feat: backporting existing raylib-cs examples and new official raylib examples to WASM, adopting raylib's original code style

Examples/Audio/SoundMulti.cs

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+/*******************************************************************************************
+*
+*   raylib [audio] example - sound multi
+*
+*   Example complexity rating: [★★☆☆] 2/4
+*
+*   Example originally created with raylib 5.0, last time updated with raylib 5.0
+*
+*   Example contributed by Jeffery Myers (@JeffM2501) and reviewed by Ramon Santamaria (@raysan5)
+*
+*   Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
+*   BSD-like license that allows static linking with closed source software
+*
+*   Copyright (c) 2023-2025 Jeffery Myers (@JeffM2501)
+*
+********************************************************************************************/
+
+using static Raylib_cs.Raylib;
+
+namespace Examples.Audio;
+
+public partial class SoundMulti : IExample
+{
+    private const int screenWidth = 800;
+    private const int screenHeight = 450;
+
+    private const int MAX_SOUNDS = 10;
+
+    public string Name => "Audio / Sound Multi";
+
+    public string Title => "raylib [audio] example - sound multi";
+
+    private Sound[] soundArray = new Sound[MAX_SOUNDS];
+    private int currentSound;
+
+    public void Init()
+    {
+        InitAudioDevice();      // Initialize audio device
+
+        // Load audio file into the first slot as the 'source' sound,
+        // this sound owns the sample data
+        soundArray[0] = LoadSound("resources/audio/sound.wav");
+
+        // Load an alias of the sound into slots 1-9. These do not own the sound data, but can be played
+        for (int i = 1; i < MAX_SOUNDS; i++) soundArray[i] = LoadSoundAlias(soundArray[0]);
+
+        currentSound = 0;               // Set the sound list to the start
+    }
+
+    public void Update()
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        if (IsKeyPressed(KeyboardKey.Space))
+        {
+            PlaySound(soundArray[currentSound]);    // Play the next open sound slot
+            currentSound++;                         // Increment the sound slot
+
+            // If the sound slot is out of bounds, go back to 0
+            if (currentSound >= MAX_SOUNDS) currentSound = 0;
+
+            // NOTE: Another approach would be to look at the list for the first sound
+            // that is not playing and use that slot
+        }
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+        ClearBackground(Color.RayWhite);
+
+        DrawText("Press SPACE to PLAY a WAV sound!", 200, 180, 20, Color.LightGray);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    public void Unload()
+    {
+        for (int i = 1; i < MAX_SOUNDS; i++) UnloadSoundAlias(soundArray[i]); // Unload sound aliases
+        UnloadSound(soundArray[0]); // Unload source sound data
+
+        CloseAudioDevice();     // Close audio device
+    }
+
+    public static int Main()
+    {
+        // Initialization
+        //--------------------------------------------------------------------------------------
+        InitWindow(screenWidth, screenHeight, "raylib [audio] example - sound multi");
+
+        SetTargetFPS(60);               // Set our game to run at 60 frames-per-second
+        //--------------------------------------------------------------------------------------
+
+        var game = new SoundMulti();
+        game.Init();
+
+        // Main game loop
+        while (!WindowShouldClose())    // Detect window close button or ESC key
+        {
+            game.Update();
+        }
+
+        game.Unload();
+
+        // De-Initialization
+        //--------------------------------------------------------------------------------------
+        CloseWindow();          // Close window and OpenGL context
+        //--------------------------------------------------------------------------------------
+
+        return 0;
+    }
+}