CODEWITHSUNDEEP
c#unity-game-enginenetwork-programmingevent-handling
Brent Allard
Brent Allard

Reputation: 396

Elegant way to raise events in Update() that are received over the network

I'm writing a Unity3D game which gets networking events from an external source. The actual network read operations are in their own thread.

When I read some item from the network, I want a Monobehaviour to call some function using that item as an argument in the next Update() call. Here's how I make that happen right now (just pseudocode for simplicity)

The Network Thread

OtherScript script;
while true {
    Thing thing = Network.read()
    script.queue.put(thing);
}

The Monobehaviour (OtherScript)

SynchronizedQueue<Thing> queue;
void Update() {
    while !queue.isEmpty() {
        useThing(queue.pop())
    }
}

This definitely works, but my problem is that I'm subscribing to 20+ different types of things, each of which has its own queue and its own "callback" function, resulting in a lot of boilerplate.

Is there some sort of built in mechanism which automates this functionality?

Upvotes: 1

Views: 39

Answers (1)

Everts
Everts

Reputation: 10701

Your solution seems to be in your question. You could use an event instead.

The Network Thread

public static event EventHandler<NetworkArg>RaiseNetwork;
protected void OnNetwork(NetworkArg arg)
{
     if(RaiseNetwork != null) { RaiseNetwork(this, arg); }
}
while true {
    Thing thing = Network.read()
    RaiseNetwork(new NetworkArg(thing));
}

NetworkArg class

public class NetworkArg : System.EventArgs
{
    public Thing thing { get; private set;}
    public NetworkArg(Thing thing){ this.thing = thing; }
}

The Monobehaviour (OtherScript)

void Start()
{
    NetworkThread.RaiseNetwork += UseThing;
}
private void UseThing (object sender, NetworkArg arg){ }

Upvotes: 1

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