Chunk packet. Counting players and kicking if too many

src/main/java/ru/nanit/limbo/protocol/ByteMessage.java

@@ -120,6 +120,27 @@ public class ByteMessage extends ByteBuf {
         }
     }
 
+    public void writeVarIntArray(int[] array) {
+        writeVarInt(array.length);
+        for (int i : array) {
+            writeVarInt(i);
+        }
+    }
+
+    public void writeCompoundTagArray(CompoundBinaryTag[] compoundTags) {
+        try {
+            ByteBufOutputStream stream = new ByteBufOutputStream(buf);
+
+            writeVarInt(compoundTags.length);
+
+            for (CompoundBinaryTag tag : compoundTags){
+                BinaryTagIO.writeDataOutput(tag, stream);
+            }
+        } catch (IOException e) {
+            throw new EncoderException("Cannot write NBT CompoundTag");
+        }
+    }
+
     public CompoundBinaryTag readCompoundTag() {
         try {
             return BinaryTagIO.readDataInput(new ByteBufInputStream(buf));

src/main/java/ru/nanit/limbo/protocol/packets/play/PacketChunkData.java

@@ -0,0 +1,69 @@
+package ru.nanit.limbo.protocol.packets.play;
+
+import net.kyori.adventure.nbt.CompoundBinaryTag;
+import ru.nanit.limbo.protocol.ByteMessage;
+import ru.nanit.limbo.protocol.PacketOut;
+import ru.nanit.limbo.protocol.registry.Version;
+
+public class PacketChunkData implements PacketOut {
+
+    private int chunkX;
+    private int chunkZ;
+    private boolean fullChunk;
+    private int primaryBitMask;
+    private CompoundBinaryTag heightMaps;
+    private int[] biomes;
+    private byte[] data;
+    private CompoundBinaryTag[] blockEntities;
+
+    public void setChunkX(int chunkX) {
+        this.chunkX = chunkX;
+    }
+
+    public void setChunkZ(int chunkZ) {
+        this.chunkZ = chunkZ;
+    }
+
+    public void setFullChunk(boolean fullChunk) {
+        this.fullChunk = fullChunk;
+    }
+
+    public void setPrimaryBitMask(int primaryBitMask) {
+        this.primaryBitMask = primaryBitMask;
+    }
+
+    public void setHeightMaps(CompoundBinaryTag heightMaps) {
+        this.heightMaps = heightMaps;
+    }
+
+    public void setBiomes(int[] biomes) {
+        this.biomes = biomes;
+    }
+
+    public void setData(byte[] data) {
+        this.data = data;
+    }
+
+    public void setBlockEntities(CompoundBinaryTag[] blockEntities) {
+        this.blockEntities = blockEntities;
+    }
+
+    @Override
+    public void encode(ByteMessage msg, Version version) {
+        msg.writeInt(chunkX);
+        msg.writeInt(chunkZ);
+        msg.writeBoolean(fullChunk);
+        msg.writeVarInt(primaryBitMask);
+        msg.writeCompoundTag(heightMaps);
+
+        if (fullChunk){
+            msg.writeVarIntArray(biomes);
+        }
+
+
+
+        msg.writeBytesArray(data);
+        msg.writeCompoundTagArray(blockEntities);
+    }
+
+}

src/main/java/ru/nanit/limbo/protocol/packets/play/PacketKeepAlive.java

@@ -0,0 +1,29 @@
+package ru.nanit.limbo.protocol.packets.play;
+
+import ru.nanit.limbo.protocol.ByteMessage;
+import ru.nanit.limbo.protocol.Packet;
+import ru.nanit.limbo.protocol.registry.Version;
+
+public class PacketKeepAlive implements Packet {
+
+    private long id;
+
+    public long getId() {
+        return id;
+    }
+
+    public void setId(long id) {
+        this.id = id;
+    }
+
+    @Override
+    public void encode(ByteMessage msg, Version version) {
+        msg.writeLong(id);
+    }
+
+    @Override
+    public void decode(ByteMessage msg, Version version) {
+        this.id = msg.readLong();
+    }
+
+}

src/main/java/ru/nanit/limbo/protocol/packets/play/PacketPlayerPositionAndLook.java

@@ -11,7 +11,7 @@ public class PacketPlayerPositionAndLook implements PacketOut {
     private double z;
     private float yaw;
     private float pitch;
-    private byte flags = 0x01;
+    private byte flags = 0x08;
     private int teleportId;
 
     public void setX(double x) {

src/main/java/ru/nanit/limbo/protocol/registry/State.java

@@ -3,9 +3,7 @@ package ru.nanit.limbo.protocol.registry;
 import ru.nanit.limbo.protocol.Packet;
 import ru.nanit.limbo.protocol.packets.*;
 import ru.nanit.limbo.protocol.packets.login.*;
-import ru.nanit.limbo.protocol.packets.play.PacketJoinGame;
-import ru.nanit.limbo.protocol.packets.play.PacketPlayerPositionAndLook;
-import ru.nanit.limbo.protocol.packets.play.PacketUpdateViewPos;
+import ru.nanit.limbo.protocol.packets.play.*;
 import ru.nanit.limbo.protocol.packets.status.PacketStatusPing;
 import ru.nanit.limbo.protocol.packets.status.PacketStatusRequest;
 import ru.nanit.limbo.protocol.packets.status.PacketStatusResponse;
@@ -38,9 +36,12 @@ public enum State {
     },
     PLAY(3){
         {
+            clientBound.register(Version.V1_16_4, 0x20, PacketChunkData::new);
             clientBound.register(Version.V1_16_4, 0x24, PacketJoinGame::new);
             clientBound.register(Version.V1_16_4, 0x34, PacketPlayerPositionAndLook::new);
             clientBound.register(Version.V1_16_4, 0x40, PacketUpdateViewPos::new);
+            clientBound.register(Version.V1_16_4, 0x1F, PacketKeepAlive::new);
+            serverBound.register(Version.V1_16_4, 0x1F, PacketKeepAlive::new);
         }
     };