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{{Infobox version
|title=Minecraft 18w16a
|edition=Java
|image=18w16a.png
|image2=Java Edition 18w16a.png
|type=Snapshot
|date=April 19, 2018
|clienthash=8787bc29f2a1e151123f70e21698af23374d1b08
|jsonhash=97812ee3d6cc39ed5d0eb8193704691480bdf3b1
|serverhash=87ca53126694ff105edf65d8206a4529fbadd0a3
|parent=1.13
|prevparent=1.12.2
|prev=18w15a
|next=18w19a
|nextparent=1.13.1
}}<onlyinclude>

'''18w16a''' is the thirty-second [[Minecraft:snapshot]] for [[Minecraft:Java Edition 1.13]], released on April 19, 2018,<ref>{{snap|18w16a|April 18, 2018}}</ref> which adds the [[Minecraft:Buffet]] world type and fixes bugs.

== Additions ==
=== General ===
'''[[Minecraft:World type]]s'''
* [[Minecraft:Buffet]]
** Creates single-biome worlds.
** Allows choosing between [[Minecraft:Overworld]] and [[Minecraft:The End|End]] terrain generation.
** Another way to generate chunks (checkerboard) is available by [[Minecraft:NBT format#Software|using an NBT Editor]] to open a Buffet world's [[Minecraft:Java Edition level format#level.dat format|level.dat]], and using the following code for <code>"generatorOptions"</code>:<syntaxhighlight inline lang="json">{"biome_source":{"type":"minecraft:checkerboard","biomes":[]},"chunk_generator":{"type":""}}</syntaxhighlight>.

== Changes ==
=== Blocks ===
'''[[Minecraft:Coral fan]]s'''
* Now generate in [[Minecraft:coral reef]]s, on the sides of [[Minecraft:coral block]]s.

'''[[Minecraft:Blue ice]]'''
* Is now slightly less slippery.

'''[[Minecraft:Coral block]]s'''
* Now require [[Minecraft:Silk Touch]] to drop as items when mined, otherwise they drop dead coral blocks.
* No longer instantly turn into dead coral when on land.

'''[[Minecraft:Conduit]]'''
* Particles are now blue instead of orange.

=== Mobs ===
'''[[Minecraft:Drowned]]'''
* Can now spawn extra in [[Minecraft:underwater ruins]], besides their regular spawning in the oceans.

=== Gameplay ===
'''[[Minecraft:Water]]'''
* When water spreads and would later turn into a source block, it now immediately just places a source block instead of flowing into the block first.
** This means that water can now also spread into waterloggable blocks.

'''[[Minecraft:Water Breathing]]'''
* When given from [[Minecraft:turtle shell]]s, it no longer shows particles.

=== General ===
'''Optimizations'''
* Optimized world spawn position–finding code.

'''Block and item tags'''
* New <code>valid_spawn</code> block tag for blocks that the player can spawn on.
* New block and item tags for coral.

'''[[Minecraft:Tick]]s'''
* There is now a distinction between scheduled "liquid ticks" and "block ticks".

'''[[Minecraft:Biome]]s'''
* Changed how the temperature of ocean biomes is calculated; should result in nicer transitions between oceans.
* Biome names are now translatable.
* Updated some biome names:
{| class="wikitable" data-description="Changed biome names"
! [[Minecraft:Resource location]] !! Old name !! New name
|-
| <code>hell</code> || Hell || Nether
|-
| <code>frozen_ocean</code> || FrozenOcean || Frozen Ocean
|-
| <code>frozen_river</code> || FrozenRiver || Frozen River
|-
| <code>mushroom_island</code> || MushroomIsland || Mushroom Island
|-
| <code>mushroom_island_shore</code> || MushroomIslandShore || Mushroom Island Shore
|-
| <code>desert_hills</code> || DesertHills || Desert Hills
|-
| <code>forest_hills</code> || ForestHills || Forest Hills
|-
| <code>taiga_hills</code> || TaigaHills || Taiga Hills
|-
| <code>jungle_hills</code> || JungleHills || Jungle Hills
|-
| <code>jungle_edge</code> || JungleEdge || Jungle Edge
|-
| <code>mesa_rock</code> || Mesa Plateau F || Mesa Forest Plateau
|-
| <code>mutated_desert</code> || Desert M || Mutated Desert
|-
| <code>mutated_extreme_hills</code> || Extreme Hills M || Mutated Extreme Hills
|-
| <code>mutated_taiga</code> || Taiga M || Mutated Taiga
|-
| <code>mutated_swampland</code> || Swampland M || Mutated Swampland
|-
| <code>mutated_jungle</code> || Jungle M || Mutated Jungle
|-
| <code>mutated_jungle_edge</code> || JungleEdge M || Mutated Jungle Edge
|-
| <code>mutated_birch_forest</code> || Birch Forest M || Mutated Birch Forest
|-
| <code>mutated_birch_forest_hills</code> || Birch Forest Hills M || Mutated Birch Forest Hills
|-
| <code>mutated_roofed_forest</code> || Roofed Forest M || Mutated Roofed Forest
|-
| <code>mutated_taiga_cold</code> || Cold Taiga M || Mutated Cold Taiga
|-
| <code>mutated_redwood_taiga_hills</code> || Redwood Taiga Hills M || Mutated Redwood Taiga Hills
|-
| <code>mutated_extreme_hills_with_trees</code> || Extreme Hills+ M || Mutated Extreme Hills+
|-
| <code>mutated_savanna</code> || Savanna M || Mutated Savanna
|-
| <code>mutated_savanna_rock</code> || Savanna Plateau M || Mutated Savanna Plateau
|-
| <code>mutated_mesa_clear_rock</code> || Mesa Plateau M || Mutated Mesa Plateau
|-
| <code>mutated_mesa_rock</code> || Mesa Plateau F M || Mutated Mesa Forest Plateau
|}

== Fixes ==
{{fixes|fixedin=18w16a|prefix=Minecraft
|;old
|7192|The generation of "terrain" surface layer in Nether produces local straight artifacts/glitches.
|18903|Villagers'/ Witchs' right arm doesn't have the texture flipped.
|64416|Wrong matched block names / missing distinction between block names.
|83064|Accumulated fall damage is not reset when levitation starts.
|90591|Camera instantaneously changes position when elytra is deployed, rather than smoothly.
|105194|Most of zombie villagers in a zombie village are babies.
|;dev
|125089|Floating mineshaft in new world generation
|125101|Mesa (Bryce) generation cuts off at chunk borders.
|125251|Strong Turtle Master potion makes players invincible.
|125280|Bubble columns seem to be pushable by pistons.
|125297|Force-waterlogged blocks don't spread water.
|125329|Sprinting underwater while flying in creative makes player start swimming.
|125356|Turtle Shell potion effect particles are very intrusive.
|125460|Can only pick-block the top part of kelp and can't pick-block 2 block tall sea grass.
|125647|Air time is not clamped at 300 ticks, causing 11th bubble to appear depending on overflow air time.
|125671|Swimming animation can be triggered while on horse.
|125770|Bubble columns are not created when pouring water over magma block.
|125895|Being in bubble column regions makes user drown when touching underwater ceiling.
|126104|Dispenser will not place or use the cod / salmon / puffer fish / tropical fish bucket.
|126167|Puffer fish, salmon, cod, and tropical fish spawn eggs are in incorrect positions in creative inventory.
|126304|Water buckets can catch dying fish.
|126485|Magma block/soulsand does not generate bubbles and currents with only one block of water above.
|126580|Crash on Day 1.
|126923|Water turning to ice deletes other block occupying same space as water.
|126930|Sponges do not soak up flowing water.
|126978|Sponge is working with lava.
|127006|Coral near the surface have weird dark shadows.
|127045|Duplicating fish is possible with a waterlogged block.
|127079|Lava on top of water doesn't turn water into stone.
|127366|Turtle Shell Water Breathing effect begins counting down as soon as feet touch the water.
|128058|The Coral Fans are not generated in coral reefs.
|128102|Kelp can sometimes generate with no top.
|128205|Drowned drop tridents from both loot table and held items.
|;previous
|128233|Lava is tinted incorrectly.
|128248|Bottom of the water is not tinted.
|128338|Game can't handle ultimate blue ice speed.
|128372|Items aren't faster on blue ice when being transported by a water current.
}}</onlyinclude>

== Videos ==
{{slicedlime|f_1ZEp7TAUw}}

== Trivia ==
* Unlike most of the first-of-the-week snapshots, this was released on a Thursday instead of Wednesday, similar to the snapshots before [[Minecraft:14w26a]].

== References ==
{{reflist}}

== Navigation ==
{{Navbox Java Edition versions|1.1x}}

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Minecraft:Java Edition 18w16a - Revision history

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