private void HandleHandshake(Client client, HandshakeRequestPacket packet)
{
if (client.LoggedIn)
return;
client.Stream.WritePacket(new HandshakeResponsePacket("-"));
Logger.Debug("New user '" + packet.Username + "' is connecting...");
}
public void HandlePacket(Packet packet, Client client)
{
if (!Server.Running || packet == null)
return;
try
{
switch (packet.Type)
{
case PacketType.KeepAlive:
HandleKeepAlive(client, (KeepAlivePacket)packet);
break;
case PacketType.Handshake:
HandleHandshake(client, (HandshakeRequestPacket)packet);
break;
case PacketType.Login:
HandleLogin(client, (LoginRequestPacket)packet);
break;
case PacketType.PlayerPosition:
HandlePlayerPosition(client, (PlayerPositionPacket)packet);
break;
case PacketType.PlayerPositionLook:
HandlePlayerPositionLook(client, (PlayerPositionLookPacket)packet);
break;
case PacketType.ChatMessage:
HandleChatMessage(client, (ChatMessagePacket)packet);
break;
case PacketType.PlayerDigging:
HandlePlayerDigging(client, (PlayerDiggingPacket)packet);
break;
case PacketType.PlayerBlockPlacement:
HandlePlayerBlockPlacement(client, (PlayerBlockPlacementPacket)packet);
break;
case PacketType.Disconnect:
HandleDisconnect(client, (DisconnectPacket)packet);
break;
default:
Logger.Debug("Unhandled packet (" + packet.Type + ")");
break;
}
}
catch (Exception e)
{
Logger.Warn(e);
}
}
private void HandleLogin(Client client, LoginRequestPacket packet)
{
if (client.LoggedIn)
return;
client.Player.EntityID = Server.TotalEntityCount++;
client.Stream.WritePacket(new LoginResponsePacket(client.Player.EntityID, Server.ServerName,
Server.MapSeed, Server.GameMode, (byte)(Server.IsNether ? -1 : 0), (byte)Server.Difficulty, (byte)128, (byte)Server.MaxPlayers));
client.Player.Username = packet.Username;
client.LoggedIn = true;
client.SendInitialChunks();
client.SendInitialPosition();
client.SendInitialInventory();
Server.BroadcastPacket(new ChatMessagePacket("", ChatColor.Yellow + packet.Username + " joined the game."));
foreach (Client c in Server.GetClients())
{
if(!c.Equals(client))
client.Stream.WritePacket(new NamedEntitySpawnPacket(c.Player.EntityID, c.Player.Username,
(int)c.Player.Location.X, (int)c.Player.Location.Y, (int)c.Player.Location.Z, 0, 0, 0));
}
Logger.Info("'" + packet.Username + "' joined the game. [Entity ID = " + client.Player.EntityID + "]");
}
private void HandleKeepAlive(Client client, KeepAlivePacket packet)
{
// TODO: Check sent value against received value
}
private void HandleDisconnect(Client client, DisconnectPacket packet)
{
if (client.LoggedIn && client.Player.Username.Length > 0)
{
Server.BroadcastPacket(new ChatMessagePacket("", ChatColor.Yellow + client.Player.Username + " left the game."));
Server.BroadcastPacket(new DestroyEntityPacket(client.Player.EntityID));
Logger.Info(client.Player.Username + " left the game. (" + packet.Reason + ")");
}
client.Dispose();
}
private void HandlePlayerBlockPlacement(Client client, PlayerBlockPlacementPacket packet)
{
// TODO: Check if player is close enough to place the block; check if player is placing on top of another block, etc.
if (packet.Amount >= 0 && packet.BlockID > 0 && packet.BlockID <= 121)
{
int placeX = packet.X;
int placeY = packet.Y;
int placeZ = packet.Z;
switch (packet.Direction)
{
case 0:
placeY--;
break;
case 1:
placeY++;
break;
case 2:
placeZ--;
break;
case 3:
placeZ++;
break;
case 4:
placeX--;
break;
case 5:
placeX++;
break;
}
WorldLocation bLoc = new WorldLocation(placeX, placeY, placeZ);
Nullable<Block> nb = Server.GetWorldManager().GetWorld(0).GetBlock(bLoc);
if (nb != null)
{
Block b = (Block)nb;
b.SetBlockType((BlockType)packet.BlockID);
Server.OnBlockChange(b);
}
}
}
private void HandlePlayerDigging(Client client, PlayerDiggingPacket packet)
{
if (!client.LoggedIn)
client.Dispose();
// TODO: Check if player is close enough to break the block; implement Start Digging and Drop statuses
if (packet.DigStatus == 2 || Server.GameMode == 1) // Finished Digging
{
Nullable<Block> nb = Server.GetWorldManager().GetWorld(0).GetBlock(new WorldLocation(packet.DigX, (int)packet.DigY, packet.DigZ));
if (nb != null)
{
Block b = (Block)nb;
if (Location.Distance(new Location(b.Location.X, b.Location.Y, b.Location.Z), client.Player.Location) > 5)
return;
ItemEntity dropEntity = new ItemEntity(Server.TotalEntityCount++, b.GetBlockType());
dropEntity.Location = new Location(b.Location.X, b.Location.Y, b.Location.Z);
Server.GetWorldManager().GetWorld(0).AddEntity(dropEntity);
Server.BroadcastPacket(new PickupSpawnPacket(dropEntity.EntityID, (short)dropEntity.Type, 1, 0,
(int)dropEntity.Location.X, (int)dropEntity.Location.Y, (int)dropEntity.Location.Z, 0, 0, 0));
b.SetBlockType(BlockType.Air);
Server.BroadcastPacket(new EntityPacket(dropEntity.EntityID));
Server.OnBlockChange(b);
}
}
}
private void HandleChatMessage(Client client, ChatMessagePacket packet)
{
// TODO: Commands, spam filter, etc.
packet.Username = client.Player.Username;
Server.BroadcastPacket(packet);
Logger.Chat(String.Format("<{0}> {1}", packet.Username, packet.Message));
}
private void HandlePlayerPositionLook(Client client, PlayerPositionLookPacket packet)
{
// TODO: See above
// Update player position & look
Location newLoc = new Location(packet.X, packet.Y, packet.Z);
// if (Location.Distance(client.Player.Location, newLoc) > 15 && client.Spawned)
// client.Dispose();
byte xOff, yOff, zOff;
xOff = (byte)(-1 * Math.Min((int)(client.Player.Location.X - newLoc.X) * 32, 128));
yOff = (byte)(-1 * Math.Min((int)(client.Player.Location.Y - newLoc.Y) * 32, 128));
zOff = (byte)(-1 * Math.Min((int)(client.Player.Location.Z - newLoc.Z) * 32, 128));
// TODO: Pitch & Yaw
Server.BroadcastPacket(new EntityLookRelativeMovePacket(client.Player.EntityID, xOff, yOff, zOff, 0, 0), client);
client.Player.Location = newLoc;
client.Player.Yaw = packet.Yaw;
client.Player.Pitch = packet.Pitch;
if (!client.Spawned)
{
client.Spawned = true;
Server.BroadcastPacket(new NamedEntitySpawnPacket(client.Player.EntityID, client.Player.Username,
(int)client.Player.Location.X, (int)client.Player.Location.Y, (int)client.Player.Location.Z, 0, 0, 0), client);
}
}
private void HandlePlayerPosition(Client client, PlayerPositionPacket packet)
{
// TODO: Check for speed/fly hacks, going through walls, etc.
// Update player position
Location newLoc = new Location(packet.X, packet.Y, packet.Z);
byte xOff, yOff, zOff;
xOff = (byte)(-1 * Math.Min((int)(client.Player.Location.X - newLoc.X) * 32, 128));
yOff = (byte)(-1 * Math.Min((int)(client.Player.Location.Y - newLoc.Y) * 32, 128));
zOff = (byte)(-1 * Math.Min((int)(client.Player.Location.Z - newLoc.Z) * 32, 128));
Server.BroadcastPacket(new EntityLookRelativeMovePacket(client.Player.EntityID, xOff, yOff, zOff, 0, 0), client);
client.Player.Location = new Location(packet.X, packet.Y, packet.Z);
}
