add block state endec

Author: BasiqueEvangelist

src/main/java/io/wispforest/owo/serialization/endec/MinecraftEndecs.java

@@ -10,6 +10,7 @@
 import net.fabricmc.fabric.api.event.registry.RegistryAttributeHolder;
 import net.fabricmc.fabric.api.networking.v1.PacketByteBufs;
 import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
 import net.minecraft.network.PacketByteBuf;
@@ -92,6 +93,11 @@ private MinecraftEndecs() {}
                     : BlockHitResult.createMissed(pos, side, blockPos)
     );
 
+    public static final Endec<BlockState> BLOCK_STATE = Endec.ifAttr(
+            MinecraftSerializationAttributes.NETWORK, Endec.VAR_INT.xmap(Block.STATE_IDS::get, Block.STATE_IDS::getRawId)
+        )
+        .orElse(CodecUtils.toEndec(BlockState.CODEC));
+
     // --- Constructors for MC types ---
 
     public static ReflectiveEndecBuilder addDefaults(ReflectiveEndecBuilder builder) {
@@ -113,6 +119,8 @@ public static ReflectiveEndecBuilder addDefaults(ReflectiveEndecBuilder builder)
         builder.register(ofRegistry(Registries.ITEM), Item.class)
                .register(ofRegistry(Registries.BLOCK), Block.class);
 
+        builder.register(BLOCK_STATE, BlockState.class);
+
         return builder;
     }
 

src/testmod/java/io/wispforest/uwu/network/DispatchedSubclassThree.java

@@ -1,9 +1,10 @@
 package io.wispforest.uwu.network;
 
 import net.minecraft.block.Block;
+import net.minecraft.block.BlockState;
 import net.minecraft.item.Item;
 
-public record DispatchedSubclassThree(Item item, Block block) implements DispatchedInterface {
+public record DispatchedSubclassThree(Item item, Block block, BlockState state) implements DispatchedInterface {
     @Override
     public String getName() {
         return "three";

src/testmod/java/io/wispforest/uwu/network/UwuNetworkExample.java

@@ -9,10 +9,12 @@
 import net.fabricmc.fabric.api.client.event.lifecycle.v1.ClientTickEvents;
 import net.fabricmc.fabric.api.client.keybinding.v1.KeyBindingHelper;
 import net.minecraft.block.Blocks;
+import net.minecraft.block.HorizontalFacingBlock;
 import net.minecraft.client.option.KeyBinding;
 import net.minecraft.item.Items;
 import net.minecraft.text.Text;
 import net.minecraft.util.Identifier;
+import net.minecraft.util.math.Direction;
 import org.lwjgl.glfw.GLFW;
 
 import java.util.HashMap;
@@ -69,7 +71,11 @@ public static void init() {
 
                     CHANNEL.clientHandle().send(new MaldingPacket(new DispatchedSubclassOne("base")));
                     CHANNEL.clientHandle().send(new MaldingPacket(new DispatchedSubclassTwo(20)));
-                    CHANNEL.clientHandle().send(new MaldingPacket(new DispatchedSubclassThree(Items.ACACIA_BOAT, Blocks.DRAGON_EGG)));
+                    CHANNEL.clientHandle().send(new MaldingPacket(new DispatchedSubclassThree(
+                        Items.ACACIA_BOAT,
+                        Blocks.DRAGON_EGG,
+                        Blocks.OAK_STAIRS.getDefaultState().with(HorizontalFacingBlock.FACING, Direction.EAST)
+                    )));
 
                     CHANNEL.clientHandle().send(new NullablePacket(null, null));
                     CHANNEL.clientHandle().send(new NullablePacket("Weeee", null));