Java Edition 15w43a

15w43a is the thirty-fourth snapshot released for 1.9.

Additions

 * Loot tables
 * All loot from mobs, chests etc. is now based on loot tables, excluding block drops.
 * Can be changed by mapmakers by adding a json file within the "WORLD/data/loot_tables" folder, however it's broken in 43a.
 * Generated structures
 * Igloo
 * Spawn randomly in Ice Plains and Cold Taiga (but not the Hills variant).
 * Spawning parameters are shared with desert temples, jungle temples, and witch huts: the fact of a structure spawn is decided, then the biome determines which structure (if any) is spawned.
 * Created by Searge (as found in the NBT data).
 * An igloo contains: 9 White Carpets, 3 Light Gray Carpets, 2 blocks of ice, a redstone torch, a furnace, bed and a crafting table.
 * Some igloos have a stone brick basement, with a cauldron, 2 Red Carpets, a brewing stand, 3 spruce stairs, and loot chest, along with a villager priest and zombie villager priest in iron bars. A trapdoor with ladders leads down, into the mossy brick basement, cracked and stone brick also available, with 2 torches.
 * In the loot chest, there will sometimes be a Golden Apple in the central spot, hinting that the player needs to cure the Zombie.
 * Always spawns with a splash potion of weakness hinting the player to use these on the zombie to turn him into the villager next to him.
 * The zombie has the PersistenceRequired tag which makes it not despawn.
 * Silverfish spawn in some stone brick blocks.
 * NBT Tags
 * Chests/Minecart chests
 * (string): Loot table to be used to fill the chest when it is next opened or destroyed. When the chest is part of a double chest, only the half corresponding to the tagged single-chest will be affected.
 * e.g.
 * (long): Seed for generating the loot table. Used in vanilla survival to replicate chest content in new worlds with same seeds. 0 or omitted will use a random seed.
 * All mobs
 * (string): Determines which loot table will be used when the mob is killed.
 * e.g.
 * (long): The deterministic seed for grabbing data from the loot table. Used in vanilla survival to replicate chest content in new worlds with same seeds. Must not be 0.
 * e.g.
 * e.g.

Changes

 * Debug screen
 * Now shows more information.
 * gives help.
 * Shows all + key combinations.
 * now increases render distance by 1 (Minimum and Maximum are 2-32).
 * now decreases render distance by 1 (Min and Max are 2-32).
 * Shows if the pie chart and FPS chart are shown on screen.
 * Shows text in chat when you reload chunks, sounds, etc.
 * Does not open the F3 screen when you use a specific key combination like, , etc.
 * Removed, which previously reloaded sounds.
 * now reloads all resource pack content, including sounds


 * Generated structures
 * Stronghold
 * Increased number of strongholds to 128 per world, rather than 3.


 * Blocks
 * Sugar cane no longer breaks if its adjacent water is turned to frosted ice.
 * Lily pads can be placed on ice and frosted ice, but will not stay if updated.


 * Commands
 * Now displays in chat the gamemode the player switched to
 * Now displays in chat the gamemode the player switched to


 * Trading
 * Librarians charge double for books with "treasure" enchantments.


 * Enchantments
 * Frost Walker no longer works on flowing water.


 * Brewing
 * Blaze powder fuel points reduced from 30 to 20.

Note: all changes below were reverted in 15w43b and 15w43c, with the exception of the change to the drop chances from regular guardians.
 * Mobs
 * Mobs wearing armor or carrying weapons no longer drop the equipment, i.e.  and   are ignored.
 * See.
 * Chickens and rabbits now drop more than one meat item when killed with Looting.
 * See.
 * Rabbits no longer rarely drop feet.
 * See.
 * Spiders and cave spiders drop eyes more often (now 50% chance, previously a 33% chance normally and 66%/77%/82.5% with Looting) and the amount is now increased by Looting.
 * Pigs no longer drop worn saddles.
 * See.
 * Endermen no longer drop the held block.
 * See.
 * Sheared sheep now drop wool when killed.
 * See.
 * Horses no longer drop leather, bones, or rotten flesh. Saddles, horse armor, chests, and chest contents are still dropped when applicable.
 * See
 * Ghasts now drop 0–3 gunpowder and 0–2 ghast tears (up from 0–2 gunpowder and 0–1 tears), incremented as usual with Looting.
 * See in.
 * Guardians and elder guardians no longer rarely drop fish as if from fishing.
 * See.
 * Elder guardians now drop dry sponges on any kill, rather than wet sponges on a player kill.
 * Guardian and elder guardian drop chances for raw fish and prismarine crystals changed. Now it's a 40% chance for fish, 40% for crystals, and 20% of nothing, with the amount increased by Looting. Formerly it was 33% raw fish and 33% of crystals only if the raw fish drop failed, with Looting increasing the chances but not the amount.
 * Zombie pigmen now drop 0–2 rotten flesh and 0–2 gold nuggets (up from 0–1 of each), incremented as usual with Looting.
 * Skeletons now drop 0–3 arrows and 0–3 bones (up from 0–2 of each), incremented as usual with Looting.
 * Wither skeletons now drop 0–3 coal and 0–3 bones (up from 0–1 coal with "0" having double chance and 0–2 bones), incremented as usual with Looting.