Minecraft Snapshot 17W49A

This weeks snapshot brings us bug fixes! Lots of bug fixes.

A full changelog can be found on Minecraft.net:

  • Added new data concept: 'tags'
  • Lots of bug fixes!
  • Tab now also cycles the command suggestions again
  • Fixed bug MC-99321 - Hoppers cannot pull items from double chests if second chest is blocked
  • Fixed bug MC-121282 - Server icons erased on loading multiplayer menu
  • Fixed bug MC-121631 - Taking items from the creative inventory search tab no longer resets search text
  • Fixed bug [..................] x30

TAGS

Items & blocks can be "tagged" with an ID, to make testing for things much easier. For example, checking if a block is "wool" with a command needs to actually test for every wool-like block individually. Now you can test if it matches the tag minecraft:wool, instead.

TYPES OF TAGS

Currently there's block tags and item tags. You use block tags when testing for blocks in the world, and item tags for testing for items (even block-items) in inventories. It may seem like we could just stick with item tags, but not every block has an item!

CREATING TAGS

Inside data packs, you can create a file at data/(namespace)/tags/blocks/foo.json to make a block tag called namespace:foo, which contains a list of blocks that should be tagged with namespace:foo.

A WORK IN PROGRESS

There's not many default tags (both item & block have minecraft:planksand minecraft:wool currently, that's it). We're migrating things over to it, still.

RECIPES

Recipes can now refer to a tag instead of an item. This should save a few hundred thousand lines of code, somewhere.

To get snapshots, open your launcher and go to the "launch options" tab. Check the box saying "Enable snapshots" and save. To switch between the snapshot and normal version, you can find a new dropdown menu next to the "Play" button. Back up your world first or run the game on in a different folder (In the "launch options" page).

 

Please report any and all bugs you find in Minecraft to bugs.mojang.com.

 

Snapshots can corrupt your world, please backup and/or run them in a different folder from your main worlds. 1.13 will have a lot of experimental snapshots that may break everything and smell funny. This may be one of those snapshots. This is what happens when Mojang are changing all the things! 

 

Share your thoughts on how 1.13 is shaping up in the comments below!

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