Datapack Codex

Java Edition 12w18a

Minecraft Wiki article. Categories: Java_Edition_versions, Java_Edition_1.3.1_snapshots, Java_Edition_snapshots_released_in_2012, Java_Edition_snapshots, Java_Edition_1.3.1_development_versions, Versions_using_legacy_download_site, Java_Edition_development_versions_released_in_2012

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This article is reproduced from Java Edition 12w18a on the Minecraft Wiki. Mirrored from revision 3618440. It is licensed CC BY-NC-SA 3.0 by the Minecraft Wiki contributors — not under the Codex’s CC BY-SA 4.0, and it may not be used commercially. Edits belong upstream, not here.

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Minecraft 12w18a
Java Edition 12w18a.png: Infobox image for Minecraft version 'Minecraft 12w18a'
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    "title": "Minecraft 12w18a",
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            "label": "(link to Tutorial:Installing a version#Manual version installation article, displayed as Downloads)"
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            "field": "<span class=\"plainlinks\">[https://en.wikipedia.org/wiki/Java_version_history#Java_SE_5 Java SE 5]</span>",
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12w18a is the fourth snapshot for Java Edition 1.3.1, released on May 3, 2012.[1]

This is the first version that makes singleplayer worlds run on a local server, resulting in the use of separate threads for rendering logic and world logic. This change resulted in a large number of broken features, some of which are yet to be fixed in the latest version, and on weak computers can result in server-lag in singleplayer.

Additions

Blocks

Wood, Leaves, Planks, and Stone Bricks Variants

  • Now have their proper names (e.g. "Oak Wood", "Birch Leaves", "Spruce Wood Planks", "Mossy Stone Bricks").

Changes

Items

Book and Quills

  • Game no longer pauses when writing in a book and quill.

Cocoa Beans

  • Now obtainable from jungle tree leaves.

Signs

  • Game no longer pauses when writing in a sign.

Wooden Tools

  • Can now smelt one item in a furnace.

Mobs

Villagers

  • When spawned from spawn eggs, they now get a random profession.

Gameplay

Breaking

  • The 1⁄4 second (5 tick) delay between block breaking has been removed for players in Survival. The player can now instantly mine a large amount of blocks in Survival simply by holding destroy if conditions are met.

Hardcore

Singleplayer

  • Separated server logic and client, therefore singleplayer is now a local server.

Command format

General

  • Game no longer pauses when entering a command or pausing the game.

General

Debug screen

  • Coordinates are now rounded to 5 digits.
  • "ws", "fs" and "g" (Walking speed, flying speed and ground; "g" is true if the player is touching the ground).

Language

  • Updated language files.

Texture packs

  • Support and auto-download for server texture packs.

Server jar

  • The server jar now accepts command-line arguments --demo, --port, --singleplayer, --universe, and --world. The old nogui argument still works for backward compatibility.

Removals

General

Infinite Map Visualizer

  • Removed the infinite map visualizer from the game's source code.

Features broken by the internal server

  • Many features were broken or significantly changed due to the client-server split, many of which still remain absent from the game.

Distance effects

  • The particles from adding an eye of ender to an end portal frame block no longer appear offset if performed at high distances from the world origin.
    • This is due to the fact that they simply did not appear at all from this snapshot onward, which is another bug entirely.
    • This bug resurfaced in Java Edition 19w14a when the aforementioned absent particles bug was fixed.

Player

  • The player "Notch" no longer drops an apple in addition to his inventory.

Fixes

4 bugs fixed

  • Fixed being unable to switch tools of the same kind in inventory.
  • Fixed water destroying non-solid blocks when breaking them from above.
  • Fixed picking a block in Creative with a tool in hand causing the tool to be lost.
  • Fixed Silk Touch yielding only one slab from double slabs.

Trivia

  • In this version, when loading a singleplayer world, one needs to put minecraft.zip/server/minecraft_server.jar into .minecraft/server manually to continue loading.

References

  1. ↑ "Minecraft Snapshot 12w18a" (archived) by Jens Bergensten – Mojang.com, May 3, 2012.

Sources