Need Help For Developing Java Network RPG

Question

Greetings,
Did anyone develop any similar game?I'm developing one for my final year project and i need some guidelines on that.
Thanks for your help in advanced.
Cheers,
yc

Answer 1

Since you are making a 2D game I suppose that speed is not really important. Don't make it too hard on yourself and use objectstreams.
first thing you need is a class which holds all the variables you want to send (like position, health, whatever) and let it implement the "Serializable" interface.
next stop: the client side connection
socket     = new Socket(ipaddress, port);     
obi = new ObjectInputStream(socket.getInputStream());
obu = new ObjectOutputStream(socket.getOutputStream());and the server side connection:
ServerSocket s = new ServerSocket(port);
while(true) { // keep accepting new connections
socket = s.accept();
obu = new ObjectOutputStream(socket.getOutputStream());
obi = new ObjectInputStream(socket.getInputStream());
}make sure you turn around output and input. The server won't continue unless his output has input on the clientside.
with the objectoutputsstream you can send the objects:
obu.writeObject(netData);
obu.flush();
  // make sure you flushreceiving the object:
netData = (YourNetData) oi.readObject();so what you need is a client side function that sends objects, a client side thread that handles received objects.
The easiest way to make a server is making an array of client threads and put the socket and the objectstreams in the thread. The thread can read an incoming object and send it to all clients in the array. This way you never have to change your server, you only have to change the object you send.