feat: Add forward port for legacy predicates

1 files changed, 21 insertions, 0 deletions

diff --git a/src/texturePacks/java/moe/nea/firmament/features/texturepack/PredicateModel.kt b/src/texturePacks/java/moe/nea/firmament/features/texturepack/PredicateModel.kt
index e21e69d..b52e96b 100644
--- a/src/texturePacks/java/moe/nea/firmament/features/texturepack/PredicateModel.kt
+++ b/src/texturePacks/java/moe/nea/firmament/features/texturepack/PredicateModel.kt
@@ -1,17 +1,22 @@
 package moe.nea.firmament.features.texturepack
 
+import com.google.gson.JsonObject
 import com.mojang.serialization.Codec
 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.item.tint.TintSource
 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
+import moe.nea.firmament.features.texturepack.predicates.AndPredicate
 
 class PredicateModel {
 	data class Baked(
@@ -46,6 +51,22 @@ class PredicateModel {
 		val overrides: List<Override>,
 	) : ItemModel.Unbaked {
 		companion object {
+			@JvmStatic
+			fun fromLegacyJson(jsonObject: JsonObject, fallback: ItemModel.Unbaked): ItemModel.Unbaked {
+				val legacyOverrides = jsonObject.getAsJsonArray("overrides") ?: return fallback
+				val newOverrides = ArrayList<Override>()
+				for (legacyOverride in legacyOverrides) {
+					legacyOverride as JsonObject
+					val overrideModel = Identifier.tryParse(legacyOverride.get("model")?.asString ?: continue) ?: continue
+					val predicate = CustomModelOverrideParser.parsePredicates(legacyOverride.getAsJsonObject("predicate"))
+					newOverrides.add(Override(
+						BasicItemModel.Unbaked(overrideModel, listOf()),
+						AndPredicate(predicate.toTypedArray())
+					))
+				}
+				return Unbaked(fallback, newOverrides)
+			}
+
 			val OVERRIDE_CODEC: Codec<Override> = RecordCodecBuilder.create {
 				it.group(
 					ItemModelTypes.CODEC.fieldOf("model").forGetter(Override::model),