Ajouts de musique et irrKlang.

SQCSim2021/external/irrKlang-1.6.0/examples.net/CSharp.01.HelloWorld/Class1.cs

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+using System;
+using IrrKlang;
+
+namespace CSharp._01.HelloWorld
+{
+	class Class1
+	{
+		[STAThread]
+		static void Main(string[] args)
+		{
+			// start the sound engine with default parameters
+			ISoundEngine engine = new ISoundEngine();
+
+			// To play a sound, we only to call play2D(). The second parameter
+			// tells the engine to play it looped.
+
+			engine.Play2D("../../media/getout.ogg", true);
+
+			Console.Out.WriteLine("\nHello World");
+
+			do
+			{
+				Console.Out.WriteLine("Press any key to play some sound, press 'q' to quit.");
+
+				// play a single sound
+				engine.Play2D("../../media/bell.wav");
+			}
+			while(_getch() != 'q');
+		}
+		
+		// some simple function for reading keys from the console
+		[System.Runtime.InteropServices.DllImport("msvcrt")]
+		static extern int _getch();
+	}
+}