Create Timer in C# which calls function in LUA

NeoLua Version: 1.3.0

I’m trying to add a timer to LUA which calls a function in the LUA script. So far everything works except that I dont know how to call the LUA function in my c# timer class.

The following example raises an exception on OnTimer?.Invoke(this) saying “‘Nil’ cannot be called” OnTimer value on runtime is {Method = {Neo.IronLua.LuaResult Tick(System.Runtime.CompilerServices.Closure, System.Object)}}

Example to reproduce:

    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            using (var lua = new Neo.IronLua.Lua())
            {
                dynamic dg = lua.CreateEnvironment();
                dg.createTimer = new Func<CustomTimer>(Awesome.createTimer);

                dg.dochunk(@"local timer = nil
local ticks = 0
local function Tick(timer)
	ticks = ticks + 1
	printf(ticks)
end
timer = createTimer()
timer.Interval = 100
timer.OnTimer = Tick
timer.Enabled = true");
            }
        }
    }

    public class CustomTimer
    {
        public CustomTimer()
        {
            timer.Elapsed += Timer_Elapsed;
        }

        private void Timer_Elapsed(object sender, ElapsedEventArgs e)
        {
            //how to raise OnTimer?
            OnTimer?.Invoke(this);
        }

        private Timer timer = new Timer();
        public double Interval
        {
            get => timer.Interval;
            set => timer.Interval = value;
        }
        public Func<object, object> OnTimer;
        public bool Enabled
        {
            get => timer.Enabled;
            set => timer.Enabled = value;
        }
    }

    public static class Awesome
    {
        public static CustomTimer createTimer()
        {
            return new CustomTimer();
        }
    }

[neolithos]

You declared the timer variable local, so the scope is only the first script. You need to set it to a global variable.

timer = createTimer()

and run on the same environment dg.

timer.Enabled = false;

[Symbai]

Thanks again for your help!