game tick service

TanksServer/GameTickService.cs

@@ -0,0 +1,38 @@
+using System.Threading;
+using Microsoft.Extensions.Hosting;
+
+namespace TanksServer;
+
+public class GameTickService(IEnumerable<ITickStep> steps) : IHostedService
+{
+    private readonly CancellationTokenSource _cancellation = new();
+    private readonly List<ITickStep> _steps = steps.ToList();
+    private Task? _run;
+
+    public Task StartAsync(CancellationToken cancellationToken)
+    {
+        _run = RunAsync();
+        return Task.CompletedTask;
+    }
+
+    private async Task RunAsync()
+    {
+        while (!_cancellation.IsCancellationRequested)
+        {
+            foreach (var step in _steps)
+                await step.TickAsync();
+            await Task.Delay(1000 / 250);
+        }
+    }
+
+    public async Task StopAsync(CancellationToken cancellationToken)
+    {
+        await _cancellation.CancelAsync();
+        if (_run != null) await _run;
+    }
+}
+
+public interface ITickStep
+{
+    Task TickAsync();
+}