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Hi all. I didn't want to make a post about this but google has proven rather unhelpful.
I am in school for Game Programming and I am working on an XNA based tech demo for a class. I am trying to teach myself UDP socket programming with the goal of eventually making multiplayer game. Right now my grasp on socket programming is rudimentary at best though through example I have written a simple chat server/client. I would love to be able to use Lidgren for this but as it is a tech demo I need to write all the code myself, which I am fine with.
The end goal of my project is to have two sprites moving around the screen, one separate clients controlled by a server. Right now, I just want my server to tell me which key I am sending it. As of now, all I get is:
Received a broadcast from 192.168.x.xxx:59145
Message: NONE
On any key press, which at least means it is getting to my server.
KeyboardState keyboardState = new KeyboardState();
if (Keyboard.GetState().GetPressedKeys().Length > 0)
{
// Default movement is none
if (!keyboardState.IsKeyDown(Keys.W) || !keyboardState.IsKeyDown(Keys.A) || !keyboardState.IsKeyDown(Keys.S) || !keyboardState.IsKeyDown(Keys.D))
{
MoveDir = MoveDirection.NONE;
}
if (keyboardState.IsKeyDown(Keys.W))
{
MoveDir = MoveDirection.UP;
}
if (keyboardState.IsKeyDown(Keys.A))
{
MoveDir = MoveDirection.LEFT;
}
if (keyboardState.IsKeyDown(Keys.S))
{
MoveDir = MoveDirection.DOWN;
}
if (keyboardState.IsKeyDown(Keys.D))
{
MoveDir = MoveDirection.RIGHT;
}
byte[] send_buffer = Encoding.ASCII.GetBytes(MoveDir.ToString());
try
{
sending_socket.SendTo(send_buffer, sending_end_point);
}
catch (Exception send_exception)
{
exception_thrown = true;
Console.WriteLine(" Exception {0}", send_exception.Message);
}
if (exception_thrown == false)
{
Console.WriteLine("Message has been sent to the broadcast address");
}
else
{
exception_thrown = false;
Console.WriteLine("The exception indicates the message was not sent.");
}
}
That is the chunk of relevant code inside my XNA update function. MoveDir is declared at the start of my file as an instance of Movedirection.
// Move direction enumerator
enum MoveDirection
{
UP,
DOWN,
LEFT,
RIGHT,
NONE
}
is my enumI don't think it matters but my server code is:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Net.Sockets;
using System.Threading;
namespace Server
{
public class UDPListener
{
private const int listenPort = 11000;
static int Main(string[] args)
{
bool done = false;
UdpClient listener = new UdpClient(listenPort);
IPEndPoint groupEP = new IPEndPoint(IPAddress.Any, listenPort);
string recieved_userName;
string received_data;
byte[] receive_name_array;
byte[] receive_byte_array;
receive_name_array = listener.Receive(ref groupEP);
try
{
while (!done)
{
receive_byte_array = listener.Receive(ref groupEP);
Console.WriteLine("Received a broadcast from {0}", groupEP.ToString());
received_data = Encoding.ASCII.GetString(receive_byte_array, 0, receive_byte_array.Length);
Console.Write("Message: {0}\n", received_data);
}
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
listener.Close();
return 0;
}
}
}
Anyways, like I said I am new to this and trying to figure it all out. My level of experience is a college level data structures course. XNA does not support "true keyboard input" (http://dream-forever.net/Blog/2011/08/29/getting-true-keyboard-input-into-your-xna-games/) and I know there HAS to be a simpler way to get this done besides what is suggested in that post. I don't need it to be pretty, just to work.
If this is a dumb question, I apologize for wasting peoples time. Thanks for any help.
Edit: I was unsure if I should post this here or in the networking section, since it has XNA specific stuff I chose here, please move if it is out of place.
Edited by Mr C, 14 March 2013 - 07:00 PM.
Thanks again.
