Double Jump Enchant

Evidence

Ran on Kiln's test stand (2026-11-04): DoubleJumpEnchantFabric did not start: java.lang.NoClassDefFoundError: net/minecraft/world/item/ItemInstance.

What it needs from Kiln

• Mixin
• net.minecraft.core.HolderLookup.RegistryLookup
• net.minecraft.core.RegistryAccess
• net.minecraft.core.component.DataComponents
• net.minecraft.world.entity.EquipmentSlot
• net.minecraft.world.item.enchantment.EnchantmentHelper
• net.minecraft.world.item.enchantment.EnchantmentInstance
• net.minecraft.world.item.enchantment.ItemEnchantments
• net.minecraft.world.level.storage.loot.functions.LootItemFunction
• net.minecraft.world.level.storage.loot.functions.LootItemFunction.Builder
• net.minecraft.world.level.storage.loot.functions.SetEnchantmentsFunction
• net.minecraft.world.level.storage.loot.functions.SetEnchantmentsFunction.Builder
• net.minecraft.world.level.storage.loot.predicates.LootItemCondition
• net.minecraft.world.level.storage.loot.predicates.LootItemCondition.Builder
• net.minecraft.world.level.storage.loot.predicates.LootItemRandomChanceCondition
• net.minecraft.world.level.storage.loot.providers.number.ints.ConstantValue
• net.minecraft.world.level.storage.loot.providers.number.ints.UniformGenerator
• net.minecraft.world.item.ItemInstance
• HolderLookup.Provider.lookupOrThrow()
• Registry.get()
• Registries.ENCHANTMENT
• Player.getItemBySlot()
• ItemStack.getOrDefault()
• ItemStack.is()
• ItemStack.remove()
• ItemStack.set()
• Items.ENCHANTED_BOOK
• Level.registryAccess()
• LootPool.Builder.when()
• LootTable.Builder.pool()
• UniformContainerBase.Builder.apply()

On the roadmap: Code next to data (0.3), Mixin (0.5)

In the author's words

A server-side Double Jump enchantment for boots. Fully configurable jump strengths, max levels, and anvil book upgrades. No client mod required!

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file doublejumpenchant-fabric-26.3-1.3.0.jar. The scan reads the mod's classes; it does not run them.