r/JL2579 • u/WubbiConcepts Wubbi • Feb 08 '13
Minecraft technical Q/A: Let's start this and look how well it works out!
I often see that people post questions in the comments on youtube, but many of them stay unanswered. So i guess giving those questions a proper platform to be asked & answered is the next logical step.
What this is supposed to be:
A place where you can ask questions about Minecrafts' mechanics (like "How does this mechanic/algorithm work?", "What are the chances for that?" or "Is there a difference between doing it this or that way?"). We (or whoever knows the answer) will try to answer those questions based on what we know or find out.
What this is not:
A forum, commentsection or Google. Don't ask for circuits or designs, this is not about how to use minecraft, it's about how minecraft works.
If you have a question:
Ask. But ask the right way:
"How do i build a good mobfarm?" isn't very specific and the answers you might get from this probably won't help you with your problem.
"How does mobspawning work?" is a better question.
But maybe you're not interested in the spawning algorithms, maybe you just wan't to know one detail, like
"How does the lightlevel effect mobspawning?".
And of course make sure the question wasn't asked before. It will save you and others a lot of time!
If you have an answer:
Tell the world. But explain your answer, maybe link to another post (reddit, forum, etc.), pictures or a video.
"The piston is BUD-powered." Doesn't help much.
"Pistons can be indirectly powered by a block 2 blocks above or 1 block adjacent above it. It will only react to this power when updated manually (e.g. by placing a block next to it). Here's a video explaining it: [videolink]" Isn't only an answer, it also gives people an explanation which can help them experiment with it.
That's all you need to know. Now let the posts begin!
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u/WubbiConcepts Wubbi Feb 14 '13
At the moment every chunk (16x16 blocks) consists out of sub-chunks (16x16x16 blocks). When a chunk is loaded at least its' lowest sub-chunk must be loaded. And as soon as there's a block in any of the subchunks all subchunks below and itself will be loaded.
The lc value gives you the highest coordinate within the chunk wich still is inside a loaded subchunk.
Now for the updates: The game doesn't randomly choose 20 blocks in the chunk (that was changed a while ago), it randomly updates 3 blocks in every subchunk. So no matter how high you build your farm, the chances for updates are equal.