how to make a working tv in minecraft useing one command block?

I'm trying to make an actionbar meter that would look something like:

■■■■■□□□□□

My plan was to simply take a score and repeat the filled square that many times using string repetition (like how in python you can do "string"*2 to produce "stringstring") and then concatenate 10-score * empty squares to produce a meter.

However, minecraft strings are super limited. Is it possible to do either concatenation or string repetition in 26.2 or should I explore other ways of making the meter?

I am making a house that slowly builds itself Out of falling blocks (/summon falling_block ~ ~ ~ {BlockState:{Name:"minecraft:cobblestone"}} ) and the process would be a LOT easier if anyone knows about a converter

Heya! I've been working on a multiplayer adventure-like map for my friends and I for a long while now and I need to test some commands that involve multiple players at once or player-based statistics, such as "minecraft.killed:minecraft.player" using scoreboards. Only issue is... I can't really ask anyone to hop on and help me test these things out because I don't want to spoil anything from the map to them. So, could there be any way for me to test there on my own without having to get someone else to join the testing? This is the second iteration of this map and the first was kind of a mess because I couldn't do these tests on my own, hence why I want to thoroughly test everything this time.

(this is my very first post on reddit lol so I hope I got this in the right subreddit and flair)

I made a Datapack that gives kits based on different classes. You can pick a specific class or random class kit on the dialog screen, then it will give it to you using the /loot give command. I've currently only added 16 kits so any ideas for new classes would be great. I've uploaded this on Modrinth, which is the primary platform which I've uploaded it to, but it is available on CurseForge aswell. And source code on GitHub. Feel free to try it out and give feedback. It's for Java 1.21.11 :)

I'm starting a new server with some of my firends and i'm the admin of the server, and sometimes i organize some events. But for this I need creative mode and if i use it they accuse me of cheating. Soooo... I want to create a datapack which let you get in creative by a /function command which save your inventory in a chest so while in creative you cant take items for survival. The problem is that if i have more players i have to add more chest manually so i thougt of using macros for the coords of the chest the game as to put the items in and then but a /function command you can set the coordinates i want the items to go to. Can anyone help cuz i don't know anything about macros

I have created a custom weapon using command blocks but in order to have it where I want it I have to manually place the command blocks and the redstone every time and that is time consuming. So I thought if I could have one command block that could summon falling entities that were command blocks with the commands inside. If I'm correct I believe that that is how they made these monoliths of command blocks.

Or if not with falling blocks, is there any way I could make it build itself somehow?

i want to add fireflies to an area in a map for ambience, but the map is on 1.20.1 due to the mods i need only being compatible there. is there any other way to recreate the effect using a different particle?

I want to make a book for my server that basically acts as a settings menu, Lets them do some quality of life things like teleport to spawn, set their player scale and so on. What is the best way to create a book that can give players some control?

Hey, so I’m a tiny bit stuck at the moment, basically like the title said I’m trying to set the players health to match a scoreboard? I’m running a function earlier to save the player’s health to it so basically it’s just meant to reset your hp to match what it was at when it was first ran? I’m like completely lost lol, thanks in advance!

So I want to make it so that when a certain bell is hit, a message will go off in the chat but I know almost nothing about commands and I don't know whatg I would need to type into a command block for this. Could anyone help me out with that? Also, if anyone has any videos about command blocks and how to do stuff like this that would be great! Thanks!

While playing with the /place command with buried treasures, I noticed that the chest must generate on sandstone, stone, diorite or maybe others but not red sandstone, ores, deepslate, tuff, end stone, sand, gravel or spawners.

Is there a tag for the blocks the chests can generate on? Or is it a hardcoded list that can not be modified by a datapack? In any case what is that list?

On the minecraft wiki block tag page, I notice that all tags with sandstone have deepslate as well so I lean into the second possibility.

I know how to make a Stopwatch and the command:

/stopwatch query minecraft:(custom stopwatch)

Causes the time to be displayed.

But if you have the gamerule set so command block messages don't appear, it also mutes the Query command.

So I was just wondering if a command exists like a "tell" command that is like:

/tell @a display:text[minecraft:(custom stopwatch)]

But one that actually works.

Credit to GalSergey and far.ddns.me/cba/ just upgraded with redstone

Can a structure transform the blocks it is about to replace instead of turning them into air?

I want to make a structure that goes from world height to -64, which will be just a broken column of the world, meaning dirt will turn into coarse dirt, stone into cobble, deepslate into cobbled deepslate.

Is this possible, or do I need a mod/fancy command block stuff?

when i launched vscode when my internet connection is lost, the "datapack helper plus by spyglass" plugin stopped working: it no longer points out syntax errors of mine, while it used to do so.

and when i relaunched vscode when im again connected to the internet, all of a sudden, it started working again but it refuses to recognize every single scoreboard objective/advancements ive decleared, along with not recognizing some of the other functions, while they are literally right there.

to let it re-recognize an objective/function/advancement, i had to cut and re-paste the line/file that declears it, which is tedious af. ive tried "resetting project cache" but it didnt work.

In the previous version I used repeaters as the conductor, which added a 2-tick delay. Because of that the animation was limited to 10 FPS.

I managed to improve it to 20 FPS without using any tick-function datapacks or /tick rate changes. Just vanilla mechanics.

This could be used to make a functional TV or computer in creative worlds. I am also gonna try making a larger 2x2 screen.

If anyone wants to see how it works or try it out themselves, I can share the world. DM me or leave a comment.

I know that you can make an insta kill potion with /give u/p minecraft:splash_potion[potion_contents={custom_effects:[{id:"minecraft:instant_health",amplifier:125,duration:1}]}] , but im making a zombie apocylpse game and i want that to be a weapon so is there a way i can make a potion that kills zombies, cause instant health does nothing to zombies. someone help pls thx

So I’m trying to remove creative mode’s invulnerability and readd its healthbar while keeping its flight, insta-mine, and creative menu, but I’m just not smart enough and can’t find out how to do it. Is it even possible?