first commit

Code/Utils/EngineStream/StreamParameters.cs

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+using Sandbox;
+
+namespace VeloX;
+
+public sealed class StreamParameters
+{
+	[Property, Range( 0.1f, 2.0f ), Description( "Base pitch multiplier" )]
+	public float Pitch { get; set; } = 1.0f;
+
+	[Property, Range( 0.0f, 2.0f ), Description( "Base volume level" )]
+	public float Volume { get; set; } = 1.0f;
+
+	[Property, Range( 1f, 100f ), Description( "Vibration frequency at max RPM" )]
+	public float RedlineFrequency { get; set; } = 55.0f;
+
+	[Property, Range( 0.0f, 1.0f ), Description( "Vibration intensity at max RPM" )]
+	public float RedlineStrength { get; set; } = 0.2f;
+
+	[Property, Range( 1f, 50f ), Description( "Idle vibration frequency" )]
+	public float WobbleFrequency { get; set; } = 25.0f;
+
+	[Property, Range( 0.0f, 0.5f ), Description( "Idle vibration intensity" )]
+	public float WobbleStrength { get; set; } = 0.13f;
+}