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UpdateAquaticPreview
1.13 (officially the Update Aquatic) is a major Java Edition update released on July 18, 2018.[1][2] It focuses largely on revamping the oceans and adding or changing technical features.[3][4]

Originally, this update was intended to be released as two separate updates: 1.13 "Technically Updated" would have the technical changes and 1.14 "Update Aquatic" would have the ocean features.

Additions

Mobs

  • Dolphin
    • Once fed raw fish, they will lead players to shipwrecks of ocean ruins.[citation needed].
    • They are neutral, and if attacked, that dolphin along with other dolphins will attack that player.
  • Drowned
    • Zombie-like mobs that can spawn in underwater areas.
    • Regular Zombies can also turn into drowned mobs if they are underwater for long enough.
    • New zombie variant.
    • Considered undead.
  • Fish
    • Includes cod, salmon, pufferfish, and tropical fish(replaces Clownfish).
      • Tropical fish have 3072 different colors, patterns, and shapes.
    • Pufferfish can poison a player and puff up.
    • When killed they will drop their item form. Tropical fish currently drop Clownfish
  • Turtle  
    • Lay eggs on the sand, young will crawl back to water.
    • When mature, will return to the home beach.
    • Eggs can be picked up with silk touch only.
    • Spawns in warm beaches.
  • Phantom (Mob B)
    • Swoops down from the sky in groups.
    • Attracted to insomnia (those who haven't slept in many Minecraft days).
    • Undead mob (Inverts healing/harming potion effects, takes additional damage from Smite enchant)
    • Usually flies at high altitudes.

Items

  • Trident
    • Can be thrown or used as melee.
    • Loyalty enchantment makes it come back to a player.
    • Impaler enchantment increases its damage.
    • Riptide enchantment lets a player lunge forward while using it.
    • Channeling enchantment lets a player summon lightning.
  • Items for smooth quartz, smooth red sandstone, smooth sandstone, and smooth stone.
  • Dried Kelp
    • Created when smelted through a furnace.
    • Can be eaten faster than other foods.
    • Restores 1 Hunger Point.
  • Heart of the Sea
    • Used to craft conduits.
  • Nautilus Shell
    • Obtained by killing the drowned.
    • Used to craft conduits.

Blocks

  • Coral
    • Comes in a plant, block, and slab form.
    • Comes in multiple different colors.
    • Found in the Coral Reef biome.
  • Kelp
    • Grows in large stacks.
  • Seagrass
    • Grows on gravel and sand.
    • Two blocks tall.
  • Turtle Eggs
    • Blocks which hatch to spawn turtles.
    • Can be stacked up to four on one block.
  • Prismarine slabs and stairs.
  • Trapdoors, buttons and pressure plates made from all six types of wood.
  • Bark blocks for all types of wood, crafted from four logs.
  • Stripped logs for all types of wood right-click a wood block with an Axe.
  • A pumpkin block, without the face. The previous pumpkin block has been renamed "Carved Pumpkin".
  • Conduit

Structures

  • Shipwrecks
    • Generate underwater
    • Made of wood and other materials
    • Contain hidden loot chests
  • Underwater Ruins
    • Found in the Oceans along with Shipwrecks and Ocean monuments
    • Made out of stone bricks
  • Icebergs
    • Generate in icy ocean biomes
    • Made of packed ice and snow
  • Coral Reefs

Options

  • FS (Fullscreen) Resolution
    • Used to change the resolution
    • Toggling automatic command suggestions added as an option (defaults on)
    • Options when editing a world to make a backup and open the backups folder.

Data Packs

  • Similar to Resource Packs, but for loot tables, advancements, Functions, and structures.
    • Can be changed from world to server side.
    • Used by placing them into the world or server file, and it is also possible to use multiple data packs or none at all
  • Data packs are ZIP files with an in pack.mcmeta the root. The packs are located in (world)/datapacks
  • Structures will load from (world)/generated/structures/(namespace)/(file).nbt before checking data packs.
  • Reloadable using the /reload command.

Commands

  • A command UI when typing commands in the chat, with different components of commands being displayed in different colors. Errors are displayed in red without having to run the command
  • An nbt argument in target selectors.
  • A new command parsing library, known as brigadier.

Specific commands

  • /data
    • A command that allows a player to get, merge, and remove an entity and block nbt data
    • /data get block <pos> [<path>] [<scale>]
      • Will return the NBT data from the block at pos as its result (if a path is specified). A path can be specified to only retrieve that nbt data, but this is limited to numeric tags. An optional scale can be provided to scale the number retrieved.
    • /data get entity <target> [<path>] [<scale>]
      • Will return the NBT data from one target entity as its result (if a path is specified). A path can be specified to only retrieve that nbt data, but this is limited to numeric tags. An optional scale can be provided to scale the number retrieved.
    • /data merge block <pos> <nbt>
      • Will merge the block nbt data at pos with the specified nbt data.
    • /data merge entity <target> <nbt>
      • Will merge the entity nbt data from a target with the specified nbt data. Merging player nbt data is not allowed.
    • /data remove block <pos> <path>
      • Will remove nbt data at the path from the block at pos.
    • /data remove entity <target> <path>
      • Will remove nbt data at the path from one target entity. Removing player nbt data is not allowed.
    • Data paths look like this: foo.bar[0]."A [crazy name]".baz
  • /datapack
    • A command that controls loaded data packs
    • Has these subcommands
      • enable <name> - will enable a specific pack
      • disable <name> - will disable the specific pack
      • list [available|enabled] - will list all data packs or only the available/enabled ones.
    • Data packs are enabled by default, but if disabled they are re-enabled via these commands:
      • enable <name> - enables the specific pack, putting it in its default position
      • enable <name> first - enables the specific pack, putting it on the lowest priority
      • enable <name> last - enables the specific pack, putting it on the highest priority
      • enable <name> before <existing> - enables the specific pack, putting it on a lower priority than the existing pack

enable <name> after <existing> - enables the specific pack, putting it on higher priority after the existing pack

Changes

  • Magma Block
    • Spawns in underwater ravines
    • Creates air bubbles which a player can breathe in
    • Air bubbles make items sink to the ocean floor
  • Water
    • Items rise to the surface now
    • Will pass through slabs, fences, etc.[5]
    • Watercolor changes based on biome. 
  • Debug stick to cycle between different block states. Used by right-clicking on a block.
  • The fade effects on fireworks can now be added by combining the Firework Star with Dyes.
  • Updated LWJGL from version 2.9.4 to 3.1.2. This will increase FPS and allow smoother gameplay.
  • Changed the translation file format from key=value to JSON format, in order to support newlines. The new files use the format: {"thing": "Thing", "key": "Value", "some.translation": "Text Of Translation"}[6]
  • Swimming
    • New swimming animation while a player is in water ("sprint" in the water)
    • Previously, a player would "walk" in the water
    • A player can now swim in one-block-high places
Screen Shot 2018-03-26 at 1.31.11 PM
  • Raw Fish
    • Removed both cooked and raw fish and replaced with cooked and raw cod
  • Item frames can now be placed on floors or ceilings.
  • Optimized cloud and fog rendering
  • Optimized world spawn position-finding code
  • Credits updated to include all of the Mojang staff
  • Fonts are now saved as TrueType font files
  • 3 new pieces of underwater music by C418 have been added (ID for commands is music.under_water): Shuniji, Dragon Fish, and Axolotl
  • 3D Anaglyph removed


Fixes

All bug fixes will be posted as soon as 1.13 is released in a pastebin.com list. Please now go to minecraft.net for specific changes.

Planned changes

  • World generation will become data-driven, using JSON files

Unconfirmed features

  • The ability to change biome-dependent colors (such as foliage, water, and the sky) without needing mods[7]
  • The ability for the recipe book to show smelting recipes[8]
    • Customizable furnace recipe files[9]
  • Recipe book design might be changed[10][11]
  • /save-all, /save-on and /save-off will be replaced by /save/save enable and /save disable[12]
  • /ban, /ban-ip/pardonand /pardon-ip will be replaced by other commands[13]

Trivia

  • Update 1.13 was originally planned to be a separate, precursor to The Update Aquatic (which would have been 1.14), called "Technically Updated", but Mojang later decided to merge the two updates into one.[14]
  • Snapshot 18w03a was released on January 17, 2018. However, the snapshot contained some broken commands, so just one hour later, 18w03b was released. This was the shortest time ever between two updates.[15]
  • This is one of the few updates where Bedrock Edition gets these features first.
  • The first planned release day was May 30, 2018. However, due to crucial bug fixes needing to happen, its full release had been pushed back.[16]
  • It is currently the update with the most pre-releases, at 10 prior to its official release.

References