first commit

Code/Utils/EngineStream/EngineStream.cs

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+using Sandbox;
+using System.Collections.Generic;
+using VeloX.Audio;
+
+namespace VeloX;
+
+[GameResource( "Engine Stream", "engstr", "Engine Sound", Category = "VeloX", Icon = "time_to_leave" )]
+public sealed class EngineStream : GameResource
+{
+	public sealed class Layer
+	{
+		[Property,
+		 Title( "Sound File" ),
+		 Description( "Sound asset for this layer" )]
+		public SoundFile AudioPath { get; set; }
+
+		[Property, Title( "Use Redline Effect" ),
+		 Description( "Enable RPM-based vibration effect" )]
+		public bool UseRedline { get; set; } = true;
+
+		[Property, Title( "Controllers" ),
+		 Description( "Audio parameter controllers" )]
+		public List<Controller> Controllers { get; set; }
+		[Property, Title( "Is Muted" )]
+		public bool IsMuted { get; set; }
+	}
+
+	[Property, Title( "Stream Parameters" ),
+	 Description( "Global engine sound parameters" )]
+	public StreamParameters Parameters { get; set; }
+
+	[Property, Title( "Sound Layers" ),
+	 Description( "Individual sound layers" )]
+	public Dictionary<string, Layer> Layers { get; set; }
+}