30ab1156c7
* local commit * More reaction fixex * Local commit * Convert 'rock paper scissors' to a make project * Revert the 'reaction time' stuff * Add image for project page * Add finished make image in last step
161 lines
3.5 KiB
Markdown
161 lines
3.5 KiB
Markdown
# Rock Paper Scissors
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## Step 1
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We want the @boardname@ to choose rock, paper, or scissors when you shake it.
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Place a ``||input:on shake||`` block so when you shake the @boardname@, it will run part of a program.
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```blocks
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input.onGesture(Gesture.Shake, () => {
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})
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```
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## Step 2
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Add a ``tool`` variable to store a random number computed with ``||math:pick random||``.
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When you shake the @boardname@, it should pick a random number from `0` to `2`
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and store it in the variable `tool`. (This variable is named `tool` because
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rock, paper, and scissors are the tools you use to challenge your friends!)
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```blocks
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let tool = 0;
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input.onGesture(Gesture.Shake, () => {
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tool = Math.random(3)
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})
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```
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In a later step, each of the possible numbers (`0`, `1`, or `2`) is matched to its own picture. The picture is shown on the LEDs when its number is picked.
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## Step 3
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Place an ``if`` block under the ``||math:pick random||`` and
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check whether ``tool`` is equal to ``0``.
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```blocks
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let tool = 0;
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input.onGesture(Gesture.Shake, () => {
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let tool = Math.random(3)
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if (tool == 0) {
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}
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})
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```
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## Step 4
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In the ``if`` block, place a ``||basic:show leds||`` block that shows a
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picture of a piece of paper.
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```blocks
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let tool = 0;
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input.onGesture(Gesture.Shake, () => {
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let tool = Math.random(3)
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if (tool == 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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}
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})
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```
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## Step 5
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Add an ``else if`` block to the ``if`` block and check whether ``tool``
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is equal to ``1``.
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Click on the gearwheel icon to open up the ``if`` editor; then drag and drop an ``else if`` block in the ``if`` editor.
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```blocks
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let tool = 0;
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input.onGesture(Gesture.Shake, () => {
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let tool = Math.random(3)
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if (tool == 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 (tool == 1) {
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}
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})
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```
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## Step 6
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Place a ``||basic:show leds||`` block under the else if and draw a **rock** image on the screen.
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```blocks
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let tool = 0;
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input.onGesture(Gesture.Shake, () => {
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let tool = Math.random(3)
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if (tool == 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 (tool == 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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}
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})
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```
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## Step 7
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Add a ``||basic:show leds||`` block with a picture of scissors to the ``else`` part.
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You don't need to check if `tool` is `2` because `2` is the only number left out of `0`, `1`, and `2`.
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That's why you can use an ``else`` instead of an ``else if``.
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```blocks
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let tool = 0;
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input.onGesture(Gesture.Shake, () => {
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let tool = Math.random(3)
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if (tool == 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 (tool == 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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```
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## Step 8
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Your game is ready! Gather your friends and play Rock Paper Scissors! |