Networking Help

[Supereor]

Hey all am working on a more than 1 client game and i got 2 clients able to move their own player on the server now I'm trying to get it where on the clients screen you can see the other players. I got a start to it but I'm getting a variable error ill address later in this post

This is in the receive packets script in the case that handles the player movement, I'm moving them on the server then sending their X and Y to the other players.

case 2: //Movement
        var playerident = buffer_read(buffer, buffer_u32);
        var xx = buffer_read(buffer, buffer_u32);
        var yy = buffer_read(buffer, buffer_u32);
        with(obj_block)
        {
            if(playerid == playerident)
            {
                x = xx //X
                y = yy //Y
            }
        }
            with(obj_block)
            {
                if(sock != socket)
                {
                    buffer_seek(global.buffer, buffer_seek_start, 0);
                    buffer_write(global.buffer, buffer_u8, 2);
                    buffer_write(global.buffer, buffer_u32, playerident); //His G.P
                    buffer_write(global.buffer, buffer_u32, xx); //His X
                    buffer_write(global.buffer, buffer_u32, yy); //His Y
                    network_send_packet(sock, global.buffer, buffer_tell(global.buffer));
                }
            }
            
    break;

Then on the Client side this what happens when they get this packet

case 2: //Getting someone elses movement
        gip = buffer_read(buffer, buffer_u32);
        if(instance_exists(obj_remoteplayer))
        {
            with(obj_remoteplayer)
            {
                if(globplayerid == gip)
                {
                    x = buffer_read(buffer, buffer_u32);
                    y = buffer_read(buffer, buffer_u32);
                }
            }
        }else
        {
            instance_create(30,30,obj_remoteplayer);
            with(obj_remoteplayer)
            {
                globplayerid = gip;
                x = buffer_read(buffer, buffer_u32);
                y = buffer_read(buffer, buffer_u32);
            }
        }

Yes i know this code only works with 2 players and I'm just trying to figure that out first then move on to having more than 2. When i run the client and try to move it says the variable globplayerid isn't set before reading it, but in the remoteplayer create i put it there. So i don't know why I'm getting this error

Variable obj_remoteplayer.gip(100002, -2147483648) not set before reading it.
at gml_Script_scr_received_packet (line 29) - globplayerid = gip;
############################################################################################
--------------------------------------------------------------------------------------------
stack frame is
gml_Script_scr_received_packet (line 29)
called from - gml_Object_obj_client_NetworkingEvent_1 (line 9) - scr_received_packet(buffer);

Can anyone help me?

 

[IndianaBones]

The error message is pointing to the "gip" variable not being defined.

You need to put other.gip because you are trying to reference it inside a with{} statement and you have defined gip outside the with{} statement