Timer with Line Trace

[germj]

Is there a way to create a Timer that would pulse every 0.1 seconds, and have a line trace attached to an actor with a debug draw.

I’ve read through the documentation, and don’t see these pieces exposed as of yet.

[nxrighthere]

A built-in timer implementation is not provided yet, but it's easy to implement a custom one using frame ticking. For line tracing see this functionality and just pass the position of an actor to it. To debug line tracing use Debug.DrawLine(). Also, see this test.

[germj]

Hi, I got everything working except the frame tick.

Would you be able to provide a sample. I’ll post the code that I used. Really appreciate the help.

[nxrighthere]

You can implement a timer in several ways:

1. Using World.Time to get time difference between frames and invoke functions in any preferable approach (for example, you can use callback references stored in a collection with timestamps)
2. Set a time variable in milliseconds for a particular callback and subtract World.DeltaTime every frame from it, till the time reaches <= 0.0 milliseconds

Take a look at how timers usually implemented in Unity, you will find several helpful approaches.

[germj]

What would the impact be of using C# timers?
https://stackoverflow.com/questions/12535722/what-is-the-best-way-to-implement-a-timer

[nxrighthere]

As far as I know, it's based on multi-threading while you have to dispatch callbacks on the main thread.

[germj]

Hi, I got it to work. Is it possible to have multiple classes running.

Instead of using a switch, I'd like these to run at the same time.
runningSystem = testSystem switch{
TestSystems.Brain_ML => new AStar(),
TestSystems.Grid_ML => new Grid(),
_ => throw new Exception("Unknown system")
};

---

C# Timer Class running in CLR

    private static System.Timers.Timer aTimer;
    private static float timer;

    private static void SetTimer()
    {
        // Create a timer with a two second interval.
        aTimer = new System.Timers.Timer(1000);
        // Hook up the Elapsed event for the timer. 
        aTimer.Elapsed += OnTimedEvent;
        aTimer.AutoReset = true;
        aTimer.Enabled = true;
    }

Make sure you end the timer prior to closing out.

    public void OnEndPlay()
    {

        aTimer.Stop();
        aTimer.Dispose();
        Debug.ClearOnScreenMessages();
    }

[nxrighthere]

You are free to organize systems execution in any way you like, be it delegates, interfaces, or functions. Just use world events as the execution root.

Are you sure that your timer is not violating thread-safety and events dispatched on the main thread? Because if not, then it will cause state/memory corruption, crashes, and other bad things.