OpenJDK something something | latcord | Page 1

grand fern Feb 27, 2026, 3:01 AM

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I downloaded fabric api, that problem is solved. But OpenJDK... that's where shit gets funny. Where can I download that, and how do I implement this? The mod in question that is causing this issue is "slowcraft", a Fabric 1.21.1 mod. But I changed the mod version to 1.20.1, and am using "Sinytra Connector"

quaint glenBOT Feb 27, 2026, 3:01 AM

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Once your ticket has been resolved, please close it with </ticket close:1054771505520717835> command!

sand junco Feb 27, 2026, 3:18 AM

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OpenJDK 64-bit server VM (java) 17 can be obtained here:
https://www.oracle.com/java/technologies/javase/jdk17-archive-downloads.html

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Thus, a higher version would be here:

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https://www.java.com/en/download/manual.jsp

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2ndly, is the version of fabric-api you're using the fabric version, or the forge version? Sinytra connector DOES let fabric mods run on forge, yes, but if a fabric mod has a mod dependancy, it's looking for the fabric version of that dependancy. So it's expecting the fabric version of fabric-api.

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3rdly, none of this is a KubeJS issue.

grand fern Feb 27, 2026, 3:31 AM

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sand junco 3rdly, none of this is a KubeJS issue.

sorry, but I also dunno any mc tech supports

sand junco Feb 27, 2026, 3:32 AM

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Well, at least I'm in a good and helpful mood. But I would suggest maybe the Sinytra Connector's official support instead, next time.

grand fern Feb 27, 2026, 3:32 AM

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fair 'nough

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also I doubt the mod needs dependencies
https://modrinth.com/mod/slowcraft

Modrinth

Slowcraft - Minecraft Mod

A library for creating low-tech Progressive Crafting items, inspired by Better Than Wolves.

grand fern Feb 27, 2026, 4:33 AM

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I downloaded both links, but nothing changed

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so fuck it, I have a new idea

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any idea if it's possible to essentially recreate this mod through kubejs?

sand junco Feb 27, 2026, 8:01 PM

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Before you give up, by having multiple java editions installed, you now have to select which one to launch minecraft with.

If you're using Prism launcher, for example, you can go to your pack settings, go to the java tab, click detect, and then select the java version you want to use.

Now, do I know if it's possible to recreate this mod...? Well:

//startup script
StartupEvents.registry("items", event => {
  var max_steps_to_craft_fake = 5
  event.create("fake_slowcraft:incomplete_diamond_pickaxe")
    .unstackable()
    .maxDamage(max_steps_to_craft_fake)
    .use((itemstack,level,entity) => true)
    .useAnimation("crossbow")    // I only know of "bow" and "crossbow" for valid options here
    .useDuration((itemstack) => 10)  // in ticks. So this is half a second per step
    .finishUsing((itemstack,level,entity) => {
      if (itemstack.getDamageValue() == max_steps_to_craft_fake)
        return Item.of("minecraft:diamond_pickaxe")
      itemstack.setDamageValue(itemstack.getDamageValue() +1)
      return itemstack
    }
})

//server script
ServerEvents.recipes((event) => {
  event.replaceOutput({output:"minecraft:diamond_pickaxe"},"minecraft:diamond_pickaxe",Item.of("fake_slowcraft:incomplete_diamond_pickaxe"))
})

Let me know how that works out.

grand fern Mar 1, 2026, 2:32 AM

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holy shit

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I had to change a little bit

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but this works

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//startup
StartupEvents.registry('item', event => {
  var max_steps_to_craft_fake = 5
  event.create("kubejs:incomplete_diamond_pickaxe")
    .unstackable()
    .maxDamage(max_steps_to_craft_fake)
    .use((itemstack,level,entity) => true)
    .useAnimation("crossbow")    // I only know of "bow" and "crossbow" for valid options here
    .useDuration((itemstack) => 10)  // in ticks. So this is half a second per step
    .finishUsing((itemstack,level,entity) => {
      if (itemstack.getDamageValue() == max_steps_to_craft_fake)
        return Item.of("minecraft:diamond_pickaxe")
      itemstack.setDamageValue(itemstack.getDamageValue() +1)
      return itemstack
    }
)})

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and

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//server
ServerEvents.recipes((event) => {
  event.replaceOutput({output:"minecraft:diamond_pickaxe"},"minecraft:diamond_pickaxe",Item.of("kubejs:incomplete_diamond_pickaxe"))
})

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but this works flawlessly

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thank you a thousand

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one thing I'm trying to also figure out is how to implement audio

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StartupEvents.registry('item', event => {
  var max_steps_to_craft_fake = 30
  event.create("kubejs:incomplete_diamond_pickaxe")
    .unstackable()
    .maxDamage(max_steps_to_craft_fake)
    .use((itemstack,level,entity) => true)
    SoundEvents.BLOCK_BAMBOO_HIT
    .useAnimation("crossbow")    // I only know of "bow" and "crossbow" for valid options here
    .useDuration((itemstack) => 100)  // in ticks. So this is half a second per step
    .finishUsing((itemstack,level,entity) => {
      if (itemstack.getDamageValue() == max_steps_to_craft_fake)
        return Item.of("minecraft:diamond_pickaxe")
      itemstack.setDamageValue(itemstack.getDamageValue() +1)
      return itemstack
    }
)})

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but this doesn't work

sand junco Mar 1, 2026, 5:38 AM

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Oh, yeah, I see where I missed a bracket or two.

So I see why inserting SoundEvents inside like that doesn't work. You're interupting the chain of .function().function() with a non ".", non-function. And then the .useAnimation() is now trying to run off the BLOCK_BAMBOO_HIT object. I've been struggling with sound myself, but it would probably go inside the .finishUsing() event block.

grand fern Mar 3, 2026, 12:02 AM

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Ight bet, in like an hour ima try it out

grand fern Mar 4, 2026, 12:53 AM

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no sadly it didn't work 🙁

sand junco Mar 4, 2026, 1:08 AM

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Try it like this

StartupEvents.registry('item', event => {
  var max_steps_to_craft_fake = 30
  event.create("kubejs:incomplete_diamond_pickaxe")
    .unstackable()
    .maxDamage(max_steps_to_craft_fake)
    .use((itemstack,level,entity) => true)
    .useAnimation("crossbow")    // I only know of "bow" and "crossbow" for valid options here
    .useDuration((itemstack) => 100)  // in ticks. So this is half a second per step
    .finishUsing((itemstack,level,entity) => {
      if (itemstack.getDamageValue() == max_steps_to_craft_fake)
        return Item.of("minecraft:diamond_pickaxe")
      level.runCommandSilent(`execute in ${level.dimension.toString()} run playsound minecraft:block.bamboo.hit player @a ${entity.x} ${entity.y} ${entity.z}`)
      itemstack.setDamageValue(itemstack.getDamageValue() +1)
      return itemstack
    }
)})

grand fern Mar 5, 2026, 11:53 PM

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Will try this shortly

grand fern Mar 8, 2026, 1:59 AM

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Holy mother of fuck it works

quaint glenBOT Mar 8, 2026, 1:59 AM

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quaint glen Once your ticket has been resolved, please close it with </ticket close:10547715...

Ticket re-opened!

grand fern Mar 8, 2026, 5:37 PM

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I lied another problem has arrised

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I'm tryna make em only have a percent chance to work sometimes

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this what I came up with but doesn't work

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StartupEvents.registry('item', event => {
  var sifting_recipe = 28

    event.create("kubejs:manual_dirt_sifting")
    .unstackable()
    .maxDamage(sifting_recipe)
    .use((itemstack,level,entity) => true)
    .useAnimation("brush")
    .useDuration((itemstack) => 30)
    .finishUsing((itemstack,level,entity) => {
      if (itemstack.getDamageValue() == sifting_recipe)
        return Item.of("kubejs:manual_sifter").withChance(0.4)
      level.runCommandSilent(`execute in ${level.dimension.toString()} run playsound minecraft:block.gravel.break player @a ${entity.x} ${entity.y} ${entity.z}`)
      itemstack.setDamageValue(itemstack.getDamageValue() +1)
      return itemstack
    }

    )})

grand fern Mar 8, 2026, 7:43 PM

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Bump

sand junco Mar 8, 2026, 10:16 PM

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.withchance() only works with recipe outputs. This is not a recipe, it's a function of using it.

And you need to return the itemstack on failure.

So,

StartupEvents.registry('item', event => {
  var sifting_recipe = 28

    event.create("kubejs:manual_dirt_sifting")
    .unstackable()
    .maxDamage(sifting_recipe)
    .use((itemstack,level,entity) => true)
    .useAnimation("brush")
    .useDuration((itemstack) => 30)
    .finishUsing((itemstack,level,entity) => {
      let rng = level.getRandom()    // This is referencing Minecraft's seeded RNG, better to use than Math.random()
      if (itemstack.getDamageValue() == sifting_recipe) {
        if (rng.nextFloat() > 0.4) return itemstack //nextFloat() gets a number from 0-1, so here if a value is greater than the chance to finish, we return the original item.
            // Alternatively, you could have it do 
            /* 
            {
                level.runCommandSilent(`execute in ${level.dimension.toString()} run playsound minecraft:item.shield.break player @a ${entity.x} ${entity.y} ${entity.z}`)
                return Item.of("minecraft:air"); 
            }
            */
            // after the `if (rng.nextFloat() > 0.4)` if you *want* it to break/fail. 
        return Item.of("kubejs:manual_sifter") 
      }
      level.runCommandSilent(`execute in ${level.dimension.toString()} run playsound minecraft:block.gravel.break player @a ${entity.x} ${entity.y} ${entity.z}`)
      itemstack.setDamageValue(itemstack.getDamageValue() +1)
      return itemstack
    }

    )})```

grand fern Mar 9, 2026, 10:29 AM

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I get an error

sand junco Mar 9, 2026, 5:54 PM

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Sorry, I forgot a bracket or two, hence the latter half of the function being dimmed out. The error is probably letting you know that the 'conditional let' is out of scope, so I've edited my comment to fix that issue.

mystic hare Mar 10, 2026, 9:59 AM

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grand fern I get an error

You tried to put a statement inside of a context that expected an expression.

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Variable declarations, like:

let x = 5

are statements

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if without braces:

if (condition) expression

accepts only expressions.
To fix, add braces:

if (condition) {
  let x = 5;
}

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Also important: let, const, and specifically in KJS' Rhino var, are block scoped. That means that these are only accessible within their block

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Also, do you see the washed out colors at the bottom?
That means that VS Code (actually TypeScript) detected that the code below one of your return is unreachable

grand fern Mar 10, 2026, 10:37 AM

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Ok lowkey this is still a 100% chance 😭

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StartupEvents.registry('item', event => {
  var sifting_recipe = 2 //28

    event.create("kubejs:manual_dirt_sifting")
    .unstackable()
    .maxDamage(sifting_recipe)
    .use((itemstack,level,entity) => true)
    .useAnimation("brush")
    .useDuration((itemstack) => 30)
    .finishUsing((itemstack,level,entity) => {
      let rng = level.getRandom()
      if (itemstack.getDamageValue() == sifting_recipe) {
        if (rng.nextFloat() > 0.4) return itemstack
        return Item.of("kubejs:worm") 
      }
      level.runCommandSilent(`execute in ${level.dimension.toString()} run playsound minecraft:block.gravel.break player @a ${entity.x} ${entity.y} ${entity.z}`)
      itemstack.setDamageValue(itemstack.getDamageValue() +1)
      return itemstack
    }

    )})

mystic hare Mar 10, 2026, 10:39 AM

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100% chance for what?

grand fern Mar 10, 2026, 11:59 AM

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the worms come in at a 100% instead of 40%

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"kubejs:worm"

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to be specific

mystic hare Mar 10, 2026, 12:08 PM

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I wonder whether the return value of finishUsing is memoized.

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It doesn't seem to be

mystic hare Mar 10, 2026, 1:47 PM

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You could also debug the value of rng

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Like, do level.server.tell(rng)

grand fern Mar 11, 2026, 1:26 PM

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mystic hare Like, do `level.server.tell(rng)`

where do you recommend to put this?

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below var sifting_recipe = 2 //28?

mystic hare Mar 11, 2026, 6:52 PM

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grand fern below ```var sifting_recipe = 2 //28```?

Wherever you have defined rng. In your proposed position, rng does not exist yet

#OpenJDK something something