heartfall

Evidence

Ran on Kiln's test stand (2026-11-04): HeartfallFabricEntrypoint did not start: java.lang.NoClassDefFoundError: org/apache/commons/lang3/Validate; HeartfallFabricClientEntrypoint did not start: java.lang.NoSuchFieldError: Class net.minecraft.core.registries.Registries does not have member field 'net.minecraft.resources.ResourceKey ENTITY_TYPE'.

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.entity.event.v1.ServerLivingEntityEvents
• net.fabricmc.fabric.api.entity.event.v1.ServerLivingEntityEvents.AfterDeath
• 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.item.ItemModelResolver
• net.minecraft.client.renderer.item.ItemStackRenderState
• net.minecraft.client.renderer.state.level.CameraRenderState
• net.minecraft.client.renderer.texture.OverlayTexture
• net.minecraft.network.syncher.EntityDataSerializers
• net.minecraft.network.syncher.SynchedEntityData
• net.minecraft.network.syncher.SynchedEntityData.Builder
• net.minecraft.util.LightCoordsUtil
• net.minecraft.world.damagesource.DamageSource
• net.minecraft.world.entity.EntityType
• net.minecraft.world.entity.EntityType.Builder
• net.minecraft.world.entity.EntityType.EntityFactory
• net.minecraft.world.entity.MobCategory
• net.minecraft.world.entity.MoverType
• net.minecraft.world.entity.monster.Enemy
• net.minecraft.world.item.ItemDisplayContext
• net.minecraft.world.level.storage.ValueInput
• net.minecraft.world.level.storage.ValueOutput
• net.minecraft.world.phys.AABB
• org.apache.commons.lang3.Validate
• BuiltInRegistries.ENTITY_TYPE
• Registries.ENTITY_TYPE
• ServerLevel.addFreshEntity()
• ServerLevel.noCollision()
• Entity.<init>()
• Entity.tick()
• LivingEntity.getRandom()
• LivingEntity.position()
• Player.getBbHeight()
• Player.position()
• Level.getNearestPlayer()
• and 8 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

Hostile mobs have a chance to drop floating heart shards that heal you

Scan

Scanned on 4 November 2026 against Kiln 0.2.0, file heartfall-0.4.2-fabric+26.3-SNAPSHOT.jar. The scan reads the mod's classes; it does not run them.