General testing

Program.cs

@@ -13,23 +13,23 @@ public class Program
     private static Scenario scenario;
 
     // Speed control
-    //private static double desiredSpeed = 1.0;
     private static double desiredSpeed = 0.0001;
+    //private static double desiredSpeed = 1;
     private static double currentSpeed = desiredSpeed;
     private const double MinSpeed = 0.0001;
     private const double MaxSpeed = 1.0;
     private const double ScrollFactor = 1.1;
 
     // Space‑toggle state
-    private static double lastDesiredSpeed = 0.1;   // remembers the last non‑1.0 scroll speed
-    private static bool isRealTime = true;          // true when desiredSpeed == 1.0
+    private static double lastDesiredSpeed = 0.1;   // remembers the last non‑1.0 speed
+    private static bool isRealTime = false;         // starts in slow‑mo (desiredSpeed != 1.0)
 
     private static volatile bool running = true;
 
     public static void Main()
     {
         var mode = new VideoMode(new Vector2u(1280, 720));
-        var window = new RenderWindow(mode, "Pipe Resonator");
+        var window = new RenderWindow(mode, "FluidSim - Helmholtz Resonator");
         window.SetVerticalSyncEnabled(true);
         window.Closed += (_, _) => { running = false; window.Close(); };
         window.MouseWheelScrolled += OnMouseWheel;
@@ -39,9 +39,11 @@ public class Program
         soundEngine.Volume = 70;
         soundEngine.Start();
 
-        //scenario = new PipeResonatorScenario();
+        // Choose one scenario. The Helmholtz resonator is fully updated.
         //scenario = new HelmholtzResonatorScenario();
-        scenario = new SodShockTubeScenario();
+        //scenario = new PipeResonatorScenario();   // needs update to new API
+        //scenario = new SodShockTubeScenario();    // needs update to new API
+        scenario = new EngineScenario();          // also works (provided earlier)
 
         scenario.Initialize(SampleRate);
 
@@ -51,9 +53,10 @@ public class Program
         double lastSpeedUpdateTime = stopwatch.Elapsed.TotalSeconds;
 
         // Resampling buffer
-        List<float> simBuffer = new List<float>(4096);
+        var simBuffer = new List<float>(4096);
         double readIndex = 0.0;
 
+        // Prime the buffer with a few samples
         for (int i = 0; i < 4; i++)
             simBuffer.Add(scenario.Process());
 
@@ -73,7 +76,6 @@ public class Program
             lastSpeedUpdateTime = currentRealTime;
 
             // Smoothly transition currentSpeed → desiredSpeed
-            // When toggling, desiredSpeed jumps, but currentSpeed follows with a smooth lerp
             double smoothingRate = 8.0;   // higher = faster catch‑up
             currentSpeed += (desiredSpeed - currentSpeed) * (1.0 - Math.Exp(-smoothingRate * dtSpeed));
 
@@ -122,7 +124,7 @@ public class Program
                     break;
             }
 
-            // ---------- Drawing & title ----------
+            // ---------- Drawing & window title ----------
             if (currentRealTime - lastDrawTime >= drawInterval)
             {
                 double actualSpeed = totalOutputSamples / (currentRealTime * SampleRate);
@@ -156,7 +158,7 @@ public class Program
 
         desiredSpeed = Math.Clamp(desiredSpeed, MinSpeed, MaxSpeed);
 
-        // Update the remembered slow-mo speed (unless we are exactly at 1.0)
+        // Update the remembered slow‑mo speed (unless we are exactly at 1.0)
         if (!wasRealTime || Math.Abs(desiredSpeed - 1.0) > 1e-6)
             lastDesiredSpeed = desiredSpeed;