Wither Spawn Animation

Evidence

Ran on Kiln's test stand (2026-11-04): WitherSpawnAnimationMod did not start: java.lang.NoClassDefFoundError: net/minecraft/world/level/LevelReader; WitherSpawnAnimationClient did not start: java.lang.NoClassDefFoundError: net/minecraft/client/model/EntityModel.

What it needs from Kiln

• Mixin
• com.mojang.blaze3d.vertex.PoseStack
• com.mojang.math.Axis
• net.fabricmc.fabric.api.client.rendering.v1.EntityRendererRegistry
• net.fabricmc.fabric.api.client.rendering.v1.ModelLayerRegistry
• net.fabricmc.fabric.api.client.rendering.v1.ModelLayerRegistry.TexturedLayerDefinitionProvider
• net.fabricmc.fabric.api.gamerule.v1.GameRuleBuilder
• net.fabricmc.fabric.api.gamerule.v1.GameRuleBuilder.BooleanRuleBuilder
• net.minecraft.advancements.triggers.CriteriaTriggers
• net.minecraft.advancements.triggers.SummonedEntityTrigger
• net.minecraft.client.animation.AnimationChannel
• net.minecraft.client.animation.AnimationChannel.Interpolation
• net.minecraft.client.animation.AnimationChannel.Interpolations
• net.minecraft.client.animation.AnimationChannel.Target
• net.minecraft.client.animation.AnimationChannel.Targets
• net.minecraft.client.animation.AnimationDefinition
• net.minecraft.client.animation.AnimationDefinition.Builder
• net.minecraft.client.animation.Keyframe
• net.minecraft.client.animation.KeyframeAnimation
• net.minecraft.client.animation.KeyframeAnimations
• net.minecraft.client.model.EntityModel
• net.minecraft.client.model.geom.ModelLayerLocation
• net.minecraft.client.model.geom.ModelPart
• net.minecraft.client.model.geom.PartPose
• net.minecraft.client.model.geom.builders.CubeDeformation
• net.minecraft.client.model.geom.builders.CubeListBuilder
• net.minecraft.client.model.geom.builders.LayerDefinition
• net.minecraft.client.model.geom.builders.MeshDefinition
• net.minecraft.client.model.geom.builders.PartDefinition
• net.minecraft.client.renderer.SubmitNodeCollector
• net.minecraft.client.renderer.entity.EntityRenderer
• net.minecraft.client.renderer.entity.EntityRendererProvider
• net.minecraft.client.renderer.entity.EntityRendererProvider.Context
• net.minecraft.client.renderer.entity.state.EntityRenderState
• net.minecraft.client.renderer.texture.OverlayTexture
• net.minecraft.core.Direction.Axis
• net.minecraft.core.particles.ParticleTypes
• net.minecraft.network.protocol.game.ClientboundAddEntityPacket
• net.minecraft.network.protocol.game.ClientboundStopSoundPacket
• net.minecraft.network.syncher.EntityDataSerializers
• net.minecraft.network.syncher.SynchedEntityData
• and 41 more

On the roadmap: Minecraft's libraries and client API (0.2), Code next to data (0.3), Machines (0.4), Mixin (0.5)

In the author's words

An animation that plays when a Wither is spawning

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file wither-spawn-animation-FABRIC-26.3-1.0.0.jar. The scan reads the mod's classes; it does not run them.