3.5 KiB
Code
~avatar avatar
Have you ever tried to making beat box sounds based on the light level? Let's try making a beatbox with code!
~
Let's start by adding a variable where you can store data. Name the variable as light
and ||variables:set||
the value of the variable to the ||input:light level||
block from the ||input:Input||
drawer. This will get the light level as some value between 0
(dark) and 255
(bright). The light is measured by using various LEDs from the screen. Your code will look like this:
let light = input.lightLevel();
We also want to play music when the A button is pressed. To do that, register an event handler that will execute whenever you click on the A button. Open the ||input:Input||
drawer and get out an ||input:on button A pressed||
block. Next, add a ||music:rest||
to play nothing for 1/16
of a beat. Pull the ||variables:set light||
block in there too. Your code should look like this:
input.onButtonPressed(Button.A, () => {
music.rest(music.beat(BeatFraction.Sixteenth));
let light = input.lightLevel();
});
Click on the ||logic:Logic||
drawer and find an ||logic:if||
block to use so that some of your code will run conditionally depending on whether a Boolean condition is either true
or false
. Go get the ||logic:0 < 0||
comparison block an put it in as the condition for the ||logic:if||
. Then insert the variable ||variables:light||
into the part of the inequality where the first 0
is. You'll find the variable ||variables:light||
in the ||variables:Variables||
drawer. Finally, insert 25
in the second part of the comparison instead of 0
. Modify your code so that it checks the light level like this:
- If
||logic:light < 25||
, play||music:ring tone||
forMiddle C
- If this condition is not
true
, play||music:ring tone||
forMiddle A
input.onButtonPressed(Button.A, () => {
music.rest(music.beat(BeatFraction.Sixteenth));
let light = input.lightLevel();
if (light < 25) {
music.ringTone(music.noteFrequency(Note.C));
}
else {
music.ringTone(music.noteFrequency(Note.A));
}
});
Now, we want to add more conditional statements by clicking on the (+) at the bottom of the if
. Add 5 ||logic:else if||
and 1 final ||logic:else||
inside the ||logic:if||
block structure. Set the comparison blocks inside the new conditionals as:
- If
||logic:light < 50||
, play||music:ring tone||
Middle D
- If
||logic:light < 100||
, play||music:ring tone||
Middle E
- If
||logic:light < 150||
, play||music:ring tone||
Middle F
- If
||logic:light < 180||
, play||music:ring tone||
Middle G
- If these conditions are not true, play
||music:ring tone||
Middle A
input.onButtonPressed(Button.A, () => {
music.rest(music.beat(BeatFraction.Sixteenth));
let light = input.lightLevel();
if (light < 25) {
music.ringTone(music.noteFrequency(Note.C));
}
else if (light < 50) {
music.ringTone(music.noteFrequency(Note.D));
}
else if (light < 100) {
music.ringTone(music.noteFrequency(Note.E));
}
else if (light < 150) {
music.ringTone(music.noteFrequency(Note.F));
}
else if (light < 180) {
music.ringTone(music.noteFrequency(Note.G));
}
else {
music.ringTone(music.noteFrequency(Note.A));
}
});
Alright, now click Download and run your code on the @boardname@!