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. # # # .
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. # # # .
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. . . . .
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`)
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} else {
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basic.showLeds(`
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# # . . #
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# # . # .
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. . # . .
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# # . # .
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# # . . #
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`)
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}
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})
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input.onButtonPressed(Button.A, () => {
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game.addScore(1)
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basic.pause(100)
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basic.showString("Wins:")
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basic.showNumber(game.score())
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})
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```
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