minecraft.wiki-mirror/wiki_backup/1.17-pre1.txt

{{Infobox version
|title=Minecraft 1.17 Pre-release 1
|image=1.17-pre1.jpg
|image2=Java Edition 1.17 Pre-release 1.png
|edition=Java
|type=Pre-release
|date=May 27, 2021
|jsonhash=fdbcc84afc00e47d92288c93a46b72598c6e2cf6 |jsonfile=1.17-pre1
|clienthash=940af6eda421da56e3bf9c390df65ba713cc8f7f
|clientmap=7310449e6c7bdd202e4f2cd6bd7ad177357f473c
|serverhash=80a01a1178bcfb67b42636df3a9cdd275f3cc4d4
|servermap=1f6f65434a5ac334607a1141d676f7974308ae36
|otherdl={{dl|e0738fc94f08362fe2eff71f5bd46288d6647e21|custom|name=CavesAndCliffsPreview.zip|title=Data pack}}<ref group=note>Re-enables features set to release for [[Java Edition 1.18|1.18]].</ref>
|parent=1.17
|prevparent=1.16.5
|prev=21w20a
|next=1.17 Pre-release 2
|nextparent=1.17
}}<onlyinclude>

'''1.17 Pre-release 1''' (known as '''1.17-pre1''' in the launcher) is the first pre-release for [[Java Edition 1.17]], released on May 27, 2021,<ref>{{Mcnet|minecraft-1-17-pre-release-1|Minecraft 1.17 Pre-Release 1|May 27, 2021}}</ref> which re-added candles to [[Survival]] mode, changed [[credits]] and the glowing on signs, added new [[advancements]] and [[splash]]es, and fixed bugs.

== Additions ==
=== Blocks ===
; [[Candle]]s
* Re-added candles to the creative inventory.
* Candles can be crafted again.

; [[Potted azalea]] and [[potted flowering azalea]]
* Obtained by planting [[azalea]] or [[flowering azalea]] into a flower pot.

=== Command format ===
; {{cmd|perf}}
* Starts a recording for 10 seconds capturing metrics such as tick durations, used heap sizes and other more detailed stats.
* Executing again before the 10-second limit ends the recording early.

=== Gameplay ===
; [[Advancement]]s
* Added eleven new advancements:
** Whatever Floats Your Goat!
*** Float in a [[boat]] with a [[goat]].
** Wax On
*** Apply [[wax]] to a [[copper block]].
** Wax Off
*** Scrape wax off a copper block.
** The Cutest Predator
*** Catch an [[axolotl]] in a [[bucket]].
** The Healing Power of Friendship! 
*** Team up with an axolotl and win a fight.
** Glow and Behold!
*** Make a [[sign]] glow.
** Light as a Rabbit
*** Walk on [[powder snow]] with [[leather boots]].
** Surge Protector
*** Have lightning strike a [[lightning rod]] near a [[villager]] without setting the area on fire.
** Is It a Bird?
*** Look at a [[parrot]] through a [[spyglass]].
** Is It a Balloon?
*** Look at a [[ghast]] through a spyglass.
** Is It a Plane?
*** Look at an [[ender dragon]] through a spyglass.
* Adds new advancement triggers.
** <code>started_riding</code>
*** Triggered when player starts riding a vehicle or entity starts riding vehicle currently ridden by player.
** <code>lightning_strike</code>
*** Triggers for any player on the server when lightning finishes (i.e. entity disappears).
** <code>using_item</code>
*** Triggered for every tick of using items (like crossbows, spyglass, fishing rods, etc).

=== General ===
<!-- Added in 21w11a - were there any changes in pre1? --
; Debug
* Added {{ctrl|F3+L}} shortcut to generate and persist performance metrics from in-game.
** Pressing F3+L while in the game starts a recording for 10 seconds capturing metrics such as tick.
** Pressing F3+L before the 10 second limit ends the recording early.
** Also include reports for the integrated server on single-player worlds.
-->

; [[Predicate]]
* Added <code>lightning_bolt</code> sub-predicate.

; [[Splash]]es
* Added the following splash text:
** "<nowiki>[this splash text has been delayed until part 2]</nowiki>"
** "Contains simulated goats!"
** "Home-made!"
** "There's <<a cat on ,my keyboard!~"{{sic}}
** "The cutest predator you'll ever meet!"
** "Now you are thinking with pistons!"
** "Get to the coppah!"
** "Board game version also available!"
** "Honey, I waxed the copper!"
** "Plant-based light sources!"
** "Made by "real" people!"

; [[Tag]]s
* Added <code>lava_pool_stone_replaceables</code> block tag.
** Includes the [[Tag#blocks features_cannot_replace|#features_cannot_replace]] block tag and the [[Tag#blocks leaves|#leaves]] block tag.
* Added <code>geode_invalid_blocks</code> block tag.
** Includes [[bedrock]], [[water]], [[lava]], [[ice]], [[packed ice]], and [[blue ice]].

== Changes ==
=== Blocks ===
; [[Candle]]s
* Candles now have a different texture when lit.

; [[Sign]]s
* Glowing text on signs now has an outer glow, making text in dark colors more visible in the dark.

=== Items ===
; [[Big dripleaf]] and [[small dripleaf]]
* Changed the held item models in the player's right hand.

=== Command format ===
; {{cmd|debug}}
* Removes debug report command.
* Replaced by {{key|F3+L}} and {{cmd|perf}}.

=== Gameplay ===
; [[Advancement]]s
* Added <code>source</code> condition to <code>effects_changed</code> trigger.

; [[Crafting]]
* It is now no longer possible to craft [[suspicious stew]] using [[flowering azalea]] or [[flowering azalea leaves]].<ref>{{bug|MC-226521|||Works As Intended}}</ref>

=== General ===
; Credits
* Updated the credits, which were brought over from Bedrock Edition; as a result, the credits are significantly longer, as they include people and corporations that did not work on ''Java Edition''.<ref>{{bug|MC-226535||Java Edition is using credits from Bedrock now|Works As Intended}}</ref>
* Changed the format from {{cd|.txt}} to {{cd|.json}}.
* Now scroll faster when holding {{key|Space}}.

; [[Predicate]]
* Added <code>passenger</code>, <code>stepping_on</code> and <code>lightning_bolt</code> properties to <code>entity_properties</code> predicate
* Added <code>looking_at</code> (entity currently viewed by player) condition to <code>player</code> sub-predicate.
* Expanded <code>item</code> field on <code>item</code> predicate to <code>items</code>.
* Now accepts an array of item types.
* Expanded <code>block</code> field on <code>block</code> predicate to <code>blocks</code>.
** Now accepts an array of block types.

; [[Splash]]es
* Removed "Woo, /v/!"

; [[Tag]]s
* Added [[flowering azalea]] and [[flowering azalea leaves]] to the <code>flowers</code> block and item tags.
* Removed flowering azalea and flowering azalea leaves from the <code>small_flowers</code> block and item tags.
** This prevents [[endermen]] from picking up these blocks, as well as crafting suspicious stew with them.
* Removed [[moss carpet]] from the <code>mineable/axe</code> block tag.
* Added potted azalea bushes and potted flowering azaleas bushes to the <code>flower_pots</code> block tag.
* Added non-waxed oxidized copper variants to the <code>needs_stone_tool</code> block tag.

== Fixes ==
{{fixes|fixedin=1.17 Pre-release 1
|;old
|19690|Reducing <code>maxHealth</code> / <code>max_health</code> can cause fake death.
|65587|Lag spike while loading player head textures/player skins.
|99680|Heart jittering effect doesn't take absorption into account.
|104897|End crystals placed on exit portals generated before 1.9 do not respawn the ender dragon.
|118757|Increasing Game State Rain Level values make the game increasingly laggier and distorts UI.
|130523|Void World spawns you at y{{=}}0 even if you entered 64 air blocks in customization.
|148809|Structure block data length limited to 12.
|163945|Intersecting structures can create corrupted block entities (spawner / chest).
|189336|{{key|Shift}}ing around servers in the server list crashes the game (<code>ArrayIndexOutOfBoundsException</code>).
|190952|Apostrophe in "Developers of Mo' Creatures" heading is inconsistent with other apostrophes in credits.
|192889|When placing certain heads or putting them in entities' head slot the game stutters.
|197942|Leaves change to stone near Lava Pool (Recurrence of MC-48340).
|198957|End Portal Frames change to Stone near Lava Pool.
|202249|Angering passive mobs in new nether chunks very far away from previously generated chunks, then entering a nether portal causes server to completely freeze.
|203131|Setting the weight in Template Pool to high values will lag world and can cause out of memory error.
|209819|Server crash when pathfinding to player that is teleporting away.
|213062|A ruined portal generated in an end portal.
|218112|<code>SynchedEntityData</code> is using locks incorrectly.
|218972|The glowing effect outline omits parts of entities if the entity is invisible.
|224778|Game crashes when there is a block with no <code>facing</code> block state in <code>#wall_corals</code> and a warm ocean tries to generate.
|;dev
|203558|Lighting a candle is sometimes delayed.
|203661|Flowing liquids look very dark through tinted glass.
|203704|Candles don't show flame animations when particles are set to "Minimal".
|204649|Amethyst blocks don't make chime sounds when walked on by certain mobs.
|205035|Powder Snow Bucket is not grouped with Snowball or buckets in creative inventory.
|208604|While the mainhand is empty and there's a loaded crossbow in the offhand, the mainhand will appear invisible.
|211601|Entities are loaded after scheduled ticks are processed causing detector rails, pressure plates, etc. to turn off.
|212142|Applying glow ink on signs doesn't render the text bright without also having applied a custom color.
|212146|Glow lichen can generate floating inside underground structures.
|212207|Geodes generating inside icebergs.
|213799|Dripleaf isn't properly held in the player's hand.
|214057|Entities no longer showing flame animation when in water/lava at the same time.
|214636|Small dripleaf leafs can overlap each other and cause z-fighting.
|214684|Azaleas cannot be placed in flower pots.
|216276|Lava pools break bedrock with custom world generation.
|218831|Lots of missing shaders in the game assets.
|219762|More performant noise blending algorithm in <code>BlendedNoise</code>.
|221554|When searching, the goat spawn egg appears in the middle of the different boat types.
|221819|Inconsistency: Enderman is able to pick up flowering azalea leaves, while unable to hold other types of leaves.
|221820|Inconsistency: Enderman is able to pick up flowering azalea, while unable to hold normal azalea bush.
|223021|<code>glShaderSource</code> fails on some AMD drivers resulting in a crash on 1.17.
|223843|Mycelium inside <code>enderman_holdable.json</code> twice.
|224159|Absorbtion hearts don't have the wither heart effect.
|224349|Attempting to save multiple debug profiles during the same second fails to properly save all but the first profile.
|224445|Reloading resource packs with fabulous graphics causes screen to become black, after a few times causes crash for AMD drivers.
|224861|Falling blocks disappear for a moment when landing.
|224862|Azalea and Flowering Azaleas can take bone meal despite being on clay.
|225010|Closing the inventory in creative mode while having an item on the cursor turns it into a ghost item.
|225129|Players do not despawn until they respawn.
|225193|Goats will attempt to ram entities that are outside of the world border.
|225315|Selected text on signs blinks.
|225404|The axe is still an appropriate tool for moss carpets.
|225722|<code>java.lang.IllegalArgumentException: bound must be positive</code>.
|225773|Axolotls can make ambient noises when they're playing dead.
|226192|Crash upon attempting to create a new scoreboard objective: <code>java.lang.NullPointerException: Cannot invoke "String.toLowerCase(java.util.Locale)" because "☃" is null</code>.
|;previous
|225843|Snow layers can still generate floating over lakes.
|225850|Grass, tall grass, flower, double flower, fern, large fern and tree can generate on sand or gravel.
|225853|Minecraft sometimes crashes when trying to start 21w20a for the first time.
|225895|Floating grass can still generate above lava lakes.
|225916|Non-waxed oxidized copper blocks don't require at least stone tier to be mined.
|225919|Coal Ore from fossils can generate through bedrock.
|225929|Item statistic sorting not functioning.
|225978|Non-waxed weathered copper blocks appear twice in <code>needs_stone_tool.json</code>.
|;private
|213869|Ender dragon's death animation resets when the chunk it is in is reloaded.
}}</onlyinclude>

== Video ==
{{slicedlime|Yt3h3OjLLNY|ybsephcOJkQ}}

== Gallery ==
<gallery>
1.17-pre1(HD).jpg|Full screenshot of banner.
</gallery>

== References ==
{{reflist}}

== Notes ==
{{Notelist}}

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

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