WorldWeaver

🧱 New: Data-Driven Blocks & Items

Read more on the wiki.

WorldWeaver can now register blocks and items from data files. With Data-Driven Blocks & Items, a wover-pack is an ordinary data/resource pack whose data/<namespace>/wover/block/*.json and data/<namespace>/wover/item/*.json files each define one block or item, described by WorldWeaver's new classification system: what it is (kind, material, finish) plus the flags, traits and inputs that deviate from that.

• Mods ship their wover-pack inside the jar; modpack makers and players can add their own as a folder or zip in the new wover-packs folder of the game directory. Everything is loaded once at startup, and the packs are enabled automatically as data and resource packs.
• Definition files can use WorldWeaver conditions (e.g. wover:mods_loaded), so a block or item can depend on another mod being present.
• A world data pack that defines blocks cannot work (the registries are frozen before a world exists) and now asks to be moved to wover-packs.
• A client whose WorldWeaver blocks differ from the server's is told what differs.
• The old slot-based sets and the block type, material and behaviour trait builders are gone; see Changes below for what replaces them.

Features

• Datagen for packs: WoverArmorMaterialProvider writes wover/armor_material files, CreativeTabKey.everyItemOfNamespace writes a creative tab that shows every item of its namespace
• Plant loot templates wover:loot/silk_touch_or_shears_self (grass), wover:loot/drop_leaves_with (leaves with their own cut drop and extra item) and wover:loot/crop (a product range); two-block plants (wover:double_plant) drop only from their lower half, so breaking either half drops one
• Loot templates wover:loot/loot_table (drop what another loot table drops, optionally only for an item tag or list of tools) and wover:loot/drop_other (drop another item instead of the block)
• Wood types and stone sets for packs built with datagen: WoodTypeKey defines a pack's wood type in code and WoverDefinitionsProvider writes it to data/<ns>/wover/wood_type; BlockSet.named names a set of a base material (wover:stone) after its stone
• Blocks that hold a pack's own fluid: wover:underwater_plant and wover:ore/cluster take the input fluid, the new wover:underwater_kelp / wover:underwater_kelp_plant pair is vanilla's kelp in any fluid, and wover:replace_fluid can replace blocks holding the old fluid (contained)
• Armor materials from definition files
• Villager types can bring their own skins and texture variants
• Villager types and professions from definition files
• Data-driven portals: wover-portal-api
• A client whose WorldWeaver blocks differ from the server's is told what differs
• Definition files use WorldWeaver conditions
• A world data pack that defines blocks asks to be moved to the wover-packs folder
• Block and item definitions load from the wover-packs folder
• Block and item classifications have codecs

Changes

• The old slot-based sets and the block type, material and behaviour trait builders are gone
• block_properties.json no longer has a renderLayer column
• Add SurvivesOnTrait, #wover:plant_like and the flags TICKING, SPREADING, TILLABLE, COMPOSTABLE
• Finishes are values on the classification, not Kind variants
• Fold the Kinds and Materials override holders into Overrides
• Add the classified block core to wover-block-api

Fixes

• Block items that show their block's model keep the block's item tint (tinted leaves no longer show grey in the inventory)
• Single player worlds no longer hang on the loading screen
• A later FLAMMABLE trait on a block now replaces an earlier one instead of being ignored

Validation

• ✅ Dedicated server (Minecraft 26.3) started (WorldWeaver 26.302.0, BCLib 26.302.0, BetterNether 26.302.0, BetterEnd 26.302.0, wunderreich 26.302.0)
• ✅ wover-biome-api / BiomesOPlenty + Terralith (BiomesOPlenty-fabric-26.3-26.3.0.0.13.jar, Terralith_26.3_v2.6.5+26.3.jar, GlitchCore-fabric-26.3-26.3.0.0.3.jar, TerraBlender-fabric-26.3-26.3.0.0.9.jar, lithostitched-2.0.5-fabric-26.3.jar, tested: gametest)
• ✅ wover-generator-api / BiomesOPlenty + Terralith (BiomesOPlenty-fabric-26.3-26.3.0.0.13.jar, Terralith_26.3_v2.6.5+26.3.jar, GlitchCore-fabric-26.3-26.3.0.0.3.jar, TerraBlender-fabric-26.3-26.3.0.0.9.jar, lithostitched-2.0.5-fabric-26.3.jar, tested: gametest+worldgen)