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12w07a is the sixth snapshot for Java Edition 1.2.1, released on February 15, 2012,[1] which adds redstone lamps and updates the world type from Region to Anvil, which increases the height limit from 128 blocks to 256.

Additions[]

Blocks[]

Redstone Lamp JE1Lit Redstone Lamp JE1 Redstone Lamp

General[]

World file format
  • Worlds now use the new Anvil file format instead of Region
    • World files now save with .mca suffixes instead of .mcr.
    • World height is now 256 blocks high instead of 128 blocks.
    • Up to 4096 block IDs can now be used.
Maltese language
  • Re-added after being removed in 12w01a.
Server.properties
  • New setting:
    • max-build-height

Changes[]

Blocks[]

Redstone torches
  • Can now be placed on the top of glass.
Torches
  • Can now be placed on the top of glass.

Items[]

Hoe
  • No longer tills dirt or grass blocks when they have another block on top of them.

Mobs[]

Drops
  • Decreased chance for the rare mob drops.
AI
  • All animals now use the new AI system.
  • Animals can now move their heads when walking.
  • Baby animals will now follow wheat.

World generation[]

Villages
  • Villagers will now repopulate villages based on how many houses there are available.
  • The player may add houses to villages, provided they are enclosed with a roof and wooden door.
  • Includes zombie sieges.[more information needed]

General[]

Multiplayer
  • Multiplayer light calculations no longer cause affected blocks to be transmitted to clients; instead the clients will recalculate the light on their own.
    • This means that chunk errors cannot be fixed by updating blocks anymore.

Fixes[]

3 bugs fixed

References[]

  1. "Minecraft Snapshot 12w07b (Updated!)" (archived) by Jens Bergensten – Mojang.com, February 15, 2012.
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