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Duplication with Stars

Duplication with Stars

by Sul4ur • Downloads: 0 • Followers: 0
Description
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Changelog
Versions

This data pack is now discontinued.
This means that it will no longer receive any more updates.

This data pack allows duplication by using a new item called duplication stars, which can be made out of amethysts and nether stars.

How to duplicate

v1.0 to v1.1.1

All you need to do is just to throw the item you want to duplicate and the nether star on top of obsidian and let magic do the rest...

Dupe1.0.1 Dupe1.0.2

v2.0 to v2.1.1

Information is available on the wiki.

v2.2+

If you want to duplicate, you will have to make a duplication star.
There are 3 (setup) difficulties: Very Easy, Easy (default) and Normal

Very Easy

In this difficulty, unlike others, you won't need lightning. All you have to do is to place down a hopper and disable the hopper with redstone. You can do this by placing a lever next to the hopper and turning the lever on.

In the hopper, put some nether stars in the third slot, and in the second slot, put some amethyst shards. The amount of amethyst shards must be equal or higher than four times the number of nether stars. In other words, you will need (4 * the number of nether stars) amethysts. You can change the amount of amethysts required for each nether stars in the configurations.

2024-01-14_17 42 54

Now, throw a single copper block on top of the hopper. If you do this, the copper block will disappear, but you will end up with a duplication star: (Ignore the "Hold Ctrl to show more NBT", and the redstone lamp is optional)

Very Easy

2024-01-21_19 22 37

So with this information, You will now need to obtain 2 duplication stars (The amount can be changed in the config). After that, put those duplication stars in the third slot of the hopper you used earlier to make duplication stars. Now, put the items you want to duplicate in the first and the second slot of the hopper.

Screenshot_2024_01_21-1

Now, make a lightning strike happen near the hopper again. (Just like the last time) And the items will duplicate!

Screenshot_2024_01_21-3

Easy

All you need to do is to place down a hopper. Optionally, and recommendably, place down a lightning rod next to it.

Easy

And in that hopper, put some nether stars in the third slot, and in the second slot, put some amethyst shards. The amount of amethyst shards must be equal or higher than four times the number of nether stars. In other words, you will need (4 * the number of nether stars) amethysts. You can change the amount of amethysts required for each nether stars in the configurations.

2024-01-14_17 42 54

Now, make a lightning strike happen near the hopper. You can do this by placing down a lightning rod next to the hopper and throwing a channeling trident on the rod. If you do this, you will end up with a duplication star: (Ignore the "Hold Ctrl to show more NBT")

2024-01-21_19 22 37

So with this information, You will now need to obtain 2 duplication stars (The amount can be changed in the config). After that, put those duplication stars in the third slot of the hopper you used earlier to make duplication stars. Now, put the items you want to duplicate in the first and the second slot of the hopper.

Screenshot_2024_01_21-1

Now, make a lightning strike happen near the hopper again (Just like the last time), and the items will duplicate!

Screenshot_2024_01_21-3

Normal

You will need to place down a hopper, followed by 4 lightning rods next to it and 9 copper blocks below. It should look something like this:

Normal

and in the hopper, put some nether stars in the third slot, and in the second slot, put some amethyst shards. The amount of amethyst shards must be equal or higher than four times the number of nether stars. In other words, you will need (4 * the number of nether stars) amethysts. You can change the amount of amethysts required for each nether stars in the configurations.

2024-01-14_17 42 54

Now, make a lightning strike happen on one of the lightning rods. You can do this by throwing a channeling trident on the rod. If you do this, you will end up with a duplication star: (Ignore the "Hold Ctrl to show more NBT")

2024-01-21_19 22 37

So with this information, You will now need to obtain 2 duplication stars (The amount can be changed in the config). After that, put those duplication stars in the third slot of the hopper in the setup you used earlier to make duplication stars. Now, put the items you want to duplicate in the first and the second slot of the hopper.

Screenshot_2024_01_21-1

Now, make a lightning strike happen near the hopper again (Just like the last time), and the items will duplicate!

Screenshot_2024_01_21-3

Commands

/function sul4ur:star_dupe2/config: Opens the configurations menu. They can look different in each version.

Screenshot_2024_01_22-1

Uninstallation

Just use /function star_dupe2:scores/remove, then you can delete the data pack from your world folder or by using /datapack disable.

All Versions

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[2.2+mod] 2.2 MOD by Sul4ur on Oct 16, 2026
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A Huge update!
  • Added **duplication stars**.
  • In the previous versions, you used to duplicate items with a regular nether star. But now you will need to use a **duplication star** instead.
  • You can make a duplication star by putting amethysts in the second slot and some regular nether stars in the middle slot.
  • By default, you will need 4 amethysts to turn each nether star to a duplication star. So for example if you want to turn 11 nether stars into a duplication star, you will need 44 amethysts to do that. (The amount of amethysts required for that work can be changed via config).
  • I will improve this later, because you can only put the amethyst into the second slot, and the first, fourth and fifth slot must be empty.

![2024-01-14_17 42 54](https://github.com/Sul4urx/nether-star-duplication/assets/143956823/3ef420b5-02d4-4b9f-85c7-366599ae76fd) ![2024-01-21_19 22 37](https://github.com/Sul4urx/nether-star-duplication/assets/143956823/768ae8a4-4b02-42f3-8b79-28134f0a7796)

  • Added a new difficulty: **Very Easy**
  • In this difficulty, you won't need lightning. Instead, you just disable a hopper (by putting a lever next to the hopper and flicking the lever) and then you throw a **single** copper block.

![2024-01-14_17 35 46](https://github.com/Sul4urx/nether-star-duplication/assets/143956823/2ce7c909-e9e4-4564-b788-ffdae08ce977)
  • Changed the Normal difficulty.
  • You will now need to place 9 copper blocks below the setup. Note that the copper blocks can't be oxidized nor waxed.

![2024-01-14_17 35 28](https://github.com/Sul4urx/nether-star-duplication/assets/143956823/f7fa815b-7bc9-4096-b370-ace2ed0d9d48)

  • New optional resource pack, which changes the look of a duplication star!
  • It's the first resource pack I've ever made lol.
  • Reverted these changes:

> 2.1
Instead of just using scores, it will now use function macros, which works a lot better. This allows that every time you try to change a config, you will recieve a message telling what changed.
  • This means that this data pack is once again compatible with 1.18-1.20.1.
  • Downgraded the uninstallation system.
  • In the previous versions, when you "uninstalled" this data pack, the data pack would change to ***disabled mode***, which means that all features of the data pack would be disabled.
  • This is no longer the case anymore. you will now use /function star_dupe2:scores/remove, which will only remove the scores used for the data pack function, and no longer ***disable*** the data pack.
  • The reason I did this is because ***disabling*** the data pack would introduce multiple bugs.
  • Redesigned configs.
  • Added description for lines of code.

[2.2] 2.2 DP by Sul4ur on Oct 16, 2026
Download
A Huge update!
  • Added **duplication stars**.
  • In the previous versions, you used to duplicate items with a regular nether star. But now you will need to use a **duplication star** instead.
  • You can make a duplication star by putting amethysts in the second slot and some regular nether stars in the middle slot.
  • By default, you will need 4 amethysts to turn each nether star to a duplication star. So for example if you want to turn 11 nether stars into a duplication star, you will need 44 amethysts to do that. (The amount of amethysts required for that work can be changed via config).
  • I will improve this later, because you can only put the amethyst into the second slot, and the first, fourth and fifth slot must be empty.

![2024-01-14_17 42 54](https://github.com/Sul4urx/nether-star-duplication/assets/143956823/3ef420b5-02d4-4b9f-85c7-366599ae76fd) ![2024-01-21_19 22 37](https://github.com/Sul4urx/nether-star-duplication/assets/143956823/768ae8a4-4b02-42f3-8b79-28134f0a7796)

  • Added a new difficulty: **Very Easy**
  • In this difficulty, you won't need lightning. Instead, you just disable a hopper (by putting a lever next to the hopper and flicking the lever) and then you throw a **single** copper block.

![2024-01-14_17 35 46](https://github.com/Sul4urx/nether-star-duplication/assets/143956823/2ce7c909-e9e4-4564-b788-ffdae08ce977)
  • Changed the Normal difficulty.
  • You will now need to place 9 copper blocks below the setup. Note that the copper blocks can't be oxidized nor waxed.

![2024-01-14_17 35 28](https://github.com/Sul4urx/nether-star-duplication/assets/143956823/f7fa815b-7bc9-4096-b370-ace2ed0d9d48)

  • New optional resource pack, which changes the look of a duplication star!
  • It's the first resource pack I've ever made lol.
  • Reverted these changes:

> 2.1
Instead of just using scores, it will now use function macros, which works a lot better. This allows that every time you try to change a config, you will recieve a message telling what changed.
  • This means that this data pack is once again compatible with 1.18-1.20.1.
  • Downgraded the uninstallation system.
  • In the previous versions, when you "uninstalled" this data pack, the data pack would change to ***disabled mode***, which means that all features of the data pack would be disabled.
  • This is no longer the case anymore. you will now use /function star_dupe2:scores/remove, which will only remove the scores used for the data pack function, and no longer ***disable*** the data pack.
  • The reason I did this is because ***disabling*** the data pack would introduce multiple bugs.
  • Redesigned configs.
  • Added description for lines of code.

[2.1.1+mod] 2.1.1 MOD by Sul4ur on Oct 16, 2026
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### Fixed a very important bug alongside with another bug!

[2.1.1] 2.1.1 DP by Sul4ur on Oct 16, 2026
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### Fixed a very important bug alongside with another bug!

[2.1+mod] 2.1 MOD by Sul4ur on Oct 16, 2026
Download
Redesigned configurations
  • Configs now work differently.
  • Instead of just using scores, it will now use function macros, which works a lot better. This allows that every time you try to change a config, you will recieve a message telling what changed.
  • This means that this data pack will **no longer be compatible with versions below 1.20.2.**
  • Fixed a typo in uninstall.mcfunction which made uninstalling this data pack not possible. *(well maybe?)*
[2.1] 2.1 DP by Sul4ur on Oct 16, 2026
Download
Redesigned configurations
  • Configs now work differently.
  • Instead of just using scores, it will now use function macros, which works a lot better. This allows that every time you try to change a config, you will recieve a message telling what changed.
  • This means that this data pack will **no longer be compatible with versions below 1.20.2.**
  • Fixed a typo in uninstall.mcfunction which made uninstalling this data pack not possible. *(well maybe?)*
[2.0.2+mod] 2.0.2 MOD by Sul4ur on Oct 16, 2026
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  • This data pack will now inform you information about this data pack everytime you (re)load the datapack.
  • You can disable this feature though, with the new config .inform_player_on_load.
  • (Re)loading this data pack will now reinstall the data pack, as long as this data pack is enabled.
  • Fixed a typo in the functions file, which caused a specific order of hoppers and lightning rods not work when you striked them with lightning.
  • You can no longer uninstall or reinstall this data pack more than twice in a row.
  • Redesigned the configurations menu.
[2.0.2] 2.0.2 DP by Sul4ur on Oct 16, 2026
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  • This data pack will now inform you information about this data pack everytime you (re)load the datapack.
  • You can disable this feature though, with the new config .inform_player_on_load.
  • (Re)loading this data pack will now reinstall the data pack, as long as this data pack is enabled.
  • Fixed a typo in the functions file, which caused a specific order of hoppers and lightning rods not work when you striked them with lightning.
  • You can no longer uninstall or reinstall this data pack more than twice in a row.
  • Redesigned the configurations menu.
[2.0.1] 2.0.1 DP by Sul4ur on Oct 16, 2026
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<p><h3>Just a quick small update!</h3>
<ul>
<li>You can now uninstall this data pack. All you have to do is use /function sul4ur:star_dupe2/uninstall to disable this data pack and remove unnecessary scoreboards.</li>

<li>Redesigned the Config and the Info menu.</li>

<li>Added a lil' Easter egg!</li></ul></p>
[2.0] 2.0 DP by Sul4ur on Oct 16, 2026
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<h2>Nether Star Duplication 2.0 has now finally been released.</h2><ul><li>Now instead of duplication by throwing them on top of obsidians, you now use lightning instead.</li><li>The config menu has been updated.</li><li>A new gamerule .max_count_for_dupe, which allows you to modify how many items you can duplicate at once.</li><li>Another gamerule .stars_to_consume has been added.</li><li>The pack icon has been updated.</li><li>This data pack is now finally able to detect multiple nether stars, so you no longer need to only throw a single nether star, you can throw however many nether stars you want and the data pack will reduce from it.</li><li>Oh yeah, gamerules are now called configs</li><li>If you already installed the 1.0 version and want to upgrade to the 2.0 version, you will have to fully uninstall the 1.0 version first and then install the 2.0 versions.</li></ul>
</div>
[1.1.1] 1.1.1 DP by Sul4ur on Oct 16, 2026
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<h3>An update to fix a huge incompatibility problem and other things!</h3>
<ul>
<li> Removed the game rule(s) .can_dupe_in_<dimension>
<ul><li> The functionality of this game rule caused this data pack to break and be incompatible with most things.</li></ul></li>

<li> Removed the game rule .viewable_gamerules</li>

<li> Game rule .pick_up_after_delay now supports value -1.
<ul><li> Applying -1 to the value means the pick up delay of the items won't get affected.</li></ul></li>
</ul>
<h3>This data pack is now in pre release!</h3>
<p><ul>
<li>This data pack now has duplication setup difficulties.
<ul>
<li><b>Easy:</b> In this difficulty, you only need to summon a lightning next to the hopper, in order for the duplication to happen.</li>
<li><b>Normal:</b> In this difficulty, you will need to place 4 lightning rods next to the hopper, then strike one of these rods with lightning.</li>
</ul>
<li><a href="https://github.com/Sul4urx/Datapack-issues-Sul4ur/issues/3" target="_blank">Fixed a bug</a> where you couldn't duplicate an item when it was in the first slot and there were no items on the second slot.</li>
<li>Redesigned the config menu and made <code>/trigger star_dupe2.trigger.info</code> functional.</li>
</li>
<li>Added pack icon.</li>
</ul></p>
[b2.2] Beta 2.2 by Sul4ur on Oct 16, 2026
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<h3>Woah! So quick! There are changes!</h3>
<ul>
<li>Updated configs... a lot.
This update adds 2 new configurations:
<ul><br><li>

<code>can_dupe.<item></code> This gamerule was already added, but now they are functional. You can use this to whitelist or blacklist an item from being duplicated. This only supports 4 items for now, which are shulker boxes, wither skulls, dragon eggs and bundles.
</li><li><code>max_count_to_dupe</code> Can be any number(even negative values!). Determines how many total items can be duplicated at once. This isn't functional for now though.</li></ul><br>
And changed one config: <ul><br><li><code>stars_to_consume</code> now can be negative values as well.</li></ul><br>
</li>
<li>You can now easily modify these changes through <code>/function star_dupe2:run/config</code>.</li>
<br>
<li><s>Fixed a bug where you couldn't duplicate an item if it was in the first slot and there were no items on the second slot.</s> Oops! that was never fixed before, my bad.</li><br>
<li>Fixed another bug where you could duplicate more than once with just one lightning bolt. It still costed more nether stars anyways...</li>
</ul>
[b2.1] Beta 2.1 by Sul4ur on Oct 16, 2026
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<ul><li>They way you duplicate has now changed. You now have to place a hopper, and then place 4 lightning rods each next to the hopper. Then, place the nether star<strong>s</strong> in the middle slot of the hopper, and <b>two</b> different types of items each is the first and the second slot.

<ul><br><li>Yes, that means now you can finalllly put however many nether stars you need, instead of just a single.</li>
<br>
<li>And yes, that also means you can duplicate two different types of items, but not at a cost of 1 nether star...</li></ul>
</li><br>

<li>And now you will need 2 nether stars to duplicate, but hey, you can now duplicate 2 different types of items now. (and oh yeah, the value can be changed.)</li><br>

<li>Added the first gamerule (now it's called config): <code>star_dupe2.config.stars_to_consume</code> (you can change the value by using <code>/scoreboard players set #config ...</code>. By default, the value is 2.)
<ul><br><li>Determines how many nether stars you need for duplication.</li><br>

<li>There are other gamerules which are added, but not functional for now.</li><br>
</ul>

</li><li>This work is now licensed under <a href="https://creativecommons.org/licenses/by-sa/4.0/">CC BY-SA 4.0.</a></li>
</ul>
[b2.0] Beta 2.0 by Sul4ur on Oct 16, 2026
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<h4>This data pack is now reworked from scratch.</h4>
<ul>
<li>You no longer throw the nether star on top of an obsidian. That sounds too boring. Instead, you will have to put them in a hopper and strike the hopper with lightning. Full explanation is in the description.</li>
<p></p>
<li>It still misses many features that are in Nether star duping 1.0 (e.g. Configurations and uninstallation), so that is why it is in beta. As soon as they are added and I fixed enough bugs, It will be fully released.</li>
<p></p>
<li>If you already installed the 1.0 version and want to upgrade to the 2.0 version, you will have to fully uninstall the 1.0 version first and then install the 2.0 versions.</li>
<p></p>
<li>Thanks to <a href="https://www.planetminecraft.com/member/crowndeluxe/" target="_blank">@CrownDeluxe(temi)</a> for the new project idea!</li>
</ul>
[1.1] 1.1 by Sul4ur on Oct 16, 2026
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<ul>
<li>Re-added game rule <code>pick_delay_after_dupe</code>
<ul>
<li>This time with actual functionality. Determines how long it takes to pick up the item after being duped. Default is 1.5 seconds</li>
</ul>
</li>
<li>Added game rules <code>can_dupe_in_<dimension></code>
<ul><li>Determines whether or not can you duplicate items in the selected dimension.</li>
<li>If all of them is set to true(which is default), It will accept any dimension (including custom ones).</li>
</ul>
</li>
<li>Added <code>/function star_dupe:config</code>
<ul><li>Allows you to easily edit game rules of this data pack.</li>
</ul></li>
<li>Duplicating an item now has a visual effect of explosion instead of enchantment effect.</li>
</ul>
[1.0.2] 1.0.2 by Sul4ur on Oct 16, 2026
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<ul>
<li>Shulker boxes and bundles can no longer be duplicated (Although empty shulker boxes can.)</li>
<li>You can no longer duplicate an item if there is a nether star within 3 blocks.</li>
<li>Removed an unnecessary gamerule: <code>pick_delay_after_dupe</code>.</li>
<li>Fixed a typo which left the gamerule <code>drag_egg_can_dupe</code> with no default value.</li>
<li>This pack is now confirmed to work in 1.18-1.19.4 versions.
</ul>
[1.0.1] 1.0.1 by Sul4ur on Oct 16, 2026
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<h3>Added:</h3>
<ul>
<li> <code>viewable_gamerules</code> gamerule.</li>
<li> Icon for the data pack <code>(pack.png)</code></li>
<li> More description for the codes</li>
</ul>
<h3>Changed:</h3>
<ul><li> Renamed <i>settings</i> to <i>gamerules</i></li></ul>
<h3>Fixed:</h3>
<ul><li> A typo which messed up the uninstallation</li></ul>
[1.0.0] 1.0 by Sul4ur on Oct 16, 2026
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Initial release for the data pack
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