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package moe.nea.firmament.features.texturepack
import com.google.gson.JsonObject
import com.mojang.serialization.MapCodec
import com.mojang.serialization.codecs.RecordCodecBuilder
import net.minecraft.client.item.ItemModelManager
import net.minecraft.client.render.item.ItemRenderState
import net.minecraft.client.render.item.model.BasicItemModel
import net.minecraft.client.render.item.model.ItemModel
import net.minecraft.client.render.item.model.ItemModelTypes
import net.minecraft.client.render.model.ResolvableModel
import net.minecraft.client.world.ClientWorld
import net.minecraft.entity.LivingEntity
import net.minecraft.item.ItemStack
import net.minecraft.item.ModelTransformationMode
import net.minecraft.util.Identifier
object HeadModelChooser {
val IS_CHOOSING_HEAD_MODEL = ThreadLocal.withInitial { false }
interface HasExplicitHeadModelMarker {
fun markExplicitHead_Firmament()
fun isExplicitHeadModel_Firmament(): Boolean
companion object{
@JvmStatic
fun cast(state: ItemRenderState) = state as HasExplicitHeadModelMarker
}
}
data class Baked(val head: ItemModel, val regular: ItemModel) : ItemModel {
override fun update(
state: ItemRenderState,
stack: ItemStack?,
resolver: ItemModelManager?,
transformationMode: ModelTransformationMode?,
world: ClientWorld?,
user: LivingEntity?,
seed: Int
) {
val instance =
if (IS_CHOOSING_HEAD_MODEL.get()) {
HasExplicitHeadModelMarker.cast(state).markExplicitHead_Firmament()
head
} else {
regular
}
instance.update(state, stack, resolver, transformationMode, world, user, seed)
}
}
data class Unbaked(
val head: ItemModel.Unbaked,
val regular: ItemModel.Unbaked,
) : ItemModel.Unbaked {
override fun getCodec(): MapCodec<out ItemModel.Unbaked> {
return CODEC
}
override fun bake(context: ItemModel.BakeContext): ItemModel {
return Baked(
head.bake(context),
regular.bake(context)
)
}
override fun resolve(resolver: ResolvableModel.Resolver) {
head.resolve(resolver)
regular.resolve(resolver)
}
companion object {
@JvmStatic
fun fromLegacyJson(jsonObject: JsonObject, unbakedModel: ItemModel.Unbaked): ItemModel.Unbaked {
val model = jsonObject["firmament:head_model"] ?: return unbakedModel
val modelUrl = model.asJsonPrimitive.asString
val headModel = BasicItemModel.Unbaked(Identifier.of(modelUrl), listOf())
return Unbaked(headModel, unbakedModel)
}
val CODEC = RecordCodecBuilder.mapCodec {
it.group(
ItemModelTypes.CODEC.fieldOf("head")
.forGetter(Unbaked::head),
ItemModelTypes.CODEC.fieldOf("regular")
.forGetter(Unbaked::regular),
).apply(it, ::Unbaked)
}
}
}
}
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