Some API additions

[Rubenicos]

Packet listening

Unified packet event class

Now PacketReceiveEvent and PacketSendEvent extends a common AbstractPacketEvent class with the new method AbstractPacketListener#packetEvent(), this is useful if you want to detect a packet that can be generated by the server and proxy.

Functional listeners

Instead of making this:

private MyPacketListener listener;

public void register() {
  listener = new MyPacketListener();
  Protocolize.listenerProvider().registerListener(listener);
}

public void unregister() {
  Protocolize.listenerProvider().unregisterListener(listener);
}

public class MyPacketListener extends AbstractPacketListener<Packet> {  
 
  public MyPacketListener() {  
    super(Packet.class, Direction.DOWNSTREAM, 0);  
  }  
 
  @Override  
  public void packetReceive(PacketReceiveEvent<Packet> event) {  
    // do something
    }  
  }  
}

Now you can make this:

private AbstractPacketListener<Packet> listener;

public void register() {
  listener = Protocolize.listenerProvider().register(Packet.class, Direction.DOWNSTREAM).onReceive(event -> {
    // do something
  });
}

public void unregister() {
  Protocolize.listenerProvider().unregister(listener);
}

Protocolize player

Packet sending

Now ProtocolizePlayer instance can be used to send packets with different protocols, since CONFIGURATION protocol was added this is quite useful.

ProtocolizePlayer player;
Object packet;
player.sendPacket(packet);
player.sendPacket(packet, Protocol.CONFIGURATION);

Protocol information

Get current player protocol from MinecraftDecoder and MinecraftEncoder.

ProtocolizePlayer player;
Protocol decoderProtocol = player.decoderProtocol();
Protocol encoderProtocol = player.encoderProtocol();

[Exceptionflug]

Hey, sorry for the late response. I did take a look at this PR and I found it quite useful. But I would like you to check a few things before this can get merged. At first I want you to ensure that there are no API breaking changes here and everything is still binary compatible with already compiled code from an earlier api version.

[Reddishye]

yo @Exceptionflug, are there any news about this PR?