Differences

This shows you the differences between two versions of the page.

--- tutorial:datafixer:start [2020/01/17 03:37] – More warnings i509vcb
+++ tutorial:datafixer:start [2024/02/04 23:49] (current) – removed modmuss50
@@ Line 1: / Line 1: @@
-====== DataFixers: An introduction ======
-==== A forewarning ====
-DataFixing is a very complex subject and we do not take any responsibility for damaged worlds and or saves. If you are trying something out, please backup your worlds.
-Most importantly **__DO NOT COPY CODE WITHOUT READING WHAT IT DOES__**.
-==== What is a DataFixer? And why would you use one? ====
-The name honestly explains what it does, it fixes data by converting an old data format to a newer one. DataFixers are used in cases ranging from renaming an item to **The Flattening** inside Minecraft.
-==== Okay so how do you use it ====
-Hold on a second you are probably going to need a lot of context first or you will be entirely confused, so just read on a bit more.
-===== DataFixerUpper =====
-DataFixerUpper (DFU) is the library Mojang created for DataFixing. Without getting into 10 academic articles it uses Profunctor Optics and some other mathematical magic to transform the datasets.
-==== What can it do? ====
-DFU within Minecraft has been used to do many things including:
-  * The Flattening.
-  * Changing entity NBT so UUIDs are stored as Greatest and Least Significant bits instead of a String.
-  * Converting villagers to new 1.14 data format.
-  * Renaming Biomes.
-  * Renaming Entities.
-  * Renaming Items (both on ground, in entities and in BlockEntities)
-  * Changing block names.
-  * Anything else if you are willing to try to wrap your head around DSL (covered later on).
-=== So what's next? ===
-Next up is learning about Schemas... [Schemas Page is WIP and will come out soon]