Extended block shapes

Evidence

Ran on Kiln's test stand (2026-11-04): ExtShape did not start: java.lang.NoClassDefFoundError: net/minecraft/server/MinecraftServer; ExtShapeClient did not start: java.lang.NoClassDefFoundError: net/fabricmc/fabric/api/client/command/v2/ClientCommandRegistrationCallback.

What it needs from Kiln

• Mixin
• com.mojang.math.Quadrant
• net.fabricmc.fabric.api.client.command.v2.ClientCommandRegistrationCallback
• net.fabricmc.fabric.api.client.command.v2.ClientCommands
• net.fabricmc.fabric.api.client.command.v2.FabricClientCommandSource
• net.fabricmc.fabric.api.client.datagen.v1.provider.FabricModelProvider
• net.fabricmc.fabric.api.command.v2.CommandRegistrationCallback
• net.fabricmc.fabric.api.creativetab.v1.FabricCreativeModeTab
• net.fabricmc.fabric.api.event.EventFactory
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents
• net.fabricmc.fabric.api.event.lifecycle.v1.ServerLifecycleEvents.ServerStarted
• net.fabricmc.fabric.api.item.v1.BlockTransformerHelper
• net.fabricmc.fabric.api.object.builder.v1.block.type.BlockSetTypeBuilder
• net.fabricmc.fabric.api.object.builder.v1.block.type.WoodTypeBuilder
• net.fabricmc.fabric.api.registry.FlammableBlockRegistry
• net.fabricmc.fabric.api.registry.OxidizableBlocksRegistry
• net.fabricmc.fabric.api.resource.v1.ResourceLoader
• net.fabricmc.fabric.api.resource.v1.pack.PackActivationType
• net.fabricmc.fabric.api.tag.convention.v2.ConventionalBlockTags
• net.fabricmc.fabric.api.tag.convention.v2.ConventionalItemTags
• net.fabricmc.loader.api.ModContainer
• net.minecraft.client.OptionInstance
• net.minecraft.client.OptionInstance.TooltipSupplier
• net.minecraft.client.OptionInstance.ValueUpdateListener
• net.minecraft.client.data.models.BlockModelGenerators
• net.minecraft.client.data.models.BlockModelGenerators.BlockFamilyProvider
• net.minecraft.client.data.models.MultiVariant
• net.minecraft.client.data.models.blockstates.MultiVariantGenerator
• net.minecraft.client.data.models.blockstates.MultiVariantGenerator.Empty
• net.minecraft.client.data.models.blockstates.PropertyDispatch
• net.minecraft.client.data.models.blockstates.PropertyDispatch.C1
• net.minecraft.client.data.models.blockstates.PropertyDispatch.C2
• net.minecraft.client.data.models.model.ModelLocationUtils
• net.minecraft.client.data.models.model.ModelTemplate
• net.minecraft.client.data.models.model.ModelTemplates
• net.minecraft.client.data.models.model.TextureMapping
• net.minecraft.client.data.models.model.TextureSlot
• net.minecraft.client.data.models.model.TexturedModel
• net.minecraft.client.data.models.model.TexturedModel.Provider
• net.minecraft.client.gui.components.AbstractWidget
• net.minecraft.client.gui.components.Button
• and 81 more

On the roadmap: Minecraft's libraries and client API (0.2), Code next to data (0.3), Mixin (0.5)

In the author's words

This mod adds more shapes for many vanilla blocks, including shapes that do not exist in vanilla Minecraft, like vertical slabs, vertical stairs or quarter pieces. Most of the blocks have vanilla behaviours, like what their base block behaves.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file extshape-fabric-3.2.1+mc26.3.jar. The scan reads the mod's classes; it does not run them.