Unlabelled Minecraft - 1.13 Is Now The Ocean Aquatic Update

1/25/2018 11:28:00 am
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Minecraft - 1.13 Is Now The Ocean Aquatic Update

1.13 Is Now The Ocean Aquatic Update

Posted: 24 Jan 2018 05:02 AM PST

I built a demon in Minecraft, my first voxelart sculpture, hope you'll like it!"

Posted: 24 Jan 2018 10:31 AM PST

The end of a dungeon I made a few years ago.

Posted: 24 Jan 2018 09:24 AM PST

The Wizard's Tower on my survival rp map.

Posted: 24 Jan 2018 03:21 PM PST

So lightning hit my pig pen...

Posted: 24 Jan 2018 12:39 PM PST

My son's pinewood derby car.

Posted: 24 Jan 2018 03:42 AM PST

Entrance of a cave system

Posted: 24 Jan 2018 10:06 AM PST

My 13 year old daughter built this Star Wars ATAT and it’s epic!

Posted: 24 Jan 2018 06:47 AM PST

Drop shaft in my SSP world.

Posted: 24 Jan 2018 12:28 PM PST

When u finally see your Home after a long day of travel

Posted: 24 Jan 2018 10:28 AM PST

Courtyard of a roman castle me and sister are working on. Thoughts? Feedback?

Posted: 24 Jan 2018 05:12 PM PST

Lilypad with Lily (vanilla)

Posted: 24 Jan 2018 08:26 AM PST

(Scaled down) stereographic render of my SSP world spawn.

Posted: 24 Jan 2018 08:03 AM PST

Just a little solo survival base I have been working on.

Posted: 24 Jan 2018 10:19 AM PST

One of the best features in Minecraft Bedrock Edition. (In my opinion.)

Posted: 24 Jan 2018 09:29 AM PST

Minecraft seed with Mushroom Island just west of starting point and a bunch of ocean monuments surrounding it. Seed -1016345709544690728

Posted: 24 Jan 2018 10:15 AM PST

My SkyBlock survival island

Posted: 24 Jan 2018 10:49 AM PST

Zoomed maps can fill out differently depending on how you hold them. (Vanilla 1.12.2)

Posted: 24 Jan 2018 05:16 PM PST

tl;dr: (Putting this first since this post turned out pretty long.) Your zoomed map will probably look different depending on whether you hold it in one hand or with both hands.

Background: Over several months I fully mapped a circular region of my survival world, 497 maps at level 1 (1:2) zoom, for an area of roughly 32.5km2. During the process, I'd noticed some inconsistencies when I hung them up on the wall. Most obvious were that the same bridge that is the same all the way across would look different on one map section compared to another, and consistently sized paths would look thick in some areas but spotty in others.

While fixing up a village recently, I checked the map and noticed that the fence I was starting to place around the outside looked good. I put the map away, finished the fence, and made a few more updates to the overall appearance of the town. Eventually it was time to update the map and when I did I just about hit the roof. The entire fence, including the test section that initially looked good on the map, was a broken mostly missing train wreck and I had no idea how or why. All that work and my map was a mess. Fast forward a few days when I came back to look at the map again and when I picked it up, it updated and the entire fence filled in even though I didn't change anything in the interim.

After a bit of trial and error (accompanied by a bit of cussing and grumbling), I figured out what the difference is. There are two possible ways to hold a map. The traditional way is to have the map in the hotbar and then select it. By default you'll hold the map with both hands and you'll have a nice large view of it. With the addition of the functional second hand, there's now a one-handed way of holding a map as well; if the map is in the off hand or if another item occupies the off hand then you hold the map in one hand and have a smaller view. The major difference seems to be that the two-handed position seems to give more deference to narrow structures like fences, paths, rail structures, etc. when resolving the pixel that should be plotted, potentially giving more detail even on a zoomed out map. The trade off is that the one-handed view gives less detail but adds convenience since you're able to see where you're walking. And of course I mostly had my working maps in my off hand for the convenience of it. There are definite general terrain differences between the two views and one result may be more favorable than the other (more on that below).

There's one additional catch I've found that I still haven't figured out so I'm sort of spitballing here. One reason it took me a bit of time to narrow down what was going on is because it seems that some condition seems to make it possible to get "locked in" to one view or the other. The only reliable work-around I've found to that so far is exiting and starting a new session and viewing a map with the method I want it to render.

Now for the visual part showing the differences between map generation. I have a few tools at my disposal I put together outside the game. The first is a script that converts a single map_###.dat NBT file to a 128x128 PNG image. The second tiles all the maps and renders a giant PNG poster image the way they look on my map wall; it's not that applicable here since it's a convenience thing, but I can show off the result if anyone wants to see it. The third takes two similar images and shows the differences between them.

https://imgur.com/a/FuYbJ

And just to touch on some potential questions:

  • Bug? Probably not. It could be a feature or just a quirk. I've checked bugs.mojang.com for submissions that look related but found nothing. And because I don't think it's a bug at this point, posting it there is just noise.
  • Zoom? I'm pretty sure this isn't applicable to default maps since they're 1:1. I've observed this so far only with level 1 maps. It's possible there might be subtle differences with level 2-4 maps, though more pixels being resolved to a single color may suppress most differences.
  • Platform? I've been examining this on the latest Java Edition, though I think I was still on 1.11.x when I noticed the behavior. I haven't tried snapshots yet but I expect similar results. I have no idea if this is a thing on Bedrock. Any volunteers?
  • Multiplayer? Maybe. I only play single player so I have no idea what happens. I also have no way of knowing what happens when two players try to update the same map with differing holding methods. Volunteers?
  • Reproducible? Now that I know why I see differences and can control it, it appears to be.
  • End? I haven't checked since I haven't made any maps there, but I wouldn't be surprised if it happens there too.
  • Wiki? Forums? Reddit? I spent some time looking for information on this behavior and haven't found any. It's possible this is already known and I've missed it. But it's also possible this is new information. I discovered this independent of any other information.

Think this is interesting? Useful? Find any practical applications for this I haven't thought of? (I've already just thought of a way this could be used to mess with players in multiplayer with a bit of planning.)

submitted by /u/ExtraStrengthFukitol
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A picturesque shot of our cozy town on our new realm :]

Posted: 24 Jan 2018 04:50 PM PST

Finally finished my server’s nether hub. Complete with statues of the founders and murals of our great battles

Posted: 24 Jan 2018 02:26 AM PST

Help with Chunky!

Posted: 24 Jan 2018 11:00 AM PST

shithole

Posted: 24 Jan 2018 08:48 AM PST

Castle that a friend and I have been working on. Thoughts?

Posted: 23 Jan 2018 10:59 PM PST

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