Minecraft:Java Edition 1.12

1.12, the release of the Minecraft:World of Color Update,<ref name=WorldOfColor>Template:Mcnet</ref> is a major update to Template:JE released on June 7, 2017. This update introduced a more vibrant color palette, a new crafting system, hints for beginners, new colored decorational blocks, like glazed Minecraft:terracotta, concrete, colored beds. It added 2 new mobs: illusioners and parrots. It also replaced achievements with a customizable and more powerful system of Minecraft:advancements, and introduced a new system for working with collections of commands, called functions. This is the first version released in 2017.

Additions

Blocks

Template:Animate Minecraft:Concrete

• Comes in the 16 traditional Minecraft:dye colors.
• Created when Minecraft:concrete powder comes into contact with still or flowing water.

Template:Animate Minecraft:Concrete Powder

• Comes in the 16 traditional dye colors.
• Gravity affected (like Minecraft:sand and Minecraft:gravel).
• When it touches water, it turns into a concrete block.
• Craftable using 4 Minecraft:sand, 4 Minecraft:gravel and one of any Minecraft:dye to get 8 concrete powder blocks. The recipe is shapeless.

Template:Animate Minecraft:Glazed Terracotta

• Comes in the 16 traditional dye colors.
• Smelt any Minecraft:stained terracotta in a furnace to obtain the glazed terracotta of that color (not for regular Minecraft:terracotta).
• Can be placed in 4 directions: north, south, west, and east.
  • When placed down while facing the right directions, a repeating pattern can be created. For example, white terracotta creates the pattern of a sun when 4 are placed down correctly.
• Does not "stick" to Minecraft:slime blocks if attached to the side, top or bottom, but does stick if attached to the front or back.

Template:Animate Colored Minecraft:Beds

• Added 15 new beds, in addition to the existing red bed.
• Crafted using three of the respective wool colors along with three of any wood planks.

Items

File:Knowledge Book JE1.png Minecraft:Knowledge Books

• A green-colored Minecraft:book.
• Currently obtainable only with the Template:Cmd command.
• A knowledge book with a Recipes NBT tag, which contains a list of item IDs, is consumed and unlocks the specified items' recipes for any player that Template:Control it.
  • Especially useful when Template:Cmd is set to true.

Minecraft:Spawn eggs

• File:Parrot Spawn Egg JE1 BE1.png Minecraft:Parrot Spawn Egg
  • Spawns parrots.

Mobs

Template:Animate Minecraft:Parrots

• Fly around, but sit when "tired".
• Tamed with Minecraft:seeds.
• If fed Minecraft:cookies, the parrot dies.
  • Minecraft:Poison effect's particles are emitted, but they are not actually killed by poison.
  • If a player feeds a tamed parrot cookies, it displays the message "Parrot was slain by <player>" in chat (unless the parrot is named).
• Follow and crowd around nearby mobs.
• Imitates sounds of hostile mobs.
• Parrots dance if playing music on a nearby Minecraft:jukebox.
• Right-click action available:
  • Right-click on a tamed parrot tells it to sit down.
• Walking over/through/near a tamed parrot while crouching causes it to sit on the player's shoulders.
  • Lets go if the player jumps.
  • Can fly with players during Minecraft:elytra flight.
• Have Template:Hp health.
• Come in red, blue, green, cyan and gray.
• Spawn only in Minecraft:jungles.

File:Illusioner JE1.png Minecraft:Illusioners

• New Minecraft:illager.
• Affects players with Template:EffectLink for 20 seconds then shoots with a Minecraft:bow.
  • This spell is cast only if the Minecraft:regional difficulty is greater than 2.
• Summons duplicates of itself.
  • All duplicates show shooting animation, but only the real one can be hit and shoots the arrow.
  • The original turns invisible.
• Does not currently have a Minecraft:spawn egg, so can only be summoned with Template:Cmd.
• Targets both the player and villagers.
• Unused and present only Template:In.

Gameplay

Minecraft:Advancements

• Replaces achievements.
• Can be customized via JSON files.
• Tab-based UI.
  • 5 tabs (more supported):
    • Minecraft: The heart and story of the game.
    • Adventure: Adventure, exploration, and combat.
    • Nether: Bring summer clothes.
    • The End: Or the beginning?
    • Husbandry: The world is full of friends and food.
  • Data-driven UI, including positioning and layout.
• Supports rewards in the form of recipes, loot, Minecraft:experience and functions.
  • The only default advancements with a reward are the default "challenge" advancements, which grant experience.
  • Sounds for UI and "Challenge Complete!" Pop-up and challenge advancements "Minecraft:toasts/notifications"
• Pop-up "toast" notification for when players advance.
  • New sliding effect.
  • Comes in two different colors - yellow for normal advancements, and pink for "challenge" advancements.
• A number display tracks progress while completing advancements with multiple requirements.

Gamerules

• announceAdvancements
  • Defaults to true.
  • Toggles announcing of advancements, replacing the old announce-player-achievements Minecraft:server.properties entry.
    • If announce-player-achievements is set, the gamerule is automatically updated and announce-player-achievements is removed.
• doLimitedCrafting
  • Off by default.
  • Enabling only allows players to craft recipes they have unlocked.
• gameLoopFunction
  • A function to be executed once per tick.
• maxCommandChainLength
  • The default is 65536.
  • Determines the number at which the chain command block acts as a "chain".

Command format

• @s
  • Targets the executing entity, e.g: Template:Cmd.
• Template:Cmd
  • Can grant, test or revoke advancements, and particular advancement criteria, for a given player.
  • There are five modifiers to the command: "everything", "from", "until", "through", "only".
    • "everything" - all advancements, no specification required (same as "*")
    • "from" - this advancement, its children, and their children, etc.
    • "until" - this advancement, its parent, and its parent, etc.
    • "through" - both of the above
    • "only" - this advancement, and nothing else
  • Examples:
    • Template:Cmd
    • Template:Cmd
• Template:Cmd
  • Runs a function once through the entity or command block which ran the function command.
    • Added new arguments:
      • if <selector> - runs the function only if the specified selector is found.
      • unless <selector> - runs the function except when the specified selector is found.
• Template:Cmd
  • Can unlock, or lock, the given recipes for the given player.
  • If * is specified, it locks or unlocks all recipes for the player.
• Template:Cmd
  • Command to reload advancements and loot tables from disk.
  • This command is available to all Minecraft:opped players in single player and to all level 4 operators on a multiplayer server.
  • Cannot be run from a Minecraft:command block.

General

Minecraft:Controls

• Added keybinding options for Minecraft:Creative toolbar saving.
• Added new keybinding for opening advancements (default "L").

Minecraft:Creative

• Added "Saved Toolbars" tab.
  • Save toolbars in Creative mode with Template:Key+Template:Key and load them with Template:Key+Template:Key.
  • Can save up to 9 toolbars.
  • If the Minecraft:player saves an empty toolbar, it clears the bookmarked toolbar and puts back the 'informational paper' in the respective slot.

Functions

• Added new function system, which are text files with the file extension .mcfunction in namespace:path/to/function/file.
  • For example, running /function custom:example/test refers to the function located at WORLDNAME/data/functions/custom/example/test.mcfunction.
• Functions are a list of commands, one line per command (without a forward slash), with # comment support.

JSON format

• Added 'group' to recipe json format, to clump similar recipes together.
• Added new 'keybind' text component, to refer to the player's keybindings.

Minecraft:Title screen

• Added the ability to see credits by clicking the copyright text.

Minecraft:Narrator

• Template:Key+Template:Key toggles a text-to-speech engine that automatically reads player chat messages, including the name.
  • Option to toggle narrator between: "off", "chat & system", "chat only", and "system messages only".
• Shows a notification for toggling.
• The narrator does not read commands or command outputs, nor it reads messages produced with Template:Cmd.
• It displays a message whenever the narrator isn't available.
  • Uses the "toast" notification system.

Minecraft:NBT tags

• Template:Nbt
  • Stores the tick a chain command block was last executed in.
• Template:Nbt and Template:Nbt for breedable entities
  • Together these record the UUID of the entity that caused a given animal to breed.
• Template:Nbt
  • A compound tag containing a list of recipes, formatted as JSON, that the player has seen, as well as recipe book information.
  • Template:Nbt
    • Becomes 1 if the player has enabled the "Show Craftable" feature in the recipe book.
  • Template:Nbt
    • Checks if the player has left the GUI open.
    • Template:Nbt
  • Template:Nbt
    • Contains information about all recipes the player has seen.
    • Template:Nbt
      • Checks if the player has tried out the recipe in the recipe book before (by clicking it/viewing it).
  • Template:Nbt
    • Within are recipe names that the player has unlocked but not viewed in the crafting helper yet.
    • Used for remembering to play the animation for new recipes.
• Template:Nbt
  • A list of crafting recipes to unlock for the player that right-clicks while holding a Minecraft:knowledge book.
  • If this is not specified, the knowledge book is not consumed.
• Template:Nbt
  • A compound tag containing the X, Y, and Z coordinates of the Overworld position the player entered the Nether.
  • Template:Nbt
    • The x coordinate.
  • Template:Nbt
    • The y coordinate.
  • Template:Nbt
    • The z coordinate.
• Template:Nbt
  • Changes to 1 if the player leaves the End through the portal.
• Template:Nbt and Template:Nbt
  • Contains entity data about an entity on the left and right shoulders of the player.
• Template:Nbt
  • Defaults to 1b. If set to 0b, loops can be created, where the same command block can run multiple times in one tick.

Minecraft:Recipe books

• Catalogs recipes that are unlocked when the criteria are met.
• When a recipe is clicked, it appears in the crafting grid, and can be crafted if materials are available.
  • A shift-click ability puts all available materials in the crafting grid.
• A new white-and-gray colored "toast" notification pops up when the player unlocks new recipes.
  • The pop-up notification that displays upon unlocking new recipes has an icon showing the items that can be crafted with the new recipes.
• If the Minecraft:player searches "excitedze" in the recipe book, their language switches to Pirate Speak.
• recipes folder added with all item recipes as .json files.

Minecraft:Sounds

• New Minecraft:note block sounds.
  • Template:BlockLink = xylophone
  • Template:BlockLink = bell
  • Template:BlockLink = flute
  • Template:BlockLink = chime
  • Template:BlockLink = guitar
• New sound effects for:
  • Minecraft:Parrots
  • Minecraft:Illusioners
  • Casting a Minecraft:fishing rod
  • Reeling in a fishing rod
  • Throwing an Minecraft:eye of ender
  • Eyes of ender exploding or popping back into item form
  • Putting ender eye in Minecraft:End portal frames (dinging sound)
  • Completing the Minecraft:End portal and having the portal spawn (evil sound)
  • Minecraft:Boat paddles
  • Player drowning
  • Player burning
  • Completing a challenge Minecraft:advancement
  • Toast notifications
• New cave sounds: cave17.ogg and cave18.ogg.

Minecraft:Splashes

• "Don't feed chocolate to parrots!"
• "The true meaning of covfefe"
  • Reference to a cryptic tweet from then–U.S. President Donald Trump.
• "An illusion! What are you hiding?"
• "Something's not quite right..."
  • The top two are references to Suramar City guards in World of Warcraft, who say these lines when a player, having an illusion on themself, goes nearby.
  • The splash about the illusion could also be a reference to the Minecraft:illusioner.

Minecraft:Tutorial hints

The new tutorial hints.

• Displayed in the top right.
• Only displayed once per device.
  • Saved per player, stored in Minecraft:options.txt.
    • Name: tutorialStep
    • List of criteria: movement, find_tree, punch_tree, open_inventory, and craft_planks

Changes

Blocks

File:BannersBeforeAndAfter.png

A comparison of banner colors before and after 17w06a. Image by Jeb.<ref>Template:Tweet</ref>

File:White Banner JE2 BE2.gif Minecraft:Banners

• Color scheme has been redone.
• "Chief fess" and "base fess" banners are now just "chief" and "base" banners.

File:White Bed JE2 BE2.png Minecraft:Beds

• Now the Minecraft:player can sleep when a neutral Minecraft:zombie pigman is near.
• Now the player can bounce on the bed, albeit much less than with Minecraft:slime blocks
• Now reduce (but not negate) fall damage when landed on.
  • The player can survive a 41 block fall onto a bed without armor.
  • Any higher, and the second bounce deals the remaining amount of damage to kill them.
    • The player can create a platform around 7 blocks high beside the bed to land on to prevent death, in which case a player can survive a 45 block fall.
• Now a Minecraft:block entity, and each half can be colored individually using the NBT tag color.
• Beds now display as blocks, unlike Minecraft:Pocket Edition beds. Now use a 3D item model instead of a 2D item because of the new colors.

Minecraft:Buttons, Minecraft:Levers, Minecraft:Redstone Torches, Minecraft:Torches, and Minecraft:Tripwire Hooks

• Can now be placed on Minecraft:jack o'lanterns.
  • Minecraft:Redstone torches and Minecraft:torches still cannot be placed on top of jack o'lanterns.

Minecraft:Command Blocks

• Now executes all of the commands in a chain before scheduling them for the next tick.
  • It is now possible to stop/modify the operation of a chain via commands and get results instantly (as opposed to getting them in a 1 tick delay).
• Optimized error conditions in command blocks.
• Tab-completing command names in command blocks no longer adds a / prefix.

Minecraft:Fences, Minecraft:Cobblestone Walls, Minecraft:Glass Panes, and Minecraft:Iron Bars

• Now connect to the back and underside of Minecraft:stairs.

Minecraft:Terracotta

• Renamed from "Hardened Clay".

Minecraft:Magma Blocks

• Are now able to burn infinitely, like Minecraft:netherrack.

File:Shulker Box JE1 BE1.png Minecraft:Shulker Boxes

• Color scheme has been redone.
  • Purple shulker boxes unchanged.

Minecraft:Stairs

• The rear face and underside of stairs are now considered "solid".
  • Allows for Minecraft:torches, Minecraft:fences, Minecraft:iron bars, Minecraft:glass panes, Minecraft:cobblestone walls, and Minecraft:snow layers to connect to them properly.

File:Brown Wool JE3 BE3.png Minecraft:Wool

• Color scheme has been redone.

Items

width=32x32 Minecraft:Maps

• Dyed blocks such as Minecraft:banners and Minecraft:terracotta now have unique colors.

Mobs

File:NewShulkerColors.png

Comparison of old and new shulker and shulker box colors (The purple shulker and shulker box was later changed back to normal).

width=43x43 Minecraft:Sheep

• New color palette for wool on body.

width=43x43 Minecraft:Shulkers

• Colors changed in accordance with the changes to other block colors.
  • Purple shulkers are left the same.

width=64x64 Minecraft:Withers

• Can no longer break End gateway blocks and piston extensions.

width=44x44 Minecraft:Wolves

• New color palette for collar.

width=50x50 Minecraft:Zombie villagers

• New ConversionPlayerLeast and ConversionPlayerMost tags
  • Contains the UUID of the player that is converting the zombie villager.
  • Used with the "minecraft:cured_zombie_villager" trigger for advancements.

Non-mob entities

width=46x46 Minecraft:Minecarts with TNT

• No longer instantly explode when hit with Minecraft:fire charges; instead, they explode as if primed by an activator rail.

width=50x50 Minecraft:Paintings

• Now tries to place the largest possible in the available space it has.

Command format

• Template:Cmd and Template:Cmd
  • Now reinforces item-specific stacking restrictions.<ref name=":0">Template:Bug</ref>
    • This is a reverse of Minecraft:16w32a.<ref>Template:Bug</ref>

General

Achievements

• Removed and replaced by Minecraft:advancements.

Controls

• Pressing Template:Key now hides all toast messages.

Minecraft:Crafting

• Closing the crafting interface with items inside no longer drops the items in front of the player, but sends them instead to the inventory.

Creative

• Materials tab merged with miscellaneous tab in Creative mode.

Java version

• This is the first version to use, and thus require, Java 8.<ref name="java 8">Template:Tweet</ref>

Minecraft:Language

• Many pieces of text are now translatable, where previously they were hardcoded English.
  • The full list of changes can be found here.

Movement

• The player's body now entirely faces to the front, when moving backwards.<ref>Template:Bug, resolved as "Works as Intended" – Maria Lemón, April 22, 2017</ref><ref>Template:Reddit</ref>
  • Prior to this update, moving backwards would cause the player model to rotate one side, making it look like the player was strafing backwards somewhat.

NBT format

• Improved NBT parsing in commands.
  • Keys can now (optionally) be quoted, e.g: "Motion":[0.0,0.0,0.0].
  • Unquoted string values are now stricter; they can no longer contain spaces or special symbols, e.g: CustomName:Test Test.
  • Indices, which were previously optional in lists, are no longer allowed, e.g: Motion:[0:7.3,1:1.0,2:3.1].
  • Empty keys and values are no longer allowed.
• Improved error messaging; now points to where exactly the error occurred.

Optimizations

• Huge optimizations to Minecraft:Creative inventory searching.
• Optimized chunk loading.

Minecraft:Splashes

• "Now Java 6!" changed to "Now Java 8!"

Trivia

• 1.12, along with Minecraft:Java Edition 1.8.2, had the most pre-releases of any update at the time, with a total of 7 pre-releases.
  • This was later broken by Minecraft:Java Edition 1.13, with 10 pre-releases.
• This version was released exactly 5 years before 1.19 and 6 years before 1.20.