Java Edition 17w16a

17w16a
Edition	computer
Type	Snapshot
Release date	April 20, 2017
Snapshot for	1.12

17w16a is the sixth snapshot released for 1.12.

Additions

General

Tutorial hints

• Will display only in survival mode, and only upon starting a new world for the first time
  • Saved per player, stored in options.txt
    • Name: tutorialStep
    • List of criteria: movement, find_tree, punch_tree, open_inventory, craft_planks, and none

Controls

• Added keybinding options for Creative toolbar saving

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

Blocks

Noteblocks

• When placed on top of a bone block, wool, clay or packed ice, the noteblock produces no sound when altered or activated. (This is to make place for new noteblock sounds coming up)
  • Added sound events (when using /playsound) for the following:
    • minecraft:block.note.bell
    • minecraft:block.note.chime
    • minecraft:block.note.flute
    • minecraft:block.note.guitar
    • minecraft:block.note.xylophone

Mobs

Illusioner

• New illager.
• Affects players with Blindness for 20 seconds then shoots with a bow.
• Summons duplicates of itself.
  • All duplicates will show shooting animation, but only the real one can be hit and shoots the arrow
• Does not currently have a spawn egg, so can only be summoned with /summon illusion_illager
• Targets both the player and villagers

Changes

General

Narrator

• Now displays a message whenever the Narrator isn't available

Controls

• Pressing F1 will now hide all toast messages

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

Blocks

Hardened clay

• Renamed to terracotta

Glazed terracotta

• Will no longer "stick" to slime blocks if attached to the side, top or bottom, but not if attached to the front or back.

Shulker box

• Colors changed in accordance with the changes to other block colors

Chain command block

• Optimized performance

Mobs

Comparison of old and new shulker and shulker box colors.

Shulker

• Colors changed in accordance with the changes to other block colors
  • This causes the 'default' (purple) shulkers and shulker boxes to be a vibrant purple that mismatches all other purpur items and blocks.

Fixes

27 issues fixed

From released versions before 1.12

• MC-9565 – Fences and Cobblestone Walls connect to Fence Gates, which are facing the other direction
• MC-95560 – Wrong command message: Last character of NBT parsing error message is missing
• MC-97662 – NBT parser regex checks for pipebars as tag declaration
• MC-114219 – NBT integer array regex matches non integer arrays
• MC-114220 – NBT integer arrays have trailing comma in string representation

From the 1.12 development versions

• MC-113915 – Inadvertently saving/overwriting saved hotbars due to stuck modifier key
• MC-114889 – Parrots on shoulders disappear when flying up in creative or spectator mode
• MC-115046 – Recipe book icon changes when wearing enchanted armor
• MC-115336 – Closing crafting menu drops or deletes items in some cases
• MC-115528 – Local client crashes when using the new shift click recipe book in a server
• MC-115603 – Shift clicking recipe deletes other applicable items with different meta data

From the previous development version

• MC-115797 – Server output shows errors and nothing else
• MC-115802 – Crash when going to Statistics/items-blocks or trying to customize Superflat settings
• MC-115806 – Clicking on coloring white bed recipe selects creating bed recipe (placing planks in armor slots of player)
• MC-115807 – Game crash if right clicked on the underside of block with torch in hand
• MC-115809 – Advancements/recipes notifications don't show correctly in F1 mode.
• MC-115812 – ⇧ Shift + F3 crashes the game
• MC-115837 – Gap between advancements and recipe toast
• MC-115873 – Can't drop items by clicking outside of inventory
• MC-115938 – Toasts darken in some GUIs and while some tooltips are displayed
• MC-115942 – Parrots imitating mobs causes null pointer exception
• MC-116004 – "Parrot" isn't translatable in the "imitates" subtitle
• MC-116136 – Parrots are invisible when on shoulder
• MC-116213 – Parrots on your shoulder change color when the player is wearing an enchanted elytra
• MC-116314 – Bows destroy other bows while crafting using recipe book
• MC-116316 – Shulker boxes not matching the new hues

From the current version, hotfixed

• MC-116352 – Crash when opening the chat settings