remove some NBTUtil functions

src/main/java/de/bixilon/minosoft/assets/minecraft/index/IndexAssetsManager.kt

@@ -17,6 +17,7 @@ import de.bixilon.kutil.collections.CollectionUtil.synchronizedMapOf
 import de.bixilon.kutil.concurrent.pool.DefaultThreadPool
 import de.bixilon.kutil.concurrent.pool.ThreadPool
 import de.bixilon.kutil.concurrent.pool.ThreadPoolRunnable
+import de.bixilon.kutil.json.JsonUtil.asJsonObject
 import de.bixilon.kutil.latch.CountUpAndDownLatch
 import de.bixilon.kutil.primitive.LongUtil.toLong
 import de.bixilon.kutil.string.StringUtil.format
@@ -33,7 +34,6 @@ import de.bixilon.minosoft.util.json.Jackson
 import de.bixilon.minosoft.util.logging.Log
 import de.bixilon.minosoft.util.logging.LogLevels
 import de.bixilon.minosoft.util.logging.LogMessageType
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.asCompound
 import java.io.File
 import java.io.FileNotFoundException
 import java.io.IOException
@@ -82,7 +82,7 @@ class IndexAssetsManager(
 
         var assets = FileUtil.safeReadFile(FileAssetsUtil.getPath(indexHash))?.readJsonObject() ?: downloadAssetsIndex()
 
-        assets["objects"].let { assets = it.asCompound() }
+        assets["objects"].let { assets = it.asJsonObject() }
         val tasks = CountUpAndDownLatch(0)
         val assetsLatch = CountUpAndDownLatch(assets.size, parent = latch)
 

src/main/java/de/bixilon/minosoft/data/accounts/types/MojangAccount.kt

@@ -16,6 +16,7 @@ package de.bixilon.minosoft.data.accounts.types
 import com.fasterxml.jackson.annotation.JsonProperty
 import de.bixilon.kutil.cast.CastUtil.nullCast
 import de.bixilon.kutil.cast.CastUtil.unsafeCast
+import de.bixilon.kutil.json.JsonUtil.asJsonObject
 import de.bixilon.kutil.uuid.UUIDUtil.toUUID
 import de.bixilon.minosoft.data.accounts.Account
 import de.bixilon.minosoft.data.player.properties.PlayerProperties
@@ -28,7 +29,6 @@ import de.bixilon.minosoft.util.http.exceptions.AuthenticationException
 import de.bixilon.minosoft.util.logging.Log
 import de.bixilon.minosoft.util.logging.LogLevels
 import de.bixilon.minosoft.util.logging.LogMessageType
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.asCompound
 import java.util.*
 
 @Deprecated("Mojang authentication is legacy. Will be removed in the future!")
@@ -117,10 +117,10 @@ class MojangAccount(
 
             Log.log(LogMessageType.AUTHENTICATION, LogLevels.VERBOSE) { "Mojang login successful (email=$email)" }
 
-            val uuid = response.body["selectedProfile"].asCompound()["id"].toString().toUUID()
+            val uuid = response.body["selectedProfile"].asJsonObject()["id"].toString().toUUID()
             return MojangAccount(
-                id = response.body["user"].asCompound()["id"].unsafeCast(),
+                id = response.body["user"].asJsonObject()["id"].unsafeCast(),
-                username = response.body["selectedProfile"].asCompound()["name"].unsafeCast(),
+                username = response.body["selectedProfile"].asJsonObject()["name"].unsafeCast(),
                 uuid = uuid,
                 email = email,
                 accessToken = response.body["accessToken"].unsafeCast(),

src/main/java/de/bixilon/minosoft/data/inventory/ItemStack.kt

@@ -42,9 +42,9 @@ import de.bixilon.minosoft.data.text.TextFormattable
 import de.bixilon.minosoft.protocol.network.connection.play.PlayConnection
 import de.bixilon.minosoft.util.BitByte.isBit
 import de.bixilon.minosoft.util.KUtil.synchronizedDeepCopy
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.compoundCast
 import de.bixilon.minosoft.util.nbt.tag.NBTUtil.getAndRemove
 import de.bixilon.minosoft.util.nbt.tag.NBTUtil.listCast
+import de.bixilon.minosoft.util.nbt.tag.NBTUtil.toMutableJsonObject
 import java.util.*
 
 class ItemStack(
@@ -182,7 +182,7 @@ class ItemStack(
 
         nbt.getAndRemove(REPAIR_COST_TAG).nullCast<Number>()?.let { repairCost = it.toInt() }
 
-        nbt.getAndRemove(DISPLAY_TAG)?.compoundCast()?.let {
+        nbt.getAndRemove(DISPLAY_TAG)?.toMutableJsonObject()?.let {
             it.getAndRemove(DISPLAY_MAME_TAG).nullCast<String>()?.let { nameTag ->
                 customDisplayName = ChatComponent.of(nameTag, translator = connection?.language)
             }

src/main/java/de/bixilon/minosoft/data/player/properties/textures/PlayerTextures.kt

@@ -2,11 +2,11 @@ package de.bixilon.minosoft.data.player.properties.textures
 
 import com.fasterxml.jackson.annotation.JsonInclude
 import com.fasterxml.jackson.module.kotlin.convertValue
+import de.bixilon.kutil.json.JsonUtil.toJsonObject
 import de.bixilon.kutil.primitive.LongUtil.toLong
 import de.bixilon.kutil.uuid.UUIDUtil.toUUID
 import de.bixilon.minosoft.util.YggdrasilUtil
 import de.bixilon.minosoft.util.json.Jackson
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.compoundCast
 import java.util.*
 
 class PlayerTextures(
@@ -25,14 +25,14 @@ class PlayerTextures(
             val json: Map<String, Any> = Jackson.MAPPER.readValue(Base64.getDecoder().decode(encoded), Jackson.JSON_MAP_TYPE)
 
             // Data also contains `signatureRequired`
-            val textures = json["textures"]?.compoundCast()
+            val textures = json["textures"]?.toJsonObject()
             return PlayerTextures(
                 name = json["profileName"]?.toString(),
                 uuid = json["profileId"]?.toString()?.toUUID(),
                 date = json["timestamp"]?.toLong()?.let { Date(it) },
-                skin = textures?.get("SKIN")?.compoundCast()?.let { return@let Jackson.MAPPER.convertValue(it) },
+                skin = textures?.get("SKIN")?.toJsonObject()?.let { return@let Jackson.MAPPER.convertValue(it) },
-                cape = textures?.get("CAPE")?.compoundCast()?.let { return@let Jackson.MAPPER.convertValue(it) },
+                cape = textures?.get("CAPE")?.toJsonObject()?.let { return@let Jackson.MAPPER.convertValue(it) },
-                elytra = textures?.get("ELYTRA")?.compoundCast()?.let { return@let Jackson.MAPPER.convertValue(it) },
+                elytra = textures?.get("ELYTRA")?.toJsonObject()?.let { return@let Jackson.MAPPER.convertValue(it) },
             )
         }
     }

src/main/java/de/bixilon/minosoft/data/registries/DefaultRegistries.kt

@@ -13,6 +13,7 @@
 
 package de.bixilon.minosoft.data.registries
 
+import de.bixilon.kutil.json.JsonUtil.asJsonObject
 import de.bixilon.minosoft.Minosoft
 import de.bixilon.minosoft.assets.util.FileUtil.readJsonObject
 import de.bixilon.minosoft.data.entities.EntityObjectType
@@ -28,7 +29,6 @@ import de.bixilon.minosoft.protocol.packets.c2s.play.EntityActionC2SP
 import de.bixilon.minosoft.protocol.packets.s2c.play.EntityAnimationS2CP
 import de.bixilon.minosoft.protocol.packets.s2c.play.title.TitleS2CF
 import de.bixilon.minosoft.util.json.ResourceLocationJsonMap.toResourceLocationMap
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.asCompound
 
 object DefaultRegistries {
     private val ENUM_RESOURCE_LOCATION = ResourceLocation("minosoft:mapping/enums.json")
@@ -62,29 +62,29 @@ object DefaultRegistries {
 
         val enumJson = Minosoft.MINOSOFT_ASSETS_MANAGER[ENUM_RESOURCE_LOCATION].readJsonObject().toResourceLocationMap()
 
-        EQUIPMENT_SLOTS_REGISTRY.initialize(enumJson[ResourceLocation("equipment_slots")].asCompound())
+        EQUIPMENT_SLOTS_REGISTRY.initialize(enumJson[ResourceLocation("equipment_slots")].asJsonObject())
-        HAND_EQUIPMENT_SLOTS_REGISTRY.initialize(enumJson[ResourceLocation("hand_equipment_slots")].asCompound())
+        HAND_EQUIPMENT_SLOTS_REGISTRY.initialize(enumJson[ResourceLocation("hand_equipment_slots")].asJsonObject())
-        ARMOR_EQUIPMENT_SLOTS_REGISTRY.initialize(enumJson[ResourceLocation("armor_equipment_slots")].asCompound())
+        ARMOR_EQUIPMENT_SLOTS_REGISTRY.initialize(enumJson[ResourceLocation("armor_equipment_slots")].asJsonObject())
-        ARMOR_STAND_EQUIPMENT_SLOTS_REGISTRY.initialize(enumJson[ResourceLocation("armor_stand_equipment_slots")].asCompound())
+        ARMOR_STAND_EQUIPMENT_SLOTS_REGISTRY.initialize(enumJson[ResourceLocation("armor_stand_equipment_slots")].asJsonObject())
 
-        ENTITY_META_DATA_DATA_TYPES_REGISTRY.initialize(enumJson[ResourceLocation("entity_meta_data_data_types")].asCompound())
+        ENTITY_META_DATA_DATA_TYPES_REGISTRY.initialize(enumJson[ResourceLocation("entity_meta_data_data_types")].asJsonObject())
 
-        TITLE_ACTIONS_REGISTRY.initialize(enumJson[ResourceLocation("title_actions")].asCompound())
+        TITLE_ACTIONS_REGISTRY.initialize(enumJson[ResourceLocation("title_actions")].asJsonObject())
 
-        ENTITY_ANIMATION_REGISTRY.initialize(enumJson[ResourceLocation("entity_animations")].asCompound())
+        ENTITY_ANIMATION_REGISTRY.initialize(enumJson[ResourceLocation("entity_animations")].asJsonObject())
-        ENTITY_ACTIONS_REGISTRY.initialize(enumJson[ResourceLocation("entity_actions")].asCompound())
+        ENTITY_ACTIONS_REGISTRY.initialize(enumJson[ResourceLocation("entity_actions")].asJsonObject())
 
 
         val registriesJson = Minosoft.MINOSOFT_ASSETS_MANAGER[REGISTRIES_RESOURCE_LOCATION].readJsonObject().toResourceLocationMap()
 
-        DEFAULT_PLUGIN_CHANNELS_REGISTRY.initialize(registriesJson[ResourceLocation("default_plugin_channels")].asCompound(), PluginChannel)
+        DEFAULT_PLUGIN_CHANNELS_REGISTRY.initialize(registriesJson[ResourceLocation("default_plugin_channels")].asJsonObject(), PluginChannel)
 
-        ENTITY_OBJECT_REGISTRY.rawInitialize(registriesJson[ResourceLocation("entity_objects")].asCompound(), null, EntityObjectType)
+        ENTITY_OBJECT_REGISTRY.rawInitialize(registriesJson[ResourceLocation("entity_objects")].asJsonObject(), null, EntityObjectType)
 
-        BLOCK_ENTITY_META_TYPE_REGISTRY.initialize(registriesJson[ResourceLocation("block_entity_meta_data_types")].asCompound(), BlockEntityMetaType)
+        BLOCK_ENTITY_META_TYPE_REGISTRY.initialize(registriesJson[ResourceLocation("block_entity_meta_data_types")].asJsonObject(), BlockEntityMetaType)
 
-        CONTAINER_TYPE_REGISTRY.initialize(registriesJson[ResourceLocation("container_types")].asCompound(), ContainerType)
+        CONTAINER_TYPE_REGISTRY.initialize(registriesJson[ResourceLocation("container_types")].asJsonObject(), ContainerType)
-        GAME_EVENT_REGISTRY.initialize(registriesJson[ResourceLocation("game_events")].asCompound(), GameEvent)
+        GAME_EVENT_REGISTRY.initialize(registriesJson[ResourceLocation("game_events")].asJsonObject(), GameEvent)
 
         initialized = true
     }

src/main/java/de/bixilon/minosoft/data/registries/blocks/BlockState.kt

@@ -13,6 +13,7 @@
 package de.bixilon.minosoft.data.registries.blocks
 
 import de.bixilon.kutil.cast.CastUtil.unsafeCast
+import de.bixilon.kutil.json.JsonUtil.toJsonObject
 import de.bixilon.kutil.primitive.BooleanUtil.toBoolean
 import de.bixilon.kutil.primitive.FloatUtil.toFloat
 import de.bixilon.kutil.primitive.IntUtil.toInt
@@ -23,7 +24,6 @@ import de.bixilon.minosoft.data.registries.blocks.types.Block
 import de.bixilon.minosoft.data.registries.materials.Material
 import de.bixilon.minosoft.data.registries.registries.Registries
 import de.bixilon.minosoft.gui.rendering.models.baked.block.BakedBlockModel
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.compoundCast
 import java.util.*
 
 data class BlockState(
@@ -104,7 +104,7 @@ data class BlockState(
     companion object {
 
         fun deserialize(block: Block, registries: Registries, data: Map<String, Any>): BlockState {
-            val properties = data["properties"]?.compoundCast()?.let {
+            val properties = data["properties"]?.toJsonObject()?.let {
                 getProperties(it)
             } ?: mutableMapOf()
 

src/main/java/de/bixilon/minosoft/data/registries/blocks/types/Block.kt

@@ -15,6 +15,7 @@ package de.bixilon.minosoft.data.registries.blocks.types
 import de.bixilon.kutil.cast.CastUtil.nullCast
 import de.bixilon.kutil.cast.CastUtil.unsafeCast
 import de.bixilon.kutil.cast.CastUtil.unsafeNull
+import de.bixilon.kutil.json.JsonUtil.asJsonObject
 import de.bixilon.kutil.primitive.DoubleUtil.toDouble
 import de.bixilon.kutil.primitive.FloatUtil.toFloat
 import de.bixilon.kutil.primitive.IntUtil.toInt
@@ -39,7 +40,6 @@ import de.bixilon.minosoft.gui.rendering.input.interaction.InteractionResults
 import de.bixilon.minosoft.gui.rendering.tint.TintProvider
 import de.bixilon.minosoft.protocol.network.connection.play.PlayConnection
 import de.bixilon.minosoft.util.CastUtil.asAnyMap
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.asCompound
 import glm_.vec3.Vec3i
 import kotlin.random.Random
 
@@ -123,7 +123,7 @@ open class Block(
             val states: MutableSet<BlockState> = mutableSetOf()
             for ((stateId, stateJson) in data["states"].asAnyMap()) {
                 check(stateJson is Map<*, *>) { "Not a state element!" }
-                val state = BlockState.deserialize(block, registries, stateJson.asCompound())
+                val state = BlockState.deserialize(block, registries, stateJson.asJsonObject())
                 registries.blockStateRegistry[stateId.toInt()] = state
                 states.add(state)
                 for ((property, value) in state.properties) {

src/main/java/de/bixilon/minosoft/data/registries/effects/StatusEffect.kt

@@ -13,6 +13,8 @@
 package de.bixilon.minosoft.data.registries.effects
 
 import de.bixilon.kutil.cast.CastUtil.unsafeCast
+import de.bixilon.kutil.json.JsonUtil.asJsonObject
+import de.bixilon.kutil.json.JsonUtil.toJsonObject
 import de.bixilon.minosoft.data.registries.ResourceLocation
 import de.bixilon.minosoft.data.registries.effects.attributes.EntityAttributeModifier
 import de.bixilon.minosoft.data.registries.registries.Registries
@@ -23,8 +25,6 @@ import de.bixilon.minosoft.data.text.RGBColor
 import de.bixilon.minosoft.data.text.RGBColor.Companion.asRGBColor
 import de.bixilon.minosoft.datafixer.EntityAttributeFixer.fix
 import de.bixilon.minosoft.util.KUtil.toResourceLocation
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.asCompound
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.compoundCast
 import java.util.*
 
 data class StatusEffect(
@@ -45,9 +45,9 @@ data class StatusEffect(
             val attributes: MutableMap<ResourceLocation, EntityAttributeModifier> = mutableMapOf()
             val uuidAttributes: MutableMap<UUID, EntityAttributeModifier> = mutableMapOf()
 
-            data["attributes"]?.compoundCast()?.let {
+            data["attributes"]?.toJsonObject()?.let {
                 for ((key, value) in it) {
-                    val attribute = EntityAttributeModifier.deserialize(value.asCompound())
+                    val attribute = EntityAttributeModifier.deserialize(value.asJsonObject())
                     attributes[ResourceLocation.getResourceLocation(key).fix()] = attribute
                     uuidAttributes[attribute.uuid] = attribute
                 }

src/main/java/de/bixilon/minosoft/data/registries/entities/EntityType.kt

@@ -15,6 +15,7 @@ package de.bixilon.minosoft.data.registries.entities
 
 import de.bixilon.kutil.cast.CastUtil.nullCast
 import de.bixilon.kutil.cast.CastUtil.unsafeCast
+import de.bixilon.kutil.json.JsonUtil.toJsonObject
 import de.bixilon.kutil.primitive.BooleanUtil.toBoolean
 import de.bixilon.minosoft.data.DefaultEntityFactories
 import de.bixilon.minosoft.data.entities.EntityMetaDataFields
@@ -30,7 +31,6 @@ import de.bixilon.minosoft.data.registries.registries.registry.Translatable
 import de.bixilon.minosoft.datafixer.EntityAttributeFixer.fix
 import de.bixilon.minosoft.protocol.network.connection.play.PlayConnection
 import de.bixilon.minosoft.util.KUtil.toResourceLocation
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.compoundCast
 import glm_.vec3.Vec3d
 import java.util.*
 
@@ -59,7 +59,7 @@ data class EntityType(
         override fun deserialize(registries: Registries?, resourceLocation: ResourceLocation, data: Map<String, Any>): EntityType? {
             check(registries != null) { "Registries is null!" }
 
-            data["meta"]?.compoundCast()?.let {
+            data["meta"]?.toJsonObject()?.let {
                 for ((minosoftFieldName, index) in it) {
                     val minosoftField = EntityMetaDataFields[minosoftFieldName.lowercase(Locale.getDefault())]
                     registries.entityMetaIndexMap[minosoftField] = index.unsafeCast()
@@ -72,7 +72,7 @@ data class EntityType(
 
             val attributes: MutableMap<ResourceLocation, Double> = mutableMapOf()
 
-            data["attributes"]?.compoundCast()?.let {
+            data["attributes"]?.toJsonObject()?.let {
                 for ((attributeResourceLocation, value) in it) {
                     attributes[ResourceLocation.getResourceLocation(attributeResourceLocation).fix()] = value.unsafeCast()
                 }

src/main/java/de/bixilon/minosoft/data/registries/items/FoodItem.kt

@@ -13,6 +13,7 @@
 
 package de.bixilon.minosoft.data.registries.items
 
+import de.bixilon.kutil.json.JsonUtil.asJsonObject
 import de.bixilon.kutil.primitive.BooleanUtil.decide
 import de.bixilon.kutil.primitive.BooleanUtil.toBoolean
 import de.bixilon.kutil.primitive.FloatUtil.toFloat
@@ -25,7 +26,6 @@ import de.bixilon.minosoft.data.registries.registries.Registries
 import de.bixilon.minosoft.gui.rendering.gui.hud.elements.hotbar.HotbarHungerElement
 import de.bixilon.minosoft.gui.rendering.input.interaction.InteractionResults
 import de.bixilon.minosoft.protocol.network.connection.play.PlayConnection
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.asCompound
 
 open class FoodItem(
     resourceLocation: ResourceLocation,
@@ -39,7 +39,7 @@ open class FoodItem(
     val timeToEat: Int
 
     init {
-        val foodProperties = data["food_properties"].asCompound()
+        val foodProperties = data["food_properties"].asJsonObject()
         nutrition = foodProperties["nutrition"]?.toInt() ?: 0
         saturationModifier = foodProperties["saturation_modifier"]?.toFloat() ?: 0.0f
         isMeat = foodProperties["is_meat"]?.toBoolean() ?: false

src/main/java/de/bixilon/minosoft/data/registries/particle/ParticleType.kt

@@ -12,6 +12,7 @@
  */
 package de.bixilon.minosoft.data.registries.particle
 
+import de.bixilon.kutil.json.JsonUtil.toJsonObject
 import de.bixilon.kutil.primitive.BooleanUtil.toBoolean
 import de.bixilon.minosoft.data.registries.ResourceLocation
 import de.bixilon.minosoft.data.registries.particle.data.ParticleData
@@ -22,7 +23,6 @@ import de.bixilon.minosoft.gui.rendering.particle.DefaultParticleFactory
 import de.bixilon.minosoft.gui.rendering.particle.ParticleFactory
 import de.bixilon.minosoft.gui.rendering.particle.types.Particle
 import de.bixilon.minosoft.gui.rendering.textures.Texture
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.compoundCast
 import de.bixilon.minosoft.util.nbt.tag.NBTUtil.listCast
 
 data class ParticleType(
@@ -43,7 +43,7 @@ data class ParticleType(
     companion object : ResourceLocationDeserializer<ParticleType> {
         override fun deserialize(registries: Registries?, resourceLocation: ResourceLocation, data: Map<String, Any>): ParticleType {
             val textures: MutableList<ResourceLocation> = mutableListOf()
-            data["render"]?.compoundCast()?.get("textures")?.listCast<String>()?.let {
+            data["render"]?.toJsonObject()?.get("textures")?.listCast<String>()?.let {
                 for (texture in it) {
                     val textureResourceLocation = ResourceLocation(texture)
                     textures += Texture.getResourceTextureIdentifier(textureResourceLocation.namespace, textureName = "particle/${textureResourceLocation.path}")

src/main/java/de/bixilon/minosoft/data/registries/registries/Registries.kt

@@ -14,6 +14,7 @@ package de.bixilon.minosoft.data.registries.registries
 
 import de.bixilon.kutil.cast.CastUtil.nullCast
 import de.bixilon.kutil.cast.CastUtil.unsafeCast
+import de.bixilon.kutil.json.JsonUtil.toJsonObject
 import de.bixilon.minosoft.data.entities.EntityMetaDataFields
 import de.bixilon.minosoft.data.entities.block.BlockEntityMetaType
 import de.bixilon.minosoft.data.entities.meta.EntityMetaData
@@ -48,7 +49,6 @@ import de.bixilon.minosoft.protocol.packets.c2s.play.EntityActionC2SP
 import de.bixilon.minosoft.protocol.packets.s2c.play.EntityAnimationS2CP
 import de.bixilon.minosoft.protocol.packets.s2c.play.title.TitleS2CF
 import de.bixilon.minosoft.util.collections.Clearable
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.compoundCast
 import java.lang.reflect.Field
 import java.lang.reflect.ParameterizedType
 
@@ -129,7 +129,7 @@ class Registries {
         isFlattened = version.flattened
         blockStateRegistry.flattened = isFlattened
         // pre init stuff
-        loadShapes(pixlyzerData["shapes"]?.compoundCast())
+        loadShapes(pixlyzerData["shapes"]?.toJsonObject())
 
         // enums
         loadEnumRegistry(version, pixlyzerData["equipment_slots"], equipmentSlotRegistry, DefaultRegistries.EQUIPMENT_SLOTS_REGISTRY)
@@ -149,30 +149,30 @@ class Registries {
         creativeModeTabRegistry.initialize(pixlyzerData["creative_inventory_tab"]?.unsafeCast(), this, CreativeModeTab)
 
         // id resource location stuff
-        containerTypeRegistry.rawInitialize(pixlyzerData["container_types"]?.compoundCast(), this, ContainerType, alternative = DefaultRegistries.CONTAINER_TYPE_REGISTRY.forVersion(version))
+        containerTypeRegistry.rawInitialize(pixlyzerData["container_types"]?.toJsonObject(), this, ContainerType, alternative = DefaultRegistries.CONTAINER_TYPE_REGISTRY.forVersion(version))
-        gameEventRegistry.rawInitialize(pixlyzerData["game_events"]?.compoundCast(), this, GameEvent, alternative = DefaultRegistries.GAME_EVENT_REGISTRY.forVersion(version))
+        gameEventRegistry.rawInitialize(pixlyzerData["game_events"]?.toJsonObject(), this, GameEvent, alternative = DefaultRegistries.GAME_EVENT_REGISTRY.forVersion(version))
 
 
-        entityTypeRegistry.rawInitialize(pixlyzerData["entities"]?.compoundCast(), this, EntityType)
+        entityTypeRegistry.rawInitialize(pixlyzerData["entities"]?.toJsonObject(), this, EntityType)
 
-        motiveRegistry.rawInitialize(pixlyzerData["motives"]?.compoundCast(), this, Motive, version.flattened)
+        motiveRegistry.rawInitialize(pixlyzerData["motives"]?.toJsonObject(), this, Motive, version.flattened)
-        soundEventRegistry.rawInitialize(pixlyzerData["sound_events"]?.compoundCast())
+        soundEventRegistry.rawInitialize(pixlyzerData["sound_events"]?.toJsonObject())
-        particleTypeRegistry.rawInitialize(pixlyzerData["particles"]?.compoundCast(), this, ParticleType)
+        particleTypeRegistry.rawInitialize(pixlyzerData["particles"]?.toJsonObject(), this, ParticleType)
-        materialRegistry.rawInitialize(pixlyzerData["materials"]?.compoundCast(), this, Material)
+        materialRegistry.rawInitialize(pixlyzerData["materials"]?.toJsonObject(), this, Material)
-        enchantmentRegistry.rawInitialize(pixlyzerData["enchantments"]?.compoundCast(), this, Enchantment)
+        enchantmentRegistry.rawInitialize(pixlyzerData["enchantments"]?.toJsonObject(), this, Enchantment)
-        statusEffectRegistry.rawInitialize(pixlyzerData["status_effects"]?.compoundCast(), this, StatusEffect)
+        statusEffectRegistry.rawInitialize(pixlyzerData["status_effects"]?.toJsonObject(), this, StatusEffect)
-        biomeRegistry.rawInitialize(pixlyzerData["biomes"]?.compoundCast(), this, Biome)
+        biomeRegistry.rawInitialize(pixlyzerData["biomes"]?.toJsonObject(), this, Biome)
-        dimensionRegistry.rawInitialize(pixlyzerData["dimensions"]?.compoundCast(), this, Dimension)
+        dimensionRegistry.rawInitialize(pixlyzerData["dimensions"]?.toJsonObject(), this, Dimension)
-        fluidRegistry.rawInitialize(pixlyzerData["fluids"]?.compoundCast(), this, Fluid)
+        fluidRegistry.rawInitialize(pixlyzerData["fluids"]?.toJsonObject(), this, Fluid)
-        blockRegistry.rawInitialize(pixlyzerData["blocks"]?.compoundCast(), this, Block, version.flattened, Registry.MetaTypes.BITS_4)
+        blockRegistry.rawInitialize(pixlyzerData["blocks"]?.toJsonObject(), this, Block, version.flattened, Registry.MetaTypes.BITS_4)
-        itemRegistry.rawInitialize(pixlyzerData["items"]?.compoundCast(), this, Item, version.flattened, Registry.MetaTypes.BITS_16)
+        itemRegistry.rawInitialize(pixlyzerData["items"]?.toJsonObject(), this, Item, version.flattened, Registry.MetaTypes.BITS_16)
 
-        blockEntityTypeRegistry.rawInitialize(pixlyzerData["block_entities"]?.compoundCast(), this, BlockEntityType)
+        blockEntityTypeRegistry.rawInitialize(pixlyzerData["block_entities"]?.toJsonObject(), this, BlockEntityType)
 
-        villagerProfessionRegistry.rawInitialize(pixlyzerData["villager_professions"]?.compoundCast(), this, VillagerProfession)
+        villagerProfessionRegistry.rawInitialize(pixlyzerData["villager_professions"]?.toJsonObject(), this, VillagerProfession)
 
 
-        blockEntityMetaDataTypeRegistry.rawInitialize(pixlyzerData["block_entity_meta_data_types"]?.compoundCast(), this, BlockEntityMetaType, alternative = DefaultRegistries.BLOCK_ENTITY_META_TYPE_REGISTRY.forVersion(version))
+        blockEntityMetaDataTypeRegistry.rawInitialize(pixlyzerData["block_entity_meta_data_types"]?.toJsonObject(), this, BlockEntityMetaType, alternative = DefaultRegistries.BLOCK_ENTITY_META_TYPE_REGISTRY.forVersion(version))
 
 
         // post init

src/main/java/de/bixilon/minosoft/data/registries/registries/RegistriesLoader.kt

@@ -1,5 +1,6 @@
 package de.bixilon.minosoft.data.registries.registries
 
+import de.bixilon.kutil.json.JsonUtil.toJsonObject
 import de.bixilon.kutil.string.StringUtil.format
 import de.bixilon.minosoft.assets.properties.version.AssetsVersionProperties
 import de.bixilon.minosoft.assets.util.FileAssetsUtil
@@ -7,7 +8,6 @@ import de.bixilon.minosoft.assets.util.FileUtil
 import de.bixilon.minosoft.assets.util.FileUtil.readMBFMap
 import de.bixilon.minosoft.config.profile.profiles.resources.ResourcesProfile
 import de.bixilon.minosoft.data.registries.versions.Version
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.compoundCast
 import java.io.ByteArrayInputStream
 import java.io.File
 
@@ -30,7 +30,7 @@ object RegistriesLoader {
         val file = File(path)
         if (file.exists()) {
             // ToDo: Verify
-            return FileUtil.readFile(file, false).readMBFMap().compoundCast() ?: throw IllegalStateException("Could not read pixlyzer data!")
+            return FileUtil.readFile(file, false).readMBFMap().toJsonObject() ?: throw IllegalStateException("Could not read pixlyzer data!")
         }
 
         val savedHash = FileAssetsUtil.downloadAndGetAsset(url.format(mapOf(
@@ -42,6 +42,6 @@ object RegistriesLoader {
             throw IllegalStateException("Data mismatch, expected $hash, got ${savedHash.first}")
         }
 
-        return ByteArrayInputStream(savedHash.second).readMBFMap().compoundCast() ?: throw IllegalStateException("Invalid pixlyzer data!")
+        return ByteArrayInputStream(savedHash.second).readMBFMap().toJsonObject() ?: throw IllegalStateException("Invalid pixlyzer data!")
     }
 }

src/main/java/de/bixilon/minosoft/data/registries/registries/registry/FakeEnumRegistry.kt

@@ -13,10 +13,10 @@
 
 package de.bixilon.minosoft.data.registries.registries.registry
 
+import de.bixilon.kutil.json.JsonUtil.asJsonObject
 import de.bixilon.kutil.primitive.IntUtil.toInt
 import de.bixilon.minosoft.data.registries.registries.Registries
 import de.bixilon.minosoft.util.collections.Clearable
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.asCompound
 
 class FakeEnumRegistry<T : RegistryFakeEnumerable>(
     override var parent: FakeEnumRegistry<T>? = null,
@@ -49,7 +49,7 @@ class FakeEnumRegistry<T : RegistryFakeEnumerable>(
             check(value is Map<*, *>)
             var itemId = id.toInt()
 
-            val item = deserializer.deserialize(registries, value.asCompound())
+            val item = deserializer.deserialize(registries, value.asJsonObject())
             value["id"]?.toInt()?.let { providedItemId ->
                 itemId = providedItemId
             }

src/main/java/de/bixilon/minosoft/data/registries/registries/registry/PerVersionRegistry.kt

@@ -13,8 +13,8 @@
 
 package de.bixilon.minosoft.data.registries.registries.registry
 
+import de.bixilon.kutil.json.JsonUtil.toJsonObject
 import de.bixilon.minosoft.data.registries.versions.Version
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.compoundCast
 import java.util.*
 
 class PerVersionRegistry<T : RegistryItem> {
@@ -36,7 +36,7 @@ class PerVersionRegistry<T : RegistryItem> {
 
         val versions: SortedMap<Int, Registry<T>> = sortedMapOf({ t, t2 -> t2 - t })
         for ((versionId, json) in data) {
-            versions[Integer.parseInt(versionId)] = Registry<T>().rawInitialize(json.compoundCast(), null, deserializer)
+            versions[Integer.parseInt(versionId)] = Registry<T>().rawInitialize(json.toJsonObject(), null, deserializer)
         }
         this.versions = versions.toMap()
     }

src/main/java/de/bixilon/minosoft/data/registries/registries/registry/Registry.kt

@@ -15,6 +15,7 @@ package de.bixilon.minosoft.data.registries.registries.registry
 
 import com.google.gson.JsonElement
 import com.google.gson.JsonPrimitive
+import de.bixilon.kutil.json.JsonUtil.asJsonObject
 import de.bixilon.kutil.primitive.IntUtil.toInt
 import de.bixilon.minosoft.data.registries.MultiResourceLocationAble
 import de.bixilon.minosoft.data.registries.ResourceLocation
@@ -22,7 +23,6 @@ import de.bixilon.minosoft.data.registries.ResourceLocationAble
 import de.bixilon.minosoft.data.registries.registries.Registries
 import de.bixilon.minosoft.util.KUtil.toResourceLocation
 import de.bixilon.minosoft.util.json.ResourceLocationJsonMap.toResourceLocationMap
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.asCompound
 
 open class Registry<T : RegistryItem>(
     override var parent: AbstractRegistry<T>? = null,
@@ -120,7 +120,7 @@ open class Registry<T : RegistryItem>(
 
         for ((resourceLocation, value) in data) {
             check(value is Map<*, *>)
-            val item = deserializer.deserialize(registries, resourceLocation, value.asCompound()) ?: continue
+            val item = deserializer.deserialize(registries, resourceLocation, value.asJsonObject()) ?: continue
             value["id"]?.toInt()?.let { id ->
                 var itemId = id
                 if (!flattened) {

src/main/java/de/bixilon/minosoft/data/text/BaseComponent.kt

@@ -15,6 +15,7 @@ package de.bixilon.minosoft.data.text
 
 import de.bixilon.kutil.cast.CastUtil.nullCast
 import de.bixilon.kutil.json.JsonUtil.toJsonList
+import de.bixilon.kutil.json.JsonUtil.toJsonObject
 import de.bixilon.kutil.primitive.BooleanUtil.toBoolean
 import de.bixilon.minosoft.data.language.Translator
 import de.bixilon.minosoft.data.text.ChatCode.Companion.toColor
@@ -23,7 +24,6 @@ import de.bixilon.minosoft.data.text.events.HoverEvent
 import de.bixilon.minosoft.protocol.protocol.ProtocolDefinition
 import de.bixilon.minosoft.util.KUtil.format
 import de.bixilon.minosoft.util.KUtil.toResourceLocation
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.compoundCast
 import de.bixilon.minosoft.util.nbt.tag.NBTUtil.get
 import javafx.collections.ObservableList
 import javafx.scene.Node
@@ -167,8 +167,8 @@ class BaseComponent : ChatComponent {
         formatting.addOrRemove(PreChatFormattingCodes.OBFUSCATED, json["obfuscated"]?.toBoolean())
         formatting.addOrRemove(PreChatFormattingCodes.SHADOWED, json["shadowed"]?.toBoolean())
 
-        val clickEvent = json["clickEvent", "click_event"]?.compoundCast()?.let { click -> ClickEvent(click, restrictedMode) }
+        val clickEvent = json["clickEvent", "click_event"]?.toJsonObject()?.let { click -> ClickEvent(click, restrictedMode) }
-        val hoverEvent = json["hoverEvent", "hover_event"]?.compoundCast()?.let { hover -> HoverEvent(hover) }
+        val hoverEvent = json["hoverEvent", "hover_event"]?.toJsonObject()?.let { hover -> HoverEvent(hover) }
 
         val textComponent = TextComponent(
             message = currentText,

src/main/java/de/bixilon/minosoft/data/text/events/data/EntityHoverData.kt

@@ -14,12 +14,12 @@ package de.bixilon.minosoft.data.text.events.data
 
 import de.bixilon.kutil.cast.CastUtil.nullCast
 import de.bixilon.kutil.cast.CastUtil.unsafeCast
+import de.bixilon.kutil.json.JsonUtil.asJsonObject
 import de.bixilon.kutil.uuid.UUIDUtil.toUUID
 import de.bixilon.minosoft.data.registries.ResourceLocation
 import de.bixilon.minosoft.data.text.ChatComponent
 import de.bixilon.minosoft.util.KUtil.toResourceLocation
 import de.bixilon.minosoft.util.json.Jackson
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.asCompound
 import java.util.*
 
 class EntityHoverData(
@@ -30,11 +30,11 @@ class EntityHoverData(
 
     companion object {
         fun deserialize(data: Any): EntityHoverData {
-            var json: Map<String, Any> = if (data is String) {
+            var json: Map<String, Any> = (if (data is String) {
                 Jackson.MAPPER.readValue(data, Jackson.JSON_MAP_TYPE)
             } else {
                 data
-            }.asCompound()
+            }).asJsonObject()
             json["text"]?.let {
                 // 1.14.3.... lol
                 json = Jackson.MAPPER.readValue(it.unsafeCast<String>(), Jackson.JSON_MAP_TYPE)

src/main/java/de/bixilon/minosoft/gui/rendering/gui/elements/items/ItemElement.kt

@@ -50,7 +50,7 @@ class ItemElement(
 
         var color = ChatColors.WHITE
         if (item.item is BlockItem) {
-            item.item.block?.defaultState?.material?.color?.let { color = it }
+            item.item.block.defaultState.material.color?.let { color = it }
         }
 
         val image = ColorElement(hudRenderer, _size, color)

src/main/java/de/bixilon/minosoft/gui/rendering/input/interaction/ItemPickInteractionHandler.kt

@@ -58,7 +58,7 @@ class ItemPickInteractionHandler(
 
         when (target) {
             is BlockTarget -> {
-                itemStack = ItemStack(target.blockState.block.item!!, connection, 1)
+                itemStack = ItemStack(target.blockState.block.item, connection, 1)
 
                 if (copyNBT) {
                     val blockEntity = connection.world.getBlockEntity(target.blockPosition)

src/main/java/de/bixilon/minosoft/gui/rendering/models/unbaked/GenericUnbakedModel.kt

@@ -14,10 +14,10 @@
 package de.bixilon.minosoft.gui.rendering.models.unbaked
 
 import de.bixilon.kutil.cast.CastUtil.unsafeCast
+import de.bixilon.kutil.json.JsonUtil.toJsonObject
 import de.bixilon.minosoft.gui.rendering.models.display.ModelDisplay
 import de.bixilon.minosoft.gui.rendering.models.display.ModelDisplayPositions
 import de.bixilon.minosoft.gui.rendering.models.unbaked.element.UnbakedElement
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.compoundCast
 import de.bixilon.minosoft.util.nbt.tag.NBTUtil.listCast
 
 abstract class GenericUnbakedModel(
@@ -31,7 +31,7 @@ abstract class GenericUnbakedModel(
     init {
         val display = parent?.display?.toMutableMap() ?: mutableMapOf()
 
-        json["display"]?.compoundCast()?.let {
+        json["display"]?.toJsonObject()?.let {
             for ((name, value) in it) {
                 display[ModelDisplayPositions[name]] = ModelDisplay(data = value.unsafeCast())
             }
@@ -45,7 +45,7 @@ abstract class GenericUnbakedModel(
     init {
         val textures = parent?.textures?.toMutableMap() ?: mutableMapOf()
 
-        json["textures"]?.compoundCast()?.let {
+        json["textures"]?.toJsonObject()?.let {
             for ((name, value) in it) {
                 textures[name] = value.toString()
             }

src/main/java/de/bixilon/minosoft/gui/rendering/models/unbaked/block/MultipartRootModel.kt

@@ -14,11 +14,12 @@
 package de.bixilon.minosoft.gui.rendering.models.unbaked.block
 
 import de.bixilon.kutil.cast.CastUtil.unsafeCast
+import de.bixilon.kutil.json.JsonObject
+import de.bixilon.kutil.json.JsonUtil.toJsonObject
 import de.bixilon.minosoft.data.registries.blocks.BlockState
 import de.bixilon.minosoft.data.registries.blocks.properties.BlockProperties
 import de.bixilon.minosoft.gui.rendering.models.ModelLoader
 import de.bixilon.minosoft.gui.rendering.models.unbaked.AbstractUnbakedBlockModel
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.compoundCast
 
 class MultipartRootModel(
     private val conditions: MutableMap<MutableSet<Map<BlockProperties, Set<Any>>>, MutableSet<AbstractUnbakedBlockModel>>,
@@ -71,7 +72,7 @@ class MultipartRootModel(
 
     companion object {
 
-        private fun getCondition(data: MutableMap<String, Any>): MutableMap<BlockProperties, Set<Any>> {
+        private fun getCondition(data: JsonObject): MutableMap<BlockProperties, Set<Any>> {
             val condition: MutableMap<BlockProperties, Set<Any>> = mutableMapOf()
             for ((propertyName, value) in data) {
                 var property: BlockProperties? = null
@@ -104,7 +105,7 @@ class MultipartRootModel(
                     apply += WeightedUnbakedBlockStateModel(modelLoader, applyData.unsafeCast())
                 }
 
-                modelData["when"]?.compoundCast()?.let {
+                modelData["when"]?.toJsonObject()?.let {
                     val or = it["OR"]
                     if (or is List<*>) {
                         for (orData in or) {

src/main/java/de/bixilon/minosoft/gui/rendering/models/unbaked/element/UnbakedElement.kt

@@ -14,11 +14,11 @@
 package de.bixilon.minosoft.gui.rendering.models.unbaked.element
 
 import de.bixilon.kutil.cast.CastUtil.unsafeCast
+import de.bixilon.kutil.json.JsonUtil.asJsonObject
+import de.bixilon.kutil.json.JsonUtil.toJsonObject
 import de.bixilon.kutil.primitive.BooleanUtil.toBoolean
 import de.bixilon.minosoft.data.direction.Directions
 import de.bixilon.minosoft.gui.rendering.util.vec.vec3.Vec3Util.toVec3
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.asCompound
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.compoundCast
 import glm_.vec3.Vec3
 
 data class UnbakedElement(
@@ -37,7 +37,7 @@ data class UnbakedElement(
             val from = data["from"].toVec3() / BLOCK_RESOLUTION
             val to = data["to"].toVec3() / BLOCK_RESOLUTION
 
-            data["faces"].asCompound().let {
+            data["faces"].asJsonObject().let {
                 for ((directionString, faceData) in it) {
                     val direction = Directions[directionString]
                     val (fallbackUVStart, fallbackUVEnd) = direction.getFallbackUV(from, to)
@@ -48,7 +48,7 @@ data class UnbakedElement(
             return UnbakedElement(
                 from = from,
                 to = to,
-                rotation = data["rotation"]?.compoundCast()?.let { return@let UnbakedElementRotation(data = it) },
+                rotation = data["rotation"]?.toJsonObject()?.let { return@let UnbakedElementRotation(data = it) },
                 shade = data["shade"]?.toBoolean() ?: true,
                 faces = faces,
             )

src/main/java/de/bixilon/minosoft/gui/rendering/sound/SoundManager.kt

@@ -1,12 +1,12 @@
 package de.bixilon.minosoft.gui.rendering.sound
 
+import de.bixilon.kutil.json.JsonUtil.asJsonObject
 import de.bixilon.minosoft.assets.util.FileUtil.readJsonObject
 import de.bixilon.minosoft.data.registries.ResourceLocation
 import de.bixilon.minosoft.gui.rendering.sound.sounds.Sound
 import de.bixilon.minosoft.gui.rendering.sound.sounds.SoundType
 import de.bixilon.minosoft.protocol.network.connection.play.PlayConnection
 import de.bixilon.minosoft.util.KUtil.toResourceLocation
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.asCompound
 import java.util.*
 
 class SoundManager(
@@ -21,7 +21,7 @@ class SoundManager(
 
         for ((name, data) in soundsIndex) {
             val resourceLocation = name.toResourceLocation()
-            sounds[resourceLocation] = SoundType(resourceLocation, data.asCompound())
+            sounds[resourceLocation] = SoundType(resourceLocation, data.asJsonObject())
         }
     }
 

src/main/java/de/bixilon/minosoft/protocol/packets/s2c/play/BlockEntityMetaDataS2CP.kt

@@ -12,6 +12,7 @@
  */
 package de.bixilon.minosoft.protocol.packets.s2c.play
 
+import de.bixilon.kutil.json.JsonUtil.asJsonObject
 import de.bixilon.minosoft.data.entities.block.DefaultBlockEntityMetaDataFactory
 import de.bixilon.minosoft.modding.event.events.BlockEntityMetaDataChangeEvent
 import de.bixilon.minosoft.protocol.network.connection.play.PlayConnection
@@ -22,7 +23,6 @@ import de.bixilon.minosoft.protocol.protocol.ProtocolVersions.V_21W37A
 import de.bixilon.minosoft.util.logging.Log
 import de.bixilon.minosoft.util.logging.LogLevels
 import de.bixilon.minosoft.util.logging.LogMessageType
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.asCompound
 import glm_.vec3.Vec3i
 
 class BlockEntityMetaDataS2CP(buffer: PlayInByteBuffer) : PlayS2CPacket() {
@@ -36,7 +36,7 @@ class BlockEntityMetaDataS2CP(buffer: PlayInByteBuffer) : PlayS2CPacket() {
     } else {
         buffer.connection.registries.blockEntityMetaDataTypeRegistry[buffer.readUnsignedByte()].resourceLocation
     }
-    val nbt = buffer.readNBT().asCompound()
+    val nbt = buffer.readNBT().asJsonObject()
 
     override fun handle(connection: PlayConnection) {
         connection.world.getBlockEntity(position)?.updateNBT(nbt) ?: let {

src/main/java/de/bixilon/minosoft/protocol/packets/s2c/play/ChunkDataS2CP.kt

@@ -12,6 +12,8 @@
  */
 package de.bixilon.minosoft.protocol.packets.s2c.play
 
+import de.bixilon.kutil.json.JsonUtil.asJsonObject
+import de.bixilon.kutil.json.JsonUtil.toJsonObject
 import de.bixilon.kutil.primitive.IntUtil.toInt
 import de.bixilon.minosoft.data.entities.block.BlockEntity
 import de.bixilon.minosoft.data.world.ChunkData
@@ -39,8 +41,6 @@ import de.bixilon.minosoft.util.chunk.ChunkUtil
 import de.bixilon.minosoft.util.logging.Log
 import de.bixilon.minosoft.util.logging.LogLevels
 import de.bixilon.minosoft.util.logging.LogMessageType
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.asCompound
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.compoundCast
 import glm_.vec2.Vec2i
 import glm_.vec3.Vec3i
 import java.util.*
@@ -88,7 +88,7 @@ class ChunkDataS2CP(buffer: PlayInByteBuffer) : PlayS2CPacket() {
                 else -> null
             }
             if (buffer.versionId >= V_18W44A) {
-                heightMap = buffer.readNBT()?.compoundCast()
+                heightMap = buffer.readNBT()?.toJsonObject()
             }
             if (!isFullChunk && buffer.versionId < V_21W37A) {
                 this.chunkData.biomeSource = SpatialBiomeArray(buffer.readBiomeArray())
@@ -118,7 +118,7 @@ class ChunkDataS2CP(buffer: PlayInByteBuffer) : PlayS2CPacket() {
                     val blockEntities: MutableMap<Vec3i, BlockEntity> = mutableMapOf()
                     val positionOffset = Vec3i.of(chunkPosition, dimension.lowestSection, Vec3i.EMPTY)
                     for (i in 0 until buffer.readVarInt()) {
-                        val nbt = buffer.readNBT().asCompound()
+                        val nbt = buffer.readNBT().asJsonObject()
                         val position = Vec3i(nbt["x"]?.toInt() ?: continue, nbt["y"]?.toInt() ?: continue, nbt["z"]?.toInt() ?: continue) - positionOffset
                         val resourceLocation = (nbt["id"]?.toResourceLocation() ?: continue).fix()
                         val type = buffer.connection.registries.blockEntityTypeRegistry[resourceLocation] ?: let {
@@ -138,7 +138,7 @@ class ChunkDataS2CP(buffer: PlayInByteBuffer) : PlayS2CPacket() {
                         val xz = buffer.readUnsignedByte()
                         val y = buffer.readShort()
                         val type = buffer.connection.registries.blockEntityTypeRegistry[buffer.readVarInt()]
-                        val nbt = buffer.readNBT()?.asCompound() ?: continue
+                        val nbt = buffer.readNBT()?.asJsonObject() ?: continue
                         val entity = type.build(buffer.connection)
                         entity.updateNBT(nbt)
                         blockEntities[Vec3i(xz shr 4, y, xz and 0x0F)] = entity

src/main/java/de/bixilon/minosoft/protocol/packets/s2c/play/JoinGameS2CP.kt

@@ -14,6 +14,8 @@ package de.bixilon.minosoft.protocol.packets.s2c.play
 
 import com.google.common.collect.HashBiMap
 import de.bixilon.kutil.cast.CastUtil.unsafeCast
+import de.bixilon.kutil.json.JsonUtil.asJsonObject
+import de.bixilon.kutil.json.JsonUtil.toJsonObject
 import de.bixilon.minosoft.data.Difficulties
 import de.bixilon.minosoft.data.abilities.Gamemodes
 import de.bixilon.minosoft.data.registries.DefaultRegistries
@@ -38,8 +40,6 @@ import de.bixilon.minosoft.util.BitByte
 import de.bixilon.minosoft.util.logging.Log
 import de.bixilon.minosoft.util.logging.LogLevels
 import de.bixilon.minosoft.util.logging.LogMessageType
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.asCompound
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.compoundCast
 import de.bixilon.minosoft.util.nbt.tag.NBTUtil.listCast
 
 class JoinGameS2CP(buffer: PlayInByteBuffer) : PlayS2CPacket() {
@@ -104,12 +104,12 @@ class JoinGameS2CP(buffer: PlayInByteBuffer) : PlayS2CPacket() {
             if (buffer.versionId < ProtocolVersions.V_20W21A) {
                 dimensionProperties = buffer.connection.registries.dimensionRegistry[buffer.readInt()].type
             } else {
-                val dimensionCodec = buffer.readNBT().asCompound()
+                val dimensionCodec = buffer.readNBT().asJsonObject()
                 dimensions = parseDimensionCodec(dimensionCodec, buffer.versionId)
                 dimensionProperties = if (buffer.versionId < ProtocolVersions.V_1_16_2_PRE3) {
                     dimensions[buffer.readResourceLocation()]!!.type
                 } else {
-                    DimensionProperties.deserialize(buffer.readNBT().asCompound())
+                    DimensionProperties.deserialize(buffer.readNBT().asJsonObject())
                 }
                 world = buffer.readResourceLocation()
             }
@@ -183,7 +183,7 @@ class JoinGameS2CP(buffer: PlayInByteBuffer) : PlayS2CPacket() {
         val listTag: MutableList<Map<*, *>> = if (versionId < ProtocolVersions.V_20W28A) {
             nbt["dimension"]?.listCast()
         } else {
-            nbt["minecraft:dimension_type"]?.compoundCast()?.get("value")?.listCast()
+            nbt["minecraft:dimension_type"]?.toJsonObject()?.get("value")?.listCast()
         }!!
         for (tag in listTag) {
             val dimensionResourceLocation = ResourceLocation(tag[if (versionId < ProtocolVersions.V_1_16_PRE3) {
@@ -192,9 +192,9 @@ class JoinGameS2CP(buffer: PlayInByteBuffer) : PlayS2CPacket() {
                 "name"
             }].unsafeCast())
             val dimensionPropertyTag = if (versionId < ProtocolVersions.V_1_16_PRE3 || versionId >= ProtocolVersions.V_1_16_2_PRE1) {
-                tag["element"].asCompound()
+                tag["element"].asJsonObject()
             } else {
-                tag.asCompound()
+                tag.asJsonObject()
             }
             dimensionMap[dimensionResourceLocation] = Dimension.deserialize(null, dimensionResourceLocation, dimensionPropertyTag)
         }

src/main/java/de/bixilon/minosoft/protocol/packets/s2c/play/NBTQueryResponseS2CP.kt

@@ -12,16 +12,16 @@
  */
 package de.bixilon.minosoft.protocol.packets.s2c.play
 
+import de.bixilon.kutil.json.JsonUtil.asJsonObject
 import de.bixilon.minosoft.protocol.packets.s2c.PlayS2CPacket
 import de.bixilon.minosoft.protocol.protocol.PlayInByteBuffer
 import de.bixilon.minosoft.util.logging.Log
 import de.bixilon.minosoft.util.logging.LogLevels
 import de.bixilon.minosoft.util.logging.LogMessageType
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.asCompound
 
 class NBTQueryResponseS2CP(buffer: PlayInByteBuffer) : PlayS2CPacket() {
     val transactionId: Int = buffer.readVarInt()
-    val nbt: Map<String, Any> = buffer.readNBT().asCompound()
+    val nbt: Map<String, Any> = buffer.readNBT().asJsonObject()
 
     override fun log(reducedLog: Boolean) {
         Log.log(LogMessageType.NETWORK_PACKETS_IN, level = LogLevels.VERBOSE) { "NBT query response (transactionId=$transactionId nbt=$nbt)" }

src/main/java/de/bixilon/minosoft/protocol/packets/s2c/play/RespawnS2CP.kt

@@ -12,6 +12,7 @@
  */
 package de.bixilon.minosoft.protocol.packets.s2c.play
 
+import de.bixilon.kutil.json.JsonUtil.asJsonObject
 import de.bixilon.minosoft.data.Difficulties
 import de.bixilon.minosoft.data.abilities.Gamemodes
 import de.bixilon.minosoft.data.registries.ResourceLocation
@@ -25,7 +26,6 @@ import de.bixilon.minosoft.protocol.protocol.ProtocolVersions
 import de.bixilon.minosoft.util.logging.Log
 import de.bixilon.minosoft.util.logging.LogLevels
 import de.bixilon.minosoft.util.logging.LogMessageType
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.asCompound
 import glm_.vec3.Vec3d
 
 class RespawnS2CP(buffer: PlayInByteBuffer) : PlayS2CPacket() {
@@ -60,7 +60,7 @@ class RespawnS2CP(buffer: PlayInByteBuffer) : PlayS2CPacket() {
                 buffer.connection.registries.dimensionRegistry[buffer.readResourceLocation()]!!.type
             }
             else -> {
-                DimensionProperties.deserialize(buffer.readNBT().asCompound()) // current dimension data
+                DimensionProperties.deserialize(buffer.readNBT().asJsonObject()) // current dimension data
             }
         }
         if (buffer.versionId < ProtocolVersions.V_19W11A) {

src/main/java/de/bixilon/minosoft/protocol/protocol/PlayInByteBuffer.kt

@@ -35,7 +35,7 @@ import de.bixilon.minosoft.protocol.protocol.ProtocolVersions.V_19W36A
 import de.bixilon.minosoft.protocol.protocol.ProtocolVersions.V_1_13_2_PRE1
 import de.bixilon.minosoft.protocol.protocol.ProtocolVersions.V_1_9_1_PRE1
 import de.bixilon.minosoft.protocol.protocol.ProtocolVersions.V_20W28A
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.compoundCast
+import de.bixilon.minosoft.util.nbt.tag.NBTUtil.toMutableJsonObject
 import glm_.vec3.Vec3i
 
 
@@ -121,7 +121,7 @@ class PlayInByteBuffer : InByteBuffer {
             if (!connection.version.flattened) {
                 metaData = readUnsignedShort()
             }
-            val nbt = readNBTTag(versionId < V_14W28B)?.compoundCast()
+            val nbt = readNBTTag(versionId < V_14W28B)?.toMutableJsonObject()
             return ItemStack(
                 item = connection.registries.itemRegistry[id shl 16 or metaData],
                 connection = connection,
@@ -136,7 +136,7 @@ class PlayInByteBuffer : InByteBuffer {
                 item = connection.registries.itemRegistry[readVarInt()],
                 connection = connection,
                 count = readUnsignedByte(),
-                nbt = readNBT()?.compoundCast() ?: mutableMapOf(),
+                nbt = readNBT()?.toMutableJsonObject() ?: mutableMapOf(),
             )
         }
     }

src/main/java/de/bixilon/minosoft/protocol/status/ServerStatus.kt

@@ -13,9 +13,9 @@
 
 package de.bixilon.minosoft.protocol.status
 
+import de.bixilon.kutil.json.JsonUtil.toJsonObject
 import de.bixilon.kutil.primitive.IntUtil.toInt
 import de.bixilon.minosoft.data.text.ChatComponent
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.compoundCast
 import java.util.*
 
 class ServerStatus(
@@ -38,11 +38,11 @@ class ServerStatus(
         private set
 
     init {
-        data["version"]?.compoundCast()?.let {
+        data["version"]?.toJsonObject()?.let {
             protocolId = it["protocol"]?.toInt()
             serverBrand = it["name"]?.toString()
         }
-        data["players"]?.compoundCast()?.let {
+        data["players"]?.toJsonObject()?.let {
             usedSlots = it["online"]?.toInt()
             slots = it["max"]?.toInt()
 

src/main/java/de/bixilon/minosoft/util/account/microsoft/MicrosoftOAuthUtils.kt

@@ -15,6 +15,7 @@ package de.bixilon.minosoft.util.account.microsoft
 
 import de.bixilon.kutil.cast.CastUtil.unsafeCast
 import de.bixilon.kutil.json.JsonUtil.asJsonList
+import de.bixilon.kutil.json.JsonUtil.asJsonObject
 import de.bixilon.kutil.primitive.LongUtil.toLong
 import de.bixilon.kutil.uuid.UUIDUtil.toUUID
 import de.bixilon.minosoft.data.accounts.types.MicrosoftAccount
@@ -27,7 +28,6 @@ import de.bixilon.minosoft.util.http.HTTP2.postJson
 import de.bixilon.minosoft.util.logging.Log
 import de.bixilon.minosoft.util.logging.LogLevels
 import de.bixilon.minosoft.util.logging.LogMessageType
-import de.bixilon.minosoft.util.nbt.tag.NBTUtil.asCompound
 import de.bixilon.minosoft.util.url.URLProtocolStreamHandlers
 import java.net.URL
 import java.net.URLConnection
@@ -92,7 +92,7 @@ object MicrosoftOAuthUtils {
         if (response.statusCode != 200) {
             throw LoginException(response.statusCode, "Could not authenticate with xbox live token", response.body.toString())
         }
-        return Pair(response.body["Token"].unsafeCast(), response.body["DisplayClaims"].asCompound()["xui"].asJsonList()[0].asCompound()["uhs"].unsafeCast())
+        return Pair(response.body["Token"].unsafeCast(), response.body["DisplayClaims"].asJsonObject()["xui"].asJsonList()[0].asJsonObject()["uhs"].unsafeCast())
     }
 
     fun getXSTSToken(xBoxLiveToken: String): String {

src/main/java/de/bixilon/minosoft/util/nbt/tag/NBTUtil.kt

@@ -14,6 +14,8 @@
 package de.bixilon.minosoft.util.nbt.tag
 
 import de.bixilon.kutil.cast.CastUtil.nullCast
+import de.bixilon.kutil.cast.CastUtil.unsafeCast
+import de.bixilon.kutil.json.MutableJsonObject
 
 object NBTUtil {
 
@@ -34,14 +36,17 @@ object NBTUtil {
         return null
     }
 
-    fun Any?.compoundCast(): MutableMap<String, Any>? {
+    @Deprecated("Will be in Kutil 1.4")
-        return this.nullCast()
+    fun Any?.asMutableJsonObject(): MutableJsonObject {
+        return this.unsafeCast()
     }
 
-    fun Any?.asCompound(): MutableMap<String, Any> {
+    @Deprecated("Will be in Kutil 1.4")
-        return this.compoundCast()!!
+    fun Any?.toMutableJsonObject(): MutableJsonObject? {
+        return this?.nullCast()
     }
 
+
     fun <T> Any?.listCast(): MutableList<T>? {
         try {
             return this as MutableList<T>