Minecraft我的世界1.13 Java版17w49a更新发布！Minecraft 1.13 仍未发布，17w49a为其第9个预览版。每周快照是Minecraft的测试机制，主要用于下一个正式版的特性预览。这一周的快照都是修漏洞！修了很多漏洞。

　　17w49a的更改
　　Added new data concept: 'tags'
　　增加了新的数据概念：'tags'
　　Lots of bug fixes!
　　修了很多漏洞！
　　Tab now also cycles the command suggestions again
　　Tab再次可以循环选择命令提示了

　　修复的漏洞：
　　Fixed bug MC-99321 - Hoppers cannot pull items from double chests if second chest is blocked
　　如果第二个箱子被锁，漏斗无法从大箱子吸出物品
　　Fixed bug MC-121282 - Server icons erased on loading multiplayer menu
　　服务器图标在加载多人游戏菜单时消失了
　　Fixed bug MC-121631 - Taking items from the creative inventory search tab no longer resets search text
　　从创造模式物品栏的搜索选项卡中拿出物品后不再重置搜索文本
　　Fixed bug MC-121632 - Pressing "chat" key selects search in creative inventory/recipe book AND types the letter
　　按下“聊天”按钮会转到创造模式物品栏/配方书，并输入相应字母
　　Fixed bug MC-121648 - "Difficulty" in settings is untranslated and lowercase
　　“难度”选项未翻译，且为小写形式
　　Fixed bug MC-121665 - Key "None" display string as "key.keyboard.-1"
　　键位“无”会显示字符串“key.keyboard.-1”
　　Fixed bug MC-121705 - Cursor is offset from actual mouse location when opening GUIs while moving mouse
　　在移动鼠标时打开GUI界面，会导致光标位置偏离实际位置
　　Fixed bug MC-121709 - The clickable area to sort the statistics menu are not in the right place
　　统计菜单里的可点击区域不在恰当的位置
　　Fixed bug MC-121714 - Unable to save screenshot of PNG format
　　无法将截屏保存为PNG格式
　　Fixed bug MC-121718 - You can not select the spectator menu
　　无法选择旁观者菜单
　　Fixed bug MC-121808 - Command argument validation for single entity says player in some error messages
　　对于只容许单个实体的命令参数，错误信息写的是“玩家”一词
　　Fixed bug MC-121873 - Dark background missing from beacon GUI
　　信标GUI缺失黑色背景
　　Fixed bug MC-122148 - No Block, Item, Mob, GUI, or any other texture renders -- No sounds play
　　无方块、物品、生物、GUI，或其他所有材质的渲染——没有声音播放
　　Fixed bug MC-122270 - Pushing blocks with connections doesn't update them
　　推动有连接的方块不会导致更新
　　Fixed bug MC-122295 - Backups folder is created outside of the server directory when using a dedicated server
　　使用专门服务器时，备份文件夹创建在了服务器目录之外
　　Fixed bug MC-122309 - '/gamerule gameLoopFunction' does not tab complete function names
　　'/gamerule gameLoopFunction'无法自动补全函数名称
　　Fixed bug MC-122314 - All maps created in earlier versions are now the same
　　所有早期版本的地图都变成一样的了
　　Fixed bug MC-122355 - Crash on breaking banner: java.lang.ClassCastException: arw cannot be cast to aru
　　破坏旗帜时崩溃：java.lang.ClassCastException: arw cannot be cast to aru
　　Fixed bug MC-122383 - Pre-existing chests invisible, overlapping
　　预先存在的箱子有不可见、重叠的问题
　　Fixed bug MC-122395 - Custom player heads are called "block.minecraft.player_headnamed"
　　自定义玩家头颅的名称为"block.minecraft.player_headnamed"
　　Fixed bug MC-122492 - Debug stick can be used by non-op players
　　非管理员玩家可以使用调试棒
　　Fixed bug MC-122521 - Damaged anvil always turns to the North
　　损坏的铁砧永远朝南
　　Fixed bug MC-122536 - "set_nbt" function in loot table does not merge NBT to item
　　战利品表的"set_nbt"功能无法合并NBT标签到物品中
　　Fixed bug MC-122558 - Health criteria scoreboard objectives do not use hearts to display value anymore
　　Health类记分版目标不再使用心形显示值了
　　Fixed bug MC-122573 - Crash due to carpet and sticky pistons
　　因地毯和粘性活塞导致的崩溃
　　Fixed bug MC-122584 - Incorrect format string order in statistics
　　统计中有不正确的格式字符串顺序
　　Fixed bug MC-122625 - Order of contents of north- and east-facing double chests changed after update
　　更新之后，朝北和朝南的箱子中物品的顺序会改变
　　Fixed bug MC-122639 - Can't place lily pads on ice
　　无法在冰上放置睡莲
　　Fixed bug MC-122643 - Snow, carpet and daylight detectors culling adjacent upper slabs
　　雪、地毯和日光检测器会导致邻接的上半砖渲染出错
　　Fixed bug MC-122644 - Datapacks cannot replace vanilla crafting recipes.
　　数据包无法替换纯净合成配方
　　Fixed bug MC-122646 - Attempting to add cullface to glass panes does not work
　　向玻璃板添加剔除面不起作用
　　Fixed bug MC-122650 - Player heads aren't affected by upgrade paths, renamed to "block.minecraft.player_headnamed" + head texture does not show, only when placed
　　玩家的头不会被路径更新影响，被重命名为"block.minecraft.player_headnamed + 头部材质在放置后不显示
　　Fixed bug MC-122718 - Dirt border of "video settings" menu encroaching too far on settings
　　“视频设置”菜单的泥土材质在设置界面延伸过远

　　标签
　　Items & blocks can be "tagged" with an ID, to make testing for things much easier. For example, checking if a block is "wool" with a command needs to actually test for every wool-like block individually. Now you can test if it matches the tag minecraft:wool, instead.
　　物品和方块可以“贴上”一个ID标签，使得测试更为简便。例如，要用一条命令检测一个方块是不是“wool”，实际上需要分别检测所有羊毛类的方块。现在你可以检测方块是否匹配标签“minecraft:wool”了。

　　标签的类型
　　Currently there's block tags and item tags. You use block tags when testing for blocks in the world, and item tags for testing for items (even block-items) in inventories. It may seem like we could just stick with item tags, but not every block has an item!
　　目前有的是方块标签和物品标签。你可以用方块标签检测世界中的方块，同时可以用物品标签检测物品栏中的物品（包括方块物品）。看起来我们可以只用物品标签，但是不是所有方块都有物品形式！

　　创建标签
　　Inside data packs, you can create a file at data/(namespace)/tags/blocks/foo.json to make a block tag called namespace:foo, which contains a list of blocks that should be tagged with namespace:foo.
　　在数据包内，你可以在 data/(命名空间)/tags/blocks/foo.json 的位置创建一个文件，这样就会创建一个名为 命名空间:foo 的方块标签，里面包含着应该被贴上 命名空间:foo 的方块列表。

　　工作进展
　　There's not many default tags (both item & block have minecraft:planks and minecraft:wool currently, that's it). We're migrating things over to it, still.
　　现在还没有很多的默认标签（具体说就是，物品和方块目前只有minecraft:planks和minecraft:wool而已）。我们仍在进行迁移到标签的工作。

　　配方
　　Recipes can now refer to a tag instead of an item. This should save a few hundred thousand lines of code, somewhere.
　　在物品之外，配方现在可以指定标签了。这可以在某些地方节省好几万行代码了吧。