1.20.1-v2.16.0

LoadStructureTemplateEvent

• New event that fires after a StructureTemplate loads.
• Contains methods to modify the blocks and entities within the template.

Gel Blocks

• Now automatically perform their function without needing to implement the structure processor or use a specific StructurePiece type.
  • If the processor is already present, it will still use that.
  • This will not be done when loading a template through Structure Blocks or the place template command.

IModifyState

• Any TemplateStructurePiece that extends IModifyState will now work with it as long as the postProcess method isn't overwritten.

Data Handler

• All handlers can now mark blocks for post processing in the Properties menu.
  • Useful for making sure water flows after being placed, or updating fence connections for neighboring structures.
  • The position marked for post processing will be the position of the data handler itself, with the applied offset.
• Added structure_gel:empty as an empty data handler.
  • Its primary function is to set an offset and mark a position for post processing.
  • This is not used by default if the data handler can't be loaded from nbt.
• Fixed the structure_gel:block_state using structure_gel:chest for its data parser.

Building Tool

• The Shape tool now has Hollow Cube, Cube Frame, Pyramid, and Cone.
  • Changing the shape now uses a selection panel instead of clicking to cycle to the next value.
• The Fill tool now supports all the shapes from the Shape tool for fine control over shapes (replaces the old Mode property).
• The Clone tool now temporarily saves its selected region into a clipboard.
  • This allows for cloning to an area far away, regardless of the source being loaded.
  • The region is not actually saved to the item itself, but rather to an external file in the dimension's data folder..
  • This results in drastic client performance improvements, especially for large selections.
• The Replace tool now has a "Fuzzy" property that allows only replacing directly attached neighbors or diagonal neighbors.
• Fixed a number of vertex sorting issues with the Clone tool.
• Translatable text values in the GUI's now scroll like vanilla options buttons.
• Action history is no longer stored in a level capability. It has been moved to SavedData files to allow for more dynamic loading.

Block Entities

• Added IRotatable interface.
  • Allows a block entity to be rotated and mirroed when placed in a structure.
  • Contains void mirror(Mirror) and void rotate(Rotate).
  • Supported by vanilla's StructureTemplate (mixin), GelTemplate, relavent data handlers, and relavent Building Tool modes.

Misc

• Added an abstract item interface: StructureFinderItem
  • Contains basic methods to get/set located structure info within itself.
• Improved performance with data handler processing.
• Some registry events have been deprecated. They will become NeoForge registries in 1.20.4.