We ran a randomized controlled trial to see how much AI coding tools speed up experienced open-source developers. The results surprised us: Developers thought they were 20% faster with AI tools, but they were actually 19% slower when they had access to AI than when they didn't.

Today is the 5th anniversary of #Minecraft data pack #worldgen! Snapshot 20w28a added the ability to define custom biomes, structures, etc. through data packs. It's hard to overstate the impact this change had on modded worldgen. Very proud of what our community has made with it so far! #mcdev

I've tried to fix that one multiple times over the years. Finally had the right idea of how to do it. It was surprisingly simple.

I almost fell for a scam site today, pretending to be the homepage of an OSS project that I was looking for. It looked convincing until I scrolled to read more text. LLM slop is getting scary good at "looks good at a glance". I don't even know _how_ they managed this. Feeding LLM into LLM somehow?

I'm disgusted by the concept of generative AI tooling for Minecraft mods. This isn't the first one and it sure as hell won't be the last, but it made my blood boil regardless. (1/5) #mcdev #minecraft

The dialog generator now has a visual preview, closely matching vanilla! #mcdev #datapacks misode.github.io/dialog/?vers...

Turns out the firefly particles make very good nether ambient particles too. In the Lavaflow 1.21.5 update, I've added them to the ghost forest. #mcdev #minecraft

Tariffs xkcd.com/3073

Trying to figure out ancient debris distribution in Lavaflow, I wished to have a visual marker for each placement position. So today I've implemented a debug renderer for feature locations into my Worldgen Devtools mod. Just released that in version 1.3.0 for mc 1.21.3 and .4. Open with F3+F #mcdev

Finally published a first Alpha of "Lavaflow", a #Minecraft worldgen #datapack / mod that completely overhauls the Nether. It includes lava rivers on 2 heights with lavafalls between them, proper valleys, oceans and more. Check it out on modrinth: modrinth.com/datapack/lav... #mcdev

A change I would like to highlight from #Minecraft 1.21.4 is a bug-fix: MC-272062 - "Dimension padding doesn't affect the start piece." This fix makes it possible for data packs to add structures to the end without them ending up in in the void at y=0. #mcdev

I'm really glad I'm just developing a website for making zip files for a block game. Takes away a lot of pressure when rolling out major rewrites!

I've just released an update to my #minecraft datapack map: - You can now directly select datapacks from @modrinth.com. - Added URL parameters for the settings and datapacks. For example, you can directly open a Terralith map using: map.jacobsjo.eu?datapacks=mo... #mcdev #DatapackShowcase

Have you ever wanted to see a map of how a specific #minecraft seed generates? But you are playing with datapacks that modify worldgen? I've got an online solution for you: map.jacobsjo.eu (Works with some mods too, but not with all) #mcdev #DatapackShowcase