Let's talk about broadcasting (programmer's thread)

Let me say i don't love C# (i used it only once years ago to create the Assetto Corsa Career Generator) but on reading the code looks like pretty clean and easy to understand, maybe i will try to wrap it into a plugin for UE4, would be nice and more easy use Slate/UMG for the client interface.

I only need to figure out how to use a C# DLL with C++, maybe i only need to make it "managed" and load it with the plugin, wrap some code and expose it to UMG

 

cool stuff. I'm not sure if I understand the whole system correctly though. is it a wrapper to connect to the server itself and get data such as drivers, lap times etc or to connect to a client of a server that's spectating to set its camera views and stuff like that?

 

and if it's the client, how does the client join as a spectator instead of a driver? because I just tried the test program and it changes the view as me as a driver, which means I can't drive anymore lol

 

alright, so this SDK is for remotely controlling what a broadcaster/spectator of a race sees. next question is how to connect/start a race as a spectator, so that I don't have to be a driver sitting at the side of the track and then connect the broadcasting program to start spectating

 

I created some wrapper on javascript to connect to ACC broadcast api, in case somebody wants to improve it, feel free to fork it: https://github.com/angel-git/acc-broadcast-node/ For the moment you can see on browser your current speed, gear and delta time from your previous lap (at least in practice mode, didn't try the rest). Should be quite easy to extend and have the same functionality as the C# client.

Angel

 

Ok, looks like load a C# dll in UE4 and use it cause more problems and instability than I thought, load the library is pretty easy but methods calls are instable as hell, now i start thinking that could be better rewrite the entire dll in C++, i don't really want to do it because rewrite something it's always prone to errors.

We will see tomorrow morning how i will wake up

 

nice, I am going to be working on my own typescript client sokn

 

Because for me is more easy and fast use Slate/UMG for graphics interface.

 

could this be a mistake:

Code:

public void RequestInstantReplay(float startSessionTime, float durationMS, int initialFocusedCarIndex = -1, string initialCameraSet = "", string initialCamera = "")
{
    using (var ms = new MemoryStream())
    using (var bw = new BinaryWriter(ms))
    {
        bw.Write((byte)OutboundMessageTypes.INSTANT_REPLAY_REQUEST); // First byte is always the command type
        bw.Write((int)ConnectionId);

        bw.Write((float)startSessionTime);
        bw.Write((float)durationMS);
        bw.Write((int)initialFocusedCarIndex);

        WriteString(bw, initialCameraSet);
        WriteString(bw, initialCamera);

        Send(ms.ToArray());
    }
}

you wrote

Code:

bw.Write((int)initialFocusedCarIndex);

(BroadcastingNetworkProtocol.cs#472) which writes a 32 bit signed integer to the stream (according to https://referencesource.microsoft.com/#mscorlib/system/io/binarywriter.cs,276)
but on BroadcastingNetworkProtocol.cs#155 you wrote

Code:

var driverIndex = br.ReadUInt16();

which indicates that initialFocusedCarIndex should be written to the stream as

Code:

bw.Write((short)initialFocusedCarIndex);

I could be wrong, I just started learning about buffers and such for this project

 

ah right, I missed that. thank you

 

ok, this is my attempt: https://github.com/samjmckenzie/acc-ts-broadcaster
apologies for any mistakes made, this is my first time truly working with udp sockets and binary data. trying to port certain things over from c# is quite confusing as well at times due to the way functions are named in node core library vs .net core and the fact that javascript only has one data type for numbers, i.e. number
planning on adding a websocket implementation when I have time that works nicely with this. I chose typescript because when I do add the websocket implementation, a lot of the client code can be shared with the server which is very useful

 

i want to use java code.

Code:

InetAddress host = InetAddress.getByName("127.0.0.1");
        ByteArrayOutputStream os = new ByteArrayOutputStream();
        os.write((byte)1);
        os.write((byte)2);
        writeByte(os,"name");
        writeByte(os,"12345");
        os.write(100);
        writeByte(os,"12345");
        byte[] bytes = os.toByteArray();
        DatagramPacket request = new DatagramPacket(bytes, bytes.length, host, 9000);
        socket.send(request);

but when i run code, game crash.
how can i find game debug logs ?

 

"Logs" file generated in your "c:\users\*youruser*\AppData\Local\AC2\Saved\" path. The "AppData" folder is hidden by default, check "Hidden items" in your Windows view properties.

 

thank you