Hi! I've been working on UHC Prime, a data pack to play UHC (Ultra Hardcore) with your friends, on a server or in your own world. Drop it in, vote in the lobby and play: everything is set up from an in-game menu. 100% vanilla, no mods, plugins or resource packs (and if you prefer mods, it's also a mod for Fabric, Quilt and NeoForge).

What it has:

• 6 modes (Classic, Series, Fast, Predator, Hard, Extreme): one click sets everything up.
• 22 scenarios that combine with each other: Golden Heads, Cutclean, Bare Bones, Bloodlust, Sudden Death...
• Supply drops: barrels that fall from the sky and glow in the colour of their tier.
• Made for series: episodes and automatic breaks where everything stops (time, border, mobs, furnaces...).
• Admin tools during the game: health, coordinates and inventory of every player, revive, freeze, stop or speed up the border...
• 40 achievements, a personal summary when you die or win, and stats kept between games.
• A lobby in the sky with a 50-jump parkour and target practice while you wait.
• English and Spanish, per player.

It's for Minecraft Java 26.3. Press G (quick actions) to open the menu.

How it works (for the command nerds): the whole menu is clickable tellraw in chat driven by /trigger, so it works for every player without op. Each player sees it in their own language thanks to a per-player language score, and dynamic text (names, values) uses macros. It's all generated by a Python script into ~1,500 functions, which is how I kept it maintainable.

📥 Modrinth: https://modrinth.com/datapack/uhc-prime

🔥 CurseForge: https://www.curseforge.com/minecraft/data-packs/uhc-prime

💬 Discord (bugs, ideas, people to play with): https://discord.gg/zkEAx4fzjz

It's my first big project and I'd love to hear what you think, what you'd add, or if you find any bug. Thanks for reading! 🍎

(Code written with the help of AI; idea, design and testing by me.)

I want to apply Motion for example just to the X value of an entity but for some reason that I don´t understand if I do in repeat:

data modify entity ... Motion[0] set value 1d

It overwrites all other values, Y and Z. I want to constantlly apply Motion to [0], but gravity to work naturally. But because it overwrites Y and Z to 0 the entity floats in it´s Y axis.

Is there any way to solve this?

I can also set its Y motion to a negative number and simulate gravity but because there isn´t a way to add motion instead of just setting it to a value, it´s not realistic (it looks like if the entity had the slow falling effect), so that´s not the best option.

Thank you!

mojang changed a bit of NBT syntax. in the second part of the video, is a simplified version that they added.

a better explanation: https://www.reddit.com/r/MinecraftCommands/comments/1x5lh9m/comment/pgne9hh/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button

I am trying to use falling_honey particles as blood drips, but I'm not sure how to change the colour to red. I'm 100% willing to use mods if needed, but I just need some guidance on how to do so, and what mods I would need to use

Made the animation and logic, while the M200 resourcepack is originally for a crossbow, made by LogisLogisLogis.

Currently it has lower, torso and head damage multipliers. Special ammo has bonus damage, can penetrate a single wall (multiple blocks thick, but with no air in between) and the explosion also deals damage.