48 lines
1.3 KiB
Markdown
48 lines
1.3 KiB
Markdown
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# Ignition
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Explore sensor events and sensor status.
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## Activity 1
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Wait for a touch sensor press or ultrasonic object detection. Show an expression on the screen when they happen.
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```blocks
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sensors.touch1.onEvent(ButtonEvent.Pressed, function () {
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brick.showImage(images.eyesDizzy)
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})
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sensors.ultrasonic4.onEvent(UltrasonicSensorEvent.ObjectDetected, function () {
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brick.showImage(images.eyesTiredMiddle)
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})
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brick.showImage(images.eyesSleeping)
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```
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## Activity 2
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Play some motor sounds if touch sensor `1` is pressed at the same moment when and object comes close.
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```blocks
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while (true) {
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if (sensors.touch1.wasPressed() &&
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sensors.ultrasonic4.distance() < 10) {
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music.playSoundEffectUntilDone(sounds.mechanicalMotorStart)
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music.playSoundEffectUntilDone(sounds.mechanicalMotorIdle);
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}
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pause(1);
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}
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```
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## Activity 3
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Play some motor sounds if touch sensor `1` is pressed when both the `enter` button is pressed on the brick and an object comes close.
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```blocks
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while (true) {
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if (sensors.ultrasonic4.distance() < 10 &&
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sensors.touch1.wasPressed() &&
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brick.buttonEnter.wasPressed()) {
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music.playSoundEffectUntilDone(sounds.mechanicalMotorStart)
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music.playSoundEffectUntilDone(sounds.mechanicalMotorIdle);
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}
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pause(1);
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}
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```
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