backport 2.0.8 to 1.16

build.gradle.kts

@@ -1,7 +1,7 @@
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
-java.sourceCompatibility = JavaVersion.VERSION_21
-java.targetCompatibility = JavaVersion.VERSION_21
+java.sourceCompatibility = JavaVersion.VERSION_1_8
+java.targetCompatibility = JavaVersion.VERSION_1_8
 
 plugins {
 	id("fabric-loom")
@@ -31,7 +31,7 @@ tasks.named<Copy>("processResources") {
 }
 
 tasks.withType<KotlinCompile> {
-	kotlinOptions.jvmTarget = "21"
+	kotlinOptions.jvmTarget = "1.8"
 }
 
 tasks.withType<Jar> {

gradle.properties

@@ -2,12 +2,12 @@ kotlin.code.style=official
 org.gradle.jvmargs=-Xmx1G
 
 # Project
-version=2.0.8
+version=2.0.8+1.16
 
 # Versions (https://fabricmc.net/develop)
-minecraft=1.20.6
-yarn=1.20.6+build.1
+minecraft=1.16.5
+yarn=1.16.5+build.10
 loader=0.15.11
 
-fabric_api=0.98.0+1.20.6
+fabric_api=0.42.0+1.16
 fabric_kotlin=1.10.20+kotlin.1.9.24

src/main/kotlin/dev/auxves/disco/Disc.kt

@@ -1,19 +1,22 @@
 package dev.auxves.disco
 
 import net.minecraft.item.Item
+import net.minecraft.item.ItemGroup
 import net.minecraft.item.ItemStack
 import net.minecraft.item.MusicDiscItem
 import net.minecraft.sound.SoundEvent
 import net.minecraft.text.Text
+import net.minecraft.text.TranslatableText
 import net.minecraft.util.Identifier
 import net.minecraft.util.Rarity
 
 private val settings = Item.Settings()
 	.rarity(Rarity.RARE)
+	.group(ItemGroup.TOOLS)
 	.maxCount(1)
 
-class Disc(val id: Identifier, duration: Int) : MusicDiscItem(15, SoundEvent.of(id), settings, duration) {
+class Disc(val id: Identifier, duration: Int) : MusicDiscItem(15, SoundEvent(id), settings) {
 	override fun getName(stack: ItemStack?): Text {
-		return Text.translatable("item.minecraft.music_disc_cat")
+		return TranslatableText("item.minecraft.music_disc_cat")
 	}
 }

src/main/kotlin/dev/auxves/disco/Entrypoint.kt

@@ -1,10 +1,7 @@
 package dev.auxves.disco
 
-import net.fabricmc.fabric.api.itemgroup.v1.ItemGroupEvents
 import net.fabricmc.loader.api.FabricLoader
-import net.minecraft.item.ItemGroups
-import net.minecraft.registry.Registries
-import net.minecraft.registry.Registry
+import net.minecraft.util.registry.Registry
 
 fun init() {
 	val addons = FabricLoader.getInstance().allMods
@@ -14,10 +11,6 @@ fun init() {
 	val discs = addons.flatMap { it.discs }
 
 	discs.forEach {
-		Registry.register(Registries.ITEM, it.id, it)
-	}
-
-	ItemGroupEvents.modifyEntriesEvent(ItemGroups.TOOLS).register { entries ->
-		discs.forEach(entries::add)
+		Registry.register(Registry.ITEM, it.id, it)
 	}
 }

src/main/resources/fabric.mod.json

@@ -17,8 +17,8 @@
 	},
 	"mixins": [],
 	"depends": {
-		"minecraft": ">=1.20",
-		"fabric-api": "*",
+		"minecraft": "1.16.x",
+		"fabric": "*",
 		"fabric-language-kotlin": "*"
 	}
 }