fix: clean gitignore for Godot C#

Scripts/Components/EngineControlUnit.cs

@@ -0,0 +1,48 @@
+using System;
+
+public class EngineControlUnit
+{
+    public double Throttle;
+    public bool IsInNeutral = true;
+
+    private const double _revLimit = 7000;
+    private const double _idleRpm = 800;
+    private const double _idleSensitivity = 1e-2;
+    private const double _throttleSensitivity = 20;
+    private const double _neutralThrottleLimit = 0.2;
+    
+    private double _idlePosition = 0;
+    private double _targetThrottle = 0;
+    private double _currentThrottle = 0;
+
+    public EngineControlUnit()
+    {
+
+    }
+
+    public void Update(double dt, Engine engine)
+    {
+        if (engine.RPM > _revLimit)
+        {
+            engine.ThrottlePosition = 0; return;
+        }
+
+        _targetThrottle = Math.Clamp(GetIdleThrottle(dt, engine.RPM) + Throttle, 0, 1);
+        _currentThrottle = Util.Lerp(_currentThrottle, _targetThrottle, dt * _throttleSensitivity);
+
+        if (IsInNeutral) _currentThrottle = Math.Min(_currentThrottle, _neutralThrottleLimit);
+
+        engine.ThrottlePosition = _currentThrottle;
+    }
+
+    public double GetIdleThrottle(double dt, double rpm)
+    {
+        if (rpm > _idleRpm) return 0;
+
+        double diff = rpm - _idleRpm;
+
+        _idlePosition = Math.Clamp(_idlePosition - (diff * _idleSensitivity * dt), 0, 1.0);
+
+        return _idlePosition;
+    }
+}