Spawner fix

Calls something that is on Kiln's roadmap. Parts of it may already run.

Evidence

Ran on Kiln's test stand (2026-11-04): SpawnerFix did not start: java.lang.NoClassDefFoundError: net/fabricmc/fabric/api/gamerule/v1/GameRuleBuilder; SpawnerFixClient 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.command.v2.CommandRegistrationCallback
net.fabricmc.fabric.api.gamerule.v1.GameRuleBuilder
net.fabricmc.fabric.api.gamerule.v1.GameRuleBuilder.BooleanRuleBuilder
net.fabricmc.fabric.api.gamerule.v1.GameRuleBuilder.IntegerRuleBuilder
net.fabricmc.fabric.api.gamerule.v1.GameRuleEvents
net.fabricmc.fabric.api.gamerule.v1.GameRuleEvents.ValueUpdate
net.fabricmc.fabric.api.networking.v1.PacketSender
net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry
net.fabricmc.fabric.api.networking.v1.PlayerLookup
net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents
net.fabricmc.fabric.api.networking.v1.ServerPlayConnectionEvents.Join
net.fabricmc.fabric.api.networking.v1.ServerPlayNetworking
net.minecraft.commands.CommandSourceStack
net.minecraft.commands.Commands
net.minecraft.commands.Commands.CommandSelection
net.minecraft.network.FriendlyByteBuf
net.minecraft.network.codec.ByteBufCodecs
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.server.network.ServerGamePacketListenerImpl
net.minecraft.util.Mth
net.minecraft.world.level.gamerules.GameRuleCategory
net.minecraft.world.level.gamerules.GameRules
ServerLevel.getGameRules()

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

Bring back useful mob spawners! Spawner Fix removes the annoying 16-block proximity limit, extending the activation range to a full 128 blocks to match normal mob spawning.

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file spawner-fix-1.1.2.jar. The scan reads the mod's classes; it does not run them.

Reports from players

No reports from players yet.

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