Help with pixel art end math issue's

Arcade
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128

@foxrii you can change the palette by going to the assets tab of the editor (next to blocks and javascript).

there’s a button for it on the left-hand side

1 Like
129

@richard… Xd i wanted to make a extension for fun yesterday but i wanted to add a single namespace but with like… ill just show you
image
stuff like that

130

@YuHayate use the //% subcategory=whatever annotation on your functions. It works just like the group annotation but puts the blocks into a subcategory instead.

You can also rearrange the order of subcategories with an annotation on the namespace like this:

//% subcategories='["number", "boolean", "string"]'
2 Likes
131

alright thx

1 Like
132

what about default values on blocks like this?
image
like i want there to be a option to if you want to give that test a id or not
the block only work when i have it like this
image
i tryed to make it like in js but that does not work ether

//% block="foo || $a"
export function foo(a: string = "default") {
// insert code here
}
133

@YuHayate

//% a.defl="whatever"
1 Like
134

image
hmm
image

135

i may have found why, still confused tho
image

136

ah, right. i forgot we don’t support default values for string parameters. also, any parameter after the || in a block definition needs to be optional.

/**
 * This is a good example. We can't specify the default value of
 * the string in the function definition but we can use an if
 * statement to set it ourselves
 */
//% block="good example || $id"
//% id.defl="default"
function goodExample(id?: string) {
    if (!id) id = "default";
}

/**
 * The examples below are both invalid. The first one won't
 * compile correctly from blocks to typescript and the second
 * one won't compile at all
 */

//% block="bad example || $id"
//% id.defl="default"
function badExample(id: string) {
}

//% block="bad example || $id"
//% id.defl="default"
function anotherBadExample(id = "default") {
}
137

@richard . a bug?
image

138

any ideas what causes it?

139

@YuHayate when that happens, it almost always means you messed up one of your block definitions. In this case, looks like you misspelled the shadow block id for one of your functions:

image

140

Xd, thx, i didnt even know that is sent errors to the console

142

hey @richard, I’m always asking you for help it seems, ig I’m not good at finding information myself loI

anyways, how would i make a block that is like an if statement? or a for loop
like shown bellow
image

is this possible to do in an extension?

1 Like
143

making a block like an if-statement is not possible. blocks made by extensions can have at most one statement input (one “mouth”)

making a block like a for-loop is totally possible though! here’s one for example:


//% weight=100 color=#0fbc11 icon=""
namespace custom {
    //% blockId=my_custom_for_loop
    //% block="for $index from 0 to $upperBound"
    //% draggableParameters=reporter
    //% upperBound.defl=4
    //% handlerStatement=true
    export function forLoop(upperBound: number, handler: (index: number) => void) {
        for (let i = 0; i <= upperBound; i++) {
            handler(i);
        }
    }
}

and here’s the block that produces:

image

2 Likes
144

also, no worries! i’m always happy to answer questions when i can

1 Like
145

what about two handlers?
is that posible?

146

@YuHayate nope! one handler max

147

ok : (

148

hey @richard just wanted to know what im doing wrong here.

function play8BitSound() {
    let effects: number[][] = [[440, 0, 4550], [330, 0, 100]...];
    for (let i = 0; i < effects.length; i++) {
        let effect = effects[i];
        music.play(music.createSoundEffect(
            WaveShape.Square,
            effect[0], // startHz
            effect[0], // endHz (same as startHz)
            effect[1], // startVolume
            effect[1], // endVolume (same as startVolume)
            effect[2], // duration
            SoundExpressionEffect.None,
            InterpolationCurve.Linear
        ), music.PlaybackMode.UntilDone);
    }
}