/// <summary>
/// Creates a new <see cref="HandshakePacket"/> instance.
/// </summary>
/// <param name="packet">Incoming packet from client.</param>
public HandshakePacket(IMinecraftPacket packet)
{
ProtocolVersion = packet.ReadVarInt32();
ServerAddress = packet.ReadString();
ServerPort = packet.ReadUInt16();
NextState = (MinecraftUserStatus)packet.ReadVarInt32();
}
public void OnPlayerDigging(IMinecraftUser user, IMinecraftPacket packet)
{
var status = (DiggingType)packet.ReadVarInt32();
var position = packet.ReadPosition();
var face = (BlockFaceType)packet.ReadByte();
_logger.LogTrace($"Status={status};Position={position};Face={face}");
if (user.Player.GameMode is ServerGameModeType.Creative)
{
IBlock previousBlock = user.Player.Map.GetBlock(position);
if (previousBlock.IsAir)
{
throw new InvalidOperationException($"Cannot dig air blocks ({position})");
}
using var playerDiggingAck = new AcknowledgePlayerDiggingPacket(position, previousBlock, DiggingType.Started);
user.Player.SendPacketToVisibleEntities(playerDiggingAck);
using var blockChange = new BlockChangePacket(BlockType.Air, position);
user.Player.SendPacketToVisibleEntities(blockChange);
IBlock block = user.Player.Map.SetBlock(BlockType.Air, position);
using var chunkPacket = new ChunkDataPacket(block.Chunk);
user.Player.SendPacketToVisibleEntities(chunkPacket, includeEntity: true);
}
else
{
// TODO: other modes
}
}
public void OnPlayerBlockPlacement(IMinecraftUser user, IMinecraftPacket packet)
{
var handType = (HandType)packet.ReadVarInt32();
Position blockPosition = packet.ReadPosition();
var blockFace = (BlockFaceType)packet.ReadVarInt32();
float cursorX = packet.ReadSingle();
float cursorY = packet.ReadSingle();
float cursorZ = packet.ReadSingle();
bool isInsideBlock = packet.ReadBoolean();
// TODO: check if the current player is interacting with an interactable object.
// Like: Chest, anvil, crafting table.
IItemSlot currentHeldItem = user.Player.HotBar.SelectedSlot;
if (currentHeldItem.HasItem)
{
BlockData block = _registry.Blocks.FirstOrDefault(x => x.ItemId == currentHeldItem.ItemId);
BlockType blockToPlace = block.Type;
if (blockToPlace is not BlockType.Air)
{
Position realBlockPosition = blockFace switch
{
BlockFaceType.Bottom => new Position(blockPosition.X, blockPosition.Y - 1, blockPosition.Z),
BlockFaceType.Top => new Position(blockPosition.X, blockPosition.Y + 1, blockPosition.Z),
BlockFaceType.North => new Position(blockPosition.X, blockPosition.Y, blockPosition.Z - 1),
BlockFaceType.South => new Position(blockPosition.X, blockPosition.Y, blockPosition.Z + 1),
BlockFaceType.West => new Position(blockPosition.X - 1, blockPosition.Y, blockPosition.Z),
BlockFaceType.East => new Position(blockPosition.X + 1, blockPosition.Y, blockPosition.Z),
_ => throw new InvalidOperationException("Invalid block face type.")
};
_logger.LogDebug($"Placing block '{blockToPlace}' at position {realBlockPosition}");
user.Player.Map.SetBlock(blockToPlace, (int)realBlockPosition.X, (int)realBlockPosition.Y, (int)realBlockPosition.Z);
using var blockChangePacket = new BlockChangePacket(blockToPlace, blockPosition);
user.Player.SendPacketToVisibleEntities(blockChangePacket);
using var chunkDataPacket = new ChunkDataPacket(user.Player.Chunk);
user.Player.SendPacketToVisibleEntities(chunkDataPacket);
}
}
}
}
public void OnCreativeInventoryAction(IMinecraftUser user, IMinecraftPacket packet)
{
short slot = (short)(packet.ReadInt16() - RedstoneContants.PlayerInventoryHotbarOffset);
// item slot structure
bool present = packet.ReadBoolean();
if (present)
{
int itemId = packet.ReadVarInt32();
byte itemCount = packet.ReadByte();
NbtCompound itemExtras = packet.ReadNbtCompound();
_logger.LogInformation($"Item with id: {itemId} (x{itemCount}) set at slot {slot}");
user.Player.HotBar.SetItem(slot, itemId, itemCount);
}
else
{
_logger.LogInformation($"Clearing item slot '{slot}'");
user.Player.HotBar.ClearItem(slot);
}
}
public void OnAnimation(IMinecraftUser user, IMinecraftPacket packet)
{
var hand = (HandType)packet.ReadVarInt32();
user.Player.SwingHand(hand);
}
public void OnTeleportConfirm(MinecraftUser user, IMinecraftPacket packet)
{
int teleportId = packet.ReadVarInt32();
_logger.LogInformation($"Teleport ID: {teleportId}");
}