Add 1.20.2 support (#74)

* 1.20.2 support

* Change version to 1.1.13-SNAPSHOT

---------

Co-authored-by: jnngl <jnngles@gmail.com>

Author: UserNugget

build.gradle

@@ -9,7 +9,7 @@ plugins {
 }
 
 setGroup("net.elytrium")
-setVersion("1.1.12")
+setVersion("1.1.13-SNAPSHOT")
 
 compileJava {
     getOptions().setEncoding("UTF-8")

src/main/java/net/elytrium/limbofilter/LimboFilter.java

@@ -277,6 +277,7 @@ public void reload() {
             new PacketMapping(0x10, ProtocolVersion.MINECRAFT_1_19_1, false),
             new PacketMapping(0x0F, ProtocolVersion.MINECRAFT_1_19_3, false),
             new PacketMapping(0x10, ProtocolVersion.MINECRAFT_1_19_4, false),
+            new PacketMapping(0x12, ProtocolVersion.MINECRAFT_1_20_2, false),
         })
         .registerPacket(PacketDirection.CLIENTBOUND, SetEntityMetadata.class, SetEntityMetadata::new, new PacketMapping[]{
             new PacketMapping(0x1C, ProtocolVersion.MINIMUM_VERSION, true),
@@ -290,6 +291,7 @@ public void reload() {
             new PacketMapping(0x50, ProtocolVersion.MINECRAFT_1_19_1, true),
             new PacketMapping(0x4E, ProtocolVersion.MINECRAFT_1_19_3, true),
             new PacketMapping(0x52, ProtocolVersion.MINECRAFT_1_19_4, true),
+            new PacketMapping(0x54, ProtocolVersion.MINECRAFT_1_20_2, true),
         })
         .registerPacket(PacketDirection.CLIENTBOUND, SpawnEntity.class, SpawnEntity::new, new PacketMapping[]{
             new PacketMapping(0x0E, ProtocolVersion.MINIMUM_VERSION, true),

src/main/java/net/elytrium/limbofilter/protocol/data/EntityMetadata.java

@@ -20,8 +20,11 @@
 import com.velocitypowered.api.network.ProtocolVersion;
 import com.velocitypowered.proxy.protocol.ProtocolUtils;
 import io.netty.buffer.ByteBuf;
+import io.netty.buffer.ByteBufOutputStream;
+import io.netty.handler.codec.EncoderException;
 import java.util.Map;
 import net.elytrium.limboapi.api.material.VirtualItem;
+import net.kyori.adventure.nbt.BinaryTagTypes;
 import net.kyori.adventure.nbt.CompoundBinaryTag;
 
 public class EntityMetadata {
@@ -85,7 +88,17 @@ public void encode(ByteBuf buf, ProtocolVersion protocolVersion) {
             buf.writeByte(0);
           }
         } else {
-          ProtocolUtils.writeCompoundTag(buf, this.nbt);
+          if (protocolVersion.compareTo(ProtocolVersion.MINECRAFT_1_20_2) < 0) {
+            ProtocolUtils.writeCompoundTag(buf, this.nbt);
+          } else {
+            // TODO: remove then the ProtocolUtils::writeCompoundTag will support 1.20.2
+            try (ByteBufOutputStream output = new ByteBufOutputStream(buf)) {
+              output.writeByte(BinaryTagTypes.COMPOUND.id());
+              BinaryTagTypes.COMPOUND.write(this.nbt, output);
+            } catch (Throwable throwable) {
+              throw new EncoderException("Unable to encode NBT CompoundTag");
+            }
+          }
         }
       }
     }