More than one directory for different namespaces may exist under the data directory. A data pack is identified by Minecraft based on the presence of the pack. This folder contains all the data under one or multiple namespaces. Each advancement, function, loot table, predicate, structure, recipe and tag file can be placed directly in their respective folder but sub-folders are also allowed.
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Useful pages. Minecraft links. Gamepedia support Report a bad ad Help Wiki Contact us. Explore Wikis Community Central. Register Don't have an account? Data pack. History Talk This article is about the data pack system. For the resource pack system, see Resource pack. This feature is exclusive to Java Edition. The root object. Requires 4 for 1.
Requires 5 for 1. Name this file " pack. Make sure the file extension is. In other words, remove your old file extension. You may be warned that changing a file name extension could make the file unusable. However, this actually indicates that you have renamed the pack. If you are using Microsoft Windows and can't see file extensions, for Windows 10, you can turn them on by going to the View menu of the file explorer and checking the check box for file name extensions.
For Windows beneath Windows 10, you can uncheck "hide extensions" in folder settings. Any text editor should work. It is recommended that the chosen text editor supports JSON , which is the format used by files of mcmeta extension and most other files in a data pack. Note that most text editors do not recognize mcmeta extension as JSON.
Thus, you need to configure the editors manually. This file is written in JSON! This tutorial does not go into specifics about the format now, but be aware about how things are laid out. Be very careful not to forget quotation marks, colons, and curly or square brackets.
Make sure to not write trailing commas. Missing one of these can lead to your data pack not working correctly! The following list what versions each value is associated with:. The text following "description" can be any string or a raw JSON text. In pack. Once you have created your pack. It should list two entries. When you hover over your data pack's entry, you should see the description of your data pack as you have written in description of your pack.
If you don't see your pack in the list, make sure your pack. Remember that for each open brace, quotation, or square bracket, you must have a closing bracket, quotation, or square brackets. If you still don't see your pack, make sure it's in the right folder. Make a folder called data in your data pack folder, where you have placed the pack.
In this data folder you have to create one or more folders which will act as your namespaces. Entries in data packs have resource locations in a fashion of namespace:path. Namespaces, paths and other folder and file names in the data pack should only contain the following symbols:. Most objects in the game use namespaced resource locations to prevent potential content conflicts or unintentional overrides.
For example, if two data packs add two new minigame mechanisms to Minecraft and both have a function named start. Without namespaces, these two functions would clash and the minigames would be broken. If you don't specify the namespace, it will fallback to minecraft. Make sure to always use your own namespace for anything new that you add, and only use other namespaces if you're explicitly overriding something else, or, in the case of tags , appending to something else.
For example, Minecraft uses the minecraft namespace, which means that this namespace should only be used when the data pack needs to overwrite existing Minecraft data or to add its entries to vanilla tags. To add functions, first create a folder named functions inside the namespace folder.
This will be your function file. This will be your loot table file. All the vanilla loot tables are in the minecraft namespace. To learn what each tag means, see Loot tables.
There is also a list of vanilla loot tables on that page. It is saved in an NBT format. You can create an NBT file by using a structure block or by exporting a build using a third party program like MCEdit. To add structures to a data pack, first create a folder named structures inside the namespace folder.
Then, put your structure file in this folder or in any of its subfolders. Custom world generation allows data packs to change how the world generates.
This is particularly useful in conjunction with custom worlds. To change world generation, first create a folder named worldgen inside the namespace folder. To add advancements, first create a folder named advancements inside the namespace folder. Use lowercase letters in the file name. This will be your advancement file. To add recipes, first create a folder named recipes inside the namespace folder.
This will be your recipe file. It contains a maximum of 3 strings, each string standing for one row in the crafting grid. These strings then contain a maximum of 3 single characters next to each other, each character standing for one spot in the crafting grid.
You don't need all 3 strings, nor do you need to have 3 characters in each string. But each string should contain the same amount of characters. You can use spaces to indicate empty spots. This can either be specified using item followed by an item ID or tag followed by an item data pack tag.
The result compound speaks for itself, it specified what the resulting item should be. This is the original recipe for a piston can be used as a reference :. The ingredients can be put in the crafting grid in any shape or form. In the example, there's a list inside the ingredients compound. This means any of the items in this list can be used. This is the original recipe for Fire Charge can be used as a reference :.
This is a rough example of a smelting recipe. Tags are used to group blocks, items, entities, or functions together.
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