Dive in

Evidence

Ran on Kiln's test stand (2026-11-04): Divein did not start: java.lang.NoClassDefFoundError: net/fabricmc/fabric/api/networking/v1/PayloadTypeRegistry; DiveinClient did not start: java.lang.NoClassDefFoundError: net/minecraft/network/protocol/common/custom/CustomPacketPayload.

What it needs from Kiln

• Mixin
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking.Context
• net.fabricmc.fabric.api.client.networking.v1.ClientPlayNetworking.PlayPayloadHandler
• net.fabricmc.fabric.api.event.EventFactory
• net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry
• net.fabricmc.fabric.api.networking.v1.PlayerLookup
• net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking
• net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking.Context
• net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking.PlayPayloadHandler
• net.minecraft.network.FriendlyByteBuf
• net.minecraft.network.codec.StreamCodec
• net.minecraft.network.protocol.common.custom.CustomPacketPayload
• net.minecraft.network.protocol.common.custom.CustomPacketPayload.Type
• net.minecraft.network.protocol.common.custom.CustomPacketPayload.TypeAndCodec
• net.minecraft.server.MinecraftServer
• net.minecraft.tags.BlockTags
• net.minecraft.world.level.material.FluidState
• net.minecraft.world.level.material.Fluids
• Minecraft.execute()
• ClientLevel.getEntity()
• BlockPos.below()
• ServerLevel.getServer()
• ServerPlayer.getDisplayName()
• ServerPlayer.getId()
• Player.getDeltaMovement()
• Player.isFallFlying()
• Player.isInLava()
• Player.isInWater()
• Player.isSwimming()
• Player.onGround()
• BlockState.getFluidState()
• BlockState.is()

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

Custom animation when diving into fluids like water or lava

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file divein-0.1.18-26.3.jar. The scan reads the mod's classes; it does not run them.