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{{Dangerous version|multiple=true|version=development|<div>
* Due to major texture storage changes in this snapshot, certain unused or invalid blocks (like [[Minecraft:locked chest]]s) no longer have a texture to use and will [[Minecraft:crash]] the game if rendered into view.
* Mining an empty jukebox creates an invisible "Air" item. Interacting with the item will crash the game and likely delete the chunk the jukebox was in.<ref>{{bug|MC-2711||resolution=fixed}}</ref>
</div>}}
{{Infobox version
|title=Minecraft 13w02a
|image=13w02a Banner.png
|image2=Java Edition 13w02a.png
|edition=java
|type=Snapshot
|parent=1.5
|date=January 10, 2013
|clientdl=
[https://vault.omniarchive.uk/archive/java/client-release/1.5/pre/13w02a.jar Client] ([https://meta.omniarchive.uk/versions/v1/13w02a.json .json])<br>[https://vault.omniarchive.uk/archive/java/client-release/1.5/pre/13w02a-whitetexturefix.jar Experimental client] ([https://meta.omniarchive.uk/versions/v1/13w02a-whitetexturefix.json .json])
|serverdl=[https://vault.omniarchive.uk/archive/java/server-release/1.5/pre/13w02a.jar Server]
|exedl=[https://vault.omniarchive.uk/archive/java/server-release/1.5/pre/13w02a.exe .exe]
[[Category:Versions using legacy download site]]
|prevparent=1.4.7
|prev=13w01b
|next=13w02b
|nextparent=1.5.1
}}<onlyinclude>

'''13w02a''' is the third [[Minecraft:snapshot]] for [[Minecraft:Java Edition 1.5]], released on January 10, 2013.<ref>https://web.archive.org/web/20130112233704/http://www.mojang.com/2013/01/minecraft-snapshot-13w02a/</ref>

An experimental version of 13w02a was released by [[Minecraft:Dinnerbone]] on [[Minecraft:Mojira]] to try to fix an issue with white textures.<ref>[https://bugs.mojang.com/browse/MC-6764?focusedCommentId=35251#comment-35251 MC-6764 (comment 35251)] – Nathan Adams on Mojira, January 11, 2013.</ref>

== Additions ==
=== Blocks ===
'''[[File:Activator Rail JE1 BE1.png|32px]] [[Minecraft:Activator rail]]s'''
* Used to trigger [[Minecraft:minecarts with TNT]].
* Need to be powered by [[Minecraft:redstone]].
* Transmit power up to 8 activator rails far.
* Crafted the same way as normal [[Minecraft:rail]]s except without a stick in the middle.

'''[[File:Block of Quartz JE1 BE1.png|32px]] [[Minecraft:Block of quartz]]'''
* New building block.
* Made by using 4 pieces of [[Minecraft:nether quartz]] in a square.

'''[[File:Chiseled Quartz Block (UD) JE1 BE1.png|32px]] [[Minecraft:Chiseled quartz block]]'''
* New building block.
* Crafting recipe is 2 [[Minecraft:quartz slab]]s vertically.

'''[[File:Quartz Pillar (UD) JE1 BE1.png|32px]] [[Minecraft:Pillar quartz block]]'''
* New building block.
* Crafting recipe is 2 blocks of quartz vertically.

'''[[File:Quartz Slab JE1 BE2.png|32px]] [[Minecraft:Quartz slab]]s'''
* New slab block.
* Crafting recipe is the same except that it is made out of any quartz block.

'''[[File:Quartz Stairs (N) JE1.png|32px]] [[Minecraft:Quartz stairs]]'''
* New stair block.
* Crafting recipe is the same except that it is made out of any quartz block.

=== Non-mob entities ===
'''[[Minecraft:Minecart with TNT]]'''
* Triggered by [[Minecraft:activator rail]]s.
* Crafting recipe is a [[Minecraft:TNT]] block on top of a [[Minecraft:minecart]] (allowing for creation in the 2×2 inventory).
* When it derails, it explodes instantly, ignoring the usual timer delay.
* Explodes even more violently the faster it goes.
* In Creative mode, when left clicked while moving, the minecart with TNT explodes.

=== Gameplay ===
'''[[Minecraft:Death messages]]'''
* Now includes the cause of death, the player the deceased player was fighting at time of death, and the name of the item used to kill.
* For death messages for fall damage, a complicated system was introduced.
** There are now two types of messages, "[player] <first>" and "[player] <first> and <last>".
*** <first> can be:
**** fell [off a ladder/off some vines/out of the water/fell from a high place]
**** was [shot/pummeled/blown/fireballed/knocked] [off a ladder/off some vines/out of the water/from a high place]
**** was [shot/pummeled/blown/fireballed/knocked] [off a ladder/off some vines/out of the water/from a high place] by [player/mob]
*** <last> can be:
**** into a pool of lava
**** fell out of the world
**** into a patch of fire
**** into a patch of cacti
**** got finished off by [player/mob]
**** got finished off by [player/mob] using [item]
**** got finished off using [item]
** There are 352 different death messages for falling. (Technically there are 416 because the verb "blown" exists twice in the en_US.lang file.)

== Changes ==
{{info needed section|
* ID changes for empty minecarts and minecart with furnace/chest
* NBT changes for standard minecarts and displaying of custom blocks within}}

=== Blocks ===
'''[[Minecraft:Anvil]]s'''
* Improved naming of containers.
** Renamed chests, trapped chests, dispensers, furnaces, brewing stands, and enchantment tables display the new name in their GUI where the normal name used to appear.

'''[[Minecraft:Hopper]]s'''
* Is now controllable by [[Minecraft:redstone]] – players can power it to disable item forwarding.
* Added a proper icon.
* Is no longer considered wooden (cannot be used as a fuel in a furnace, etc.).
* New crafting recipe uses [[Minecraft:iron ingot]]s rather than [[Minecraft:stone]].
* The redstone signal emitted when a [[Minecraft:redstone comparator]] is placed against it directly has changed.
** 1 item gives a signal strength of 1, a 1/3 of a stack (21 for items which stack to 64) gives a signal strength of 2.
** The number of full stacks x 3 = signal strength.
** E.g. 2 stacks of an item/block give a signal strength of 6, while 2 potions also give a signal strength of 6 (because a potion occupies one stack).

'''[[Minecraft:Lava]] '''
* Changed textures.
* Now flows more quickly in [[Minecraft:the Nether]].
* Enclosed hidden lava [[Minecraft:spring]]s now generate in the Nether.

'''[[Minecraft:Redstone comparator]]'''
* Updated texture.
* When fed by containers, they now start giving out a signal as soon as 1 item is in the container, allowing for empty container detection.

'''[[Minecraft:Slab]]s'''
* The final [[Minecraft:seamless Stone Slab|"seamless" stone slab]] (and, by extension, [[Minecraft:smooth stone]]) has been removed as a result of the addition of quartz slabs.

'''[[Minecraft:Trapped chest]]s'''
* Now in "Decoration Blocks" tab in [[Minecraft:Creative inventory]].

=== Items ===
'''[[Minecraft:Fireball]]'''
* The texture of fireballs has been accidentally changed from [[File:Fire Charge JE1 BE1.png|32px]] to [[File:Ghast_Fireball_13w02a.png|32px]].<ref>{{bug|MC-6758}}</ref>

=== Mobs ===
'''General '''
* Improved naming of [[Minecraft:spawn egg]]s.
** Mobs spawned from renamed eggs have the name of the egg and the names appear in the [[Minecraft:Server#Death messages|death message]].
** Mobs can now display their custom name as nametag using [[Minecraft:NBT]] data.

'''[[Minecraft:Skeleton]]s'''
* Improved aiming.
* Now shoots from 15 blocks away, instead of 10.
* Accuracy changes with [[Minecraft:difficulty]].

=== World generation ===
'''[[Minecraft:Mineshaft]]s'''
* Changed the chests to [[Minecraft:minecarts with chests]].

=== Gameplay ===
'''[[Minecraft:Language]]'''
* Updated language files.
** Language files can now be updated via the background downloader (no need for a new Minecraft release).

'''[[Minecraft:Missing textures and models]]'''
* Changed the missing texture from {{pximg|Missing Texture JE1.png|64px}} to {{pximg|Missing Texture JE2.png|64px}}.
* Is now present in the [[Minecraft:texture atlas]]es <samp>[[Minecraft:stitched_terrain.png]]</samp> and <samp>[[Minecraft:stitched_items.png]]</samp>.

'''[[Minecraft:Texture pack]]s'''
* Textures now use one file per block/item, which are stitched together at runtime – texture sizes don't need to be consistent.
* Any block and item can be animated by putting the frames underneath each other in the right .png – player can use an optional .txt to specify frame order and duration.
* Textures for animated blocks or items (water, lava, fire, nether portal, compass and clock) are no longer procedurally generated, and now have their own texture files.
* Existing texture packs are "automagically" converted.
* Vanilla textures are used if texture files are missing.

== Fixes ==
{{fixes|fixedin=13w02a|prefix=Snapshot
|;old
|737|Map scaling breaks the map sometimes.
|1086|[FIXED] Command block/Repeater acting weirdly.
|1642|Minecart noise gets stuck on long cart rides. Bumping, choppy sound.
|1972|Redstone torch sometimes update instantly (not the North/South quirk).
|2257|Minecraft VERY slow to join/update a server, takes LONG time to login (30 seconds/ 1 min).
|2526|Rain animation glitches through the ceiling.
|2806|Anvils will sometimes hit the edge of a block and break instead of being placed.
|3597|Floating minecart tracls when pushed by one-pulse piston.
|3662|Pistons and other Non-Solid blocks.
|4752|Failed to save player profile.
|5691|1.4.6 - Windows 8 64x - Mouse: View issues/Accuracy error?
|6131|Crash upon reloading texture pack.
|6699|Reading Bytes in Minecraft code has a possible flaw.
|;dev
|5722|Destroying a Daylight Sensor by hand works as quick as with a pickaxe, but only using a pickaxe the item drops.
|5777|Game stop reading clicks when you are clicking very fast.
|5788|Inactive detector rail outputs redstone through block.
|5874|Shift left double-click doesn't work.
|;previous
|5998|Item duplication by using the hopper.
|6125|Adding an item to the chest decreases output signal level.
|6165|Comparators cannot determine if a container is empty.
|6202|Cacti grow extremely quickly.
|6265|Hoppers can be used as fuel in furnaces.
}}</onlyinclude>

== References ==
{{reflist}}

== Navigation ==
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Minecraft:Java Edition 13w02a - Revision history

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